ArticleCell cycle (Georgetown, Tex.)2016
T cell proliferation and adaptive immune responses are critically regulated by protein phosphatase 4.
Article in Cell cycle (Georgetown, Tex.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 23 citations in OpenAlex.
- SMEK1 ablation promotes glucose uptake and improves obesity-related metabolic dysfunction via AMPK signaling pathway.American journal of physiology. Endocrinology and metabolism · 2024Article
- Natural STAT3 Inhibitors for Cancer Treatment: A Comprehensive Literature Review.Recent patents on anti-cancer drug discovery · 2024Review
- The Effect of In Utero Exposure to Maternal Inflammatory Bowel Disease and Immunomodulators on Infant Immune System Development and Function.Cellular and molecular gastroenterology and hepatology · 2023Review
- Smek1 deficiency exacerbates experimental autoimmune encephalomyelitis by activating proinflammatory microglia and suppressing the IDO1-AhR pathway.Journal of neuroinflammation · 2021Article
- Functional roles of protein phosphatase 4 in multiple aspects of cellular physiology: a friend and a foe.BMB reports · 2020Review
- DNA Methylation Profile in Human Cord Blood Mononuclear Leukocytes From Term Neonates: Effects of Histological Chorioamnionitis.Frontiers in pediatrics · 2020Article
- PP4 deficiency leads to DNA replication stress that impairs immunoglobulin class switch efficiency.Cell death and differentiation · 2019Article
- Protein phosphatase 4 coordinates glial membrane recruitment and phagocytic clearance of degenerating axons in Drosophila.Cell death & disease · 2017Article
- Detection and quantification of dengue virus using a novel biosensor system based on dengue NS3 protease activity.PloS one · 2017Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The clonal expansion of activated T cells is pivotal for the induction of protective immunity. Protein phosphatase 4 (PP4) is a ubiquitously expressed serine/threonine phosphatase with reported functions in thymocyte development and DNA damage responses. However, the role of PP4 in T cell immunity has not been thoroughly investigated. In this report, our data showed that T cell-specific ablation of PP4 resulted in defective adaptive immunity, impaired T cell homeostatic expansion, and inefficient T cell proliferation. This hypo-proliferation was associated with a partial G1-S cell cycle arrest, enhanced transcriptions of CDK inhibitors and elevated activation of AMPK. In addition, resveratrol, a known AMPK activator, induced similar G1-S arrests, while lentivirally-transduced WT or constitutively-active AMPKα1 retarded the proliferation of WT T cells. Further investigations showed that PP4 co-immunoprecipitated with AMPKα1, and the over-expression of PP4 inhibited AMPK phosphorylation, thereby implicating PP4 for the negative regulation of AMPK. In summary, our results indicate that PP4 is an essential modulator for T cell proliferation and immune responses; they further suggest a potential link between PP4 functions, AMPK activation and G1-S arrest in activated T cells.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.