To construct a single-nucleus transcriptomic atlas of the basal forebrain across different ages to understand molecular changes during development and early ageing, which is crucial for addressing age-related neurodegenerative diseases.
Key Findings:
Distinct molecular regulatory patterns were identified in basal forebrain subclasses during ageing, with implications for understanding Alzheimer's disease.
Four potential regulatory networks related to cholesterol/lipid metabolism, DNA damage repair, and death receptor signaling were uncovered in 5xFAD mice, which may inform therapeutic strategies.
The cholinergic subtype CN-2 showed increased activity of regulons associated with Srebf2 and Zmiz1, affecting hub genes in these networks.
Interpretation:
The study provides insights into the molecular mechanisms of ageing and their implications for neurodegenerative diseases, particularly Alzheimer's disease, highlighting the vulnerability of cholinergic neurons and suggesting avenues for future research.
Limitations:
The study is limited to mouse models, which may not fully replicate human ageing and disease processes, potentially affecting the translational value of the findings.
The focus on specific time points may overlook other critical developmental stages.
Conclusion:
This research offers a valuable resource for understanding the molecular underpinnings of ageing-related changes in the basal forebrain, facilitating future therapeutic interventions.
