机构：[1]Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing[2]Department of Pathology, Xuanwu Hospital, Beijing, China.病理科首都医科大学宣武医院
Objectives V-domain immunoglobulin suppressor of T-cell activation (VISTA) is constitutively expressed in hematopoietic lineage and is highly up-regulated in tumor infiltrated myeloid cells and regulatory T-cells in animal models. However, its expression in human pancreatic tumor microenvironment remains unknown. In this research, we aimed at the expression of VISTA in human pancreatic cancer samples. Methods We performed immunohistochemistry to determine VISTA expression in human pancreatic cancer samples. Results We found that 88.46% of the patients showed high-density infiltration of polymorphonuclear neutrophils and mononuclear immune cells with up-regulated expression of VISTA in cancer tissues, especially in the necrotic foci. Interestingly, it was minimally expressed in pancreatic cancerous cells and was not detectable in either normal ducts or islet cells in cancerous or normal pancreatic tissues. Conclusions We conclude that VISTA is predominantly expressed and up-regulated in the high-density infiltrated immune cells but minimal in human pancreatic cancerous cells. Our results for the first time highlight pancreatic immunosuppressive tumor microenvironment contributed by VISTA and its potential as a prominent target for pancreatic cancer immunotherapy.
基金：
the National Natural Science Foundation of China(grants 81673443 and 81373303).
第一作者机构：[1]Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing
通讯作者：
通讯机构：[*1]Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, Jiangsu China
推荐引用方式(GB/T 7714)：
Jin'e Liu ,Xiaoxue Xie ,Chunxiao Xuan ,et al.High-Density Infiltration of V-domain Immunoglobulin Suppressor of T-cell Activation Up-regulated Immune Cells in Human Pancreatic Cancer[J].PANCREAS.2018,47(6):725-731.doi:10.1097/MPA.0000000000001059.
APA：
Jin'e Liu,,Xiaoxue Xie,,Chunxiao Xuan,,Tingting Li,,Lanlan Wang,...&Jun Liu,.(2018).High-Density Infiltration of V-domain Immunoglobulin Suppressor of T-cell Activation Up-regulated Immune Cells in Human Pancreatic Cancer.PANCREAS,47,(6)
MLA：
Jin'e Liu,,et al."High-Density Infiltration of V-domain Immunoglobulin Suppressor of T-cell Activation Up-regulated Immune Cells in Human Pancreatic Cancer".PANCREAS 47..6(2018):725-731
