黏液型與非黏液型銅綠假單胞菌的比較蛋白組學分析
[Abstract]:Objective to investigate the differential protein profiles of mucinous and non-mucous Pseudomonas aeruginosa (Pseudomonas aeruginosa,P.a) and to identify potential biomarkers of mucinous P.a. Methods three myxotypic P.A strains isolated from patients with clinical cystic fibrosis were used to identify their homology by pulsed field gel electrophoresis. Two dimensional liquid Chromatography tandem Mass Spectrometry (two-dimensional liquid chromatography-tandem mass spectrometry,) with Isotope relative and absolute quantitative labeling (isobaric tags for relative and absolute quantitation,i TRAQ 2D LC-MS/MS) technique was used to analyze the differential protein profiles of three strains of mucus type and one strain of non-mucus type P.A in control group. Five common differentially expressed proteins were verified by RT-q PCR method. Results there was no significant difference in, i TRAQ results among 3 mucinous P.A strains without homology. There were 219 up-regulated and 101 down-regulated differentially expressed proteins in the three groups. The transcription levels of pa2815,pa2018,dnak,pa5046 and acef genes were consistent with those of I TRAQ. Conclusion there is no significant difference in I TRAQ results among different mucotypic phenotypes. 219 up-regulated and 101 down-regulated differentially expressed proteins can be used as candidate biomarkers for studying the pathogenetic mechanism of mucinous and non-mucinous P.A.
【作者單位】: 廣東醫(yī)科大學附屬醫(yī)院檢驗科;深圳市疾病預防控制中心毒理實驗室;廣東醫(yī)科大學附屬醫(yī)院臨床研究中心;
【基金】:國家自然科學基金青年科學基金(81301478) 廣東省湛江市非資助科技計劃項目(2015B01042) 廣東省醫(yī)學科學技術研究基金項目(B2017055)~~
【分類號】:R446.5
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