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Published on: March 14, 2015
Simvastatin ameliorates senescence-induced mitochondrial dysfunction in vascular smooth muscle cells
C Rossi1, C Macchi1, C D'Alonzo1
1Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Università degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy.
Atherosclerosis
|March 29, 2025
Summary
Simvastatin ameliorates mitochondrial dysfunction and reduces the senescence-associated secretory phenotype (SASP) in aging vascular smooth muscle cells (VSMCs). These findings suggest simvastatin
Area of Science:
- Aging research
- Cellular senescence
- Mitochondrial biology
- Vascular biology
Background:
- Senescence and mitochondrial dysfunction are key aging indicators.
- Dysfunctional mitochondria are linked to age-related diseases.
- Senescent vascular smooth muscle cells (VSMCs) contribute to atherosclerosis.
Purpose of the Study:
- To investigate simvastatin's senostatic effects in senescent VSMCs.
- To analyze simvastatin's impact on mitochondrial quality and function in aging cells.
- To explore simvastatin's potential as a therapeutic agent for age-related vascular conditions.
Main Methods:
- Induction of senescence in VSMCs using doxorubicin or serial passaging.
- Characterization of mitochondrial dysfunction, including reduced membrane potential and respiration.
- Assessment of senescence markers and the senescence-associated secretory phenotype (SASP).
Main Results:
- Senescent VSMCs exhibited altered morphology, cell cycle inhibitors, and dysfunctional mitochondria with reduced respiration and increased ROS.
- Simvastatin (0.1 μM) reduced SASP and ROS production.
- Simvastatin improved mitochondrial respiration in senescent VSMCs, an effect mediated by HMG-CoA reductase inhibition.
Conclusions:
- Simvastatin effectively controls SASP in senescent VSMCs.
- Simvastatin ameliorates senescence-induced mitochondrial dysfunction.
- These findings highlight simvastatin's potential therapeutic benefits in aging and vascular diseases.
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