Navigation Links
A new cellular garbage control pathway with relevance for human neurodegenerative diseases
Date:7/18/2014

This news release is available in German.

Proteins, the components of our body that execute, control and organize basically all functions in our cells, are made out of strings of amino acids, which like an origami - are folded into specific and complex three-dimensional structures according to their desired functions. However, since folding and maintaining of such structures is highly sensitive to cellular or environmental stress, proteins can potentially misfold or form clumps (aggregates). Such undesired protein waste can be toxic for cells and may even lead to cell death. Because several human neurodegenerative diseases are known to be linked to an accumulation of abnormal protein aggregates, basic science aimed to understand how cells remove cellular garbage is elementary for designing strategies for a potential prevention or cure of such disorders.

Scientists in the laboratory of Stefan Jentsch at the MPIB now successfully used baker's yeast for screening for new cellular waste disposal pathways. Kefeng Lu, a postdoctoral researcher from China, discovered a new class of helper proteins (termed CUET proteins) present both in yeast and humans that recognize cellular garbage earmarked for disposal by an attached label in the form of the ubiquitously existing protein known as "ubiquitin". Importantly, these newly identified helper proteins channel the cellular garbage by a "self-eating" pathway (autophagy) to the lysosome, a compartment of cells dedicated for destruction and recycling. The Max Planck scientists could also show that a toxic protein related to the abnormal, aggregate-forming protein "huntingtin" of patients with the neurodegenerative Huntington's disease is efficiently destroyed by the newly identified pathway. Remarkably, this pathway seems specific for aggregated proteins like huntingtin and appears to be more potent than previously discovered cellular garbage disposal mechanisms.

Because the identified cellular disposal mechanism operates in yeast as well, the researches will now take full advantage of its powerful experimental possibilities to investigate this pathway further. A detailed analysis of this mechanism will be crucial to understand how aggregate-forming proteins lead to human diseases and may help to develop concepts for possible disease preventions.


'/>"/>

Contact: Anja Konschak
konschak@biochem.mpg.de
0049-898-578-2824
Max Planck Institute of Biochemistry
Source:Eurekalert  

Related biology news :

1. Why anandamide can increase intracellular Ca2+ concentration?
2. Cellular defence against fatal associations between proteins and DNA
3. Cellular gates for sodium and calcium controlled by common element of ancient origin
4. Cellular team players
5. Researchers discover Trojan Horse method of penetrating cellular walls without harm
6. Family of proteins plays key role in cellular pump dynamics
7. Scientists capture most detailed images yet of humans tiny cellular machines
8. Which came first, bi- or tricellular pollen? New research updates a classic debate
9. UNC researchers link aging to cellular interactions that occur across generations
10. Organization of cellular photosystems
11. Protein rescues stuck cellular factories
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A new cellular garbage control pathway with relevance for human neurodegenerative diseases
(Date:4/26/2016)... 2016 Research and Markets has ... Market 2016-2020"  report to their offering.  , ,     ... The analysts forecast the global multimodal biometrics market ... the period 2016-2020.  Multimodal biometrics is ... as the healthcare, BFSI, transportation, automotive, and government ...
(Date:4/13/2016)... physicians supporting Medicaid patients in Central Florida ... telehealth thanks to a new partnership with higi.   ... can routinely track key health measurements, such as blood ... they opt in, share them with IMPOWER clinicians through ... location at no cost. By leveraging this data, IMPOWER ...
(Date:3/22/2016)... India , March 22, 2016 /PRNewswire/ ... market research report "Electronic Sensors Market for Consumer ... Proximity, & Others), Application (Communication & IT, ... Geography - Global Forecast to 2022", published ... industry is expected to reach USD 26.76 ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... discussions on a range of subjects including policies, debt and ... Poloz. Speaking at a lecture to the Canadian ... to the country,s inflation target, which is set by both ... "In certain areas there needs to be ... why not sit down and address strategy together?" ...
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica ... in people with peritoneal or pleural mesothelioma. Their findings are the subject of a ... , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of ...
(Date:6/23/2016)... 2016   Boston Biomedical , an industry ... to target cancer stemness pathways, announced that its ... Drug Designation from the U.S. Food and Drug ... including gastroesophageal junction (GEJ) cancer. Napabucasin is an ... cancer stemness pathways by targeting STAT3, and is ...
(Date:6/23/2016)... Houston Methodist Willowbrook Hospital has signed ... to serve as their official health care provider. ... will provide sponsorship support, athletic training services, and ... volunteers, athletes and families. "We are ... and to bring Houston Methodist quality services and ...
Breaking Biology Technology: