Featured Research

from universities, journals, and other organizations

Most common bladder cancer tumor sequenced

Date:
August 12, 2011
Source:
University of Colorado Denver
Summary:
Scientists have conducted the first ever genetic sequencing of most common bladder cancer. Recognizing the genetic mutations that make bladder cancer cells different than their healthy neighbors may allow early genetic screenings for cancer and new therapies targeting cells with these mutations. In addition, the mutations the team found are similar to those recently discovered in a host of other cancers, implying a possible common denominator in the cause of cancer in general.

In an article published online this week in Nature Genetics, a University of Colorado Cancer Center team in partnership with universities in China and Denmark reports the first genetic sequencing of urothelial (transitional) carcinoma, the most prevalent type of bladder cancer.

Recognizing the genetic mutations that make bladder cancer cells different than their healthy neighbors may allow early genetic screenings for cancer and new therapies targeting cells with these mutations. In addition, the mutations the team found are similar to those recently discovered in a host of other cancers, implying a possible common denominator in the cause of cancer in general. Specifically, in 59 percent of 97 patients with urothelial carcinoma, the team found mutations in genes responsible for chromatin remodeling -- the process of packaging DNA for easy duplication during cell division.

"The discovery of mutation in the UTX gene and seven similar chromatin remodeling genes is a major step toward genetic testing and treatment of bladder cancer," says Dan Theodorescu, MD, PhD, director the University of Colorado Cancer Center and an author on this work. On a grand scale, the study also provides the first-ever overview of the genetic basis of urothelial bladder cancer and implicates chromatin remodeling in its cause.

Chromatin describes the genetic contents of a cell's nucleus including the cell's DNA and the proteins that sculpt its arrangement inside the cell. During most of a cell's life, these proteins arrange DNA loosely so that its inner parts are accessible and available for use. In preparation for cell division, these proteins in the cell's chromatin constrict DNA into a tight package for efficient duplication. This squeezing is known as "chromatin remodeling." How the cell remodels and thus how it duplicates depends greatly on associated chromatin remodeling genes -- the genes this study found to be mutated in many bladder cancer patients.

"When we talk about 'causes' of cancer, there's a black box between a healthy cell and the emergence of cancerous ones," says Theodorescu. "By exploring the genetic changes that take place inside this box, we can look at the links of the chain of events that lead to cancer and hopefully target specific links for therapy."

In the development of bladder cancer, this study shows that chromatin remodeling is an important link.

"We are currently well underway in performing similar sequencing with Caucasian subjects to determine if the mutations in the Caucasian population are similar to those seen in this study's Asian subjects," Theodorescu says.

After confirmation, the task will be twofold: designing genetic tests for these mutations that may allow easy, early, accurate diagnosis of bladder cancer, and developing therapies that recognize these mutations and kill the cancerous cells that hold them.

This work was supported by grants from the National High Technology Research and Development Program of China (863 Program, 2006AA02A302 to H.Y. 2009AA022707 to X.Z.), the Promotion Program for Shenzhen Key Laboratory, Shenzhen, China (CXB200903090055A and CXB201005250016A to Z.C.), and Research Fund for the Doctoral Program of Higher Education of China (20100001110100).


Story Source:

The above story is based on materials provided by University of Colorado Denver. Note: Materials may be edited for content and length.


Journal Reference:

  1. Yaoting Gui, Guangwu Guo, Yi Huang, Xueda Hu, Aifa Tang, Shengjie Gao, Renhua Wu, Chao Chen, Xianxin Li, Liang Zhou, Minghui He, Zesong Li, Xiaojuan Sun, Wenlong Jia, Jinnong Chen, Shangming Yang, Fangjian Zhou, Xiaokun Zhao, Shengqing Wan, Rui Ye, Chaozhao Liang, Zhisheng Liu, Peide Huang, Chunxiao Liu, Hui Jiang, Yong Wang, Hancheng Zheng, Liang Sun, Xingwang Liu, Zhimao Jiang, Dafei Feng, Jing Chen, Song Wu, Jing Zou, Zhongfu Zhang, Ruilin Yang, Jun Zhao, Congjie Xu, Weihua Yin, Zhichen Guan, Jiongxian Ye, Hong Zhang, Jingxiang Li, Karsten Kristiansen, Michael L Nickerson, Dan Theodorescu, Yingrui Li, Xiuqing Zhang, Songgang Li, Jian Wang, Huanming Yang, Jun Wang, Zhiming Cai. Frequent mutations of chromatin remodeling genes in transitional cell carcinoma of the bladder. Nature Genetics, 2011; DOI: 10.1038/ng.907

Cite This Page:

University of Colorado Denver. "Most common bladder cancer tumor sequenced." ScienceDaily. ScienceDaily, 12 August 2011. <www.sciencedaily.com/releases/2011/08/110811151321.htm>.
University of Colorado Denver. (2011, August 12). Most common bladder cancer tumor sequenced. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2011/08/110811151321.htm
University of Colorado Denver. "Most common bladder cancer tumor sequenced." ScienceDaily. www.sciencedaily.com/releases/2011/08/110811151321.htm (accessed April 16, 2014).

Share This



More Health & Medicine News

Wednesday, April 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Outbreak Now Linked To 121 Deaths

Ebola Outbreak Now Linked To 121 Deaths

Newsy (Apr. 15, 2014) The ebola virus outbreak in West Africa is now linked to 121 deaths. Health officials fear the virus will continue to spread in urban areas. Video provided by Newsy
Powered by NewsLook.com
Cognitive Function: Is It All Downhill From Age 24?

Cognitive Function: Is It All Downhill From Age 24?

Newsy (Apr. 15, 2014) A new study out of Canada says cognitive motor performance begins deteriorating around age 24. Video provided by Newsy
Powered by NewsLook.com
How Mt. Everest Helped Scientists Research Diabetes

How Mt. Everest Helped Scientists Research Diabetes

Newsy (Apr. 15, 2014) British researchers were able to use Mount Everest's low altitudes to study insulin resistance. They hope to find ways to treat diabetes. Video provided by Newsy
Powered by NewsLook.com
Carpenter's Injury Leads To Hundreds Of 3-D-Printed Hands

Carpenter's Injury Leads To Hundreds Of 3-D-Printed Hands

Newsy (Apr. 14, 2014) Richard van As lost all fingers on his right hand in a woodworking accident. Now, he's used the incident to create a prosthetic to help hundreds. 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