Abstract:
:The protease-activated receptor-2 (PAR-2) is a G protein-coupled receptor that is cleaved and activated by trypsin and tryptase. The purpose of this study was to clarify the role of PAR-2 in proliferation of human pancreatic cancer cells. PAR-2 mRNA and protein expression were detected by RT-PCR and Western blotting in three cell lines, SW1990, Capan-2, and Panc-1. The PAR-2 agonist peptide, SLIGKV (25, 50 micro g/ml) and trypsin (10, 100 ng/ml) significantly increased cell proliferation. Enhancement of MAP kinase also was observed in cancer cells treated with SLIGKV and trypsin. In vivo, subcutaneous xenografted tumors showed significantly enhanced growth after treatment with SLIGKV. Tumor-associated trypsinogen (TAT) mRNA and protein expression was detected in SW1990 and Capan-2, suggesting autocrine trypsin production. PAR-2 activated by trypsin plays an important role in promoting proliferation of pancreatic cancer.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Shimamoto R,Sawada T,Uchima Y,Inoue M,Kimura K,Yamashita Y,Yamada N,Nishihara T,Ohira M,Hirakawa Kkeywords:
subject
Has Abstractpub_date
2004-06-01 00:00:00pages
1401-6issue
6eissn
1019-6439issn
1791-2423journal_volume
24pub_type
杂志文章abstract::Primary hyperparathyroidism is a common endocrine disease with a multifaceted genetic background, the elucidation of which has only begun. Among others, loss of the short arm of chromosome 1 and somatic inactivation of the multiple endocrine neoplasia type 1 gene (MEN1) in 11q13 represent significant alterations in th...
journal_title:International journal of oncology
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journal_title:International journal of oncology
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journal_title:International journal of oncology
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journal_title:International journal of oncology
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