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Comparison of Secretome Profile of Pathogenic and Non-Pathogenic Entamoeba histolytica

 Chun-Seob Ahn  ;  Jeong-Geun Kim  ;  Myeong Heon Shin  ;  Young Ah Lee  ;  Yoon Kong 
 PROTEOMICS, Vol.18(7) : e1700341, 2018 
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Entamoeba histolytica ; carbohydrate metabolizing enzyme ; detoxifying protein ; pathogenic and non-pathogenic strain ; secretome
The obligatory intracellular protozoan parasite Entamoeba histolytica causes amebic dysentery and liver abscess. E. histolytica adheres to the host tissues in a contact-dependent manner. E. histolytica excretory-secretory products (ESP) might play critical roles during invasion. We comparatively analyzed the secretome profile of E. histolytica pathogenic HM-1:IMSS and non-pathogenic Rahman strains. The two ESP revealed similar but distinct spotting patterns. In both ESP, alcohol dehydrogenase, enolase 1, and transketolase, which control classical carbohydrate metabolism and other moonlighting effects, constituted the most abundant fractions. We recognized differently secreted molecules. Secretion of cytoskeletal organization proteins (actin, actin binding protein, and EHI_068510), protein remodeling amino peptidase, and multifunctional elongation factor 1-alpha were increased in Rahman. Conversely, carbohydrate metabolizing enolase 1, alcohol dehydrogenase, transketolase, calponin, phosphoglucose mutase, malic enzyme and EHI_156420, xenobiotic scavenging superoxide dismutase and EHI_140740, and pyruvate:ferredoxin oxidoreductase and coronin (carbohydrate metabolism/detoxification) showed reduced secretion. Transcription levels of some genes involved in these processes also decreased. Changes of secretory behavior, especially decreased secretion of multifunctional carbohydrate metabolizing enzymes and detoxifying proteins that importantly participated in amoeba pathogenesis might reflect avirulent nature of Rahman strain in the host.
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1. College of Medicine (의과대학) > Dept. of Environmental Medical Biology (환경의생물학교실) > 1. Journal Papers
Yonsei Authors
Shin, Myeong Heon(신명헌) ORCID logo https://orcid.org/0000-0001-8207-6110
Lee, Young Ah(이영아) ORCID logo https://orcid.org/0000-0002-0414-842X
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