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FLCN - 版本历史
2026-04-19T00:39:44Z
本wiki的该页面的版本历史
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https://www.yiliao.com/index.php?title=FLCN&diff=315364&oldid=prev
2026年1月22日 (四) 09:12 77921020
2026-01-22T09:12:29Z
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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;">2026年1月22日 (四) 09:12的版本</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >第1行：</td>
<td colspan="2" class="diff-lineno">第1行：</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><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;"></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><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;"><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="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> </div></td><td colspan="2"> </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><del class="diffchange diffchange-inline">```</del></div></td><td colspan="2"> </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><div style="margin-bottom: 30px; border-bottom: 1.2px solid #e2e8f0; padding-bottom: 25px;"></div></td><td colspan="2"> </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="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> <strong>FLCN</strong>（Folliculin），即卵泡素蛋白基因，是一种高度保守的<strong>[[肿瘤抑制基因]]</strong>。FLCN 蛋白与 FNIP1/FNIP2 形成复合物，作为 <strong>[[Rag GTP酶]]</strong>（主要是 RagC/D）的 GTP 酶激活蛋白 (GAP)，在溶酶体表面精细调控 <strong>[[mTORC1]]</strong> 信号通路的活性。FLCN 的生殖系突变是常染色体显性遗传病——<strong>[[Birt-Hogg-Dubé综合征]]</strong> (BHD) 的致病原因。BHD 患者临床表现为典型的“皮肤-肺-肾”三联征：面部多发性<strong>[[纤维毛囊瘤]]</strong>、肺基底多发囊肿伴自发性<strong>[[气胸]]</strong>，以及罹患双侧多灶性<strong>[[肾细胞癌]]</strong>（特别是嫌色细胞癌和嗜酸细胞瘤）的高风险。</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> <strong>FLCN</strong>（Folliculin），即卵泡素蛋白基因，是一种高度保守的<strong>[[肿瘤抑制基因]]</strong>。FLCN 蛋白与 FNIP1/FNIP2 形成复合物，作为 <strong>[[Rag GTP酶]]</strong>（主要是 RagC/D）的 GTP 酶激活蛋白 (GAP)，在溶酶体表面精细调控 <strong>[[mTORC1]]</strong> 信号通路的活性。FLCN 的生殖系突变是常染色体显性遗传病——<strong>[[Birt-Hogg-Dubé综合征]]</strong> (BHD) 的致病原因。BHD 患者临床表现为典型的“皮肤-肺-肾”三联征：面部多发性<strong>[[纤维毛囊瘤]]</strong>、肺基底多发囊肿伴自发性<strong>[[气胸]]</strong>，以及罹患双侧多灶性<strong>[[肾细胞癌]]</strong>（特别是嫌色细胞癌和嗜酸细胞瘤）的高风险。</div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l18" >第18行：</td>
<td colspan="2" class="diff-lineno">第15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="padding: 25px; text-align: center; background-color: #f8fafc;"></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="padding: 25px; text-align: center; background-color: #f8fafc;"></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 style="display: inline-block; background: #ffffff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 20px; box-shadow: 0 4px 10px rgba(0,0,0,0.04);"></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="display: inline-block; background: #ffffff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 20px; box-shadow: 0 4px 10px rgba(0,0,0,0.04);"></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> [[Image:FLCN_FNIP2_structure_complex.png|100px|FLCN-FNIP2 复合物结构]]</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> [[Image:FLCN_FNIP2_structure_complex.png|100px|FLCN-FNIP2 复合物结构<ins class="diffchange diffchange-inline">|链接=Special:FilePath/FLCN_FNIP2_structure_complex.png</ins>]]</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 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="font-size: 0.8em; color: #64748b; margin-top: 12px; font-weight: 600;">mTORC1 调控 / 溶酶体定位</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 style="font-size: 0.8em; color: #64748b; margin-top: 12px; font-weight: 600;">mTORC1 调控 / 溶酶体定位</div></div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l85" >第85行：</td>
