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Molecular Cancer Therapeutics
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Editorial

Molecular Cancer Therapeutics: From Bench to Bedside

Daniel D. Von Hoff
Daniel D. Von Hoff
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DOI:  Published November 2001
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The American Association for Cancer Research is pleased to offer researchers an important new tool in the fight against cancer—the new AACR journal Molecular Cancer Therapeutics (MCT). This new journal is dedicated to accelerating the exchange of important information in the development of new therapeutic and preventive agents

The inaugural issue of MCT presents studies of many targets. He et al. utilize epothilone-resistant cell lines to study sites in class I β-tubulin that are critical for the regulation of microtubule stability. Notably, they found one epothilone-resistant cell line that is actually hypersensitive to microtubule-destabilizing agents such as vinblastine

Gamcsik et al. report important findings on the interactions of 7-peptidyl derivatives of camptothecin and topoisomerase I. Their results indicate that these derivatives represent an important new class of camptothecin analogues that give remarkably stable topoisomerase I-DNA cleavage complexes

The work by Cai et al. certainly teaches us that when we think we know the mechanism for something, we probably do not. They found that O6-benzylguanine enhances the cytotoxicity and decreases the mutagenicity of nitrogen mustard through a mechanism that is independent of the activity of O6-alkylguanine-DNA alkyltransferase. They found that O6-benzylguanine actually causes cells to arrest in the G1 phase of the cell cycle. This new finding offers the potential for new clinical trial strategies with the agent

A number of antisense molecules are in clinical trials. Ross et al. review Kirsten-ras as a target of great interest. They note that the use of an antisense oligonucleotide that inhibits Ki-ras expression in a colorectal cancer cell line (SW480) gives very surprising results indeed. They found that inhibitors of Ki-ras had little effect on cell numbers but did significantly affect the secretion of vascular endothelial growth factor, and the expression of other genes involved in invasion and metastasis

In the category of new agents, Yin et al. report on the isocoumarin NM-3. The antitumor activity of NM-3 has been thought to be through its effect on tumor vascular endothelial cells. The study found that at higher concentrations NM-3 can also inhibit growth of human cancer cells via generation of reactive oxygen species and by activation of the p53 tumor suppressor gene

In the area of adenovirus-mediated p53 gene therapy, Carroll et al. show one additional possible explanation for the frequently seen bystander effect of gene therapy (in which tumor cells that do not receive the therapeutic gene, but are near those tumor cells that do receive the gene, are also eliminated). They found that natural killer cells in nude mice play a role in the bystander effect seen in adenovirus-p53 gene therapy of experimental ovarian cancer

Toyooka et al. report an important study on DNA methylation patterns in non-small cell lung cancers and neuroendocrine lung tumors (small-cell type cancer and bronchial carcinoids). They note that these methylation patterns in the neuroendocrine tumors are very different from the non-small cell lung carcinomas. They also note that, in comparison to lung tumors taken directly from patients, in general, tumor cell lines appear to be appropriate models to study aberrant DNA methylation. These studies define new targets for both treatment and prevention (or for the treatment of very early cancer)

Finally, Shain and Dalton treat us to a review that brings us up to date on how contact between a cancer cell and its extracellular matrix can yield de novo multidrug resistance. The review presents several new ideas for targeting this important clinical problem

In summary, MCT spans a broad area of interests. Our editorial team hopes that you will find the studies in this inaugural issue of interest and useful in your work in finding new ways of preventing and curing cancer

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Molecular Cancer Therapeutics: 1 (1)
November 2001
Volume 1, Issue 1
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Molecular Cancer Therapeutics: From Bench to Bedside
Daniel D. Von Hoff
Mol Cancer Ther November 1 2001 (1) (1) 1;

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Molecular Cancer Therapeutics: From Bench to Bedside
Daniel D. Von Hoff
Mol Cancer Ther November 1 2001 (1) (1) 1;
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Molecular Cancer Therapeutics
eISSN: 1538-8514
ISSN: 1535-7163

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