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Essentials of Th17 cell commitment and plasticity.

Pawel Muranski1, Nicholas P Restifo

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Summary
This summary is machine-generated.

CD4(+) T helper cell polarization creates distinct epigenetic states influencing function and persistence. Th17 cell plasticity enhances survival and self-renewal, impacting immune memory formation.

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Area of Science:

  • Immunology
  • Cell Biology
  • Epigenetics

Background:

  • CD4(+) T helper (Th) cells differentiate into specialized subsets with unique functions.
  • These subsets, including Th1, Th2, Th17, and regulatory T cells, are defined by epigenetic states.
  • Th17 cells are characterized by retinoic acid-related orphan receptor gamma (RORγt) and interleukin-17 (IL-17) production.

Purpose of the Study:

  • To investigate the epigenetic states and plasticity of CD4(+) T helper cell subsets.
  • To understand how T cell polarization impacts cell survival, function, and immune memory.
  • To explore the implications of Th17 cell plasticity in immunity and disease.

Main Methods:

  • Analysis of epigenetic states in CD4(+) T helper cell subsets.
  • Assessment of cytokine production and surface marker expression.
  • Evaluation of cell survival, self-renewal, and response to secondary stimulation.

Main Results:

  • T cell polarization induces specific epigenetic patterns, surface markers, and cytokine profiles.
  • Th17 cells exhibit significant plasticity, acquiring Th1-like characteristics.
  • Plasticity in Th17 cells correlates with enhanced in vivo survival and self-renewal compared to stable Th1 cells.

Conclusions:

  • CD4(+) T cell subset polarization involves a maturational aspect affecting long-term immune function.
  • Th17 cell plasticity is crucial for microbial defense, autoimmunity, and antitumor immunity.
  • Understanding T cell polarization and plasticity is key to harnessing immune memory for therapeutic applications.