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一种稀土-DOTA结合抗体:探测性质和在兰化物系列中的结合亲和力

Todd M Corneillie¹, Paul A Whetstone, Andrew J Fisher

¹Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.

Journal of the American Chemical Society

|March 20, 2003

概括

一种新型抗体,2D12.5对稀土-DOTA复合体具有广泛的特异性,作为医学成像和治疗的多功能平台. 这一发现通过选择性结合和改进的发光来增强基于兰他尼德的探针.

科学领域:

生物化学生物化学
放射化学放射化学是指辐射化学.
免疫学免疫学免疫学

背景情况:

稀土元素具有独特的特性,适合用于医学成像和治疗.
抗体可以被设计为结合特定分子,作为有针对性的输送系统.

研究的目的:

为了研究抗体2D12.5在最初的目标之外的结合能力.
探索抗体-2D12.5在涉及稀土复合物的应用中的潜力.

主要方法:

对抗体2D12.5结合各种兰化物-DOTA复合物的表征.
蛋白质 - 配体相互作用的热力学分析.
在 terbium 复合体中增强发光的研究.

主要成果:

抗体2D12.5广泛地与所有兰坦化物的DOTA复合物结合,而不仅仅是.
结合亲和度随着甲酸离子半径的变化而变化,呈现出一个抛物线关系.
与抗体2D12.5的复合显著增强了 terbium 的发光.

结论:

抗体2D12.5是用于基于稀土的医学探针的多功能支架.
该抗体的广泛的特异性和亲和性使得在以兰他尼德为基础的成像和治疗中有新的应用.
增强的Tb-DOTA-2D12.5的发光度表明了敏感生物成像的潜力.

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