Quantcast

Latest Methylation Stories

2010-12-31 12:21:01

(Ivanhoe Newswire) "“ Many mechanisms change the activity of genes. Epigenetics determine when genes are turned on and off, and these epigenetics allow for cells to become cancerous. This was especially seen in ovarian cancer. Researchers at the Duke Cancer Institute have found evidence of epigenetics at work on a genome-wide scale in cases of ovarian cancer. One major biological signaling pathway in particular was found to contain many genes influenced by DNA methylation, a mechanism...

2010-12-23 17:18:28

Study examines effects of supplementation, other factors, on gene methylation People with higher levels of folate in their red blood cells were more likely to have two tumor-suppressing genes shut down by methylation, a chemical off switch for genes, researchers report in the December issue of Cancer Prevention Research. DNA hypermethylation, notes co-author Jean-Pierre Issa, M.D., professor in MD Anderson's Department of Leukemia, is found in a variety of cancers and diseases of aging, such...

2010-12-16 13:18:15

A newly published insight into the biology of many kinds of less-aggressive but still lethal brain tumors, or gliomas, opens up a wide array of possibilities for new therapies, according to scientists at Brown University and the University of California, San Francisco (UCSF). In paper published online Dec. 15 in the Journal of the National Cancer Institute, they describe how a genetic mutation leads to an abnormal metabolic process in the tumors that could be targeted by drug makers. "What...

2010-12-14 14:55:49

Ovarian cancer is the leading cause of death among gynecological cancers. To better understand the disease and improve therapies, researchers are investigating how deregulation of genes across the genome could be contributing to malignancy. In a study published online today in Genome Research (www.genome.org), scientists have identified age-related gene-specific accumulation of DNA methylation that suppresses a critical cellular pathway contributing to ovarian carcinogenesis, information that...

2010-12-14 14:36:37

There are many mechanisms that alter the activity of genes "“ direct changes to the DNA code like mutations and deletions, or changes that control when genes are switched on and off, called epigenetic means. Tumor-suppressor genes are often inactivated through epigenetics, which provides an opening for the cancerous growth of cells. Researchers at the Duke Cancer Institute have found evidence of epigenetics at work on a genome-wide scale in cases of ovarian cancer. One major biological...

2010-12-13 13:46:28

Researchers at Emory University School of Medicine and the University of Chicago have developed a method for labeling and mapping a "sixth nucleotide," whose biological role scientists are only beginning to explore. The method is described online this week in Nature Biotechnology. The method allowed the researchers to see for the first time how 5-hydroxymethylcytosine (5-hmC) is distributed throughout the genome. Unlike 5-methylcytosine (5-mC), a chemical modification of DNA that is generally...

09f9bbb1091b94c3a60005a3797e3b5d1
2010-11-11 10:32:03

Scientists have observed, for the first time, an intermediate stage in the chemical process that repairs DNA methylation damage and regulates many important biological functions that impact health conditions such as obesity, cancer and diabetes. The observations focused on the bacterial DNA repair protein AlkB, but the results also apply to several proteins in the same family that play key regulatory roles in humans. Armed with these results, researchers may one day develop methods for...

2010-11-10 12:42:26

DNA methylation plays an important role in many processes such as animal development, X-chromosome inactivation, and carcinogenesis. Understanding the mechanisms and functions of DNA methylation and how it varies from tissue to tissue and between individuals will have profound implications for human health and disease. A team of Chinese researchers decoded the essentially complete methylome (an inventory of all the bases that are methylated) of the human genome using peripheral blood...

cbb7acd758c084c86eee9fec3b9baa731
2010-11-03 12:12:00

It is hard to believe that they belong to the same species: The large, long-lived queen bee is busy producing offspring throughout her lifetime. The much smaller worker bees, on the other hand, gather food, take care of the beehive, look after and feed the brood "“ but they are infertile. "The honey bee is an extreme example of different larval development," Professor Frank Lyko explains. Lyko, a scientist at DKFZ, studies how genes are regulated by chemical labeling with methyl groups....

2010-10-14 16:25:00

IPSWICH, Mass., Oct. 14 /PRNewswire/ -- New England Biolabs (NEB) has launched a suite of new and validated products designed to simplify DNA methylation analysis for epigenetics researchers. These enzyme-based solutions address some of the challenges of the current methods, including the lack of a reproducible method for the analysis and quantitation of 5-hydroxymethlcytosine (5-hmC) in the epigenome. (Logo: http://photos.prnewswire.com/prnh/20090921/NE79207LOGO-b ) (Logo:...


Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
Related