The 16p11.2 locus modulates brain structures common to autism, schizophrenia and obesity.

The 16p11.2 locus modulates brain structures common to autism, schizophrenia and obesity.
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DOI:
10.1038/mp.2014.145
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发表时间:
2015-02
影响因子:
11
通讯作者:
Jacquemont, S.
Jacquemont, S.
中科院分区:
医学1区
文献类型:
--
作者:
Maillard, A. M.;Ruef, A.;Pizzagalli, F.;Migliavacca, E.;Hippolyte, L.;Adaszewski, S.;Dukart, J.;Ferrari, C.;Conus, P.;Maennik, K.;Zazhytska, M.;Siffredi, V.;Maeder, P.;Kutalik, Z.;Kherif, F.;Hadjikhani, N.;Beckmann, J. S.;Reymond, A.;Draganski, B.;Jacquemont, S.

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将基因与神经精神疾病联系起来的解剖结构和机制还没有被破译。在16p11.2 BP 4-BP 5位点的相互拷贝数变异提供了一个独特的机会,研究中间表型的自闭症谱系障碍(ASD)或精神分裂症(SZ)的高风险运营商。我们研究了16p11.2缺失和重复携带者的脑解剖结构变化。除了基因剂量对全球大脑指标的影响外,我们还发现基因组拷贝数与涉及奖励、语言和社会认知的皮质-皮质下区域的灰质体积和白色物质组织特性呈负相关。尽管在我们的16p11.2队列中几乎没有ASD或SZ诊断,但携带者的脑解剖结构变化模式在空间上与ASD和SZ中明确的结构异常重叠。通过测量外周mRNA水平,我们证实了我们的基因组拷贝数发现。这种结合了分子、神经成像和临床的方法,应用于更大的数据集,将有助于通过测量基因对局部大脑解剖结构的影响来解释基因对神经精神疾病的相对贡献。
Anatomical structures and mechanisms linking genes to neuropsychiatric disorders are not deciphered. Reciprocal copy number variants at the 16p11.2 BP4-BP5 locus offer a unique opportunity to study the intermediate phenotypes in carriers at high risk for autism spectrum disorder (ASD) or schizophrenia (SZ). We investigated the variation in brain anatomy in 16p11.2 deletion and duplication carriers. Beyond gene dosage effects on global brain metrics, we show that the number of genomic copies negatively correlated to the gray matter volume and white matter tissue properties in cortico-subcortical regions implicated in reward, language and social cognition. Despite the near absence of ASD or SZ diagnoses in our 16p11.2 cohort, the pattern of brain anatomy changes in carriers spatially overlaps with the well-established structural abnormalities in ASD and SZ. Using measures of peripheral mRNA levels, we confirm our genomic copy number findings. This combined molecular, neuroimaging and clinical approach, applied to larger datasets, will help interpret the relative contributions of genes to neuropsychiatric conditions by measuring their effect on local brain anatomy.
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