RRC ID |
38503
|
著者 |
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.
|
タイトル |
Semaphorin 4D, a lymphocyte semaphorin, enhances tumor cell motility through binding its receptor, plexinB1, in pancreatic cancer.
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ジャーナル |
Cancer Sci
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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.
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巻・号 |
102(11)
|
ページ |
2029-37
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公開日 |
2011-11-1
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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 |
4.966
|
引用数 |
32
|
WOS 分野
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ONCOLOGY
|
リソース情報 |
ヒト・動物細胞 |
|