Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Lack of coronin 1 protein causes learning deficits and aggressive behavior

26.03.2014

Learning and memory relies on the proper processing of signals that stimulate neuronal cells within the brain.

Researchers at the Biozentrum of the University of Basel, together with an international team of scientists, has uncovered an important role for the protein coronin 1 in cognition and behavior.


The absence of coronin 1 in neurons results in severe neurobehavioral defects. Coronin1 (green) in neurons within the amygdala of the brain. Red: neurofilament as neuronal marker; Blue: nuclear stain

Illustration: University of Basel, Biozentrum

They found that a lack of coronin 1 in mouse and in man is associated with poor memory, defective learning and aggressive behavior. The results, recently published in PLOS Biology, identify a novel risk factor for neurobehavioral dysfunction and reveal a molecular pathway involved in transferring information within neurons.

Organisms must be able to sense signals from the outside and translate these into biochemical cues in order to adequately respond to their environment. This capability is also required to process information that reaches the brain. Within the brain, stimulation of neurons activates genes that are required, for example for learning and memory.

... more about:
»Biozentrum »Lack »cAMP »coronin »deficits »lacking »neurons »signals

In collaboration with an international and interdisciplinary team the research group led by Prof. Jean Pieters from the Biozentrum, University of Basel, has now uncovered the role of an evolutionarily conserved protein, called coronin 1, in providing a link between the extracellular stimulus and neuronal activation that ultimately results in efficient learning and memory in both mice and men.

From the immune system to the brain

In earlier work, Pieters’ team discovered the protein coronin 1 as being essential for the proper transduction of signals in immune cells. In mice lacking coronin 1 the researchers further investigated the molecular mechanism. Surprisingly, these mice showed aberrant behavior. In particular, mice lacking coronin 1 appeared to be far more aggressive and display extreme grooming activity, an indication of reduced sociability.

An in-depth analysis in collaboration with scientists from the Friedrich Miescher Institute in Basel and the University of Bordeaux unveiled profound learning and behavioral problems and severe defects in the ability to activate neurons in the absence of coronin 1.

Activation of a signaling cascade

But how does coronin 1 ensure proper neurobehavioral functioning? Normally, stimulation of the cell surface results in an activation of an intracellular cascade of reactions and ultimately stimulates the production of the signaling molecule cAMP which then activates a number of processes, including the transcription of gene involved in neurobehavior. “We found that in the absence of coronin 1, cell surface stimulation leads to a defective cAMP production”, explains Pieters. “This in turn affects the signal transduction which is finally responsible for the deficits in learning and memory formation.”

Of mice and men

Furthermore, the researchers analyzed the clinical history of a patient lacking coronin 1 due to a mutation: it turned out that this patient showed learning defects and aggressive behavior. With this study, Pieters and his project collaborators not only define a crucial role for coronin 1 in cognition and behavior, but also unravel a coronin 1-dependent signaling pathway that may be explored both for potential risk factors as well as future interventions to modulate neurobehavioral dysfunction.

Original article
Rajesh Jayachandran, Xiaolong Liu, Somdeb BoseDasgupta, Philipp Müller, Chun-Lei Zhang, Despina Moshous, Vera Studer, Jacques Schneider, Christel Genoud, Catherine Fassoud, Fréderic Gambino, Malik Khelfaoui, Christian Müller, Deborah Bartholdi, Helene Rossez, Michael Stiess, Xander Houbaert, Rolf Jaussi, Daniel Frey, Richard A. Kammerer, Xavier Deupi, Jean-Pierre de Villartay, Andreas Lüthi, Yann Humeau, and Jean Pieters
Coronin 1 Regulates Cognition and Behavior through Modulation of cAMP/Protein Kinase A Signaling
PLOS Biology, published March 25, 2014 | doi: 10.1371/journal.pbio.1001820

Further information
Prof. Jean Pieters, University of Basel, Biozentrum, phone +41 61 267 14 94, email: jean.pieters@unibas.ch

www.unibas.ch

Katrin Bühler | Universität Basel

Further reports about: Biozentrum Lack cAMP coronin deficits lacking neurons signals

More articles from Life Sciences:

nachricht Great apes communicate cooperatively
25.05.2016 | Max-Planck-Institut für Ornithologie

nachricht Rice study decodes genetic circuitry for bacterial spore formation
24.05.2016 | Rice University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Computational high-throughput screening finds hard magnets containing less rare earth elements

Permanent magnets are very important for technologies of the future like electromobility and renewable energy, and rare earth elements (REE) are necessary for their manufacture. The Fraunhofer Institute for Mechanics of Materials IWM in Freiburg, Germany, has now succeeded in identifying promising approaches and materials for new permanent magnets through use of an in-house simulation process based on high-throughput screening (HTS). The team was able to improve magnetic properties this way and at the same time replaced REE with elements that are less expensive and readily available. The results were published in the online technical journal “Scientific Reports”.

The starting point for IWM researchers Wolfgang Körner, Georg Krugel, and Christian Elsässer was a neodymium-iron-nitrogen compound based on a type of...

Im Focus: Atomic precision: technologies for the next-but-one generation of microchips

In the Beyond EUV project, the Fraunhofer Institutes for Laser Technology ILT in Aachen and for Applied Optics and Precision Engineering IOF in Jena are developing key technologies for the manufacture of a new generation of microchips using EUV radiation at a wavelength of 6.7 nm. The resulting structures are barely thicker than single atoms, and they make it possible to produce extremely integrated circuits for such items as wearables or mind-controlled prosthetic limbs.

In 1965 Gordon Moore formulated the law that came to be named after him, which states that the complexity of integrated circuits doubles every one to two...

Im Focus: Researchers demonstrate size quantization of Dirac fermions in graphene

Characterization of high-quality material reveals important details relevant to next generation nanoelectronic devices

Quantum mechanics is the field of physics governing the behavior of things on atomic scales, where things work very differently from our everyday world.

Im Focus: Graphene: A quantum of current

When current comes in discrete packages: Viennese scientists unravel the quantum properties of the carbon material graphene

In 2010 the Nobel Prize in physics was awarded for the discovery of the exceptional material graphene, which consists of a single layer of carbon atoms...

Im Focus: Transparent - Flexible - Printable: Key technologies for tomorrow’s displays

The trend-forward world of display technology relies on innovative materials and novel approaches to steadily advance the visual experience, for example through higher pixel densities, better contrast, larger formats or user-friendler design. Fraunhofer ISC’s newly developed materials for optics and electronics now broaden the application potential of next generation displays. Learn about lower cost-effective wet-chemical printing procedures and the new materials at the Fraunhofer ISC booth # 1021 in North Hall D during the SID International Symposium on Information Display held from 22 to 27 May 2016 at San Francisco’s Moscone Center.

Economical processing

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Networking 4.0: International Laser Technology Congress AKL’16 Shows New Ways of Cooperations

24.05.2016 | Event News

Challenges of rural labor markets

20.05.2016 | Event News

International expert meeting “Health Business Connect” in France

19.05.2016 | Event News

 
Latest News

LZH shows the potential of the laser for industrial manufacturing at the LASYS 2016

25.05.2016 | Trade Fair News

Great apes communicate cooperatively

25.05.2016 | Life Sciences

Thermo-Optical Measuring method (TOM) could save several million tons of CO2 in coal-fired plants

25.05.2016 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>