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Signal may send cancer's cellular factories into overdrive
Date:7/9/2014

lls took longer to recover from ER stress and the ER factory shrank.

Their findings suggest the TOR signalling pathway promotes cell growth while simultaneously ensuring productivity of the ER matches this growth. And the protein SREBP, which is part of the TOR signalling pathway, appeared to be essential for promoting expansion of the ER, and ensuring it carried out its factory activities effectively.

Lead author Dr Chris Bakal, leader of the Dynamical Cell Systems Team at The Institute of Cancer Research, London, said: "The endoplasmic reticulum is the factory of our cells, creating the proteins and lipids needed for our cells to grow and proliferate. In cancer cells, this factory is active all the time, churning out the building blocks that cancer cells need for their rapid growth.

"We have discovered the key role played by the TOR signalling pathway in driving the expansion of the endoplasmic reticulum, and sending a cell's factories into overdrive. The TOR pathway is active in many types of cancer, and our study provides new insights into how cancer metabolism works, and suggests that these metabolic signals could be excellent targets for future treatments."


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Contact: Graham Shaw
graham.shaw@icr.ac.uk
020-715-35380
Biotechnology and Biological Sciences Research Council
Source:Eurekalert

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