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通过整合素αVβ3-向皮相仿药推进癌症治疗学 IAC:从长椅到床边

Somit Pandey¹, Gurvinder Kaur¹, Nivedita Rana¹

¹Department of Nuclear Medicine, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.

Cancer biotherapy & radiopharmaceuticals

|July 8, 2024

概括

这项研究优化了DOTAGA-IAC的放射性标记,DOTAGA-IAC是一种潜在的治疗药物,向alpha-five beta-three (αVβ3) 整合素. 该药物在一项用于诊断乳腺癌的试点PET/CT研究中显示出有前途.

科学领域:

放射性药物化学放射性药物化学
分子成像学分子成像学
在瘤学瘤学.

背景情况:

在恶性瘤期间,α-五β-三 (αVβ3) 整合素在血管生成中被上调调节.
向αVβ3整合素为瘤血管生成诊断和治疗提供了一种策略.
作为诊断探针,正在开发皮相模性整合素抗剂.

研究的目的:

为了优化DOTAGA-IAC与-68 (Ga),-177 (Lu) 和动-225 (Ac) 的放射性标记.
评估DOTAGA-IAC作为针对瘤血管生成的治疗性放射性药物.
评估Ga-DOTAGA-IAC在乳腺癌患者中的诊断潜力.

主要方法:

在DOTAGA-IAC的放射性标记优化中使用了68Ga,177Lu和225Ac.
对αVβ3受体和癌细胞系的结合亲和力 (K_d) 的量化.
在Wistar大鼠中的生物分布研究和对Lu-DOTAGA-IAC的剂量分析.
在乳腺癌患者的PET/CT成像试点研究中,将Ga-DOTAGA-IAC与F-FDG进行了比较.

主要成果:

在放射性标记的DOTAGA-IAC中实现了高放射性化学纯度 (>99.9%).
DOTAGA-IAC对αVβ3整合素表现出强烈的结合亲和力 (K_d = 15.02 nM).
生物分布显示和部分肝胆排泄;Lu-DOTAGA-IAC的有效剂量为0.17 mSv/MBq.
试点PET/CT使用Ga-DOTAGA-IAC (SUV_max 3.94 ± 0.58) 在所有五名患者中确定了原发性病变.

结论:

DOTAGA-IAC对αVβ3整合素具有强烈的结合,表明其作为癌症PET成像剂的潜力.
在乳腺癌诊断方面,Ga-DOTAGA-IAC PET/CT 显示出有前途的结果.
需要进一步的临床研究来证实DOTAGA-IAC对αVβ3整合素表达瘤的治疗疗效.

关键词:

德国联邦航空公司 (FDG)国际航空公司 (IAC)血管新生是因为血管新生.这是一种peptidomimetic.这是一个超神论者.αvβ3 整合素的组成部分

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