<td colspan="2" class="diff-lineno">第82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> <br>FLCN 必须与 <strong>[[FNIP1]]</strong> 或 <strong>[[FNIP2]]</strong> 形成异源二聚体才能稳定存在。在氨基酸匮乏时，FLCN-FNIP 复合物聚集在溶酶体表面；当氨基酸充足时，它们协助 mTORC1 感知营养信号。</li></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> <br>FLCN 必须与 <strong>[[FNIP1]]</strong> 或 <strong>[[FNIP2]]</strong> 形成异源二聚体才能稳定存在。在氨基酸匮乏时，FLCN-FNIP 复合物聚集在溶酶体表面；当氨基酸充足时，它们协助 mTORC1 感知营养信号。</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="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>[[Image:FLCN_mTORC1_signaling_pathway.png|100px|FLCN 调控 Rag GTPase 与 mTORC1]]</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>[[Image:FLCN_mTORC1_signaling_pathway.png|100px|FLCN 调控 Rag GTPase 与 mTORC1<ins class="diffchange diffchange-inline">|链接=Special:FilePath/FLCN_mTORC1_signaling_pathway.png</ins>]]</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 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: #fff1f2; color: #9f1239; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #9f1239; font-weight: bold;">临床警示：Birt-Hogg-Dubé 综合征 (BHD)</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: #fff1f2; color: #9f1239; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #9f1239; font-weight: bold;">临床警示：Birt-Hogg-Dubé 综合征 (BHD)</h2></div></td></tr>
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<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> <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></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> <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></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><del class="diffchange diffchange-inline"> </del></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> </div></td></tr>
<tr><td colspan="2"> </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><ins class="diffchange diffchange-inline"> </ins></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="margin: 12px 0; border-bottom: 1px solid #e2e8f0; padding-bottom: 10px;"></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="margin: 12px 0; border-bottom: 1px solid #e2e8f0; padding-bottom: 10px;"></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> [1] <strong>Nickerson ML, Warren MB, Toro JR, et al. (2002).</strong> <em>Mutations in a novel gene lead to kidney tumors, lung wall defects, and benign tumors of the hair follicle in patients with the Birt-Hogg-Dubé syndrome.</em> <strong>[[Cancer Cell]]</strong>. 2002;2(2):157-164.<br></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> [1] <strong>Nickerson ML, Warren MB, Toro JR, et al. (2002).</strong> <em>Mutations in a novel gene lead to kidney tumors, lung wall defects, and benign tumors of the hair follicle in patients with the Birt-Hogg-Dubé syndrome.</em> <strong>[[Cancer Cell]]</strong>. 2002;2(2):157-164.<br></div></td></tr>
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77921020
https://www.yiliao.com/index.php?title=FLCN&diff=315361&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
2026-01-22T09:11:57Z
<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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<p style="font-size: 1.1em; margin: 10px 0; color: #334155; text-align: justify;"><br />
<strong>FLCN</strong>（Folliculin），即卵泡素蛋白基因，是一种高度保守的<strong>[[肿瘤抑制基因]]</strong>。FLCN 蛋白与 FNIP1/FNIP2 形成复合物，作为 <strong>[[Rag GTP酶]]</strong>（主要是 RagC/D）的 GTP 酶激活蛋白 (GAP)，在溶酶体表面精细调控 <strong>[[mTORC1]]</strong> 信号通路的活性。FLCN 的生殖系突变是常染色体显性遗传病——<strong>[[Birt-Hogg-Dubé综合征]]</strong> (BHD) 的致病原因。BHD 患者临床表现为典型的“皮肤-肺-肾”三联征：面部多发性<strong>[[纤维毛囊瘤]]</strong>、肺基底多发囊肿伴自发性<strong>[[气胸]]</strong>，以及罹患双侧多灶性<strong>[[肾细胞癌]]</strong>（特别是嫌色细胞癌和嗜酸细胞瘤）的高风险。<br />
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<div style="font-size: 1.2em; font-weight: bold; letter-spacing: 1.2px;">FLCN / Folliculin</div><br />
<div style="font-size: 0.7em; opacity: 0.85; margin-top: 4px; white-space: nowrap;">BHD Syndrome Gene (点击展开)</div><br />
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[[Image:FLCN_FNIP2_structure_complex.png|100px|FLCN-FNIP2 复合物结构]]<br />
