Abstract
To investigate the roles of ΔNp63α during corneal wound healing and the genes regulated by ΔNp63α in limbal epithelial cells. Adenovirus or shRNA targeting ΔNp63α were pre-injected into the anterior chamber of rat eyeballs and the central corneal epithelium was then wounded with NaOH. The effects of ΔNp63α expression during wound healing were observed by propidium iodide staining. In addition, limbal epithelial cells were cultured and ectopically expressed ΔNp63α by transfecting Ad-ΔNp63α. Total RNA was extracted from transfected epithelial cells and subjected to a gene expression microarray assay. The results showed that over-expression of ΔNp63α accelerated the process of corneal wound healing while knockdown of ΔNp63α impaired the process. ΔNp63α positively up-regulated several cell growth promoter genes and could be referred as a positive regulator of limbal epithelial cell proliferation. It might also inhibit cell differentiation and cell death by differential target gene regulation.
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