To Help or To Harm: Dynamic Roles of CD4+ T Helper Cells in Solid Tumor Microenvironments

Shannon M. Liudahl, Lisa Coussens

Research output: Chapter in Book/Report/Conference proceedingChapter

9 Scopus citations


In addition to their functional relevance in pathogenic infection and autoimmune disease, leukocytes also play critical roles in regulating cancer progression, and immunotherapies designed to enhance antitumor immune responses are becoming mainstays in clinical oncology. Complex interactions between different leukocyte subtypes recruited to neoplastic microenvironments can result in either tumor promotional or tumor suppressive programming. Therefore, understanding the mechanisms regulating the balance between these states is critical for developing improved immune-based cancer therapeutics. Effector and memory CD8+ T cells are well established as key mediators of tumor cytotoxicity, but the roles of CD4+ T cells in tumor microenvironments have not been as extensively explored. In this chapter, we review current understandings of the diverse roles played by CD4+ T helper cell subsets in either promoting or suppressing progression of solid tumors.

Original languageEnglish (US)
Title of host publicationImmunology
Subtitle of host publicationImmunotoxicology, Immunopathology, and Immunotherapy
Number of pages20
ISBN (Electronic)9780128098974
ISBN (Print)9780128098196
StatePublished - Oct 27 2017


  • Crosstalk
  • Neoplastic cells
  • Solid tumor
  • T helper cells
  • Tumor microenvironment

ASJC Scopus subject areas

  • General Medicine
  • General Immunology and Microbiology


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