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Updated: Jun 23, 2026
Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
Pathway analysis of senescence-associated miRNA targets reveals common processes to different senescence induction
Kyle Lafferty-Whyte1, Claire J Cairney, Nigel B Jamieson
1University of Glasgow, Cancer Research UK Beatson Laboratories, Bearsden, Glasgow G61 1BD, UK.
Abstract:
Multiple mechanisms of senescence induction exist including telomere attrition, oxidative stress, oncogene expression and DNA damage signalling. The regulation of the cellular changes required to respond to these stimuli and create the complex senescent cell phenotype has many different mechanisms. MiRNAs present one mechanism by which genes with diverse functions on multiple pathways can be simultaneously regulated. In this study we investigated 12 miRNAs previously identified as senescence regulators. Using pathway analysis of their target genes we tested the relevance of miRNA regulation in the induction of senescence. Our analysis highlighted the potential of these senescence-associated miRNAs (SA-miRNAs) to regulate the cell cycle, cytoskeletal remodelling and proliferation signalling logically required to create a senescent cell. The reanalysis of publicly available gene expression data from studies exploring different senescence stimuli also revealed their potential to regulate core senescence processes, regardless of stimuli. We also identified stimulus specific apoptosis survival pathways theoretically regulated by the SA-miRNAs. Furthermore the observation that miR-499 and miR-34c had the potential to regulate all 4 of the senescence induction types we studied highlights their future potential as novel drug targets for senescence induction.
Insights
This study reveals that specific microRNAs (miRNAs) regulate key cellular processes involved in senescence induction. These senescence-associated miRNAs (SA-miRNAs) offer potential as therapeutic targets for inducing cellular senescence.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- Cellular senescence is a complex process with multiple induction pathways.
- MicroRNAs (miRNAs) are key regulators of gene expression, impacting multiple cellular functions simultaneously.
- Understanding miRNA roles in senescence is crucial for deciphering cellular aging and disease.
Purpose of the Study:
- To investigate the role of 12 previously identified senescence-associated miRNAs (SA-miRNAs) in regulating cellular senescence.
- To analyze the relevance of miRNA regulation in senescence induction through pathway analysis of target genes.
- To explore the potential of SA-miRNAs as therapeutic targets for senescence induction.
Main Methods:
- Pathway analysis of target genes for 12 SA-miRNAs.
- Reanalysis of publicly available gene expression data from various senescence stimuli.
- Identification of SA-miRNA targets involved in cell cycle, proliferation, and apoptosis pathways.
Main Results:
- SA-miRNAs were found to potentially regulate cell cycle, cytoskeletal remodeling, and proliferation signaling, crucial for senescence.
- SA-miRNAs demonstrated the ability to regulate core senescence processes across different stimuli.
- Specific SA-miRNAs, notably miR-499 and miR-34c, were identified as potential regulators of all four studied senescence induction mechanisms.
Conclusions:
- SA-miRNAs play a significant role in orchestrating the cellular changes required for senescence.
- These SA-miRNAs represent a conserved regulatory mechanism for senescence induction, irrespective of the initial stimulus.
- miR-499 and miR-34c show particular promise as novel therapeutic targets for inducing cellular senescence.
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