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免疫沙漠型 - 版本历史
2026-04-19T02:59:55Z
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2025年12月28日 (日) 08:45 77921020
2025-12-28T08:45:47Z
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<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">[Image of immune desert tumor microenvironment vs inflamed]</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 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> [[文件:Immune_Desert_Spatial_Logic.png|200px|免疫沙漠型示意图]]</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> [[文件:Immune_Desert_Spatial_Logic.png|200px|免疫沙漠型示意图]]</div></td></tr>
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<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"> <div style="padding: 15px; background: #ffffff; line-height: 2; text-align: center;"></ins></div></td></tr>
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77921020
https://www.yiliao.com/index.php?title=%E5%85%8D%E7%96%AB%E6%B2%99%E6%BC%A0%E5%9E%8B&diff=311145&oldid=prev
77921020：建立内容为“<div style="padding: 0 2%; line-height: 1.8; color: #1e293b; font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', Arial, sans-serif; background-color: #ffffff…”的新页面
2025-12-28T08:44:37Z
<p>建立内容为“<div style="padding: 0 2%; 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 2%; line-height: 1.8; color: #1e293b; font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', Arial, sans-serif; background-color: #ffffff;"><br />
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<strong>免疫沙漠型</strong>（Immune Desert Phenotype）是[[肿瘤微环境]]（TME）的三种核心空间表型之一，又称“冷肿瘤”（Cold Tumor）。其特征为肿瘤实质及其周边的基质区域均极度缺乏[[T细胞]]浸润。由于缺乏预存的[[免疫应答]]，此类肿瘤对[[免疫检查点抑制剂]]（如 PD-1 阻断剂）通常不产生响应，是当前[[精准医学]]与[[细胞治疗]]亟需攻克的重难点。<br />
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<div style="font-size: 1.25em; font-weight: bold; letter-spacing: 1px;">免疫沙漠 · 空间全息图</div><br />
<div style="font-size: 0.75em; opacity: 0.8; margin-top: 4px; white-space: nowrap;">Immune Desert Phenotype (点击展开详细数据)</div><br />
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[Image of immune desert tumor microenvironment vs inflamed]<br />
[[文件:Immune_Desert_Spatial_Logic.png|200px|免疫沙漠型示意图]]<br />
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<div style="font-size: 0.85em; color: #64748b; margin-top: 15px; font-weight: 600;">极低淋巴细胞浸润的组织学特征</div><br />
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<td style="padding: 12px 18px; border-bottom: 1px solid #f1f5f9; color: #1e293b;">[[TILs]]缺失 / 低抗原性</td><br />
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<th style="text-align: left; padding: 12px 18px; border-bottom: 1px solid #f1f5f9; color: #64748b; font-weight: 600; background-color: #fcfdfe;">分子机理</th><br />
<td style="padding: 12px 18px; border-bottom: 1px solid #f1f5f9; color: #1e293b;">[[MHC-I]]丢失 / 信号沉默</td><br />
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<td style="padding: 12px 18px; color: #1e293b; font-weight: bold;">[[引燃肿瘤]] (Igniting)</td><br />
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<h2 style="background: linear-gradient(to right, #1e3a8a, #ffffff); color: #ffffff; padding: 8px 15px; border-radius: 4px; font-size: 1.2em; margin-top: 35px;">免疫沙漠形成的核心机制</h2><br />
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免疫沙漠型的形成并非由于单一物理屏障，而是由免疫识别与启动阶段的“多点失效”引起的：<br />
