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The influence of retinoic acid on immortalized human meibomian gland epithelial cells

ABSTRACT: HumanHT-12v4 microarray of cells in proliferation and differentiation conditions treated with or without 2 uM retinoic acid

ORGANISM(S): Homo sapiens

PROVIDER: GSE37089 | GEO | 2012/05/19

SECONDARY ACCESSION(S): PRJNA167140

REPOSITORIES: GEO

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The influence of retinoic acid on immortalized human meibomian gland epithelial cells

Project description:HumanHT-12v4 microarray of cells in proliferation and differentiation conditions treated with or without 2 uM retinoic acid Cells were treated with or without 2 uM retinoic acid, in proliferation (KSFM + 5 ng/ml EGF + 50 ug/ml bovine pituitary extract) and differentiation (DMEM/F12 + 10 ng/ml EGF + 10% FBS) media

2012-05-18 | E-GEOD-37089 | biostudies-arrayexpress

The influence of 13-cis retinoic acid on human meibomian gland epithelial cells.

Project description:PurposeMeibomian gland dysfunction (MGD) is a primary cause of dry eye disease. One of the risk factors for MGD is exposure to 13-cis retinoic acid (13-cis RA), a metabolite of vitamin A. However, the mechanism is not well understood. We hypothesize that 13-cis RA inhibits cell proliferation, promotes cell death, alters gene and protein expressions, and attenuates cell survival pathways in human meibomian gland epithelial cells.MethodsTo test our hypotheses, immortalized human meibomian gland epithelial cells were cultured with or without 13-cis RA for varying doses and time. Cell proliferation, cell death, gene expression, and proteins involved in proliferation/survival and inflammation were evaluated.ResultsWe found that 13-cis RA inhibited cell proliferation, induced cell death, and significantly altered the expression of 6726 genes, including those involved in cell proliferation, cell death, differentiation, keratinization, and inflammation, in human meibomian gland epithelial cells. Further, 13-cis RA also reduced the phosphorylation of Akt and increased the generation of interleukin-1β and matrix metallopeptidase 9.ConclusionsExposure to 13-cis RA inhibits cell proliferation, increases cell death, alters gene expression, changes signaling pathways, and promotes inflammatory mediator and protease expression in meibomian gland epithelial cells. These effects may be responsible, at least in part, for the 13-cis RA-related induction of MGD.

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Project description:Genome-wide analysis of dihydrotestosterone (DHT) induced changes in gene expression in immortalized human meibomian gland epithelial cells. Analysis of regulation of immortalized human meibomian gland 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 meibomian gland cells is influenced by androgens through regulation of the expression of multiple genes. Results provide important information of the differential regulation of numerous genes in response to dihydrotestosterone incubation of immortalized human meibomian gland epithelial cells. Total RNA was obtained from immortalized human meibomian gland epithelial cells treated for 72 hours 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 an immortalized human meibomian epithelial cell line developed in our laboratory.

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