The genome wide dynamic profiling of chromatin accessibility in early osteogenic differentiation of human mesenchymal stem cells(MSCs)has not been reported.In this study,the sixth generation primary cultured human MSC...The genome wide dynamic profiling of chromatin accessibility in early osteogenic differentiation of human mesenchymal stem cells(MSCs)has not been reported.In this study,the sixth generation primary cultured human MSCs were treated with osteogenic inducer for 0 day,3 days,5 days and 7 days,respectively,and then harvested for assay for transposase accessible chromatin using sequencing(ATAC seq).The numbers of chromatin accessibility,the specific activated DNA motifs in chromatin accessibility regions and the functional enrichment analysis of peak adjacent genes were analyzed by bioinformatics.展开更多
Glucagon-like peptide-1 (GLP-1) is a 30-amino acid peptide hormone, which has the regulatory function of stimulating the secretion of insulin to balance blood glucose levels. In this study, marker-free expression vect...Glucagon-like peptide-1 (GLP-1) is a 30-amino acid peptide hormone, which has the regulatory function of stimulating the secretion of insulin to balance blood glucose levels. In this study, marker-free expression vector pX6 with a fusion gene of ten tandem repeated GLP-1 analog ([Ser8, Gln26 and Asp34]-GLP-1) genes was constructed and transformed into cucumbers by Agrobacterium tumefaciens-mediated transformation method. Four transgenic lines were obtained by PCR and Southern blotting analysis and two transgenic lines successfully expressed the fusion protein (named GLP-T), which was revealed by Western blotting analysis. The biological activity test results showed that the serum glucose level of diabetic rats was significantly decreased after oral administration of the fusion protein GLP-T extracted from the transgenic cucumber fruitage. These results suggest that this may provide a brand-new strategy to prevent and cure the diabetes with no pain.展开更多
文摘The genome wide dynamic profiling of chromatin accessibility in early osteogenic differentiation of human mesenchymal stem cells(MSCs)has not been reported.In this study,the sixth generation primary cultured human MSCs were treated with osteogenic inducer for 0 day,3 days,5 days and 7 days,respectively,and then harvested for assay for transposase accessible chromatin using sequencing(ATAC seq).The numbers of chromatin accessibility,the specific activated DNA motifs in chromatin accessibility regions and the functional enrichment analysis of peak adjacent genes were analyzed by bioinformatics.
基金Supported by the Technology Key Project of Tianjin Technology Committee Funds of China (Grant Nos. 06YFGZNC00700, 08ZCKFSH00100)National Hi-Tech Research and Development Program of China (Grant Nos. 2007AA06Z323, 2008AA02Z205)
文摘Glucagon-like peptide-1 (GLP-1) is a 30-amino acid peptide hormone, which has the regulatory function of stimulating the secretion of insulin to balance blood glucose levels. In this study, marker-free expression vector pX6 with a fusion gene of ten tandem repeated GLP-1 analog ([Ser8, Gln26 and Asp34]-GLP-1) genes was constructed and transformed into cucumbers by Agrobacterium tumefaciens-mediated transformation method. Four transgenic lines were obtained by PCR and Southern blotting analysis and two transgenic lines successfully expressed the fusion protein (named GLP-T), which was revealed by Western blotting analysis. The biological activity test results showed that the serum glucose level of diabetic rats was significantly decreased after oral administration of the fusion protein GLP-T extracted from the transgenic cucumber fruitage. These results suggest that this may provide a brand-new strategy to prevent and cure the diabetes with no pain.
