Mesothelial proteins are expressed in the human cornea
Language English Country England, Great Britain Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
20709057
DOI
10.1016/j.exer.2010.08.002
PII: S0014-4835(10)00246-0
Knihovny.cz E-resources
- MeSH
- Fluorescent Antibody Technique, Indirect MeSH
- GPI-Linked Proteins MeSH
- Immunoenzyme Techniques MeSH
- Calbindin 2 MeSH
- Middle Aged MeSH
- Humans MeSH
- Membrane Glycoproteins genetics metabolism MeSH
- RNA, Messenger genetics MeSH
- Mesothelin MeSH
- Biomarkers, Tumor genetics metabolism MeSH
- Eye Proteins metabolism MeSH
- Reverse Transcriptase Polymerase Chain Reaction MeSH
- Endothelium, Corneal metabolism MeSH
- Epithelium, Corneal metabolism MeSH
- S100 Calcium Binding Protein G genetics metabolism MeSH
- Corneal Stroma metabolism MeSH
- Blotting, Western MeSH
- Check Tag
- Middle Aged MeSH
- Humans MeSH
- Male MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- CALB2 protein, human MeSH Browser
- GPI-Linked Proteins MeSH
- HBME-1 antigen MeSH Browser
- Calbindin 2 MeSH
- Membrane Glycoproteins MeSH
- RNA, Messenger MeSH
- Mesothelin MeSH
- Biomarkers, Tumor MeSH
- Eye Proteins MeSH
- S100 Calcium Binding Protein G MeSH
The goal of our study was to determine whether proteins typical of the human mesothelial cell phenotype, such as mesothelin, HBME-1 (Hector Battifora mesothelial cell-1) protein and calbindin 2, are expressed in the human cornea, especially in endothelial cells. Cryosections and endothelial and epithelial imprints of sixteen human cadaverous corneoscleral discs were used. The presence of proteins was examined using immunohistochemistry and Western blotting, while mRNA levels were determined by qRT-PCR. A strong signal for mesothelin was present in the corneal epithelium, while less intense staining was visible in the endothelium. Similarly, higher and lower mRNA levels were detected using qRT-PCR in the corneal epithelium and endothelium, respectively. HBME-1 antibody strongly stained the corneal endothelium and stromal keratocytes. Marked positivity was present in the corneal stromal extracellular matrix, while no staining was present in the sclera. Calbindin 2 was detected using immunohistochemistry and Western blotting in the corneal epithelium, endothelium and stroma. qRT-PCR confirmed its expression in epithelial and endothelial cells. Three proteins expressed constitutively in mesothelial cells were detected in the human cornea. The possible function of mesothelin in cell-cell contact on the ocular surface is discussed. The presence of HBME-1 protein in the endothelial layer may indicate a still unknown function that could be shared with mesothelial cells of the pleura and peritoneum. The much more pronounced occurrence of calbindin 2 in the corneal epithelium compared to fewer positive endothelial cells explains the higher turnover of epithelial cells compared to the proliferatively inactive endothelium.
References provided by Crossref.org
Presence of Protease Inhibitor 9 and Granzyme B in Healthy and Pathological Human Corneas
Ex vivo expansion and characterization of human corneal endothelium for transplantation: a review
