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Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
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Nuclear Coregulatory Complexes in Tregs as Targets to Promote Anticancer Immune Responses

Lanette M Christensen1, Wayne W Hancock1,2

  • 1Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, United States.

Frontiers in Immunology
|July 7, 2022
PubMed

Insights

Regulatory complexes influence T-regulatory (Treg) cell function in cancer. Targeting these epigenetic regulators, including histone deacetylases (HDACs), may offer new cancer immunotherapy strategies.

Area of Science:

  • Immunology
  • Epigenetics
  • Cancer Biology

Background:

  • T-regulatory (Treg) cells exhibit diverse responses in cancer, impacting antitumor immunity.
  • Treg cell function is modulated by multiprotein nuclear complexes controlling gene expression.
  • Epigenetic modifications, particularly involving histone deacetylases (HDACs), are crucial for Treg stability and identity.

Purpose of the Study:

  • To investigate the role of multiprotein nuclear complexes in Treg heterogeneity in cancer.
  • To explore the impact of epigenetic regulators, such as HDACs, on Treg function and cancer response.
  • To assess the therapeutic potential of targeting Treg-associated regulatory complexes in cancer immunotherapy.

Main Methods:

  • Analysis of Treg cell populations in cancer patients.
  • Investigation of epigenetic modifications within Treg cells.
  • Characterization of multiprotein complexes involving HDACs and histone methyltransferases.
  • Assessment of Treg functional impact on antitumor immune responses.

Main Results:

  • Treg cell heterogeneity significantly influences cancer progression and patient outcomes.
  • Epigenetic regulators, including HDACs 1, 2, and 3, are critical for maintaining Foxp3 expression and Treg identity.
  • Specific multiprotein complexes directly impact Treg gene expression and epigenetic profiles.

Conclusions:

  • Multiprotein complexes, particularly those involving HDACs, are key determinants of Treg function in cancer.
  • Targeting these epigenetic regulatory complexes in Tregs presents a promising avenue for developing personalized cancer immunotherapies.
Keywords:
SIN3AT-regulatory cellshistone/protein deacetylasesinhibitorstumor immunity

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