Human HS1BP3 induces cell apoptosis and activates AP-1.

Abstract:

:In the present study, we characterized the function of HS1-binding protein 3 (HS1BP3), which is mutated in essential tremor and may be involved in lymphocyte activation. We found that HS1BP3 localized to the mitochondria and endoplasmic reticulum partially. Overexpression of HS1BP3 induced apoptosis in HEK293T and HeLa cell lines. When these cell lines were transfected with HS1BP3, they exhibited nuclear DNA condensation, externalization of phosphatidylserine (PS), and cleavage of poly ADP ribose polymerase (PARP). Furthermore, suppression of HS1BP3 or HS1 expression attenuates HS1BP3 induced apoptosis. In addition, HS1BP3 enhanced activator protein 1 (AP-1)-mediated transcription in a dose-dependent manner. Therefore, we conclude that HS1BP3 regulates apoptosis via HS1 and stimulates AP-1-mediated transcription.

journal_name

BMB Rep

journal_title

BMB reports

authors

Shi T,Xie J,Xiong Y,Deng W,Guo J,Wang F,Ma D

doi

10.5483/BMBRep.2011.44.6.381

subject

Has Abstract

pub_date

2011-06-01 00:00:00

pages

381-6

issue

6

eissn

1976-6696

issn

1976-670X

journal_volume

44

pub_type

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