Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Bcr-abl silencing by specific small-interference RNA expression vector as a potential treatment for chronic myeloid leukemia

(2010) Bcr-abl silencing by specific small-interference RNA expression vector as a potential treatment for chronic myeloid leukemia. Iran Biomed J. pp. 1-8. ISSN 1028-852x

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Official URL: http://www.ncbi.nlm.nih.gov/pubmed/20683492

Abstract

BACKGROUND: RNA interference (RNAi) is the mechanism of gene silencing-mediated messenger RNA degradation by small interference RNA (siRNA), which becomes a powerful tool for in vivo research, especially in the areas of cancer. In this research, the potential use of an expression vector as a specific siRNA producing tool for silencing of Bcr-abl in K562 cell line has been investigated. METHODS: siRNA specific for Bcr-abl as short hairpin RNA (shRNA) was designed and cloned in expression vector (pRNAH1.1/Neo). K562 cells were cultured in RPMI media and transfected with shRNA expressing vector using lipofectamin 2000. Successful transfection was confirmed by significant increase of enhanced green fluorescent protein (EGFP) levels in K562-treated cells with expression vector (pEGFP-C1). In vitro studies in human K562 cell line entailed modulation of endogenous Bcr-abl mRNA levels which induced apoptosis. Effects of siRNA treatment on K562 cells were measured by ELISA. RESULTS: Successful expression of siRNA was confirmed by significant reduction of Bcr-abl mRNA levels in K562 cells treated with expression vector (pRNAH1.1/Neo). siRNA directed against Bcr-abl effectively induced apoptosis and reduced viability in human K562 cell lines. CONCLUSION: Expression vector of siRNA can be used in vitro to target specific RNA and to reduce the levels of the specific gene product in the targeted cells. Results of this work suggest that RNAi has potential application for the treatment of a variety of diseases, including those involving abnormal gene expression and viral contamination.

Item Type: Article
Keywords: Apoptosis/physiology Cell Survival/physiology Fusion Proteins, bcr-abl/*genetics Gene Expression Regulation, Leukemic Genetic Therapy/*methods Humans K562 Cells Leukemia, Myelogenous, Chronic, BCR-ABL Positive/*genetics/pathology/*therapy RNA, Messenger/metabolism RNA, Small Interfering/*genetics Transfection
Divisions:
Page Range: pp. 1-8
Journal or Publication Title: Iran Biomed J
Journal Index: Pubmed
Volume: 14
Number: 1-2
ISSN: 1028-852x
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/2138

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