Navigation Links
Study finds 2 gene classes linked to new prion formation
Date:5/26/2011

Unlocking the mechanisms that cause neurodegenerative prion diseases may require a genetic key, suggest new findings reported by University of Illinois at Chicago distinguished professor of biological sciences Susan Liebman.

Prions can turn a normal protein into a misfolded form. One prion in mammals promotes progressive neurodegenerative disorders like "mad cow" disease that often prove fatal. But how this process happens remains an open question for scientists.

Prions have been found to exist in a wide range of organisms. Those in brewer's yeast, which researchers like Liebman study, provide critical insight into how prions work.

Prion proteins in yeast aggregate, while non-prion proteins do not. Aggregation of new prions happens spontaneously -- but, in the natural world, very slowly.

Anita Manogaran, a former UIC research assistant professor in biological sciences, working with Liebman, sped-up prion formation to identify genes important in the process. The researchers were also able to monitor different stages of prion appearance by tagging prion proteins with another protein that fluoresces green. Cells in the process of forming prions had fluorescent rings, which could give rise to cells with prions.

"We learned there are some genes important for the generation of prions," Liebman said.

Some 400 yeast genes were screened for the ability to prevent the new appearance of yeast prion proteins.

"Through a number of screens, we came down to a much smaller number (of genes) that inhibited prion appearance," Liebman said. These genes fell into two classes -- one that could still make the rings, which is the hallmark of the beginning of prion aggregation. But the other class of genes had trouble forming rings, Liebman said.

Liebman and Manogaran also looked beyond new prion formation to see if these same genes had an effect on toxicity associated with a protein that causes Huntington's disease -- a fatal human neurodegenerative disorder.

"We found that genes that could make rings also were more toxic in the presence of the Huntington's disease protein," Liebman said. "If no rings were made, they were less toxic."

The full implications of the findings are not yet understood, Liebman cautioned.

"The more we understand about these mechanisms and the genes that are involved, the more we'll be able to understand the new appearance of prion disease -- like Creutzfeldt-Jakob and 'mad cow' -- and Huntington's disease. The more we understand what affects toxicity, the more we'll understand why these are toxic."


'/>"/>

Contact: Paul Francuch
francuch@uic.edu
312-996-3457
University of Illinois at Chicago
Source:Eurekalert

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. £2 million study to reveal workings of dementia genes
3. New study looks to define evangelicals and how they affect polling
4. CU-Boulder study suggests air quality regulations miss key pollutants
5. Researchers study acoustic communication in deep-sea fish
6. Study reveals homeowner perceptions in fire-prone areas
7. Researchers study how pistachios may improve heart health
8. Study: urban black bears live fast, die young
9. New study indicates link between weight gains during pregnancy and dieting history
10. Study reveals specific gene in adolescent men with delinquent peers
11. Sweat it out: UH study examines ability of sweat patches to monitor bone loss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/2/2017)... 2, 2017   TapImmune, Inc. (NASDAQ: ... specializing in the development of innovative peptide and ... cancer and metastatic disease, announced today it has ... of a second clinical lot of TPIV 200, ... alpha. The manufactured vaccine product will be used ...
(Date:2/1/2017)... IDTechEx Research, a leading provider of independent market research, ... a new report, Sensors for Robotics: Technologies, Markets and Forecasts ... ... Revenues ... "Sensors for Robotics: Technologies, Markets and Forecasts 2017-2027: Machine vision, force ...
(Date:1/26/2017)... -- Crossmatch, a leading provider of security and identity management ... fraud, waste and abuse in assistance operations around the ... Disaster Relief conference in Panama City ... foreign assistance organizations throughout Latin America ... largely unacknowledged problem in the foreign assistance and disaster ...
Breaking Biology News(10 mins):
(Date:2/23/2017)... ATLANTA , Feb. 23, 2017  In Atlanta, it ... art, fashion, and culture intertwine to create an expressive and ... often reflect this energy and contribute to it. ... , Hair Fairies seeks to carry on that ... The Atlanta salon is the newest ...
(Date:2/23/2017)... ... February 23, 2017 , ... ... 12th annual Inventors Recognition Reception at Purdue Research Park of West ... member in recognition of outstanding contributions to, and success with, commercializing discoveries from ...
(Date:2/23/2017)... SAN FRANCISCO , Feb. 23, 2017 ... company, and Beyond Type 1, a not-for-profit advocacy and ... today announced a grant from Beyond Type 1 to ... type 1 and other insulin-requiring diabetes.  ... innovative stem cell-derived cell replacement therapies with a focus ...
(Date:2/22/2017)... -- PrimeVax Immuno-Oncology, Inc. announced today its CEO, Tony ... Global Life Science Partnering Conference.  The presentation will take ... Torrey Pines Lodge, in San Diego.  ... have chosen our company, amongst numerous others, to present ... clinical researchers," said Mr. Chen. "In contrast to conferences ...
Breaking Biology Technology: