Featured Research

from universities, journals, and other organizations

Gene mutation found for aggressive form of pancreatic cancer

Date:
May 25, 2014
Source:
University of California, San Diego Health Sciences
Summary:
A mutated gene common to adenosquamous carcinoma (ASC) tumors has been discovered by researchers -– the first known unique molecular signature for this rare, but particularly virulent, form of pancreatic cancer. Pancreatic cancer is the fourth leading cause of cancer-related death in the United States, with roughly 45,220 new cases diagnosed and more than 38,400 deaths annually. Both numbers are rising. ASC cases are infrequent, but typically have a worse prognosis than more common types of pancreatic cancer.

Researchers at the University of California, San Diego School of Medicine have identified a mutated gene common to adenosquamous carcinoma (ASC) tumors -- the first known unique molecular signature for this rare, but particularly virulent, form of pancreatic cancer.

The findings are published in the May 25 advance online issue of Nature Medicine.

Pancreatic cancer is the fourth leading cause of cancer-related death in the United States, with roughly 45,220 new cases diagnosed and more than 38,400 deaths annually. Both numbers are rising. ASC cases are infrequent, but typically have a worse prognosis than more common types of pancreatic cancer.

"There has been little progress in understanding pancreatic ASC since these aggressive tumors were first described more than a century ago," said co-senior author Miles F. Wilkinson, PhD, professor in the Department of Reproductive Medicine and a member of the UC San Diego Institute for Genomic Medicine. "One problem has been identifying mutations unique to this class of tumors."

In their paper, Wilkinson, co-senior author Yanjun Lu, PhD, of Tongji University in China, and colleagues report that ASC pancreatic tumors have somatic or non-heritable mutations in the UPF1 gene, which is involved in a highly conserved RNA degradation pathway called nonsense-mediated RNA decay or NMD. It is the first known example of genetic alterations in an NMD gene in human tumors.

NMD has two major roles. First, it is a quality control mechanism used by cells to eliminate faulty messenger RNA (mRNA) -- molecules that help transcribe genetic information into the construction of proteins essential to life. Second, it degrades a specific group of normal mRNAs, including those encoding proteins promoting cell growth, cell migration and cell survival. Loss of NMD in these tumors may "release the brakes on these molecules, and thereby driving tumor growth and spread," said Wilkinson.


Story Source:

The above story is based on materials provided by University of California, San Diego Health Sciences. The original article was written by Scott LaFee. Note: Materials may be edited for content and length.


Journal Reference:

  1. Chen Liu, Rachid Karam, YingQi Zhou, Fang Su, Yuan Ji, Gang Li, GuoTong Xu, LiXia Lu, ChongRen Wang, MeiYi Song, JingPing Zhu, YiRan Wang, YiFan Zhao, Wai Chin Foo, MingXin Zuo, Mark A Valasek, Milind Javle, Miles F Wilkinson, YanJun Lu. The UPF1 RNA surveillance gene is commonly mutated in pancreatic adenosquamous carcinoma. Nature Medicine, 2014; DOI: 10.1038/nm.3548

Cite This Page:

University of California, San Diego Health Sciences. "Gene mutation found for aggressive form of pancreatic cancer." ScienceDaily. ScienceDaily, 25 May 2014. <www.sciencedaily.com/releases/2014/05/140525154720.htm>.
University of California, San Diego Health Sciences. (2014, May 25). Gene mutation found for aggressive form of pancreatic cancer. ScienceDaily. Retrieved August 23, 2014 from www.sciencedaily.com/releases/2014/05/140525154720.htm
University of California, San Diego Health Sciences. "Gene mutation found for aggressive form of pancreatic cancer." ScienceDaily. www.sciencedaily.com/releases/2014/05/140525154720.htm (accessed August 23, 2014).

Share This




More Health & Medicine News

Saturday, August 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Newsy (Aug. 21, 2014) An experimental drug used to treat Marburg virus in rhesus monkeys could give new insight into a similar treatment for Ebola. Video provided by Newsy
Powered by NewsLook.com
Two US Ebola Patients Leave Hospital Free of the Disease

Two US Ebola Patients Leave Hospital Free of the Disease

AFP (Aug. 21, 2014) Two American missionaries who were sickened with Ebola while working in Liberia and were treated with an experimental drug are doing better and have left the hospital, doctors say on August 21, 2014. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
Cadavers, a Teen, and a Medical School Dream

Cadavers, a Teen, and a Medical School Dream

AP (Aug. 21, 2014) Contains graphic content. He's only 17. But Johntrell Bowles has wanted to be a doctor from a young age, despite the odds against him. He was recently the youngest participant in a cadaver program at the Indiana University NW medical school. (Aug. 21) Video provided by AP
Powered by NewsLook.com
American Ebola Patients Released: What Cured Them?

American Ebola Patients Released: What Cured Them?

Newsy (Aug. 21, 2014) It's unclear whether the American Ebola patients' recoveries can be attributed to an experimental drug or early detection and good medical care. 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