alexa Proteomics-based Development of Biomarkers for Prion Diseases
ISSN: 0974-276X

Journal of Proteomics & Bioinformatics
Open Access

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Research Article

Proteomics-based Development of Biomarkers for Prion Diseases

Bo-Yeong Choi, Yeong Seon Lee, Young Ran Ju, Chi-Kyeong Kim and Su Yeon Kim*

Division of Zoonoses, Center for Immunology and Pathology, Korea National Institute of Health, Centers for Disease Control and Prevention, Cheongju-si, Chungcheongbukdo, 28159, Republic of Korea

*Corresponding Author:
Su Yeon Kim
Division of Zoonoses, Center for Immunology and
Pathology, Korea National Institute of Health
Centers for Disease Control and Prevention, Cheongju-si
Chungcheongbuk-do, 28159, Republic of Korea
Tel: +82 43 719 8463
Fax: +82 43 719 8489
E-mail: [email protected]

Received Date: November 28, 2015; Accepted Date: March 15, 2016; Published Date: March 23, 2016

Citation: Bo-Yeong C, Lee YS, Ju YR, Chi-Kyeong K, Kim SY (2016) Proteomics-based Development of Biomarkers for Prion Diseases. J Proteomics Bioinform 9:087-100. doi:10.4172/jpb.1000394

Copyright: © 2016 Bo-Yeong C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



We analyzed the proteomic profile of ME7 scrapie-infected mouse brains, and the interactions and functions of selected differentially expressed proteins to identify potential new biomarkers to be applicable for the diagnosis of Prion diseases. Mice were intracerebrally inoculated with 10% homogenate of ME7 scrapie-infected mouse brains, and monitored for neurological symptoms. We screened for proteins specifically expressed in infected brain samples using one-dimensional gel electrophoresis and liquid chromatography-mass spectrometry. 317 proteins based on their peptide scores and ratio values were selected. The major biological processes identified were cellular and metabolic processes, localization, and transport. Selected proteins had functions related to neurological processes, including cell-cell signaling, transmission of nerve impulse, and synaptic transmission. We analyzed infected host cells using experimental and computational methods, and found many significant protein expression changes. We identified 43 candidate proteins with high peptide scores and ratio values. Of these, 36 potential candidate proteins were related to up regulated biological processes, and 7 to down regulated biological processes. We confirmed the presence of two of these differentially expressed candidate proteins using immunoblotting.


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