Dietary zinc deficiency or supplementation during gestation increases breast cancer susceptibility in adult female mice offspring following a J-shaped pattern and through distinct mechanisms.

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ID: 45640
2019
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Ranked #5 of 54 articles by views in food and chemical toxicology : an international journal published for the british industrial biological research association

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Abstract
Zinc is required for fetal development and is involved in key processes associated with breast carcinogenesis. We evaluated whether maternal zinc deficiency or supplementation during gestation influences female offspring susceptibility to breast cancer in adulthood. C57BL/6 mice consumed during gestation control (30 p.p.m. zinc), zinc-deficient (8 p.p.m) or zinc-supplemented (45 p.p.m.) diets. Maternal zinc supplementation increased in female mice offspring the incidence of chemically-induced mammary adenocarcinomas that were heavier, compared to control group. This was accompanied by a decreased number of terminal end buds, increased cell proliferation and apoptosis, and increased tumor suppressors p21, p53 and Rassf1, Zfp382 and Stat3 expression in mammary glands, as well as increased zinc status. Although maternal zinc deficiency did not alter the incidence of these lesions, it also induced heavier mammary adenocarcinomas, compared to control group. These effects were accompanied by a decreased number of terminal end buds, increased proto-oncogenes c-Myc and Lmo4 expression and H3K9Me3 and H4K20Me3 epigenetic marks in mammary glands of offspring, and decreased zinc status and increased levels of oxidative marker malondialdehyde. The data suggest that both maternal zinc deficiency and supplementation during gestation programmed increased breast cancer susceptibility in adult mice offspring following a J-shaped pattern through distinct mechanisms.
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da-cruz2019dietaryfood Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors da Cruz, Raquel Santana;de Oliveira Andrade, Fabia;de Oca Carioni, Vivian Montes;Rosim, Mariana Papaléo;Paulino Miranda, Mayara Lilian;Fontelles, Camile Castilho;de Oliveira, Pedro Vitoriano;Barbisan, Luis Fernando;Castro, Inar Alves;Ong, Thomas Prates;
Journal food and chemical toxicology : an international journal published for the british industrial biological research association
Year 2019
DOI
S0278-6915(19)30603-9
URL
Keywords
Breast cancer Zinc fetal programming gestation maternal nutrition

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