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Infectious Disease: Hepatitis C

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Total 109 results found since Jan 2013.

Controlling HCV infection by targeting its translation initiation site in PBMCs using siRNA; In Vitro.
Abstract Hepatitis C virus infection and its complications are among the leading public health challenges, the emergence of drug-resistant variants is expected to be a major problem. A combinatorial small interfering RNA (siRNA) could be a novel triple therapy that could be suitable for genotype 4. HCV believed to be hepatotropic, but there is liable evidence about its replication in peripheral blood mononuclear cells (PBMC) of chronic HCV infected patients. These cells act as an extra-hepatic reservoir for viral recurrence and persistence, patients with HCV-RNA in PBMC showed a significantly lower response to the...
Source: Infectious Disorders Drug Targets - November 14, 2018 Category: Infectious Diseases Authors: Youssef SS, Elemeery MN, Eldein SS, Ghareeb DA Tags: Infect Disord Drug Targets Source Type: research

Inhibition of hepatitis C virus genotype 4 replication using siRNA targeted to the viral core region and the CD81 cellular receptor.
Abstract Hepatitis C virus (HCV) is one of the most important causative agents of hepatitis worldwide. The current study aimed to evaluate the silencing effect of the small interference RNA (siRNA) molecules designed against the core region of HCV genotype 4 (HCV-4) and the CD81 gene, which is the cellular receptor for HCV in the human hepatocytes. RT-PCR was used to measure the changes in both the viral HCV core and the cellular CD81 genes induced by the specific siRNA molecules. Additionally, the fluctuations in either the viral or the cellular proteins of the target regions were tested by flow cytometry and imm...
Source: Cell Stress and Chaperones - February 13, 2020 Category: Cytology Authors: Aljowaie RM, Almajhdi FN, Ali HH, El-Wetidy MS, Shier MK Tags: Cell Stress Chaperones Source Type: research

Silencing of the scavenger receptor (Class B - Type 1) gene using siRNA-loaded chitosan nanaoparticles in a HepG2 cell model.
In this study, we investigated the use of chitosan nanoparticles as non-viral delivery carriers of siRNA. As a model target, we selected the scavenger receptor (SR-B1), due to its proposed involvement in hepatitis C virus (HCV) internalization. Low molecular weight (LMW) chitosan nanoparticles were prepared by simple ionic gelation using sodium tripolyphosphate (TPP) as a cross-linking agent; a fixed chitosan and TPP concentration of 0.1% was used, and a chitosan to TPP weight ratios of 3:1, 5:1, and 9:1 were investigated. Nanoparticle uptake efficiency was measured using FITC-labeled chitosan nanoparticles and silencing o...
Source: Colloids and Surfaces - November 3, 2014 Category: Biotechnology Authors: Farid MM, Hathout RM, Fawzy M, Abou-Aisha K Tags: Colloids Surf B Biointerfaces Source Type: research

Inhibition of hepatitis C virus using siRNA targeted to the virus and Hsp90.
Abstract Hepatitis C (HCV) is a viral disease affecting millions of people worldwide, and persistent HCV infection can lead to progressive liver disease with the development of liver cirrhosis and hepatocellular carcinoma. During treatment for hepatitis C, the occurrence of viral resistance is common. To reduce the occurrence of resistance, new viral treatments should target both viral and cellular factors. Many interactions occur between viral and host proteins during the HCV replication cycle and might be used for the development of new therapies against hepatitis C. Heat shock protein 90 (Hsp90) plays a role in...
Source: Cell Stress and Chaperones - November 16, 2016 Category: Cytology Authors: Braga AC, Carneiro BM, Batista MN, Akinaga MM, Rahal P Tags: Cell Stress Chaperones Source Type: research

Silencing of the Scavenger Receptor (Class B - Type 1) Gene Using siRNA-Loaded Chitosan Nanaoparticles in a HepG2 Cell Model
In this study, we investigated the use of chitosan nanoparticles as non-viral delivery carriers of siRNA. As a model target, we selected the scavenger receptor (SR-B1), due to its proposed involvement in hepatitis C virus (HCV) internalization. Low molecular weight (LMW) chitosan nanoparticles were prepared by simple ionic gelation using sodium tripolyphosphate (TPP) as a cross-linking agent; a fixed chitosan and TPP concentration of 0.1% was used, and a chitosan to TPP weight ratios of 3:1, 5:1, and 9:1 were investigated. Nanoparticle uptake efficiency was measured using FITC-labeled chitosan nanoparticles and silencing o...
Source: Colloids and Surfaces B: Biointerfaces - November 8, 2014 Category: Biochemistry Source Type: research

Silencing of the scavenger receptor (Class B – Type 1) gene using siRNA-loaded chitosan nanaoparticles in a HepG2 cell model
In this study, we investigated the use of chitosan nanoparticles as non-viral delivery carriers of siRNA. As a model target, we selected the scavenger receptor (SR-B1), due to its proposed involvement in hepatitis C virus (HCV) internalization. Low molecular weight (LMW) chitosan nanoparticles were prepared by simple ionic gelation using sodium tripolyphosphate (TPP) as a cross-linking agent; a fixed chitosan and TPP concentration of 0.1% was used, and a chitosan to TPP weight ratios of 3:1, 5:1, and 9:1 were investigated. Nanoparticle uptake efficiency was measured using FITC-labeled chitosan nanoparticles and silencing o...
Source: Colloids and Surfaces B: Biointerfaces - November 17, 2014 Category: Biochemistry Source Type: research

