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Human von Economo Neurons Express Transcription Factors Associated with Layer V Subcerebral Projection Neurons

机译:人von Economo神经元表达与V层脑下投射神经元相关的转录因子

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摘要

The von Economo neurons (VENs) are large bipolar Layer V projection neurons found chiefly in the anterior cingulate and frontoinsular cortices. Although VENs have been linked to prevalent illnesses such as frontotemporal dementia, autism, and schizophrenia, little is known about VEN identity, including their major projection targets. Here, we undertook a developmental transcription factor expression study, focusing on markers associated with specific classes of Layer V projection neurons. Using mRNA in situ hybridization, we found that VENs prominently express FEZF2 and CTIP2, transcription factors that regulate the fate and differentiation of subcerebral projection neurons, in humans aged 3 months to 65 years. In contrast, few VENs expressed markers associated with callosal or corticothalamic projections. These findings suggest that VENs may represent a specialized Layer V projection neuron for linking cortical autonomic control sites to brainstem or spinal cord regions.
机译:von Economo神经元(VEN)是大型的双极V层投射神经元,主要位于前扣带回和额叶皮层皮质。尽管VENs与诸如额颞叶痴呆,自闭症和精神分裂症等流行疾病有关,但人们对VEN的身份知之甚少,包括其主要预测目标。在这里,我们进行了一项发育性转录因子表达研究,重点研究了与特定类别的V层投射神经元相关的标志物。使用mRNA原位杂交,我们发现VENs在3个月至65岁的人类中显着表达FEZF2和CTIP2,这是调节脑下投射神经元命运和分化的转录因子。相反,几乎没有VENs表达与call或皮质丘脑投射有关的标志物。这些发现表明,VENs可能代表一个专门的V层投射神经元,用于将皮质自主神经控制位点连接至脑干或脊髓区域。

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