|Expression of glial cell-derived neurotrophic factor and its receptor in the stem-cell-containing human limbal epithelium|
|Qi, H.1,2; Li, D-Q1; Bian, F.1,3; Chuang, E. Y.1; Jones, D. B.1; Pflugfelder, S. C.1|
|刊名||BRITISH JOURNAL OF OPHTHALMOLOGY|
|收录类别||SCI ; ISTP|
|WOS标题词||Science & Technology|
|关键词[WOS]||GDNF FAMILY ; POPULATION ; MIGRATION ; PATHWAYS ; LOCATION ; VIVO ; RET|
Aim: To evaluate the expression pattern of glial cell line-derived neurotrophic factor (GDNF) with its receptors GDNF family receptor alpha-1 (GFR alpha-1) and Ret in the human corneal and limbal tissues, as well as in the primary human limbal epithelial cultures (PHLEC).
Methods: Expression of GDNF and its receptors, and the co-localisation with stem cell associated and differentiation markers were evaluated by immunofluorescent staining, western blot analysis and real-time PCR in the fresh human corneoscleral tissues, as well as in the PHLEC. Single cell colony-forming and wound-healing assays were also evaluated in PHLEC.
Results: GDNF and GFRa-1 were found to be expressed by a subset of basal cells and co-localised with ATP-binding cassette, subfamily G (WHITE), member 2 (ABCG2) and p63, but not with cytokeratin 3 in the human limbal basal epithelium. In PHLEC, they were expressed by a small population of cells in the less differentiated stage. The GDNF and GFR alpha-1-positive subpopulations were enriched for the expression of ABCG2 and p63 (p < 0.01). Recombinant human GDNF promoted the proliferation and wound healing of epithelial cells in the PHLEC. In contrast, Ret was abundantly located in the human corneal epithelium except for the basal cells of the limbal epithelium.
Conclusion: These findings indicate that GDNF and GFR alpha-1 may represent a property for the phenotype of human corneal epithelial precursor cells. GDNF may signal independently of Ret through GFR alpha-1 in the stem cell-containing limbal epithelium.
|作者单位||1.Baylor Coll Med, Cullen Eye Inst, Dept Ophthalmol, Ocular Surface Ctr, Houston, TX 77030 USA|
2.Peking Univ Third Hosp, Peking Univ Eye Ctr, Beijing, Peoples R China
3.Huazhong Univ Sci & Technol, Dept Ophthalmol, Union Hosp Tongji Med Coll, Wuhan, Hubei Province, Peoples R China
|Qi, H.,Li, D-Q,Bian, F.,et al. Expression of glial cell-derived neurotrophic factor and its receptor in the stem-cell-containing human limbal epithelium[J]. BRITISH JOURNAL OF OPHTHALMOLOGY,2008,92(9):1269-1274.|
|APA||Qi, H.,Li, D-Q,Bian, F.,Chuang, E. Y.,Jones, D. B.,&Pflugfelder, S. C..(2008).Expression of glial cell-derived neurotrophic factor and its receptor in the stem-cell-containing human limbal epithelium.BRITISH JOURNAL OF OPHTHALMOLOGY,92(9),1269-1274.|
|MLA||Qi, H.,et al."Expression of glial cell-derived neurotrophic factor and its receptor in the stem-cell-containing human limbal epithelium".BRITISH JOURNAL OF OPHTHALMOLOGY 92.9(2008):1269-1274.|