脂过氧化在巨细胞中通过抑制对ferroptotic细胞的 fagocytic能力,赋予瘤耐药性
Xiang Luo1, Hai-Biao Gong1, Zi-Chun Li1
1Guangdong Second Provincial General Hospital/Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility/Guangzhou Key Laboratory of Traditional Chinese Medicine & Disease Susceptibility/Guangdong-Hong Kong-Macao Universities Joint Laboratory for the Internationalization of Traditional Chinese Medicine/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE)/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research/State Key Laboratory of Bioactive Molecules and Druggability Assessment/Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, 510632, China.
与瘤相关的巨细胞中的脂过氧化损害了它们清除ferroptotic癌细胞的能力,导致治疗耐药性. 针对托尔类受体2 (TLR2) -MARCH6通路可以克服这种阻力.
科学领域:
- 癌症治疗 癌症治疗
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 铁化是一种有前途的癌症治疗方法,但缺乏细胞特异性,导致副作用.
- 巨细胞通过Toll-like受体2 (TLR2) 吞铁细胞,但铁细胞耐药性的机制尚不清楚.
研究的目的:
- 为了研究瘤微环境 (TME) 中的脂过氧化如何影响巨细胞对铁细胞的细胞化.
- 阐明巨细胞成为耐铁灭治疗的分子机制.
主要方法:
- 流量分类 流量分类
- 再氧化脂化剂的复制剂
- 对托尔类受体2 (TLR2) 贩运和降解的分析.
主要成果:
- 在TME巨细胞中的脂过氧化会损害ferroptotic瘤细胞的 fagocytosis,导致抵抗.
- 过氧化会通过破坏TLR2与CNPY3.3的相互作用而导致内细胞网膜 (ER) 保留TLR2.
- 在ER中保留的TLR2通过招募E3结合酶MARCH6.6.通过蛋白酶被降解.
- 1-steaoryl-2-15-HpETE-sn-glycero-3-phosphatidylethanolamine (SAPE-OOH) 调解了这些影响.这些影响中介于这些影响.
结论:
- 巨细胞脂过氧化诱导的对铁灭治疗的耐药性是由受损的TLR2贩运和随后的降解介导的.
- TLR2-MARCH6轴是一个潜在的治疗点,可以提高癌症治疗中的铁灭疗效.
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