RGD Reference Report - Fine-mapping and comprehensive transcript analysis reveals nonsynonymous variants within a novel 1.17 Mb blood pressure QTL region on rat chromosome 10. - Rat Genome Database

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Fine-mapping and comprehensive transcript analysis reveals nonsynonymous variants within a novel 1.17 Mb blood pressure QTL region on rat chromosome 10.

Authors: Saad, Y  Garrett, MR  Manickavasagam, E  Yerga-Woolwine, S  Farms, P  Radecki, T  Joe, B 
Citation: Saad Y, etal., Genomics. 2007 Jan 9;.
RGD ID: 1599269
Pubmed: PMID:17218081   (View Abstract at PubMed)
PMCID: PMC1808207   (View Article at PubMed Central)
DOI: DOI:10.1016/j.ygeno.2006.12.005   (Journal Full-text)

The presence of blood pressure (BP) quantitative trait loci (QTL) on rat chromosome 10 has been clearly demonstrated by linkage analysis and substitution mapping. Using congenic strains containing the LEW rat chromosomal segments on the Dahl salt-sensitive (S) rat background, further iterations of congenic substrains were constructed and characterized to fine-map a chromosome 10 region (QTL1) linked to blood pressure. Comparison of seven congenic substrains refined QTL1 to a 1.17 Mb segment flanked by D10Mco88 and D10Mco89, which are located at 71,513,116 and 72,684,774 bp, respectively. The newly defined QTL1, containing 18 genes, is captured in its entirety within a single congenic substrain. A thorough transcript analysis revealed that 3 of these 18 genes, Ccl5, Ddx52, and RGD1559577, had nonsynonymous allelic variations between the S rat and the LEW rat. None of the detected transcripts within the newly defined QTL1 are implicated directly in BP control in humans or model organisms. Therefore, the present work defines a novel blood pressure QTL with three potential quantitative trait nucleotides.



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Objects Annotated

Genes (Rattus norvegicus)
Ddx52  (DExD-box helicase 52)

QTLs
Bp299  (Blood pressure QTL 299)


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