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Alberti E, Zampakou M, Donghi D. Covalent and non-covalent binding of metal complexes to RNA. J Inorg Biochem 2016; 163:278-291. [DOI: 10.1016/j.jinorgbio.2016.04.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 03/12/2016] [Accepted: 04/12/2016] [Indexed: 01/19/2023]
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Li W, Jie Z, Li Z, Liu Y, Gan Q, Mao Y, Wang X. ERCC1 siRNA ameliorates drug resistance to cisplatin in gastric carcinoma cell lines. Mol Med Rep 2014; 9:2423-8. [PMID: 24699918 DOI: 10.3892/mmr.2014.2112] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Accepted: 02/24/2014] [Indexed: 11/06/2022] Open
Abstract
The present study examined the effects of cisplatin (DDP) on gastric carcinoma cells by inhibiting the expression of excision repair cross-complementing 1 (ERCC1) using RNA interference (RNAi). mRNA and protein expression of ERCC1 were measured in various gastric carcinoma cell lines using reverse transcription polymerase chain reaction (RT-PCR) and western blot analysis. Cells were treated with different concentrations of DDP and the cell viability was measured using an MTT assay. The correlation between the expression of the ERCC1 gene and the resistance to DDP in the cells was determined. The specific ERCC1 small interfering RNA (siRNA) was synthesized and then transfected into SGC-7901/DDP cells. Alterations in intracellular ERCC1 mRNA expression and protein levels were detected using RT-PCR and western blot analysis, the number of apoptotic cells were measured using flow-cytometry and the cell viability was measured using an MTT assay. The gene expression of ERCC1 correlated with the resistance to DDP of the cells. mRNA expression of ERCC1 was significantly reduced 24 h following transfection of ERCC1 siRNA compared with the mock control group. In addition, the number of apoptotic cells was increased and cell viability was significantly decreased in the ERCC1 siRNA-transfected group compared with the mock control group, suggesting that the sensitivity of SGC-7901/DDP cells to DDP had significantly increased. Cells transfected with siRNA1, siRNA2 and siRNA3 were significantly more sensitive to DPP (161, 381 and 249%, respectively) compared with the mock controls (P<0.05). The results of the present study showed that drug resistance to DDP in gastric carcinoma is correlated with increased expression of ERCC1; therefore, inhibition of ERCC1 by siRNA may ameliorate resistance to DDP in gastric carcinoma.
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Affiliation(s)
- Wei Li
- Department of General Surgery, Jiangxi Provincial Corps Hospital, Chinese People's Armed Police Force, Nanchang, Jiangxi 330003, P.R. China
| | - Zhigang Jie
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Zhengrong Li
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Yi Liu
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Quan Gan
- Department of General Surgery, Jiangxi Provincial Corps Hospital, Chinese People's Armed Police Force, Nanchang, Jiangxi 330003, P.R. China
| | - Yiqiu Mao
- Department of General Surgery, Jiangxi Provincial Corps Hospital, Chinese People's Armed Police Force, Nanchang, Jiangxi 330003, P.R. China
| | - Xuemin Wang
- Department of General Surgery, Jiangxi Provincial Corps Hospital, Chinese People's Armed Police Force, Nanchang, Jiangxi 330003, P.R. China
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Polonyi C, Alshiekh A, Sarsam LA, Clausén M, Elmroth SKC. Cisplatin-induced duplex dissociation of complementary and destabilized short GG-containing duplex RNAs. Dalton Trans 2014; 43:11941-9. [DOI: 10.1039/c4dt00213j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of a series of small size RNAs towards mono-aquated cisplatin was monitored using UV/vis spectroscopy. Subtle changes of local melting behavior were found to influence metal binding kinetics, with an increase in reactivity following central destabilization.
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Affiliation(s)
- Christopher Polonyi
- Biochemistry and Structural Biology
- KILU
- Lund University
- SE-221 00 Lund, Sweden
| | - Alak Alshiekh
- Biochemistry and Structural Biology
- KILU
- Lund University
- SE-221 00 Lund, Sweden
| | - Lamya A. Sarsam
- Biochemistry and Structural Biology
- KILU
- Lund University
- SE-221 00 Lund, Sweden
| | - Maria Clausén
- Biochemistry and Structural Biology
- KILU
- Lund University
- SE-221 00 Lund, Sweden
| | - Sofi K. C. Elmroth
- Biochemistry and Structural Biology
- KILU
- Lund University
- SE-221 00 Lund, Sweden
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Polonyi C, Elmroth SKC. Time dependence of cisplatin-induced duplex dissociation of 15-mer RNAs and mature miR-146a. Dalton Trans 2013; 42:14959-62. [DOI: 10.1039/c3dt51788h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Hedman HK, Kirpekar F, Elmroth SKC. Platinum Interference with siRNA Non-seed Regions Fine-Tunes Silencing Capacity. J Am Chem Soc 2011; 133:11977-84. [DOI: 10.1021/ja111082e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Hanna K. Hedman
- Department of Biochemistry and Structural Biology, Center for Molecular Protein Science, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| | - Finn Kirpekar
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Sofi K. C. Elmroth
- Department of Biochemistry and Structural Biology, Center for Molecular Protein Science, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
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Fan C, Xiong Y, Zhu N, Lu Y, Zhang J, Wang S, Liang Z, Shen Y, Chen M. Random small interfering RNA library screen identifies siRNAs that induce human erythroleukemia cell differentiation. Leuk Lymphoma 2011; 52:502-14. [DOI: 10.3109/10428194.2010.543712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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