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ABCC3 - 版本历史
2026-04-18T15:18:38Z
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2025年12月31日 (三) 20:44 77921020
2025-12-31T20:44:06Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">←上一版本</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">2025年12月31日 (三) 20:44的版本</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l3" >第3行：</td>
<td colspan="2" class="diff-lineno">第3行：</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <div style="margin-bottom: 30px; border-bottom: 1.2px solid #e2e8f0; padding-bottom: 25px;"></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <div style="margin-bottom: 30px; border-bottom: 1.2px solid #e2e8f0; padding-bottom: 25px;"></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <p style="font-size: 1.1em; margin: 10px 0; color: #334155; text-align: justify;"></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <p style="font-size: 1.1em; margin: 10px 0; color: #334155; text-align: justify;"></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <strong>ABCC3</strong>，更常被称为 <strong>MRP3</strong>（Multidrug Resistance-associated Protein 3），是 <del class="diffchange diffchange-inline">ATP 结合盒 </del>(ABC) <del class="diffchange diffchange-inline">转运蛋白家族的一员。在肝脏解毒和胆汁代谢网络中，ABCC3 </del>扮演着独特的<strong>“代偿性救援者”</strong>角色。与其位于毛细胆管膜（Apical）负责将毒素排入胆汁的“兄弟” [[ABCC2]] (MRP2) 不同，ABCC3 <del class="diffchange diffchange-inline">特异性定位于肝细胞的</del><strong>侧基底膜</strong> (Basolateral Membrane)。这意味着它将底物（主要是<strong>[[葡萄糖醛酸]]</strong><del class="diffchange diffchange-inline">结合物和胆盐）从肝细胞泵回</del><strong><del class="diffchange diffchange-inline">血液</del></strong><del class="diffchange diffchange-inline">循环。在正常生理下其表达量较低，但在</del><strong>[[胆汁淤积]]</strong>或 ABCC2 功能缺失（如 Dubin-<del class="diffchange diffchange-inline">Johnson 综合征）时，ABCC3 会被显著上调，将积聚的毒性胆汁酸排出至血液以便经肾脏清除，从而保护肝脏免受损伤。同时，这种“泵回血液”的机制也导致了肿瘤细胞对</del>[[甲氨蝶呤]]等化疗药物的耐药。</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <strong>ABCC3</strong>，更常被称为 <strong>MRP3</strong>（Multidrug Resistance-associated Protein 3），是 <ins class="diffchange diffchange-inline"><strong>[[ATP结合盒]]</strong> </ins>(ABC) <ins class="diffchange diffchange-inline">转运蛋白家族的一员。在 <strong>[[肝脏]]</strong> 解毒和 <strong>[[胆汁]]</strong> 代谢网络中，ABCC3 </ins>扮演着独特的<strong>“代偿性救援者”</strong>角色。与其位于毛细胆管膜（Apical）负责将毒素排入胆汁的“兄弟” <ins class="diffchange diffchange-inline"><strong></ins>[[ABCC2]]<ins class="diffchange diffchange-inline"></strong> </ins>(MRP2) 不同，ABCC3 <ins class="diffchange diffchange-inline">特异性定位于 <strong>[[肝细胞]]</strong> 的</ins><strong>侧基底膜</strong> (Basolateral Membrane)。这意味着它将底物（主要是<strong>[[葡萄糖醛酸]]</strong><ins class="diffchange diffchange-inline">结合物和 <strong>[[胆盐]]</strong>）从肝细胞泵回</ins><strong><ins class="diffchange diffchange-inline">[[血液循环]]</ins></strong><ins class="diffchange diffchange-inline">。在正常生理下其表达量较低，但在</ins><strong>[[胆汁淤积]]</strong>或 ABCC2 功能缺失（如 <ins class="diffchange diffchange-inline"><strong>[[</ins>Dubin-<ins class="diffchange diffchange-inline">Johnson综合征]]</strong>）时，ABCC3 会被显著上调，将积聚的毒性 <strong>[[胆汁酸]]</strong> 排出至血液以便经 <strong>[[肾脏]]</strong> 清除，从而保护肝脏免受损伤。同时，这种“泵回血液”的机制也导致了肿瘤细胞对 <strong></ins>[[甲氨蝶呤]]<ins class="diffchange diffchange-inline"></strong> </ins>等化疗药物的耐药。</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </p></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </p></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </div></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </div></div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l57" >第57行：</td>
