Human iPSC-derived CD4+ Treg-like cells engineered with chimeric antigen receptors control GvHD in a xenograft model

IF 19.8 1区 医学 Q1 CELL & TISSUE ENGINEERING Cell stem cell Pub Date : 2024-06-06 DOI:10.1016/j.stem.2024.05.004
Hisashi Yano, Keiko Koga, Takayuki Sato, Tokuyuki Shinohara, Shoichi Iriguchi, Atsushi Matsuda, Kazuki Nakazono, Maki Shioiri, Yasuyuki Miyake, Yoshiaki Kassai, Hitoshi Kiyoi, Shin Kaneko
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Abstract

CD4+ T cells induced from human iPSCs (iCD4+ T cells) offer a therapeutic opportunity for overcoming immune pathologies arising from hematopoietic stem cell transplantation. However, most iCD4+ T cells are conventional helper T cells, which secrete inflammatory cytokines. We induced high-level expression of FOXP3, a master transcription factor of regulatory T cells, in iCD4+ T cells. Human iPSC-derived, FOXP3-induced CD4+ T (iCD4+ Treg-like) cells did not secrete inflammatory cytokines upon activation. Moreover, they showed demethylation of the Treg-specific demethylation region, suggesting successful conversion to immunosuppressive iCD4+ Treg-like cells. We further assessed these iCD4+ Treg-like cells for CAR-mediated immunosuppressive ability. HLA-A2 CAR-transduced iCD4+ Treg-like cells inhibited CD8+ cytotoxic T cell (CTL) division in a mixed lymphocyte reaction assay with A2+ allogeneic CTLs and suppressed xenogeneic graft-versus-host disease (GVHD) in NSG mice treated with A2+ human PBMCs. In most cases, these cells suppressed the xenogeneic GvHD progression as much as natural CD25+CD127 Tregs did.

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用嵌合抗原受体设计的人 iPSC 衍生 CD4+ Treg 样细胞在异种移植模型中控制 GvHD
由人类iPSC诱导的CD4+ T细胞(iCD4+ T细胞)为克服造血干细胞移植引起的免疫病症提供了治疗机会。然而,大多数 iCD4+ T 细胞是传统的辅助性 T 细胞,会分泌炎性细胞因子。我们诱导 iCD4+ T 细胞高水平表达调节性 T 细胞的主转录因子 FOXP3。由 FOXP3 诱导的人类 iPSC 衍生的 CD4+ T(iCD4+ Treg-like)细胞在激活后不会分泌炎性细胞因子。此外,它们显示出 Treg 特异性去甲基化区域的去甲基化,这表明它们成功地转化为免疫抑制性 iCD4+ Treg 样细胞。我们进一步评估了这些 iCD4+ Treg 样细胞的 CAR 介导的免疫抑制能力。HLA-A2 CAR转化的iCD4+ Treg样细胞在与A2+异体CTLs的混合淋巴细胞反应试验中抑制了CD8+细胞毒性T细胞(CTL)分裂,并抑制了用A2+人类PBMCs治疗的NSG小鼠的异种移植物抗宿主病(GVHD)。在大多数情况下,这些细胞对异种移植物抗宿主疾病进展的抑制作用不亚于天然 CD25+CD127- Tregs。
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来源期刊
Cell stem cell
Cell stem cell 生物-细胞生物学
CiteScore
37.10
自引率
2.50%
发文量
151
审稿时长
42 days
期刊介绍: Cell Stem Cell is a comprehensive journal covering the entire spectrum of stem cell biology. It encompasses various topics, including embryonic stem cells, pluripotency, germline stem cells, tissue-specific stem cells, differentiation, epigenetics, genomics, cancer stem cells, stem cell niches, disease models, nuclear transfer technology, bioengineering, drug discovery, in vivo imaging, therapeutic applications, regenerative medicine, clinical insights, research policies, ethical considerations, and technical innovations. The journal welcomes studies from any model system providing insights into stem cell biology, with a focus on human stem cells. It publishes research reports of significant importance, along with review and analysis articles covering diverse aspects of stem cell research.
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