在小鼠模型中的质母细胞瘤的双光子内显微镜
Kerem Nernekli1, Dilyana B Mangarova2, Yifeng Shi3
1Molecular Imaging Program at Stanford (MIPS), Department of Radiology, Stanford University School of Medicine.
Journal of visualized experiments : JoVE
|March 18, 2024
概括
这项研究提出了一种新方法,用于跟踪脑瘤中的癌症药物输送,使用双光子静脉内显微镜 (2P-IVM). 这种技术允许实时可视化纳米粒子分布在体内,有助于优化脑瘤治疗方法.
科学领域:
- 神经科学是一个神经科学.
- 在瘤学瘤学.
- 生物医学工程 生物医学工程
背景情况:
- 血脑屏障限制了静脉输入癌症疗法到脑瘤的输送.
- 对大脑瘤中巨分子积累的直接体内成像对于优化药物输送策略至关重要.
- 临床前模型对于理解和改进脑恶性瘤治疗干预措施至关重要.
研究的目的:
- 在小鼠质母细胞瘤模型中描述实时在体内跟踪光标记纳米颗粒的协议.
- 证明两光子静脉内显微镜 (2P-IVM) 的实用性,用于可视化通过血脑屏障传递药物.
- 为优化基于纳米粒子的癌症疗法为脑瘤提供基础.
主要方法:
- 开发了一种多步骤的协议,包括动物麻醉,头骨窗口准备,质母细胞细胞植入和头条放置.
- 利用双光子静脉内显微镜 (2P-IVM) 实时成像静脉注射的光纳米粒子.
- 包括手术护理的详细程序和临床前模型的长期随访研究.
主要成果:
- 成功证明了脑瘤中纳米粒子积累和分布的实时体内跟踪.
- 介绍了代表性的2P-IVM成像会议和图像分析技术.
- 评估了2P-IVM方法在临床前脑瘤研究中的优点和局限性.
结论:
- 描述的2P-IVM协议使得在临床前脑瘤模型中有效的实时监测药物输送.
- 这种方法为纳米粒子生物分布提供了宝贵的见解,并可以指导改进脑癌治疗方法的开发.
- 该协议可以适应各种研究问题在体内临床前脑成像.
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