Allogeneic CD33-directed CAR-NKT cells for the treatment of bone marrow-resident myeloid malignancies

Abstract Chimeric antigen receptor (CAR)-engineered T cell therapy holds promise for treating myeloid malignancies, but challenges remain in bone marrow (BM) infiltration and targeting BM-resident malignant cells. Current autologous CAR-T therapies also face manufacturing and patient selection issue...

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Main Authors: Yan-Ruide Li, Ying Fang, Siyue Niu, Yichen Zhu, Yuning Chen, Zibai Lyu, Enbo Zhu, Yanxin Tian, Jie Huang, Valerie Rezek, Scott Kitchen, Tzung Hsiai, Jin J. Zhou, Pin Wang, Wanxing Chai-Ho, Sunmin Park, Christopher S. Seet, Caspian Oliai, Lili Yang
Format: Article
Language:English
Published: Nature Portfolio 2025-02-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-025-56270-6
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author Yan-Ruide Li
Ying Fang
Siyue Niu
Yichen Zhu
Yuning Chen
Zibai Lyu
Enbo Zhu
Yanxin Tian
Jie Huang
Valerie Rezek
Scott Kitchen
Tzung Hsiai
Jin J. Zhou
Pin Wang
Wanxing Chai-Ho
Sunmin Park
Christopher S. Seet
Caspian Oliai
Lili Yang
author_facet Yan-Ruide Li
Ying Fang
Siyue Niu
Yichen Zhu
Yuning Chen
Zibai Lyu
Enbo Zhu
Yanxin Tian
Jie Huang
Valerie Rezek
Scott Kitchen
Tzung Hsiai
Jin J. Zhou
Pin Wang
Wanxing Chai-Ho
Sunmin Park
Christopher S. Seet
Caspian Oliai
Lili Yang
author_sort Yan-Ruide Li
collection DOAJ
description Abstract Chimeric antigen receptor (CAR)-engineered T cell therapy holds promise for treating myeloid malignancies, but challenges remain in bone marrow (BM) infiltration and targeting BM-resident malignant cells. Current autologous CAR-T therapies also face manufacturing and patient selection issues, underscoring the need for off-the-shelf products. In this study, we characterize primary patient samples and identify a unique therapeutic opportunity for CAR-engineered invariant natural killer T (CAR-NKT) cells. Using stem cell gene engineering and a clinically guided culture method, we generate allogeneic CD33-directed CAR-NKT cells with high yield, purity, and robustness. In preclinical mouse models, CAR-NKT cells exhibit strong BM homing and effectively target BM-resident malignant blast cells, including CD33-low/negative leukemia stem and progenitor cells. Furthermore, CAR-NKT cells synergize with hypomethylating agents, enhancing tumor-killing efficacy. These cells also show minimal off-tumor toxicity, reduced graft-versus-host disease and cytokine release syndrome risks, and resistance to allorejection, highlighting their substantial therapeutic potential for treating myeloid malignancies.
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spelling doaj-art-20e57e83f91a49ceb053602812fe87bc2025-02-02T12:31:57ZengNature PortfolioNature Communications2041-17232025-02-0116112810.1038/s41467-025-56270-6Allogeneic CD33-directed CAR-NKT cells for the treatment of bone marrow-resident myeloid malignanciesYan-Ruide Li0Ying Fang1Siyue Niu2Yichen Zhu3Yuning Chen4Zibai Lyu5Enbo Zhu6Yanxin Tian7Jie Huang8Valerie Rezek9Scott Kitchen10Tzung Hsiai11Jin J. Zhou12Pin Wang13Wanxing Chai-Ho14Sunmin Park15Christopher S. Seet16Caspian Oliai17Lili Yang18Department of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaDivision of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of CaliforniaDivision of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of CaliforniaDivision of Cardiology, Department of Medicine, David Geffen School of Medicine, University of CaliforniaDepartment of Biostatistics, Fielding School of Public Health, University of CaliforniaDepartment of Chemical Engineering and Materials Science, University of Southern CaliforniaDivision of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of CaliforniaDivision of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of CaliforniaDivision of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of CaliforniaDivision of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of CaliforniaDepartment of Microbiology, Immunology & Molecular Genetics, University of CaliforniaAbstract Chimeric antigen receptor (CAR)-engineered T cell therapy holds promise for treating myeloid malignancies, but challenges remain in bone marrow (BM) infiltration and targeting BM-resident malignant cells. Current autologous CAR-T therapies also face manufacturing and patient selection issues, underscoring the need for off-the-shelf products. In this study, we characterize primary patient samples and identify a unique therapeutic opportunity for CAR-engineered invariant natural killer T (CAR-NKT) cells. Using stem cell gene engineering and a clinically guided culture method, we generate allogeneic CD33-directed CAR-NKT cells with high yield, purity, and robustness. In preclinical mouse models, CAR-NKT cells exhibit strong BM homing and effectively target BM-resident malignant blast cells, including CD33-low/negative leukemia stem and progenitor cells. Furthermore, CAR-NKT cells synergize with hypomethylating agents, enhancing tumor-killing efficacy. These cells also show minimal off-tumor toxicity, reduced graft-versus-host disease and cytokine release syndrome risks, and resistance to allorejection, highlighting their substantial therapeutic potential for treating myeloid malignancies.https://doi.org/10.1038/s41467-025-56270-6
spellingShingle Yan-Ruide Li
Ying Fang
Siyue Niu
Yichen Zhu
Yuning Chen
Zibai Lyu
Enbo Zhu
Yanxin Tian
Jie Huang
Valerie Rezek
Scott Kitchen
Tzung Hsiai
Jin J. Zhou
Pin Wang
Wanxing Chai-Ho
Sunmin Park
Christopher S. Seet
Caspian Oliai
Lili Yang
Allogeneic CD33-directed CAR-NKT cells for the treatment of bone marrow-resident myeloid malignancies
Nature Communications
title Allogeneic CD33-directed CAR-NKT cells for the treatment of bone marrow-resident myeloid malignancies
title_full Allogeneic CD33-directed CAR-NKT cells for the treatment of bone marrow-resident myeloid malignancies
title_fullStr Allogeneic CD33-directed CAR-NKT cells for the treatment of bone marrow-resident myeloid malignancies
title_full_unstemmed Allogeneic CD33-directed CAR-NKT cells for the treatment of bone marrow-resident myeloid malignancies
title_short Allogeneic CD33-directed CAR-NKT cells for the treatment of bone marrow-resident myeloid malignancies
title_sort allogeneic cd33 directed car nkt cells for the treatment of bone marrow resident myeloid malignancies
url https://doi.org/10.1038/s41467-025-56270-6
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