A novel splicing mutation in the SLC9A3R1 gene in tumors from ovarian cancer patients

Oncology Letters
Erica L KreimannJanusz Limon

Abstract

The aim of the present study was to investigate novel molecular markers that could improve the diagnosis of ovarian cancer patients or be of predictive value. The sequence of the sodium-hydrogen antiporter 3 regulator 1 (SLC9A3R1) gene that codes for the PDZ2 motif of the Na(+)/H(+) exchanger regulatory factor 1 (NHERF1) protein was analyzed. Changes in migration and cell transformation, and alterations of growth factor signaling pathways have been described in cells lacking endogenous NHERF1 or expressing an isoform lacking the function of the PDZ2 domain. Exons 2 and 3, together with flanking intronic sequences of the SLC9A3R1 gene, were amplified and bi-directionally sequenced in 31 primary tumor samples from epithelial ovarian cancer patients. In total, 3 different previously undescribed mutations were detected in 8 out of 31 serous adenocarcinoma tumor samples (25.8%). Bioinformatics analysis predicted a significant effect in the splicing process as a result of the mutations that could disrupt the NHERF1 PDZ2 domain. Point mutations in consensus splicing recognition are a major cause of the splicing defects that are found in several diseases, including cancer. It has previously been shown that a lack of exon 2 and disrupti...Continue Reading

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Citations

Jan 28, 2020·American Journal of Physiology. Renal Physiology·Adrienne M Bushau-Sprinkle, Eleanor D Lederer
Nov 23, 2018·Cells·Michael Mederos Y SchnitzlerUrsula Storch

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