乳腺癌分泌的因素通过系统信号来促进肺转移,以诱导纤维化前期转移的利基
Noam Cohen1, Dhanashree Mundhe1, Sarah K Deasy1
1Department of Pathology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Cancer research
|August 7, 2023
概括
乳腺癌细胞分泌Activin A (ActA),通过改变肺微环境,促进肺纤维化和转移. 向ActA可能会抑制转移性进展,并改善乳腺癌患者的存活率.
科学领域:
- 在瘤学瘤学.
- 癌症转移 癌症转移
- 瘤微环境 瘤微环境
背景情况:
- 转移性癌症是癌症相关死亡的主要原因,转移性微环境在疾病进展中发挥着关键作用.
- 与癌症相关的纤维细胞 (CAFs) 通过诱导炎症和改变细胞外基质 (ECM) 来促进前转移性的形成.
- 了解转移利基的早期变化对于开发抑制转移的策略至关重要.
研究的目的:
- 研究Activin A (ActA) 在乳腺癌转移期间调解肺前转移性利基的系统性变化中的作用.
- 确定ActA信号在肺转移中的功能意义及其与患者存活率的关联.
主要方法:
- 使用自发乳腺癌肺转移的小鼠模型.
- 评估了肺前转移利基的纤维变化和纤维细胞重新连接.
- 在初级瘤和血液中测量了Activin A (ActA) 水平.
- 研究了ActA对肺纤维细胞和原沉积的影响.
- 在乳腺癌细胞中基因向的ActA,以评估其对转移和生存的影响.
- 与乳腺癌患者的临床数据相关的ActA水平.
主要成果:
- 在肺前转移的利基中观察到纤维变化和纤维细胞变化,这表明主要瘤对系统有影响.
- 乳腺瘤分泌Activin A (ActA),导致瘤携带小鼠的血液水平升高.
- ActA在肺纤维细胞中调节了益菌性因子,增加了在转移前利基的原沉积.
- 在乳腺癌细胞中对ActA的遗传向显著减少了肺转移,并改善了小鼠模型中的生存率.
- 人类乳腺癌患者的高ActA水平与肺转移性复发和较差的存活率相关.
结论:
- 乳腺癌细胞分泌的Activin A (ActA) 驱动肺微环境的系统性变化,促进纤维化并促进肺转移.
- ActA调解癌细胞和与癌症相关的纤维细胞之间的交叉对话,增强转移性利基.
- ActA 是一种潜在的治疗点,可以抑制乳腺癌转移性复发并改善患者的治疗结果.
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