Role of Nkx2.5 in H₂O₂-induced Nsd1 suppression.

ABSTRACT: Nuclear receptor-binding SET domain-containing protein 1 (Nsd1) acts as a histone lysine methyltransferase, and its role in oxidative stress-related abnormal embryonic heart development remains poorly understood. In the present study, H₂O₂ decreased the expression of Nsd1 and NK2 transcription factor related locus 5 (Nkx2.5). We further focused on Nkx2.5 modulating the transcription of Nsd1 in response to H₂O₂. Luciferase activity analysis indicated that a regulatory region from - 646 to - 282 is essential for the basal transcriptional activity, in which, an a Nkx2.5-binding element (NKE) was identified at - 412/- 406 of the Nsd1 promoter by electrophoresis mobility shift assay and a chromatin immunoprecipitation assay. H₂O₂

SUBMITTER: Liang X 

PROVIDER: S-EPMC6629736 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature