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通过BET抑制在免疫抑制性瘤相关巨细胞中准CLEC4E

Mengting Liao^1,2,3, Kexin Long^1,2, Liang Dong^1,2

¹Department of Dermatology, Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China.

Clinical and translational medicine

|October 15, 2025

概括

以NHWD-870等BET抑制剂准免疫抑制性瘤相关巨细胞的C型莱克域家族4成员E (CLEC4E) 可以增强抗瘤免疫力. 这种方法重编程TAM以改善T细胞细胞毒性并抑制瘤生长.

科学领域:

免疫学免疫学免疫学
癌症生物学癌症生物学
药理学药理学是指药理学的学科.

背景情况:

免疫抑制性瘤相关巨细胞 (TAMs) 是癌症免疫疗法的关键标,但目前的疗法有效性有限.
C型莱克域家族4成员E (CLEC4E),是一种富含TAM的促炎分子,呈现出一种新的治疗点.
了解CLEC4E的作用和开发调节它的药物对于改善癌症治疗至关重要.

研究的目的:

研究CLEC4E在TAM中的作用及其对瘤进展的影响.
确定针对CLEC4E的治疗剂,并阐明它们的作用机制.
为了澄清和外部域 (BET) 抑制剂NHWD-870是如何降低CLEC4E的.

主要方法:

对CLEC4E表达与患者存活率的相关性分析.
在体内瘤模型 (黑色素瘤,卵巢癌) 中生成Clec4e淘汰赛小鼠.
单细胞RNA测序,RT-PCR,流细胞测量,蛋白质组测序,药物查,RNA沉默,ChIP-seq和光酶测试.

主要成果:

高CLEC4E+ TAM透与黑色素瘤患者的预后不佳相关.
CLEC4E淘汰赛抑制了瘤生长,减少了TAM增殖,并增强了T细胞的抗瘤功能.
NHWD-870破坏了BRD4-CEBPβ相互作用,降低了CLEC4E表达的调节.

结论:

通过促进自身的增殖和阻碍T细胞活动,CLEC4E+ TAMs创造了一个免疫抑制的瘤微环境.
用BET抑制剂向BRD4/CEBPβ/CLEC4E轴提供了一种有希望的策略,用于重编程TAM并增强抗瘤免疫力.

关键词:

这是一种BET抑制剂.这就是 CLEC4E.有条件的淘汰赛小鼠.一个单细胞RNA测序.与瘤相关的巨细胞.

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