评估2D和3D细胞环境中的药物摄入和反应差异,使用刺激拉曼散射显微镜.
Fiona Xi Xu1, Rui Sun1, Ryan Owens1
1Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.
Analytical chemistry
|August 26, 2024
概括
三维 (3D) 细胞培养显示出比二维培养更高的抗癌药物耐药性. 刺激拉曼散射 (SRS) 显微镜揭示了类似的细胞内药物水平,但在3D模型中减少了生长影响,表明药物耐受性增强.
科学领域:
- 生物医学工程 生物医学工程
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
背景情况:
- 细胞培养架构 (2D与3D) 影响细胞行为和药物反应.
- 三维 (3D) 细胞培养通常与二维培养相比,对化疗药物的耐药性增加.
- 了解3D耐药性的机制对于有效的癌症治疗至关重要.
研究的目的:
- 用刺激拉曼散射 (SRS) 显微镜在二维和三维细胞培养中比较药物吸收和细胞反应.
- 调查药物吸收的差异是否解释了在3D癌症模型中观察到的强化药物耐药性.
- 阐明3D微环境和细胞外基质在药物反应中的作用.
主要方法:
- 三带SRS成像 (C-D,C-H和指纹区域) 应用到2D和3DA549细胞培养物.
- 细胞内药物水平 (lapatinib) 和球体生长抑制的比较分析.
- 研究药物透模式和细胞外基质的影响.
主要成果:
- 在2D和3D培养物中观察到类似的细胞内拉帕提尼布水平.
- 与2D培养相比,3D球形显示出明显较少的生长抑制,这表明药物耐受性更高.
- 在3D模型中,有限的药物透和细胞外矩阵相互作用有助于降低药物反应.
结论:
- 提高药物耐受性,而不是仅仅改变药物吸收,有助于3D癌症模型中的耐药性.
- 3D微环境和细胞外矩阵在调节药物输送和疗效方面发挥着重要作用.
- 在复杂的3D瘤模型中,SRS显微镜是空间分析药物分布和细胞反应的宝贵工具.
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