单细胞测序揭示了细胞组成和瘤微环境在皮肤状细胞癌风险分层的变化
Qingyue Xia1,2, Tingting Jiang2,3, Ang Li1,2
1China-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Bejing, China.
这项研究揭示了炎症性癌症相关纤维细胞 (iCAF) 和 γδT 细胞的损失驱动了侵袭性皮肤状细胞癌 (cSCC). 对CXCL8/TGFβ/IGFBP7通路的失调为高风险cSCC患者提供了新的生物标志物.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 皮肤状细胞癌 (cSCC) 是一种高风险的恶性瘤,需要准确的风险分层来有效管理.
- 目前对cSCC的风险分层方法缺乏强大的生物洞察力,阻碍了个性化治疗策略.
- 了解cSCC中的瘤微环境 (TME) 演变对于预测进展和开发向疗法至关重要.
研究的目的:
- 通过不同风险层来研究皮肤状细胞癌 (cSCC) 中瘤微环境 (TME) 动态的分子驱动因素.
- 确定与cSCC进展和转移潜力相关的关键细胞和分子因素.
- 为改善cSCC风险分层和个性化治疗建立生物基础.
主要方法:
- 整合单细胞测序数据与cSCC患者的临床风险概况.
- 在瘤微环境 (TME) 中分析细胞组成和转录特征.
- 分子发现与临床风险评估和上皮层-介质细胞过渡标志物的相关性.
主要成果:
- 非常高风险的cSCC表现出中性粒细胞与淋巴细胞的比例偏差和抗瘤监测gδT细胞的显著枯竭.
- 在晚期cSCC中观察到炎症性癌症相关纤维细胞 (iCAFs) 的丰富,促进免疫抑制和转移.
- 鉴定出CXCL8,TGFβ和IGFBP7的失调是与上皮-介质细胞过渡相关的极高风险cSCC的标志.
结论:
- 炎症性癌症相关纤维细胞 (iCAF) 和 γδT 细胞损失是cSCC攻击性的关键驱动因素.
- 对CXCL8/TGFβ/IGFBP7通路的失调是cSCC风险分层的潜在生物标志物框架.
- 这些发现提供了可操作的治疗目标和个性化cSCC管理的分子基础,特别是对于高风险患者.
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