کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5562737 1562706 2017 30 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
IR and IGF-1R expression affects insulin induced proliferation and DNA damage
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
IR and IGF-1R expression affects insulin induced proliferation and DNA damage
چکیده انگلیسی
Diabetes mellitus type 2 is in its prediagnostic and early phase characterized by hyperinsulinemia. Previously, we pointed out hyperinsulinemia as a potential link between diabetes mellitus and the increased cancer risk that is associated with this disease through its induction of oxidative stress and DNA damage. In the present study, we address the relationship between the induction of proliferation and genomic damage in vitro in cell lines with different expression of the insulin and the IGF-1 receptors after treating the cells with insulin and the insulin analog glargine. Contribution of the IGF-1 receptor was further examined by application of the IGF-1R inhibitor ((5R,5aS,8aR,9R)-9-hydroxy-5,8,8a,9-tetrahydro-5-(3,4,5-trimethoxyphenyl)-furo[3_,4_:6,7]-naphtho[2,3-d]-1,3-dioxol-6(5aH)-one) (PPP). Insulin as well as insulin glargine stimulated cell proliferation in IGF-receptor-dominated MCF-7 cells and not in insulin receptor-dominated BT-474 cells and PPP attenuated this effect. Both insulins induced DNA damage which was reduced by PPP in MCF-7 cells only. Overall, we showed in this study that high levels of insulin and insulin glargine can enhance cell proliferation in cells which highly express IGF-1 receptor and induce DNA damage in cells with high and also in those with low IGF-1 receptor levels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Toxicology in Vitro - Volume 39, March 2017, Pages 68-74
نویسندگان
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