Heterotopic Transplantations Reveal Environmental Influences on Interneuron Diversity and Maturation.

Heterotopic Transplantations Reveal Environmental Influences on Interneuron Diversity and Maturation.
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DOI:
10.1016/j.celrep.2017.09.075
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发表时间:
2017-10-17
期刊:
影响因子:
8.8
通讯作者:
Petros TJ
Petros TJ
中科院分区:
生物学1区
文献类型:
--
作者:
Quattrocolo G;Fishell G;Petros TJ

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在胚胎发生过程中,神经节嵴的神经祖细胞产生多种gaba能中间神经元亚型,分布在所有前脑区域。这些细胞在多大程度上是由遗传预先定义的或由迁移后的环境线索决定的,仍然是未知的。为了解决这个问题,我们对出生后早期mge衍生的皮层和海马中间神经元进行了同种和异位移植。移植的细胞迁移并表现出与内源性中间神经元相似的神经化学、电生理、形态和神经化学特征。我们的研究结果表明,宿主环境调节了大脑区域中中间神经元类别的比例。然而,一些特定的中间神经元亚型保留了代表其供体脑区域的特征。gaba能中间神经元是一种极其异质性的细胞群,但指导这种多样性的机制尚不清楚。Quattrocolo等人通过异位移植在新环境中挑战中间神经元前体,以研究环境如何影响中间神经元多样性。
During embryogenesis, neural progenitors in the ganglionic eminences give rise to diverse GABAergic interneuron subtypes that populate all forebrain regions. The extent to which these cells are genetically predefined or determined by postmigratory environmental cues remains unknown. To address this question, we performed homo-and heterotopic transplantation of early postnatal MGE-derived cortical and hippocampal interneurons. Grafted cells migrated and displayed neurochemical, electrophysiological, morphological and neurochemical profiles similar to endogenous interneurons. Our results indicate that the host environment regulates the proportion of interneuron classes in the brain region. However, some specific interneuron subtypes retain characteristics representative of their donor brain regions. GABAergic interneurons are an extremely heterogenous cell population, but the mechanisms directing this diversity remain unclear. Quattrocolo et al. challenged interneuron precursors in new environments via heterotopic transplantations in order to investigate how the environment influences interneuron diversity.
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