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Transcriptomic analysis reinforces the implication of spatacsin in neuroinflammation and neurodevelopment
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Transcriptomic analysis reinforces the implication of spatacsin in neuroinflammation and neurodevelopment
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Journal Article
Transcriptomic analysis reinforces the implication of spatacsin in neuroinflammation and neurodevelopment
2025
Overview
Hereditary spastic paraplegia (HSP) encompasses a group of rare genetic diseases primarily affecting motor neurons. Among these, spastic paraplegia type 11 (SPG11) represents a complex form of HSP caused by deleterious variants in the
SPG11
gene, which encodes the spatacsin protein. Previous studies have described several potential roles for spatacsin, including its involvement in lysosome and autophagy mechanisms, neuronal and neurites development or mitochondria function. Despite these findings, the precise function of the spatacsin protein remains elusive. To elucidate its function, we conducted an extensive RNA sequencing (RNAseq) experiment and transcriptomic analysis in three distinct neural structures (cerebellum, cortex and hippocampus) and at three different ages (6 weeks, 4 months and 8 months) in both wild type and
Spg11
−/−
mice. Our functional analysis of differentially expressed genes (DEGs) and Gene Set Enrichment Analysis (GSEA) revealed dysregulation in pathways related to inflammation, RNA metabolism and neuronal and neurite development, factors frequently implicated in neurodegenerative disorders. Notably, we also observed early deregulation in cellular pathways related to cell proliferation. Our results represent a significant step towards a better understanding of the functions of spatacsin in the cell and the underlying cellular mechanisms disrupted by its absence.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ Animals
/ Axons
/ Cerebral Cortex - metabolism
/ DEG
/ Gene set enrichment analysis
/ GSEA
/ Hereditary spastic paraplegia
/ Humanities and Social Sciences
/ Mice
/ Neurodevelopmental disorders
/ Neuroinflammatory Diseases - genetics
/ Neuroinflammatory Diseases - metabolism
/ Neuroinflammatory Diseases - pathology
/ Science
/ Spastic Paraplegia, Hereditary - genetics
/ Spastic Paraplegia, Hereditary - metabolism
/ Spastic Paraplegia, Hereditary - pathology
/ SPG11
