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Updated: Jun 24, 2025
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Flow Cytometry-based Assay for the Monitoring of NK Cell Functions
Published on: October 30, 2016
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DOT1L维持NK细胞表型和功能,以实现最佳的瘤控制.
Harrison Sudholz1, Iona S Schuster2, Momeneh Foroutan3
1Immunity Program, Biomedicine Discovery Institute and Department of Biochemistry, Monash University, Clayton, VIC 3800, Australia.
Cell reports
|June 12, 2024
概括
组织素甲基转移酶DOT1L阻止自然杀手 (NK) 细胞转化为与瘤控制不良相关的子集. 丢失DOT1L会损害NK细胞功能和固体瘤的控制.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 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:
- 基因组甲基转移酶 (HMTs) 调节基因表达,但它们在瘤微环境 (TME) 内的自然杀手 (NK) 细胞生物学中的作用尚不清楚.
- NK细胞对抗瘤免疫力至关重要,它们的功能可以通过TME调节.
研究的目的:
- 研究HMT DOT1L在TME内的NK细胞生物学中的作用.
- 确定DOT1L是否影响NK细胞转化为其他免疫细胞子集.
主要方法:
- 在NKp46表达细胞中Dot1l的遗传删除.
- 分析NK细胞表型和转录特征.
- 在固体瘤的背景下评估NK细胞功能.
主要成果:
- DOT1L限制了NK细胞转化为CD49a+ CD49b+ intILC1s,这是一种与瘤控制受损相关的子集.
- 丢失DOT1L会导致NK细胞偏向intILC1表型,即使没有TGF-β刺激.
- 缺少DOT1L的NK细胞表现出类似于intILC1s和ILC1s的转录特征,导致反应改变和减少固体瘤控制.
结论:
- DOT1L对于维持TME内的NK细胞身份和功能至关重要.
- 向DOT1L可能提供一种策略,以防止在癌症免疫治疗中有害的NK细胞转化.
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