Featured Research

from universities, journals, and other organizations

Pancreatic Cancer: Researchers Find Drug That Reverses Resistance To Chemotherapy

Date:
September 25, 2009
Source:
ECCO-the European CanCer Organisation
Summary:
For the first time researchers have shown that by inhibiting the action of an enzyme called TAK-1, it is possible to make pancreatic cancer cells sensitive to chemotherapy, opening the way for the development of a new drug to treat the disease.

For the first time researchers have shown that by inhibiting the action of an enzyme called TAK-1, it is possible to make pancreatic cancer cells sensitive to chemotherapy, opening the way for the development of a new drug to treat the disease.

Related Articles


Dr Davide Melisi told Europe's largest cancer congress, ECCO 15 – ESMO 34, in Berlin Sept. 24 that resistance to chemotherapy was the greatest challenge to treating pancreatic cancer.

"Pancreatic cancer is an incurable malignancy, resistant to every anti-cancer treatment. Targeting TAK-1 could be a strategy to revert this resistance, increasing the efficacy of chemotherapy," said Dr Melisi, who until the start of September was a Fellow at the M.D. Anderson Center in Houston (Texas, USA); he has now moved to a staff position at the National Cancer Institute in Naples (Italy). "During the past few years we have been studying the role played by a cytokine or regulatory protein called Transforming Growth Factor beta (TGFbeta) in the development of pancreatic cancer. Recently we focused our attention on a unique enzyme activated by TGFbeta, TAK-1, as a mediator for this extreme drug resistance."

Dr Melisi and his colleagues investigated the expression of TAK-1 (TGFbeta-Activated Kinase-1) in pancreatic cell lines and developed a drug that was capable of inhibiting TAK-1. They tested the activity of the TAK-1 inhibitor on its own and in combination with the anti-cancer drugs gemcitabine, oxaliplatin and SN-38 (a metabolite of the anti-cancer drug irinotecan) in cell lines, and the activity of the TAK-1 inhibitor combined with gemcitabine against pancreatic cancer in mice.

"The use of this TAK-1 inhibitor increased the sensitivity of pancreatic cells to all three chemotherapeutic drugs. By combining it with classic anti-cancer drugs, we were able to use doses of drugs up to 70 times lower in comparison with the control to kill the same number of cancer cells. In mice, we were able to reduce significantly the tumour volume, to prolong the mice survival, and to reduce the toxicity by combining the TAK-1 inhibitor with very low doses of a classic chemotherapeutic drug, gemcitabine, that would have been ineffective otherwise," said Dr Melisi.

The use of gemcitabine on its own against the cancer in mice was ineffective because of the drug resistant nature of the disease. However, once it was combined with the TAK-1 inhibitor, Dr Melisi and his colleagues saw a 78% reduction in tumour volumes. "The median average survival for the control, TAK-1 inhibitor, gemcitabine on its own, or TAK-1 inhibitor combined with gemcitabine was 68, 87, 82 and 122 days respectively," he said.

"This is the first time that TAK-1 has been indicated as a relevant target for the treatment of a solid tumour and that it is a valid approach to reverting the intrinsic drug resistance of pancreatic cancer. The TAK-1 inhibitor used in this study is an exciting drug that warrants further development for the treatment of pancreatic cancer. In the near future, we will study whether it is also able to make other chemotherapeutic agents, such as oxaliplatin, 5-FU or irinotecan, work against pancreatic cancer in mice.

"Our main goal is to translate this combination approach from the bench to the bedside, conducting a clinical trial that could demonstrate the safety of this TAK-1 inhibitor in combination with gemcitabine, and its efficacy, in pancreatic cancer patients."


Story Source:

The above story is based on materials provided by ECCO-the European CanCer Organisation. Note: Materials may be edited for content and length.


Cite This Page:

ECCO-the European CanCer Organisation. "Pancreatic Cancer: Researchers Find Drug That Reverses Resistance To Chemotherapy." ScienceDaily. ScienceDaily, 25 September 2009. <www.sciencedaily.com/releases/2009/09/090924093351.htm>.
ECCO-the European CanCer Organisation. (2009, September 25). Pancreatic Cancer: Researchers Find Drug That Reverses Resistance To Chemotherapy. ScienceDaily. Retrieved March 31, 2015 from www.sciencedaily.com/releases/2009/09/090924093351.htm
ECCO-the European CanCer Organisation. "Pancreatic Cancer: Researchers Find Drug That Reverses Resistance To Chemotherapy." ScienceDaily. www.sciencedaily.com/releases/2009/09/090924093351.htm (accessed March 31, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Tuesday, March 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

7-Year-Old Girl Gets 3-D Printed 'robohand'

7-Year-Old Girl Gets 3-D Printed 'robohand'

AP (Mar. 31, 2015) — Although she never had much interest in prosthetic limbs before, Faith Lennox couldn&apos;t wait to slip on her new robohand. The 7-year-old, who lost part of her left arm when she was a baby, grabbed it as soon as it came off a 3-D printer. (March 31) Video provided by AP
Powered by NewsLook.com
Solitair Device Aims to Takes Guesswork out of Sun Safety

Solitair Device Aims to Takes Guesswork out of Sun Safety

Reuters - Innovations Video Online (Mar. 31, 2015) — The Solitair device aims to take the confusion out of how much sunlight we should expose our skin to. Small enough to be worn as a tie or hair clip, it monitors the user&apos;s sun exposure by taking into account their skin pigment, location and schedule. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Soda, Salt and Sugar: The Next Generation of Taxes

Soda, Salt and Sugar: The Next Generation of Taxes

Washington Post (Mar. 30, 2015) — Denisa Livingston, a health advocate for the Dinι Community Advocacy Alliance, and the Post&apos;s Abby Phillip discuss efforts around the country to make unhealthy food choices hurt your wallet as much as your waistline. Video provided by Washington Post
Powered by NewsLook.com
UnitedHealth Buys Catamaran

UnitedHealth Buys Catamaran

Reuters - Business Video Online (Mar. 30, 2015) — The $12.8 billion merger will combine the U.S.&apos; third and fourth largest pharmacy benefit managers. Analysts say smaller PBMs could also merge. Fred Katayama reports. Video provided by Reuters
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