T细胞空间调节B细胞受体信号在淋巴瘤通过H3K9me3修饰修饰
Lucy S Britto1, Deepali Balasubramani1, Sona Desai1
1Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA.
Advanced healthcare materials
|June 5, 2024
概括
激活的B细胞样扩散性大B细胞淋巴瘤 (ABC-DLBCL) 细胞通过瘤微环境信号逃避治疗. 向组质子修饰和微环境交叉声可能会改善高风险患者的治疗.
科学领域:
- 在瘤学瘤学.
- 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:
- 活性B细胞样扩散型大B细胞淋巴瘤 (ABC-DLBCL) 的生存结果不佳,向疗法有效性有限.
- 了解DLBCL细胞如何逃避治疗,需要先进的免疫能力模型.
- 淋巴瘤微环境 (Ly-TME) 在DLBCL进展和治疗耐药性方面发挥着关键作用.
研究的目的:
- 研究Ly-TME信号如何影响ABC-DLBCL细胞行为和治疗反应.
- 探索B细胞受体 (BCR) 信号传导和基因素修饰在治疗规避中的作用.
- 确定针对微环境相互作用的新型治疗策略.
主要方法:
- 使用合成基于水凝的淋巴瘤有机体作为免疫能力模型.
- 采用成像方式和扩展显微镜来分析细胞相互作用和染色质结构.
- 研究了抑制BCR通路和抑制G9α基因组甲基转移酶的影响.
主要成果:
- 在ABC-DLBCL细胞中,Ly-TME信号,特别是来自T细胞的信号,会改变BCR信号和H3K9me3 (在lysine 9处三甲基化3基因组).
- T细胞促进DNA甲基转移酶3A的表达和细胞骨的形成,由H3K9me3.3.调节.
- T细胞诱导更大,更多的H3K9me3,这表明更高阶的染色质重组有助于治疗耐药性.
- G9α抑制逆转了T细胞介导的H3K9me3调制,并恢复了对BCR途径抑制剂的治疗反应.
结论:
- 通过改变信号通路和染色体组织,Ly-TME显著影响DLBCL细胞命运和治疗反应.
- 异常信号传输和微环境交叉通话是ABC-DLBCL治疗逃避的关键机制.
- 针对这些微环境相互作用,可能与G9α抑制剂,为高风险DLBCL患者提供了一个有希望的策略.
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