Navigation Links
Researchers find pathway that drives spread of pediatric bone cancer in preclinical studies
Date:10/25/2010

BOSTON - Researchers have identified an important signaling pathway that, when blocked, significantly decreases the spread of pediatric bone cancer.

In their study, researchers at The University of Texas MD Anderson Children's Cancer Hospital in Houston found that blocking the Notch pathway in mice decreased metastases in the lungs 15-fold. The results of a series of pre-clinical studies were reported Sunday in an oral presentation at the 42nd Congress of the International Society of Pediatric Oncology.

Their research showed that the Notch pathway and Hes1 gene play a key role in promoting the metastasis of osteosarcoma, the most common form of bone cancer in children.

Approximately 400 children and teens under the age of 20 are diagnosed with osteosarcoma annually, and the majority present with cancer that has already metastasized. The primary destination for the cancer to spread is to the lungs, which accounts for more than 35 percent of pediatric patients dying from osteosarcoma.

"Knowing the initial results from blocking Notch in mice, we are encouraged to keep investigating the entire metastasis process, so we can find additional therapies and targets to prevent cancer from spreading and growing," said Dennis Hughes, M.D., Ph.D., lead investigator and assistant professor at MD Anderson Children's Cancer Hospital.

In addition to Notch and Hes1's role in metastasis, Hughes believes that their expression can be correlated with a patient's prognosis. Hughes conducted a small retrospective study looking at patient samples, and 39 percent of patients with high expression levels of Hes1 survived 10 years versus the 60 percent survival rate for patients who had lower levels.

Ongoing research is studying the impact of various therapies, such as Gamma-secretase inhibitors and histone deacetylase (HDAC) inhibitors, that regulate the Notch pathway and have the potential to affect cancer cell survival. Hughes found that HDAC inhibitors actually increased the Notch pathway in osteosarcoma cells that had low Hes1 expression, which was an unfavorable response in that sample group. However, for cells that presented with high Hes1 expression, where Notch was already maximized, the HDAC inhibitors led to osteosarcoma cell death.

"By defining vital signaling pathways in bone sarcomas, we hope small molecule inhibitors can be applied, leading to longer survival and reducing morbidity and late effects from intensive chemotherapy," said Hughes.

"We also hope these new findings may apply to other solid tumors such as breast, prostate, colon and more, but we'll need additional research to determine whether or not that is the case," he added.


'/>"/>

Contact: Sara Farris
sfarris@mdanderson.org
713-792-9133
University of Texas M. D. Anderson Cancer Center
Source:Eurekalert  

Related medicine news :

1. Researchers map all the fragile sites of the yeast Saccharomyces cerevisiaes genome
2. UH Case Medical Center researchers publish promising findings for advanced cervical cancer
3. Researchers discover new way to kill pediatric brain tumors
4. Researchers Who Discovered First Genes for Stuttering will Present Findings to the National Stuttering Association
5. Researchers create drug to keep tumor growth switched off
6. Urine protein test might help diagnose kidney damage from lupus, UT Southwestern researchers find
7. GUMC researchers say flower power may reduce resistance to breast cancer drug tamoxifen
8. Clemson researchers develop hands-free texting application
9. Researchers find biomarkers in saliva for detection of early-stage pancreatic cancer
10. Researchers chart genomic map spanning over 2 dozen cancers
11. Researchers discover second protective role for tumor-suppressor
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers find pathway that drives spread of pediatric bone cancer in preclinical studies
(Date:6/26/2016)... ... June 26, 2016 , ... Pixel Film Studios Released ProSlice ... "Film editors can give their videos a whole new perspective by using the ... of Pixel Film Studios. , ProSlice Levels contains over 30 Different presets to ...
(Date:6/25/2016)... , ... June 25, 2016 , ... ... policy issues and applications at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at ... on several important health care topics including advance care planning, healthcare costs and ...
(Date:6/25/2016)... , ... June 25, 2016 , ... First Choice ... States, named Dr. Sesan Ogunleye, as the Medical Director of its new Mesquite-Samuell Farm ... Medical Director of our new Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical ...
(Date:6/25/2016)... Canada (PRWEB) , ... June 25, 2016 , ... Conventional ... pursuit of success. In terms of the latter, setting the bar too high can ... risk more than just slow progress toward their goal. , Research from ...
(Date:6/24/2016)... ... ... Marcy was in a crisis. Her son James, eight, was out of control. Prone to ... , “When something upset him, he couldn’t control his emotions,” remembers Marcy. “If there ... my other children and say he was going to kill them. If we were ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... -- MedSource announced today that it has selected Datatrial,s ... choice.  This latest decision demonstrates MedSource,s commitment to ... by offering a state-of-the-art electronic data capture (EDC) ... the EDC platform of choice in exchange for ... long been a preferred EDC platform by our ...
(Date:6/23/2016)... , June 23, 2016  In a startling report released ... failing their residents by lacking a comprehensive, proven plan to eliminate ... a definitive ranking of how states are tackling the worst drug ... only four states – Kentucky , ... Vermont . Of the 28 failing states, three – ...
(Date:6/23/2016)... , June 23, 2016 Research and ... News Issue 52" report to their offering. ... influenza treatment creates a favourable commercial environment for MedImmune to ... patient base that will serve to drive considerable growth for ... would serve to cap sales considerably, but development is still ...
Breaking Medicine Technology: