Navigation Links
PBX1 identified as a new pioneer factor underlying progression in breast cancer
Date:11/17/2011

The presence of a new pioneer factor, known as PBX1, can guide the response to estrogen in breast cancer cells according to researchers at Dartmouth-Hitchcock Norris Cotton Cancer Center in results published on November 17 in the open-access journal PLoS Genetics. This research reveals that PBX1 alone can determine the risk of the spread of cancer in patients with estrogen receptor alpha (ERα)-positive breast cancer, which accounts for about two-thirds of all breast cancers diagnosed in North America.

Pioneer factors are an emerging class of chromatin remodelers with the capacity to modulate cellular identity as they set the stage by defining the genomic regions accessible for transcription factors. "Since cancer is characterized by a loss of cell-fate identity, it is not surprising that other pioneer factors have already been characterized as oncogenic factors in breast cancer, but PBX1 is one that discriminates progression," said Dr. Mathieu Lupien, assistant professor of genetics, Norris Cotton Cancer Center, Dartmouth Medical School, who served as principal investigator for the study. Specifically, this research demonstrates that PBX1 directly modulates chromatin compaction at discrete genomic regions to promote the recruitment of the transcription factor ERα, driving the proliferative response to estrogen in breast cancer cells.

"Unfortunately, numerous ERα-positive patients with breast cancer progress to more advanced stages of the disease as they develop resistance to endocrine therapies, which directly target ERα." said lead author Dr. Luca Magnani, post-doctoral scientist.

"This work may rapidly translate to the clinic because PBX1 could likely serve as a prognostic marker for ERα-positive breast cancer progression. It also highlights the potential therapeutic benefit of developing means to antagonize pioneer factors such as PBX1 to prevent breast cancer progression" said Dr. Lupien.


'/>"/>

Contact: Dr. Mathieu Lupien
Mathieu.Lupien@Dartmouth.edu
603-653-9041
Public Library of Science
Source:Eurekalert

Related medicine news :

1. Tumor mechanism identified
2. Damaged protein identified as early diagnostic biomarker for Alzheimers disease in healthy adults
3. Meat Might Be Behind Many Unidentified Allergic Reactions
4. Predisposing factors for conversion of mild cognitive impairment to AD identified
5. Salmonella Tennessee Identified in a Processed Food Ingredient
6. Gene Mutations Identified for Charcot-Marie-Tooth Syndrome
7. Newly identified proteins critical to FA pathway DNA repair function
8. New Alzheimers Gene Identified
9. Strange Artifact Identified as Ancient Anti-Snoring Device
10. New Alzheimers Risk Genes Identified
11. Mechanism that may trigger degenerative disease identified
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/22/2017)... ... September 22, 2017 , ... First Choice ... celebrating the one year anniversary of its Houston-Fallbrook facility. , “We are ... Facility Medical Director of First Choice Emergency Room Houston-Fallbrook. “It has been a ...
(Date:9/22/2017)... ... ... “Letters From Home”: a moving compilation of letters that remind readers of the ... is the creation of published author, John Allred, a passionate leader of ministry to ... who has traveled and ministered on four continents. , “It is my hope and ...
(Date:9/21/2017)... , ... September 21, 2017 , ... With ProSlideshow Portrait ... and easy to do. Users can select from up to two layers of subject ... click of a mouse all within Final Cut Pro X. , With ...
(Date:9/21/2017)... , ... September 21, 2017 , ... ... learn with Infinity Behavioral Health Services for professionals in the addiction treatment industry ... Payer Audit . , Insurance companies and state and federal governments are ...
(Date:9/21/2017)... ... September 21, 2017 , ... Bill Howe Plumbing’s mission is to create an ... to the community. For over 37 years, they have operated with their mission at ... in San Diego. They were chosen as the Best San Diego plumber in ...
Breaking Medicine News(10 mins):
(Date:9/6/2017)... -- Eli Lilly and Company (NYSE: LLY ... galcanezumab and lasmiditan, two investigational treatments for migraine, at ... taking place Sept. 7-10 in Vancouver ... data from an open-label study evaluating the safety and ... 240 mg) for the prevention of migraine. Galcanezumab is ...
(Date:9/5/2017)... Oramed Pharmaceuticals Inc. (NASDAQ: ORMP ) (TASE: ... on the development of oral drug delivery systems, announced ... the U.S. Food and Drug Administration (FDA) regarding ORMD-0801, ... At the meeting, the FDA gave ... ORMD-0801, would be a Biologics License Application (BLA).  Such ...
(Date:8/29/2017)... , Aug. 29, 2017 ivWatch, LLC, the leading provider ... infiltrations, announced it has been awarded an Innovative Technology contract from ... the country. ... device to aid in the early detection of peripheral IV infiltration ... The Innovative Technology contract ...
Breaking Medicine Technology: