Project description:Ehf is a transcriptional regulator that is highly expressed and enriched in corneal epithelium. To gain insights into the role of Ehf in the corneal epithelium, we performed siRNA knockdown of Ehf in primary human corneal epithelial cells. Primary human corneal epithelial cells were transfected with siEhf or si controls, plated, and harvested at 72 hr.
Project description:Ehf is a transcriptional regulator that is highly expressed and enriched in corneal epithelium. To gain insights into the role of Ehf in the corneal epithelium, we performed siRNA knockdown of Ehf in primary human corneal epithelial cells.
Project description:The cornea, composed of epithelium, stroma and endothelium, protects the anterior compartment of the eye from damage and allows transmission of light into the eye. While well described morphologically, no studies have investigated the global gene expression changes in the cornea throughout the mouseM-bM-^@M-^Ys life. We characterized the global gene expression profile of mouse cornea from early development through aging, and compared to gene expression in other epithelial tissue, to identify cornea enriched genes, pathways, and transcriptional regulators. We identified Ehf, an ets family transcription factor, as being highly selectively expressed in the corneal epithelium compared to the stroma, and highly expressed in cornea compared to other epithelial tissues. siRNA experiments and Ehf ChIP-Seq on mouse corneal epithelium confirm the role of this factor in promoting epithelial identity and cell differentiation, and suggest it carries out these functions through interactions with other cornea epithelial differentiation factors including Klf4. Whole eye globes were dissected from wild type CB6 mice. Corneal epithelium was isolated by digestion in 50% EMEM/dispase II with 50 mM sorbitol for two hours at 37M-BM-0C. ChIP was performed with an Ehf antibody, and was sequenced with an input control.
Project description:Ets homologous factor (EHF) is an Ets family transcription factor expressed in many epithelial cell types including those lining the respiratory system. Disruption of the airway epithelium is central to many lung diseases, and a network of transcription factors coordinates its normal function. EHF can act as a transcriptional activator or a repressor, though its targets in lung epithelial cells are largely uncharacterized. RNA-seq after EHF depletion or overexpression showed significant alterations in the expression of genes involved in response to wounding. EHF knockdown also targeted genes in pathways of epithelial development and differentiation and locomotory behavior. mRNA profiles from Calu-3 cells treated with negative control (NC) or EHF siRNA, in quintuplicate. mRNA profiles from 3 pcDNA (empty vector control) clones and 3 pcDNA-EHF overexpression A549 clones, 3-4 replicates each.
Project description:The cornea, composed of epithelium, stroma and endothelium, protects the anterior compartment of the eye from damage and allows transmission of light into the eye. While well described morphologically, no studies have investigated the global gene expression changes in the cornea throughout the mouse’s life. We characterized the global gene expression profile of mouse cornea from early development through aging, and compared to gene expression in other epithelial tissue, to identify cornea enriched genes, pathways, and transcriptional regulators. We identified Ehf, an ets family transcription factor, as being highly selectively expressed in the corneal epithelium compared to the stroma, and highly expressed in cornea compared to other epithelial tissues. siRNA experiments and Ehf ChIP-Seq on mouse corneal epithelium confirm the role of this factor in promoting epithelial identity and cell differentiation, and suggest it carries out these functions through interactions with other cornea epithelial differentiation factors including Klf4.
Project description:To understand the gene-regulatory role of H19 in corneal epithelial cells and to explore whether CLIM activation of H19 might account for non-cell proliferation effects of CLIM, we used siRNA to knock down H19 in primary human corneal epithelial cells. Microarray gene expression analysis revealed that 1,249 genes are down regulated 1.5 fold or more by siH19 compared to scramble control, and that 944 genes are up regulated
Project description:Genome-wide analysis of dihydrotestosterone (DHT) induced changes in gene expression in primary and immortalized human corneal epithelial cells. Analysis of regulation of primary and immortalized human corneal epithelial cells by dihydrotestosterone at gene expression level. The hypothesis tested in the present study was that the androgen-eye interaction in ocular surface epithelial cells like corneal cells is influenced by androgens through regulation of the expression of multiple genes. Results provide important information of the differential regulation and comparitive analysis of numerous genes in response to dihydrotestosterone incubation in primary and immortalized human corneal epithelial cells. Total RNA was obtained from primary and immortalized human corneal epithelial cells treated for 5 days with 10 nM dihydrotestosterone (n=3) or vehicle (n=3). The RNA was then used with Illumina HumanHT-12 v3 Expression BeadChips to determine the effect of DHT on gene expression in the primary human corneal cells grown in our laboratory and the immortalized human corneal epithelial cell line developed in Dr. Rheinwald's laboratory [Rheinwald et al. MCB, 22 (14): 5157. (2002)] and charecterized in Dr. Ilene Gibson's laboratory [Gipson et al. IOVS, 44 (6): 2496. (2003)].
Project description:Genome-wide analysis of dihydrotestosterone (DHT) induced changes in gene expression in primary and immortalized human corneal epithelial cells. Analysis of regulation of primary and immortalized human corneal epithelial cells by dihydrotestosterone at gene expression level. The hypothesis tested in the present study was that the androgen-eye interaction in ocular surface epithelial cells like corneal cells is influenced by androgens through regulation of the expression of multiple genes. Results provide important information of the differential regulation and comparitive analysis of numerous genes in response to dihydrotestosterone incubation in primary and immortalized human corneal epithelial cells.
Project description:Pnn depletion in developing mouse corneal epithelium led to disrupted alternative splicing of multiple ESRP-regulated epithelial-type exons. In human corneal epithelial cells (HCET), ESRP1 and PNN displayed close localization in and around nuclear speckles and their physical association in protein complexes was identified. In this study, gene expression profiling was performed to identify PNN- and ESRP1-regulated alternative pre-mRNA splicing in human corneal epithelial cells. Immortalized human corneal epithelial cells harboring doxycycline-inducible shRNA against PNN or ESRP1 were created. Whole transcriptome array analysis on ESRP1 or PNN knockdown HCET cells revealed clear alterations in transcript level and splicing pattern of specific subsets of genes with significant overlaps in their candidate targets. Our data suggest that ESRP1 and PNN modulate alternative splicing of a specific subset of exons, but not general splicing events. ESRP1 and PNN may together participate in the regulation of epithelial-specific splicing program in a genome-wide fashion. Parental HCET, shRNA-PNN HCET, and shRNA-ESRP1 HCET cells were cultured for 3 days with/without doxycycline. Total RNA was isolated from four biological replicates of each sample group and then subjected to hGlue3_0 transcriptome array analysis.