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[Transformation of human corneal endothelial cells by micro- injection of oncogenes]
Abstract:
Human corneal endothelial cells (HCEC) were transfected with some cloned oncogenes. The direct microinjection of either early region (E1) genes of monkey (SA7) and human (Ad5) adenoviruses or Ha-ras oncogen in conjunction with the Ad5 Ela-gene into embryonic HCEC nuclei was shown to result in immortalization of these cells. 3 independent immortalized HCEC lines were established in their growth and morphological properties were studied. These properties were very similar to those of primary HCEC, but unlike primary HCEC the immortalized cells didn't need the endothelial cell growth factor.
Insights
Oncogenes immortalized human corneal endothelial cells (HCEC), creating cell lines similar to primary cells but without needing growth factors. This research offers new possibilities for corneal cell therapies.
Area of Science:
- Cell Biology
- Molecular Biology
- Ophthalmology
Context:
- Human corneal endothelial cells (HCEC) are crucial for corneal clarity.
- Primary HCEC have limited proliferative capacity and require specific growth factors.
- Cellular senescence and limited lifespan hinder research and therapeutic applications.
Purpose:
- To investigate the potential of specific oncogenes to immortalize human corneal endothelial cells.
- To establish and characterize immortalized HCEC lines for further study.
- To determine if immortalized HCEC retain key functional properties of primary HCEC.
Summary:
- Microinjection of early region (E1) genes from adenoviruses (SA7, Ad5) or Ha-ras oncogene with Ad5 Ela-gene into embryonic HCEC induced immortalization.
- Three independent immortalized HCEC lines were successfully established.
- These immortalized HCEC lines exhibited growth and morphological characteristics similar to primary HCEC, notably without requiring endothelial cell growth factor.
Impact:
- Provides a method for generating a continuous supply of HCEC for research.
- Facilitates studies on corneal endothelial cell biology and disease mechanisms.
- Potential applications in regenerative medicine and tissue engineering for corneal repair.