This article introduces the proteomic study of the cell lines,tissue,pancreatic juice and serum from well-diagnosed patients of pancreatic cancer,benign pancreatic disease,normal control,etc.The highly specific and sensitive biomarkers and their significant roles in the mechanism of development and progress of pancreatic cancer,early diagnosis,therapy monitoring,prognosis,follow-up,and so on,are presented and discussed.

Immune system is the autologous defence system to resist disease.αβ TCR+ CD3+ CD4-CD8-NK1.1-double negative T cell is a special T lymphocyte which has been described in both humans and rodent models.In recent years,the prognosis has been made in the mechanisms by which DN Treg target antigen-specific T cells and tumor cells.DN Treg cells play an important role in immune regulation,immunosuppression,autoimmune and resistance to the host reaction,HIV infection and antitumor.The study mainly introduces the advance of DN Treg cells in immune treatment.

Objective To study the effect of enteral nutrition(EN) and total parenteral nutrition(TPN)on patients with severe acute pancreatitis by a Meta analysis.Method s Randomized controlled trials of EN in patients with severe acute pancreatitis were searched in Cochrane library,Pubmed database,CNKI database,CBM database.Data were searched by two statisticians.RevMan 5.0 was applied for statistical analysis.Results Nine randomized controlled trials were enrolled into this analysis.Meta-analysis indicated that the use of enteral nutrition decreased the incidence of infectious complications(RR was 0.37,95% CI[0.18,0.77]),pancreas infectious complications (RR was 0.44,95% CI [0.24,0.81],P ＜ 0.01),MODS (RR was 0.33,95% CI[0.19,0.56]),mortaily (RR was 0.45,95% CI [0.26,0.80]),surgical interventions (RR was 0.51,95% CI [0.36,0.71]).When starting within 48 h of admission,EN,in comparison with TPN,resulted in a statistically significant reduction in the risk of MODS,mortaily and infectious complications.Conclusion For patients with severe acute pancreatitis,early EN therapy is better than TPN.

Regulatory T cells play an important role in regulating immune responses.Recently,a novel immune Treg cell with phenotype TCRαβ + CD3 + CD4-CD8-NK1.1-was known as the Double-negative T cells (DNT).DNT cells are able to suppress CD4 + and CD8 + T cells,B cells as well as NK cells and dendritic cells(DCs) and play an important role in regulating immune responses in models of autoimmunity,infection,inflammatory disease,transplantation and tumor immunity.Now DNT cells have already become a hot point in the research of the immunotherapy.This article mainly introduces the possible sources of DNT cells and the mechanisms of their functions.

In recent years,the prognosis and survival quality of tumour patient would be improved greatly through cell immunotherapy,which becomes the priority scientific research.Immunoeytes can kill the tumour cell directly or through immunoregulation.CD4CD8 double-negative T cells is a newly found subset of T cells whose SUlface express neither CD4 nor CD8.This article mainly introduces the advancement of one subet of DNT cell,DN Tregs,in tumor.

Immune system is the autologous defense system for people to resist disease. Immunotherapy stimulates the immune system to resist disease, including treatment with immunocyte and vaccine. In recent years, the prognosis and survival quality of tumour patients have been greatly improved through cell immunotherapy by immunoregulation and killing directly on tumor. Immunotherapy becomes the hotspot in research.The study of DN Treg cell on immunotherapy will be of vital significance.

Pancreatic cancer is a highly malignant tumor of digestive tract which early diagnose is very difficult and has low rate of surgical resection of advanced pancreatic cancer. However, the rate of postoperative recurrence and metastas is high. Its prognosis is poor. To improve the prognosis of pancreatic cancer , it is necessary to improve its early diagnosis and effective prediction of postoperative recurrence and metastasis. In recent years, with the development of proteomics, the early diagnosis of pancreatic cancer and its early diagnosis of recurrence and metastasis was possible. Wsing proteomics technology for protein differences screening, isolation and identification is conductive to early detection of pancreatic proteome changes and establishment of the markers for early diagnosis, and recurrence and metastasis of pancreatic cancer.

Severe acute pancreatitis is a relatively common surgical disease. Patients have a hypermeta-bolic state and nutritional support for patients with SAP is needed. Early enteral nutrition support is a viable option and can improve the nutritional status of patients, protect the gut barrier function, reduce bacteria translocation to regulate the inflammatory response and reduce hospitalization costs. Combined with our do-mestic and foreign literatures in recent years, this review the feasibility and practical implementation of enter-al nutrition in severe acute pancreatitis treatment summarizs.

DNT cells(CD4-CD8-double-negative T cells)ale newly discovered immune cells,whose surface ex press neither CD4 nor CD8 molecules.In recent years,the prognosis and survival quality of tumour patient have been greatly improved through cell immunotherapy.Immunocyte can kill the tumour directly Or through immunoregu lation.The study of DNT cells(double-nnegative T cell)on cancer cells will be of vital significance.

The proteome is the entire complement of proteins expressed by a genome, cell, tissue or organism,which are all types of proteins expressed by one cell in the specific physiological or pathological states. The study of proteomics not only can help us to understand the general rules of activity of proteins,but also illuminate the pathologic mechanisms of numerous diseases. By proteomic analysis of normal individual and pathological individuals, we can find some disease-specific protein molecules, which not only can be a new target for drug design, but also can be a molecular markers of some diseases especially tumors.