Understanding addiction vulnerability genes

成瘾易感性基因包括那些可能含有等位基因变异的基因，这些变异导致人类在成瘾易感性方面的个体差异。在前几年，我们根据从多达14个单独的施虐者/控制者或退出成功比较中得出的名义上积极的数据之间的隐蔽性，确定了数十名扮演此类角色的候选人。在本年度，我们报告了来自外部样本/数据集的对我们在自己的数据中最一致地识别的基因的支持增加。 以这种方式识别的基因包括不成比例数量的基因，其产物参与细胞黏附分子的活动。在这一年里，我们通过重新注释细胞黏附分子列表，指定那些更多地参与结构角色而不是信息角色，并确定那些在前几年确定的成瘾易感基因列表中更具信息性和更多代表性的基因，提高了这些命名的准确性。我们在包含这些基因的三个基因座上开发了额外的功能变异，重点是改变CDH13、PTPRD和CSMD1表达水平的扩展单倍型。这些数据为复制人类发现的动物模型提供了基础，并预测了最近在这三个基因座上在人类身上报道的刺激剂剂量-反应关系效应。 这些数据为验证小鼠模型提供了基础，至少在这三个基因座上存在一些常见的等位基因变异，这些基因编码与成瘾相关的细胞黏附分子。 2015年报告期内出版的出版物

Addiction vulnerability genes include those that are likely to harbor allelic variants that contribute to human individual differences in vulnerability to addictions. During prior years, we identified dozens of candidates to play such roles based on the covergences between nominally-positive data derived from up to fourteen separate abuser/control or quit success comparisons. During the current year we have reported increasing support from outside samples/datasets for the genes that we have identified most consistently in our own data. Genes identified in this fashion include a disproportionate number of genes whose products are involved in cell adhesion molecule actions. During this year we increased the accuracy of these designations by reannotating a list of cell adhesion molecules, designating those that were more involved in structural vs informational roles, and identifying those as more informational as more overrepresented in the list of addiction-vulnerability genes identified in prior years. We have developed additional functional variation at three loci that contain these genes, focusing on extended haplotypes that alter level of expression for CDH13, PTPRD and CSMD1 These data provide the basis for animal models that replicate, findings in humans and predict stimulant dose-response relationship effects that were recently reported in humans at these three loci. These data provide the basis for validation of murine models for at least some of the common allelic variation at these three loci at which genes encode addiction-associated cell adhesion molecules. Publications Generated during the 2015 Reporting Period