Core Element Cloning, Cis-Element Mapping and Serum Regulation of the Human EphB4 Promoter: A Novel TATA-Less Inr/MTE/DPE-Like Regulated Gene.

ABSTRACT: The EphB4 gene encodes for a transmembrane tyrosine kinase receptor involved in embryonic blood vessel differentiation and cancer development. Although EphB4 is known to be regulated at the post-translational level, little is known about its gene regulation. The present study describes the core promoter elements' identification and cloning, the cis-regulatory elements' mapping and the serum regulation of the human EphB4 gene promoter region. Using bioinformatic analysis, Sanger sequencing and recombinant DNA technology, we analyzed the EphB4 gene upstream region spanning +40/-1509 from the actual transcription start site (TSS) and proved it to be a TATA-less gene promoter with dispersed regulatory elements characterized by a novel motif-of-ten element (MTE) at positions +18/+28, and a DPE-

SUBMITTER: Scalia P 

PROVIDER: S-EPMC6947382 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature