Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.
Department of Medicine, and.
JCI Insight. 2020 May 7;5(9):134939. doi: 10.1172/jci.insight.134939.
Protection from relapse after allogeneic hematopoietic cell transplantation (HCT) is partly due to donor T cell-mediated graft-versus-leukemia (GVL) immune responses. Relapse remains common in HCT recipients, but strategies to augment GVL could significantly improve outcomes after HCT. Donor T cells with αβ T cell receptors (TCRs) mediate GVL through recognition of minor histocompatibility antigens and alloantigens in HLA-matched and -mismatched HCT, respectively. αβ T cells specific for other leukemia-associated antigens, including nonpolymorphic antigens and neoantigens, may also deliver an antileukemic effect. γδ T cells may contribute to GVL, although their biology and specificity are less well understood. Vaccination or adoptive transfer of donor-derived T cells with natural or transgenic receptors are strategies with potential to selectively enhance αβ and γδ T cell GVL effects.
异基因造血细胞移植(HCT)后防止复发部分归因于供者 T 细胞介导的移植物抗白血病(GVL)免疫反应。尽管 HCT 受者仍普遍存在复发,但增强 GVL 的策略可显著改善 HCT 后的结果。具有 αβ T 细胞受体(TCR)的供者 T 细胞通过识别 HLA 匹配和不匹配 HCT 中的次要组织相容性抗原和同种抗原来介导 GVL。针对其他白血病相关抗原(包括非多态性抗原和新抗原)的特异性 αβ T 细胞也可能具有抗白血病作用。γδ T 细胞可能有助于 GVL,尽管其生物学和特异性了解较少。用天然或转基因受体对供者来源的 T 细胞进行疫苗接种或过继转移是具有选择性增强 αβ 和 γδ T 细胞 GVL 作用潜力的策略。