Introduction: Chronic obstructive pulmonary disease (COPD) is characterized by progressive inflammation during therapy. Cystic fibrosis (CF), alpha-one antitrypsin deficiency (AATD), and non-CF bronchiectasis are also chronic respiratory disorders with inflammation and progression that share many similarities with COPD. Therefore, various anti-inflammatory approaches are currently being investigated, and protein phosphatase 2A (PP2A) activators may represent one such approach.
Areas Covered: Systematic review of papers published from 2000-to date on the anti-inflammatory role of endogenous PP2A, the consequences of its inhibition by smoking, and the beneficial effects of its activation in COPD.
Expert Opinion: PP2A activation is a plausible therapeutic approach in COPD and related disorders, such as CF, AATD, and non-CF bronchiectasis, although the available evidence is still mostly experimental. Metformin repurposing and consideration of inhalation for some of the molecules discussed in this study are promising approaches.
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http://dx.doi.org/10.1080/13543784.2024.2416982 | DOI Listing |
Int Immunopharmacol
January 2025
Department of Geriatric Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, Shandong Province, China. Electronic address:
Cytokine storm is a life-threatening systemic hyper-inflammatory state caused by different etiologies, in which the bulk production of pro-inflammatory cytokines from activated macrophages has a central role. Integrated stress response (ISR) comprises several protective signaling pathways, leading to phosphorylation of eukaryotic initiation factor 2α (eIF2α) and repression of protein translation. Emerging evidence suggests that ISR induction may elicit anti-inflammatory effects.
View Article and Find Full Text PDFSci Immunol
January 2025
Department of Cell and Developmental Biology, School of Biological Sciences, University of California San Diego, La Jolla, CA 92093, USA.
Mechanistic understanding of the inhibitory immunoreceptor PD-1 is largely based on mouse models, but human and mouse PD-1 share only 59.6% amino acid identity. Here, we found that human PD-1 is more inhibitory than mouse PD-1, owing to stronger interactions with the ligands PD-L1 and PD-L2 and more efficient recruitment of the effector phosphatase Shp2.
View Article and Find Full Text PDFPLoS One
January 2025
Instituto de Investigación en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud Universidad de Guadalajara, Guadalajara, Mexico.
Studies have noted the connection between Mycobacterium avium subspecies paratuberculosis (MAP) and autoimmunity. MAP is an intracellular pathogen that infects and multiplies in macrophages. To overcome the hostile environment elicited by the macrophage, MAP secretes a battery of virulence factors to neutralize the toxic effects of the macrophage.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Michigan State University, Grand Rapids, MI, USA.
Background: The pathological correlate most tightly associated with cognitive decline in AD is synapse loss. The presence of pathological tau significantly correlates with synaptotoxicity and cognitive decline in AD, yet it is currently unclear how pathological tau causes synapse loss. Within the brain, complement component C1q coats the outer membrane of weak or damaged synapses, resulting in the phagocytic removal of tagged synapses by microglia.
View Article and Find Full Text PDFBrief Bioinform
November 2024
Department of Bioinformatics and Systems Biology, MOE Key Laboratory of Molecular Biophysics, Hubei Bioinformatics and Molecular Imaging Key Laboratory, Center for Artificial Intelligence Biology, College of Life Science and Technology, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, Hubei 430074, China.
Protein phosphorylation is dynamically and reversibly regulated by protein kinases and protein phosphatases, and plays an essential role in orchestrating a wide range of biological processes. Although a number of tools have been developed for predicting kinase-specific phosphorylation sites (p-sites), computational prediction of phosphatase-specific dephosphorylation sites remains to be a great challenge. In this study, we manually curated 4393 experimentally identified site-specific phosphatase-substrate relationships for 3463 dephosphorylation sites occurring on phosphoserine, phosphothreonine, and/or phosphotyrosine residues, from the literature and public databases.
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