Pandey N, Vinod PK. Model scenarios for cell cycle re-entry in Alzheimer's disease.
iScience 2022;
25:104543. [PMID:
35747391 PMCID:
PMC9209725 DOI:
10.1016/j.isci.2022.104543]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 05/01/2022] [Accepted: 06/02/2022] [Indexed: 11/30/2022] Open
Abstract
Alzheimer's disease (AD) is the most prevalent neurodegenerative disease. Aberrant production and aggregation of amyloid beta (Aβ) peptide into plaques is a frequent feature of AD, but therapeutic approaches targeting Aβ accumulation fail to inhibit disease progression. The approved cholinesterase inhibitor drugs are symptomatic treatments. During human brain development, the progenitor cells differentiate into neurons and switch to a postmitotic state. However, cell cycle re-entry often precedes loss of neurons. We developed mathematical models of multiple routes leading to cell cycle re-entry in neurons that incorporate the crosstalk between cell cycle, neuronal, and apoptotic signaling mechanisms. We show that the integration of multiple feedback loops influences disease severity making the switch to pathological state irreversible. We observe that the transcriptional changes associated with this transition are also characteristics of the AD brain. We propose that targeting multiple arms of the feedback loop may bring about disease-modifying effects in AD.
Developed mathematical models of cell cycle re-entry in Alzheimer's disease (AD)
Integration of multiple feedback loops drives irreversible transition to AD
Predicted transcriptional dysregulation is validated using AD gene expression data
Inhibition of self-amplifying feedback loops brings about disease-modifying effects
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