A novel PGAM5 inhibitor LFHP-1c protects blood-brain barrier integrity in ischemic stroke.
A novel PGAM5 inhibitor LFHP-1c protects blood-brain barrier integrity in ischemic stroke.
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一种新型的PGAM5抑制剂LFHP-1C保护缺血性中风中的血脑屏障完整性。
DOI:
10.1016/j.apsb.2021.01.008
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发表时间:
2021-07
期刊:
影响因子:
--
通讯作者:
Pang T
中科院分区:
文献类型:
--
作者:
Gao C;Xu Y;Liang Z;Wang Y;Shang Q;Zhang S;Wang C;Ni M;Wu D;Huang Z;Pang T
Blood–brain barrier (BBB) damage after ischemia significantly influences stroke outcome. Compound LFHP-1c was previously discovered with neuroprotective role in stroke model, but its mechanism of action on protection of BBB disruption after stroke remains unknown. Here, we show that LFHP-1c, as a direct PGAM5 inhibitor, prevented BBB disruption after transient middle cerebral artery occlusion (tMCAO) in rats. Mechanistically, LFHP-1c binding with endothelial PGAM5 not only inhibited the PGAM5 phosphatase activity, but also reduced the interaction of PGAM5 with NRF2, which facilitated nuclear translocation of NRF2 to prevent BBB disruption from ischemia. Furthermore, LFHP-1c administration by targeting PGAM5 shows a trend toward reduced infarct volume, brain edema and neurological deficits in nonhuman primate Macaca fascicularis model with tMCAO. Thus, our study identifies compound LFHP-1c as a firstly direct PGAM5 inhibitor showing amelioration of ischemia-induced BBB disruption in vitro and in vivo, and provides a potentially therapeutics for brain ischemic stroke. LFHP-1c directly binding to PGAM5 inhibits PGAM5 enzyme activity and impairs PGAM5 interaction with NRF2, promoting NRF2 transcription activity to protect against blood–brain barrier disruption and ischemic brain injury.
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DOI:
10.1083/jcb.201701107
发表时间:
2017-12-04
期刊:
The Journal of cell biology
影响因子:
--
作者:
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DOI:
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发表时间:
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The Journal of cell biology
影响因子:
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16.6
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Li, Xu-Wen