组织特异性重编程导致血管性中性粒细胞专业化和结直肠癌中的瘤血管化
Triet M Bui1, Lenore K Yalom1, Edward Ning1
1Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
The Journal of clinical investigation
|February 8, 2024
概括
与瘤相关的中性粒细胞 (TAN) 通过调节血管生长来促进结直肠癌 (CRC) 的血管化. 抑制TAN或MMP14有效地减少了瘤生长,这表明了CRC的新治疗策略.
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:
- 中性粒细胞 (PMN) 积累是性结肠炎 (UC) 和结直肠癌 (CRC) 的特征.
- 了解从炎症到癌症的进展过程中的PMN功能变化至关重要.
研究的目的:
- 研究PMN在从炎性转变为CRC的过程中的表型和功能多样化.
- 确定瘤微环境中参与PMN功能的特定途径和分子.
主要方法:
- 来自患者和小鼠模型的血液和组织PMN的转录组分析.
- 在 silico 路径分析,蛋白质网络映射和基因本体学评分.
- 外体功能研究,包括小鼠CRC和患者衍生异种移植模型.
- 对TCGA数据集和临床标本的分析.
主要成果:
- 转录分析根据位置 (血液,炎症结肠,瘤) 分离PMN.
- 与瘤相关的中性粒细胞 (TAN) 显示在血管和血管发育途径中的丰富.
- TANs,特别是通过Spp1 (OPN) 和Mmp14 (MT1-MMP),极大地促进了瘤血管和内皮细胞功能.
- 药理上抑制TAN贩运或MMP14降低了瘤血管密度,并导致CRC回归.
结论:
- PMN经历了利基导向的功能专业化,TAN在瘤血管化中发挥着关键作用.
- 在CRC中,SPP1和MMP14被确定为TAN功能的关键调节者.
- 准TAN血管性质为结直肠癌提供了潜在的治疗策略.
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