Project description:We identified a number of affected pathways through transcriptome analysis on the skin biopsy samples of the FPPK patients. Our findings suggest that TRPV3 dysfunction may increase apoptotic activity, inhibit keratinocyte differentiation and disturb the intricate balance between proliferation and differentiation state of keratinocytes in the skin. To understand the effect of TRPV3 mutation, transcriptome of HaCaT cell lines transfected with mutant TRPV3 were profiled in time-course manner (16, 24 and 40hr).
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: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:We identified a number of affected pathways through transcriptome analysis on the skin biopsy samples of the FPPK patients. Our findings suggest that TRPV3 dysfunction may increase apoptotic activity, inhibit keratinocyte differentiation and disturb the intricate balance between proliferation and differentiation state of keratinocytes in the skin. To understand the effect of TRPV3 mutation, transcriptome of 293T cell lines transfected with mutant TRPV3 were profiled in time-course manner (16, 24 and 40hr).
Project description:Gene expression signatures in the skin of focal palmoplantar keratoderma (FPPK) patients, and cell lines transfected with mutant TRPV3
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. Two-condition experiment, KP MSCs vs. 3A6 MSCs.
Project description:Aberrant activation of signaling pathways controlled in normal epithelial cells by the epidermal growth factor receptor (EGFR) has been linked to cetuximab (a monoclonal antibody against EGFR) resistance in head and neck squamous cell carcinoma (HNSCC). To infer relevant and specific pathway activation downstream of EGFR from gene expression in HNSCC, we generated gene expression signatures using immortalized keratinocytes (HaCaT) subjected to either ligand stimulation or pharmacological inhibition of the signaling intermediaries PI-3-Kinase and MEK or transfected with EGFR, RELA/p65, or HRASVal12. The gene expression patterns that distinguished the various HaCaT variants and conditions were inferred using the Markov chain Monte Carlo (MCMC) matrix factorization algorithm Coordinated Gene Activity in Pattern Sets (CoGAPS). This approach inferred gene expression signatures with greater relevance to cell signaling pathway activation than the expression signatures inferred with standard linear models. Furthermore, the pathway signature generated using HaCaT-HRASVal12 further associated with the cetuximab treatment response in isogenic cetuximab-sensitive (UMSCC1) and -resistant (1CC8) cell lines. Our data suggest that the CoGAPS algorithm can generate gene expression signatures that are pertinent to downstream effects of receptor signaling pathway activation and potentially be useful in modeling resistance mechanisms to targeted therapies. 58 total RNA collected from HaCaT cell lines with combinations of the following experimental conditions: forced expression of EGFR, RELA/p65, and HRAS-VAL12D; grown in PBS, serum starve, and media stimulated with TNF or EGF; treated with gefitinib, LY294002, and U1026.
Project description:To understand the impact of dysfunctional TRPV3 on keratinocyte proliferation and differentiation, we conducted transcriptomic analysis on cells that express cloned different TRPV3 mutations identified in focal palmoplantar keratoderma (FPPK) patients and identified a number of perturbed pathways associated with epidermal cells construction and development. We also analyzed the molecular changes of skin biopsy samples from patients. Our data suggests that TRPV3 dysfunction inhibits keratinocyte differentiation, actives apoptosis pathway resulted in cell death, and disturbs the balance between keratinocyte proliferation and differentiation processes in the skin. To explore the functional impact of the different TRPV3 mutations on cells, we cloned the wild type and mutant TRPV3 clones into expression vector. The wild-type human TRPV3 gene was amplified from cDNA made from a mixture of human tissue total RNA and cloned into pcDNA3.1 (Life Technologies, Carlsbad, CA). The accuracy of the cloned sequence was checked with Sanger sequencing. Quick Change II XL site-directed mutagenesis kit (Agilent, Santa Clara, CA) was used to introduce sequence changes corresponding to mutations observed in patients. The HEK293T cells were transfected using Lipofectamine 2000 (Life Technologies, Carlsbad, CA) according to the manufacturerâs instructions. Cells were also transfected with the same plasmid without insert as control.