Targeting RNS/caveolin-1/MMP signaling cascades to protect against cerebral ischemia-reperfusion injuries: potential application for drug discovery

Acta Pharmacol Sin. 2018 May;39(5):669-682. doi: 10.1038/aps.2018.27. Epub 2018 Mar 29.

Abstract

Reactive nitrogen species (RNS) play important roles in mediating cerebral ischemia-reperfusion injury. RNS activate multiple signaling pathways and participate in different cellular events in cerebral ischemia-reperfusion injury. Recent studies have indicated that caveolin-1 and matrix metalloproteinase (MMP) are important signaling molecules in the pathological process of ischemic brain injury. During cerebral ischemia-reperfusion, the production of nitric oxide (NO) and peroxynitrite (ONOO-), two representative RNS, down-regulates the expression of caveolin-1 (Cav-1) and, in turn, further activates nitric oxide synthase (NOS) to promote RNS generation. The increased RNS further induce MMP activation and mediate disruption of the blood-brain barrier (BBB), aggravating the brain damage in cerebral ischemia-reperfusion injury. Therefore, the feedback interaction among RNS/Cav-1/MMPs provides an amplified mechanism for aggravating ischemic brain damage during cerebral ischemia-reperfusion injury. Targeting the RNS/Cav-1/MMP pathway could be a promising therapeutic strategy for protecting against cerebral ischemia-reperfusion injury. In this mini-review article, we highlight the important role of the RNS/Cav-1/MMP signaling cascades in ischemic stroke injury and review the current progress of studies seeking therapeutic compounds targeting the RNS/Cav-1/MMP signaling cascades to attenuate cerebral ischemia-reperfusion injury. Several representative natural compounds, including calycosin-7-O-β-D-glucoside, baicalin, Momordica charantia polysaccharide (MCP), chlorogenic acid, lutein and lycopene, have shown potential for targeting the RNS/Cav-1/MMP signaling pathway to protect the brain in ischemic stroke. Therefore, the RNS/Cav-1/MMP pathway is an important therapeutic target in ischemic stroke treatment.

Publication types

  • Review

MeSH terms

  • Animals
  • Brain Ischemia / physiopathology
  • Brain Ischemia / prevention & control*
  • Caveolin 1 / metabolism
  • Caveolin 1 / physiology
  • Humans
  • Matrix Metalloproteinases / metabolism
  • Matrix Metalloproteinases / physiology
  • Momordica charantia / chemistry
  • Neuroprotective Agents / therapeutic use*
  • Reactive Nitrogen Species / metabolism
  • Reactive Nitrogen Species / physiology
  • Reperfusion Injury / prevention & control*
  • Signal Transduction / drug effects*
  • Stroke / physiopathology
  • Stroke / prevention & control*

Substances

  • Caveolin 1
  • Neuroprotective Agents
  • Reactive Nitrogen Species
  • Matrix Metalloproteinases