Protein Phosphatase 2A: Role in T Cells and Diseases

Protein phosphatase 2A (PP2A) is a serine–threonine phosphatase that plays an important role in the regulation of cell proliferation and signal transduction. The catalytic activity of PP2A is integral in the maintenance of physiological functions which gets severely impaired in its absence. PP2A pla...

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Main Authors: Suyasha Roy, Lalit Batra
Format: Article
Language:English
Published: Wiley 2023-01-01
Series:Journal of Immunology Research
Online Access:http://dx.doi.org/10.1155/2023/4522053
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author Suyasha Roy
Lalit Batra
author_facet Suyasha Roy
Lalit Batra
author_sort Suyasha Roy
collection DOAJ
description Protein phosphatase 2A (PP2A) is a serine–threonine phosphatase that plays an important role in the regulation of cell proliferation and signal transduction. The catalytic activity of PP2A is integral in the maintenance of physiological functions which gets severely impaired in its absence. PP2A plays an essential role in the activation, differentiation, and functions of T cells. PP2A suppresses Th1 cell differentiation while promoting Th2 cell differentiation. PP2A fosters Th17 cell differentiation which contributes to the pathogenesis of systemic lupus erythematosus (SLE) by enhancing the transactivation of the Il17 gene. Genetic deletion of PP2A in Tregs disrupts Foxp3 expression due to hyperactivation of mTORC1 signaling which impairs the development and immunosuppressive functions of Tregs. PP2A is important in the induction of Th9 cells and promotes their antitumor functions. PP2A activation has shown to reduce neuroinflammation in a mouse model of experimental autoimmune encephalomyelitis (EAE) and is now used to treat multiple sclerosis (MS) clinically. In this review, we will discuss the structure and functions of PP2A in T cell differentiation and diseases and therapeutic applications of PP2A-mediated immunotherapy.
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spelling doaj-art-24b9bedc65e3461f8096fef3f72888772025-02-03T06:42:47ZengWileyJournal of Immunology Research2314-71562023-01-01202310.1155/2023/4522053Protein Phosphatase 2A: Role in T Cells and DiseasesSuyasha Roy0Lalit Batra1Immuno-Biology LaboratoryRegional Biocontainment LaboratoryProtein phosphatase 2A (PP2A) is a serine–threonine phosphatase that plays an important role in the regulation of cell proliferation and signal transduction. The catalytic activity of PP2A is integral in the maintenance of physiological functions which gets severely impaired in its absence. PP2A plays an essential role in the activation, differentiation, and functions of T cells. PP2A suppresses Th1 cell differentiation while promoting Th2 cell differentiation. PP2A fosters Th17 cell differentiation which contributes to the pathogenesis of systemic lupus erythematosus (SLE) by enhancing the transactivation of the Il17 gene. Genetic deletion of PP2A in Tregs disrupts Foxp3 expression due to hyperactivation of mTORC1 signaling which impairs the development and immunosuppressive functions of Tregs. PP2A is important in the induction of Th9 cells and promotes their antitumor functions. PP2A activation has shown to reduce neuroinflammation in a mouse model of experimental autoimmune encephalomyelitis (EAE) and is now used to treat multiple sclerosis (MS) clinically. In this review, we will discuss the structure and functions of PP2A in T cell differentiation and diseases and therapeutic applications of PP2A-mediated immunotherapy.http://dx.doi.org/10.1155/2023/4522053
spellingShingle Suyasha Roy
Lalit Batra
Protein Phosphatase 2A: Role in T Cells and Diseases
Journal of Immunology Research
title Protein Phosphatase 2A: Role in T Cells and Diseases
title_full Protein Phosphatase 2A: Role in T Cells and Diseases
title_fullStr Protein Phosphatase 2A: Role in T Cells and Diseases
title_full_unstemmed Protein Phosphatase 2A: Role in T Cells and Diseases
title_short Protein Phosphatase 2A: Role in T Cells and Diseases
title_sort protein phosphatase 2a role in t cells and diseases
url http://dx.doi.org/10.1155/2023/4522053
work_keys_str_mv AT suyasharoy proteinphosphatase2aroleintcellsanddiseases
AT lalitbatra proteinphosphatase2aroleintcellsanddiseases