A Genome-Wide Study on the Perception of the Odorants Androstenone and Galaxolide

作者：Knaapila Antti; Zhu Gu; Medland Sarah E; Wysocki Charles J; Montgomery Grant W; Martin Nicholas G; Wright Margaret J; Reed Danielle R^*

来源：Chemical Senses, 2012, 37(6): 541-552.

DOI：10.1093/chemse/bjs008

• androstenone
• Galaxolide
• genetic twin modeling
• genome-wide association study
• heritability
• twins

Twin pairs and their siblings rated the intensity of the odorants amyl acetate, androstenone, eugenol, Galaxolide, mercaptans, and rose (N = 1573). Heritability was established for ratings of androstenone (h(2) = 0.30) and Galaxolide (h(2) = 0.34) but not for the other odorants. Genome-wide association analysis using 2.3 million single nucleotide polymorphisms indicated that the most significant association was between androstenone and a region without known olfactory receptor genes (rs10966900, P = 1.2 x 10(-7)). A previously reported association between the olfactory receptor OR7D4 and the androstenone was not detected until we specifically typed this gene (P = 1.1 x 10(-4)). We also tested these 2 associations in a second independent sample of subjects and replicated the results either fully (OR7D4, P = 0.00002) or partially (rs10966900, P = 0.010; N = 266). These findings suggest that 1) the perceived intensity of some but not all odorants is a heritable trait, 2) use of a current genome-wide marker panel did not detect a known olfactory genotype-phenotype association, and 3) person-to-person differences in androstenone perception are influenced by OR7D4 genotype and perhaps by variants of other genes.

• 出版日期2012-7
• 单位河北医科大学