Featured Research

from universities, journals, and other organizations

Researchers link protein with breast cancer's spread to brain

Date:
January 6, 2014
Source:
University of Wisconsin-Madison
Summary:
A cancer-research team has identified a protein that may be a major culprit when breast cancer metastasizes to the brain.

A cancer-research team at the University of Wisconsin-Madison has identified a protein that may be a major culprit when breast cancer metastasizes to the brain.

Related Articles


Brain metastasis is a terrifying complication of advanced breast cancer, with a grim prognosis and few treatment options. The cancer's spread to the brain is often undetected until patients start to develop symptoms such as seizures, headaches, and trouble thinking. Scientists hope a better understanding of the molecular events that regulate brain metastasis will lead to earlier diagnosis and improved therapies.

Using cell models, the researchers found that breast cancer cells harness a protein called alphaB-crystallin to help them stick to endothelial cells that line the small blood vessels in the brain. In addition, this protein enhances the penetration of breast cancer cells through the blood-brain barrier, which normally prevents cells and many molecules from entering the brain. Once in the brain, the breast cancer cells are able to form metastases.

The study, published in Clinical Cancer Research, and featured on the journal cover, was led by Dr. Vincent Cryns, professor of medicine at the University of Wisconsin School of Medicine and Public Health and a member of the University of Wisconsin Carbone Cancer Center.

Cryns and his colleagues also developed new mouse models of breast-cancer brain metastasis that mimic many features of the human disease. They found that reducing the expression of alphaB-crystallin in breast cancer cells hindered the cells' ability to form brain metastases in mice.

"These observations in our mouse models suggest that alphaB-crystallin may be a promising drug target that should be explored further," said Cryns. "Although there are no drug inhibitors of this protein currently, we are actively pursuing studies to identify drugs that might reduce the expression of the protein or block its effects," he added.

In addition, by examining tissue from breast-cancer patients who developed brain metastasis, the investigators discovered that women with breast tumors that expressed alphaB-crystallin had a shorter survival than women with breast tumors that did not express this protein. These studies were conducted in collaboration with researchers at the University of North Carolina at Chapel Hill, Duke University and other institutions.

Furthermore, the team found breast tumors that expressed alphaB-crystallin were more likely to be triple-negative breast cancers -- an aggressive type of cancer, which lacks three receptors (estrogen receptor, progesterone receptor and HER-2) expressed in other types of breast cancer. Triple-negative breast cancers are known to have a high incidence of brain metastasis.

"Our findings suggest that alphaB-crystallin may contribute to the tendency of triple-negative breast cancers to metastasize to the brain and to their poor prognosis," said Cryns. Yet, he cautioned these findings need to be validated in additional studies.


Story Source:

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


Journal Reference:

  1. D. Malin, E. Strekalova, V. Petrovic, A. M. Deal, A. Al Ahmad, B. Adamo, C. R. Miller, A. Ugolkov, C. Livasy, K. Fritchie, E. Hamilton, K. Blackwell, J. Geradts, M. Ewend, L. Carey, E. V. Shusta, C. K. Anders, V. L. Cryns. B-Crystallin: A Novel Regulator of Breast Cancer Metastasis to the Brain. Clinical Cancer Research, 2013; DOI: 10.1158/1078-0432.CCR-13-1255

Cite This Page:

University of Wisconsin-Madison. "Researchers link protein with breast cancer's spread to brain." ScienceDaily. ScienceDaily, 6 January 2014. <www.sciencedaily.com/releases/2014/01/140106133301.htm>.
University of Wisconsin-Madison. (2014, January 6). Researchers link protein with breast cancer's spread to brain. ScienceDaily. Retrieved April 1, 2015 from www.sciencedaily.com/releases/2014/01/140106133301.htm
University of Wisconsin-Madison. "Researchers link protein with breast cancer's spread to brain." ScienceDaily. www.sciencedaily.com/releases/2014/01/140106133301.htm (accessed April 1, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, April 1, 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