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Proteomic identification of differently expressed proteins responsible for osteoblast differentiation from human mesenchymal stem cells
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Proteomic identification of differently expressed proteins responsible for osteoblast differentiation from human mesenchymal stem cells
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Proteomic identification of differently expressed proteins responsible for osteoblast differentiation from human mesenchymal stem cells
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Journal Article
Proteomic identification of differently expressed proteins responsible for osteoblast differentiation from human mesenchymal stem cells
2007
Overview
Human mesenchymal stem cells (hMSC) are a population of multipotent cells that can differentiate into osteoblasts, chondrocytes, adipocytes, and other cells. The exact mechanism governing the differentiation of hMSC into osteoblasts remains largely unknown. Here, we analyzed protein expression profiles of undifferentiated as well as osteogenic induced hMSC using 2-D gel electrophoresis (2-DE), mass spectrometry (MS), and peptide mass fingerprinting (PMF) to investigate the early gene expression in osteoblast differentiation. We have generated proteome maps of undifferentiated hMSC and osteogenic induced hMSC on day 3 and day 7. 2-DE revealed 102 spots with at least 2.0-fold changes in expression and 52 differently expressed proteins were successfully identified by MALDI-TOF-MS. These proteins were classified into 7 functional categories: metabolism, signal transduction, transcription, calcium-binding protein, protein degradation, protein folding and others. The expression of some identified proteins was confirmed by further RT-PCR analyses. This study clarifies the global proteome during osteoblast differentiation. Our results will play an important role in better elucidating the underlying molecular mechanism in hMSC differentiation into osteoblasts.
Publisher
Boston : Springer US,Springer Nature B.V
Subject
