期刊
SCIENTIFIC REPORTS
卷 5, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/srep11322
关键词
-
资金
- NIH/NIA [R01AG032432]
- NIH/NCCIH
- Silver Endowment
BACE1 initiates amyloid-beta (A beta) generation and the resultant cerebral amyloidosis, as a characteristic of Alzheimer's disease (AD). Thus, inhibition of BACE1 has been the focus of a large body of research. The most recent clinical trials highlight the difficulty involved in this type of anti-AD therapy as evidenced by side effects likely due to the ubiquitous nature of BACE1, which cleaves multiple substrates. The human Swedish mutant form of amyloid protein precursor (APPswe) has been shown to possess a higher affinity for BACE1 compared to wild-type APP (APPwt). We pursued a new approach wherein harnessing this greater affinity to modulate BACE1 APP processing activity. We found that one peptide derived from APPswe, containing the beta-cleavage site, strongly inhibits BACE1 activity and thereby reduces A beta production. This peptide, termed APPswe BACE1 binding site peptide (APPsweBBP), was further conjugated to the fusion domain of the HIV-1 Tat protein (TAT) at the C-terminus to facilitate its biomembrane-penetrating activity. APPwt and APPswe over-expressing CHO cells treated with this TAT-conjugated peptide resulted in a marked reduction of A beta and a significant increase of soluble APPa. Intraperitoneal administration of this peptide to 5XFAD mice markedly reduced a-amyloid deposits as well as improved hippocampal-dependent learning and memory.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据