Resveratrol suppresses neutrophil activation via inhibition of Src family kinases to attenuate lung injury

Free Radic Biol Med. 2019 Dec:145:67-77. doi: 10.1016/j.freeradbiomed.2019.09.021. Epub 2019 Sep 21.

Abstract

The natural stilbenoid, Resveratrol (RSV; 3,5,4'-trihydroxystilbene) has been shown to have beneficial effects on inflammatory diseases as well as cancer, neurodegenerative diseases, and cardiovascular disorders. The underlying mechanism by which RSV affects neutrophil activation has yet to be fully elucidated. In this study, we tested the hypothesis that RSV modulates the inflammatory activities of formyl-Met-Leu-Phe-stimulated human neutrophils. We employed a well-established isolated-neutrophil model to investigate the effects of RSV on neutrophil functions and the underlying mechanism of signaling transduction. The lipopolysaccharide-induced ALI murine model was employed to evaluate the therapeutic effects of RSV. Experiment results demonstrate that RSV reduces respiratory burst, degranulation, integrin expression, and cell adhesion in activated neutrophils in dose-dependent manners. RSV inhibited phosphorylation of Src family kinases (SFKs) and reduced their enzymatic activities. Moreover, RSV and a selective inhibitor of SFKs (PP2) reduced the phosphorylation of Bruton's tyrosine kinase and Vav. There results indicated that the inhibitory effects of RSV are mediated through the inhibition of the SFKs-Btk-Vav pathway. This study also revealed that RSV attenuates endotoxin-induced lung injury. We surmise that the therapeutic effects of RSV on ALI may derive from its anti-neutrophilic inflammation function and free radical-scavenging effects.

Keywords: Lung injury; Neutrophil; Reactive oxygen species; Resveratrol; Src family kinase; Superoxide anion.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Lung Injury / chemically induced
  • Acute Lung Injury / drug therapy*
  • Acute Lung Injury / genetics
  • Acute Lung Injury / pathology
  • Agammaglobulinaemia Tyrosine Kinase / genetics
  • Animals
  • Humans
  • Lipopolysaccharides / toxicity
  • Mice
  • Neutrophil Activation / drug effects*
  • Neutrophil Activation / genetics
  • Neutrophils / drug effects
  • Phosphorylation
  • Resveratrol / pharmacology*
  • Signal Transduction / drug effects
  • src-Family Kinases / genetics*

Substances

  • Lipopolysaccharides
  • Agammaglobulinaemia Tyrosine Kinase
  • src-Family Kinases
  • Resveratrol