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<p>Invariant natural killer T (iNKT) cells are a unique subset of T lymphocytes with allogeneic potential and strong solid tumour-homing capacity, making them attractive for cancer immunotherapy. Unlike conventional T cells, iNKT cells recognize lipid antigens presented by the non-polymorphic CD1d molecule. Chimaeric antigen receptor (CAR)-redirected iNKT (CAR-iNKT) cells have shown promise; however, their clinical efficacy is limited by insufficient activation and poor long-term persistence within the tumour microenvironment. Here we describe the iNKT cell-targeted microparticle recruitment and activation system (iMRAS), a biomimetic platform engineered to locally recruit, activate and expand CAR-iNKT cells in vivo. Acting as an in vivo ‘charging station’, iMRAS provides chemotactic and activating cues that enhance CAR-iNKT cell functionality, improving persistence and tumour control in preclinical lymphoma and melanoma models. Through its biomimetic design and localized immunostimulatory effects, iMRAS helps overcome the limitations of current therapies for solid tumours, establishing a robust platform for advancing CAR-iNKT cell-based cancer immunotherapy.</p>

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Engineering an in vivo charging station for CAR-redirected invariant natural killer T cells to enhance cancer therapy

  • 期刊论文

  • 发表日期：

    2026年3月17日

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  • Yan-Ruide Li,
  • Haochen Nan,
  • Zeyang Liu,
  • Ying Fang,
  • Yichen Zhu,
  • Zibai Lyu,
  • Zhengyao Shao,
  • Enbo Zhu,
  • Bo Zhang,
  • Youcheng Yang,
  • Xinyuan Shen,
  • Yuning Chen,
  • Tzung Hsiai,
  • Lili Yang,
  • Song Li

摘要

Invariant natural killer T (iNKT) cells are a unique subset of T lymphocytes with allogeneic potential and strong solid tumour-homing capacity, making them attractive for cancer immunotherapy. Unlike conventional T cells, iNKT cells recognize lipid antigens presented by the non-polymorphic CD1d molecule. Chimaeric antigen receptor (CAR)-redirected iNKT (CAR-iNKT) cells have shown promise; however, their clinical efficacy is limited by insufficient activation and poor long-term persistence within the tumour microenvironment. Here we describe the iNKT cell-targeted microparticle recruitment and activation system (iMRAS), a biomimetic platform engineered to locally recruit, activate and expand CAR-iNKT cells in vivo. Acting as an in vivo ‘charging station’, iMRAS provides chemotactic and activating cues that enhance CAR-iNKT cell functionality, improving persistence and tumour control in preclinical lymphoma and melanoma models. Through its biomimetic design and localized immunostimulatory effects, iMRAS helps overcome the limitations of current therapies for solid tumours, establishing a robust platform for advancing CAR-iNKT cell-based cancer immunotherapy.