Inhibition of hepatitis C virus in mouse models by lipidoid nanoparticle-mediated systemic delivery of siRNA against PRK2
Publication date: Available online 22 March 2016 Source:Nanomedicine: Nanotechnology, Biology and Medicine Author(s): Jae-Su Moon, Seung-Hoon Lee, Song-Hee Han, Eun-Jung Kim, Hee Cho, Wooseong Lee, Mi-Kyung Kim, Tae-Eun Kim, Hyun-Ji Park, Jin-Kyu Rhee, Seong-Jun Kim, Seung-Woo Cho, Seung Hyun Han, Jong-Won Oh Host-targeting antivirals have an advantage over direct-acting antivirals in that they have a high genetic barrier to resistance. Here, we describe in vivo anti-hepatitis C virus (HCV) efficacy of a potent siRNA targeting the protein kinase C-related kinase 2 (PRK2), which phosphorylates HCV NS5B RNA-d...
Source: Nanomedicine: Nanotechnology, Biology and Medicine - March 21, 2016 Category: Nanotechnology Source Type: research

In vitro inhibitory analysis of consensus siRNAs against NS3 gene of hepatitis C virus 1a genotype
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.
Source: Asian Pacific Journal of Tropical Medicine - August 9, 2017 Category: Tropical Medicine Source Type: research

In  vitro inhibitory analysis of consensus siRNAs against NS3 gene of hepatitis C virus 1a genotype
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.
Source: Asian Pacific Journal of Tropical Medicine - August 18, 2017 Category: Tropical Medicine Source Type: research

IFIT5 Participates in the Antiviral Mechanisms of Rainbow Trout Red Blood Cells
We described a new defense mechanism based on IFIT5 antiviral activity in nucleated RBCs that appeared to contribute to halting the VHSV infection. This finding sheds light into novel antiviral therapeutics to mitigate the economic losses and social impact caused by viral infections in the aquaculture industry. This work broadens the knowledge of fish nucleated RBCs functions and their role in the immune response to viral infections. Ethics Statement Experimental protocols and methods relating to experimental animals were reviewed and approved by the Animal Welfare Body and the Research Ethics Committee at the University...
Source: Frontiers in Immunology - April 15, 2019 Category: Allergy & Immunology Source Type: research

STAT3‑regulated long non‑coding RNAs lnc‑7SK and lnc‑IGF2‑AS promote hepatitis C virus replication.
Authors: Xiong Y, Jia M, Yuan J, Zhang C, Zhu Y, Kuang X, Lan L, Wang X Abstract Long non‑coding RNAs (lncRNAs) are a class of RNAs that do not code protein but are important in diverse biological processes. In previous years, with the application of high‑throughput sequencing, a large number of lncRNAs associated with virus infections have been identified and intensively investigated, however, there are few studies examining the association between lncRNAs and HCV replication. Previous studies have demonstrated that signal transducer and activator of transcription 3 (STAT3) is activated by the hepatitis C vi...
Source: Molecular Medicine Reports - September 4, 2015 Category: Molecular Biology Tags: Mol Med Rep Source Type: research

Expression of Duplex shRNAs through a Lentiviral Vector against Cellular and Viral Genes Inflicts Sustained Inhibition of Hepatitis C Virus Replication
Conclusion: A lentiviral vector-based delivery system is a “single-shot” therapeutic strategy. It can express duplex shRNA for long-term synergistic inhibition of HCV and qualify as a promising therapeutic approach for sustained inhibition of HCV replication.Intervirology
Source: Intervirology - October 4, 2018 Category: Virology Source Type: research

Silencing of the foot-and-mouth disease virus internal ribosomal entry site by targeting relatively conserved region among serotypes
AbstractFoot-and-mouth disease (FMD) is a host-restricted disease of cloven-hoofed animals, such as cattle and pigs. There are seven major serotypes of FMD virus that exhibit high antigenic variation, making vaccine strain selection difficult. However, there is an internal ribosomal entry site (IRES) element within the 5 ′ untranslated region of the FMD virus (FMDV) RNA genome that is relatively conserved among FMDV serotypes and could be used as a pan-serotype target for disease interventions. To determine the potential for targeting the IRES as promising drug target, we designed a short interfering RNA (siRNA) t argeti...
Source: Virus Genes - July 30, 2019 Category: Genetics & Stem Cells Source Type: research

Abstract 3171: Overexpression of a cancer stem cell marker doublecortin-like kinase (DCLK1) leads to activation of inflammatory cascade during development of virus-induced hepatocellular carcinoma
Conclusions: DCLK1 overexpression appears to be intimately related to the activation of pro-inflammatory and MAPK signaling pathways during the development of virus-induced pre-neoplastic conditions and initiation of tumors in liver. Thus, targeting DCLK1 at early stage of liver diseases may prevent virus-induced cirrhosis and HCC. Citation Format: Naushad Ali, Parthasarathy Chandrakesan, Mark Huycke, Sanam Husain, Allison F. Gillaspy, Randal May, William L. Berry, Sripathi Sureban, Dongfeng Qu, Nathaniel Weygant, Michael S. Bronze, Danny N. Dhanasekaran, Courtney W. Houchen. Overexpression of a cancer stem cell marker dou...
Source: Cancer Research - September 30, 2014 Category: Cancer & Oncology Authors: Ali, N., Chandrakesan, P., Huycke, M., Husain, S., Gillaspy, A. F., May, R., Berry, W. L., Sureban, S., Qu, D., Weygant, N., Bronze, M. S., Dhanasekaran, D. N., Houchen, C. W. Tags: Carcinogenesis Source Type: research