| Human bone marrow stem cell (BMSC) may be directed to differentiate into multiple cell types, including adipocyte, chondrocyte, osteocyte and photoreceptor, among others. At present, little is known about the features of the BMSC and the protein control mechanism underlying their differentiation into photoreceptor-like cells. In the present study, BMSCs are induced to differentiate into photoreceptor-like cells in an in vitro model simulating the in vivo microenvironment. Up to 32 proteins are identified and differentially expressed through two-dimensional difference gel electrophoresis and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry to establish a differential protein database for photoreceptor-like cells from BMSC-induced differentiation. Western blot analysis further confirms the expression of some of the identified proteins. The present study proposes the total protein expression and possible molecular mechanism during the differentiation of BMSCs into photoreceptor cells. |
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