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Ovarian cancer cells are more aggressive on soft tissues
Date:5/8/2014

ancer cells on these more rigid environments are flipped for ovarian cancer cells," Dawson said.

After adhering to these soft surfaces, metastatic ovarian cancer cells became more aggressive. Their proliferation increased and they were less responsive to chemotherapeutics. The ovarian cancer cells were also more motile on soft surfaces, moving nearly twice as fast as on rigid surfaces. The team also found that less aggressive cells that do not metastasize do not exhibit any of these changes.

The researchers used techniques that haven't been traditionally used in the study of ovarian cancer. They measured the force exerted by the cells by tracking the displacement of beads in the environment around the cells. The researchers found that the metastatic cells increased their traction forces used to generate motion by three-fold on soft surfaces, but no such change was present in the less aggressive cells.

"We think the behavior that metastatic ovarian cancer cells exert on these soft surfaces is representative of the mechanical tropism that they have for these softer tissues in the gut," Dawson said.

In future work, the researchers will investigate whether ovarian cancer cells have some natural inclination towards this uniquely more aggressive behavior in softer environments.

"We're trying to find out whether there is some internal programming that leads to this aggressive behavior," Dawson said.


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Contact: Brett Israel
brett.israel@comm.gatech.edu
404-385-1933
Georgia Institute of Technology
Source:Eurekalert  

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