New Technique for Culturing Corneal Epithelial Cells of Normal Mice

Overview

Journal Mol Vis

Specialties Cell Biology
Molecular Biology
Ophthalmology

Date 2009 Aug 21

PMID 19693295

Citations 14

Authors

Takeshi Kobayashi

Ryuji Yoshioka

Atsushi Shiraishi

Yuichi Ohashi

Affiliations

Soon will be listed here.

Abstract

Purpose: To describe a new method of culturing mouse corneal epithelial cells (MCECs).

Methods: MCECs were isolated from C57/BL6 mouse corneas and cultured on type-I collagen-coated plastic dishes in low-calcium progenitor cell targeting medium (CnT-50). Expression of the mRNAs of N-terminal truncated isoform of p63 (DNp63), cytokeratin 12 (K12), and cytokeratin 14 (K14) were determined by reverse transcription-polymerase chain reaction (RT-PCR). To examine the differentiation capabilities, passage 3 (P3) MCECs at confluence were subcultured on amniotic membrane (AM) in a differentiation medium (CnT-30) until confluence. At confluence, 1 mM calcium was added and cultured for 4 more days. The expression of K12 in the stratified MCECs was analyzed by immunostaining.

Results: The MCECs cultured in CnT-50 proliferated until at least P10. The number of cells at confluency at P3 was 61.8 (SD +/-9.4, n=5) times that at P0. MCECs cultured on AM in CnT-30 with addition of calcium were stratified up to two to three layers, and the stratified MCECs expressed K12. DNp63 mRNA was continuously expressed throughout the different passages, and K12 mRNA was detected in P0 cells and the stratified MCECs on AM.

Conclusions: Cultured MCECs maintain their proliferation and differentiation capabilities as well as their corneal epithelial cell characteristics. These results suggest that MCECs produced by this culturing method provide a useful experimental model which can enable further development of research of the corneal epithelium.

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