1. Gene Expression Profile of Vascular Endothelial Growth Factors (VEGFs) and Platelet-derived Growth Factors (PDGFs) in the Normal Cornea
- Author
-
Anca Maria Cimpean, Marius Raica, Andrei Radu Dan Cosnita, and Mihai Poenaru Sava
- Subjects
Vascular Endothelial Growth Factor A ,Cancer Research ,Platelet-derived growth factor ,Swine ,Angiogenesis ,AKT1 ,Biology ,General Biochemistry, Genetics and Molecular Biology ,Cornea ,chemistry.chemical_compound ,Growth factor receptor ,Gene expression ,medicine ,Animals ,Pharmacology ,Vascular Endothelial Growth Factors ,Receptor Protein-Tyrosine Kinases ,eye diseases ,Vascular endothelial growth factor ,medicine.anatomical_structure ,chemistry ,Cancer research ,biology.protein ,sense organs ,Transcriptome ,Platelet-derived growth factor receptor ,Research Article - Abstract
Background/aim Angiogenic growth factors expression is not known in the normal cornea. The aim was to study corneal gene expression profile of VEGF and PDGF pathways influencing the avascular state of cornea. Materials and methods cDNA synthesis was performed from mRNA extracted from five fresh pig corneas followed by cDNA synthesis and analysis of VEGF and PDGF pathways by TaqMan Array gene expression profile. Results Normal pig cornea lacks VEGFR2 and VEGFR3 gene expression. MK2 and AKT1 genes were significantly overexpressed (p=0.000684, p=0.050995, respectively). Six PDGF pathway genes were overexpressed: TIAM1 (p=0.047), PIK3CA (p=0.00005), IKBKG (p=0.000006), PAK4 (p=0.034), RAC1 (p=0.000006 and PTGS2, p=0.00375). PDGF A was up-regulated, but not with a statistical significance (p=0.79911), while PDGFRα was down-regulated and PDGFRβ was not expressed. Conclusion Normal cornea avascularity is given by growth factor receptors down-regulation. Rapid corneal neovascularisation is induced by activation of the main angiogenic growth factors that induce angiogenic cascade and vessel recruitment.
- Published
- 2021