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Proteinase inhibitors from Streptomyces with antiviral activity
Author(s) -
Serkedjieva Julia,
Angelova Lidiya,
Remichkova Mimi,
Ivanova Iskra
Publication year - 2006
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.200510127
Subject(s) - virus , microbiology and biotechnology , biology , proteases , herpes simplex virus , streptomyces , protease , virology , influenza a virus , strain (injury) , enzyme , bacteria , biochemistry , genetics , anatomy
Abstract An extensive screening study for the production of proteolytic inhibitors has been carried out on 75 Streptomyces strains. It was found that 18 of the strains and/or their variants (24%) produced proteinaceous substances, which belonged to the group of typical serine protease inhibitors. 23 samples were tested for inhibitory activity on the replication of influenza virus A/Germany/34, strain Rostock (H7N1) (A/Rostock) in chicken embryonic fibroblast (CEF) cells. Eleven of the tested samples (52.2%) significantly inhibited viral growth. Further the specific inhibitory effect on the replication of influenza virus A/Aichi/2/68 (H3N2) (A/Aichi) in Madin‐Darby canine kidney (MDCK) cells and on the growth of herpes simplex virus type 1, strain DA (HSV‐1) in Madin‐Darby bovine kidney (MDBK) cells was tested. Nine samples significantly inhibited A/Aichi and four – HSV‐1. The most effective inhibitors, produced by Streptomyces sp. 225b (SS 225b) and Streptomyces chromofuscus 34‐1 (SS 34‐1) protected mice from mortality in the experimental influenza A/Aichi virus infection. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)