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Article

Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81

  • Authors:
    • Xiaojing Liu
    • Na Chen
    • Shumei Lin
    • Min Liu
  • View Affiliations / Copyright

    Affiliations: Department of Infectious Diseases, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
  • Pages: 836-842
    |
    Published online on: January 19, 2016
       https://doi.org/10.3892/ijmm.2016.2459
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Abstract

Hepatitis C virus (HCV) infection is a significant public health problem worldwide. However, there is still a lack of effective therapeutic drugs which could be used for the interruption of the disease. In the present study, for the first time, we reported that a synthesized peptide, which was synthesized by solid phase peptide synthesis and derived from the amino acids 710 to 725 of the HCV E2, functioned as an inhibitor of HCV infection. Using an MTT assay, we found that the E2 (710-725) peptide exerted no specific cytotoxicity on Huh7.5 cells and primary human hepatocytes (pHH). Interestingly, E2 (710-725) peptide blocked the entry of cell culture‑derived HCV (HCVcc) into hepatocytes. Moreover, it suppressed HCV RNA replication and HCV-specific protein NS3 and NS5B expression, as shown by western blot analysis. Moreover, E2 (710-725) markedly attenuated the inhibitory effect of HCVcc on hepatocyte viability. Additionally, a co-immuninoprecipitation assay demonstrated that E2 (710-725) abrogated the interaction between CD81 and HCV E2 envelope protein through competitive binding of CD81. Overall, our results revealed that the synthesized peptide E2 (710-725) blocked CD81‑mediated HCV entry and possessed the potential to treat HCV infection. Thus, the present study provided novel insights into the development of new drugs for preventing HCV infection.
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Copy and paste a formatted citation
Spandidos Publications style
Liu X, Chen N, Lin S and Liu M: Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81. Int J Mol Med 37: 836-842, 2016.
APA
Liu, X., Chen, N., Lin, S., & Liu, M. (2016). Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81. International Journal of Molecular Medicine, 37, 836-842. https://doi.org/10.3892/ijmm.2016.2459
MLA
Liu, X., Chen, N., Lin, S., Liu, M."Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81". International Journal of Molecular Medicine 37.3 (2016): 836-842.
Chicago
Liu, X., Chen, N., Lin, S., Liu, M."Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81". International Journal of Molecular Medicine 37, no. 3 (2016): 836-842. https://doi.org/10.3892/ijmm.2016.2459
Copy and paste a formatted citation
x
Spandidos Publications style
Liu X, Chen N, Lin S and Liu M: Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81. Int J Mol Med 37: 836-842, 2016.
APA
Liu, X., Chen, N., Lin, S., & Liu, M. (2016). Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81. International Journal of Molecular Medicine, 37, 836-842. https://doi.org/10.3892/ijmm.2016.2459
MLA
Liu, X., Chen, N., Lin, S., Liu, M."Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81". International Journal of Molecular Medicine 37.3 (2016): 836-842.
Chicago
Liu, X., Chen, N., Lin, S., Liu, M."Synthesized peptide 710-725 from HCV subtype 1a E2 glycoprotein blocks HCV infection through competitive binding of CD81". International Journal of Molecular Medicine 37, no. 3 (2016): 836-842. https://doi.org/10.3892/ijmm.2016.2459
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