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PP2A and Its Inhibitors in Helper T-Cell Differentiation and Autoimmunity

Mohd Moin Khan1,2,3, Ubaid Ullah Kalim1,2, Meraj H Khan1,2

  • 1Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland.

Frontiers in Immunology
|January 24, 2022
PubMed

Insights

Protein phosphatase 2A (PP2A) constrains T-cell inflammation and autoimmunity. Modulating PP2A activity offers potential therapeutic strategies for autoimmune and neuroinflammatory diseases.

Area of Science:

  • Immunology
  • Cellular Biology
  • Biochemistry

Background:

  • Protein phosphatase 2A (PP2A) is a key Ser/Thr phosphatase regulating numerous cellular functions.
  • While its tumor suppressor role is established, recent findings highlight PP2A's critical involvement in inflammatory responses.
  • Emerging evidence links PP2A to autoimmune and neuroinflammatory conditions.

Purpose of the Study:

  • To review the literature on PP2A's role in T-cell differentiation and autoimmunity.
  • To explore how PP2A activity is modulated by endogenous inhibitors.
  • To discuss small-molecule activators of PP2A as potential therapeutic agents for autoimmunity.

Main Methods:

  • Literature review of existing studies on PP2A in T-cell differentiation and autoimmunity.
  • Analysis of mechanisms regulating PP2A activity.
  • Discussion of therapeutic strategies targeting PP2A.

Main Results:

  • PP2A plays a significant role in constraining inflammatory responses mediated by T-cells.
  • Dysregulation of PP2A is implicated in the pathogenesis of autoimmune and neuroinflammatory diseases.
  • Endogenous inhibitors and small-molecule activators represent viable approaches for therapeutic intervention.

Conclusions:

  • PP2A is a crucial regulator of T-cell differentiation and a key player in preventing autoimmunity.
  • Targeting PP2A activity holds promise for developing novel treatments for autoimmune and neuroinflammatory disorders.
Keywords:
PP2APP2A activating drugsT cell differentiationautoimmune diseaseinflammatory

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