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Subcortical origins of human and monkey neocortical interneurons

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TLDR
It is proposed that the majority of primate neocortical GABAergic interneurons originate from ganglionic eminences of the ventral telencephalon, and this work reveals that the mammalian neocortex shares basic rules for interneuron development, substantially reshaping the understanding of the origin and classification ofPrimate neocortex.
Abstract
In primates, the developmental origin of neocortical interneurons is controversial. Here the authors map out expression patterns of key transcription factors in the developing human and monkey brain and reveal that, just as in rodents, the majority of cortical GABAergic neurons originate from the ganglionic eminences.

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Citations
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Transcriptional landscape of the prenatal human brain

TL;DR: An anatomically comprehensive atlas of the mid-gestational human brain is described, including de novo reference atlases, in situ hybridization, ultra-high-resolution magnetic resonance imaging (MRI) and microarray analysis on highly discrete laser-microdissected brain regions.
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Conserved cell types with divergent features in human versus mouse cortex.

TL;DR: RNA-sequencing analysis of cells in the human cortex enabled identification of diverse cell types, revealing well-conserved architecture and homologous cell types as well as extensive differences when compared with datasets covering the analogous region of the mouse brain.
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Neuronal subtypes and diversity revealed by single-nucleus RNA sequencing of the human brain.

TL;DR: A scalable approach to sequence and quantify RNA molecules in isolated neuronal nuclei from a postmortem brain, generating 3227 sets of single-neuron data from six distinct regions of the cerebral cortex demonstrates a robust and scalable method for identifying and categorizing single nuclear transcriptomes.
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Integrative single-cell analysis of transcriptional and epigenetic states in the human adult brain.

TL;DR: Improved high-throughput methods for single-nucleus droplet-based sequencing and single-cell transposome hypersensitive site sequencing are reported, which revealed regulatory elements and transcription factors that underlie cell-type distinctions and mapped disease-associated risk variants to specific cellular populations, which provided insights into normal and pathogenic cellular processes in the human brain.
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Hippocampal GABAergic Inhibitory Interneurons.

TL;DR: An overview of the current state of the field of interneuron research, focusing largely on the hippocampus, discusses recent advances related to the various cell types, including their development and maturation, expression of subtype-specific voltage- and ligand-gated channels, and their roles in network oscillations.
References
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Journal ArticleDOI

Identification and characterization of neuroblasts in the subventricular zone and rostral migratory stream of the adult human brain

TL;DR: Evidence that neuroblasts exist continuously in the anterior ventral SVZ and RMS of the adult human brain is provided and the data suggest that the SVZ maintains the ability to produce neuroblast in the adulthuman brain.
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Postmitotic Nkx2-1 controls the migration of telencephalic interneurons by direct repression of guidance receptors

TL;DR: A role is demonstrated for the cell-fate determinant Nkx2-1 in regulating neuronal migration by direct transcriptional regulation of guidance receptors in postmitotic cells in the migration of interneurons originating in the MGE.
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The spatial and temporal origin of chandelier cells in mouse neocortex.

TL;DR: Following the developmental trajectory of chandelier cells (ChCs), the most distinct interneurons that innervate the axon initial segment of pyramidal neurons and control action potential initiation, contributes to the assembly of a cortical circuit motif.
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The Zinc Finger Transcription Factor Sp8 Regulates the Generation and Diversity of Olfactory Bulb Interneurons

TL;DR: Conditional inactivation of Sp8 in the embryonic ventral telencephalon reveals a requirement for the normal generation of these interneuron subtypes, and Sp8 conditional mutants exhibit an increase in cell death within the lateral ganglionic eminence and rostral migratory stream, indicating that Sp8 contributes to olfactory bulbinterneuron diversity by regulating the survival, migration, and molecular specification of neuroblasts/interneurons.
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A subpopulation of olfactory bulb GABAergic interneurons is derived from Emx1- and Dlx5/6-expressing progenitors.

TL;DR: The results suggest that some OB interneurons are derived from progenitors outside the LGE and that precursors expressing what has classically been considered a pallial transcription factor generate GABAergic interneeurons.
Related Papers (5)
Trending Questions (1)
What is the origin of GABAAR in human evolution?

The provided paper does not mention the origin of GABAAR in human evolution. The paper focuses on the developmental origin of neocortical interneurons in primates.