14-3-3 protein and ubiquitin C acting as SjIAP interaction partners facilitate tegumental integrity in Schistosoma japonicum

International Journal for Parasitology
Juntao LiuGuofeng Cheng

Abstract

Schistosomiasis, caused by trematodes of the genus Schistosoma, remains an important public health issue. Adult schistosomes can survive in the definitive host for several decades, although they are subject to the host immune response. Consequently, understanding the mechanism underlying worm survival in the definitive hosts could aid in developing novel strategies against schistosomiasis. We previously found that an inhibitor of apoptosis in Schistosoma japonicum (SjIAP) could negatively regulate apoptosis by inhibiting caspase activity, which plays a critical role in maintaining tegument integrity. The current study aimed to further analyze the mechanism related to SjIAP governing worm tegument integrity; therefore, we used a yeast two-hybrid screen and identified a series of putative interacting partners of SjIAP, including 14-3-3 (Sj14-3-3) and ubiquitin C (SjUBC). Quantitative real time PCR (qRT-PCR) analysis indicated that transcript profiles of Sj14-3-3 and SjUBC increased together with worm development in definitive hosts, which corresponds to those of SjIAP in S. japonicum. Immunohistochemical analysis showed Sj14-3-3 and SjUBC were located in the tegument of adult parasites while they were also ubiquitously distribute...Continue Reading

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