近年来,随着生物技术的发展,多肽、蛋白质类药物已成为生物技术新药(new biotechnology drug)的主要品种。与传统的化学合成药物相比,其优点受到了广泛的关注,即与体内正常生理物质十分接近,更易为机体吸收,其药理活性高、针对性强、毒性低。但由于多肽、蛋白质类药物(1)分子质 In recent years, with the development of biotechnology, peptides and protein drugs have become the main varieties of new biotechnology drugs. Compared with the traditional chemical synthetic drugs, its advantages have received widespread attention, which is very close to the normal physiological substances in the body, and more easily absorbed by the body. Its pharmacological activity is high, the pertinence is strong and the toxicity is low. But because of peptides, protein drugs (1) molecular weight