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Both the proteins, particularly LdTCP20 for the first time, were successfully cloned, overexpressed, purified and were found to be localized in the cytosol of purified splenic amastigotes. When evaluated against lymphocytes of cured<jats:italic>Leishmania<\/jats:italic>-infected hamsters, the purified recombinant proteins (rLdcTryP and rLdTCP20) induced their proliferations as well as nitric oxide production. Similarly, these proteins also generated Th1-type cytokines (IFN-\u03b3\/IL-12) from stimulated PBMCs of cured\/endemic<jats:italic>Leishmania<\/jats:italic>patients. Further, vaccination with rLdcTryP elicited noticeable delayed-type hypersensitivity response and offered considerably good prophylactic efficacy (~78% inhibition) against<jats:italic>L. donovani<\/jats:italic>challenge in hamsters, which was well supported by the increased mRNA expression of Th1 and Th2 cytokines. However, animals vaccinated with rLdTCP20 exhibited comparatively lesser prophylactic efficacy (~55%) with inferior immunological response. The results indicate the potentiality of rLdcTryP protein, between the two, as a suitable anti-leishmanial vaccine. Since, rLdTCP20 is also an important target, for optimization, further attempts towards determination of immunodominant regions for designing fusion peptides may be taken up.<\/jats:p>","DOI":"10.1017\/s003118201400184x","type":"journal-article","created":{"date-parts":[[2014,12,11]],"date-time":"2014-12-11T10:26:58Z","timestamp":1418293618000},"page":"728-744","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":7,"title":["Immunological consequences of stress-related proteins \u2013 cytosolic tryparedoxin peroxidase and chaperonin TCP20 \u2013 identified in splenic amastigotes of<i>Leishmania donovani<\/i>as Th1 stimulatory, in experimental visceral leishmaniasis"],"prefix":"10.1017","volume":"142","author":[{"given":"ANIL 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