Shape deformation analysis reveals the temporal dynamics of cell-type-specific homeostatic and pathogenic responses to mutant huntingtin - Sorbonne Université
Journal Articles eLife Year : 2021

Shape deformation analysis reveals the temporal dynamics of cell-type-specific homeostatic and pathogenic responses to mutant huntingtin

Abstract

Loss of cellular homeostasis has been implicated in the etiology of several neurodegenerative diseases (NDs). However, the molecular mechanisms that underlie this loss remain poorly understood on a systems level in each case. Here, using a novel computational approach to integrate dimensional RNA-seq and in vivo neuron survival data, we map the temporal dynamics of homeostatic and pathogenic responses in four striatal cell types of Huntington's disease (HD) model mice. This map shows that most pathogenic responses are mitigated and most homeostatic responses are decreased over time, suggesting that neuronal death in HD is primarily driven by the loss of homeostatic responses. Moreover, different cell types may lose similar homeostatic processes, for example, endosome biogenesis and mitochondrial quality control in Drd1-expressing neurons and astrocytes. HD relevance is validated by human stem cell, genomewide association study, and post-mortem brain data. These findings provide a new paradigm and framework for therapeutic discovery in HD and other NDs.
Fichier principal
Vignette du fichier
elife-64984-v1.pdf (3.28 Mo) Télécharger le fichier
Origin Publication funded by an institution

Dates and versions

hal-03151218 , version 1 (24-02-2021)

Identifiers

Cite

Lucile Mégret, Barbara Gris, Satish Sasidharan Nair, Jasmin Cevost, Mary Wertz, et al.. Shape deformation analysis reveals the temporal dynamics of cell-type-specific homeostatic and pathogenic responses to mutant huntingtin. eLife, 2021, 10, pp.e64984. ⟨10.7554/eLife.64984⟩. ⟨hal-03151218⟩
150 View
173 Download

Altmetric

Share

More