RRC ID 38503
Author Kato S, Kubota K, Shimamura T, Shinohara Y, Kobayashi N, Watanabe S, Yoneda M, Inamori M, Nakamura F, Ishiguro H, Nakaigawa N, Nagashima Y, Taguri M, Kubota Y, Goshima Y, Morita S, Endo I, Maeda S, Nakajima A, Nakagama H.
Title Semaphorin 4D, a lymphocyte semaphorin, enhances tumor cell motility through binding its receptor, plexinB1, in pancreatic cancer.
Journal Cancer Sci.
Abstract Pancreatic ductal adenocarcinoma (PDAC) is a highly malignant tumor, for which the development of new biomarkers and therapeutic targets has become critical. The main cause of poor prognosis in PDAC patients is the high invasive and metastatic potential of the cancer. In the present study, we report a new signaling pathway that was found to mediate the enhanced tumor cell motility in pancreatic cancer. Semaphorin 4D (Sema4D) is a ligand known to be expressed on different cell types, and has been reported to be involved in the regulation of immune functions, epithelial morphogenesis, and tumor growth and metastasis. In this study, we revealed for the first time that the cancer tissue cells expressing Sema4D in PDAC are tumor-infiltrating lymphocytes. The overexpression of Sema4D and of its receptor, plexinB1, was found to be significantly correlated with clinical factors, such as lymph node metastasis, distant metastasis, and poor prognosis in patients with PDAC. Through in vitro analysis, we demonstrated that Sema4D can potentiate the invasiveness of pancreatic cancer cells and we identified the downstream molecules. The binding of Sema4D to plexinB1 induced small GTPase Ras homolog gene family, member A activation and resulted in the phosphorylation of MAPK and Akt. In addition, in terms of potential therapeutic application, we clearly demonstrated that the enhanced-cell invasiveness induced by Sema4D could be inhibited by knockdown of plexinB1, suggesting that blockade of plexinB1 might diminish the invasive potential of pancreatic cancer cells. Our findings provide new insight into possible prognostic biomarkers and therapeutic targets in PDAC patients.
Volume 102(11)
Pages 2029-37
Published 2011-11
DOI 10.1111/j.1349-7006.2011.02053.x
PMID 21812859
MeSH Aged Antigens, CD / biosynthesis Antigens, CD / genetics Antigens, CD / physiology* Carcinoma, Pancreatic Ductal / metabolism Carcinoma, Pancreatic Ductal / pathology* Cell Movement / physiology Cells, Cultured / cytology Cells, Cultured / metabolism Culture Media, Serum-Free Epithelial Cells / cytology Epithelial Cells / metabolism Female Gene Expression Regulation, Neoplastic / drug effects Humans Kaplan-Meier Estimate MAP Kinase Signaling System Male Middle Aged Neoplasm Proteins / biosynthesis Neoplasm Proteins / genetics Neoplasm Proteins / physiology* Nerve Tissue Proteins / biosynthesis Nerve Tissue Proteins / genetics Nerve Tissue Proteins / physiology* Pancreatic Ducts / cytology Pancreatic Neoplasms / metabolism Pancreatic Neoplasms / pathology* RNA, Messenger / biosynthesis RNA, Neoplasm / biosynthesis RNA, Small Interfering / pharmacology Receptors, Cell Surface / biosynthesis Receptors, Cell Surface / genetics Receptors, Cell Surface / physiology* Semaphorins / biosynthesis Semaphorins / genetics Semaphorins / physiology* Signal Transduction Tumor Cells, Cultured / cytology Tumor Cells, Cultured / metabolism
IF 4.372
Times Cited 23
Human and Animal Cells