دورية أكاديمية
In vitro inhibitory analysis of consensus siRNAs against NS3 gene of hepatitis C virus 1a genotype.
| العنوان: | In vitro inhibitory analysis of consensus siRNAs against NS3 gene of hepatitis C virus 1a genotype. |
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| المؤلفون: | Shahid I; Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al Qura University, P.O. Box 13578, Makkah, Saudi Arabia. Electronic address: iyshahid@uqu.edu.sa., AlMalki WH; Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al Qura University, P.O. Box 13578, Makkah, Saudi Arabia., AlRabia MW; Department of Medical Microbiology, College of Medicine, King Abdul Aziz University, Jeddah, Saudi Arabia., Mukhtar MH; Department of Biochemistry, Faculty of Medicine, Umm Al Qura University, Makkah, Saudi Arabia., Almalki SSR; Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Albaha University, Albaha, Saudi Arabia., Alkahtani SA; College of Pharmacy, Najran University, Najran, Saudi Arabia., Ashgar SS; Department of Microbiology, College of Medicine, Umm Al Qura University, P.O. Box. 13765, Makkah, Saudi Arabia., Faidah HS; Department of Microbiology, College of Medicine, Umm Al Qura University, P.O. Box. 13765, Makkah, Saudi Arabia., Hafeez MH; Department of Gastroenterology and Hepatology, Fatima Memorial College of Medicine and Dentistry, Shadman, Lahore 54000, Pakistan. |
| المصدر: | Asian Pacific journal of tropical medicine [Asian Pac J Trop Med] 2017 Jul; Vol. 10 (7), pp. 701-709. Date of Electronic Publication: 2017 Aug 08. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wolters Kluwer/Medknow Country of Publication: India NLM ID: 101533720 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2352-4146 (Electronic) Linking ISSN: 19957645 NLM ISO Abbreviation: Asian Pac J Trop Med Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Publication: 2018- : Mumbai, India : Wolters Kluwer/Medknow Original Publication: 2008-: Heidelberg : Springer |
| مستخلص: | Objective: To explore inhibitory effects of genome-specific, chemically synthesized siRNAs (small interference RNA) against NS3 gene of hepatitis C virus (HCV) 1a genotype in stable Huh-7 (human hepatoma) cells as well as against viral replication in serum-inoculated Huh-7 cells. Methods: Stable Huh-7 cells persistently expressing NS3 gene were produced under antibiotic gentamycin (G418) selection. The cell clones resistant to 1000 μg antibiotic concentration (G418) were picked as stable cell clones. The NS3 gene expression in stable cell clone was confirmed by RT-PCR and Western blotting. siRNA cell cytotoxicity was determined by MTT cell proliferation assay. Stable cell lines were transfected with sequence specific siRNAs and their inhibitory effects were determined by RT-PCR, real-time PCR and Western blotting. The viral replication inhibition by siRNAs in serum inoculated Huh-7 cells was determined by real-time PCR. Results: RT-PCR and Western blot analysis confirmed NS3 gene and protein expression in stable cell lines on day 10, 20 and 30 post transfection. MTT cell proliferation assay revealed that at most concentrated dose tested (50 nmol/L), siRNA had no cytotoxic effects on Huh-7 cells and cell proliferation remained unaffected. As demonstrated by the siRNA time-dependent inhibitory analysis, siRNA NS3-is44 showed maximum inhibition of NS3 gene in stable Huh-7 cell clones at 24 (80%, P = 0.013) and 48 h (75%, P = 0.002) post transfection. The impact of siRNAs on virus replication in serum inoculated Huh-7 cells also demonstrated significant decrease in viral copy number, where siRNA NS3-is44 exhibited 70% (P < 0.05) viral RNA reduction as compared to NS3-is33, which showed a 64% (P < 0.05) decrease in viral copy number. siRNA synergism (NS3-is33 + NS3-is44) decreased viral load by 84% (P < 0.05) as compared to individual inhibition by each siRNA (i.e., 64%-70% (P < 0.05)) in serum-inoculated cells. Synthetic siRNAs mixture (NS5B-is88 + NS3-is33) targeting different region of HCV genome (NS5B and NS3) also decreased HCV viral load by 85% (P < 0.05) as compared to siRNA inhibitory effects alone (70% and 64% respectively, P < 0.05). Conclusions: siRNAs directed against NS3 gene significantly decreased mRNA and protein expression in stable cell clones. Viral replication was also vividly decreased in serum infected Huh-7 cells. Stable Huh-7 cells expressing NS3 gene is helpful to develop anti-hepatitis C drug screening assays. siRNA therapeutic potential along with other anti-HCV agents can be considered against hepatitis C. (Copyright © 2017 Hainan Medical University. Production and hosting by Elsevier B.V. All rights reserved.) |
| فهرسة مساهمة: | Keywords: HCV therapeutics; Hepatitis C virus; NS3 protein; NS5B; RNA interference; Stable Huh-7 cell culture system |
| تواريخ الأحداث: | Date Created: 20170906 Latest Revision: 20191120 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1016/j.apjtm.2017.07.011 |
| PMID: | 28870347 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 2352-4146 |
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| DOI: | 10.1016/j.apjtm.2017.07.011 |