Abstract:
:We have developed synthetic double-stranded oligodeoxynucleotides (ODN) as 'decoy' cis elements that block the binding of nuclear factors to promoter regions of targeted genes, resulting in the inhibition of gene transactivation in vivo. In the present study, we employed decoy ODN targeting the transcription factor nuclear factor-kappaB (NF-kappaB) binding cis-elements to hepatic metastasis of murine reticulosarcoma M5076 in mice. Intravenous inoculation of M5076 into mice caused a marked increase in gene expression of interleukin-1beta, tumor necrosis factor-alpha and intercellular adhesion molecule-1 in the liver, whereas intravenous treatment with NF-kappaB decoy ODN reduced M5076-induced transactivation of these genes. Treatment with NF-kappaB decoy ODN, but not scrambled decoy ODN, significantly inhibited hepatic metastasis of M5076 in mice, and furthermore the combined treatment of NF-kappaB decoy ODN with an anti-cancer drug resulted in complete inhibition of hepatic metastasis in half of the mice, without affecting myelosuppression induced by the anti-cancer drug. Here, NF-kappaB decoy ODN inhibited hepatic metastasis of M5076 in mice possibly through a decrease in transactivation of important NF-kappaB-driven genes and also potentiated the anti-metastatic effect of an anti-cancer drug, demonstrating the first successful in vivo therapy for cancer metastasis using NF-kappaB decoy ODN as a novel molecular decoy approach.
journal_name
Gene Therjournal_title
Gene therapyauthors
Kawamura I,Morishita R,Tsujimoto S,Manda T,Tomoi M,Tomita N,Goto T,Ogihara T,Kaneda Ydoi
10.1038/sj.gt.3301478keywords:
subject
Has Abstractpub_date
2001-06-01 00:00:00pages
905-12issue
12eissn
0969-7128issn
1476-5462journal_volume
8pub_type
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