肿瘤血管既是"靶点"也是"屏障"：两篇高被引论文里的原代细胞用法

肿瘤血管研究有一个长期的矛盾：血管给肿瘤供氧供能，是治疗的靶点；但血管同时又是药物进入肿瘤的必经通道，破坏它可能反而阻断给药。理解这个矛盾，需要能在体外把"肿瘤血管"和"正常血管"分开研究。

这里有两篇论文，恰好展示了两种典型用法。

一、把肿瘤血管当靶点：靶向 ICAM-1 的 CAR-T

Scientific Reports 2019;9:10634：Manufacturing and preclinical validation of CAR T cells targeting ICAM-1 for advanced thyroid cancer therapy（靶向 ICAM-1 的 CAR-T 细胞用于晚期甲状腺癌治疗的制备与临床前验证）。

ICAM-1（CD54）在多种肿瘤细胞与肿瘤相关血管内皮上高表达，在静息状态下的正常组织表达较低——这正是它作为靶点的理由。该研究完成了从载体制备到临床前验证的完整链条，使用的细胞包括 H-6053 人原代肺泡上皮细胞（作为正常组织/毒性评估的对照细胞）与 BALB-5053。

方法学启示：CAR-T 的临床前评价里，"对正常细胞的毒性"与"对靶细胞的杀伤"同等重要。用原代正常细胞做脱靶评估，比用细胞系更接近真实组织。

二、把血管当机制对象：Oct4 与血管生成

Nature Communications 2019;10:967：Perivascular cell-specific knockout of the stem cell pluripotency gene Oct4 inhibits angiogenesis（血管周细胞特异性敲除干细胞多能性基因 Oct4 抑制血管生成）。

研究使用 C57-6052 小鼠主动脉内皮细胞，验证了血管周细胞中 Oct4 对血管生成的调控作用。这条线索把"干细胞多能性因子"和"血管稳态"连了起来，也说明血管壁上的细胞不是被动结构。

方法学启示：基因敲除小鼠来源的原代内皮细胞，是"体内表型 → 体外机制"这条链条上最直接的验证材料。用 siRNA 敲低替代基因型敲除，在血管内皮上经常打不干净。

三、肿瘤相关内皮细胞（TEC）为什么难做，又为什么值得做

TEC 与正常组织内皮在形态、通透性、黏附分子表达、对 VEGF 的依赖性上都不同——它更"漏"、更无序、更依赖旁分泌。但 TEC 极难从临床标本中分离：肿瘤组织酶解后内皮细胞占比很低，且容易混入肿瘤细胞与成纤维细胞。

这也是为什么"有现货 TEC"很关键：它把"能不能拿到足够数量的肿瘤来源内皮"这个问题，从实验风险变成了采购问题。

Cell Biologics 的肿瘤相关内皮细胞与人、小鼠的正常内皮细胞并列供应，可做同源对照：

四、一句话总结

血管生成研究的体外部分，成败往往不在检测方法，而在细胞选得对不对、对照配得齐不齐。

本产品仅供科研使用（RUO），不用于人体、临床诊断或治疗用途。文献信息引自公开发表的论文。

Cell Biologics 的肿瘤相关内皮细胞与人、小鼠的正常内皮细胞并列供应，可做同源对照：",null]]},"children":[],"parentTable":"block","enabled":true}}}}},{"blockId":"2HdrBeJNeqNnk0au43CxTY","blockSubtree":{"block":{"2HdrBeJNeqNnk0au43CxTY":{"role":"editor","value":{"id":"2HdrBeJNeqNnk0au43CxTY","parentId":"","type":"simple_table","props":{"tableColumnOrder":["C6sdpvqC","aAYvSBzg"],"tableColumnWidthMap":{"C6sdpvqC":120,"aAYvSBzg":120},"tableRowHeader":true},"children":["Pxoo8RizwWLIwCkEDJRCwP","Uvd5hIYCbKmFUvkBXERbzS","PM2v7AywdWdTYJqIQnGKYg","0qqo1qTjwRaNC9rCcPLkeX"],"parentTable":"block","enabled":true}},"Pxoo8RizwWLIwCkEDJRCwP":{"role":"editor","value":{"id":"Pxoo8RizwWLIwCkEDJRCwP","parentId":"2HdrBeJNeqNnk0au43CxTY","type":"simple_table_row","props":{},"children":["LQL2PmXZb6aZcltwJEGXz9","bIkyvKd7bZYR5z0MLExpTm"],"parentTable":"block","enabled":true}},"LQL2PmXZb6aZcltwJEGXz9":{"role":"editor","value":{"id":"LQL2PmXZb6aZcltwJEGXz9","parentId":"Pxoo8RizwWLIwCkEDJRCwP","type":"simple_table_cell","props":{"columnKey":"C6sdpvqC"},"children":["L1iKiXPJaMqD9MN5fWiQ3k"],"parentTable":"block","enabled":true}},"L1iKiXPJaMqD9MN5fWiQ3k":{"role":"editor","value":{"id":"L1iKiXPJaMqD9MN5fWiQ3k","parentId":"LQL2PmXZb6aZcltwJEGXz9","type":"text","props":{"title":[["对照设计",null]]},"children":[],"parentTable":"block","enabled":true}},"bIkyvKd7bZYR5z0MLExpTm":{"role":"editor","value":{"id":"bIkyvKd7bZYR5z0MLExpTm","parentId":"Pxoo8RizwWLIwCkEDJRCwP","type":"simple_table_cell","props":{"columnKey":"aAYvSBzg"},"children":["dJgrmHEUDLJ0glQWlOFa6J"],"parentTable":"block","enabled":true}},"dJgrmHEUDLJ0glQWlOFa6J":{"role":"editor","value":{"id":"dJgrmHEUDLJ0glQWlOFa6J","parentId":"bIkyvKd7bZYR5z0MLExpTm","type":"text","props":{"title":[["目的",null]]},"children":[],"parentTable":"block","enabled":true}},"Uvd5hIYCbKmFUvkBXERbzS":{"role":"editor","value":{"id":"Uvd5hIYCbKmFUvkBXERbzS","parentId":"2HdrBeJNeqNnk0au43CxTY","type":"simple_table_row","props":{},"children":["iRPIjSePPRomyTih6ooV57","TZniDlfbAncyVhc0TaYzv7"],"parentTable":"block","enabled":true}},"iRPIjSePPRomyTih6ooV57":{"role":"editor","value":{"id":"iRPIjSePPRomyTih6ooV57","parentId":"Uvd5hIYCbKmFUvkBXERbzS","type":"simple_table_cell","props":{"columnKey":"C6sdpvqC"},"children":["23lD5FxkpacBTCYwyMqfdy"],"parentTable":"block","enabled":true}},"23lD5FxkpacBTCYwyMqfdy":{"role":"editor","value":{"id":"23lD5FxkpacBTCYwyMqfdy","parentId":"iRPIjSePPRomyTih6ooV57","type":"text","props":{"title":[["肿瘤相关内皮 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