METTL3驱动NAFLD相关的肝细胞癌,是促进免疫治疗的治疗标
Yasi Pan1, Huarong Chen2, Xiang Zhang1
1Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China.
Cell reports. Medicine
|August 16, 2023
概括
N6-甲基氨酸 (m6A) 甲基转移酶METTL3促进非酒精性脂肪肝疾病 (NAFLD) 相关的肝癌 (HCC). 用抗PD-1等疗法准METTL3可以克服免疫逃逸并治疗NAFLD-HCC.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 癌症生物学 癌症生物学
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 非酒精性脂肪性肝病 (NAFLD) 是肝癌 (肝细胞癌,HCC) 的一个日益增长的风险因素.
- 对于NAFLD-HCC的潜在机制和向治疗方法仍然不太了解.
- 在调节基因表达和细胞过程中,N6-甲基氨酸 (m6A) 修饰至关重要.
研究的目的:
- 研究m6A甲基转移酶METTL3在NAFLD-HCC的发展中的作用.
- 阐明METTL3影响NAFLD-HCC瘤微环境和免疫反应的分子机制.
- 评估针对METTL3的治疗潜力,与NAFLD-HCC的免疫治疗相结合.
主要方法:
- 使用肝细胞特异性Mettl3操纵 (敲击和敲击) 的小鼠模型来研究NAFLD-HCC的形成.
- 采用单细胞RNA测序来分析免疫细胞透和功能.
- 研究了涉及SCAP mRNA的m6A修改及其对胆固醇生物合成的影响的分子机制.
- 在临床前模型中测试了包括siRNA,小分子抑制剂 (STM2457) 和抗PD-1抗体在内的治疗策略.
主要成果:
- 肝细胞特异的Mettl3过度表达加剧了NAFLD-HCC,而淘汰赛抑制了它.
- 发现METTL3通过减少CD8+T细胞透 (GZMB+,IFN-γ+) 来抑制抗瘤免疫力.
- METTL3通过SCAP mRNA的m6A修饰来增强胆固醇生物合成,从而促进NAFLD-HCC,从而损害CD8+T细胞功能.
- 针对METTL3和PD-1的组合疗法协同增强了CD8+T细胞反应和中介瘤回归.
结论:
- METTL3通过调节瘤免疫微环境,是NAFLD-HCC进展的关键驱动因素.
- METTL3的机制涉及促进胆固醇生物合成,这会损害抗瘤CD8+T细胞的活性.
- 向METTL3,特别是与抗PD-1等免疫检查点抑制剂相结合,代表了NAFLD-HCC的有前途的治疗策略.
更多相关视频
08:19Transfer of Manipulated Tumor-associated Neutrophils into Tumor-Bearing Mice to Study their Angiogenic Potential In Vivo
Published on: July 20, 2019
6.0K
11:08Advances in Human Induced Pluripotent Stem Cell-Derived Chimeric Antigen Receptor-Expressing Natural Killer Cells
Published on: February 14, 2025
879
相关概念视频
Tumor Immunotherapy
557
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
557
Targeted Cancer Therapies
7.7K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.7K
