肥胖会增加乳腺上皮质中的DNA损伤
Mohamed Gaber1, Arnaud Quentel2,3, Julia Holmes1
1Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA.
Breast cancer research : BCR
|January 22, 2025
概括
按体重指数 (BMI) 衡量的肥胖会增加乳腺组织的DNA损伤,特别是在绝经前妇女中. 祖先也影响了这种联系,突出了乳腺癌风险的差异.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 代谢健康 代谢健康
背景情况:
- 肥胖是已知的乳腺癌风险因素,但潜在的机制仍然不清楚.
- 了解肥胖如何影响正常的乳腺组织对于癌症预防策略至关重要.
研究的目的:
- 为了研究身体质量指数 (BMI),肥胖特征和正常乳腺组织中DNA损伤之间的关系.
- 探索代谢因素和祖先对这种关联的影响.
主要方法:
- 利用饮食诱导的肥胖症的小鼠模型来评估乳腺中的DNA双链断裂.
- 在绝经前和绝经后妇女的乳腺上皮质中与DNA断裂相关的BMI.
- 检查了系统和组织水平的氧化DNA损伤.
- 研究了素和IGF-1在3D乳腺菌培养中的作用.
主要成果:
- 肥胖小鼠的体重增加与增加的DNA双链断裂相关.
- 绝经前妇女显示BMI和乳腺DNA断裂之间存在正相关性.
- 高BMI与系统和组织中氧化DNA损伤的增加有关.
- 与非西班牙裔白人相比,非洲裔美国妇女的DNA断裂,瘦素和IGF-1的水平较高.
- 丁和IGF-1暴露增加了乳腺菌培养中的DNA损伤.
结论:
- 肥胖,特别是绝经前妇女,与乳腺组织的DNA损伤增加有关.
- 氧化应激和特定的代谢因素 (勒,IGF-1) 导致DNA损伤.
- 祖先在调节肥胖-DNA损伤联系方面发挥着重要作用,影响乳腺癌风险差异.
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