Promoter;
Estrogen receptor;
ER-alpha;
36;
Breast cancer;
HUMAN BREAST CARCINOMAS;
ELEMENT HALF-SITE;
BINDING-SITES;
IDENTIFICATION;
GROWTH;
GENE;
ACTIVATION;
PATHWAYS;
CANCER;
WT1;
D O I:
10.1016/j.febslet.2009.03.047
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
070307 [化学生物学];
071010 [生物化学与分子生物学];
摘要:
Recently, we identified and cloned a membrane-based estrogen receptor (ER), ER-alpha 36, which is transcribed from a previously unidentified promoter in the first intron of the original ER-alpha gene. We cloned the 5' flanking region of ER-alpha 36 and found the cloned DNA sequence possessed strong promoter activity. A single transcription initiation site was mapped and a number of putative regulatory elements for various transcription factors such as the Wilms' tumor suppressor, WT1 and estrogen receptor (ER) were identified in this region. Transient co-transfection experiments further demonstrated that ER-alpha suppresses ER-alpha 36 promoter activity in an estrogen-independent manner, which can be released by ER-alpha 36 itself. (C) 2009 Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies.