Original Article
piRNAs derived from GAS5 activating tumor suppressor FOXO4 in breast cancer cell
Xinxin Chen, Ting Xia, Xiaowu Hu, Tengfei Cao, Lehong Zhang
Published 2017-06-01
Cite as Chin Arch Gen Surg(Electronic Edition), 2017, 11(3): 154-158. DOI: 10.3877/cma.j.issn.1674-0793.2017.03.003
Abstract
ObjectiveTo investigate the activation of FOXO4 by piRNAs derived from GAS5 in breast cancer cell.
MethodsA mixture of the five chemically synthesized single-stranded piRNAs, including pi-sno44/74/75/78/81, were transfected into MCF7 cells. Protein expression of FOXO4 and gene expression detected by microarray mRNA, and quantitative analysis of FOXO4 was performed from 29 clinical breast samples.
ResultsFOXO4 expression was up-regulated in breast cancer cells, and the up-regulation was related to pi-sno44/74/75/81 (Corr=0.64, 0.91, 0.76, 0.93, P<0.001), but not to pi-sno78 (Corr=0.25, P=0.912).
ConclusionpiRNAs including pi-sno44/74/75/81 derived from GAS5 can mediate the induction of FOXO4, and may lead to the inhibition of tumor growth.
Key words:
Breast neoplasms; Microchip analytical procedures; piRNA; FOXO4
Contributor Information
Xinxin Chen
Department of Breast Surgery, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510080, China
Ting Xia
Xiaowu Hu
Tengfei Cao
Lehong Zhang