Cited by 128Cell Adhesion Molecules ResearchNF-κB Signaling PathwaysImmune Response and Inflammation

αVβ3 integrin regulates macrophage inflammatory responses via PI3 kinase/Akt‐dependent NF‐κB activation

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Antonov, Alexander S., Antonova, Galina N., Munn, David H., Mivechi, Nahid, Lucas, Rudolf, Catravas, John D., Verin, Alexander D.·2011·Journal of Cellular Physiology

Abstract

Controlling macrophage responses to pathogenic stimuli is critical for prevention of and recovery from the inflammatory state associated with the pathogenesis of many diseases. The adhesion receptor αVβ3 integrin is thought to be an important receptor that regulates macrophage differentiation and macrophage responses to external signaling, but it has not been previously identified as a contributor to macrophage‐related inflammation. Using an in vitro model of human blood monocytes (Mo) and monocyte‐derived macrophages (MDMs) we demonstrate that αVβ3 ligation results in sustained increases of the transcription factor NF‐κB DNA‐binding activity, as compared with control isotype‐matched IgG 1. Activation of NF‐κB parallels the increase of NF‐κB‐dependent pro‐inflammatory cytokine mRNA expression in MDMs isolated from individual donors, for example, TNF‐α (8‐ to 28‐fold), IL‐1β (15‐ to 30‐fold), IL‐6 (2‐ to 4‐fold), and IL‐8 (5‐ to 15‐fold) whereas there is more than a 10‐fold decrease in IL‐10 mRNA level occurs. Upon ligation of the αVβ3 receptor, treatment with TNF‐α (10 ng/ml) or LPS (200 ng/ml, 1,000 EU) results in the enhanced and synergistic activation of NF‐κB and LPS‐induced TNF‐α secretion. As additional controls, an inhibitor of αVβ3 integrin, cyclic RGD (10 µg/ml; IC 50 = 7.6 µM), attenuates the effects of αVβ3 ligation, and the natural ligand of αVβ3 integrin, vitronectin, reproduces the effects of αVβ3 activation by an immobilizing anti‐αVβ3 integrin mAb. We hypothesize that αVβ3 activation can maintain chronic inflammatory processes in pathological conditions and that the loss of αVβ3 ligation will allow macrophages to escape from the inflammatory state. J. Cell. Physiol. 226: 469–476, 2011. © 2010 Wiley‐Liss, Inc.

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Authors
Antonov, A. S., Antonova, G. N., Munn, D. H., Mivechi, N., Lucas, R., Catravas, J. D., & Verin, A. D.
Affiliations
Augusta University (US)
Corresponding author
Verin, Alexander D.
Venue
Journal of Cellular Physiology
Publisher
Wiley
Published
2010-11-26
Volume
226
Issue
2
Pages
469-476
ISSN
  • 0021-9541 (ISSN-L)
  • 1097-4652
OpenAlex
W1998325568
Cited by
128
References
52
Citations by year
2026: 5 · 2025: 9 · 2024: 4 · 2023: 15 · 2022: 10 · 2021: 14 · 2020: 8 · 2019: 14 · 2018: 5 · 2017: 5 · 2016: 12 · 2015: 6 · 2014: 4 · 2013: 5 · 2012: 10
FWCI
3.86
Type
journal article
Language
en
Open access
Locations
  • Journal of Cellular Physiology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (R01CA132640, R01CA062130)
Topics
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
integrin αvβ3, macrophage inflammation, NF-κB activation, PI3K/Akt signaling, monocyte-derived macrophages, inflammatory cytokines, TNF-α, IL-1β, interleukin-6, interleukin-8, IL-10, lipopolysaccharide, vitronectin, cyclic RGD peptide, chronic inflammation
MeSH terms
Animals, Enzyme Inhibitors, Humans, Inflammation, Macrophages, Monocytes, Tumor Necrosis Factor-alpha, Signal Transduction, Cytokines, NF-kappa B, Phosphatidylinositol 3-Kinases, Integrin alphaVbeta3, Proto-Oncogene Proteins c-akt

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