Sunday, September 20, 2009

Aurothiomalate being studied in a preclinical lung cancer model

Mayo Clinic researchers find lung cancer oncogene holds key to turning off cancer stem cells, News Release, Mayo Clinic, September 8, 2009. First two paragraphs:
Scientists at the Mayo Clinic campus in Florida have found that the lung cancer oncogene PKCiota is necessary for the proliferation of lung cancer stem cells. These stem cells are rare and powerful master cells that manufacture the other cells that make up lung tumors and are resistant to chemotherapy treatment.
Their study, published in the Oct. 1 issue of Cancer Research, also shows that an agent, aurothiomalate, being tested at Mayo Clinic in a phase I clinical trial substantially inhibits growth of these cancer stem cells.
The news release is about this publication: Atypical Protein Kinase C{iota} Is Required for Bronchioalveolar Stem Cell Expansion and Lung Tumorigenesis by Roderick P Regala and 5 co-authors, including Alan P Fields, Cancer Res 2009(Sep 8) [Epub ahead of print][PubMed Citation]. The final paragraph of the full text:
Our present results show that aurothiomalate exhibits potent antiproliferative activity toward the tumor stem cell niche in a relevant preclinical lung cancer model. Future studies will be required to assess whether aurothiomalate has similar antiproliferative effects on human lung cancer stem cells isolated from primary human lung tumors.
Comment: The publication reports results that were obtained using a mouse model. The News Release states that a Phase I clinical trial is under way at the Mayo Clinic, but this trial isn't mentioned in the full text of the publication in Cancer Research. According to, aurothiomalate is a "gold-containing chemical (salt) used in treating rheumatoid arthritis".

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