Navigation Links
Scientists slow brain tumor growth in mice
Date:5/13/2014

Much like using dimmer switches to brighten or darken rooms, biochemists have identified a protein that can be used to slow down or speed up the growth of brain tumors in mice.

Brain and other nervous system cancers are expected to claim 14,320 lives in the United States this year.

The results of the preclinical study led by Eric J. Wagner, Ph.D., and Ann-Bin Shyu, Ph.D., of The University of Texas Health Science Center at Houston (UTHealth) and Wei Li, Ph.D., of Baylor College of Medicine appear in the Advance Online Publication of the journal Nature.

"Our work could lead to the development of a novel therapeutic target that might slow down tumor progression," said Wagner, assistant professor in the Department of Biochemistry and Molecular Biology at the UTHealth Medical School.

Shyu, professor and holder of the Jesse H. Jones Chair in Molecular Biology at the UTHealth Medical School, added, "This link to brain tumors wasn't previously known."

"Its role in brain tumor progression was first found through big data computational analysis, then followed by animal-based testing. This is an unusual model for biomedical research, but is certainly more powerful, and may lead to the discovery of more drug targets," said Li, an associate professor in the Dan L. Duncan Cancer Center and Department of Molecular and Cellular Biology at Baylor.

Wagner, Shyu, Li and their colleagues discovered a way to slow tumor growth in a mouse model of brain cancer by altering the process by which genes are converted into proteins.

Appropriately called messenger RNA for short, these molecules take the information inside genes and use it to make body tissues. While it was known that the messenger RNA molecules associated with the cancerous cells were shorter than those with healthy cells, the mechanism by which this occurred was not understood.

The research team discovered that a protein called CFIm25 is critical to keeping messenger RNA long in healthy cells and that its reduction promotes tumor growth. The key research finding in this study was that restoring CFIm25 levels in brain tumors dramatically reduced their growth.

"Understanding how messenger RNA length is regulated will allow researchers to begin to develop new strategies aimed at interfering with the process that causes unusual messenger RNA shortening during the formation of tumors," Wagner said.

Additional preclinical tests are needed before the strategy can be evaluated in humans.

"The work described in the Nature paper by Drs. Wagner and Shyu stems from a high-risk/high-impact Cancer Prevention & Research Institute of Texas (CPRIT) proposal they submitted together and received several years ago," said Rod Kellems, Ph.D., professor and chairman of the Department of Biochemistry and Molecular Biology at the UTHealth Medical School.

"Their research is of fundamental biological importance in that it seeks to understand the role of messenger RNA length regulation in gene expression," Kellems said. "Using a sophisticated combination of biochemistry, genetics and bioinformatics, their research uncovered an important role for a specific protein that is linked to glioblastoma tumor suppression."

Other UTHealth contributors include postdoctoral fellow Chioniso P. Masamha, Ph.D.; research associate Todd R. Albrecht; and neurosurgery associate professor Min Li, Ph.D., along with a postdoctoral fellow in his lab, Jingxuan Yang, Ph.D.

"Grade IV astrocytomas (GBM) are the most frequent and malignant form of brain tumor, with a median survival time of only 14.6 months. The mechanisms underlying gliomagenesis remain largely unknown, and limited choices are available for patients with GBM," said Min Li, director of the Cancer Research Program in the Vivian L. Smith Department of Neurosurgery at UTHealth and a member of the Mischer Neuroscience Institute at Memorial Hermann-Texas Medical Center.


'/>"/>

Contact: Robert Cahill
Robert.Cahill@uth.tmc.edu
713-500-3030
University of Texas Health Science Center at Houston
Source:Eurekalert  

Related medicine news :

1. UBC scientists find new way to mobilize immune system against viruses
2. Dartmouth scientists identify genetic blueprint for cancerous tumors of the appendix
3. Scientists decode epigenetic mechanisms distinguishing stem cell function and blood cancer
4. Scientists identify new protein in the neurological disorder dystonia
5. Scientists awarded grant to develop diagnostics for cancer, rheumatoid arthritis, colitis
6. Norwegian neuroscientists elected to National Academy of Sciences
7. NIH scientists establish monkey model of hantavirus disease
8. Stanford scientists create circuit board modeled on the human brain
9. A civil war inside our cells: Scientists show how our bodies fight off jumping genes
10. Scientists find way to target cells resistant to chemo
11. Scientists identify cancer specific cell for potential treatment of gastric cancer
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists slow brain tumor growth in mice
(Date:2/12/2016)... ... February 12, 2016 , ... The law firm of Morrow, ... Parishes. The purpose of these scholarships is to encourage applicants to pursue a ... seek employment within these two parishes. , “We have available jobs in St. ...
(Date:2/12/2016)... ... 2016 , ... CDRH Enforcement Trends: , Back to the Future , Feb. 25, 2016 — ... Churchill said, “Those who don’t learn from history are doomed to repeat it.” , An ... knocking this year. But that takes time. , Take a close look at the ...
(Date:2/12/2016)... (PRWEB) , ... February 12, 2016 , ... As a ... hectic schedule, a demanding job, and no time to decompress, Rabinowitz found herself drawn ... herself to meditation for its impact on her life, implementing a 20-minute-per-day meditation practice ...
(Date:2/12/2016)... ... February 12, 2016 , ... The ... Zuckerberg San Francisco General Hospital on April 5-7. The series is a multi-day, ... new habits. The workshops cover a broad range of topics, including coaching skills, ...
(Date:2/12/2016)... , ... February 12, 2016 , ... Fisher House Foundation ... Mayor John J. Lee, Nevada Military Support Alliance president Scott Bensing, and Peggy Kearns ... the VA Southern Nevada Healthcare System. This will be the first Fisher House ...
Breaking Medicine News(10 mins):
(Date:2/12/2016)... On Thursday, Feb. 11, 2016, surgeons at ... North Austin Medical Center successfully completed the first robotic ... Surgical System with Trumpf Medical,s advanced operating table, ... , M.D., colorectal surgeon at the Texas Institute for ... Motion technology, which seamlessly combines the da Vinci Xi ...
(Date:2/12/2016)... 12, 2016  Eli Lilly and Company (NYSE: LLY ... Alimta® (pemetrexed disodium) vitamin regimen patent would not presently be ... France , Italy and ... product only with dextrose solution.  --> ... Court of Appeal held that Lilly,s patent would be indirectly ...
(Date:2/12/2016)... Ga. , Feb. 12 2016  OMS Supply, ... dental and medical practitioners, announced today the recent launching ... offers visitors a variety of features that enhance the ... oral surgery supplies. --> ... is a fairly new company that started in early ...
Breaking Medicine Technology: