Liu, Mu Ju, Chuan Du, Xiao-Feng Shen, Hai-Mo Wang, Ji-Peng Li, Jian Zhang, Xu-Min Feng, Zheng Hu, Wei Proteomic Analysis on Cercariae and Schistosomula in Reference to Potential Proteases Involved in Host Invasion of <i>Schistosoma japonicum</i> Larvae Schistosomiasis is a parasitic zoonosis posing great threat to human health. The infection is acquired by larval cercariae penetrating host skin and transforming into juveniles, schistosomula. Proteolytic enzymes secreted from the cercarial acetabular glands are known to aid to the skin penetration, but molecular mechanisms remain largely unclear. To profile the protein composition and identify potential invasive proteases, we developed a new method for simulating cercarial transformation and collecting schistosomula, and for the first time, we compared the proteomes of <i>Schistosoma japonicum</i> cercariae and schistosomula by using in-gel shotgun proteomic analysis. Totally, 1972 proteins were identified in association with ten main biological processes based on Gene Ontology analysis; 46 proteases were detected in cercariae, and among them, 25 proteases disappeared after penetrated. Notably, leishmanolysins and serine and cysteine proteases were found abundant but differentially expressed. Recombinant serine protease SjCE2b and cysteine protease SjCB2 were produced and used for validation of native proteins. Immunofluorescence and Western blotting assays detected SjCE2b and SjCB2 in cercariae but not in schistosomula, suggesting the two enzymes might be consumed upon skin migration. Our data comprehensively chart the proteomic changes during cercarial invasion, revealing the potential proteases involved, providing a platform for the development of molecular anti-infection strategy. Host Invasion;simulating cercarial transformation;46 proteases;25 proteases;Schistosoma japonicum LarvaeSchistosomiasis;SjCE 2b;1972 proteins;skin migration;Proteolytic enzymes;Recombinant serine protease SjCE 2b;Proteomic Analysis;Potential Proteases;cercarial invasion;SjCB 2;cysteine proteases;skin penetration;Schistosoma japonicum cercariae;Gene Ontology analysis;cercarial acetabular glands;protein composition;cysteine protease SjCB 2;schistosomula;host skin;proteomic changes 2015-11-06
    https://acs.figshare.com/articles/dataset/Proteomic_Analysis_on_Cercariae_and_Schistosomula_in_Reference_to_Potential_Proteases_Involved_in_Host_Invasion_of_i_Schistosoma_japonicum_i_Larvae/2112751
10.1021/acs.jproteome.5b00465.s002