Abstract
Excessive alcohol consumption is a major public health problem worldwide. Although drinking habits are known to be inherited, few genes have been identified that are robustly linked to alcohol drinking. We conducted a genome-wide association metaanalysis and replication study among >105,000 individuals of European ancestry and identified β-Klotho (KLB) as a locus associated with alcohol consumption (rs11940694; P = 9.2 × 10-12). β-Klotho is an obligate coreceptor for the hormone FGF21, which is secreted from the liver and implicated in macronutrient preference in humans. We show that brain-specific β-Klotho KO mice have an increased alcohol preference and that FGF21 inhibits alcohol drinking by acting on the brain. These data suggest that a liver-brain endocrine axis may play an important role in the regulation of alcohol drinking behavior and provide a unique pharmacologic target for reducing alcohol consumption.
Original language | English |
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Pages (from-to) | 14372-14377 |
Number of pages | 6 |
Journal | Proceedings of the National Academy of Sciences of the United States of America |
Volume | 113 |
Issue number | 50 |
DOIs | |
Publication status | Published - 13 Dec 2016 |
Externally published | Yes |
Keywords
- Alcohol Drinking/genetics
- Animals
- Behavior, Animal/physiology
- Brain/physiopathology
- Emotions/physiology
- Female
- Fibroblast Growth Factors/physiology
- Genome-Wide Association Study
- Humans
- Klotho Proteins
- Liver/physiopathology
- Male
- Membrane Proteins/deficiency
- Mice
- Mice, 129 Strain
- Mice, Inbred C57BL
- Mice, Knockout
- Polymorphism, Single Nucleotide