Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Cancer: Trapping the escape artist

12.05.2010
Researchers deliver a better understanding of anti-cell death proteins and a potential antagonist to defeat them

Cancer uses devious means to evade treatment and survive. One prime example is the way tumors express anti-cell death (anti-apoptotic) proteins to resist chemotherapy and radiation. However, the Pellecchia laboratory at Sanford-Burnham Medical Research Institute (Sanford-Burnham) has made two recent discoveries that may help curb these anti-apoptotic proteins and make current treatments more effective.

In a paper published online in the journal Cell Death and Disease on May 6, Maurizio Pellecchia, Ph.D., and colleagues outline how the six anti-apoptotic proteins in the Bcl-2 family are expressed differently in different cancers. As a result, any therapy designed to defeat these proteins, and thus enhance the cell death caused by most cancer treatments, must target the exact anti-apoptotic protein the cancer is expressing to be effective. However, even targeting the right protein might not be enough, as cancers often express more than one and can select for an "escape" protein and continue to thrive.

"You need to inhibit all six of the anti-apoptotic proteins members of the Bcl-2 family to have a compound with therapeutic potential," says Dr. Pellecchia.

Related research may have solved that problem. The Pellecchia laboratory, in collaboration with Coronado Biosciences and Virginia Commonwealth University, has been working on just such a pan-Bcl-2 inhibitor, and may have found it in a compound called BI-97C1. A paper published online on May 5 in the Journal of Medicinal Chemistry describes how BI-97C1, an optically pure derivative of a cottonseed extract called gossypol, inhibits all six anti-apoptotic Bcl -2 family proteins. This broad spectrum approach could make current cancer treatments more effective by controlling all six of these proteins and allowing malignant cells to die.

"When we tested BI-97C1 against human prostate cancer in mice, the cancer was completely wiped out, even with one tenth the dose we had used with previous compounds," says Dr. Pellecchia.

BI-97C1 is currently licensed to Coronado Biosciences, a private, clinical stage biotech company focused on new cancer treatments. Coronado's pan Bcl-2 inhibitor program is expected to enter clinical trials soon. "We have a very productive collaboration with Dr. Pellecchia," says R.J. Tesi, M.D., president and CEO of Coronado Biosciences. "His work demonstrates the importance of inhibiting all six Bcl-2 pro-survival proteins and demonstrates how rational drug design can optimize the development of targeted therapies to treat cancer. We are anxious to move BI-97C1 from pre-clinical development into patients."

About Sanford-Burnham Medical Research Institute

Sanford-Burnham Medical Research Institute (formerly Burnham Institute for Medical Research) is dedicated to discovering the fundamental molecular causes of disease and devising the innovative therapies of tomorrow. Sanford-Burnham, with operations in California and Florida, is one of the fastest-growing research institutes in the country. The Institute ranks among the top independent research institutions nationally for NIH grant funding and among the top organizations worldwide for its research impact. From 1999 – 2009, Sanford-Burnham ranked #1 worldwide among all types of organizations in the fields of biology and biochemistry for the impact of its research publications, defined by citations per publication, according to the Institute for Scientific Information. According to government statistics, Sanford-Burnham ranks #2 nationally among all organizations in capital efficiency of generating patents, defined by the number of patents issued per grant dollars awarded.

Sanford-Burnham utilizes a unique, collaborative approach to medical research and has established major research programs in cancer, neurodegeneration, diabetes, and infectious, inflammatory, and childhood diseases. The Institute is especially known for its world-class capabilities in stem cell research and drug discovery technologies. Sanford-Burnham is a nonprofit public benefit corporation. For more information, please visit www.sanfordburnham.org.

Josh Baxt | EurekAlert!
Further information:
http://www.sanfordburnham.org
http://www.coronadobiosciences.com

More articles from Life Sciences:

nachricht Symbiotic bacteria: from hitchhiker to beetle bodyguard
28.04.2017 | Johannes Gutenberg-Universität Mainz

nachricht Nose2Brain – Better Therapy for Multiple Sclerosis
28.04.2017 | Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>