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REVIEW

The Therapeutic Potential of CAR γδ T Cells: From Cancer to Autoimmune Disease

Chanu Lee, Suhyun Che, Jea-Hyun Baek*
School of Life Science, Handong Global University, Pohang, 37554, Gyeongbuk, Republic of Korea
* Corresponding Author: Jea-Hyun Baek. Email: email
(This article belongs to the Special Issue: The Role of γδ T Cells and iNKT Cells in Cancer: Unraveling Molecular Mechanisms and Therapeutic Potential)

BIOCELL https://doi.org/10.32604/biocell.2025.073551

Received 20 September 2025; Accepted 12 November 2025; Published online 05 December 2025

Abstract

The paradigm of cancer treatment has been reshaped by chimeric antigen receptor (CAR) αβ T cell therapy, yet its full potential remains constrained by fundamental limitations. While conventional CAR αβ T cells have achieved notable success in hematological malignancies, their broader application is hindered by the high cost and delays of autologous manufacturing, as well as the critical risk of graft-vs-host disease (GvHD). In addition, their efficacy against solid tumors is often compromised by the immunosuppressive tumor microenvironment (TME). As a promising solution, γδ T cells are being developed as an alternative CAR platform. Their intrinsic ability to recognize transformed cells in a major histocompatibility complex (MHC)-independent manner minimizes the risk of GvHD and supports the creation of safe, effective allogeneic therapies. Building on this unique biology, the therapeutic efficacy of CAR γδ T cells is being enhanced through advanced engineering strategies. Key innovations include “armoring” technologies, such as cytokine secretion, checkpoint blockade, and metabolic rewiring, to overcome local immunosuppression and improve persistence, as well as the use of induced pluripotent stem cells (iPSCs) to generate standardized products from a renewable and consistent source. This expanding technological toolbox is also enabling novel applications beyond oncology. For example, chimeric autoantibody receptor (CAAR) constructs built on γδ T cells integrate both classical and emerging insights into CAR γδ T cell therapy, highlighting innovations that are driving the field toward safer, more versatile, and longer-lasting treatments for cancer and autoimmunity. In light of these advancements, this review provides an overview of the current understanding of γδ T cell biology and highlights emerging engineering strategies that enhance the efficacy and durability of CAR γδ T cells across oncologic and autoimmune contexts.

Keywords

Chimeric antigen receptor (CAR) T cells; γδ T cells; cancer immunotherapy; autoimmune and inflammatory disease; precision medicine

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