Featured Research

from universities, journals, and other organizations

Two proteins play key roles in Burkitt's lymphoma

Date:
March 7, 2011
Source:
Sbarro Health Research Organization
Summary:
A new study reveals new molecular insight into the understanding and treatment of Burkitt`s lymphoma, one of the most aggressive tumors affecting humans.

Burkitt's lymphoma is one of the most aggressive tumors affecting humans. Multiple alterations in genes that regulate cell proliferation rate explain its aggressive behavior.

Related Articles


A new study reveals new molecular insight into the understanding and treatment of Burkitt`s lymphoma. The new finding concentrates on a genetic locus -- a piece of DNA with one or more genes which is the specific location of a gene or DNA sequence on a chromosome -- called INK4a/ARF locus. This locus encodes two important tumor suppressor genes, p16 and p14, and is usually inactivated in human tumors by genetic mutations. By controlling p53 and Rb pathways, p14(ARF) and p16(INK4a) inactivation allow the cells to overcome anti-oncogenic barriers and proliferate in an uncontrolled manner. Researchers found that in Burkitt`s lymphoma, the locus is genetically unchanged but the product proteins are inactivated by epigenetic and posttranscriptional mechanisms.

The research was done by the Sbarro Health Research Organization Center for Biotechnology, a nonprofit research center for cancer, cardiovascular and diabetes research, located in the College of Science and Technology at Temple University in Philadelphia, PA, and the University of Siena in Siena, Italy and published in Cell Cycle.

"We discovered a completely new mechanism for INK4/ARF protein inactivation," said Annalisa Roberti, lead author of the paper. "Since in Burkitt`s lymphoma these two proteins are not inactivated at the genetic level, their inactivation could be pharmacologically reversible. The reactivation of p16 and p14 in our model and our ability to inhibit cell proliferation and induce apoptosis through the Rb- and p-53 pathways opens new prospects for the understanding and treatment of Burkitt's lymphoma."

"This is an additional piece of the complex puzzle in which the Rb family, which includes Rb2/p130, plays an important role. The new discovery in our laboratory presents additional evidence that more and more, Rb is becoming to be viewed as a guardian of our genome," notes Antonio Giordano, M.D., Ph.D., Founder of SHRO and Director of the Sbarro Institute for Cancer Research and Molecular Medicine.


Story Source:

The above story is based on materials provided by Sbarro Health Research Organization. Note: Materials may be edited for content and length.


Journal Reference:

  1. Annalisa Roberti, Flavio Rizzolio, Chiara Lucchetti, Laurence de Leval, Antonio Giordano. Ubiquitin-mediated protein degradation and methylation-induced gene silencing cooperate in the inactivation of the INK4/ARF locus in Burkitt`s lymphoma cell lines. Cell Cycle, 2011; 10 (1): 127 DOI: 10.4161/cc.10.1.14446

Cite This Page:

Sbarro Health Research Organization. "Two proteins play key roles in Burkitt's lymphoma." ScienceDaily. ScienceDaily, 7 March 2011. <www.sciencedaily.com/releases/2011/03/110307093027.htm>.
Sbarro Health Research Organization. (2011, March 7). Two proteins play key roles in Burkitt's lymphoma. ScienceDaily. Retrieved November 25, 2014 from www.sciencedaily.com/releases/2011/03/110307093027.htm
Sbarro Health Research Organization. "Two proteins play key roles in Burkitt's lymphoma." ScienceDaily. www.sciencedaily.com/releases/2011/03/110307093027.htm (accessed November 25, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Tuesday, November 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) — The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Madagascar Working to Contain Plague Outbreak

Madagascar Working to Contain Plague Outbreak

AFP (Nov. 24, 2014) — Madagascar said Monday it is trying to contain an outbreak of plague -- similar to the Black Death that swept Medieval Europe -- that has killed 40 people and is spreading to the capital Antananarivo. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Are Female Bosses More Likely To Be Depressed?

Are Female Bosses More Likely To Be Depressed?

Newsy (Nov. 24, 2014) — A new study links greater authority with increased depressive symptoms among women in the workplace. Video provided by Newsy
Powered by NewsLook.com
Winter Can Cause Depression — Here's How To Combat It

Winter Can Cause Depression — Here's How To Combat It

Newsy (Nov. 23, 2014) — Millions of American suffer from seasonal depression every year. It can lead to adverse health effects, but there are ways to ease symptoms. 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:

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