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Proceedings Paper

Screening mTOR siRNA based on bioinformatics and detecting the transcription by the gold nanoparticle beacon
Author(s): Caiping Tian; Yi Ma; Siwen Li; Yueqing Gu
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Paper Abstract

Mammalian target of rapamycin (mTOR) as a key protein in PI3K-AKT-mTOR signaling pathway ,plays an important role in the tumor growth. The small interfering RNA (siRNA) of mTOR would decrease the expression of mTOR protein. In this study, we screened the mTOR siRNA sequence using MATLAB software and ascertained it based on BLAST. Then we imported it with the aid of Lipofectamine2000 into MCF-7 cancer cells where mTOR is over expression .And then we used a special hairpin deoxyribonucleic acid (DNA) for combining with the human mTOR mRNA to functionalize gold nanoparticles, which served as a molecule beacon for detecting human mTOR mRNA transcription. Laser scanning confocal microscope and Flow Cytometry data showed that the quenching efficiency was up to 90%,which are consistent with the RT-PCR measurement and Western. Compared to the previous approaches, this beacon has advantages of higher target to background ratio of detection. The strategy reported in this study is a promising approach for the intracellular measurement of the result of siRNA or protein expression in living cells, and has great potential in the study of drug screening and discovery.

Paper Details

Date Published: 17 September 2014
PDF: 9 pages
Proc. SPIE 9230, Twelfth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2014), 92300D (17 September 2014); doi: 10.1117/12.2068706
Show Author Affiliations
Caiping Tian, China Pharmaceutical Univ. (China)
Yi Ma, China Pharmaceutical Univ. (China)
Siwen Li, China Pharmaceutical Univ. (China)
Yueqing Gu, China Pharmaceutical Univ. (China)

Published in SPIE Proceedings Vol. 9230:
Twelfth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2014)
Qingming Luo; Lihong V. Wang; Valery V. Tuchin, Editor(s)

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