Navigation Links
Researchers identify how to switch off cancer cell genes
Date:11/12/2007

Los Angeles, Nov. 12, 2007-- A new study led by researchers at the University of Southern California (USC) identifies how genes are silenced in cancer cells through distinct changes in the density of nucleosomes within the cells.

The findings, published in the Nov. 13 issue of the journal Cancer Cell, will enable researchers to explore new therapies to switch the genes back on and may lead to novel treatments for human cancers, says study lead author Peter A. Jones, Ph.D., D.Sc., director of the USC/Norris Comprehensive Cancer Center and Distinguished Professor at the Keck School of Medicine of USC.

"The study shows for the first time exactly how genes get shut down in cancer cells," Jones says. "It identifies what the target looks like so that new therapies can be designed to turn them back on."

The study showed that silencing of transcription start sites in some cancer cells involves distinct changes in nucleosomal occupancy'or the density of nucleosomes'in the cell. Researchers found that three nucleosomes, almost completely absent from the start site in normal cells, are present in the methylated and silenced promoter, suggesting that epigenetic silencing may be accomplished by the stable placement of nucleosomes into previously vacant positions.

DNA cytosine methylation'the addition of a group of specific chemicals to a stretch of DNA that can lock or silence a gene'may ultimately lead to silencing by enabling the stable presence of nucleosomes at the start sites of cancer-related genes, the study suggests.

"We believe these findings will contribute to the development of cancer therapies," Jones says. "We were surprised to find how rigid the inactive structure is, and how rapidly it can be dissolved by drug treatment."


'/>"/>

Contact: Meghan Lewit
lewit@usc.edu
323-442-2830
University of Southern California
Source:Eurekalert

Page: 1

Related biology news :

1. Researchers identify proteins involved in new neurodegenerative syndrome
2. Texas researchers and educators head for Antarctica
3. MGH researchers describe new way to identify, evolve novel enzymes
4. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
5. U of MN researchers discover noninvasive diagnostic tool for brain diseases
6. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
7. Researchers discover new strategies for antibiotic resistance
8. Researchers find new taste in fruit flies: carbonated water
9. Binghamton University researchers investigate evolving malaria resistance
10. UIC researchers find promising new targets for antibiotics
11. Researchers develop simple method to create natural drug products
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/10/2016)... , March 10, 2016 ... market research report "Identity and Access Management Market by ... Compliance, and Governance), by Organization Size, by Deployment, by ... published by MarketsandMarkets, The market is estimated to grow ... Billion by 2020, at a Compound Annual Growth Rate ...
(Date:3/8/2016)... RALEIGH, N.C. , March 8, 2016 /PRNewswire/ ... biometric sensor technology, today announced it has secured ... led by GII Tech, a new venture fund ... LLC, with additional participation from existing investors TDF ... use the funds to continue its triple-digit growth ...
(Date:3/2/2016)... DUBLIN , March 2, 2016 /PRNewswire/ ... the addition of the "Global Biometrics ... to their offering. --> ... the "Global Biometrics as a Service ... --> Research and Markets ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... CA (PRWEB) , ... April 29, 2016 , ... Summit ... (NSCF) to support the development of a patient-specific stem cell therapy for the treatment ... the lab of Dr. Jeanne Loring at The Scripps Research Institute in San Diego, ...
(Date:4/29/2016)... 29, 2016 Elekta is pleased ... to its industry-leading treatment planning software, is available for ... Monaco version 5.11 provides significant performance speed ... speeds up to four times faster than in previous ... industry,s gold standard Monte Carlo ...
(Date:4/28/2016)... Q BioMed Inc. (OTCQB:QBIO), ...  was featured in an article he wrote on ... To Tread: http://www.lifescienceleader.com/doc/accelerators-enter-when-vcs-fear-to-tread-0001 ... an essential business journal for life science executives ... Big Pharmas. Their content is designed to inform ...
(Date:4/28/2016)... ... 28, 2016 , ... Next week on May 5 at ... technologies for tissue stem cell counting and expansion to gene-editing scientists and other ... CRISPR-based Genome Engineering in Burlington, Massachusetts. , The attention of most gene-editing scientists ...
Breaking Biology Technology: