Navigation Links
Moffitt Cancer Center researchers say 1 specific microrna promotes tumor growth and cancer spread
Date:4/3/2013

Researchers at Moffitt Cancer Center have determined that the overexpression of microRNA-155 (miR-155), a short, single strand of ribonucleic acid encoded by the miR-155 host gene, promotes the growth of blood vessels in tumors, tumor inflammation, and metastasis. As a therapeutic target, miR-155 could potentially provide a new avenue of treatment when targeted with drugs to suppress its activity.

The study was published in an online issue of Oncogene in January.

MiR-155, which plays an important role in various physiological and pathological processes, is considered an indicator of poor prognosis for breast cancer patients when it is overexpressed. Controlling miR-155 expression could inhibit malignant growth, said the researchers.

"Our study shows that miR-155 is a driver of new blood vessel growth in tumors," said study lead author Jin Q. Cheng, M.D., Ph.D., senior member of the Cancer Biology and Evolution Program at Moffitt. "It also plays a critical role in metastasis, especially in triple-negative breast cancer. This makes miR-155 both a prognostic marker and a potential therapeutic drug target."

According to the researchers, several studies show that miR-155 is frequently increased in various human malignancies, including breast, lung, pancreatic and colon cancers. It also regulates a number of cell processes, including growth, survival, migration and invasion. Their study demonstrates that miR-155 promotes new blood vessel growth in breast cancer by targeting a natural tumor suppressor called VHL, part of an important cancer pathway for a cascade of events.

"Further studies could provide insight into the role of miR-155 in inflammation that leads to tumor progression," noted the researchers, who found elevated miR-155 in triple-negative breast cancer, a form of breast cancer that does not express the genes for estrogen, progesterone and human epidermal growth factor receptors.

"Our findings are important for a number of reasons," Cheng said. "We have shown that miR-155 targets and downregulates the tumor suppressor VHL and that miR-155 contributes to tumor growth and spread. This makes miR-155 a critical therapeutic target in breast cancer."


'/>"/>

Contact: Kim Polacek
kim.polacek@moffitt.org
813-745-7408
H. Lee Moffitt Cancer Center & Research Institute
Source:Eurekalert

Related medicine news :

1. Moffitt researchers find cancer therapies affect cognitive functioning among breast cancer survivors
2. Moffitt Cancer Center researchers: Quality of life as important as quantity of life
3. Moffitt Cancer Center researchers working at frontiers of melanoma research
4. Moffitt researchers find adolescents with cancer concerned about their future reproductive health
5. Moffitt researcher publishes book on nutritional management of cancer treatment effects
6. Moffitt researcher awarded GE grant to develop tool to detect breast cancer metastasis genetic risks
7. Researchers creating designer lymph nodes based on Moffitts Total Cancer Care initiative
8. Moffitt Cancer Center researchers identify drivers of sarcoma growth and survival
9. Moffitt Cancer Center researchers develop and test new anti-cancer vaccine
10. Moffitt researcher, colleagues find success with new immune approach to fighting some cancers
11. Moffitt researchers: Darwins principles say cancer will always evolve to resist treatment
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/27/2016)... ... May 27, 2016 , ... This campaign aims to provide ... we as a society can control and change. , As nearly 795,000 Americans suffering ... seconds within the United States. Plus, with an estimated 129,000 of these people dying ...
(Date:5/27/2016)... York, NY (PRWEB) , ... May 27, 2016 ... ... care world, this installment is bolstered by inspiring human interest stories, courtesy of ... the developing trends and tech within the industry, from leading advocates and associations—namely ...
(Date:5/26/2016)... ... ... Despite last week’s media reports hinting at a June rate hike after the Federal ... an interest rate increase, according to Rajeev Dhawan of the Economic Forecasting Center at ... Committee (FOMC) dot charts are of interest to the press for their noise potential,” ...
(Date:5/26/2016)... ... May 26, 2016 , ... Intalere, the ... and suppliers for its inaugural Member Conference at the Paris Hotel in Las ... the operational health of America’s healthcare providers. , The conference was highlighted by ...
(Date:5/26/2016)... ... May 26, 2016 , ... The Woodlands at John Knox Village , ... of care for living and healing, celebrated its grand opening, today. The Woodlands at ... Home provided by Empowered Staff. , “This is an incredibly fulfilling time for John ...
Breaking Medicine News(10 mins):
(Date:5/27/2016)... 2016 Kitov Pharmaceuticals ... on late-stage drug development, today announced the completion ... pivotal batches required for registration of KIT-302 with ... follows Kitov,s announcement in December 2015, ... its primary efficacy endpoint. "We are ...
(Date:5/26/2016)... , May 26, 2016 ... Associated With Both Cost Savings and Overall ... plc (LSE: BTG), an international specialist healthcare company, ... at the 21st Annual Meeting of ISPOR (International ... treatment of hepatocellular carcinoma (HCC) using yttrium-90 glass ...
(Date:5/25/2016)... GERMANTOWN, Maryland , May 25, 2016 /PRNewswire/ ... dringenden Bedarf zur Steuerung ... N.V. (NASDAQ: QGEN ; Frankfurt Prime ... Entwicklungsvereinbarung mit Therawis Diagnostics GmbH zur Entwicklung und ... sein. Ein erstes Projekt wird die Entwicklung und ...
Breaking Medicine Technology: