Featured Research

from universities, journals, and other organizations

Potential clue associated with aggressive prostate cancer identified

Date:
August 19, 2013
Source:
Rutgers Robert Wood Johnson Medical School
Summary:
Researchers who are studying the underlying mechanisms that cause invasive tumor growth have identified a key transcription factor, a protein which regulates the flow of information from DNA, that is over-produced in treatment-resistant prostate cancer, as well as the two protein kinases that trigger the process.

Prostate cancer is one of the most common forms of cancer in men and the leading cause of cancer deaths in white, African-American and Hispanic men, according to the Centers for Disease Control. Current treatment of prostate cancer targets androgens, hormones which promote the growth and spread of cancer cells. However, it remains unclear why, despite treatment, some prostate cancers progress and may become fatal. Researchers at Robert Wood Johnson Medical School, part of Rutgers, The State University of New Jersey, who are studying the underlying mechanisms that cause invasive tumor growth have identified a key transcription factor, a protein which regulates the flow of information from DNA, that is over-produced in treatment-resistant prostate cancer, as well as the two protein kinases that trigger the process.

This finding, published and highlighted on the cover of the July issue of Molecular Cancer Research, a journal of the American Association for Cancer Research (AACR) could be utilized to develop treatments for prostate cancer that is resistant to current therapies.

The research team, led by Joseph Fondell, PhD, associate professor of pharmacology, found that in clinically localized human prostate cancer -- cancer that is confined to the prostate and pelvic area -- the key transcription factor termed MED1 is overexpressed, meaning that significantly more MED1 is produced than is typical. According to Fondell, the finding potentially could be used as a biomarker in cancer screenings, indicating to oncologists that the prostate cancer has become aggressive. "As MED1 is a known co-activator of androgen receptors, the overexpression of MED1 is thought to facilitate alternative gene expression patterns that drive treatment-resistant cancer cell growth in the prostate," Fondell said.

"Our study showed for the first time that MED1 expression is elevated in malignant cells of a statistically significant number of patients with clinical prostate cancer and that this overexpression correlates with an increase in cancer cell growth and invasiveness," said Feng Jin, PhD, a former graduate student in Fondell's lab and first author on the study. "In addition to accelerated tumor growth, our study showed that overexpression of MED1 may also be involved with inflammation of the prostate."

Further study of the process using mouse models that mimic human prostate cancer, showed that two protein kinases, ERK and PI3K/AKT, were overactive and responsible for MED1 overproduction, ultimately accelerating the progression and spread of prostate cancer. "Whereas the current treatment approach for prostate cancer is to prohibit androgen production and signaling, our findings indicate that MED1 could represent a novel target for new therapies that stop the process at the molecular level, before prostate cancer can progress to an advanced stage," added Fondell, who also is a member of Rutgers Cancer Institute of New Jersey.

The research was supported by Department of Defense Prostate Cancer Research Program Award W81XWH-10-1-0227 (J.D. Fondell) and conducted in collaboration with researchers at Herbert Irving Comprehensive Cancer Center, Columbia University College of Physicians and Surgeons, New York, NY, and Baylor College of Medicine, Houston, TX.


Story Source:

The above story is based on materials provided by Rutgers Robert Wood Johnson Medical School. Note: Materials may be edited for content and length.


Journal Reference:

  1. F. Jin, S. Irshad, W. Yu, M. Belakavadi, M. Chekmareva, M. M. Ittmann, C. Abate-Shen, J. D. Fondell. ERK and AKT Signaling Drive MED1 Overexpression in Prostate Cancer in Association with Elevated Proliferation and Tumorigenicity. Molecular Cancer Research, 2013; 11 (7): 736 DOI: 10.1158/1541-7786.MCR-12-0618

Cite This Page:

Rutgers Robert Wood Johnson Medical School. "Potential clue associated with aggressive prostate cancer identified." ScienceDaily. ScienceDaily, 19 August 2013. <www.sciencedaily.com/releases/2013/08/130819162643.htm>.
Rutgers Robert Wood Johnson Medical School. (2013, August 19). Potential clue associated with aggressive prostate cancer identified. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/2013/08/130819162643.htm
Rutgers Robert Wood Johnson Medical School. "Potential clue associated with aggressive prostate cancer identified." ScienceDaily. www.sciencedaily.com/releases/2013/08/130819162643.htm (accessed April 20, 2014).

Share This



More Health & Medicine News

Sunday, April 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nine-Month-Old Baby Can't Open His Mouth

Nine-Month-Old Baby Can't Open His Mouth

Newsy (Apr. 19, 2014) Nine-month-old Wyatt Scott was born with a rare disorder called congenital trismus, which prevents him from opening his mouth. Video provided by Newsy
Powered by NewsLook.com
'Holy Grail' Of Weight Loss? New Find Could Be It

'Holy Grail' Of Weight Loss? New Find Could Be It

Newsy (Apr. 18, 2014) In a potential breakthrough for future obesity treatments, scientists have used MRI scans to pinpoint brown fat in a living adult for the first time. Video provided by Newsy
Powered by NewsLook.com
Little Progress Made In Fighting Food Poisoning, CDC Says

Little Progress Made In Fighting Food Poisoning, CDC Says

Newsy (Apr. 18, 2014) A new report shows rates of two foodborne infections increased in the U.S. in recent years, while salmonella actually dropped 9 percent. Video provided by Newsy
Powered by NewsLook.com
Scientists Create Stem Cells From Adult Skin Cells

Scientists Create Stem Cells From Adult Skin Cells

Newsy (Apr. 17, 2014) The breakthrough could mean a cure for some serious diseases and even the possibility of human cloning, but it's all still a way off. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins