双特异性T细胞参与者通过克隆替代和IL2驱动的CD8T细胞的效应因子分化来控制固体瘤
bioRxiv : the preprint server for biology
|January 23, 2026
概括
双特异性T细胞参与剂 (TCEs) 在固体瘤中表现出有限的疗效. 将TCE与INTERLEUKIN-2 (IL2) 疗法相结合,通过招募和激活CD8+ T细胞来增强抗瘤活性.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 生物技术是生物技术.
背景情况:
- 双特异性T细胞参与者 (TCE) 在固体瘤中面临挑战,原因是免疫抑制性瘤微环境和低抗原表达.
- 改善TCE敏感性和T细胞功能对于有效的癌症免疫疗法至关重要.
研究的目的:
- 设计针对低丰度抗原 (TRP2/Kb,DLL3) 的TCE,并评估它们在固体瘤中的有效性.
- 在体内研究克服TCE治疗失败的策略.
- 通过组合治疗阐明了增强抗瘤反应背后的机制.
主要方法:
- 对TRP2/Kb和DLL3抗原进行TCE的工程.
- 在体外评估T细胞激活.
- 在免疫能力强的小鼠体内瘤生长研究.
- 用TCE和一个CD25偏差的Interleukin-2 (IL2) 进行组合治疗.
- 多模式单细胞转录组和免疫谱的分析.
主要成果:
- 工程TCEs在体外显示T细胞激活对低丰度抗原.
- 在体内,TCE单一治疗显示出对瘤生长的有限控制.
- 与TCE和IL2联合治疗挽救了抗瘤活性.
- TCE-IL2疗法促进了瘤微环境中的CD8+T细胞的招募和激活.
结论:
- 固体瘤中的TCE疗效可能受到瘤微环境的限制.
- 与TCE和IL2的联合治疗增强了抗瘤反应.
- 经TCE介导的反应涉及CD8+T细胞的克隆替代,可通过细胞因子治疗来增强.
相关概念视频
T Cell Activation and Clonal Selection
14.8K
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...
14.8K
The Cell Cycle Control System
5.4K
The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and...
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and...
5.4K
The Cell Cycle Control System
14.0K
The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
14.0K
B Cell Activation and Differentiation
16.2K
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...
16.2K
iPS Cell Differentiation
3.1K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
3.1K
Structures of Solids
17.5K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
17.5K


