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Visualizing Antigen Specific CD4+ T Cells using MHC Class II Tetramers
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Visualizing Antigen Specific CD4+ T Cells using MHC Class II Tetramers

Published on: March 6, 2009

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Using major histocompatibility complex (MHC) II expression to predict antitumor response to CD4 + lymphocyte

Yanping Wang1, Minhyung Kim1, Shengchen Su1

  • 1Department of Urology, Cedars Sinai Medical Center, 8635 W. Third St, 1070, Los Angeles, CA, 90048, USA.

Scientific Reports
|February 14, 2025
PubMed

Insights

Cancer immunotherapy using CD4+ T cell depletion shows varied results. Tumor MHC II expression dictates whether CD4+ T cell depletion suppresses or enhances tumor growth, impacting patient survival and treatment strategies.

Area of Science:

  • Immunology
  • Oncology
  • Cancer Research

Background:

  • Immunotherapy targeting CD4+FoxP3+ regulatory T cells (Tregs) via CD4+ lymphocyte depletion is a developing cancer treatment strategy.
  • Understanding the efficacy and limitations of CD4 depletion across diverse cancer types is crucial.

Purpose of the Study:

  • To investigate the efficacy and limitations of CD4 depletion in various syngeneic mouse tumor models.
  • To explore the relationship between MHC II expression, tumor growth, immune response, and survival.
  • To validate findings in human cancer data.

Main Methods:

  • CD4 depletion was examined in B16 melanoma, Renca kidney cancer, and Hepa1-6 hepatocellular carcinoma mouse models.
  • MHC II expression's role was investigated by manipulating MHC II levels in cancer cell lines.
  • TCGA dataset analysis was performed to assess clinical relevance.

Main Results:

  • CD4 depletion suppressed B16 and Renca tumor growth but accelerated Hepa1-6 tumor growth.
  • Hepa1-6 tumors exhibited high MHC II expression, while B16 and Renca showed low MHC II expression.
  • TCGA data indicated that high MHC II/low MHC I tumors with increased CD4 levels correlated with improved survival.

Conclusions:

  • CD4 depletion's effect on tumor growth is contingent on tumor MHC II expression status.
  • MHC status may determine if intratumor CD4 levels are a more effective early-response marker than CD8.
  • This highlights the potential for personalized cancer immunotherapy based on MHC expression.
Keywords:
CD4 depletionMHC IITumor immunology

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