Project description:Stem cells of the gastrointestinal tract, pancreas, liver, and other columnar epithelia collectively resist cloning in their elemental states. Here we demonstrate the cloning and propagation of highly clonogenic, “ground state” stem cells of the human intestinal and colon. To assess the genomic stability of our intestinal stem cells, we serially passaged five independent intestinal stem cell pedigrees derived from the ileum of one late fetal demise case and tested them after 50 (passage 5; P5) and 250 days (P25) of continuous proliferation. DNA from cells at these passages cells was analyzed by SNP array based copy number variation analysis (CNV). Although at P25, there are aneuploidy in some of pedigrees, there are very few CNV at P5 in all pedigrees.
Project description:Stem cells of the gastrointestinal tract, pancreas, liver, and other columnar epithelia collectively resist cloning in their elemental states. Here we demonstrate the cloning and propagation of highly clonogenic, “ground state” stem cells of the human intestinal and colon. To assess the genomic stability of our intestinal stem cells, we serially passaged two independent intestinal stem cell pedigrees derived from the ileum of one late fetal demise case and tested them after 50 (passage 5; P5), 100 (P10), 150 (P15) and 200 days (P20) of continuous proliferation. DNA from cells at these passages cells was analyzed by SNP array based copy number variation analysis (CNV). Although at P15 and P20, partial aneuploidy in some of pedigrees was observed, there are almost no CNVs at P5 and P10 in both pedigrees.
Project description:Gene expression profiling of immortalized human mesenchymal stem cells with hTERT/E6/E7 transfected MSCs. hTERT may change gene expression in MSCs. Goal was to determine the gene expressions of immortalized MSCs.
Project description:Transcriptional profiling of human mesenchymal stem cells comparing normoxic MSCs cells with hypoxic MSCs cells. Hypoxia may inhibit senescence of MSCs during expansion. Goal was to determine the effects of hypoxia on global MSCs gene expression.
Project description:Gene expression profiling of immortalized human mesenchymal stem cells with hTERT/E6/E7 transfected MSCs. hTERT may change gene expression in MSCs. Goal was to determine the gene expressions of immortalized MSCs. One-condition experment, gene expression of 3A6
Project description:Gene methylation profiling of immortalized human mesenchymal stem cells comparing HPV E6/E7-transfected MSCs cells with human telomerase reverse transcriptase (hTERT)- and HPV E6/E7-transfected MSCs. hTERT may increase gene methylation in MSCs. Goal was to determine the effects of different transfected genes on global gene methylation in MSCs.
Project description:Transcriptional profiling of human mesenchymal stem cells comparing normoxic MSCs cells with hypoxic MSCs cells. Hypoxia may inhibit senescence of MSCs during expansion. Goal was to determine the effects of hypoxia on global MSCs gene expression. Two-condition experiment, Normoxic MSCs vs. Hypoxic MSCs.
