Navigation Links
U-M scientists slow development of Alzheimer's trademark cell-killing plaques
Date:3/17/2014

ANN ARBORUniversity of Michigan researchers have learned how to fix a cellular structure called the Golgi that mysteriously becomes fragmented in all Alzheimer's patients and appears to be a major cause of the disease.

They say that understanding this mechanism helps decode amyloid plaque formation in the brains of Alzheimer's patientsplaques that kills cells and contributes to memory loss and other Alzheimer's symptoms.

The researchers discovered the molecular process behind Golgi fragmentation, and also developed two techniques to 'rescue' the Golgi structure.

"We plan to use this as a strategy to delay the disease development," said Yanzhuang Wang, U-M associate professor of molecular, cellular and developmental biology. "We have a better understanding of why plaque forms fast in Alzheimer's and found a way to slow down plaque formation."

The paper appears in an upcoming edition of the Proceedings of the National Academy of Sciences. Gunjan Joshi, a research fellow in Wang's lab, is the lead author.

Wang said scientists have long recognized that the Golgi becomes fragmented in the neurons of Alzheimer's patients, but until now they didn't know how or why this fragmentation occurred.

The Golgi structure has the important role of sending molecules to the right places in order to make functional cells, Wang said. The Golgi is analogous to a post office of the cell, and when the Golgi becomes fragmented, it's like a post office gone haywire, sending packages to the wrong places or not sending them at all.

U-M researchers found that the accumulation of the Abeta peptidethe primary culprit in forming plaques that kill cells in Alzheimer's brainstriggers Golgi fragmentation by activating an enzyme called cdk5 that modifies Golgi structural proteins such as GRASP65.

Wang and colleagues rescued the Golgi structure in two ways: they either inhibited cdk5 or expressed a mutant of GRASP65 that cannot be modified by cdk5. Both rescue measures decreased the harmful Abeta secretion by about 80 percent.

The next step is to see if Golgi fragmentation can be delayed or reversed in mice, Wang said. This involves a collaboration with the Michigan Alzheimer's Disease Center at the U-M Health System, directed by Dr. Henry Paulson, professor of neurology, and Geoffrey Murphy, assistant professor of physiology and research professor at the U-M Molecular and Behavioral Neuroscience Institute.

The collaboration was made possible by MCubed, a two-year seed funding program to fuel interdisciplinary teams of U-M faculty to pursue research with major societal impact.


'/>"/>

Contact: Laura Bailey
baileylm@umich.edu
734-647-1848
University of Michigan
Source:Eurekalert

Related medicine news :

1. Scientists solving the mystery of human consciousness
2. Scientists uncover multiple faces of deadly breast cancer
3. Scientists identify major source of cells defense against oxidative stress
4. Scientists tailor cell surface targeting system to hit organelle ZIP codes
5. Scientists rewrite rulebook on breast cancer in landmark global study
6. Warwick scientists uncover how checkpoint proteins bind chromosomes
7. NIH scientists link quickly spreading gene to Asian MRSA epidemic
8. Joslin scientists identify important mechanism that affects the aging process
9. Scripps Research scientists show how memory B cells stay in class to fight different infections
10. Scientists Map Melanomas Genome
11. A*STAR scientists discover switch to boost anti-viral response to fight infectious diseases
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/8/2016)... ... December 08, 2016 , ... Coffey Agencies, a ... and commercial clients in the northern Alabama and Georgia regions, is embarking on ... 1977, Nobis Works has built a network of support and education facilities to ...
(Date:12/7/2016)... , ... December 07, 2016 , ... DrugDev ... announcement that it is one of the early adopters completing EU-U.S. Privacy Shield Certification ... designed to provide companies on both sides of the Atlantic with a mechanism to ...
(Date:12/7/2016)... (PRWEB) , ... December 07, 2016 , ... ... celebrating the passage of the most comprehensive mental health systems reform legislation in ... support of the President, and the commitment of our elected officials to improving ...
(Date:12/7/2016)... York, NY (PRWEB) , ... December 07, 2016 ... ... amounts of the drug in their bodies, a researcher at the Icahn School ... journal Pediatric Research. , The study found that when young children are exposed ...
(Date:12/7/2016)... ... December 07, 2016 , ... ... of Smart Device Remote Control through a new partnership with Splashtop Inc. This ... strengthens its mobile solutions to help businesses maximize their uptime and productivity. , ...
Breaking Medicine News(10 mins):
(Date:12/8/2016)... , Dec. 8, 2016 Henry Schein, Inc. (Nasdaq: ... care products and services to office-based dental, animal health and ... equity investment in Marrodent, one of Poland,s ... $32 million. This transaction was announced on August 30, 2016. ... Poland since 2014, and Marrodent marks ...
(Date:12/8/2016)... Dec 8, 2016 Research and Markets has announced ... report to their offering. ... , The report provides separate comprehensive ... , and Rest of World. Annual estimates and ... historic analysis is provided for these markets. Market data and analytics are ...
(Date:12/7/2016)... Dec. 7, 2016 "Lantus (Insulin Glargine) Biosimilar Clinical Trial & ... biosimilar version of Lantus drug in clinical pipeline. Currently 5 biosimilar version ... Japan , Kenya , Czech ... , China , Slovakia , ... 2 diabetes mellitus. The patent on Lantus expired in 2014. Lantus ...
Breaking Medicine Technology: