- Title
- Whole genome survey of copy number variation in the spontaneously hypertensive rat relationship to quantitative trait loci, gene expression, and blood pressure
- Creator
- Charchar, Fadi; Kaiser, Michael; Bingham, Andrew; Fotinatos, Nina; Ahmady, Fahima; Tomaszewski, Maciej; Samani, Nilesh
- Date
- 2010
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/67976
- Identifier
- vital:2909
- Identifier
-
https://doi.org/10.1161/HYPERTENSIONAHA.109.141663
- Identifier
- ISSN:0194-911X
- Abstract
- Copy number variation has emerged recently as an important genetic mechanism leading to phenotypic heterogeneity. The aim of our study was to determine whether copy number variants (CNVs) exist between the spontaneously hypertensive rat (SHR) and its control strain, the Wistar-Kyoto rat, whether these map to quantitative trait loci in the rat and whether CNVs associate with gene expression or blood pressure differences between the 2 strains. We performed a comparative genomic hybridization assay between SHR and Wistar-Kyoto strains using a whole-genome array. In total, 16 CNVs were identified and validated (6 because of a relative loss of copy number in the SHR and 10 because of a relative gain). CNVs were present on rat autosomes 1, 3, 4, 6, 7, 10, 14, and 17 and varied in size from 10.0 kb to 1.6 Mb. Most of these CNVs mapped to chromosomal regions within previously identified quantitative trait loci, including those for blood pressure in the SHR. Transcriptomic experiment! s confirmed differences in the renal expression of several genes (including Ms4a6a, Ndr3, Egln1, Cd36, Sema3a, Ugt2b, and Idi21) located in some of the CNVs between STIR and Wistar-Kyoto rats. In F-2 animals derived from an SHRXWistar-Kyoto cross, we also found a significant increase in blood pressure associated with an increase in copy number in the Egln1 gene. Our findings suggest that, CNVs may play a role in the susceptibility to hypertension and related trails in the SHR. (Hypertension. 2010;55:1231-1238.)
- Publisher
- American Heart Association
- Relation
- Hypertension Vol. 55, no. 5 (2010), p. 1231-1238
- Rights
- Copyright American Heart Association
- Rights
- This metadata is freely available under a CCO license
- Subject
- 1103 Clinical Sciences; DNA copy number variations; Hypertension; Inbred SHR; Genetics; Gene expression; Microarray analysis; Blood pressure
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