Featured Research

from universities, journals, and other organizations

Researchers demonstrate why DNA breaks down in cancer cells

Date:
May 4, 2011
Source:
The Hebrew University of Jerusalem
Summary:
Damage to normal DNA is a hallmark of cancer cells. Although it had previously been known that damage to normal cells is caused by stress to their DNA replication when cancerous cells invade, the molecular basis for this remained unclear.

Damage to normal DNA is a hallmark of cancer cells. Although it had previously been known that damage to normal cells is caused by stress to their DNA replication when cancerous cells invade, the molecular basis for this remained unclear.

Now, for the first time, researchers at the Hebrew University of Jerusalem have shown that in early cancer development, cells suffer from insufficient building blocks to support normal DNA replication. It is possible to halt this by externally supplying the "building blocks," resulting in reduced DNA damage and significant lower potential of the cells to develop cancerous features. Thus, hopefully, this could one day provide protection against cancer development.

In laboratory work carried out at the Hebrew University, Prof. Batsheva Kerem of the Alexander Silberman Institute of Life Sciences and her Ph.D. student Assaf C. Bester demonstrated that abnormal activation of cellular proliferation driving many different cancer types leads to insufficient levels of the DNA building blocks (nucleotides) required to support normal DNA replication.

Then, using laboratory cultures in which cancerous cells were introduced, the researchers were able to show that through external supply of those DNA building blocks it is possible to reactivate normal DNA synthesis, thus negating the damage caused by the cancerous cells and the cancerous potential. This is the first time that this has been demonstrated anywhere.

This work, documented in a new article in the journal Cell, raises the possibility, say the Hebrew University researchers, for developing new approaches for protection against precancerous development, even possibly creating a kind of treatment to decrease DNA breakage.


Story Source:

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


Journal Reference:

  1. AssafC. Bester, Maayan Roniger, YifatS. Oren, MichaelM. Im, Dan Sarni, Malka Chaoat, Aaron Bensimon, Gideon Zamir, DonnaS. Shewach, Batsheva Kerem. Nucleotide Deficiency Promotes Genomic Instability in Early Stages of Cancer Development. Cell, 2011; 145 (3): 435 DOI: 10.1016/j.cell.2011.03.044

Cite This Page:

The Hebrew University of Jerusalem. "Researchers demonstrate why DNA breaks down in cancer cells." ScienceDaily. ScienceDaily, 4 May 2011. <www.sciencedaily.com/releases/2011/05/110503133001.htm>.
The Hebrew University of Jerusalem. (2011, May 4). Researchers demonstrate why DNA breaks down in cancer cells. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2011/05/110503133001.htm
The Hebrew University of Jerusalem. "Researchers demonstrate why DNA breaks down in cancer cells." ScienceDaily. www.sciencedaily.com/releases/2011/05/110503133001.htm (accessed October 21, 2014).

Share This



More Health & Medicine News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How Nigeria Beat Its Ebola Outbreak

How Nigeria Beat Its Ebola Outbreak

Newsy (Oct. 20, 2014) The World Health Organization has declared Nigeria free of Ebola. Health experts credit a bit of luck and the government's initial response. Video provided by Newsy
Powered by NewsLook.com
Another Study Suggests Viagra Is Good For The Heart

Another Study Suggests Viagra Is Good For The Heart

Newsy (Oct. 20, 2014) An ingredient in erectile-dysfunction medications such as Viagra could improve heart function. Perhaps not surprising, given Viagra's history. Video provided by Newsy
Powered by NewsLook.com
Ebola Worries End for Dozens on U.S. Watch Lists

Ebola Worries End for Dozens on U.S. Watch Lists

Reuters - US Online Video (Oct. 20, 2014) Forty-three people who had contact with Thomas Eric Duncan, the first person diagnosed with Ebola in the U.S., were cleared overnight of twice-daily monitoring after 21 days of showing no symptoms. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
CDC Calls for New Ebola Safety Guidelines

CDC Calls for New Ebola Safety Guidelines

AP (Oct. 20, 2014) Centers for Disease Control and Prevention Director Dr. Tom Frieden laid out new guidelines for health care workers when dealing with the deadly Ebola virus including new precautions when taking off personal protective equipment. (Oct. 20) Video provided by AP
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