Featured Research

from universities, journals, and other organizations

Sequence and structure key to prion disease transmission

Date:
June 14, 2010
Source:
Journal of Clinical Investigation
Summary:
Prion diseases are lethal neurodegenerative disorders that include Creutzfeldt-Jakob disease in humans and bovine spongiform encephalopathy (BSE, commonly known as mad cow disease) in cows. New data generated in mice provides greater understanding of the factors that determine how easy it is for prion diseases to be transmitted to a new host species. This information provides new insight into a highly important food safety issue.

Prion diseases are lethal neurodegenerative disorders that include Creutzfeldt-Jakob disease (CJD) in humans and bovine spongiform encephalopathy (BSE; commonly known as mad cow disease) in cows. A team of researchers, led by Adriano Aguzzi and Christina Sigurdson, at UniversitätsSpital Zürich, Switzerland, has generated data in mice that provides greater understanding of the factors that determine how easy it is for prion diseases to be transmitted to a new host species.

Related Articles


This information provides new insight into a highly important food safety issue; dietary exposure to beef contaminated with the BSE agent is believed to have caused nearly 200 cases of variant CJD in humans.

The key infectious agent in prion diseases is PrPSc, a highly aggregated form of the cellular prion protein (PrPC). The ease with which prions from different species can be transmitted to a new host species varies dramatically. The team found that transmission between species with the same protein building block at position 170 in PrPC was relatively easy while it was relatively difficult between those species with different building blocks at that position.

As this protein building block influences the structure of the PrPC protein, the authors suggest that local structure of PrPC affected by the protein building block at position 170 might have a triggering role in prion transmissibility between different species.

The research is published in the Journal of Clinical Investigation.


Story Source:

The above story is based on materials provided by Journal of Clinical Investigation. Note: Materials may be edited for content and length.


Journal Reference:

  1. Christina J. Sigurdson, K. Peter R. Nilsson, Simone Hornemann, Giuseppe Manco, Natalia Fernández-Borges, Petra Schwarz, Joaquín Castilla, Kurt Wüthrich, and Adriano Aguzzi. A molecular switch controls interspecies prion disease transmission in mice. Journal of Clinical Investigation, 2010; DOI: 10.1172/JCI42051

Cite This Page:

Journal of Clinical Investigation. "Sequence and structure key to prion disease transmission." ScienceDaily. ScienceDaily, 14 June 2010. <www.sciencedaily.com/releases/2010/06/100614121556.htm>.
Journal of Clinical Investigation. (2010, June 14). Sequence and structure key to prion disease transmission. ScienceDaily. Retrieved February 27, 2015 from www.sciencedaily.com/releases/2010/06/100614121556.htm
Journal of Clinical Investigation. "Sequence and structure key to prion disease transmission." ScienceDaily. www.sciencedaily.com/releases/2010/06/100614121556.htm (accessed February 27, 2015).

Share This


More From ScienceDaily



More Mind & Brain News

Friday, February 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Foods to Battle Stress

The Best Foods to Battle Stress

Buzz60 (Feb. 26, 2015) — If you&apos;re dealing with anxiety, there are a few foods that can help. Krystin Goodwin (@krystingoodwin) has the best foods to tame stress. Video provided by Buzz60
Powered by NewsLook.com
Sleeping Too Much Or Too Little Might Increase Stroke Risk

Sleeping Too Much Or Too Little Might Increase Stroke Risk

Newsy (Feb. 26, 2015) — People who sleep more than eight hours per night are 45 percent more likely to have a stroke, according to a University of Cambridge study. Video provided by Newsy
Powered by NewsLook.com
Mayor Says District of Columbia to Go Ahead With Pot Legalization

Mayor Says District of Columbia to Go Ahead With Pot Legalization

Reuters - News Video Online (Feb. 25, 2015) — Washington&apos;s mayor says the District of Columbia will move forward with marijuana legalization, despite pushback from Congress. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Marijuana Nowhere Near As Deadly As Alcohol: Study

Marijuana Nowhere Near As Deadly As Alcohol: Study

Newsy (Feb. 25, 2015) — A new study says marijuana is about 114 times less deadly than alcohol. 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