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Park EC, Lee SY, Yun SH, Choi CW, Lee H, Song HS, Jun S, Kim GH, Lee CS, Kim SI. Clinical proteomic analysis of scrub typhus infection. Clin Proteomics 2018; 15:6. [PMID: 29449793 PMCID: PMC5812041 DOI: 10.1186/s12014-018-9181-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 01/23/2018] [Indexed: 12/14/2022] Open
Abstract
Background
Scrub typhus is an acute and febrile infectious disease caused by the Gram-negative α-proteobacterium Orientia tsutsugamushi from the family Rickettsiaceae that is widely distributed in Northern, Southern and Eastern Asia. In the present study, we analysed the serum proteome of scrub typhus patients to investigate specific clinical protein patterns in an attempt to explain pathophysiology and discover potential biomarkers of infection. Methods Serum samples were collected from three patients (before and after treatment with antibiotics) and three healthy subjects. One-dimensional sodium dodecyl sulphate–polyacrylamide gel electrophoresis followed by liquid chromatography-tandem mass spectrometry was performed to identify differentially abundant proteins using quantitative proteomic approaches. Bioinformatic analysis was then performed using Ingenuity Pathway Analysis. Results Proteomic analysis identified 236 serum proteins, of which 32 were differentially expressed in normal subjects, naive scrub typhus patients and patients treated with antibiotics. Comparative bioinformatic analysis of the identified proteins revealed up-regulation of proteins involved in immune responses, especially complement system, following infection with O. tsutsugamushi, and normal expression was largely rescued by antibiotic treatment. Conclusions This is the first proteomic study of clinical serum samples from scrub typhus patients. Proteomic analysis identified changes in protein expression upon infection with O. tsutsugamushi and following antibiotic treatment. Our results provide valuable information for further investigation of scrub typhus therapy and diagnosis. Electronic supplementary material The online version of this article (10.1186/s12014-018-9181-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Edmond Changkyun Park
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea.,2Center for Convergent Research of Emerging Virus Infection, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114 Republic of Korea.,3Department of Bio-Analytical Science, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
| | - Sang-Yeop Lee
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea.,2Center for Convergent Research of Emerging Virus Infection, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114 Republic of Korea
| | - Sung Ho Yun
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea
| | - Chi-Won Choi
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea.,4Division of Life Science, Tunneling Nanotube Research Center, Korea University, Seoul, 02841 Republic of Korea
| | - Hayoung Lee
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea.,3Department of Bio-Analytical Science, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
| | - Hyun Seok Song
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea.,2Center for Convergent Research of Emerging Virus Infection, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114 Republic of Korea.,3Department of Bio-Analytical Science, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
| | - Sangmi Jun
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea.,2Center for Convergent Research of Emerging Virus Infection, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114 Republic of Korea.,3Department of Bio-Analytical Science, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
| | - Gun-Hwa Kim
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea.,3Department of Bio-Analytical Science, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea.,4Division of Life Science, Tunneling Nanotube Research Center, Korea University, Seoul, 02841 Republic of Korea
| | - Chang-Seop Lee
- 5Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, 54986 Republic of Korea.,6Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, 54907 Republic of Korea
| | - Seung Il Kim
- 1Drug & Disease Target Team, Korea Basic Science Institute (KBSI), Cheongju, 28119 Republic of Korea.,2Center for Convergent Research of Emerging Virus Infection, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114 Republic of Korea.,3Department of Bio-Analytical Science, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
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Shotgun proteomic analysis on the diapause and non-diapause eggs of domesticated silkworm Bombyx mori. PLoS One 2013; 8:e60386. [PMID: 23580252 PMCID: PMC3620277 DOI: 10.1371/journal.pone.0060386] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 02/27/2013] [Indexed: 12/31/2022] Open
Abstract
To clarify the molecular mechanisms of silkworm diapause, it is necessary to investigate the molecular basis at protein level. Here, the spectra of peptides digested from silkworm diapause and non-diapause eggs were obtained from liquid chromatography tandem mass spectrometry (LC-MS/MS) and were analyzed by bioinformatics methods. A total of 501 and 562 proteins were identified from the diapause and non-diapause eggs respectively, of which 309 proteins were shared commonly. Among these common-expressed proteins, three main storage proteins (vitellogenin precursor, egg-specific protein and low molecular lipoprotein 30 K precursor), nine heat shock proteins (HSP19.9, 20.1, 20.4, 20.8, 21.4, 23.7, 70, 90-kDa heat shock protein and heat shock cognate protein), 37 metabolic enzymes, 22 ribosomal proteins were identified. There were 192 and 253 unique proteins identified in the diapause and non-diapause eggs respectively, of which 24 and 48 had functional annotations, these unique proteins indicated that the metabolism, translation of the mRNA and synthesis of proteins were potentially more highly represented in the non-dipause eggs than that in the diapause eggs. The relative mRNA levels of four identified proteins in the two kinds of eggs were also compared using quantitative reverse transcription PCR (qRT-PCR) and showed some inconsistencies with protein expression. GO signatures of 486 out of the 502 and 545 out of the 562 proteins identified in the diapause and non-diapause eggs respectively were available. In addition, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed the Metabolism, Translation and Transcription pathway were potentially more active in the non-dipause eggs at this stage.
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