Memory T cells: A helpful guard for allogeneic hematopoietic stem cell transplantation without causing graft-versus-host disease.
Graft-versus-host disease (GVHD) is a major complication of allogeneic hematopoietic stem cell transplantation (AHSCT) and the major cause of nonrelapse morbidity and mortality of AHSCT. In AHSCT, donor T cells facilitate hematopoietic stem cell (HSC) engraftment, contribute to anti-infection immunity, and mediate graft-versus-leukemia (GVL) responses. However, activated alloreactive T cells also attack recipient cells in vital organs, leading to GVHD. Different T-cell subsets, including naïve T (TN) cells, memory T (TM) cells, and regulatory T (Treg) cells mediate different forms of GVHD and GVL; TN cells mediate severe GVHD, whereas TM cells do not cause GVHD, but preserve T-cell function including GVL. In addition, metabolic reprogramming controls T-cell differentiation and activation in these disease states. This minireview focuses on the role and the related mechanisms of TM cells in AHSCT, and the potential manipulation of T cells in AHSCT.
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Related Subject Headings
- Transplantation Immunology
- T-Lymphocyte Subsets
- Immunologic Memory
- Humans
- Hematopoietic Stem Cell Transplantation
- Graft vs Leukemia Effect
- Graft vs Host Disease
- Graft Survival
- Allografts
Citation
Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Transplantation Immunology
- T-Lymphocyte Subsets
- Immunologic Memory
- Humans
- Hematopoietic Stem Cell Transplantation
- Graft vs Leukemia Effect
- Graft vs Host Disease
- Graft Survival
- Allografts