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Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control [RNA-seq]

ABSTRACT: Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control [RNA-seq]

PROVIDER: PRJNA428528 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6493680.fastq.gz	Fastqsanger.gz
	SRR6493681.fastq.gz	Fastqsanger.gz
	SRR6493682.fastq.gz	Fastqsanger.gz
	SRR6493683.fastq.gz	Fastqsanger.gz
	SRR6493684.fastq.gz	Fastqsanger.gz

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Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control

Project description:Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control

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Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control [scRNA-seq]

Project description:The spinal cord contains neural networks that enable regionally-distinct motor outputs along the body axis. Nevertheless, it remains unclear how segment-specific motor computations are processed because the cardinal interneuron classes that control motor neurons appear uniform at each level of the spinal cord. V2a interneurons are essential to both fore and hindlimb movements and here we identified two major types that emerge during development: Type-I neurons marked by high Chx10 form recurrent networks with neighboring spinal neurons, and Type-II that downregulate Chx10 and project to supraspinal structures. Type-I and -II V2a interneurons are arrayed in counter-gradients and this network activates different patterns of motor output at cervical and lumbar levels. Single cell RNA-seq revealed Type-I and -II V2a neurons are each comprised of multiple subtypes. Our findings uncover a molecular and anatomical organization of V2a interneurons reminiscent of the orderly way motor neurons are divided into columns and pools.

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Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control [RNA-seq]

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Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control [scRNA-seq]

Project description:Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control [scRNA-seq]

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Graded Arrays of Spinal and Supraspinal V2a Interneuron Subtypes Underlie Forelimb and Hindlimb Motor Control.

Project description:The spinal cord contains neural networks that enable regionally distinct motor outputs along the body axis. Nevertheless, it remains unclear how segment-specific motor computations are processed because the cardinal interneuron classes that control motor neurons appear uniform at each level of the spinal cord. V2a interneurons are essential to both forelimb and hindlimb movements, and here we identify two major types that emerge during development: type I neurons marked by high Chx10 form recurrent networks with neighboring spinal neurons and type II neurons that downregulate Chx10 and project to supraspinal structures. Types I and II V2a interneurons are arrayed in counter-gradients, and this network activates different patterns of motor output at cervical and lumbar levels. Single-cell RNA sequencing (RNA-seq) revealed type I and II V2a neurons are each comprised of multiple subtypes. Our findings uncover a molecular and anatomical organization of V2a interneurons reminiscent of the orderly way motor neurons are divided into columns and pools.

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Graded arrays of spinal and supraspinal V2a interneuron subtypes underlie forelimb and hindlimb motor control

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Project description:Transcriptomes of mouse embryonic autopods were generated detecting expression of approximately 26179 transcripts in the developing forelimb or hindlimb autopods, representing about 58 % of the probe sets on MOE-430 A/B GeneChip. Three biological replicate array experiments were finished for each condition and MAS5.0 signal were used to do data analysis. Forty-four transcripts with expression differences higher than 2-fold were detected(T test, P<0.05), including Tbx4, Tbx5, Hoxc10 and Pitx1 which were previously shown to be differentially expressed in developing forelimb and hindlimb bud by in situ hybridization and SAGE study (Margulies 2001). RTPCR and in situ experiments confirmed several top differentially expressed genes which were newly discovered by our experiments. Vast amount of transcripts and its family members such as Bmp, Fgf, Epha, Wnt, T-box and Hox families detected to be highly expressed or differentially expressed in developing autopods, suggesting that the complexity of transcriptomes of developing autopods and dynamic differential expression and differential combinations of gene expression signals in the developing limb tissue contributes to differences in forelimb versus hindlimb patterning. The differentially expressed genes are the essential factors for morphological diversification of developing limb structures. Keywords = microarray Keywords = mouse Keywords = autopod Keywords = limb Keywords = development Keywords = gene expression Keywords = transcriptome Keywords: repeat sample

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Transcriptome comparison of bat (Miniopterus natalensis) forelimb and hindlimb autopods at developmental stages CS16 and CS17 and E13.5 mouse forelimb autopods

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