Abnormal neocortex arealization and Sotos-like syndrome-associated behavior in Setd2 mutant mice.

Abnormal neocortex arealization and Sotos-like syndrome-associated behavior in Setd2 mutant mice.
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Setd2 突变小鼠新皮质区域化异常和 Sotos 样综合征相关行为

DOI:
10.1126/sciadv.aba1180
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发表时间:
2021-01
期刊:
影响因子:
13.6
通讯作者:
Zhou Y
Zhou Y
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Xu L;Zheng Y;Li X;Wang A;Huo D;Li Q;Wang S;Luo Z;Liu Y;Xu F;Wu X;Wu M;Zhou Y

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SETD 2控制新皮层区域模式和社会行为。大脑皮层区域特性的正确形成对大脑的认知功能和社会行为至关重要。表观遗传机制,包括组蛋白甲基化,是否调节皮质区域化,在很大程度上仍然未知。在这里,我们删除了Setd 2,组蛋白3赖氨酸-36三甲基化(H3 K36 me 3)的甲基转移酶,在小鼠的背侧前脑发育,并表明Setd 2是必要的适当的皮质区域化和皮质-丘脑-皮质电路的形成。此外,Setd 2条件性基因敲除小鼠在社会互动、运动学习和空间记忆方面表现出缺陷,这让人想起携带SETD 2突变的Sotos样综合征患者。SETD 2以H3 K36 me 3甲基转移酶依赖的方式维持成簇原钙粘蛋白(cPcdh)基因的表达。在cPcdh杂合子小鼠中重现了异常皮质区域化。总之,我们的研究强调了皮质区域化和Sotos样综合征发病机制的表观遗传机制。
SETD2 controls neocortical area patterning and social behaviors. Proper formation of area identities of the cerebral cortex is crucial for cognitive functions and social behaviors of the brain. It remains largely unknown whether epigenetic mechanisms, including histone methylation, regulate cortical arealization. Here, we removed SETD2, the methyltransferase for histone 3 lysine-36 trimethylation (H3K36me3), in the developing dorsal forebrain in mice and showed that Setd2 is required for proper cortical arealization and the formation of cortico-thalamo-cortical circuits. Moreover, Setd2 conditional knockout mice exhibit defects in social interaction, motor learning, and spatial memory, reminiscent of patients with the Sotos-like syndrome bearing SETD2 mutations. SETD2 maintains the expression of clustered protocadherin (cPcdh) genes in an H3K36me3 methyltransferase–dependent manner. Aberrant cortical arealization was recapitulated in cPcdh heterozygous mice. Together, our study emphasizes epigenetic mechanisms underlying cortical arealization and pathogenesis of the Sotos-like syndrome.
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