药学研究进展论文药研究进展论文.doc

The progress of research with antitumor drug [abstract]: Nearly 50 years of research and development of anticancer drugs has made considerable progress in cancer chemotherapy,particularly it enables patients with hematologic malignancies significantly prolong survival time,But a serious threat to human life and health accounted for over 90% of malignant solid tumors has not yet reached a satisfactory effect.Half of cancer patients are still no response or resistance to treatment and eventually lead to treatment failure , so the discovery and development of new anticancer drugs by pharmaceutical companies is still very difficult to be faced with the challenge of long-term mission[1].This chapter provides some brief about hot areas and the latest developments . [keyword]:Antineoplastic,Traditional anticancer drugs , New anticancer drugs 1.Traditional anticancer drugs 1.1 Classification: According to the chemical structure and sources of drugs it includes alkylating antineoplastic agents(Cyclophosphamide), Antimetabolite (Fluorouracil),Antibiotics ( doxorubicin .etc. ) , plant alkaloids ( vincristine ) , hormones . 1.2 Cytotoxic anticancer mechanism of action:①Interfering nucleic acid biosynthesis ② the drug that directly affects the DNA structure and function ③the drug that interferes with the process of transcription and RNA synthesis ④ the drug that interferes with protein synthesis and function 1.3 Feature: Currently considerable period of time or in traditional cytotoxic cancer therapy drugs will continue to be the subject of major drawback of these drugs is poor solid tumor efficacy , side effects , easy to produce drug resistance.In recent years , through the cancer patients during chemotherapy adverse reactions analysis concluded that most of the existing chemotherapy drugs is not strong selectivity in inhibiting or killing tumor cells while normal cells, especially proliferative cells ( such as bone marrow , hair follicles ) also inhibit cytotoxicity.Thus,