Abstract

The aim of this study was to investigate the effect of Schistosoma japonicum glutathione S-transferase (SjGST) on the developmental stages of the parasite. We found that the mRNA levels of GST were higher in schistosomula obtained from the host and the eggs than that in other developmental stages. SjGST was mainly distributed in the egg shells, teguments of the worms, and part of the parenchyma of the worms. GST knockdown with RNA interference in S. japonicum worms resulted in a silencing rate higher than 80%. The egg reduction rate (18%) and abnormal egg ratio (28%) were significantly higher (P < 0.05) in the GST-silenced group than in the negative control group. These results indicate that SjGST plays an important role in the fecundity of S. japonicum, specifically in egg formation.

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