In:
Journal of Biomedicine and Biotechnology, Hindawi Limited, Vol. 2012 ( 2012), p. 1-6
Abstract:
Dengue diseases have an economic as well as social burden worldwide. In this study, the antiviral activity of protegrin-1 (PG-1, RGGRLCYCRRRFCVCVGR) peptide towards dengue NS2B-NS3pro and viral replication in Rhesus monkey kidney (MK2) cells was investigated. The peptide PG-1 was synthesized by solid-phase peptide synthesis, and disulphide bonds formation followed by peptide purification was confirmed by LC-MS and RPHPLC. Dengue NS2B-NS3pro was produced as a single-chain recombinant protein in E. coli . The NS2B-NS3pro assay was carried out by measuring the florescence emission of catalyzed substrate. Real-time PCR was used to evaluate the inhibition potential of PG-1 towards dengue serotype-2 (DENV-2) replication in MK2 cells. The results showed that PG-1 inhibited dengue NS2B-NS3pro at IC 50 of 11.7 μ M. The graded concentrations of PG-1 at nontoxic range were able to reduce viral replication significantly ( P 〈 0 . 001 ) at 24, 48, and 72 hrs after viral infection. However, the percentage of inhibition was significantly ( P 〈 0 . 01 ) higher at 24 hrs compared to 48 and 72 hrs. These data show promising therapeutic potential of PG-1 against dengue infection, hence it warrants further analysis and improvement of the peptide features as a prospective starting point for consideration in designing attractive dengue virus inhibitors.
Type of Medium:
Online Resource
ISSN:
1110-7243
,
1110-7251
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2012
detail.hit.zdb_id:
2698540-8
detail.hit.zdb_id:
2512507-2
SSG:
12
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