Navigation Links
Researchers identify new drug target that stimulates
Date:9/6/2011

NEW YORK, N.Y., Sept. 6, 2011 -- One of the holy grails in diabetes research is to discover molecules that stimulate beta cell growth and to find drugs that target these molecules. Now, JDRF-funded researchers in collaboration with the pharmaceutical company Hoffmann-La Roche, have done both, discovering not only a protein that regulates beta cell growth, but also a chemical compound that stimulates it. The work appears in the September 7 issue of Cell Metabolism.

The discovery, led by Markus Stoffel, M.D., Ph.D., a professor at the Swiss Federal Institute of Technology in Zurich, represents a significant advance in identifying a new drug target for beta cell regeneration.

The work builds on a discovery made five years ago, when Dr. Stoffel and his team first showed that a once obscure protein, called Tmem27, is localized on the surface membrane of beta cells, the insulin-producing cells that are located within islets in the pancreas. At the time, they found that increased levels of Tmem27 on beta cells were associated with increased islet mass in mice. They also found that if Tmem27 is cleaved, it left the protein completely inactivated.

"We hypothesized that if we could prevent Tmem27 from being cleaved and increase the levels of this protein, we could get more beta cell growth," says Dr. Stoffel, who is also a 2010 recipient of JDRF's Gerold & Kayla Grodsky Basic Research Scientist Award. "This observation gave us the rationale to look for what was inactivating Tmem27."

After screening possible molecules that could snip Tmem27, Dr. Stoffel and his team found the culprit: Bace2, an enzyme protein that, like Tmem27, also resides on the outer surface (known as the plasma membrane) of the beta cell. The researchers confirmed their theory by finding that mice that lacked Bace2 had larger islets and the beta cells in the islets increased in number, a process known as proliferation or regeneration. They also found that these mice were able to clear glucose from the blood more efficiently than control mice with Bace2.

Dr. Stoffel and his team next aimed to inhibit Bace2 in an effort to control and promote the growth of beta cells. To do so, they teamed up with scientists at Hoffmann-LaRoche who developed a chemical compound that could inhibit Bace2. When the scientists gave this compound to mice, they saw that it inhibited Bace2 and stimulated the growth of new beta cells. Importantly, Bace2, and not its close relative Bace1, which is implicated in other diseases, cleaves the Tmem27 protein, suggesting the potential for developing a Bace2 inhibitor as a diabetes-specific therapy.

In addition to identifying a new drug target for promoting beta cell regeneration, Dr. Stoffel's work may also help in developing tests to measure the amount of Tmem27 fragments in the blood a biomarker that could be used as an index of beta cell number.

"This is an exciting and potentially impactful finding," says Patricia Kilian, Ph.D., scientific program director of regeneration research at JDRF. "It's an example of how researchers make an early observation and follow up on it, and then take it to the next level where it has translational potential the potential to be developed into a drug that promotes the growth of beta cells for diabetes."


'/>"/>

Contact: Joana Casas
mcasas@jdrf.org
212-479-7560
Juvenile Diabetes Research Foundation International
Source:Eurekalert

Related biology news :

1. NC State researchers get to root of parasite genome
2. Researchers find animal with ability to survive climate change
3. Researchers find an essential gene for forming ears of corn
4. Researchers note differences between people and animals on calorie restriction
5. Researchers study acoustic communication in deep-sea fish
6. Researchers discover that growing up too fast may mean dying young in honey bees
7. Researchers study how pistachios may improve heart health
8. UI researchers find potentially toxic substance present in Chicago air
9. Researchers develop new self-training gene prediction program for fungi
10. Case Western Reserve University researchers track Chernobyl fallout
11. Childrens National researchers develop novel anti-tumor vaccine
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/20/2016)...   MedNet Solutions , an innovative SaaS-based eClinical ... research, is pleased to announce the attainment of record-setting ... result of the company,s laser focus on (and growing ... it,s comprehensive, easy-to-use and highly affordable cloud-based technology platform. ... MedNet growth achievements in 2015 include: , ...
(Date:1/15/2016)... JUAN, Puerto Rico , Jan. 15, 2016 /PRNewswire/ ... companies big and small to find new ways to ... driven culture. iOS and Android ... device based on biometrics, transforming it into a hardware ... request that users swipe their fingerprint on their KodeKey ...
(Date:1/11/2016)... , Jan. 11, 2016 Synaptics Incorporated ... interface solutions, today announced that its ClearPad ® ... (TDDI) products won two separate categories in the 8 ... Innovator and Best Technology Breakthrough. The Synaptics ® ... a simplified supply chain, thinner devices, brighter displays and ...
Breaking Biology News(10 mins):
(Date:2/9/2016)... ... February 08, 2016 , ... ... services, announced today the launch of its revamped and improved website. In an ... service solutions, the redesigned website will better communicate how the company designs and ...
(Date:2/9/2016)... ... February 09, 2016 , ... The publishing industry has ... publishing is one of the popular publication models that has received wider acknowledgement ... and 3000+ International Conferences across the globe, OMICS International is all ...
(Date:2/9/2016)... LONDON , February 9, 2016 ... replace paper and protect IP   E-WorkBook ... will be rolled out in Germany ... and protect valuable IP. Users will be able to search ... or experiment as part of the application, to boost collaboration ...
(Date:2/8/2016)... , Feb. 8, 2016 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ... top ten finalists for clean technology companies in the TSX ... top 10 companies listed on the TSX Venture Exchange, in ... gas, clean technology & life sciences, diversified industries ... weighting given to return on investment, market cap growth, trading ...
Breaking Biology Technology: