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Injured pancreatic tissue extract contains transcription proteins that are considered as specific soluble proteins, which contribute in promoting the trans-differentiation of stem cells into insulin-producing cells (IPCs). In this present study, 60% of the pancreatic tissues of Sprague-Dawley (SD) rats were removed, and newborn and normal pancreatic tissues were removed after 48 h to extract tissue fluid. Two-dimensional gel electrophoresis (2-DE) separation and spot analysis were conducted on differentially expressed proteins, and peptides were obtained after enzymatic digestion. Twenty two-fold or above differentially expressed proteins were identified via matrix-assisted laser desorption time-of-flight mass spectrometry (MALDI-TOF/MS), among which, five proteins were related to pancreatic development and differentiation. Moreover, the expression patterns of four proteins detected with Western blot analysis were in agreement with those detected via 2-DE. Our results and those of the bioinformatics analysis suggest that these novel proteins from injured rat pancreatic extract can be a potential source for stem cell differentiation into IPCs.
Citation :Xie H, Zhang H, Qi H, Wang Y, Deng CY, et al. (2013) Discovery of Novel Proteins form Injured Rat Pancreatic Extract using MALDI-TOF/MS-based Proteomics. J Proteomics Bioinform 6:158-163. doi: 10.4172/jpb.100027
More related research article : Journal of Proteomics & Bioinformatics
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