例如:"lncRNA", "apoptosis", "WRKY"

Non-canonical Wnt Signaling through Ryk Regulates the Generation of Somatostatin- and Parvalbumin-Expressing Cortical Interneurons.

Neuron. 2019 Sep 04;103(5):853-864.e4. Epub 2019 Jun 27
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摘要


GABAergic interneurons have many important functions in cortical circuitry, a reflection of their cell diversity. The developmental origins of this diversity are poorly understood. Here, we identify rostral-caudal regionality in Wnt exposure within the interneuron progenitor zone delineating the specification of the two main interneuron subclasses. Caudally situated medial ganglionic eminence (MGE) progenitors receive high levels of Wnt signaling and give rise to somatostatin cortical interneurons. By contrast, parvalbumin (PV)-expressing basket cells originate mostly from the rostral MGE, where Wnt signaling is attenuated. Interestingly, rather than canonical signaling through β-catenin, signaling via the non-canonical Wnt receptor Ryk regulates interneuron cell-fate specification in vivo and in vitro. Indeed, gain of function of Ryk intracellular domain signaling regulates and PV fate in a dose-dependent manner, suggesting that Ryk signaling acts in a graded fashion. These data reveal an important role for non-canonical Wnt-Ryk signaling in establishing the correct ratios of cortical interneuron subtypes. Copyright © 2019 Elsevier Inc. All rights reserved.

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