Featured Research

from universities, journals, and other organizations

New research model of human prostate cancer shows cancer development

Date:
July 6, 2010
Source:
The Endocrine Society
Summary:
Progress toward understanding the role of sex hormones in the growth of prostate cancer -- the most common cancer in US men -- has been hindered by the lack of a suitable laboratory research model. Now researchers say they have developed the first model of hormone-induced human prostate cancer initiation and progression.

Progress toward understanding the role of sex hormones in the growth of prostate cancer -- the most common cancer in U.S. men -- has been hindered by the lack of a suitable laboratory research model. Now researchers say they have developed the first model of hormone-induced human prostate cancer initiation and progression.

Their results were presented at The Endocrine Society's 92nd Annual Meeting in San Diego.

"We hope this model will speed up the process of testing preventive therapies for prostate cancer as well as help clarify the hormonal mechanisms in the development of this cancer," said Gail Prins, PhD, a professor and reproductive physiologist at the University of Illinois at Chicago, who is a co-author of the study.

"Sex hormones -- testosterone and estrogens -- are involved in regulating the growth of prostate cancer, but the mechanisms are not well established," Prins said.

Currently the only available laboratory models of human prostate cancer are xenografts -- cancerous human tissues grafted under the skin of animals -- or "transformed" cancer cell lines containing cells that originally came from patients with prostate cancer. However, Prins said, "If you want to study the initial development of cancer -- either naturally or induced -- or its prevention, you cannot use a model of existing cancer, such as transformed cell lines."

To study the progression of prostate cancer from normal cells into cancerous cells requires the use of animal prostate cells. Animal models, however, do not directly mimic all aspects of human prostate cancer, experts say.

Prins and her colleagues created their model using prostate cells obtained from a deceased organ donor who did not have prostate disease. They isolated and grew, in 3-D culture, adult prostate progenitor cells -- cells with stem cell-like properties that self-renew and may become cancerous. In 3-D culture, the progenitor cells proliferate and form small spheroids, called prostaspheres, which are capable of regenerating tissues.

The researchers combined these human prostaspheres with embryonic cells from the prostate of a rat and then transplanted the mixed cells under the kidney capsule of mice. These transplants regenerated into normal human prostate-like tissues and secreted prostate-specific antigen (PSA), which confirmed human functionality, according to Prins.

The mice then received a drug pellet containing testosterone and estradiol estrogen. A cancerous tumor formed at the transplant site.

"We were able to induce hormonally driven prostate cancer in these recombinant tissues," Prins said. "Using this model, we can follow the entire pathway of the cancer -- from normal tissue to initiation and progression."


Story Source:

The above story is based on materials provided by The Endocrine Society. Note: Materials may be edited for content and length.


Cite This Page:

The Endocrine Society. "New research model of human prostate cancer shows cancer development." ScienceDaily. ScienceDaily, 6 July 2010. <www.sciencedaily.com/releases/2010/07/100701072700.htm>.
The Endocrine Society. (2010, July 6). New research model of human prostate cancer shows cancer development. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2010/07/100701072700.htm
The Endocrine Society. "New research model of human prostate cancer shows cancer development." ScienceDaily. www.sciencedaily.com/releases/2010/07/100701072700.htm (accessed September 30, 2014).

Share This



More Health & Medicine News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How 'Yes Means Yes' Defines Sexual Assault

How 'Yes Means Yes' Defines Sexual Assault

Newsy (Sep. 29, 2014) Aimed at reducing sexual assaults on college campuses, California has adopted a new law changing the standard of consent for sexual activity. Video provided by Newsy
Powered by NewsLook.com
Scientists May Have Found An Early Sign Of Pancreatic Cancer

Scientists May Have Found An Early Sign Of Pancreatic Cancer

Newsy (Sep. 29, 2014) Researchers looked at 1,500 blood samples and determined people who developed pancreatic cancer had more branched chain amino acids. Video provided by Newsy
Powered by NewsLook.com
Colo. Doctors See Cluster of Enterovirus Cases

Colo. Doctors See Cluster of Enterovirus Cases

AP (Sep. 29, 2014) Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
Powered by NewsLook.com
Dr.'s Unsure of Cause of Fast-Spreading Virus

Dr.'s Unsure of Cause of Fast-Spreading Virus

AP (Sep. 29, 2014) Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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