Ornuma Haonon1,2, Rucksak Rucksaken1,2, Porntip Pinlaor2,3, Chawalit Pairojkul2,4, Yaovalux Chamgramol2,4, Kitti Intuyod2,5, Sudarat Onsurathum1,2, Narong Khuntikeo2,6, Somchai Pinlaor1,2. 1. Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand. 2. Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand. 3. Centre for Research and Development in Medical Diagnostic Laboratory, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand. 4. Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand. 5. Biomedical Science Program, Graduate School, Khon Kaen University, Khon Kaen, Thailand. 6. Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.
Abstract
PURPOSE: To discover protein markers in chronic/advanced opisthorchiasis for the early detection of Opisthorchis viverrini (OV)-associated cholangiocarcinoma (CCA). EXPERIMENTAL DESIGN: Liver tissues derived from normal hamsters and those with chronic/advanced opisthorchiasis (n = 5 per group) were subjected to 2DE and LC-MS/MS. Candidate protein expression was confirmed in hamster models and human CCA tissue microarray (TMA) using immunohistochemistry and Western blot. RESULT: Proteomics analysis detected 14-3-3 eta only in infected hamsters, not in uninfected controls. Immunohistochemistry and Western blot analysis confirmed low expression of 14-3-3 eta in normal hamster livers and demonstrated increased expression through time in infected livers. This protein was also observed in parasite organs, especially during the chronic phase of opisthorchiasis. Moreover, increased expression of 14-3-3 eta, relative to normal hamster livers, was observed during the early stage of CCA induced by OV infection and administration of N-nitrosodimethylamine. Immunohistochemical analysis of human TMA revealed that 14-3-3 eta was highly expressed in CCA (84.23%, 187/222 cases) but was not found in hepatocellular carcinoma or healthy liver tissues. CONCLUSIONS AND CLINICAL RELEVANCE: 14-3-3 eta protein has potential as a screening and early diagnostic marker for CCA.
PURPOSE: To discover protein markers in chronic/advanced opisthorchiasis for the early detection of Opisthorchis viverrini (OV)-associated cholangiocarcinoma (CCA). EXPERIMENTAL DESIGN: Liver tissues derived from normal hamsters and those with chronic/advanced opisthorchiasis (n = 5 per group) were subjected to 2DE and LC-MS/MS. Candidate protein expression was confirmed in hamster models and human CCA tissue microarray (TMA) using immunohistochemistry and Western blot. RESULT: Proteomics analysis detected 14-3-3 eta only in infected hamsters, not in uninfected controls. Immunohistochemistry and Western blot analysis confirmed low expression of 14-3-3 eta in normal hamster livers and demonstrated increased expression through time in infected livers. This protein was also observed in parasite organs, especially during the chronic phase of opisthorchiasis. Moreover, increased expression of 14-3-3 eta, relative to normal hamster livers, was observed during the early stage of CCA induced by OV infection and administration of N-nitrosodimethylamine. Immunohistochemical analysis of human TMA revealed that 14-3-3 eta was highly expressed in CCA (84.23%, 187/222 cases) but was not found in hepatocellular carcinoma or healthy liver tissues. CONCLUSIONS AND CLINICAL RELEVANCE: 14-3-3 eta protein has potential as a screening and early diagnostic marker for CCA.
Authors: Alessandra Vidotto; Giovana M Polachini; Marina de Paula-Silva; Sonia M Oliani; Tiago Henrique; Rossana V M López; Patrícia M Cury; Fabio D Nunes; José F Góis-Filho; Marcos B de Carvalho; Andréia M Leopoldino; Eloiza H Tajara Journal: BMC Med Genomics Date: 2018-08-29 Impact factor: 3.063