Transcriptomics

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Transcriptomic evaluation of tau and TDP-43 synergism shows tauopathy predominates.


ABSTRACT: Cellular responses to co-morbid tau and TDP-43 preceding neurodegeneration have not been characterized. In this study, we evaluate transcriptomic changes at time-points preceding frank neuronal loss using a C. elegans model of tau and TDP-43 co-expression. We find significant differential expression and exon usage in genes enriched in multiple pathways including lipid metabolism and lysosomal degradation. We note that tau related changes largely resemble tau/TDP-43 changes. We test loss-of-function mutations in a subset of tau and TDP-43 responsive genes, identifying new modifiers of neurotoxicity. Characterizing early cellular responses to tau and TDP-43 co-pathology is critical for understanding protective and pathogenic responses to mixed proteinopathies, and an important step in developing therapeutic strategies protecting against pathological tau and TDP-43 in AD.

ORGANISM(S): Caenorhabditis elegans

PROVIDER: GSE249339 | GEO | 2024/03/15

REPOSITORIES: GEO

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