Suppression of Adaptive Immunity to Heterologous Antigens by SJ16 of Schistosoma japonicum

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Abstract
Despite the great effort that has been given to control the disease, schistosomiasis remains the most important human helminth infection in terms of morbidity and mortality. Natural infection of schistosomes induces very little protective immunity against reinfection. Moreover, effective schistosome vaccines for practical use have not been developed. These parasites appear to have evolved highly effective modulatory mechanisms on their host's immune system that promote the parasites' survival and also hinder the development of effective strategies for treatment of the disease. Understanding of the mechanisms of schistosome-mediated immune modulation would be most helpful in schistosomiasis prevention and control. Previously, we have identified from Schistosoma japonicum an anti-inflammatory protein, Sj16, which suppresses thioglycollate-induced peritoneal inflammation in BALB/c mice, as well as thioglycollate-mediated peritoneal macrophage maturation, while modulating cytokine and chemokine prod...

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