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γδ T Cells as a Platform for Immunotherapy: From Biological Principles to Clinical Translation
Junjie Ni1, Chao Xiong1, Xian Wu1
1Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.
Gamma delta (γδ) T cells show promise for immunotherapy due to their unique effector functions. However, challenges like heterogeneity and limited understanding hinder their clinical application, requiring further research for optimized therapeutic design.
Area of Science:
- Immunology
- Cellular Biology
- Cancer Research
Background:
- Gamma delta (γδ) T cells possess innate-like effector functions and adaptive immune features.
- They recognize stress signals independently of MHC, making them attractive for immunotherapy.
- Significant heterogeneity in γδ T cell subsets, localization, and function currently limits their clinical utility.
Purpose of the Study:
- To review the fundamental biology of γδ T cell development, classification, and antigen recognition.
- To explore how context-dependent γδ T cell functions influence therapeutic strategies.
- To summarize current translational approaches and their limitations.
Main Methods:
- Comprehensive literature review integrating evidence on γδ T cell biology in cancer, infection, and autoimmunity.
- Evaluation of major translational strategies for γδ T cell-based therapies.
- Analysis of biological principles governing γδ T cell function and therapeutic design.
Main Results:
- Current therapeutic strategies include in vivo activation, adoptive transfer, combination regimens, engineered cells, and cell-free approaches like extracellular vesicles.
- Clinical translation is impeded by product heterogeneity, insufficient cell expansion and persistence, and incomplete mechanistic understanding.
- γδ T cells offer a versatile platform combining innate and adaptive immune characteristics.
Conclusions:
- Future γδ T cell therapy development should focus on mechanism-guided engineering and biomarker-informed strategies.
- Improved clinical study designs are crucial for advancing γδ T cell-based immunotherapies.
- Overcoming heterogeneity and mechanistic gaps is key to unlocking the full therapeutic potential of γδ T cells.
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