基因工程抗体在疾病诊断、治疗及医学研究等方面都有着广泛的应用。近几年来,国内外学者对抗体的研究已迈入基因工程抗体阶段,其中单链抗体(single chain Fv,scFv)因其具有分子质量小、穿透力强、体内循环半衰期短及排除了Fc段所致的免疫复合物反应等优点,成为基因工程抗体探索领域中的研究热点。尤其是将scFv应用于医学的研究已取得突破性进展,现就scFv的构建及其在医学上的应用综述如下。 Genetic engineering antibodies in the diagnosis, treatment and medical research has a wide range of applications. In recent years, domestic and foreign scholars on antibody research has entered the genetic engineering antibody phase, in which single chain Fv (single chain Fv, scFv) due to its molecular weight, strong penetration, short circulating half-life in the body and exclude the Fc Immune response caused by immune complex, etc., become a research hot spot in the field of genetic engineering antibody exploration. In particular, scFv has been used in medical research breakthrough has been made, the construction of scFv and its medical applications are summarized below.