Arrested growth of Trypanosoma cruzi by the calpain inhibitor MDL28170 and detection of calpain homologues in epimastigote forms

dc.creatorSangenito, L. S.
dc.creatorEnnes-Vidal, V.
dc.creatorMarinho, F. A.
dc.creatorMota, F. F. da
dc.creatorSantos, A. L. S.
dc.creatorD'Avila-Levy, C. M.
dc.creatorBranquinha, M. H.
dc.date2019-01-17T12:25:05Z
dc.date2019-01-17T12:25:05Z
dc.date2009
dc.date.accessioned2023-09-26T20:16:11Z
dc.date.available2023-09-26T20:16:11Z
dc.identifierSANGENITO, L. S. et al. Arrested growth of Trypanosoma cruzi by the calpain inhibitor MDL28170 and detection of calpain homologues in epimastigote forms. Parasitology, v.136, p.433–434, 2009.
dc.identifier0031-1820
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/31099
dc.identifier10.1017/S0031182009005629
dc.identifier1469-816
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8852938
dc.descriptionIn this paper, we aimed to explore the effects of the calpain inhibitor III (MDL28170) and to detect calpain-like molecules (CALPs) in epimastigote forms of Trypanosoma cruzi isolate Dm28c. MDL28170 at 70 microM promoted a powerful reduction in the growth rate after 48 h. The IC50 value was calculated to be 31.7 microM. This inhibitor promoted an increase in the cellular volume, but not cell lysis, resulting in a trypanostatic effect. T. cruzi CALPs presented a strong cross-reactivity with anti-Drosophila melanogaster calpain and anti-cytoskeleton-associated protein from Trypanosoma brucei antibodies, and labelling was found mainly intracellularly. Furthermore, an 80 kDa reactive protein was detected by Western blotting assays. No significant cross-reactivity was found with anti-human brain calpain antibody. The expression of CALPs was decreased in cells kept for long periods in axenic cultures in comparison to a strain recently isolated from mice, as well as in MDL28170-treated cells, the latter being paralleled by an increased expression of cruzipain. Different levels of CALPs expression were also detected in distinct phylogenetic lineages, like Y strain (lineage TcII), Dm28c (lineage TcI) [corrected] and INPA6147 strain (Z3 zymodeme). These results may contribute for the investigation of the functions of CALPs in trypanosomatids.
dc.description2030-01-01
dc.formatapplication/pdf
dc.languageeng
dc.publisherCambridge University Press
dc.rightsrestricted access
dc.subjectTrypanosoma Cruzi
dc.subjectcalpaína
dc.subjectPeptidase
dc.subjectInibidor
dc.subjectTrypanosoma Cruzi
dc.subjectcalpain
dc.subjectpeptidase
dc.subjectinhibitor
dc.titleArrested growth of Trypanosoma cruzi by the calpain inhibitor MDL28170 and detection of calpain homologues in epimastigote forms
dc.typeArticle


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