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<div style="font-size: 0.8em; color: #64748b; margin-top: 12px; font-weight: 600;">mTORC1 调控 / 溶酶体定位</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;">FLCN</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">别名</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">BHD, FLCL</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;">17p11.2</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 Gene</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">201163</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 ID</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">Q8NFG4</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 编号</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">607273</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">蛋白功能</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #1e40af;">RagC/D GAP (GTP酶激活)</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">氨基酸数</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #b91c1c;"><strong>579 aa</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;">分子量</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">64.5 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;">关键伙伴</th><br />
<td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #1e40af;"><strong>[[FNIP1]]</strong>, [[FNIP2]], [[AMPK]]</td><br />
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<th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569;">临床意义</th><br />
<td style="padding: 6px 12px; color: #b91c1c;">BHD综合征, 肾癌, 气胸</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：溶酶体上的营养开关</h2><br />
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FLCN 的核心功能是作为营养感应机制的一部分，调控细胞生长的总开关——mTORC1。<br />
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<li style="margin-bottom: 12px;"><strong>GAP 活性 (GAP Activity)：</strong><br />
<br>FLCN 含有一个独特的 Longin 结构域和 DENN 样结构域。它作为 <strong>[[RagC]]</strong> 和 <strong>[[RagD]]</strong> 的 GTP 酶激活蛋白 (GAP)，促使 RagC/D 水解 GTP 变为 GDP 结合状态。这种特定的核苷酸状态（RagA/B-GTP + RagC/D-GDP）对于将 mTORC1 招募到溶酶体表面并进行激活是必不可少的。<br />
<br><em>悖论：</em> 虽然 FLCN 促进 mTORC1 激活，但在肾癌中 FLCN 的<strong>缺失</strong>反而导致 mTOR 通路的反常激活（可能通过非经典途径或反馈调节），体现了其复杂的稳态调节作用。</li><br />
<li style="margin-bottom: 12px;"><strong>溶酶体定位 (Lysosomal Targeting)：</strong><br />
<br>FLCN 必须与 <strong>[[FNIP1]]</strong> 或 <strong>[[FNIP2]]</strong> 形成异源二聚体才能稳定存在。在氨基酸匮乏时，FLCN-FNIP 复合物聚集在溶酶体表面；当氨基酸充足时，它们协助 mTORC1 感知营养信号。</li><br />
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[[Image:FLCN_mTORC1_signaling_pathway.png|100px|FLCN 调控 Rag GTPase 与 mTORC1]]<br />
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<h2 style="background: #fff1f2; color: #9f1239; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #9f1239; font-weight: bold;">临床警示：Birt-Hogg-Dubé 综合征 (BHD)</h2><br />
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<h3 style="margin-top: 0; color: #be123c; font-size: 1.1em;">全身性病变的遗传根源</h3><br />
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FLCN 基因的胚系突变导致 <strong>[[Birt-Hogg-Dubé综合征]]</strong>，这是一种常染色体显性遗传性肿瘤综合征。最常见的突变热点是外显子 11 中的胞嘧啶插入/缺失 (<strong>c.1285dupC</strong> 或 delC)，导致蛋白截短和功能丧失。<br />
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<strong>致死性风险：肾癌</strong><br><br />
BHD 患者终生罹患肾癌的风险较常人高 7 倍。其病理类型独特，常为双侧、多灶性的<strong>[[嫌色细胞癌]]</strong> (Chromophobe RCC) 或<strong>[[嗜酸细胞/嫌色细胞混合瘤]]</strong> (Hybrid Oncocytic/Chromophobe Tumor, HOCT)。这与常见的透明细胞癌不同，具有独特的生物学行为。<br />
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<th style="padding: 12px; border: 1px solid #cbd5e1; color: #0f172a; width: 25%;">受累器官</th><br />
<th style="padding: 12px; border: 1px solid #cbd5e1; color: #475569;">典型表现</th><br />
<th style="padding: 12px; border: 1px solid #cbd5e1; color: #1e40af;">临床建议</th><br />
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<td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">皮肤</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">[[纤维毛囊瘤]] (Fibrofolliculomas)</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">通常在 20-30 岁出现，表现为面部、颈部白色圆顶状丘疹。虽为良性，却是 BHD 的重要诊断线索。</td><br />
