ArticleInflammation2023
Inhibition of PD-1 Alters the SHP1/2-PI3K/Akt Axis to Decrease M1 Polarization of Alveolar Macrophages in Lung Ischemia-Reperfusion Injury.
Article in Inflammation, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 18 citations in OpenAlex.
- Alveolar Macrophages: Development, Respiratory Homeostasis, Signal Pathways, Diseases, and Therapeutic Opportunities.MedComm · 2026Review
- LILRB4 Recruits SHP-1 to Enhance Oxidative Stress and Apoptosis, Aggravating Myocardial Ischemia-Reperfusion Injury.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026Article
- LACC1 attenuates LPS-induced acute lung injury by inhibiting inflammatory response in alveolar macrophage through LPAR3/PI3K/AKT/mTOR signaling pathway.Biomarker research · 2026Article
- Emodin Alleviates Acute Pancreatitis-Associated Acute Lung Injury by Inhibiting Serum Exosomal miRNA-21-3p-Induced M1 Alveolar Macrophage Polarisation.Journal of cellular and molecular medicine · 2025Article
- Parkinson's disease: exploring the systemic immune mechanisms through molecular investigations.Inflammopharmacology · 2025Review
- Article
- Pharmacological modulation of PI3K/PTEN/Akt/mTOR/ERK signaling pathways in ischemic injury: a mechanistic perspective.Metabolic brain disease · 2025Review
- Natural saponins and macrophage polarization: Mechanistic insights and therapeutic perspectives in disease management.Frontiers in pharmacology · 2025Review
- Advances in lung ischemia/reperfusion injury: unraveling the role of innate immunity.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2024Review
- The Potential of Siglecs and Sialic Acids as Biomarkers and Therapeutic Targets in Tumor Immunotherapy.Cancers · 2024Review
- MAGL regulates synovial macrophage polarization vis inhibition of mitophagy in osteoarthritic pain.Molecular medicine reports · 2023Article
- Macrophage Polarization and the Regulation of Bone Immunity in Bone Homeostasis.Journal of inflammation research · 2023Review
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
Polarization of alveolar macrophages (AMs) into the M1 phenotype contributes to inflammatory responses and tissue damage that occur during lung ischemia-reperfusion injury (LIRI). Programmed cell death factor-1 (PD-1) regulates polarization of macrophages, but its role in LIRI is unknown. We examined the role of PD-1 in AM polarization in models of LIRI in vivo and in vitro. Adult Sprague-Dawley rats were subjected to ischemia-reperfusion with or without pretreatment with a PD-1 inhibitor, SHP1/2 inhibitor, or Akt activator. Lung tissue damage and infiltration by M1-type AMs were assessed. As an in vitro complement to the animal studies, rat alveolar macrophages in culture were subjected to oxygen/glucose deprivation and reoxygenation. Levels of SHP1/2 and Akt proteins were evaluated using Western blots, while levels of pro-inflammatory cytokines were measured using enzyme-linked immunosorbent assays. Injury upregulated PD-1 both in vivo and in vitro. Inhibiting PD-1 reduced the number of M1-type AMs, expression of SHP1 and SHP2, and levels of inflammatory cytokines. At the same time, it partially restored Akt activation. Similar results were observed after inhibition of SHP1/2 or activation of the PI3K/Akt pathway. PD-1 promotes polarization of AMs to the M1 phenotype and inflammatory responses through the SHP1/2-PI3K/Akt axis. Inhibiting PD-1 may be an effective therapeutic strategy to limit LIRI.
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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.