Decoding neurodegeneration one cell at a time.

Area of Science:

• Neurobiology
• Genomics
• Molecular Medicine

Background:

• Neurodegenerative diseases involve protein misfolding and selective neuronal loss.
• A paradox exists: disease genes are widespread, yet only specific neuron types degenerate.
• The molecular basis for this selective vulnerability remains largely unknown.

Purpose of the Study:

• To review how single-cell genomics advances understanding of selective neuronal vulnerability in neurodegeneration.
• To explore the application of these techniques across major neurodegenerative diseases.

Main Methods:

• Single-cell transcriptomics
• Single-cell epigenomics
• Spatial transcriptomics

Main Results:

• These techniques identify affected cell types and disease-associated molecular states.
• They nominate candidate genes and molecules determining neuronal vulnerability.
• They contextualize degenerating neurons within their local tissue environment.

Conclusions:

• Single-cell genomics provides mechanistic insights into selective neuronal vulnerability.
• Further development will expand disease atlases and identify causal mechanisms.
• This knowledge is crucial for informing therapeutic development in neurodegenerative diseases.