Navigation Links
LSUHSC research discovers new targets for treatment of invasive breast cancer
Date:8/19/2009

New Orleans, LA Research led by Suresh Alahari, PhD, Associate Professor of Biochemistry and Molecular Biology at LSU Health Sciences Center New Orleans, has shown for the first time that a tiny piece of RNA appears to play a major role in the development of invasive breast cancer and identified a gene that appears to inhibit invasive breast cancer. The research is published in the August 21, 2009 issue of the Journal of Biological Chemistry.

The LSUHSC researchers are the first to demonstrate that miR-27b, a novel microRNA, not only inactivates the ST14 gene which they found suppresses the growth of breast tumor cells, but also that miR-27b stimulates the breast cancer to invade other cells.

MicroRNAs are a new class of small, single-stranded RNA molecules which play an important regulatory role in cell biology. They bind to target genes and decrease their function. MicroRNAs may act as oncogenes (a gene that contributes to cancer development) or tumor suppressors.

In this study working with a line of human breast cancer cells, Dr. Alahari's team found that aggressively invasive breast tumor cells contain a large quantity of miR-27b molecules, while normal cells do not. Further analysis revealed that miR-27b increases during cancer progression, in direct proportion to the decrease in function of the ST14 gene. They found that miR-27b promotes cell growth and cell invasion, suggesting that miR-27b acts as a breast cancer oncogene. They also found that ST14 inhibits both cell growth and cell invasion, suggesting that ST14 is a breast cancer tumor suppressor gene and that it may also serve as a marker for the early detection of breast cancer.

According to the American Cancer Society, an estimated 192,370 new cases of invasive breast cancer are expected to occur among women in the US during 2009; about 1,910 new cases are expected in men. Excluding cancers of the skin, breast cancer is the most frequently diagnosed cancer in women. An estimated 40,610 breast cancer deaths (40,170 women, 440 men) are expected in 2009. Breast cancer ranks second as a cause of cancer death in women (after lung cancer).

"We are in the process of confirming these results and these studies will reveal whether ST14 can reduce breast tumor growth in animals," notes Dr. Alahari, who is also a member of the LSUHSC Stanley S. Scott Cancer Center. "Blocking the miR-27b/ST14 interaction or rescuing ST14 function may be an effective therapeutic approach to advance breast cancer treatment."


'/>"/>

Contact: Leslie Capo
lcapo@lsuhsc.edu
504-568-4806
Louisiana State University Health Sciences Center
Source:Eurekalert

Related medicine news :

1. LSUHSC contributes to revealing targets to reduce racial disparity in prostate cancer deaths
2. LSUHSC research identifies enzyme that makes survival molecule for key vision cells
3. LSUHSC research finds single gene controls growth of some cancers
4. LSUHSC researchers first to document early signs for diabetes in kids as young as 7
5. LSUHSC dental researcher funded to develop better dental materials
6. LSUHSC research shows fish oil protects against diseases like Parkinsons
7. LSUHSC research may benefit diabetes by increasing understanding of how to control islet cell growth
8. LSUHSCs England leads development of new testing guidelines for common nerve disorder
9. LSUHSCs Dr. Xiao Cheng Wu co-authors annual report to the nation on cancer
10. LSUHSCs Fontham makes history
11. LSUHSC public health contributes to estimate of HPV-related cancers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/20/2017)... ... January 20, 2017 , ... Source Vitál Apothecary, a skin and body care ... announced the company had a successful visit to the 2017 ECRM Diet, Vitamin & ... that work in the nutritional, sports and health industries a chance to meet in ...
(Date:1/20/2017)... ... , ... Bionic Sports Nutrition LLC, an American company devoted to developing high-quality ... January ECRM Trade Show in Hilton Head, SC. , Bionic Sports Nutrition manufactures ... its products to all clients at reasonable prices. At the ECRM trade show, it ...
(Date:1/20/2017)... ... January 20, 2017 , ... ... to enhance people’s everyday lives, recently attended the January ECRM Trade Show in ... Science is known for its large range of supplements that keep the body ...
(Date:1/20/2017)... ... 2017 , ... Michael and Betsy Brauser celebrated 5 years of Betsy’s participation ... trial has been life-saving as she has been on the trial for more ... diagnosed with ovarian cancer in 2009. She underwent standard chemotherapy but a year later ...
(Date:1/20/2017)... New York, NY (PRWEB) , ... January 20, ... ... drinks – VW+ 001 and its sugar-free alternative VW+ 002. The drinks have ... the body with optimal conditions to perform during your workout. , After a ...
Breaking Medicine News(10 mins):
(Date:1/19/2017)... Jan. 19, 2017 Report Details ... Which areas are going to grow at the fastest ... 2026, assessing data, trends, opportunities and prospects. Our ... the most lucrative areas in the industry and the ... forecasted sales across the all the major categories of ...
(Date:1/19/2017)... , Jan. 19, 2017 This report ... current and future scenario of the global market. Large ... opioid consumption. Severe chronic constipation is a major side ... traditional laxatives. Hence, novel targeted therapy has been prescribed ... sufferers, launch of targeted medicines, and growing awareness about ...
(Date:1/19/2017)... -- Accuray Incorporated (Nasdaq: ARAY ) announced ... set the bar for excellence in customer satisfaction. The ... rating among radiation treatment delivery systems in the U.S., ... Briefing™. The most recent ratings trend also shows Accuray ... for 11 of the past 12 quarters. ...
Breaking Medicine Technology: