用表面增强的拉曼光谱和金纳米粒子可视化细胞骨蛋白重建癌
Kazushige Yokoyama1, Kia Haering1, Nicole Mathewson2
1The State University of New York Geneseo College, Department of Chemistry and Biochemistry, Geneseo, New York 14454, United States.
皮质类固醇治疗诱导了 vulva 癌细胞中的上皮质-介质细胞过渡 (EMT),导致 E-cadherin 损失和 vimentin 增加. 3D拉曼成像可视化了这些蛋白质变化,帮助EMT识别.
科学领域:
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
- 频谱学是一种光谱学.
背景情况:
- 皮质 - 介质细胞过渡 (EMT) 对于皮质癌转移至关重要.
- EMT涉及细胞粘附 (E-cadherin损失) 和细胞骨蛋白质 (vimentin获取) 的变化.
- 克洛贝塔索尔是一种皮质类固醇,用于慢性皮皮疹.
研究的目的:
- 为了研究克洛贝塔索尔在A431癌细胞中对EMT的影响.
- 使用3D表面增强拉曼散射 (SERS) 成像来监测EMT相关的蛋白质变化.
- 建立拉曼成像作为一种用于识别接受EMT的细胞的方法.
主要方法:
- 用克洛贝塔索尔治疗A431 vulva癌细胞以诱导EMT (A431D细胞).
- 使用合金纳米颗粒的3D SERS成像被用于跟踪蛋白质表达和相互作用.
- 进行了光谱分析,以确定蛋白质收益/损失的顺序,并推断蛋白质的行为.
主要成果:
- 克洛贝塔索尔治疗导致A431细胞中的E-cadherin永久性丧失和vimentin的增加.
- 细胞与维丁一起维持了细胞素8/18的表达.
- 3D拉曼成像可视化了A431D细胞中独特的细胞质特征,结合了母细胞和维丁表达细胞的特征.
结论:
- 克洛贝塔索尔可以在癌细胞中诱导EMT,这对治疗有影响.
- 3D SERS成像有效地可视化了EMT期间的蛋白质动态.
- 拉曼成像提供了一种新的方法来识别混合中间丝类型和接受EMT的细胞.
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