Navigation Links
Sugar Helps Control Cell Division

Johns Hopkins scientists have discovered that a deceptively simple sugar is in fact a critical regulator of cells' natural life cycle.//

The discovery reveals that, when disturbed, this process could contribute to cancer or other diseases by failing to properly control the steps and timing of cell division, the researchers say.

The sugar, known as O-GlcNAc (pronounced oh-GLUCK-nack), is used inside cells to modify proteins, turning the proteins off or on, helping or preventing their interactions with other proteins, keeping them from destruction or allowing their destruction. The comings and goings of the sugar on proteins seem to be important controllers of cell division, say the researchers.

"Cells with more than one nucleus can survive, but they are dysregulated -- things just don't go right," says Slawson. "The longer they survive, the worse it gets."

On the other hand, cells that had higher than normal amounts of the enzyme that removes the sugar from proteins ended up with nuclei that didn't look right under a powerful microscope. Instead of being disseminated fairly uniformly through the entire nucleus, the genetic material of these cells was bunched up, giving the contents of the nucleus a "wrinkly" appearance.

Exactly what is going wrong is still unclear, adds Gerald Hart, Ph.D., professor and director of biological chemistry. He's been studying O-GlcNAc since his lab discovered it attached to proteins inside cells 20 years ago. They now know which enzymes put the sugar onto proteins and which enzymes take it off -- and knocking out or blocking these enzymes allowed the researchers to control whether proteins were sugar-laden or sugar-free.

The sugar seems to modify as many proteins as the ubiquitous phosphate groups widely recognized as protein controllers, and it frequently seems to compete with phosphate groups for the same spots on proteins. Hart suggests that a particular bala nce between O-GlcNAc and phosphates on proteins may help fine-tune their activities.

The researchers' next steps are to examine select proteins modified by O-GlcNAc and found at locations important for various steps in cell division to figure out why an imbalance of O-GlcNAc on the cells' proteins has such a dramatic effect on the process.

The researchers were funded by the National Institute of Child Health and Human Development, the National Institute of Diabetes and Digestive and Kidney Diseases and the National Cancer Institute.

Source: Journal of Biological Chemistry
'"/>




Related medicine news :

1. Blood Sugar Linked to Deaths in ICU
2. Sugar Cravings
3. Effective Control Of Blood Sugar Levels
4. Sugar - Sweetened Drinks Found To Increase Risk of Diabetes
5. Diabetics Can Now Be Able To Control Both Blood Sugar And Their Weight
6. Elevated Blood Sugar Levels A Risk Factor Of Heart Disease
7. Better Control Of Sugar Levels
8. Link Between High Blood Sugar And Behavioral Changes
9. Herb Found To Be Effective In Controlling Blood Sugar Levels
10. Sugar-Free Yogurt Can Stop Bad Breath
11. Blood Sugar Kept In Control By Novel Protein
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/4/2016)... ... May 04, 2016 , ... Hight-Doland Insurance Agency’s new community involvement ... with Big Brothers Big Sisters of Southwest Louisiana to help provide positive mentoring for ... , Big Brothers Big Sisters of Southwest Louisiana has been helping to guide the ...
(Date:5/4/2016)... Island (PRWEB) , ... May 04, 2016 , ... ... in April 2016. SS&A teamed up with one of the top website design ... information portal contains informative legal articles related to the law firm's main practice ...
(Date:5/4/2016)... ... , ... Recognizing that lifestyle medicine is essential to health and healthcare, ... Katz, MD, MPH, president of the American College of Lifestyle Medicine, as their first ... gratifying,” said Katz. “There is so much opportunity to add years to lives, and ...
(Date:5/4/2016)... CA (PRWEB) , ... May 04, 2016 , ... The ... that ex-supermodel Janice Dickinson needed following breast cancer surgery. In March 2016, the 61-year-old ... a type of breast cancer that occurs in the milk ducts, according to an ...
(Date:5/4/2016)... Prairie du Sac, Wisconsin (PRWEB) , ... ... ... The OMNIFORCE collection delivers next-level compression and support for knees, ankles, and ... a great value. , Innovative 3D flat-bed manufacturing (opposed to ineffective circular ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... 2016 Research and ... Acute Myeloid Leukemia Market and Competitive Landscape ...      (Logo: http://photos.prnewswire.com/prnh/20160330/349511LOGO ... and Competitive Landscape Highlights 2016, provides comprehensive ... Acute Myeloid Leukemia epidemiology, Acute Myeloid Leukemia ...
(Date:5/3/2016)... -- Research and Markets has announced the ... Market Outlook 2020" report to their offering. ... technology has improved significantly in past years due to ... coming years. Many cancer drugs have been developed by ... also expected to be developed with its help. They ...
(Date:5/3/2016)... 3, 2016  While you may be familiar with watching a film or TV show in ... ultra-high-definition or 8MP in the Medical Industry.  Ampronix  is a renowned authorized reseller of the ... Photo - http://photos.prnewswire.com/prnh/20160502/362730 ... ... ...
Breaking Medicine Technology: