携带铁的与癌症相关的纤维细胞在前列腺癌中诱导免疫抑制
Kai Zhang1, Kaiyuan Liu1, Benxia Hu2
1State Key Laboratory of Systems Medicine for Cancer, Renji-Med-X Stem Cell Research Center, and Department of Urology, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Nature communications
|October 19, 2024
概括
载有铁的癌细胞,FerroCAFs,通过抑制前列腺癌的免疫力来促进瘤生长. 准它们的铁信号通路可以增强抗瘤反应并抑制瘤.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 铁对人类健康至关重要.
- 癌症相关纤维细胞 (CAFs) 在瘤进展中发挥作用.
- 瘤微环境中的免疫抑制阻碍了抗瘤免疫力.
研究的目的:
- 识别和表征一种涉及前列腺癌免疫抑制的铁载CAFs (FerroCAFs) 的新型子集.
- 阐明FerroCAFs诱导免疫抑制的机制.
- 探索针对FerroCAF用于癌症治疗的治疗策略.
主要方法:
- 在小鼠和人类癌症模型中识别和描述FerroCAFs.
- 对分泌的蛋白质及其在髓状细胞招募中的作用的分析.
- 研究涉及血氧酶1 (Hmox1),铁积累和Kdm6b激活的分子途径.
- 针对Hmox1/铁/Kdm6b轴的治疗干预措施的评估.
主要成果:
- 在前列腺癌,肺癌和卵巢癌中确定了一组含铁的CAF,称为FerroCAF.
- 铁CAFs分泌骨髓细胞相关蛋白质 (CCL2,CSF1,CXCL1) 来招募免疫抑制性骨髓细胞.
- 铁CAF中的铁积累是由Hmox1介导的,激活Kdm6b用于表观遗传重编程和基因转录.
- 在FerroCAF中准Hmox1/铁/Kdm6b通路促进了抗瘤免疫力和瘤抑制.
结论:
- 铁CAFs通过一种依赖铁的表观遗传机制,代表了癌症免疫抑制的关键驱动因素.
- 脊髓灰质炎病毒受体作为FerroCAFs的保存细胞表面标记物.
- 抑制Hmox1/铁/Kdm6b信号轴为增强抗瘤免疫力和抑制癌症进展提供了一个有希望的治疗策略.
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