Document Detail


Capsicum annuum L. trypsin inhibitor as a template scaffold for new drug development against pathogenic yeast.
MedLine Citation:
PMID:  22160750     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A 6,000 Da peptide, named CaTI, was isolated from Capsicum annuum L. seeds and showed potent inhibitory activity against trypsin and chymotrypsin. The aim of this study was to determine the effect of CaTI on Saccharomyces cerevisiae, Candida albicans, Candida tropicalis and Kluyveromyces marxiannus cells. We observed that CaTI inhibited the growth of S. cerevisiae, K. marxiannus as well as C. albicans and induced cellular agglomeration and the release of cytoplasmic content. No effect on growth was observed in C. tropicalis but morphological changes were noted. In the spot assay, different degrees of sensitivity were shown among the strains and concentrations tested. Scanning electron microscopy showed that S. cerevisiae, K. marxiannus and C. albicans, in the presence of CaTI, exhibited morphological alterations, such as the formation of pseudohyphae, cellular aggregates and elongated forms. We also show that CaTI induces the generation of nitric oxide and interferes in a dose-dependent manner with glucose-stimulated acidification of the medium mediated by H(+)-ATPase of S. cerevisiae cells.
Authors:
Suzanna F F Ribeiro; Marciele S Silva; Maura Da Cunha; André O Carvalho; Germana B Dias; Guilherme Rabelo; Erica O Mello; Claudete Santa-Catarina; Rosana Rodrigues; Valdirene M Gomes
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-8
Journal Detail:
Title:  Antonie van Leeuwenhoek     Volume:  -     ISSN:  1572-9699     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372625     Medline TA:  Antonie Van Leeuwenhoek     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ, 28013-602, Brazil.
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