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Tobacco Smoke Carcinogens and Lung Cancer

1999/07/21 by S. S. Hecht, Stephen S. Hecht · 1,982 citations
Biochemistry, Genetics and Molecular Biology · Medicine · #Antioxidant Activity and Oxidative Stress #Biology #Cancer #Cancer research #Carcinogen #Carcinogenesis #Carcinogens and Genotoxicity Assessment #Cigarette smoke #Environmental health #Genetics #Genomics, phytochemicals, and oxidative stress #Internal medicine #Lung cancer #Medicine #Nicotine #Oncology #Sidestream smoke #Tobacco smoke

paper · pdf · doi:10.1093/jnci/91.14.1194

published in JNCI Journal of the National Cancer Institute 91(14), 1194-1210 (Oxford University Press)

openalex publication_date 1999/07/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

The complexity of tobacco smoke leads to some confusion about the mechanisms by which it causes lung cancer. Among the multiple components of tobacco smoke, 20 carcinogens convincingly cause lung tumors in laboratory animals or humans and are, therefore, likely to be involved in lung cancer induction. Of these, polycyclic aromatic hydrocarbons and the tobacco-specific nitrosamine 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone are likely to play major roles. This review focuses on carcinogens in tobacco smoke as a means of simplifying and clarifying the relevant information that provides a mechanistic framework linking nicotine addiction with lung cancer through exposure to such compounds. Included is a discussion of the mechanisms by which tobacco smoke carcinogens interact with DNA and cause genetic changes--mechanisms that are reasonably well understood--and the less well defined relationship between exposure to specific tobacco smoke carcinogens and mutations in oncogenes and tumor suppressor genes. Molecular epidemiologic studies of gene-carcinogen interactions and lung cancer--an approach that has not yet reached its full potential--are also discussed, as are inhalation studies of tobacco smoke in laboratory animals and the potential role of free radicals and oxidative damage in tobacco-associated carcinogenesis. By focusing in this review on several important carcinogens in tobacco smoke, the complexities in understanding tobacco-induced cancer can be reduced, and new approaches for lung cancer prevention can be envisioned.

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