骨髓髓髓髓-淋巴原始细胞通过细胞融合扩大瘤的淋巴血管
Shaswati Athaiya1, Lisa Volk-Draper1, Emma Cox1
1Department of Medical Microbiology, Immunology, and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL 62794, USA.
骨髓原始细胞与淋巴细胞融合,驱动瘤淋巴细胞的形成和转移. 这种依赖于Th2和TLR4通路的细胞融合过程,为抑制癌症扩散提供了新的治疗点.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 癌症转移 癌症转移
背景情况:
- 骨髓 (BM) 衍生的髓淋巴细胞内皮细胞原始体 (M-LECPs) 促进瘤淋巴血管的形成,促进转移.
- 细胞融合是已知的BM祖先机制,用于血统再生,这表明M-LECP与淋巴内皮细胞 (LECs) 相互作用的类似作用.
研究的目的:
- 调查M-LECP是否利用细胞融合诱导LECs的扩散,从而促进瘤淋巴细胞的生长.
- 在体外和体外瘤模型中,以确定融合原标记的表达和M-LECP与LEC融合的程度.
主要方法:
- 在体外培养的M-LECP和在人/小鼠瘤中招募的M-LECP中评估化标记表达.
- 量化了M-LECP与LECs在体外和体内在乳腺瘤的雌性喜梅拉小鼠中使用Y染色体染色的量化M-LECP融合.
- 分析了融合与线粒分裂,血管形成和转移的关联,并调查了Th2和Toll-like受体-4 (TLR4) 途径的作用.
主要成果:
- 在体外和瘤中招募的M-LECP对LECs表现出显著的融合性活性.
- 在近一半的瘤淋巴体中发现了Y染色体 (表明融合),与线粒分裂,血管形成和转移相关.
- 细胞融合依赖于Th2和TLR4信号通路.
结论:
- 通过一种与LECs的新型细胞融合机制,M-LECP促进瘤淋巴细胞的形成.
- 这种融合过程刺激LEC分裂,血管形成,并有助于转移性传播.
- 针对这种M-LECP-LEC融合是抑制癌症转移的一个有希望的策略.
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