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Related Experiment Video

Updated: Dec 25, 2025

Methods to Evaluate Cytotoxicity and Immunosuppression of Combustible Tobacco Product Preparations

Methods to Evaluate Cytotoxicity and Immunosuppression of Combustible Tobacco Product Preparations

Published on: January 10, 2015

p19^Arf Exacerbates Cigarette Smoke-Induced Pulmonary Dysfunction.

Ryuta Mikawa¹, Tadashi Sato², Yohei Suzuki²

¹Research Institute, National Center for Geriatrics and Gerontology, Obu, Aichi 474-8511, Japan.

|March 21, 2020

Summary

Targeting senescent cells, which accumulate with aging and disease, can reduce lung damage from smoking. Eliminating specific senescent cells protected mice from cigarette smoke-induced lung pathologies.

Keywords:

COPD emphysema p19Arf senescence senolysis

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Cigarette Smoke Exposure in Mice using a Whole-Body Inhalation System

Cigarette Smoke Exposure in Mice using a Whole-Body Inhalation System

Published on: October 22, 2020

Area of Science:

Cellular senescence
Aging research
Pulmonary diseases

Background:

Cellular senescence, characterized by the accumulation of senescent cells, is linked to aging and various diseases.
Previous research indicated cellular senescence's role in age- and disease-related pulmonary dysfunction.
This study investigates the specific role of Arf-expressing senescent cells in lung pathologies.

Purpose of the Study:

To determine if eliminating Arf-expressing cells impacts cigarette smoke-induced lung pathologies in mice.
To investigate the therapeutic potential of targeting senescent cells for smoking-related lung diseases.

Main Methods:

Mice were exposed to cigarette smoke or cigarette smoke extract.
Arf-expressing cells were eliminated using genetic or pharmacological methods.
Lung tissue compliance and alveolar airspace were measured to assess lung function.

Main Results:

Cigarette smoke exposure increased Ink4a and Arf expression in mouse lungs, alongside increased lung compliance and alveolar airspace.
Eliminating Arf-expressing cells before smoke exposure prevented these detrimental lung changes.
Treating mice with cigarette smoke extract induced lung dysfunction, which was improved by senescent cell elimination.

Conclusions:

Senescent cells, particularly Arf-expressing ones, play a significant role in cigarette smoke-induced lung pathologies.
Targeting senescent cells represents a promising therapeutic strategy for treating lung diseases associated with smoking.