Open Access

Exposure to polycyclic aromatic hydrocarbons derived from vehicle exhaust gas induces premature senescence in mouse lung fibroblast cells

  • Authors:
    • Feng Yu
    • Ke Ye
    • Yunfeng Hu
    • Jincheng Li
    • Yonglei An
    • Dawei Qu
  • View Affiliations

  • Published online on: March 26, 2019     https://doi.org/10.3892/mmr.2019.10086
  • Pages: 4326-4334
  • Copyright: © Yu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Long‑term exposure to vehicle exhaust gas may lead to various age‑associated disorders, including cardiovascular disease and cancer. Polycyclic aromatic hydrocarbons (PAHs) belong to an important class of carcinogens, which are released into the environment by vehicles and are detectable at high levels in Chinese urban areas. However, whether vehicle exhaust gas (EG), and in particular the PAHs derived from EG, are able to induce cell senescence remains unclear. In the present study, vehicle EG and pure PAHs were used as pollution sources to investigate the effects of long‑term exposure to PAH on the cellular processes occurring in mouse lung fibroblast cells (mLFCs). Using cell proliferation and apoptosis assays, it was demonstrated that benzopyrene (BaP) suppressed the proliferation of mLFCs, and benzanthracene (BaA) and BaP induced cell apoptosis. Molecular analysis suggested that long‑term exposure to BaA and BaP was able to increase the protein expression levels of p53, p21 and the apoptotic factors involved in the caspase cascade, including caspase‑3 and ‑9. Notably, the present study suggested that PAH exposure was able to promote cell senescence in mLFCs by activating the ATM serine/threonine kinase/H2A histone family member X pathway. The present study may provide novel insights into the underlying mechanism of vehicle EG and PAHs in promoting the development of age‑associated diseases.
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May-2019
Volume 19 Issue 5

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Copy and paste a formatted citation
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Spandidos Publications style
Yu F, Ye K, Hu Y, Li J, An Y and Qu D: Exposure to polycyclic aromatic hydrocarbons derived from vehicle exhaust gas induces premature senescence in mouse lung fibroblast cells. Mol Med Rep 19: 4326-4334, 2019.
APA
Yu, F., Ye, K., Hu, Y., Li, J., An, Y., & Qu, D. (2019). Exposure to polycyclic aromatic hydrocarbons derived from vehicle exhaust gas induces premature senescence in mouse lung fibroblast cells. Molecular Medicine Reports, 19, 4326-4334. https://doi.org/10.3892/mmr.2019.10086
MLA
Yu, F., Ye, K., Hu, Y., Li, J., An, Y., Qu, D."Exposure to polycyclic aromatic hydrocarbons derived from vehicle exhaust gas induces premature senescence in mouse lung fibroblast cells". Molecular Medicine Reports 19.5 (2019): 4326-4334.
Chicago
Yu, F., Ye, K., Hu, Y., Li, J., An, Y., Qu, D."Exposure to polycyclic aromatic hydrocarbons derived from vehicle exhaust gas induces premature senescence in mouse lung fibroblast cells". Molecular Medicine Reports 19, no. 5 (2019): 4326-4334. https://doi.org/10.3892/mmr.2019.10086