Effects of Prenatal Exposure to Cigarette Smoke on Offspring Tumor Susceptibility and Associated Immune Mechanisms

Epidemiologic evidence suggests that prenatal exposure to intact (unfractionated) cigarette smoke (CS) increases the incidence of cancer in the offspring. A toxicology study was carried out to examine the effects and underlying mechanisms of prenatal exposure to mainstream cigarette smoke (MCS) on o...

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Bibliographic Details
Published in:Toxicological sciences 2006-01, Vol.89 (1), p.135-144
Main Authors: Ng, Sheung P., Silverstone, Allen E., Lai, Zhi-Wei, Zelikoff, Judith T.
Format: Article
Language:English
Subjects:
Animals
Cell Line, Tumor
cigarette smoke
Cytotoxicity, Immunologic - drug effects
Cytotoxicity, Immunologic - immunology
developmental immunotoxicology
Disease Models, Animal
Disease Susceptibility - chemically induced
Disease Susceptibility - immunology
Disease Susceptibility - pathology
Female
Inhalation Exposure
Lymphoid Tissue - drug effects
Lymphoid Tissue - immunology
Lymphoid Tissue - pathology
Lymphoma, T-Cell - immunology
Lymphoma, T-Cell - pathology
Male
Maternal Exposure - adverse effects
Mice
Mice, Inbred Strains
Neoplasm Transplantation - immunology
Neoplasm Transplantation - pathology
Pregnancy
Prenatal Exposure Delayed Effects - chemically induced
Prenatal Exposure Delayed Effects - immunology
Spleen - drug effects
Spleen - pathology
T-Lymphocytes, Cytotoxic - drug effects
T-Lymphocytes, Cytotoxic - immunology
Thymus Gland - drug effects
Thymus Gland - pathology
Tobacco Smoke Pollution - adverse effects
tumor surveillance mechanisms
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Summary:Epidemiologic evidence suggests that prenatal exposure to intact (unfractionated) cigarette smoke (CS) increases the incidence of cancer in the offspring. A toxicology study was carried out to examine the effects and underlying mechanisms of prenatal exposure to mainstream cigarette smoke (MCS) on offspring resistance to tumor challenge and surveillance mechanisms critical for the recognition and destruction of tumors. Pregnant B6C3F1 mice were exposed by inhalation to MCS for 5 days/week (4 h/day from gestational day 4 to parturition). Smoke-induced effects on offspring—host resistance to transplanted tumor cells; natural killer (NK) cell and cytotoxic T-lymphocyte (CTL) activity; cytokine levels; lymphoid organ immune cell subpopulations; and histology—were examined in 5-, 10- and 20-week-old male and female offspring. At a concentration of smoke roughly equivalent to smoking
ISSN:1096-6080
1096-0929
DOI:10.1093/toxsci/kfj006