Application and Mechanism of Drugs Targeting Short Peptide in The Treatment Pancreatic Cancer
Pancreatic cancer(PC)is a highly fatal disease which originated from pancreatic epithelial and acinar cells,and the survival rate of pancreatic cancer patients is only about 12％.Approximately 95％of pancreatic cancer presents as ductal adenocarcinoma(PDAC).Pancreatic cancer is characterized by high aggressiveness,rapid progression and progression,and high resistance to treatment.Common somatic mutated genes in the early stage of pancreatic cancer include KRAS,CDKN2A,TP53,and SMAD4.Most pancreatic cancer patients are affected by environmental risk factors such as age,sex and diet.Malignant pancreatic cancer is associated with non-invasive,preneoplastic lesions that are thoughted to be precursors,such as pancreatic intraepithelial neoplasia(PanIN),intraductal papillary mucinous neoplasm(IPMN)and mucinous cystadenoma(MCN).In recent years,people have gradually improved the therapy and diagnosis of pancreatic cancer,and the contribution of imaging technology,which enhancing the usage of minimally invasive pancreatectomy that typically includes pancreaticoduodenectomy and distal pancreatectomy.However,combined administration of the chemotherapeutic gemcitabine and erlotinib is still considered a potential first-line treatment for advanced pancreatic cancer,but the development of chemoresistance often leads to poor therapeutic outcomes.Based on the current research progress for pancreatic cancer,its treatment currently remains one of the most important challenges in the medical field.Although some new treatment options have been provided,there were minor clinical success achieved and therefore new safe and effective therapies of pancreatic cancer are still an urgent need for patients.Among these new therapies for pancreatic cancer,short peptide-based treatment protocols have attracted great attention.Peptide is a compound formed by linking α-amino acids together in peptide chains.It is also an intermediate product of proteolysis.The short peptide-based therapy has many advantages such as precise targeting,easy preparation and low toxicity.Short peptides usually act as tumor suppressors by targeting and recognizing tumor-specific expressed proteins.Currently,there is an increased interest in peptides in pharmaceutical and development research,and approximate 140 peptide therapeutics are currently being evaluated in clinical trials.These peptides provide excellent prospects for targeted drug delivery because of their high selectivity,specificity and simplicity of modification.Peptides have high bioactivity and excellent biodegradability.Clinically,short peptides are increasingly used as combination drugs with chemotherapy for tumor treatment.Peptides can induce cancer cell death by numerous mechanisms and peptides have emerged as a promising drug for the treatment of pancreatic cancer.Here we mainly review the roles of peptides on Wnt/β-catenin,NF-κB,autophagy,and the use of peptides as tracer in pancreatic cancer.We also analyzed the benefits and disadvantages existing in the development process of short peptides,which provide the feasibility of targeted short peptides to become new therapeutic approaches for cancer therapy.
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