Abstract:
:Pancreatic ductal carcinoma (PDC) remains one of the most intractable human malignancies. To obtain insight into the molecular pathogenesis of PDC, we constructed a retroviral cDNA expression library with total RNA isolated from the PDC cell line MiaPaCa-2. Screening of this library with the use of a focus formation assay with NIH 3T3 mouse fibroblasts resulted in the identification of 13 independent genes with transforming activity. One of the cDNAs thus identified encodes an NH(2)-terminally truncated form of the lymphotoxin-beta receptor (LTBR). The transforming activity of this short-type LTBR in 3T3 cells was confirmed by both an in vitro assay of cell growth in soft agar and an in vivo assay of tumorigenicity in nude mice. The full-length (wild-type) LTBR protein was also found to manifest similar transforming activity. These observations suggest that LTBR, which belongs to the tumor necrosis factor receptor superfamily of proteins, may contribute to human carcinogenesis.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Fujiwara S,Yamashita Y,Choi YL,Wada T,Kaneda R,Takada S,Maruyama Y,Ozawa K,Mano Hdoi
10.1016/j.bbrc.2005.10.080subject
Has Abstractpub_date
2005-12-16 00:00:00pages
1256-62issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(05)02336-3journal_volume
338pub_type
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journal_title:Biochemical and biophysical research communications
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