通过葡萄糖皮质醇受体诱导的三阴性乳腺癌扩散的Levonorgestrel调节
Banashree Bondhopadhyay1, Navya Aggarwal1, Mukesh Chourasia2
1Oncology and Molecular Theragnostic Lab, Centre for Medical Biotechnology, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, 201301 India.
仅含孕激素的避孕药Levonorgestrel可能会通过与葡萄糖皮质体受体 (GR) 的潜在相互作用,使三阴性乳腺癌 (TNBC) 恶化. 这与其对ER阳性细胞的影响形成鲜明对比,突显了对避孕药的使用和乳腺癌的进一步研究的需要.
科学领域:
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 勒沃诺格斯特勒是一种仅含孕激素的避孕药,它可能对超出雌激素受体 (ER) 和孕激素受体 (PR) 的类固醇受体产生异常作用.
- 三重阴性乳腺癌 (TNBC) 缺乏ER和PR,需要对levonorgestrel的替代受体相互作用进行研究.
研究的目的:
- 为了研究levonorgestrel与葡萄糖皮质类受体 (GR) 的结合亲和力.
- 评估莱沃诺格斯特勒对不同乳腺癌细胞系的增殖和粘附的影响.
- 探索莱沃诺格斯特雷尔在TNBC中的潜在作用机制.
主要方法:
- 在基分子对接,以评估levonorgestrel与GR的结合.
- 试验室细胞测定包括对MCF-7 (ER+PR+Her2-),MDA-MB-231和MDA-MB-468 (TNBC) 细胞系的增殖和粘附测定.
- 对Ki67 (扩散标志物) 表达的免疫组织化学分析.
主要成果:
- 莱沃诺格斯特勒的结合自由能量为-83.519 kcal/mol,GR.
- 列沃诺格斯特勒降低了MCF-7细胞的增殖和增加了粘附,同时它显著增加了TNBC细胞系的增殖和减少了粘附.
- 在接受levonorgestrel治疗的MCF-7细胞中,ki67的表达是下调的,但在TNBC细胞系中是上调的.
结论:
- 在没有ER和PR的情况下,Levonorgestrel可能会通过与GR的相互作用对TNBC产生影响.
- 对于Levonorgestrel对乳腺癌细胞系的差异性影响,需要进一步研究.
- 这项研究强调了在乳腺癌管理的背景下考虑使用避孕药,如levonorgestrel的重要性.
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