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<td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">肺部</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">多发肺囊肿 & [[气胸]]</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">80% 以上患者有肺基底部囊肿。自发性气胸风险极高（较常人高 50 倍），需避免吸烟和深潜。</td><br />
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<td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">肾脏</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">[[肾细胞癌]] (RCC)</td><br />
<td style="padding: 10px; border: 1px solid #cbd5e1;">建议从 20 岁开始每年进行 MRI 筛查。肿瘤生长缓慢，通常建议遵循“3cm 规则”进行保留肾单位的手术。</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;">治疗策略与管理</h2><br />
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目前尚无恢复 FLCN 功能的基因疗法，主要的管理策略是监测和对症治疗。<br />
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<li style="margin-bottom: 12px;"><strong>mTOR 抑制剂：</strong><br />
<br>鉴于 FLCN 缺失导致的 mTOR 通路异常激活（特别是在肾癌组织中），<strong>[[依维莫司]]</strong> (Everolimus) 和 <strong>[[西罗莫司]]</strong> (Sirolimus) 等 mTOR 抑制剂在晚期 BHD 相关肾癌中显示出治疗潜力。</li><br />
<li style="margin-bottom: 12px;"><strong>主动监测 (Active Surveillance)：</strong><br />
<br>对于小于 3cm 的肾脏肿瘤，首选影像学监测而非立即手术，以最大限度保护患者的肾功能，因为患者常面临双侧多发复发的风险。</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>Nickerson ML, Warren MB, Toro JR, et al. (2002).</strong> <em>Mutations in a novel gene lead to kidney tumors, lung wall defects, and benign tumors of the hair follicle in patients with the Birt-Hogg-Dubé syndrome.</em> <strong>[[Cancer Cell]]</strong>. 2002;2(2):157-164.<br><br />
<span style="color: #475569;">[学术点评]：发现之源。美国 NCI 团队首次通过连锁分析定位并克隆了 FLCN 基因，确立了其作为 BHD 综合征致病基因的地位。</span><br />
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[2] <strong>Tsun ZY, Bar-Peled L, Chantranupong L, et al. (2013).</strong> <em>The folliculin tumor suppressor is a GAP for the RagC/D GTPases that signal amino acid levels to mTORC1.</em> <strong>[[Molecular Cell]]</strong>. 2013;52(4):495-505.<br><br />
<span style="color: #475569;">[学术点评]：机制突破。Sabatini 实验室揭示了 FLCN 难以捉摸的分子功能，证实它是 RagC/D 的 GAP，建立了 FLCN 与 mTORC1 信号转导的直接生化联系。</span><br />
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[3] <strong>Schmidt LS, Linehan WM. (2018).</strong> <em>FLCN: The causative gene for Birt-Hogg-Dubé syndrome.</em> <strong>[[Gene]]</strong>. 2018;640:28-42.<br><br />
<span style="color: #475569;">[学术点评]：权威综述。全面总结了 FLCN 的遗传学、分子功能及其在肾癌发生中的作用，详细阐述了临床表型与基因型的相关性。</span><br />
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FLCN · 知识图谱<br />
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<td style="width: 85px; background-color: #f8fafc; color: #334155; font-weight: 600; padding: 10px 12px; text-align: right; vertical-align: middle; white-space: nowrap;">互作蛋白</td><br />
<td style="padding: 10px 15px; color: #334155;">[[FNIP1]] • [[FNIP2]] • [[RagC]] • [[RagD]] • [[AMPK]]</td><br />
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<td style="width: 85px; background-color: #f8fafc; color: #334155; font-weight: 600; padding: 10px 12px; text-align: right; vertical-align: middle; white-space: nowrap;">相关通路</td><br />
<td style="padding: 10px 15px; color: #334155;">[[mTOR信号通路]] • [[溶酶体]]定位 • [[自噬]] • [[缺氧反应]]</td><br />
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<td style="width: 85px; background-color: #f8fafc; color: #334155; font-weight: 600; padding: 10px 12px; text-align: right; vertical-align: middle; white-space: nowrap;">BHD三联征</td><br />
<td style="padding: 10px 15px; color: #334155;">[[纤维毛囊瘤]] (皮) • [[肺囊肿]]/[[气胸]] (肺) • [[嫌色细胞癌]] (肾)</td><br />
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<td style="width: 85px; background-color: #f8fafc; color: #334155; font-weight: 600; padding: 10px 12px; text-align: right; vertical-align: middle; white-space: nowrap;">突变热点</td><br />
<td style="padding: 10px 15px; color: #334155;">Exon 11 (c.1285dupC) • [[截短突变]] • 单倍剂量不足 (Haploinsufficiency)</td><br />
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