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<li style="margin-bottom: 12px;"><strong>[[抗原递呈]]失效：</strong> 肿瘤细胞通过丢失 [[HLA]] 分子或下调 [[TAP]] 蛋白，实现“隐身”，导致外周免疫系统无法识别[[新抗原]]。</li><br />
<li style="margin-bottom: 12px;"><strong>趋化因子沉默：</strong> 缺乏启动淋巴细胞募集的关键信号（如 [[CXCL9]]/[[CXCL10]]），导致免疫细胞无法向肿瘤病灶“归巢”。</li><br />
<li style="margin-bottom: 12px;"><strong>代谢抑制环境：</strong> 肿瘤内高度[[缺氧]]或累积过量[[腺苷]]，在极早期阶段即抑制了 [[T细胞]] 的存活与增殖。</li><br />
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<h2 style="background: linear-gradient(to right, #1e3a8a, #ffffff); color: #ffffff; padding: 8px 15px; border-radius: 4px; font-size: 1.2em; margin-top: 35px;">生物治疗中的“转冷为热”策略</h2><br />
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<h3 style="color: #1e40af; border-bottom: 2px solid #dbeafe; display: inline-block; padding-bottom: 3px; margin-top: 20px;">1. 诱导免疫原性细胞死亡（ICD）</h3><br />
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针对沙漠型肿瘤，[[免疫决策]]的首选是“打破沉默”：<br />
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<li style="margin-bottom: 10px;"><strong>[[溶瘤病毒]]（OV）：</strong> 通过病毒感染直接裂解肿瘤，释放[[损伤相关分子模式]]（DAMPs），招募天然免疫细胞。</li><br />
<li style="margin-bottom: 10px;"><strong>个性化[[癌症疫苗]]：</strong> 基于[[单细胞组学]]预测的新抗原多肽疫苗，人为建立免疫识别基础。</li><br />
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<h3 style="color: #1e40af; border-bottom: 2px solid #dbeafe; display: inline-block; padding-bottom: 3px; margin-top: 20px;">2. 装甲型细胞治疗方案</h3><br />
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<li style="margin-bottom: 8px;"><strong>[[CAR-T]] 旁分泌因子：</strong> 工程化 T 细胞在到达肿瘤后主动分泌 [[IL-12]] 或引发 [[STING通路]] 激活，强行重塑微环境。</li><br />
<li style="margin-bottom: 8px;"><strong>[[双特异性抗体]]：</strong> 通过 CD3-靶向抗体将外周 T 细胞强行牵引至肿瘤表面，跳过抗原递呈环节。</li><br />
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<th style="padding: 12px; border: 1px solid #e2e8f0; color: #1e3a8a;">比较维度</th><br />
<th style="padding: 12px; border: 1px solid #e2e8f0; color: #1e3a8a;">免疫浸润型 (Hot)</th><br />
<th style="padding: 12px; border: 1px solid #e2e8f0; color: #1e3a8a;">免疫沙漠型 (Desert)</th><br />
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<td style="padding: 10px; border: 1px solid #e2e8f0; font-weight: bold;">[[TMB]] (突变负荷)</td><br />
<td style="padding: 10px; border: 1px solid #e2e8f0;">通常较高</td><br />
<td style="padding: 10px; border: 1px solid #e2e8f0;">显著偏低</td><br />
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<td style="padding: 10px; border: 1px solid #e2e8f0; font-weight: bold;">PD-1/PD-L1 响应</td><br />
<td style="padding: 10px; border: 1px solid #e2e8f0; color: #16a34a;">响应率高</td><br />
<td style="padding: 10px; border: 1px solid #e2e8f0; color: #dc2626;">原发性耐药为主</td><br />
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<h2 style="background: linear-gradient(to right, #1e3a8a, #ffffff); color: #ffffff; padding: 8px 15px; border-radius: 4px; font-size: 1.2em; margin-top: 35px;">2025 AI 全息决策建议</h2><br />
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在 2025 年的临床决策中，免疫沙漠型的诊断已不仅仅依赖常规染色：<br />
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<li style="margin-bottom: 10px;"><strong>[[全息数字化]]筛查：</strong> 利用[[空间免疫学]]技术在切片全局寻找微小的[[三级淋巴结构]]芽点，判断是否为“伪沙漠”。</li><br />
<li style="margin-bottom: 10px;"><strong>序贯模拟：</strong> [[辅助决策系统]]根据肿瘤克隆演化模型，建议在[[放疗]]增敏后再介入免疫治疗。</li><br />
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[1] Chen D S, Mellman I. "Elements of cancer immunity and the cancer-immune</div>
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