Project description:Dysregulation of CD4+ T cell populations leads to intestinal inflammation, but the regional differences of these T cell populations remained unclear in the healthy population. We first used flow cytometry to show that Th17 and Th22 cells are specifically enriched in the human cecum, while Th1 and Th2 cells do not differ regionally. We subsequently performed transcriptional profiling and found that Th17 was positively associated with the expression of RETN and negatively associated with TFF1, suggesting that the differential enrichment of Th17 cells in the healthy human cecum was underlined by the metabolic differences in this environment. Transcriptional profiling with microarray on human intestinal pinch biopsies obtained from different sites of the healthy colon.
Project description:Dysregulation of CD4+ T cell populations leads to intestinal inflammation, but the regional differences of these T cell populations remained unclear in the healthy population. We first used flow cytometry to show that Th17 and Th22 cells are specifically enriched in the human cecum, while Th1 and Th2 cells do not differ regionally. We subsequently performed transcriptional profiling and found that Th17 was positively associated with the expression of RETN and negatively associated with TFF1, suggesting that the differential enrichment of Th17 cells in the healthy human cecum was underlined by the metabolic differences in this environment.
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 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: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:In this study, the participation of fetal factors in maintaining the immune balance during gestation was investigated by assessing the effects of human chorionic gonadotropin (hCG) on murine Treg cells and Th17 cells.
Project description:Th subsets are defined according to their production of lineage-indicating cytokines and functions. In this study, we have identified a subset of human Th cells that infiltrates the epidermis in individuals with inflammatory skin disorders and is characterized by the secretion of IL-22 and TNF-a, but not IFN-g, IL-4, or IL-17. In analogy to the Th17 subset, cells with this cytokine profile have been named the Th22 subset. Th22 clones derived from patients with psoriasis were stable in culture and exhibited a transcriptome profile clearly separate from those of Th1, Th2, and Th17 cells; it included genes encoding proteins involved in tissue remodeling, such as FGFs, and chemokines involved in angiogenesis and fibrosis. Primary human keratinocytes exposed to Th22 supernatants expressed a transcriptome response profile that included genes involved in innate immune pathways and the induction and modulation of adaptive immunity. These proinflammatory Th22 responses were synergistically dependent on IL-22 and TNF-a. Furthermore, Th22 supernatants enhanced wound healing in an in vitro injury model, which was exclusively dependent on IL-22. In conclusion, the human Th22 subset may represent a separate T cell subset with a distinct identity with respect to gene expression and function, present within the epidermal layer in inflammatory skin diseases. Future strategies directed against the Th22 subset may be of value in chronic inflammatory skin disorders.