Human-Specific Abnormal Alternative Splicing of Wild-Type PKD1 Induces Premature Termination of Polycystin-1.

ABSTRACT:

Background

The major form of autosomal dominant polycystic kidney disease is caused by heterozygous mutations in PKD1, the gene that encodes polycystin-1 (PC1). Unlike PKD1 genes in the mouse and most other mammals, human PKD1 is unusual in that it contains two long polypyrimidine tracts in introns 21 and 22 (2.5 kbp and 602 bp, respectively; 97% cytosine and thymine). Although these polypyrimidine tracts have been shown to form thermodynamically stable segments of triplex DNA that can cause DNA polymerase stalling and enhance the local mutation rate, the efficiency of transcription and splicing across these cytosine- and thymine-rich introns has been unexplored.

Methods

We used RT-PCR and Western blotting (using an mAb to the N terminus) to probe splici

SUBMITTER: Lea WA 

PROVIDER: S-EPMC6171280 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature