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- W2553072079 abstract "Abstract Understanding the molecular mechanisms that regulate the corneal epithelial stem cells (CESCs) in maintaining corneal homeostasis remains elusive largely due to the lack of a specific marker for their isolation. This study aims to enrich CESCs from human donor limbal epithelium and to evaluate the level of enrichment based on expression of ΔNp63α, a putative CESC marker. A two‐stage enrichment of CESCs was carried out. (a) The limbal basal epithelial cells were isolated by differential enzymatic treatment and five‐fold enrichment was achieved from 2% of CESCs present in the total limbal epithelium. The CESCs were quantified on the basis of two parameters—high expression of p63/ABCG2 and nucleus to cytoplasmic (N/C) ratio ≥0.7. (b) Cytospin smears of isolated basal cells were Giemsa stained and cells with N/C ratio ≥0.7 were separated by laser capture microdissection. This strategy resulted in an enrichment of CESCs to 78.57% based on two‐parameter analysis using p63 and 76.66% using ABCG2. RT‐PCR was carried out for ΔNp63 isoforms (α, β, and γ) and connexin‐43, with GAPDH for normalization. The expression of ΔNp63α was restricted to the enriched population of CESCs in contrast to its absence in limbal basal cells with N/C ratio <0.7 and CCECs. The unique expression of ΔNp63α and 5.9‐fold reduced connexin‐43 expression in the enriched population of CESCs indicates its high purity. Further analysis of these cells will help in elucidating the molecular mechanisms associated with stemness and also in identifying a specific marker for CESCs." @default.
- W2553072079 created "2016-11-30" @default.
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- W2553072079 date "2016-11-09" @default.
- W2553072079 modified "2023-10-16" @default.
- W2553072079 title "A novel method for a high enrichment of human corneal epithelial stem cells for genomic analysis" @default.
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- W2553072079 doi "https://doi.org/10.1002/jemt.22771" @default.
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