Navigation Links
New hope for hormone resistant breast cancer
Date:7/22/2013

A new finding provides fresh hope for the millions of women worldwide with oestrogen receptor positive breast cancer. Australian scientists have shown that a specific change, which occurs when tumours become resistant to anti-oestrogen therapy, might make the cancers susceptible to treatment with chemotherapy drugs.

Seventy percent of breast cancer patients have oestrogen receptor positive cancer, and most patients respond well to anti-oestrogen therapies, for a few years at least. Within 15 years, however, 50% will relapse and eventually die from the disease.

Dr Andrew Stone, Professor Susan Clark and Professor Liz Musgrove, from Sydney's Garvan Institute of Medical Research, in collaboration with scientists from Cardiff University, have demonstrated that the BCL-2 gene becomes epigenetically 'silenced' in resistant tumours. This process is potentially detectable in the blood, providing a diagnostic marker. Their findings are now online in the international journal Molecular Cancer Therapetics.

Epigenetics involves biochemical changes in our cells that directly impact our DNA, making some genes active, while silencing others. Epigenetic events include DNA methylation, when a methyl group - one carbon atom and three hydrogen atoms - attaches to a gene, determining the extent to which it is 'switched on' or 'switched off'.

Dr Stone and colleagues have shown in human disease, as well as in several different cell models, that BCL-2 is silenced in oestrogen-resistant tumours by DNA methylation.

"The main purpose of the BCL-2 gene is to keep cells alive, so when the gene is silenced, cells become more vulnerable to chemotherapy," said Dr Stone.

"The next step will be to test our findings in clinical studies. We propose that if the BCL-2 gene is silenced, patients with oestrogen receptor positive breast cancer would benefit from combination therapy. In other words, tamoxifen could be used in combination with a chemotherapy drug, to kill off vulnerable tumour cells."

"Excitingly, this is something that could be implemented into clinical practice very quickly, since the technology now exists to profile methylation of BCL-2 in all patients both oestrogen responsive and oestrogen resistant patients. In addition, the proposed chemotherapy drugs are already in use."

"If such a test were to be implemented, we believe it could help patients much earlier hopefully shutting down tumours at an early stage."


'/>"/>

Contact: Alison Heather
a.heather@garvan.org.au
61-292-958-128
Garvan Institute of Medical Research
Source:Eurekalert

Related medicine news :

1. Study links cardiac hormone-related inflammatory pathway with tumor growth
2. Osteoporosis drug may help treat advanced hormone-sensitive breast cancer
3. Hormones for Digestion and Weight Loss Article and Video Published by BetterDigestion.org
4. The Gluten Free Society Launches Hormone Awareness Campaign
5. Hormone replacement therapy -- clarity at last!
6. XRMD: Beyond AREDS2: Vision Improvement using Hormones, Genetics, Methylation, Nutrition and Anti-Oxidative Therapy
7. Bioidentical Hormones Offer Natural Solution for Hormone Imbalance in Menopausal Women; Now Available at Women's Excellence in Menopause near Auburn Hills, Michigan
8. New HGH.com Web Site - Purchasing Human Growth Hormone and Bodybuilding Supplements Just Got Easier
9. Women's Excellence in Menopause Now Offering Treatment Options for Decreased Sex Drive near Rochester Hills, Michigan; Natural Therapy Available via Bioidentical Hormones
10. New Article and Video Describe How Hormones Help Lose Weight Published by BetterDigestion.org
11. Hormone Shows Potential as Diabetes Treatment in Mice
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... October 13, 2017 , ... Ellevate Network, the leading network for professional ... action towards gender equality at their inaugural Summit in New York City in June. ... a social audience of over 3 million. To watch the Mobilize Women video, ...
(Date:10/13/2017)... ... , ... “The Journey: From the Mountains to the Mission Field”: the story ... the Philippines. “The Journey: From the Mountains to the Mission Field” is the creation ... has taught all ages and currently teaches a class of ladies at her church, ...
(Date:10/12/2017)... Wis. (PRWEB) , ... October 12, 2017 , ... ... standard products to meet the demand of today’s consumer and regulatory authorities worldwide. ... of probiotic experts and tested to meet the highest standard. , These ...
(Date:10/12/2017)... ... October 12, 2017 , ... Dr. Parsa Mohebi, the ... medical article to the newly revamped Cosmetic Town journal section, featuring ... transplant procedure known as Follicular Unit Extraction (FUE). , Dr. Mohebi ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... first interactive health literacy software tool, and the Cancer Patient Education Network (CPEN), ... patient education, today announce a new strategic alliance. , As CPEN’s strategic ...
Breaking Medicine News(10 mins):
(Date:10/7/2017)... 2017   Provista, a proven leader in ... in purchasing power, today announced a new resource area ... Newsroom is the online home for case studies, ... bios, news releases, slideshows and events. ... of resources at their fingertips, viewers can also watch ...
(Date:10/4/2017)... Mass. , Oct. 4, 2017  According to the Centers for ... the end of October . PhysicianOne Urgent Care is helping communities across ... Westchester, NY , by offering no-cost* flu shots through the ... as mandated by certain health insurance regulations. ... The best time to get a flu shot is by the ...
(Date:10/2/2017)... , Oct. 2, 2017  Eli Lilly and Company ... results for the third quarter of 2017 on Tuesday, ... call on that day with the investment community and ... The conference call will begin at 9 a.m. ... access a live webcast of the conference call through ...
Breaking Medicine Technology: