关于在血造细胞移植后塑造CMV特异性T细胞多功能性的因素的新见解
Alicja Sadowska-Klasa1,2, Fang Yun Lim1, Hu Xie1
1Fred Hutchinson Cancer Center, Seattle, Washington, USA.
American journal of hematology
|December 1, 2025
概括
优化免疫抑制时间和剂量是血液细胞移植 (HCT) 后控制细胞巨乳病毒 (CMV) 感染的关键. 特定的药物调整可以增强CMV特异性T细胞反应,这对抗病毒免疫至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 移植医学 移植医学
- 病毒学 病毒学
背景情况:
- 多功能T细胞在异性造血细胞移植 (HCT) 后对控制细胞巨乳病毒 (CMV) 至关重要.
- 管理耐火性CMV和优化病毒特异性细胞疗法 (VST) 仍然是HCT接受者的挑战.
研究的目的:
- 为了比较分析免疫抑制剂的时间和剂量如何影响HCT患者的CMV特异性T细胞多功能性.
- 确定特定的免疫抑制药物疗法,这些疗法可能会损害或保留T细胞对CMV的反应.
主要方法:
- 在HCT后100天内,在243名HCT接受者中进行了pp65刺激后,评估了CD4+和CD8+T细胞反应 (IFN-γ加上≥1个功能标志物).
- 对比了移植后的环胺 (PT-Cy),皮质类固醇,菌酸 (MMF) 和氨酸抑制剂 (CNI) 对T细胞多功能性的影响.
- 分析了莱特莫病毒前和后两个时期的反应.
主要成果:
- 移植后的循环胺 (PT-Cy) 并没有显著损害T细胞功能.
- 环素与高多功能T细胞频率比塔克罗利斯相关,无论度如何.
- 介于高剂量的皮质类固醇,特别是在测试前2至4周内服用时,抑制了T细胞反应,尽管快速逐渐减轻了这种影响.
- 长时间服用甲酸莫菲蒂尔 (MMF) 降低了T细胞多功能性.
结论:
- 皮质类固醇和MMF等免疫抑制剂的时间和剂量显著影响CMV特异性T细胞多功能性后HCT.
- 环素可能比塔克罗利斯更好,以保持T细胞反应.
- 调整免疫抑制策略,考虑到特定的药物时间和剂量,可以改善HCT接受者的CMV管理和VST疗效.
更多相关视频
08:52Generation of Multivirus-specific T Cells to Prevent/treat Viral Infections after Allogeneic Hematopoietic Stem Cell Transplant
Published on: May 27, 2011
17.7K
10:24Automated Cell Enrichment of Cytomegalovirus-specific T cells for Clinical Applications using the Cytokine-capture System
Published on: October 5, 2015
12.8K
相关概念视频
T Cell Activation and Clonal Selection
14.6K
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...
14.6K
Cell-mediated Immune Responses
83.3K
Overview
83.3K
Regulation of Hematopoietic Stem Cells
3.9K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.9K
Tissue Transplantation
870
Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
870
