Publication: Proteomic and immunomic analysis of Schistosoma mekongi egg proteins
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Issued Date
2018-08-01
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ISSN
10902449
00144894
00144894
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2-s2.0-85051066553
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Mahidol University
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SCOPUS
Bibliographic Citation
Experimental Parasitology. Vol.191, (2018), 88-96
Suggested Citation
Tipparat Thiangtrongjit, Poom Adisakwattana, Yanin Limpanont, Paron Dekumyoy, Supaporn Nuamtanong, Phiraphol Chusongsang, Yupa Chusongsang, Onrapak Reamtong Proteomic and immunomic analysis of Schistosoma mekongi egg proteins. Experimental Parasitology. Vol.191, (2018), 88-96. doi:10.1016/j.exppara.2018.07.002 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/45991
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Title
Proteomic and immunomic analysis of Schistosoma mekongi egg proteins
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Abstract
© 2018 The Authors Schistosomiasis remains a global health problem. In the Mekong river basin, approximately 80,000 people are at risk of infection by Schistosoma mekongi. The parasite's eggs become entrapped in the host's organs and induce massive inflammation, contributing to the pathogenesis of schistosomiasis. In addition, egg antigens are important in circumoval precipitin tests (COPTs) and other diagnostic techniques. Little is known regarding the egg proteins of S. mekongi, and so we applied immunoblotting and mass spectrometry-based proteomic approaches to study these proteins and their antigenicity. A total of 360 unique proteins were identified in S. mekongi eggs using proteomic analyses. The major protein components of S. mekongi eggs were classified into several groups by functions, including proteins of unknown function, structural proteins, and regulators of transcription and translation. The most abundant proteins in S. mekongi eggs were antioxidant proteins, potentially reflecting the need to neutralize reactive oxidative species released from host immune cells. Immunomic analyses revealed that only DNA replication factor Cdt1 and heat shock protein 70 overlap between the proteins recognized by sera of infected mice and humans, illustrating the challenges of knowledge transfer from animal models to human patients. Forty-one immunoreactive protein bands were recognized by either mouse or patient sera. Phosphoglycerate kinase, fructose-1,6-bisphosphate aldolase and elongation factor 1 appeared to be interesting immunogens of S. mekongi eggs as these proteins were recognized by polyclonal IgMs and IgGs in patient sera. Our findings provide new information on the protein composition of S. mekongi eggs as well as the beginnings of a S. mekongi immunogen dataset. These data may help us better understand the pathology of schistosomiasis as well as natural antibody responses against S. mekongi egg proteins, both of which may be useful in including S. mekongi to other schistosoma diagnostic, vaccine and immunotherapy development.