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Genomewide SNP Screen to Detect Quantitative Trait Loci for Alcohol Preference in the High Alcohol Preferring and Low Alcohol Preferring Mice |
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| Authors: | Paula Bice William Valdar Lili Zhang Lixiang Liu Dongbing Lai Nicholas Grahame Jonathan Flint Ting-Kai Li Lawrence Lumeng Tatiana Foroud |
| Institution: | From the Department of Medicine (PB, LZ, LL, DL, LL, TF), School of Medicine, Indiana University, Indianapolis, Indiana;Wellcome Trust Centre for Human Genetics (WV, JF), Roosevelt Drive, Oxford, UK;Department of Psychology (NG), Indiana University Purdue University at Indianapolis, Indianapolis, Indiana;and National Institute on Alcohol Abuse and Alcoholism (TKL), Bethesda, Maryland. |
| Abstract: | Background: The high and low alcohol preferring (HAP1 and LAP1) mouse lines were selectively bred for differences in alcohol intake. The HAP1 and LAP1 mice are essentially noninbred lines that originated from the outbred colony of HS/Ibg mice, a heterogeneous stock developed from intercrossing 8 inbred strains of mice. Methods: A total of 867 informative SNPs were genotyped in 989 HAP1 × LAP1 F2, 68 F1s, 14 parents (6 LAP1, 8 HAP1), as well as the 8 inbred strains of mice crossed to generate the HS/Ibg colony. Multipoint genome wide analyses were performed to simultaneously detect linked QTLs and also fine map these regions using the ancestral haplotypes. Results: QTL analysis detected significant evidence of association on 4 chromosomes: 1, 3, 5, and 9. The region on chromosome 9 was previously found linked in a subset of these F2 animals using a whole genome microsatellite screen. Conclusions: We have detected strong evidence of association to multiple chromosomal regions in the mouse. Several of these regions include candidate genes previously associated with alcohol dependence in humans or other animal models. |
| Keywords: | Quantitative Trait Locus Alcohol Consumption Association |