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New model of prostate cancer helps identify promising pain treatment

COLUMBUS , Ohio Researchers have developed a new line of prostate cancer cells that they hope will provide a better model to study the disease.

This new cancer-cell line has already provided some help. One new study in mice identified a promising possible therapy to reduce skeletal pain that accompanies prostate cancer. Scientists found that a substance called anti-nerve growth factor appeared to be more effective in controlling pain in mice than even morphine.

But the work would not have been possible without the new cell line, said Tom Rosol , a study co-author and a professor of veterinary medicine at Ohio State University.

Armed with this new cell line, scientists will be able to more directly study how prostate cancer affects the body, said Rosol, whose laboratory developed the cell line.

Metastatic bone tumors are a common manifestation in patients with late-stage breast cancer or prostate cancer. "Metastasis" means that cancer has spread from its original site to other areas of the body. But breast cancer typically destroys bone at tumor sites, whereas prostate cancer tumors that spread to bone induce abnormal bone growth.

Currently, most models used to study prostate cancer do not mimic the human condition and the resulting bone metastases. Most of these models really mimic the spread of breast cancer since the bone metastases in that disease are associated with bone loss rather than bone growth.

"Even though there is more bone at the sites of prostate cancer tumors, this formation still damages the bone," said Rosol, who is also dean of the College of Veterinary Medicine at Ohio State . "The new growth compresses nerves, making it terribly painful for the patient."

The results appear in a recent issue of the journal Cancer Research. The study was led by Patrick Mantyh, a professor of preventive sciences at the University of Minnesota.

Only two mammals are known to develop prostate cancer - men
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Contact: Thomas Rosol
Rosol.1@rf.ohio-state.edu
614-688-8749
Ohio State University
1-Dec-2005


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