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Proteomic analysis of human bone marrow mesenchymal stem cells transduced with human telomerase reverse transcriptase gene during proliferation.


ABSTRACT: OBJECTIVES:Previous studies have reported immortalization and tumorigenicity of human mesenchymal stem cells (hMSCs) transduced with exogenous human telomerase reverse transcriptase (hTERT). We also have established a line of hMSCs transduced with hTERT (hTERT-hMSCs) and we have cultured these cells for 290 population doublings (PDs) during which they demonstrated a large proliferation potential but with no tumorigenicity. The aim of this study was to investigate the protein expression profile of hTERT-hMSCs with two-dimensional gel electrophoresis and peptide mass fingerprinting by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, to be able to analyse the effects of exogenous hTERT on protein expression in hMSCs. MATERIALS AND METHODS:We generated proteome maps of primary hMSCs and hTERT-hMSCs at PD 95 and PD 275. RESULTS:A total of 1543 +/- 145 protein spots in gels of primary MSCs at PD 12, 1611 +/- 186 protein spots in gels of hTERT-hMSCs at PD 95 and 1451 +/- 126 protein spots in gels of hTERT-hMSCs at 275 PD were detected. One hundred of these were successfully identified, including 20 which were differentially expressed. CONCLUSIONS:The results suggest that sustaining levels of prohibitin and p53 expression along with differential expression of proteins in hTERT-hMSCs provide an insight into lack of transforming activity of hTERT-hMSCs during cell proliferation.

SUBMITTER: Huang GP 

PROVIDER: S-EPMC6495906 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature

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Proteomic analysis of human bone marrow mesenchymal stem cells transduced with human telomerase reverse transcriptase gene during proliferation.

Huang G P GP   Pan Z J ZJ   Huang J P JP   Yang J F JF   Guo C J CJ   Wang Y G YG   Zheng Q Q   Chen R R   Xu Y L YL   Wang G Z GZ   Xi Y M YM   Shen D D   Jin J J   Wang J F JF  

Cell proliferation 20080619 4


<h4>Objectives</h4>Previous studies have reported immortalization and tumorigenicity of human mesenchymal stem cells (hMSCs) transduced with exogenous human telomerase reverse transcriptase (hTERT). We also have established a line of hMSCs transduced with hTERT (hTERT-hMSCs) and we have cultured these cells for 290 population doublings (PDs) during which they demonstrated a large proliferation potential but with no tumorigenicity. The aim of this study was to investigate the protein expression p  ...[more]

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2020-03-31 | GSE112297 | GEO