依赖葡萄糖的胰岛素类生长因子1分泌促进乳腺癌细胞瘤发生
Veronica Gentilini1, Giosuè Annibalini2, Giulia Baldelli1
1Unit of Hygiene and Public Health, Department of Biomolecular Sciences, University of Urbino Carlo Bo, 61029, Urbino, Italy.
Life sciences
|October 15, 2025
概括
高血糖水平刺激胰岛素样生长因子-1 (IGF-1) 的产生,促进乳腺癌 (BC) 细胞的生长和增殖. 这突出了IGF-1作为高血糖症和瘤进展之间的联系,对于三级预防策略至关重要.
科学领域:
- 内分泌学 在内分泌学.
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 胰岛素样生长因子-1 (IGF-1) 与乳腺癌 (BC) 的风险和复发有关.
- 像高血糖症这样的代谢障碍对IGF-1在BC中的作用的影响尚未完全理解.
- IGF-1Ea亲激素的N-糖化会影响成熟的IGF-1活性,这表明葡萄糖可能会调节IGF-1对BC的影响.
研究的目的:
- 为了研究葡萄糖对IGF-1参与乳腺癌细胞增殖的影响.
- 通过3D共同培养模型探索转化方法,研究依赖葡萄糖的IGF-1分泌及其对BC的影响.
- 评估依赖葡萄糖的IGF-1分泌对BC细胞生长的生物学影响.
主要方法:
- 创建了稳定转化HEK-293细胞过度表达IGF-1Ea (HEK-IGF1Ea).
- 在不同葡萄糖度下 (超血糖模仿条件) 与HEK-IGF1Ea共同培养的MCF7和ZR-75-1BC细胞.
- 评估瘤发生性特征,包括球形形成和IGF-1受体 (IGF-1R),ERK1/2和Akt信号通路的激活.
主要成果:
- 葡萄糖诱导的IGF-1在共同培养模型中显著增强了BC细胞生长和球形形成.
- MCF7细胞表现出比ZR-75-1细胞更大的球形形成,与更高的IGF-1R表达相关.
- 葡萄糖诱导的IGF-1显著增加了MCF7细胞中的ERK1/2和Akt酸化.
结论:
- IGF-1 作为血糖水平升高和瘤进展之间的分子链接,加强其在促进BC.
- 研究结果表明,通过生活方式干预来控制血糖和IGF-1水平可能有利于BC的三级预防和复发管理.
- 该研究提供了有关代谢状态和癌症生长之间的相互作用的见解,为潜在的治疗策略提供了信息.
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