Identification of a Novel TCF4 Isoform in the Human Corneal Endothelium

Allen Eghrari, Shivakumar Vasanth, Briana C. Gapsis, Henry Bison, Ula Jurkunas, Sheikh Amer Riazuddin, John D Gottsch

Research output: Contribution to journalArticle

Abstract

PURPOSE: Alternative splice isoforms of TCF4, a gene implicated in Fuchs corneal dystrophy, have been identified in multiple human tissues outside of the eye. The aim of this study was to identify the transcriptional profile of TCF4 in the corneal endothelium.

METHODS: We extracted RNA from the donor corneal endothelium and performed rapid amplification of cDNA ends. We tested the expression pattern of 1 newly identified isoform (7b) in a panel of cDNA derived from multiple human tissues and included cDNA from corneal endothelial (CE) and retinal pigment epithelial cell lines. To further delineate differential expression of TCF4 splice variants that span CTG18.1, we analyzed expression of 6 alternative splice isoforms that are transcribed from either exon 2 or 3 in RNA extracted from the corneal endothelium of 3 normal donors and a CE cell line.

RESULTS: We identified 11 different isoforms in control CE tissue, including 1 isoform (7b) not reported previously. This isoform is enriched specifically in the corneal endothelium and placenta compared with other tissues in a panel of human cDNA.

CONCLUSIONS: We demonstrate the complex expression profile of TCF4 in the human corneal endothelium and reveal expression of alternative splice variants of TCF4.

Original languageEnglish (US)
Pages (from-to)899-903
Number of pages5
JournalCornea
Volume37
Issue number7
DOIs
StatePublished - Jul 1 2018

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Corneal Endothelium
Protein Isoforms
Complementary DNA
Fuchs' Endothelial Dystrophy
RNA
Cell Line
Retinal Pigments
Placenta
Exons
Endothelial Cells
Epithelial Cells
Genes

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Identification of a Novel TCF4 Isoform in the Human Corneal Endothelium. / Eghrari, Allen; Vasanth, Shivakumar; Gapsis, Briana C.; Bison, Henry; Jurkunas, Ula; Riazuddin, Sheikh Amer; Gottsch, John D.

In: Cornea, Vol. 37, No. 7, 01.07.2018, p. 899-903.

Research output: Contribution to journalArticle

Eghrari, Allen ; Vasanth, Shivakumar ; Gapsis, Briana C. ; Bison, Henry ; Jurkunas, Ula ; Riazuddin, Sheikh Amer ; Gottsch, John D. / Identification of a Novel TCF4 Isoform in the Human Corneal Endothelium. In: Cornea. 2018 ; Vol. 37, No. 7. pp. 899-903.
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