The dominant negative H-ras mutant, N116Y, suppresses growth of metastatic

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概要

• 論文の詳細を見る

• In pancreatic cancer, the mutation of c-K-ras is a critical event of tumor growth and metastasis.1 We have previously demonstrated a dominant negative effect of N116Y on the growth of pancreatic cancer cells.2 To evaluate the potential of N116Y for suppressing the metastatic growth of pancreatic tumor cells, we made a replication-deficient recombinant N116Y adenovirus driven by the carcinoembryonic antigen (CEA) promoter (Ad CEA-N116Y). We demonstrated that the expression of N116Y, growth inhibition, and apoptotic death induction were all specific to pancreatic cancer cell lines (PCI-35 and PCI-43) that were promoter positive, whereas no growth retardation was observed in human embryonic pancreas-derived cell line 1C3D3 after Ad CEA-N116Y infection. We examined the effect of Ad CEA-N116Y on the metastatic growth of PCI-43 colonies in liver, which were generated by tumor injection into the spleen of nude mice. The results showed that Ad CEA-N116Y effectively reduced the number of metastatic colonies without any complication by injecting intrasplenically five days after tumor cell inoculation. Thus N116Y can selectively suppress the metastatic growth of pancreatic tumor cell by using the CEA promoter driven adenovirus vector indicating that N116Y gene therapy may be potentially useful for the treatment of pancreatic cancer patients with liver micrometastasis.

• Nature Publishing Groupの論文

著者

• Kuzumaki N.

  ′ Division Of Cancer Gene Regulation Institute For Genetic′ Medicine Hokkaido University′ Hokkaido U

• Takimoto M.

  Division Of Cancer Gene′ Regulation Institute For Genetic Medicine Hokkaido′ University

• Senmaru N.

  Department′ of Surgery, Hokkaido University School of Medicine

• Senmaru N.

  Department′ Of Surgery Hokkaido University School Of Medicine

関連論文

• Gelsolin inhibits apoptosis by blocking mitochondrial membrane′ potential loss and cytochrome c release.
• The dominant negative H-ras mutant, N116Y, suppresses growth′ of metastatic human pancreatic cancer cells in the liver of the′ nude mice.
• The dominant negative H-ras mutant, N116Y, suppresses growth of metastatic

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