Abstract:
:Endothelial dysfunction is fundamental to ischemic stroke and brain injury. The humanin analogue S14G-humanin (HNG) has been shown to be a cytoprotective derivative. In this study, we investigated the neuroprotective effects of HNG in vivo and in vitro. In a murine middle cerebral artery occlusion (MCAO) stroke model, HNG ameliorates cerebral infarction and suppresses the production of TNF-α, IL-1β, IL-6 and MCP-1 cytokines. HNG inhibits the expression of vascular adhesion molecules such as VCAM-1 and ICAM-1 in the cortex tissue. In mouse brain endothelial cells bEnd.3, HNG protects cell survival under oxygen deprivation (OGD) conditions. HNG suppresses ROS production as well as that of the same panel of cytokines and vascular adhesion molecules induced by OGD. HNG also reduces the numbers of THP-1 cells attached to bEnd.3 by OGD. Mechanistically, we show that HNG exerts its effect via inhibition of the NF- κB pathway factor IKKα, activation of IκBα and accumulation of p65 in the nucleus. Our data conclude that S14G-humanin serves as a neuroprotective factor, especially in brain vascular disorders. © 2018 IUBMB Life, 70(7):691-699, 2018.
journal_name
IUBMB Lifejournal_title
IUBMB lifeauthors
Peng T,Wan W,Wang J,Liu Y,Fu Z,Ma X,Li J,Sun G,Ji Y,Lu J,Lu H,Liu Ydoi
10.1002/iub.1869subject
Has Abstractpub_date
2018-07-01 00:00:00pages
691-699issue
7eissn
1521-6543issn
1521-6551journal_volume
70pub_type
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