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Updated: Sep 12, 2025

Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses
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Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses

Published on: May 6, 2019

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A CD4+ T lymphocyte-specific TCR/GSDMD/IL-2 axis facilitates antitumor immunity

Yihan Yao1, Lingling Wang1, Weiqin Jiang2

  • 1Institute of Immunology and Bone Marrow Transplantation Center and.

The Journal of Clinical Investigation
|August 4, 2025
PubMed

Insights

Gasdermin D (GSDMD) protein is crucial for CD4+ T cells to support CD8+ T cell antitumor immunity by inducing IL-2 production. This finding reveals a new role for GSDMD in cancer immunity.

Area of Science:

  • Immunology
  • Oncology
  • Molecular Biology

Background:

  • Gasdermin (GSDM) proteins are known to mediate pyroptosis and influence cancer progression.
  • The role of GSDM proteins in the tumor immune microenvironment is largely unexplored.

Purpose of the Study:

  • To investigate the function of Gasdermin D (GSDMD) in the tumor immune microenvironment.
  • To elucidate the non-pyroptotic roles of GSDMD in anti-tumor immunity.

Main Methods:

  • Analysis of GSDMD activation in human tumor specimens.
  • GSDMD deficiency and inactivation studies in CD4+ T cells using mouse models.
  • Investigation of IL-2 production and T cell help mechanisms.
  • Biochemical assays to study GSDMD pore formation and calcium influx.

Main Results:

  • GSDMD activation in human tumors primarily occurs in tumor-infiltrating leukocytes.
  • GSDMD deficiency in CD4+ T cells impairs CD8+ T cell-mediated anti-tumor immunity and promotes tumor growth.
  • GSDMD is essential for CD4+ T cell-mediated help to CD8+ T cells via IL-2 induction.
  • GSDMD-N pore formation enhances Ca2+ influx, leading to IL-2 production upon T cell receptor stimulation.
  • GSDMD function is conserved in human CD4+ T cells and correlates with better prognosis and immunotherapy response.

Conclusions:

  • GSDMD plays a critical non-pyroptotic role in orchestrating CD4+ T cell help for CD8+ T cell anti-tumor immunity.
  • GSDMD activation is a potential biomarker for immunotherapy response.
  • GSDMD represents a novel therapeutic target for enhancing cancer immunotherapy.
Keywords:
Calcium signalingCancer immunotherapyImmunologyOncologyT cells

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