ETS1 and SP1 Drive DHX15 Expression in Acute Lymphoblastic Leukaemia

Overview

Journal J Cell Mol Med

Specialties Cell Biology
Molecular Biology

Date 2018 Mar 8

PMID 29512921

Citations 8

Authors

Xiang-Lei Chen

Yuan-Hua Cai

Qiao Liu

Li-Li Pan

Shui-Ling Shi

Xiao-Li Liu

Yuan Chen

Jing-Gang Li

Jing Wang

Yang Li

Xiao-Fan Li

Shao-Yuan Wang

Affiliations

Soon will be listed here.

Abstract

DHX15 plays a role in leukaemogenesis and leukaemia relapse. However, the mechanism underlying the transcriptional regulation of DHX15 in ALL has not been elucidated. Our present study aimed to explore the functional promoter region of DHX15 and to investigate the transcription factors controlling the transcription of this gene. A luciferase assay performed with several truncated constructs identified a 501-bp region as the core promoter region of DHX15. Site-directed mutagenesis, electrophoretic mobility shift and chromatin immunoprecipitation assays showed that ETS1 and SP1 occupied the DHX15 promoter. Furthermore, knockdown of ETS1 and SP1 resulted in suppression of DHX15, whereas the overexpression of these genes led to up-regulation of DHX15. Interestingly, in samples obtained from patients with ALL at diagnosis, both ETS1 and SP1 correlated positively with DHX15 expression. Additionally, differences in methylation of the DHX15 core promoter region were not observed between the patients and controls. In conclusion, we identified the core promoter region of DHX15 and demonstrated that ETS1 and SP1 regulated DHX15 expression in ALL.

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