Featured Research

from universities, journals, and other organizations

Gene Therapy Study Takes Aim At Prostate Cancer

Date:
September 26, 2006
Source:
Baylor College of Medicine
Summary:
Researchers at Baylor College of Medicine (BCM) are hoping a new gene therapy that takes a gene called RTVP-1 directly into the prostate tumor will prove effective in preventing recurrence of the disease.

Researchers at Baylor College of Medicine (BCM) are hoping a new gene therapy that takes a gene called RTVP-1 directly into the prostate tumor will prove effective in preventing recurrence of the disease.

Related Articles


The first phase of the study is designed to test the safety of the treatment and determine the proper dosage of gene, said Dr. Dov Kadmon, professor of urology at BCM. It will be carried out in the department of urology at BCM as well as at Ben Taub General Hospital, The Methodist Hospital and Michael E. DeBakey Veterans Affairs Medical Center.

"We are treating patients who are scheduled for a prostatectomy (prostate removal) but who also have a high risk that their disease will recur (or come back)," said Kadmon. "The operation itself is highly successful in eradicating local tumors (in the prostate)."

The design of the study is simple, said Kadmon.

"One injection into the prostate that should take no more than 10 minutes, although patients will be monitored in a special unit of the hospital for 23 hours to make sure there are no side effects. After that, they come to the unit for a check-up once a week."

After about 30 days, the subjects undergo their surgery, which has already been scheduled, he said. He said the hope is that the gene therapy will reduce the risk that cancer will recur at or near the site of the tumor as well as in distant points in the body.

"We hope that by generating a systemic immune response, we are enabling the body to destroy prostate cancer cells that have moved elsewhere," he said. Kadmon and his colleagues plan to test six different doses of the gene.

The gene therapy involves attaching an inactivated adenovirus (related to viruses that cause respiratory infections) to the RTVP-1 gene. As the virus infects the tumor cells, it will introduce the gene into the cells as well. (RTVP stands for related to testes-specific, vespid and pathogenesis proteins.) The RTVP-1 gene was isolated in the laboratory of Dr. Timothy Thompson, also a professor of urology at BCM.

As Thompson began to study the gene, he found that it was a target for a tumor suppressor gene called p53, which is a major controller of cell activity in prostate and other cancers. He found that the human form of the gene is normally present in benign prostate or low grade tumor but is lost as the tumors become more malignant. "This characterized it as a tumor suppressor gene that is active in the prostate," said Kadmon.

When the gene is introduced into the tumors of animals lacking RTVP-1, it suppresses the formation of new blood vessels. It causes what is known as "apoptosis" or programmed cell death in prostate cancer cells and also activates the immune system to fight cancer cells.

"We are proceeding carefully, step-by-step," said Kadmon. He said they do not think the study presents a significant risk.

They will inject the virus-gene compound directly into the prostate. While there is a risk of infection with the injection, he said patients will receive antibiotics. Most patients will have some fever after the injection, but it can probably be handled with Tylenol.

Doctors will monitor patients after their surgery to determine the effect of the gene therapy on their disease.

Funding for the study, which will include as many as 36 subjects, comes from the National Cancer Institute and the Baylor Special Program for Research Excellence in Prostate Cancer that is NCI-funded.

Others involved in the study include Thompson, Dr. Brian J. Miles, BCM professor of urology; Dr. Adrian Gee, BCM professor of medicine and pediatrics in the section of hematology oncology; Dr. Thomas M. Wheeler, BCM professor of pathology and urology; Dr. Gustavo E. Ayala, BCM professor of pathology and urology; Dr. Martha P. Mims, BCM assistant professor of medicine in the section of hematology-oncology; and Dr. Teresa G. Hayes, BCM assistant professor of medicine, section of hematology-oncology.

Patients qualified to participate in this study are individuals diagnosed with high grade prostate cancer (Gleason grade 7 or higher), or who have a blood PSA level of 10ng/ml or higher and are contemplating surgery (radical prostatectomy). To register for the study or to obtain further information, patients may call 713-798-4895.


Story Source:

The above story is based on materials provided by Baylor College of Medicine. Note: Materials may be edited for content and length.


Cite This Page:

Baylor College of Medicine. "Gene Therapy Study Takes Aim At Prostate Cancer." ScienceDaily. ScienceDaily, 26 September 2006. <www.sciencedaily.com/releases/2006/09/060925162606.htm>.
Baylor College of Medicine. (2006, September 26). Gene Therapy Study Takes Aim At Prostate Cancer. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2006/09/060925162606.htm
Baylor College of Medicine. "Gene Therapy Study Takes Aim At Prostate Cancer." ScienceDaily. www.sciencedaily.com/releases/2006/09/060925162606.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
The Best Protein-Filled Foods to Energize You for the New Year

The Best Protein-Filled Foods to Energize You for the New Year

Buzz60 (Dec. 19, 2014) The new year is coming and nothing will energize you more for 2015 than protein-filled foods. Fitness and nutrition expert John Basedow (@JohnBasedow) gives his favorite high protein foods that will help you build muscle, lose fat and have endless energy. Video provided by Buzz60
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