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Citation
Morozova, T.V., Anholt, R.R., Mackay, T.F. (2007). Phenotypic and transcriptional response to selection for alcohol sensitivity in Drosophila melanogaster.  Genome Biol. 8(10): R231.
FlyBase ID
FBrf0205161
Publication Type
Research paper
Abstract
Alcoholism is a complex disorder determined by interactions between genetic and environmental risk factors. Drosophila represents a powerful model system to dissect the genetic architecture of alcohol sensitivity, as large numbers of flies can readily be reared in defined genetic backgrounds and under controlled environmental conditions. Furthermore, flies exposed to ethanol undergo physiological and behavioral changes that resemble human alcohol intoxication, including loss of postural control, sedation, and development of tolerance.We performed artificial selection for alcohol sensitivity for 35 generations and created duplicate selection lines that are either highly sensitive or resistant to ethanol exposure along with unselected control lines. We used whole genome expression analysis to identify 1,678 probe sets with different expression levels between the divergent lines, pooled across replicates, at a false discovery rate of q < 0.001. We assessed to what extent genes with altered transcriptional regulation might be causally associated with ethanol sensitivity by measuring alcohol sensitivity of 37 co-isogenic P-element insertional mutations in 35 candidate genes, and found that 32 of these mutants differed in sensitivity to ethanol exposure from their co-isogenic controls. Furthermore, 23 of these novel genes have human orthologues.Combining whole genome expression profiling with selection for genetically divergent lines is an effective approach for identifying candidate genes that affect complex traits, such as alcohol sensitivity. Because of evolutionary conservation of function, it is likely that human orthologues of genes affecting alcohol sensitivity in Drosophila may contribute to alcohol-associated phenotypes in humans.
PubMed ID
PubMed Central ID
PMC2246305 (PMC) (EuropePMC)
Related Publication(s)
Personal communication to FlyBase
Microarray Normalization Protocol for Morozova et al.
Costello et al., 2008.9.10, Microarray Normalization Protocol for Morozova et al. [FBrf0205605]
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Secondary IDs
    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Genome Biol.
    Title
    Genome Biology
    Publication Year
    2000-
    ISBN/ISSN
    1465-6906 1474-7596 1474-760X
    Data From Reference