Navigation Links
Gene fusions may be the 'smoking gun' in prostate cancer development, U-M study finds
Date:5/18/2010

ANN ARBOR, Mich. Prostate cancer treatments that target the hormone androgen and its receptor may be going after the wrong source, according to a new study. Researchers have found that when two genes fuse together to cause prostate cancer, it blocks the receptor for the hormone androgen, preventing prostate cells from developing normally.

The study, from the University of Michigan Comprehensive Cancer Center, suggests that the gene fusion not the androgen receptor is a more specific "bad actor" in prostate cancer and is the real smoking gun that should be targeted by treatments.

"We need to begin to think about targeting prostate cancer by targeting the gene fusion, and not confining our approaches to androgen receptor. If we're going to find a more durable therapy, we need to get at the gene fusion," says study author Arul Chinnaiyan, M.D. Ph.D., director of the Michigan Center for Translational Pathology and S.P. Hicks Endowed Professor of Pathology at the U-M Medical School. Chinnaiyan is also a Howard Hughes Medical Institute investigator and an American Cancer Society research professor.

The study is featured on the cover of the May 18 issue of Cancer Cell.

Treatments for prostate cancer typically include drugs to moderate androgen, a male hormone that controls the normal growth of the prostate. These drugs typically work at first, but over time the cancer cells become resistant to the therapy and the cancer returns. Because it's no longer responsive to currently available hormone deprivation therapies, the recurrent cancer is usually more difficult to treat.

In 2005, Chinnaiyan and his team identified a prostate-specific gene called TMPRSS2 that fuses with a cancer-causing gene called ERG. The team's earlier research has shown that this gene fusion acts as an "on switch" to trigger prostate cancer.

This new study used sophisticated sequencing technologies to map the genome-wide location of androgen receptor and the TMPRSS2-ERG gene fusion in prostate cancer cells. The researchers found that the gene fusion blocks the androgen receptor directly and also interferes with it at the genetic level to prevent normal androgen receptor signaling. With the androgen receptor blocked, prostate cells stop growing and developing normally, allowing cancer to develop.

"Our study shows the underlying problem in prostate cancer is the presence of a gene fusion, not the androgen receptor. In many contexts, androgen signaling is actually a good thing, but the presence of the gene fusion blocks androgen receptor signaling, which alters normal prostate cell development. While current treatments for advanced prostate cancer are focused on hormone deprivation and are quite effective, at least initially, future therapies need to be developed that target the prostate cancer gene fusion," Chinnaiyan says.


'/>"/>

Contact: Nicole Fawcett
nfawcett@umich.edu
734-764-2220
University of Michigan Health System
Source:Eurekalert  

Related biology news :

1. Inflammation triggers cell fusions that could protect neurons, Stanford research shows
2. Children living in apartments with nonsmoking adults still exposed
3. Smoking during radiation therapy for head and neck cancers linked to poorer outcomes
4. GUMC to develop smoking cessation aids based on unconventional nicotine addiction theory
5. Obesity and passive smoking reduce oxygen supply to unborn baby
6. Acculturation affects smoking cessation success among Latinos
7. Cigarette smoking increases colorectal cancer risk
8. Second-hand smoking results in liver disease, study finds
9. Study: Smoking may worsen malnutrition in developing nations
10. New mediator of smoking recruits
11. Smoking during pregnancy may impair thyroid function of mom and fetus
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Gene fusions may be the 'smoking gun' in prostate cancer development, U-M study finds
(Date:4/11/2017)... Research and Markets has announced the addition of the ... ... grow at a CAGR of 30.37% during the period 2017-2021. ... prepared based on an in-depth market analysis with inputs from industry ... over the coming years. The report also includes a discussion of ...
(Date:4/5/2017)... -- Today HYPR Corp. , leading innovator in ... the HYPR platform is officially FIDO® Certified . ... that empowers biometric authentication across Fortune 500 enterprises and ... 15 million users across the financial services industry, however ... suites and physical access represent a growing portion of ...
(Date:3/30/2017)... , March 30, 2017 The research team ... for three-dimensional (3D) fingerprint identification by adopting ground breaking 3D fingerprint ... new realm of speed and accuracy for use in identification, crime ... affordable cost. ... A ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... ... July 20, 2017 , ... Crucial Data Solutions ... and study participants truly unified. TrialKit, a native mobile app, empowers investigators and ... research studies entirely on mobile devices. With TrialKit, clinical researchers can utilize Core ...
(Date:7/18/2017)... ... July 18, 2017 , ... Genedata, a leading provider of ... technology company, has implemented Genedata Biologics ™ to scale-up their bispecific antibody ... and Neurodegenerative Diseases. , The need to systematically evaluate large panels of ...
(Date:7/18/2017)... Washington, DC (PRWEB) , ... July 18, 2017 ... ... for the Allotrope Framework, and has released the first phase of the Allotrope ... Bio-IT World’s Best Practices Awards were created to “not only elevate the critical ...
(Date:7/17/2017)... ... ... The Academy of Model Aeronautics (AMA) will host Aviation Adventure Day on ... from 9 a.m. to 2 p.m. at the International Aeromodeling Center in Muncie, Indiana. ... Day will be packed with entertaining activities for the entire family. Attendees will learn ...
Breaking Biology Technology: