Navigation Links
Tiny protein provokes healthy bonding between cells
Date:11/25/2008

In human relationships, a certain "spark" often governs whether we prefer one person to another, and critical first impressions can occur within seconds. A team lead by Johns Hopkins researchers has found that cell-to-cell "friendships" operate in much the same way and that dysfunctional bonding is linked to the spread of cancer.

The research was published in the Nov. 18 early online edition of the Proceedings of the National Academies of Sciences and appears in the journal's Nov. 25 print edition.

"Bonding between cells has important health implications," said the study's senior author, Denis Wirtz, a professor of chemical and biomolecular engineering in the Whiting School of Engineering at Johns Hopkins. "When cancer cells break free from their neighbors, they can spread the disease through the body. If we can learn more about this process, we may find new ways to keep cancer in check."

Toward that goal, Wirtz, who also is associate director of the Johns Hopkins Institute for NanoBioTechnology, led a multi-institution team that focused on alpha-catenin, a small protein that floats in the cytoplasm, the gel-like material that surrounds the nucleus inside a cell. Alpha-catenin allows cells to recognize neighboring cells as "friends" almost immediately, leading to the creation of many strong bonds that are hard to break. However, cancer cells, including those found in diffuse gastric cancer and lung cancer, possess dysfunctional alpha-catenin and form very weak bonds with their neighbors. This allows them to break free from cell masses and spread cancer throughout the body.

To better understand these bonding characteristics, Wirtz and his colleagues used a technique called atomic force microscopy to study single cells with and without functioning alpha-catenin. This technique records tiny forces, measured in nanoNewtons, that cells exert upon one another.

Wirtz's team discovered that normal cells with properly functioning alpha-catenin formed bonds that were four times more stable than those without functional alpha-catenin, and these first bonds formed in less than 1 millisecond. The longer the cells remained in contact with one another, the more numerous and stronger these bonds became. The connections between these cells resembled those that occur with a popular type of fastener material. "This accelerated formation of additional bonds between neighboring cells was akin to the 'Velcro' effect," Wirtz said.

In contrast, cells without functional alpha-catenin formed weak bonds from the onset. Also, even as these cells remained in contact, bonding strengths continued to diminish. Wirtz suggested that if scientists could figure out a way to repair or replace the alpha-catenin dysfunction found in some cancer cells, it could lead to a therapy that thwarts the spread of cancer.


'/>"/>

Contact: Mary Spiro
mspiro@jhu.edu
410-516-4802
Johns Hopkins University
Source:Eurekalert  

Related biology news :

1. Protein chatter linked to cancer activation
2. Scientists link fragile X tremor/ataxia syndrome to binding protein in RNA
3. Researchers identify proteins involved in new neurodegenerative syndrome
4. Low levels of key protein may indicate pancreatic cancer risk
5. Structure of 450 million year old protein reveals evolutions steps
6. Scientists retrace evolution with first atomic structure of an ancient protein
7. Specific brain protein required for nerve cell connections to form and function
8. NIH awards researcher $1.5 million new innovator grant for fruit-fly studies of prion proteins
9. Interacting protein theory awaits test from new neutron analysis tools
10. Depression, aging, and proteins made by a virus may all play role in heart disease
11. Census of protein architectures offers new view of history of life
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Tiny protein provokes healthy bonding between cells
(Date:7/20/2017)... WASHINGTON , July 20, 2017 Delta (NYSE: ... to board any Delta aircraft at Reagan Washington National Airport (DCA). ... Delta launches biometrics ... Delta,s ... Delta Sky Club is now integrated into the boarding process to ...
(Date:6/23/2017)... and ITHACA, N.Y. , June ... Cornell University, a leader in dairy research, today announced ... designed to help reduce the chances that the global ... onset of this dairy project, Cornell University has become ... Sequencing the Food Supply Chain, a food safety initiative ...
(Date:5/23/2017)... , May 23, 2017  Hunova, the first robotic gym for the ... been officially launched in Genoa, Italy . The first ... and the USA . The technology was developed ... market by the IIT spin-off Movendo Technology thanks to a 10 million ... News Release, please click: ...
Breaking Biology News(10 mins):
(Date:8/15/2017)... ... ... Kapstone Medical is proud to announce that it has reached ... inventors develop and safeguard their latest innovations. The company has grown from a ... clients in the United States and around the world. , Company Founder and ...
(Date:8/15/2017)... ... 15, 2017 , ... The Conference Forum and The Trout ... a series of upcoming panels and events. The partnership culminates with the 4th ... in New York City. , “With our experience in producing the Immuno-Oncology 360° NYC ...
(Date:8/14/2017)... ... , ... The Conference Forum has confirmed the one-day agenda for ... 6, 2017 at the Marriott Copley Place in Boston, MA. , Returning as program ... Strategy, Pfizer Innovative Research Lab, Pfizer, who leads 19 industry speakers in discussing how ...
(Date:8/10/2017)... , ... August 09, 2017 , ... ... help the agriculture industry reach its ideal customers with the right message. Their ... , “As a Midwest company, we realize how crucial the agriculture industry is,” ...
Breaking Biology Technology: