9^th World Biomarkers Congress

Biography

Biography: Şükrü Tüzmen

Abstract

A classical technique to determine the function of a gene is to experimentally inhibit its gene expression in order to examine the resulting phenotype or eff ect on molecular endpoints and signaling pathways. RNA interference (RNAi) is one of the recent discoveries of a naturally occurring mechanism of gene regulation facilitated by the induction of double stranded RNA into a cell. Th is event can be utilized to silence the expression of specifi c genes by transfecting mammalian cells with synthetic short interfering RNAs (siRNAs). siRNAs can be designed to silence the expression of specifi c genes bearing a particular target sequence and may potentially be presented as a therapeutic strategy for inhibiting transcriptional regulation of genes, which in such instances constitute a more attractive strategy than small molecule drugs. Low dose drug and siRNA combination studies are promising strategies for the purpose of identifying synergistic targets that facilitate reduction of undesired gene expression and/or cell growth depending on the research of interest. Commercially available RNAi libraries have made high-throughput genome-scale screening a feasible methodology for studying complex mammalian cell systems. However, it is crucial that any observed phenotypic change be confi rmed at either the mRNA and/or protein level to determine the validity of the targeted genes. Currently, qPCR is widely utilized for accurate evaluation and validation of gene expression profi ling. In this study, we describe a high-throughput screening of RNAi based gene knock-down approach and qPCR validation of specifi c transcript levels. Considering such advantageous applications, siRNA technology has become an ideal research tool for studying gene function in research fi elds including Pharmaceutical Biotechnology, and holds the promise that the utilization of siRNA-based therapeutic agents will accelerate drug discovery in clinical trials.