<td colspan="2" class="diff-lineno">第57行：</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">亚细胞定位</th></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">亚细胞定位</th></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">侧基底膜 (Basolateral)</td></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;"><ins class="diffchange diffchange-inline">[[</ins>侧基底膜<ins class="diffchange diffchange-inline">]] </ins>(Basolateral)</td></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l65" >第65行：</td>
<td colspan="2" class="diff-lineno">第65行：</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569;">功能分类</th></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569;">功能分类</th></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 6px 12px; color: #0f172a;">外排泵 (Efflux Pump)</td></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 6px 12px; color: #0f172a;"><ins class="diffchange diffchange-inline">[[</ins>外排泵<ins class="diffchange diffchange-inline">]] </ins>(Efflux Pump)</td></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </table></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </table></div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l79" >第79行：</td>
<td colspan="2" class="diff-lineno">第79行：</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <ul style="padding-left: 25px; color: #334155;"></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <ul style="padding-left: 25px; color: #334155;"></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong>侧基底膜转运 (Basolateral Efflux)：</strong></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong>侧基底膜转运 (Basolateral Efflux)：</strong></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <br><del class="diffchange diffchange-inline">肝细胞具有极性：面向胆管的是毛细胆管膜（Apical），面向血液的是侧基底膜（Basolateral）。大多数外排泵（如 </del>MRP2, MDR1, <del class="diffchange diffchange-inline">BSEP）位于 </del>Apical 面，将物质排入胆汁。而 <strong>ABCC3/MRP3</strong> 位于 Basolateral 面，消耗 ATP 将底物泵入肝窦血液循环。</li></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <br><ins class="diffchange diffchange-inline">肝细胞具有极性：面向胆管的是 <strong>[[毛细胆管]]</strong> 膜（Apical），面向血液的是 <strong>[[侧基底膜]]</strong>（Basolateral）。大多数外排泵（如 [[</ins>MRP2<ins class="diffchange diffchange-inline">]]</ins>, <ins class="diffchange diffchange-inline">[[</ins>MDR1<ins class="diffchange diffchange-inline">]]</ins>, <ins class="diffchange diffchange-inline">[[BSEP]]）位于 </ins>Apical 面，将物质排入胆汁。而 <strong>ABCC3/MRP3</strong> 位于 Basolateral 面，消耗 <ins class="diffchange diffchange-inline"><strong>[[</ins>ATP<ins class="diffchange diffchange-inline">]]</strong> </ins>将底物泵入肝窦血液循环。</li></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong>底物特异性：</strong></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong>底物特异性：</strong></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <br>ABCC3 <del class="diffchange diffchange-inline">对有机阴离子具有广泛亲和力，特别是</del><strong>[[葡萄糖醛酸]]</strong><del class="diffchange diffchange-inline">结合物（如胆红素</del>-<del class="diffchange diffchange-inline">葡萄糖醛酸苷、吗啡</del>-6-葡萄糖醛酸苷）和单价胆盐。</li></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <br>ABCC3 <ins class="diffchange diffchange-inline">对 <strong>[[有机阴离子]]</strong> 具有广泛亲和力，特别是</ins><strong>[[葡萄糖醛酸]]</strong><ins class="diffchange diffchange-inline">结合物（如 <strong>[[胆红素]]</strong></ins>-<ins class="diffchange diffchange-inline">葡萄糖醛酸苷、<strong>[[吗啡]]</strong></ins>-6-葡萄糖醛酸苷）和单价胆盐。</li></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong>诱导表达与代偿：</strong></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong>诱导表达与代偿：</strong></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <br>ABCC3 <del class="diffchange diffchange-inline">的表达受核受体（如 </del>[[FXR]], [[PXR]]<del class="diffchange diffchange-inline">）调控。在胆汁淤积状态下，胆汁酸激活这些受体，大幅上调 </del>ABCC3 的表达。这形成了一种保护机制：当胆汁排泄受阻（路不通）时，ABCC3 <del class="diffchange diffchange-inline">打开“后门”，将有毒胆汁酸泵回血液，通过肾脏排出（导致尿液变色），从而减轻肝细胞内的毒性积聚。