本文利用放射性核素Tc-99M标记的IL-2进行IL-2血浆半寿期及其体内分布的研究。结果显示IL-2血浆半寿期仅为10分钟,主要是由于IL-2选择性分布于肝,肾等靶器官,而不是被消除。本文结果显示,IL-2是一高选择性药物,其血浆半寿期很短,而肝,肾等靶器官浓度很高,用于治疗肝肾肿瘤时,具有疗效高而全身毒副作用低的优点。

In this article, the plasma half life of IL-2 and its bio-distribution were studied using radio-nucleus Technetium-99M labeled IL-2. The results showed the plasma half life of IL-2 was merely 10 minutes mainly due to IL-2 distribute to its target organ such as liver, kidney etc,rather than clear out of the body. Our results indicated that IL-2 is a high organ-specific drug. It's plasma half life is short under high concentration in its target organ. So it might have advantages of high effectiveness and low whole body toxicity in treatment of tumor of liver and kidney.