负责快速LDL内化的三级复合元件作为乳腺癌的生物标志物,与扩散和早期复发相关
Elizabeth S McDonald1, Tien-Chi Pan2,3, Dhruv K Pant2,3
1Division of Breast Imaging, Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.
Cancer research communications
|January 13, 2025
概括
孕激素受体膜组件1 (PGRMC1) sigma-2受体 (σ2R/TMEM97) 低密度脂蛋白受体 (LDLR) 复合组件与乳腺癌复发有关. TMEM97和PGRMC1表明风险更高,特别是在ER+疾病中,指导未来的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 一个涉及PGRMC1, σ2R/TMEM97和LDLR的三元复合体在胆固醇运输中起作用.
- 这种复合体在乳腺癌中的单个组成部分的预后意义尚未完全阐明.
研究的目的:
- 研究PGRMC1, σ2R/TMEM97和LDLR作为预后性乳腺癌生物标志物.
- 在乳腺癌已确定的分子亚型中定义它们的表达模式.
- 评估它们与细胞增殖和无复发存活率的关联.
主要方法:
- 分析了4,463种侵袭性乳腺癌,使用基因表达特征为基因扩散的测试.
- 考克斯比例危险回归和多变量考克斯分析用于无复发的生存率.
- 根据免疫组织化学,分子亚型,瘤等级和大小对PGRMC1σ2R/TMEM97LDLR表达的分层.
主要成果:
- TMEM97与细胞增殖的相关性最强,特别是在雌激素受体 (ER) 阳性疾病中 (r = 0.59).
- TMEM97和PGRMC1表达与早期复发的风险增加有关,特别是在ER+/HER2−疾病 (HR = 1.5) 和ER+恶性瘤 (HR = 1.49) 中.
- 根据TMEM97表达,在ER−/HER2−或ER−疾病中没有观察到增加复发风险.
结论:
- PGRMC1σ2R/TMEM97LDLR复合体的组成部分是与细胞增殖和早期乳腺癌复发相关的生物标志物.
- 这些发现可以指导进一步研究它们在侵袭性疾病中的作用和潜在的治疗点.
- 了解乳腺癌中扩散和胆固醇代谢的相互作用,对于恶性转变和传播至关重要.
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