Dataset Information

Transcriptomic analysis of iPSC-derived motor neurons from ALS patients carrying ATXN2 intermediate repeat expansions and healthy controls

ABSTRACT: Transcriptomic analysis of iPSC-derived motor neurons from ALS patients carrying ATXN2 intermediate repeat expansions and healthy controls

PROVIDER: PRJNA934449 | ENA |

REPOSITORIES: ENA

ACCESS DATA

Dataset's files

Source:

			Action	DRS
	SRR23347140_1.fastq.gz	Fastqsanger.gz
	SRR23347140_2.fastq.gz	Fastqsanger.gz
	SRR23347141_1.fastq.gz	Fastqsanger.gz
	SRR23347141_2.fastq.gz	Fastqsanger.gz
	SRR23347142_1.fastq.gz	Fastqsanger.gz

Items per page:

1 - 5 of 20

Similar Datasets

Project description:Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder characterized by progressive motor neuron loss and muscle atrophy. Hyperphosphorylated aggregation of the RNA-binding protein, TDP-43, in the motor cortex and spinal cord are defining molecular features of ALS, suggesting TDP-43 dysfunction underlies disease pathogenesis. This phenomenon, however, has been difficult to recapitulate endogenously in animal models, impeding characterization of TDP-43 pathobiology in neurodegeneration. In this study, we report age-dependent accumulation of TDP-43 pathology in the spinal cord and progressive muscle-related deficits in transgenic mice expressing the ALS-associated PFN1C71G mutant protein. We show that transgenic neuronal expression of PFN1C71G induces early hyperphosphorylation of endogenous TDP-43 in the spinal cord that augments over time, preceding accumulation of insoluble non-phosphorylated TDP-43 and the manifestation of muscle denervation and motor dysfunction. Sustained knockdown of Atxn2 in the central nervous system (CNS) in pre-symptomatic PFN1C71G mice by AAV-driven expression of an artificial microRNA (AAV-amiR-Atxn2) reduces aberrant TDP-43 in the spinal cord, while delaying neurodegeneration and improving muscle and motor function. RNA-sequencing analysis of spinal cord samples from PFN1C71G mice and ALS donors show shared patterns of transcriptional perturbation, including a pro-inflammatory gene signature that is attenuated by AAV-amiR-Atxn2. Notably, impaired regulation of the PFN1C71G skeletal muscle transcriptome exceeds that of the spinal cord and also improved by Atxn2 reduction in the CNS. Lastly, we find significant gene co-expression network homology between PFN1C71G mice and human ALS, with shared dysregulation of modules related to neuroinflammation and neuronal function and uncover novel hub genes that provide biological insight into ALS and potential drug targets that can be further investigated in this mouse model.

Dataset Information

Transcriptomic analysis of iPSC-derived motor neurons from ALS patients carrying ATXN2 intermediate repeat expansions and healthy controls

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets