T细胞分化阶段阻断偏差在T细胞淋巴细胞淋巴瘤中赋予了高甲基化和中原偏好
Jiali Wang1, Bo Qian2, Xiaowen Yu3
1Department of Hematology and Oncology, Children's Hospital of Nanjing Medical University, Nanjing, China.
Clinical and translational medicine
|June 28, 2025
概括
这项研究揭示了T细胞急性淋巴细胞白血病 (T-LBL) 和T细胞急性淋巴细胞白血病 (T-ALL) 是同一疾病的不同阶段,T-LBL细胞在DN和DP阶段被阻止. 脱甲基化疗法通过准UHRF1-介导的高甲基化,有效地抑制T-LBL的扩散.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 目前的临床指南将T细胞淋巴细胞淋巴瘤 (T-LBL) 和T型急性淋巴细胞白血病 (T-ALL) 组合在一起.
- 这种分类忽视了它们独特的临床,遗传和致病特征,需要重新评估它们的差异.
研究的目的:
- 调查T-LBL和T-ALL背后的独特生物机制.
- 根据其独特的细胞分化块来确定T-LBL的治疗点.
主要方法:
- 通过流细胞计和体突变数据建立了NCH-TALL-LBL队列.
- 在T-LBL样本上进行单细胞RNA测序和T细胞受体测序.
- 来自T-ALL和T-LBL的综合多omics数据 (scRNA-seq,表达阵列,流细胞计)
主要成果:
- 在T-LBL中的恶性T细胞主要表现出DN和DP阶段的分化阻断,DP细胞占主导地位.
- 这种分化阻断促进了免疫抑制性瘤微环境 (TME) 和中瘤局部化.
- 转录因子E2F2调节UHRF1,导致瘤抑制基因的高甲基化,这种机制是体外和体内脱甲基治疗有效向的.
结论:
- T-LBL和T-ALL代表了单一疾病的不同阶段,其特征是明显的T细胞分化阻塞.
- 在T-LBL中,DN/DP阶段块驱动其独特的TME和器官热带.
- 用去甲基化剂向UHRF1介导的高甲基化,对T-LBL治疗有希望.
相关概念视频
T Cell Activation and Clonal Selection
5.6K
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
5.6K
Abnormal Proliferation
4.6K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.6K
T Cell Types and Functions
1.4K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
1.4K
B Cell Activation and Differentiation
6.6K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
6.6K


