Navigation Links
The factor that could influence future breast cancer treatment
Date:12/27/2012

Australian scientists have shown in the laboratory how a 'transcription factor' causes breast cancer cells to develop an aggressive subtype that lacks sensitivity to estrogen and does not respond to known anti-estrogen therapies. The research, which has significant implications for breast cancer treatment, is published December 27 in the open access journal PLOS Biology.

Transcription factors are molecules that switch genes on or off. In this case, the transcription factor known as 'ELF5' inhibits sensitivity to estrogen very early in the life of a breast cancer cell. In 2008, Professor Chris Ormandy from the Garvan Institute of Medical Research in Sydney, Australia, showed that ELF5 was responsible for the development of breast progenitor cells into the estrogen-receptor-negative cells that produce milk in the breast during pregnancy.

In the current study, a team led by Ormandy in collaboration with Drs Maria Kalyga and David Gallego-Ortega, has shown that the same molecular decision occurs in breast cancer and that ELF5 has the ability to change an existing tumour into an estrogen-insensitive tumour.

"This work tells us that cancers which become refractory to anti-estrogen treatment often do so by elevating their levels of ELF5 and becoming functionally estrogen receptor negative," said Ormandy.

The team has also described the genetic mechanisms by which ELF5 opposes the action of estrogen, and has shown that it is possible to alter the subtype of breast cancer by manipulating ELF5 levels in cancer cells in the laboratory.

"This raises the therapeutic option of manipulating ELF5 levels to treat breast cancer. As ELF5 is intracellular, this could possibly be done with small molecule therapies that penetrate cells and target protein-to-protein interactions, or with small inhibitory RNAs. There is also the possibility of testing ELF5 levels in tumours to predict response to treatment and therefore guide treatment decisions."

"Our key discovery here is that by simply manipulating one transcription factor we can change the subtype of breast cancer."


'/>"/>
Contact: Bryan Ghosh
bghosh@plos.org
44-122-344-2837
Public Library of Science
Source:Eurekalert

Related medicine news :

1. The factor that could determine future breast cancer treatment
2. Tips For Weight Loss from Health Reviews - How the “Fat Loss Factor” Helps People Lose Weight Successfully
3. Parents addiction, unemployment and divorce are risk factors for childhood abuse
4. Stemedica and Scripps to Jointly Investigate Therapeutic Effect of Ischemia Tolerant Mesenchymal Stem Cells (itMSC) and Stem Cell Factors in Lung Injury and Sepsis
5. Cultural, social factors identified as barriers to minority participation in stem cell donation
6. Why are kids in asthma hotspots in NYC more likely to visit the ER? Exercise may be a factor
7. Study shows COPD is not independent risk factor for lung cancer
8. Moffitt researchers say effective immunotherapy for melanoma hinges on blocking suppressive factors
9. Fat Loss Factor Program Review of Dr Charles Livingston's Weight Loss Plan Revealed
10. Depression a Key Factor in Health of Parkinsons Patients: Study
11. The Journal of Nursing Research receives impact factor ranking
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... 25, 2016 , ... Experts from the American Institutes for ... Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. , AIR ... care planning, healthcare costs and patient and family engagement. , AIR researchers will ...
(Date:6/25/2016)... ... June 25, 2016 , ... First Choice Emergency Room , ... Sesan Ogunleye, as the Medical Director of its new Mesquite-Samuell Farm facility. , ... our new Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical Director of First ...
(Date:6/25/2016)... ... 2016 , ... Conventional wisdom preaches the benefits of moderation, whether it’s a ... the bar too high can result in disappointment, perhaps even self-loathing. However, those who ... , Research from PsychTests.com reveals that behind the tendency to set ...
(Date:6/24/2016)... ... ... was in a crisis. Her son James, eight, was out of control. Prone to extreme ... “When something upset him, he couldn’t control his emotions,” remembers Marcy. “If there was ... other children and say he was going to kill them. If we were driving ...
(Date:6/24/2016)... San Diego, CA (PRWEB) , ... June 24, 2016 , ... ... up with the American Cancer Society and the Road To Recovery® program to drive ... care to seniors and other adults to ensure the highest quality of life and ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... -- Research and Markets has announced the addition ... - Forecast to 2022" report to their offering. ... to date financial data derived from varied research sources to ... potential impact on the market during the next five years, ... of sub markets, regional and country level analysis. The report ...
(Date:6/23/2016)... RIDGE, Ill. and INDIANAPOLIS ... of students receiving a Lilly Diabetes Tomorrow,s Leaders Scholarship ... The 2016 scholarship winners, announced today online at ... to let type 1 diabetes stand in the way ... Diabetes has supported the Foundation,s scholarship program since 2012, ...
(Date:6/23/2016)... -- Research and Markets has announced the ... (United States, China, Japan, Brazil, United Kingdom, Germany, France, ... Surgical Procedure Volumes: ... provides surgical procedure volume data in a geographic context. ... analysis of growth drivers and inhibitors, including world population ...
Breaking Medicine Technology: