Navigation Links
New mechanism for long-term memory formation discovered
Date:3/25/2013

Irvine, Calif., March 25, 2013 UC Irvine neurobiologists have found a novel molecular mechanism that helps trigger the formation of long-term memory. The researchers believe the discovery of this mechanism adds another piece to the puzzle in the ongoing effort to uncover the mysteries of memory and, potentially, certain intellectual disabilities.

In a study led by Marcelo Wood of UC Irvine's Center for the Neurobiology of Learning & Memory, the team investigated the role of this mechanism a gene designated Baf53b in long-term memory formation. Baf53b is one of several proteins making up a molecular complex called nBAF.

Mutations in the proteins of the nBAF complex have been linked to several intellectual disorders, including Coffin-Siris syndrome, Nicolaides-Baraitser syndrome and sporadic autism. One of the key questions the researchers addressed is how mutations in components of the nBAF complex lead to cognitive impairments.

In their study, Wood and his colleagues used mice bred with mutations in Baf53b. While this genetic modification did not affect the mice's ability to learn, it did notably inhibit long-term memories from forming and severely impaired synaptic function.

"These findings present a whole new way to look at how long-term memories form," said Wood, associate professor of neurobiology & behavior. "They also provide a mechanism by which mutations in the proteins of the nBAF complex may underlie the development of intellectual disability disorders characterized by significant cognitive impairments."

How does this mechanism regulate gene expression required for long-term memory formation? Most genes are tightly packaged by a chromatin structure chromatin being what compacts DNA so that it fits inside the nucleus of a cell. That compaction mechanism represses gene expression. Baf53b, and the nBAF complex, physically open the chromatin structure so specific genes required for long-term memory formation are turned on. The mutated forms of Baf53b did not allow for this necessary gene expression.

"The results from this study reveal a powerful new mechanism that increases our understanding of how genes are regulated for memory formation," Wood said. "Our next step is to identify the key genes the nBAF complex regulates. With that information, we can begin to understand what can go wrong in intellectual disability disorders, which paves a path toward possible therapeutics."


'/>"/>
Contact: Tom Vasich
tmvasich@uci.edu
949-824-6455
University of California - Irvine
Source:Eurekalert

Related medicine news :

1. Fungus uses copper detoxification as crafty defense mechanism
2. BUSM authors propose potential epigenetic mechanisms for improved cancer therapy
3. A new mechanism that contributes to the evolution of cancer
4. Singapore scientists led by A*STARs GIS identify 4 mechanisms that contribute to gastric cancers
5. Cancer scientists determine mechanism of 1 of the most powerful tumor-suppressor proteins, Chd5
6. Research sheds new light on mechanisms of T-ALL, a form of leukemia that primarily affects children
7. Scientists discover mechanism that could reduce obesity
8. New mechanism for cancer progression discovered by UNC and Harvard researchers
9. Novel mechanism through which normal stromal cells become cancer-promoting cells identified
10. Mechanism of breathing muscle paralysis in dreaming sleep identified
11. New mechanism of action for PARP inhibitors discovered
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/24/2017)... ... January 24, 2017 , ... OMI Industries, a worldwide ... a distribution partnership with Byers Scientific & Manufacturing , a leading designer, ... the agreement, OMI Industries formulated a special version of Ecosorb® for Byers Scientific ...
(Date:1/24/2017)... ... ... This Saturday, January 28, the BCFA presents more than 20 local performances including Chinese ... Yifan Zhou, Mara McClain & Sarah Nordlund Dennis. Local chefs and restaurants provide a ... Chinese games, crafts & more. Festivities begin at 11:00 am and end at 2:30 ...
(Date:1/24/2017)... ... January 24, 2017 , ... The results from the ... everyone and particularly good news for prostate cancer patients: incidents of cancer is down ... to the report the cancer death rate has dropped from its peak of 215.1 ...
(Date:1/24/2017)... ... January 24, 2017 , ... Today, Taza ... latest award-winning bottles, designed specifically to optimize the drinking experience for K-Cup coffee, ... renowned for introducing the world’s first untouched bottled water purposed exclusively for creating ...
(Date:1/24/2017)... ... January 24, 2017 , ... “Choosing ... like finances, friendship, marriage, leadership, gossip, prostitution, adultery, anger, and common sense. ... Dr. Judith Coats and Dr. David Coats. In September of 1983, they flew ...
Breaking Medicine News(10 mins):
(Date:1/24/2017)...  In a major study released this weekend ... 1 ( http://www.multivu.com/players/English/7899551-nephrocheck-test-acute-kidney-injury-outcomes/ ), Astute ... identified patients at high risk of Acute Kidney ... randomized control trial led by Alexander Zarbock ... institution,s standard of care or a treatment per ...
(Date:1/24/2017)... Jan. 24, 2017 When tragedy strikes, victims often can,t ... what conditions they have, and who back home is wondering about ... ones informed about the safety of their family and friends, while ... victims in times of crisis. ... If you find yourself or your family in one ...
(Date:1/24/2017)... 2017 Market Research Future has a half cooked research ... market for Plastic Surgery & Integumentary System is growing rapidly and ... forecasted period. Market Highlights ... Global Plastic Surgery & Integumentary System Market has ... market will reach high growth figures and thriving in the coming ...
Breaking Medicine Technology: