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Calcium connections: Basic pathway for maintaining cell's fuel stores
Date:7/27/2010

cell metabolism.

In the absence of this transfer, the mitochondria fail to make enough ATP, which triggers an extreme cell survival process called autophagy, or self eating.

"We discovered that this self consumption as a response to the lack of the calcium transfer appears to work in many types of cells, including hepatocytes from the liver, vascular smooth muscle cells, and various cultured cells lines," says Foskett.

Autophagy is important for clearing aggregated proteins from cells, for example in neurodegenerative diseases, and it plays a role in cancer and hypertension. The IP3 receptor plays important roles in the regulation of programmed cell death, a process that is subverted in many cancers, and in neurodegenerative diseases, including Alzheimer's and Huntington's diseases. Calcium release from the IP3 receptor may be at the nexus of neurodegeneration, cancer and the role of cell metabolism gone awry in these broad disease classes.


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Contact: Karen Kreeger
karen.kreeger@uphs.upenn.edu
215-349-5658
University of Pennsylvania School of Medicine
Source:Eurekalert  

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