Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Noncoding RNA may promote Alzheimer's disease

31.05.2011
Researchers pinpoint a small RNA that spurs cells to manufacture a particular splice variant of a key neuronal protein, potentially promoting Alzheimer's disease (AD) or other types of neurodegeneration. The study appears in the May 30 issue of The Journal of Cell Biology (www.jcb.org).

Like a movie with an alternate ending, a protein can come in more than one version. Although scientists have identified numerous proteins and RNAs that influence alternative splicing, they haven't deciphered how cells fine-tune the process to produce specific protein versions. Four years ago, researchers identified a set of 30 small, noncoding RNAs that they suspected help regulate gene expression.

Italian researchers have now determined the function of one of the RNA snippets, known as 38A, that hails from a noncoding part of the gene that encodes the protein KCNIP4. KCNIP4 helps ensure that neurons fire impulses in a characteristic slow, repeating pattern. The researchers found that 38A spurs cells to produce an alternative splice variant of KCNIP4, Var IV, that disrupts this current, potentially leading to neurodegeneration.

KCNIP4 normally interacts with gamma-secretase, the enzyme complex that helps generate beta-amyloid (Abeta), a protein that accumulates in the brains of AD patients. But Var IV can't make the connection, possibly disturbing Abeta processing. Supporting that notion, the researchers found that levels of 38A were more than 10 times higher in brain cells from AD patients than in controls and that 38A hiked output of the more dangerous Abeta isoform Abeta 1-42.

About The Journal of Cell Biology

Founded in 1955, The Journal of Cell Biology (JCB) is published by The Rockefeller University Press. All editorial deci-sions on manuscripts submitted are made by active scientists in conjunction with our in-house scientific editors. JCB content is posted to PubMed Central, where it is available to the public for free six months after publication. Authors retain copyright of their published works and third parties may reuse the content for non-commercial purposes under a creative commons license. For more information, please visit www.jcb.org.

Massone, S., et al. 2011. J. Cell Biol. doi:10.1083/jcb.201011053.

Rita Sullivan | EurekAlert!
Further information:
http://www.jcb.org
http://www.rupress.org

Further reports about: Abeta JCB KCNIP4 RNA brain cell cell death noncoding synthetic biology

More articles from Life Sciences:

nachricht Immune Defense Without Collateral Damage
23.01.2017 | Universität Basel

nachricht The interactome of infected neural cells reveals new therapeutic targets for Zika
23.01.2017 | D'Or Institute for Research and Education

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Quantum optical sensor for the first time tested in space – with a laser system from Berlin

For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.

According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Tracking movement of immune cells identifies key first steps in inflammatory arthritis

23.01.2017 | Health and Medicine

Electrocatalysis can advance green transition

23.01.2017 | Physics and Astronomy

New technology for mass-production of complex molded composite components

23.01.2017 | Process Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>