Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Normal role for schizophrenia risk gene identified

10.09.2007
DISC1 makes protein that helps new neurons integrate into our neural network

How the gene that has been pegged as a major risk factor for schizophrenia and other mood disorders that affect millions of Americans contributes to these diseases remains unclear.

However, the results of a new study by Hopkins researchers and their colleagues, appearing in Cell this week, provide a big clue by showing what this gene does in normal adult brains.

It turns out that this gene, called disc1, makes a protein that serves as a sort of musical conductor for newly made nerve cells in the adult brain, guiding them to their proper locations at the appropriate tempo so they can seamlessly integrate into our complex and intertwined nervous system. If the DISC1 protein doesn’t operate properly, the new nerves go hyper.

... more about:
»DISC1 »Nerve »role »schizophrenia

“DISC1 plays a broader role in the development of adult nerves than we anticipated,” says Hongjun Song, Ph.D., an associate professor at Hopkins’ Institute for Cell Engineering. “Some previous studies hinted that DISC1 is important for nerve migration and extension, but our study in mice suggests it is critical for more than that and may highlight why DISC1 is associated with multiple psychiatric disorders.”

“Almost every part of the nerve integration process speeds up,” adds fellow author Guo-li Ming, M.D., Ph.D., also an associate professor at ICE. “The new nerves migrate and branch out faster than normal, form connections with neighbors more rapidly, and are even more sensitive to electrical stimulation.”

While it may not be obvious why high-speed integration would be detrimental, Song notes that because of the complexity of the brain, timing is critical to ensure that new nerves are prepared to plug into the neural network.

Ming, Song and their collaborators at the National Institutes of Health and UC Davis tracked the abnormal movements of the hyperactive nerve cells by injecting a specially designed virus into a part of a mouse brain known as the hippocampus -a region important for learning and memory and therefore quite relevant to psychiatric disorders. The virus would only infect newly born cells and would both knock down the expression of the disc1 gene and make the nerves glow under a microscope.

Combined with other recent Hopkins research that successfully engineered mouse models that have abnormal DISC1 and can effectively reproduce schizophrenia symptoms such as anxiety, hyperactivity, apathy and altered senses, these current findings teasing out the normal role of this protein may help unravel the causes for this complex disease

Song and Ming add that their studies in the hippocampus - one of the few places where new nerves are made in the adult brain - might answer why symptoms typically first appear in adults despite the genetic basis of many psychiatric illnesses. They plan on continuing their mouse work to try and find those answers.

Nick Zagorski | EurekAlert!
Further information:
http://www.cell.org
http://www.hopkins-ice.org/neuro/int/song.html

Further reports about: DISC1 Nerve role schizophrenia

More articles from Life Sciences:

nachricht Transforming plant cells from generalists to specialists
07.12.2016 | Duke University

nachricht What happens in the cell nucleus after fertilization
06.12.2016 | Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Predicting unpredictability: Information theory offers new way to read ice cores

07.12.2016 | Earth Sciences

Sea ice hit record lows in November

07.12.2016 | Earth Sciences

New material could lead to erasable and rewriteable optical chips

07.12.2016 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>