Identification of novel risk loci with shared effects on alcoholism, heroin, and methamphetamine dependence
| Autor: | Li-Bo Zhang, Hongbin Sun, Zhaojun Ni, Suhua Chang, Lin Lu, Shi Jie, Yan Sun, Zhen Liu, Jiqiang Liu, Yibin Zhang, Yang Chen, Weihua Yue, Fan Wang, Xiangwen Chang |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
media_common.quotation_subject Amphetamine-Related Disorders Bioinformatics Heroin Methamphetamine White matter 03 medical and health sciences Cellular and Molecular Neuroscience Reward system 0302 clinical medicine mental disorders medicine Animals Humans Molecular Biology media_common Substance dependence business.industry Heroin Dependence Addiction medicine.disease Rats Ventral tegmental area Psychiatry and Mental health Alcoholism 030104 developmental biology medicine.anatomical_structure business 030217 neurology & neurosurgery medicine.drug Addiction vulnerability |
| Zdroj: | Molecular psychiatry. 26(4) |
| ISSN: | 1476-5578 |
| Popis: | Different substance dependences have common effects on reward pathway and molecular adaptations, however little is known regarding their shared genetic factors. We aimed to identify the risk genetic variants that are shared for substance dependence (SD). First, promising genome-wide significant loci were identified from 3296 patients (521 alcoholic/1026 heroin/1749 methamphetamine) vs 2859 healthy controls and independently replicated using 1954 patients vs 1904 controls. Second, the functional effects of promising variants on gene expression, addiction characteristics, brain structure (gray and white matter), and addiction behaviors in addiction animal models (chronic administration and self-administration) were assessed. In addition, we assessed the genetic correlation among the three SDs using LD score regression. We identified and replicated three novel loci that were associated with the common risk of heroin, methamphetamine addiction, and alcoholism: ANKS1B rs2133896 (Pmeta = 3.60 × 10−9), AGBL4 rs147247472 (Pmeta = 3.40 × 10−12), and CTNNA2 rs10196867 (Pmeta = 4.73 × 10−9). Rs2133896 in ANKS1B was associated with ANKS1B gene expression and had effects on gray matter of the left calcarine and white matter of the right superior longitudinal fasciculus in heroin dependence. Overexpression of anks1b gene in the ventral tegmental area decreased addiction vulnerability for heroin and methamphetamine in self-administration rat models. Our findings could shed light on the root cause for substance dependence and will be helpful for the development of cost-effective prevention strategies for general addiction disorders. |
| Databáze: | OpenAIRE |
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