LKB1积极调节树突细胞诱导的T细胞免疫力,并抑制瘤的发展
Wenjie Zhang1, Shan Liu, Lin Zhao
1Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Sciences, Anhui Normal University, Wuhu, China 241000.
Iranian journal of immunology : IJI
|May 29, 2023
概括
肝激酶B1 (LKB1) 影响树突细胞 (DC) 的新陈代谢和功能. LKB1抑制了调控性T细胞的发育,增强了T细胞免疫力,抑制了瘤的生长.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞代谢 细胞代谢
- 癌症研究 癌症研究
背景情况:
- 树突细胞 (DC) 功能是由细胞内代谢调节的,肝激酶B1 (LKB1) 起着关键作用.
- 由于DC隔离的挑战,LKB1在DC成熟和瘤微环境中的功能中的特定作用仍然在很大程度上未被描述.
研究的目的:
- 阐明LKB1在DC中的功能,重点关注抗原呈现,T细胞激活,分化和瘤根除.
- 研究LKB1调节对T细胞反应和B16黑色素瘤转移的影响.
主要方法:
- 在DC中使用lentiviral转导对Lkb1进行基因修饰.
- 通过流式细胞计和qPCR评估T细胞的增殖,分化和活性.
- 肺瘤结节的量化计数用于评估B16黑色素瘤转移.
主要成果:
- LKB1没有影响DC抗原的吸收或呈现,但促进了T细胞的增殖.
- 调节LKB1调节的调节性T细胞 (Treg) 种群,与淘汰增加和过度表达减少Tregs.
- LKB1抑制了OX40L和CD86的表达,随后减少了Treg的增殖,并降低了IL-10的产生.
- 在DC中LKB1的有限表达通过降低大酶B和穿孔素来降低CD8+T细胞细胞毒性,促进瘤生长.
结论:
- LKB1在增强DC介导的T细胞免疫力方面发挥着至关重要的作用.
- 通过抑制Treg发育,LKB1有助于抑制瘤生长.
- 在DC中准LKB1是癌症免疫治疗的潜在策略.
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