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Nerve growth factor modulate proliferation of cultured rabbit corneal endothelial cells and epithelial cells
Xinyu Li1, Zhongguo Li, Liangxiu Qiu
1Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
Abstract:
In order to investigate the effect of nerve growth factor (NGF) on the proliferation of rabbit corneal endothelial cells and epithelial cells, the in vitro cultured rabbit corneal endothelial cells and epithelial cells were treated with different concentrations of NGF. MTT assay was used to examine the clonal growth and proliferation of the cells by determining the absorbency values at 570 nm. The results showed that NGF with three concentrations ranging from 5 U/mL to 500 U/mL enhanced the proliferation of rabbit corneal endothelial cells in a concentration-dependent manner. 50 U/mL and 500 U/mL NGF got more increase of proliferation than that of 5 U/mL NGF did. Meanwhile, 50 U/mL and 500 U/mL NGF could promote the proliferation of the rabbit corneal epithelial cells significantly in a concentration-dependent manner. However, 5 U/mL NGF did not enhance the proliferation of epithelial cells. It was suggested that exogenous NGF can stimulate the proliferation of both rabbit corneal endothelial and epithelial cells, but the extent of modulation is different.
Insights
Nerve growth factor (NGF) significantly enhances rabbit corneal endothelial and epithelial cell proliferation in a dose-dependent manner. Higher NGF concentrations promote greater cell growth, suggesting therapeutic potential for corneal healing.
Area of Science:
- Ophthalmology
- Cell Biology
- Regenerative Medicine
Background:
- Corneal wound healing involves complex cellular processes.
- Nerve growth factor (NGF) plays a role in neuronal survival and growth.
- The specific effects of NGF on corneal cell proliferation require further elucidation.
Purpose of the Study:
- To investigate the impact of exogenous nerve growth factor (NGF) on the proliferation of rabbit corneal endothelial cells.
- To assess the effect of NGF on the proliferation of rabbit corneal epithelial cells.
- To determine the dose-dependent relationship between NGF concentration and corneal cell proliferation.
Main Methods:
- In vitro cell culture of rabbit corneal endothelial and epithelial cells.
- Treatment with varying concentrations of NGF (5 U/mL to 500 U/mL).
- MTT assay to quantify cell proliferation and clonal growth by measuring absorbance at 570 nm.
Main Results:
- NGF demonstrated a concentration-dependent enhancement of rabbit corneal endothelial cell proliferation.
- Both 50 U/mL and 500 U/mL NGF significantly increased endothelial cell proliferation compared to 5 U/mL.
- NGF at 50 U/mL and 500 U/mL also significantly promoted rabbit corneal epithelial cell proliferation in a dose-dependent manner.
- 5 U/mL NGF did not show a significant effect on epithelial cell proliferation.
Conclusions:
- Exogenous NGF stimulates the proliferation of both rabbit corneal endothelial and epithelial cells.
- The proliferative response of corneal endothelial and epithelial cells to NGF differs.
- NGF shows potential as a therapeutic agent to promote corneal cell regeneration.
