Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Study finds potential way to improve cancer immunotherapy

05.09.2003


Drugs that contain antibodies are a standard part of therapy for many cancers, but these antibodies do not always work. A finding by researchers with the Holden Comprehensive Cancer Center at the University of Iowa may help make the antibodies more effective by boosting the power of white blood cells, which play a role in fighting cancer.



One way that antibodies ideally function is to stick to cancer cells and signal various types of white blood cells to kill the cancer cells. The UI Holden Center team and colleagues used mouse cell lines that mimic human conditions to learn how different types of white blood cells work with antibodies and contribute to killing cancer cells. The team used different classes of an immune stimulant known as CpG ODN (CpG oligodeoxynucleotide) to encourage different types of white blood cells, either separately or together, to work with antibodies to kill cancer.

The new information could help doctors make antibodies more effective by providing a way to gear up specific types of white blood cells -- natural killer cells and granulocytes -- at the same time that patients receive a dose of anti-cancer antibodies, said George Weiner, M.D., UI professor of internal medicine, director of the Holden Comprehensive Cancer Center and principal investigator for the study. The findings appear in the Sept. 1 issue of the journal Cancer Research.


"Previous research suggested that different white blood cells can kill cancer cells," Weiner said. "We found that by selecting other agents as stimulants, we can specially direct one type or another of white blood cells to do the killing. It’s an extra measure of control for the white blood cells that you specifically want to activate to destroy the cancer cells."

Weiner said the finding potentially could lead to improved therapies for patients. The UI currently is evaluating this approach in clinical trials.

Monoclonal antibodies currently used in cancer therapies include rituximab (Rituxan) for certain types of non-Hodgkin’s lymphoma and trastuzumab (Herceptin) for breast cancer.

People do not normally have these antibodies in their system. The cancer-fighting versions are based on natural antibodies and designed to react with cancer cells, Weiner said. With cancers, the immune system fails to recognize tumors as invaders -- that is where drugs can step in and make a difference.

"Using antibodies is a way of taking the immune system and redirecting it toward killing the cancer," Weiner said.

Non-Hodgkin’s lymphoma is cancer of the lymphatic system, which normally fights infection. The lymphatic system includes lymph nodes and parts of the body that include lymphatic tissues: the spleen, thymus gland, bone marrow, adenoids and tonsils.


###
Contributors to the study included investigators at the University Medical Center Utrecht in the Netherlands.

Funding for the study included a Specialized Programs of Research Excellence (SPORE) grant from the National Cancer Institute (NCI). For information on that grant, visit http://www.uiowa.edu/~ournews/2002/september/0918SPORE.html. The study also included support from Coley Pharmaceutical Group. Weiner serves as a consultant for Coley.

The Holden Comprehensive Cancer Center is Iowa’s only National Cancer Institute (NCI)-designated comprehensive cancer center. NCI-designated comprehensive cancer centers are recognized as the leaders in developing new approaches to cancer prevention and cancer care, conducting leading edge research and educating the public about cancer.

University of Iowa Health Care describes the partnership between the UI Roy J. and Lucille A. Carver College of Medicine and UI Hospitals and Clinics and the patient care, medical education and research programs and services they provide. Visit UI Health Care online at www.uihealthcare.com.

Becky Soglin | EurekAlert!
Further information:
http://www.uiowa.edu/~ournews/2002/september/0918SPORE.html
http://www.uihealthcare.com

More articles from Health and Medicine:

nachricht Biofilm discovery suggests new way to prevent dangerous infections
23.05.2017 | University of Texas at Austin

nachricht Another reason to exercise: Burning bone fat -- a key to better bone health
19.05.2017 | University of North Carolina Health Care

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: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

Physicists discover mechanism behind granular capillary effect

24.05.2017 | Physics and Astronomy

Measured for the first time: Direction of light waves changed by quantum effect

24.05.2017 | Physics and Astronomy

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>