Cellular senescence-an aging hallmark in chronic obstructive pulmonary disease pathogenesis
1Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Respiratory Investigation
|October 15, 2021
Summary
Cellular senescence, driven by cigarette smoke, contributes to chronic obstructive pulmonary disease (COPD). Autophagy dysfunction exacerbates this, suggesting senotherapies and autophagy activation as potential COPD treatments.
Area of Science:
- Pulmonary Medicine
- Cellular Biology
- Aging Research
Background:
- Chronic obstructive pulmonary disease (COPD) is an aging-related disorder primarily caused by cigarette smoke (CS).
- Cellular senescence, characterized by growth arrest and altered cytokine secretion, is a hallmark of aging and implicated in COPD pathogenesis.
- CS exposure accelerates cellular senescence, potentially through oxidative damage and impaired proteostasis.
Purpose of the Study:
- To investigate the role of autophagy in regulating CS-induced cellular senescence in COPD.
- To explore the potential of senotherapies and autophagy modulation as therapeutic strategies for COPD.
Main Methods:
- The study focuses on the mechanisms linking CS exposure, cellular senescence, and autophagy in COPD pathogenesis.
- It reviews the involvement of insufficient autophagy in CS-induced cellular senescence.
- It discusses the complex role of autophagy activation in COPD, considering cell stress and selective autophagy.
Main Results:
- Insufficient autophagy is involved in regulating CS-induced cellular senescence in COPD.
- Accumulation of senescent cells, driven by CS, is a key factor in COPD development.
- Autophagy's role can be context-dependent, with excessive activation potentially leading to cell death.
Conclusions:
- Senotherapies targeting cellular senescence show promise for COPD treatment.
- Autophagy activation is a potential therapeutic avenue for COPD, though optimal methods require further investigation.
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