Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Two Drugs Help Fight Kidney, Breast Cancer

01.08.2012
A potentially powerful new approach to treating two lethal metastatic cancers — triple negative breast cancer and clear cell renal cell carcinoma, the most common form of kidney cancer — has been discovered by researchers at Mayo Clinic in Florida.

In the online issue of Molecular Cancer Therapeutics, they report that two drugs, romidepsin and decitabine, work cooperatively to activate a potent tumor suppressor gene that is silenced in these cancers. Once the gene, secreted frizzled related protein one or sFRP1, went to work after the drugs were used, the laboratory tumor cells stopped growing and died.

Both drugs are approved by the Food and Drug Administration to treat blood cancer and are being tested individually in numerous solid cancers in which sFRP1 is disabled. This study was the first to test the use of both in these metastatic cancers linked to sFRP1, and the results are very encouraging, says senior investigator John Copland, Ph.D., a Mayo Clinic molecular biologist.

"We now have the basis for a clinical trial aimed at providing effective therapy for two drug-resistant cancers and perhaps many more tumor types in the future," Dr. Copland says. In addition to breast and kidney cancer, sFRP1 is disabled in colon, ovarian, lung, liver and other tumor types.

Dr. Copland and his colleagues earlier discovered that sFRP1 was silenced in certain cancers. This new work demonstrates that its expression can be restored by romidepsin, which is a histone deacetylase inhibitor, and decitabine, a methyltranferase inhibitor. Both are epigenetic drugs, modifying genes in a way that affects whether they are turned on or off.

"Individually, each drug did not induce any form of cell death but, together, they killed all of the different cell lines of kidney and triple negative breast cancer that we tested in the laboratory," says lead investigator Simon Cooper, Ph.D., a Mayo Clinic molecular biologist who specializes in renal cancer.

The two cancers affect up to 80,000 Americans each year and therapies to treat both, especially when they are advanced, have been very limited, says co-author Edith Perez, M.D., deputy director of Mayo Clinic Cancer Center.

"But now, not only do we have a very promising lead on future therapy, but if this combination treatment works as we hope it does, we will have a biomarker to be able to test which patients might benefit the most," she says. "In other words, a biopsy test could identify patients whose tumors had lost sFRP1 function."

The approach to finding this potential new treatment strategy is novel, adds oncologist Michael Menefee, M.D., who is also a study co-author.

"This type of interdisciplinary preclinical research effort is important, not only because of the value of the science, but also because the drugs are already in the clinic and that will facilitate translational efforts and hopefully confirm the preclinical findings in patients with advanced malignancies," he said.

Other study co-authors include Christina A. von Roemeling; Kylie H. Jang; Laura A. Marlow, M.S.; Stefan K. Grebe, M.D.; Han W. Tun, M.D.; and Gerardo Colon-Otero, M.D.

The study was funded in part by grants from the National Institutes of Health, the David & Lois Stulberg Endowed Fund for Kidney Cancer Research, the Breast Cancer Research Foundation, James C. and Sarah K. Kennedy Mayo Clinic Research Career Development Award for Clinicians, The Brenda E. and Roger S. Luca Family Endowment at The Tallahassee Memorial HealthCare Foundation, RITA Foundation (Research Is The Answer), Scheidel Foundation, and a grant for rare cancers from Dr. Ellis and Dona Brunton.

About Mayo Clinic Cancer Center

As a leading institution funded by the National Cancer Institute, Mayo Clinic Cancer Center conducts basic, clinical and population science research, translating discoveries into improved methods for prevention, diagnosis, prognosis and therapy. For information on cancer clinical trials, call 507-538-7623.

About Mayo Clinic

Mayo Clinic is a nonprofit worldwide leader in medical care, research and education for people from all walks of life. For more information, visit MayoClinic.com or MayoClinic.org/news.

Paul Scotti | EurekAlert!
Further information:
http://www.mayo.edu

More articles from Health and Medicine:

nachricht Using fragment-based approaches to discover new antibiotics
21.06.2018 | SLAS (Society for Laboratory Automation and Screening)

nachricht Scientists learn more about how gene linked to autism affects brain
19.06.2018 | Cincinnati Children's Hospital Medical Center

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Superconducting vortices quantize ordinary metal

Russian researchers together with their French colleagues discovered that a genuine feature of superconductors -- quantum Abrikosov vortices of supercurrent -- can also exist in an ordinary nonsuperconducting metal put into contact with a superconductor. The observation of these vortices provides direct evidence of induced quantum coherence. The pioneering experimental observation was supported by a first-ever numerical model that describes the induced vortices in finer detail.

These fundamental results, published in the journal Nature Communications, enable a better understanding and description of the processes occurring at the...

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Rapid water formation in diffuse interstellar clouds

25.06.2018 | Physics and Astronomy

Using tree-fall patterns to calculate tornado wind speed

25.06.2018 | Earth Sciences

'Stealth' material hides hot objects from infrared eyes

25.06.2018 | Power and Electrical Engineering

VideoLinks
Science & Research
Overview of more VideoLinks >>>