Cancer is still one of the major diseases threatening human life and health. At present, how to achieve precise diagnosis and treatment of tumors is the biggest challenge in cancer treatment. Prodrugs use the tumor specificity of targeting molecules to deliver anticancer drugs to tumor sites, which can effectively improve drug bioavailability, therapeutic efficacy and safety, and are currently a hot spot in the research and development of anticancer drugs. The targeting molecules of prodrugs mainly include nucleic acid aptamers, polymers, antibodies, polypeptides, etc. Among them, polypeptides have the advantages of good biocompatibility, controllable degradation performance, high in vivo responsiveness, and simple and easy preparation methods, and are widely used. It is used to construct peptide-drug conjugates (PDC) prodrugs to achieve targeted therapy of tumors. In recent years, with the development of phage peptide library technology and peptide standard solid-phase synthesis technology, more and more targeted peptides have been discovered and effectively synthesized and modified, providing strong support for the development of PDC. This review briefly introduces the types and functions of functional peptides and linkers in PDC, and discusses the application of PDC in chemotherapy, immunotherapy and photodynamic therapy in tumor targeted diagnosis and treatment, and finally summarizes the difficulties faced by PDC drug development.

ObjectiveTo investigate whether immune adjuvant can enhance the immunity of dendritic cell vaccine against murine breast cancer. Methods4 groups of mice with tumor are injected saline, immume adjuvant, dendritic cell (DC) vaccine and DC vaccine coupled with immune vaccine, respectively. Tumor volume and weight are measured 21 d later.ResultsThe tumor size in the DC vaccine coupled with immune vaccine group was significantly small compared with control group (P=0.001) and the DC vaccine group (P=0.047).ConclusionImmune adjuvant can enhance the immunity of dendritic cell vaccine against murine breast cancer.

Chromosomes, Human, Pair 14 ; Humans ; Ring Chromosomes ; Syndrome

Antineoplastic Agents ; administration & dosage ; therapeutic use ; Child ; Female ; Humans ; Injections, Intralesional ; Interferon-alpha ; administration & dosage ; therapeutic use ; Male ; Neoplasms ; drug therapy ; Recombinant Proteins ; Treatment Outcome

Bibliometrics ; Financial Management ; Medicine, Chinese Traditional ; Periodicals as Topic ; Research Support as Topic

Humans ; Large-Conductance Calcium-Activated Potassium Channels ; TRPC Cation Channels ; Vasodilation

Aged ; Female ; Humans ; Subclavian Vein ; abnormalities

Animals ; Cell Line ; Chloride Channels ; metabolism ; Epithelial Cells ; metabolism ; Escherichia coli ; metabolism ; Kidney ; cytology ; Osmotic Pressure ; Periplasm ; metabolism ; Swine

Actins ; metabolism ; Angiomyolipoma ; metabolism ; pathology ; surgery ; Epiglottis ; Factor VIII ; metabolism ; Humans ; Laryngeal Neoplasms ; metabolism ; pathology ; surgery ; Male ; Middle Aged

Animals ; Animals, Newborn ; Hypothyroidism ; genetics ; Myocardium ; metabolism ; RNA, Messenger ; genetics ; Rats ; Rats, Wistar ; Receptors, Thyroid Hormone ; genetics