细胞贩运的正子发射断层扫描成像:细胞放射标记的一种方法
Aditya Bansal1, Timothy R DeGrado2, Mukesh K Pandey3
1Division of Nuclear Medicine, Department of Radiology, Mayo Clinic.
Journal of visualized experiments : JoVE
|November 13, 2023
概括
一种新方法使用[89Zr]Zr-DBN对各种细胞进行放射性标记,用于非侵入性正子发射断层扫描 (PET) 成像. 这种技术可以在体内追踪治疗细胞长达七天,而不会影响细胞功能.
科学领域:
- 生物医学成像学 生物医学成像学
- 放射化学 放射化学是指辐射化学.
- 细胞疗法是一种细胞疗法.
背景情况:
- 干细胞和CAR T细胞疗法在器官再生和癌症免疫疗法方面表现有前途.
- 了解这些治疗细胞的体内行为 (药理动力学和药理动力学) 是至关重要的.
- 需要使用非侵入性细胞追踪方法来监测细胞分布和命运.
研究的目的:
- 开发一种新且高效的方法,用于放射性标记各种细胞类型,以便在体内使用正子发射断层扫描 (PET) 进行追踪.
- 建立一个可直接应用于不同细胞类型的即用放射性标记合成器.
- 验证该方法在长时间内无损害细胞功能的情况下,以非侵入性方式追踪细胞的能力.
主要方法:
- 开发一种新的[89Zr]Zr-p-isothiocyanatobenzyl-desferrioxamine ([89Zr]Zr-DBN) 放射标记方法,使用89Zr.
- [89Zr]Zr-DBN及其生物相容配方的放射合成详细方案.
- 对各种细胞类型的直接放射标记方法的应用,包括干细胞,免疫细胞和肝细胞.
主要成果:
- 成功开发了一种[89Zr]Zr-DBN介导的细胞放射标记协议.
- 已证明能够放射性标记广泛的细胞类型,包括介质细胞干细胞,CAR T细胞,肝细胞等.
- 启用非侵入性PET成像,在体内进行细胞贩运,在药物注射后长达7天.
- 证实放射性标记过程不会对标记细胞的性质或功能产生不利影响.
结论:
- 开发的[89Zr]Zr-DBN方法为通过PET成像进行非侵入性细胞跟踪提供了一个多功能工具.
- 这种方法支持干细胞和CAR T细胞疗法的进步,通过使详细的药理动力学和药理动力学研究成为可能.
- 该协议有助于深入了解体内细胞的行为,这对于优化治疗策略至关重要.
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