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Lawson researchers engineer a switch to tame aggressive cancers
Date:1/19/2012

LONDON, ON When cancers become aggressive and spread they are the most deadly. Unfortunately, little is known about how to stop this development. A new imaging platform developed by Lawson Health Research Institute's Drs. Ann Chambers and John Lewis is providing insight into just that - the exact moment when cancer cells turn deadly.

Certain proteins, such as E-cadherin, are important for the maintenance of normal tissue structure. When tumors become more aggressive, they often lose E-cadherin, resulting in dramatic changes to their structure, function and ability to spread. But when cancer cells are forced to express E-cadherin, research suggests they behave less aggressively and revert back to normal. Unfortunately, limitations in our ability to directly monitor these effects have made it difficult for scientists to assess the full impact.

In a study released today in PLoS ONE, Drs. Chambers and Lewis reveal a new imaging platform that can modulate and monitor how the effects of a particular protein can affect the entire tumor in real-time. The approach uses a shell-less chick embryo model implanted with human cancer cells. "This accessible set-up allows us to introduce E-cadherin directly into the tumor environment, where it has immediate and dramatic effects," says Dr. Hon Leong, the lead author of this study. "Using 3D time-lapse imaging, the impact of this protein can be visualized and the subsequent effects on cancer cell structure, function and aggressiveness can be monitored in real time for up to 48 hours."

Drs. Chambers and Lewis hope this approach will allow scientists to determine how proteins like E-cadherin can exert their tumor-suppressive properties on the deadly spread of cancer. Through further research, they believe their approach could provide valuable information to help moderate aggressive cancers and improve patient outcomes.

"The insights afforded by this technology will help scientists revisi
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Contact: Sonya Gilpin
sonya.gilpin@lawsonresearch.com
519-685-8500 x75852
Lawson Health Research Institute
Source:Eurekalert

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