</del></li></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <br>ABCC3 <ins class="diffchange diffchange-inline">的表达受 <strong>[[核受体]]</strong>（如 <strong></ins>[[FXR]]<ins class="diffchange diffchange-inline"></strong></ins>, <ins class="diffchange diffchange-inline"><strong></ins>[[PXR]]<ins class="diffchange diffchange-inline"></strong>）调控。在 <strong>[[胆汁淤积]]</strong> 状态下，胆汁酸激活这些受体，大幅上调 </ins>ABCC3 的表达。这形成了一种保护机制：当胆汁排泄受阻（路不通）时，ABCC3 <ins class="diffchange diffchange-inline">打开“后门”，将有毒 <strong>[[胆汁酸]]</strong> 泵回血液，通过肾脏排出（导致尿液变色），从而减轻肝细胞内的毒性积聚。</ins></li></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </ul></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </ul></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l100" >第100行：</td>
<td colspan="2" class="diff-lineno">第100行：</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">[[Dubin-Johnson综合征]]</td></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">[[Dubin-Johnson综合征]]</td></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">ABCC2 缺失 -> <strong>ABCC3 上调</strong></td></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">ABCC2 缺失 -> <strong>ABCC3 上调</strong></td></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">该病原因为 ABCC2 (MRP2) <del class="diffchange diffchange-inline">突变导致结合胆红素无法排入胆汁。患者肝脏中 </del>ABCC3 显著上调，将结合胆红素泵回血液，导致特征性的<strong>结合性高胆红素血症</strong>和尿胆红素阳性，但肝损伤通常较轻。</td></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">该病原因为 <ins class="diffchange diffchange-inline"><strong>[[</ins>ABCC2<ins class="diffchange diffchange-inline">]]</strong> </ins>(MRP2) <ins class="diffchange diffchange-inline">突变导致 <strong>[[结合胆红素]]</strong> 无法排入胆汁。患者肝脏中 </ins>ABCC3 显著上调，将结合胆红素泵回血液，导致特征性的<strong><ins class="diffchange diffchange-inline">[[</ins>结合性高胆红素血症<ins class="diffchange diffchange-inline">]]</ins></strong>和尿胆红素阳性，但肝损伤通常较轻。</td></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">[[肝细胞癌]] / [[胰腺癌]]</td></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">[[肝细胞癌]] / [[胰腺癌]]</td></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">过表达 (Overexpression)</td></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">过表达 (Overexpression)</td></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">ABCC3 在多种肿瘤中高表达，将化疗药物（如[[依托泊苷]], [[替尼泊苷]], [[甲氨蝶呤]]）泵出细胞，导致<strong>多药耐药 (MDR)</strong>。高表达通常与不良预后相关。</td></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">ABCC3 在多种肿瘤中高表达，将化疗药物（如 <ins class="diffchange diffchange-inline"><strong></ins>[[依托泊苷]]<ins class="diffchange diffchange-inline"></strong></ins>, <ins class="diffchange diffchange-inline"><strong></ins>[[替尼泊苷]]<ins class="diffchange diffchange-inline"></strong></ins>, <ins class="diffchange diffchange-inline"><strong></ins>[[甲氨蝶呤]]<ins class="diffchange diffchange-inline"></strong></ins>）泵出细胞，导致<strong><ins class="diffchange diffchange-inline">[[</ins>多药耐药<ins class="diffchange diffchange-inline">]] </ins>(MDR)</strong>。高表达通常与不良预后相关。</td></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <tr></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">阻塞性黄疸</td></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;"><ins class="diffchange diffchange-inline">[[</ins>阻塞性黄疸<ins class="diffchange diffchange-inline">]]</ins></td></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">胆汁酸诱导</td></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">胆汁酸诱导</td></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">在胆道梗阻时，ABCC3 <del class="diffchange diffchange-inline">是防止肝坏死的最后防线。它改变了胆盐的排泄途径（从粪便转向尿液）。</del></td></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <td style="padding: 10px; border: 1px solid #cbd5e1;">在胆道梗阻时，ABCC3 <ins class="diffchange diffchange-inline">是防止 <strong>[[肝坏死]]</strong> 的最后防线。它改变了 <strong>[[胆盐]]</strong> 的排泄途径（从粪便转向尿液）。</ins></td></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </tr></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </table></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </table></div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l117" >第117行：</td>
<td colspan="2" class="diff-lineno">第117行：</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <h2 style="background: #f1f5f9; color: #0f172a; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #0f172a; font-weight: bold;">药理学影响</h2></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <h2 style="background: #f1f5f9; color: #0f172a; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #0f172a; font-weight: bold;">药理学影响</h2></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <ul style="padding-left: 25px; color: #334155;"></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <ul style="padding-left: 25px; color: #334155;"></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong><del class="diffchange diffchange-inline">吗啡代谢：</del></strong></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong><ins class="diffchange diffchange-inline">[[吗啡]]代谢：</ins></strong></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <br>吗啡在肝脏代谢为 吗啡-6-葡萄糖醛酸苷 (M6G，活性更强) 和 吗啡-3-葡萄糖醛酸苷。ABCC3 是这些代谢物从肝脏进入血液的主要转运体。ABCC3 <del class="diffchange diffchange-inline">的活性直接影响这些活性代谢物在血浆中的浓度，进而影响镇痛效果。</del></li></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <br>吗啡在肝脏代谢为 吗啡-6-葡萄糖醛酸苷 (M6G，活性更强) 和 吗啡-3-葡萄糖醛酸苷。ABCC3 是这些代谢物从肝脏进入血液的主要转运体。ABCC3 <ins class="diffchange diffchange-inline">的活性直接影响这些活性代谢物在 <strong>[[血浆]]</strong> 中的浓度，进而影响镇痛效果。</ins></li></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong>化疗耐药逆转：</strong></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> <li style="margin-bottom: 12px;"><strong>化疗耐药逆转：</strong></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <br>针对 ABCC3 的特异性抑制剂正在开发中，旨在作为化疗增敏剂，特别是对于高表达 ABCC3 <del class="diffchange diffchange-inline">的肝癌和非小细胞肺癌。</del></li></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <br>针对 ABCC3 的特异性抑制剂正在开发中，旨在作为化疗增敏剂，特别是对于高表达 ABCC3 <ins class="diffchange diffchange-inline">的 <strong>[[肝癌]]</strong> 和 <strong>[[非小细胞肺癌]]</strong>。</ins></li></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </ul></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </ul></div></td></tr>
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77921020
https://www.yiliao.com/index.php?title=ABCC3&diff=312237&oldid=prev
77921020：建立内容为“<div style="padding: 0 4%; line-height: 1.8; color: #1e293b; font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', Arial, sans-serif; background-color: #ffffff…”的新页面
2025-12-31T20:41:36Z
<p>建立内容为“<div style="padding: 0 4%; line-height: 1.8; color: #1e293b; font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', Arial, sans-serif; background-color: #ffffff…”的新页面</p>
<p><b>新页面</b></p><div><div style="padding: 0 4%; line-height: 1.8; color: #1e293b; font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', Arial, sans-serif; background-color: #ffffff; max-width: 1200px; margin: auto;"><br />
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<strong>ABCC3</strong>，更常被称为 <strong>MRP3</strong>（Multidrug Resistance-associated Protein 3），是 ATP 结合盒 (ABC) 转运蛋白家族的一员。在肝脏解毒和胆汁代谢网络中，ABCC3 扮演着独特的<strong>“代偿性救援者”</strong>角色。与其位于毛细胆管膜（Apical）负责将毒素排入胆汁的“兄弟” [[ABCC2]] (MRP2) 不同，ABCC3 特异性定位于肝细胞的<strong>侧基底膜</strong> (Basolateral Membrane)。这意味着它将底物（主要是<strong>[[葡萄糖醛酸]]</strong>结合物和胆盐）从肝细胞泵回<strong>血液</strong>循环。在正常生理下其表达量较低，但在<strong>[[胆汁淤积]]</strong>或 ABCC2 功能缺失（如 Dubin-Johnson 综合征）时，ABCC3 会被显著上调，将积聚的毒性胆汁酸排出至血液以便经肾脏清除，从而保护肝脏免受损伤。同时，这种“泵回血液”的机制也导致了肿瘤细胞对[[甲氨蝶呤]]等化疗药物的耐药。<br />
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<div style="font-size: 1.2em; font-weight: bold; letter-spacing: 1.2px;">ABCC3 (MRP3)</div><br />
<div style="font-size: 0.7em; opacity: 0.85; margin-top: 4px; white-space: nowrap;">Basolateral Efflux Pump (点击展开)</div><br />
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[[Image:hepatocyte_bile_acid_transport_MRP2_MRP3.png|100px|肝细胞转运极性示意]]<br />
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<div style="font-size: 0.8em; color: #64748b; margin-top: 12px; font-weight: 600;">侧基底膜外排泵 / 胆汁淤积代偿</div><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0; width: 40%;">基因符号</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;"><strong>ABCC3</strong></td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">常用别名</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">MRP3, MOAT-D</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">染色体位置</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">17q21.33</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">Entrez ID</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #1e40af;">8714</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">OMIM ID</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #1e40af;">604323</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">UniProt</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #1e40af;">O15438</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">蛋白长度</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">1527 AA</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">分子量</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">~169.3 kDa</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">亚细胞定位</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">侧基底膜 (Basolateral)</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">关键底物</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">[[胆盐]], [[葡萄糖醛酸苷]], [[甲氨蝶呤]]</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569;">功能分类</th><br />
<td style="padding: 6px 12px; color: #0f172a;">外排泵 (Efflux Pump)</td><br />
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<h2 style="background: #f1f5f9; color: #0f172a; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #0f172a; font-weight: bold;">分子机制：方向决定命运</h2><br />
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ABCC3 的功能核心在于其转运方向与我们通常认知的“排毒入胆汁”相反，它是“排毒回血液”。<br />
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<li style="margin-bottom: 12px;"><strong>侧基底膜转运 (Basolateral Efflux)：</strong><br />
<br>肝细胞具有极性：面向胆管的是毛细胆管膜（Apical），面向血液的是侧基底膜（Basolateral）。大多数外排泵（如 MRP2, MDR1, BSEP）位于 Apical 面，将物质排入胆汁。而 <strong>ABCC3/MRP3</strong> 位于 Basolateral 面，消耗 ATP 将底物泵入肝窦血液循环。</li><br />
<li style="margin-bottom: 12px;"><strong>底物特异性：</strong><br />
<br>ABCC3 对有机阴离子具有广泛亲和力，特别是<strong>[[葡萄糖醛酸]]</strong>结合物（如胆红素-葡萄糖醛酸苷、吗啡-6-葡萄糖醛酸苷）和单价胆盐。</li><br />
<li style="margin-bottom: 12px;"><strong>诱导表达与代偿：</strong><br />
<br>ABCC3 的表达受核受体（如 [[FXR]], [[PXR]]）调控。在胆汁淤积状态下，胆汁酸激活这些受体，大幅上调 ABCC3 的表达。这形成了一种保护机制：当胆汁排泄受阻（路不通）时，ABCC3 打开“后门”，将有毒胆汁酸泵回血液，通过肾脏排出（导致尿液变色），从而减轻肝细胞内的毒性积聚。</li><br />
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<h2 style="background: #f1f5f9; color: #0f172a; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #0f172a; font-weight: bold;">临床景观：胆汁淤积与化疗耐药</h2><br />
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ABCC3 的临床意义主要体现在肝病代偿机制和肿瘤多药耐药两个方面。<br />
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<th style="padding: 12px; border: 1px solid #cbd5e1; color: #0f172a; width: 25%;">疾病/状态</th><br />
<th style="padding: 12px; border: 1px solid #cbd5e1; color: #475569;">分子机制</th><br />
<th style="padding: 12px; border: 1px solid #cbd5e1; color: #1e40af;">临床特征/意义</th><br />
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<td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">[[Dubin-Johnson综合征]]</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">ABCC2 缺失 -> <strong>ABCC3 上调</strong></td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">该病原因为 ABCC2 (MRP2) 突变导致结合胆红素无法排入胆汁。患者肝脏中 ABCC3 显著上调，将结合胆红素泵回血液，导致特征性的<strong>结合性高胆红素血症</strong>和尿胆红素阳性，但肝损伤通常较轻。</td><br />
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<td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">[[肝细胞癌]] / [[胰腺癌]]</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">过表达 (Overexpression)</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">ABCC3 在多种肿瘤中高表达，将化疗药物（如[[依托泊苷]], [[替尼泊苷]], [[甲氨蝶呤]]）泵出细胞，导致<strong>多药耐药 (MDR)</strong>。高表达通常与不良预后相关。</td><br />
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<td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">阻塞性黄疸</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">胆汁酸诱导</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">在胆道梗阻时，ABCC3 是防止肝坏死的最后防线。它改变了胆盐的排泄途径（从粪便转向尿液）。</td><br />
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<li style="margin-bottom: 12px;"><strong>吗啡代谢：</strong><br />
<br>吗啡在肝脏代谢为 吗啡-6-葡萄糖醛酸苷 (M6G，活性更强) 和 吗啡-3-葡萄糖醛酸苷。ABCC3 是这些代谢物从肝脏进入血液的主要转运体。ABCC3 的活性直接影响这些活性代谢物在血浆中的浓度，进而影响镇痛效果。</li><br />
<li style="margin-bottom: 12px;"><strong>化疗耐药逆转：</strong><br />
<br>针对 ABCC3 的特异性抑制剂正在开发中，旨在作为化疗增敏剂，特别是对于高表达 ABCC3 的肝癌和非小细胞肺癌。</li><br />
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<h2 style="background: #f1f5f9; color: #0f172a; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #0f172a; font-weight: bold;">关键关联概念</h2><br />
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<li style="margin-bottom: 12px;"><strong>[[ABCC2]] (MRP2)：</strong> ABCC3 的功能对立面（Apical 排泄泵）。</li><br />
<li style="margin-bottom: 12px;"><strong>[[葡萄糖醛酸]] (Glucuronidation)：</strong> ABCC3 转运底物的主要化学修饰。</li><br />
<li style="margin-bottom: 12px;"><strong>[[胆汁淤积]]：</strong> 触发 ABCC3 上调的主要病理状态。</li><br />
<li style="margin-bottom: 12px;"><strong>[[甲氨蝶呤]]：</strong> 受 ABCC3 外排影响的关键化疗药物。</li><br />
<li style="margin-bottom: 12px;"><strong>[[肠肝循环]]：</strong> ABCC3 将物质泵回血液是该循环的关键环节。</li><br />
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<span style="color: #0f172a; font-weight: bold; font-size: 1.05em; display: inline-block; margin-bottom: 15px;">学术参考文献与权威点评</span><br />
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[1] <strong>Kool M, et al. (1997).</strong> <em>Analysis of expression of cMOAT (MRP2), MRP3, MRP4, and MRP5, homologues of the multidrug resistance-associated protein gene (MRP1), in human cancer cell lines.</em> <strong>[[Cancer Research]]</strong>. <br><br />
<span style="color: #475569;">[学术点评]：发现与克隆。该研究首次系统鉴定了 MRP 家族的新成员，包括 MRP3，并观察到其在 MRP2 缺陷细胞系中的代偿性过表达，奠定了其作为“代偿泵”的功能基础。</span><br />
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[2] <strong>Hirohashi T, et al. (2000).</strong> <em>ATP-dependent transport of bile salts by rat multidrug resistance-associated protein 3 (Mrp3).</em> <strong>[[Journal of Biological Chemistry]] (JBC)</strong>. <br><br />
<span style="color: #475569;">[学术点评]：定位与功能。明确证实了 MRP3 定位于肝细胞的侧基底膜（Basolateral），并具有转运胆盐的能力，从而确立了其在胆汁淤积中将胆盐泵回血液的保护机制。</span><br />
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[3] <strong>Zelcer N, et al. (2001).</strong> <em>Characterization of drug transport by the human multidrug resistance protein 3 (MRP3).</em> <strong>[[Journal of Biological Chemistry]] (JBC)</strong>. <br><br />
<span style="color: #475569;">[学术点评]：底物谱。详细解析了 ABCC3 对葡萄糖醛酸结合物（特别是 E217βG 和 依托泊苷-葡萄糖醛酸苷）的高亲和力，解释了其介导特定化疗药物耐药的生化机制。</span><br />
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<div style="background-color: #0f172a; color: #ffffff; text-align: center; font-weight: bold; padding: 10px; letter-spacing: 1px;">ABCC3 (MRP3) · 知识图谱关联</div><br />
<div style="padding: 15px; background: #ffffff; line-height: 2.2; text-align: center; text-decoration: none;"><br />
[[ABCC2]] • [[胆汁淤积]] • [[Dubin-Johnson综合征]] • [[葡萄糖醛酸]] • [[甲氨蝶呤]] • [[FXR]] • [[多药耐药]] • [[肝细胞癌]] • [[依托泊苷]] • [[侧基底膜]]<br />
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