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Cold Spring Harbor Laboratory scientists trace a novel way cells are disrupted in cancer
Date:10/6/2008

e, a factor known as SF2/ASF was elevated in more than 20% of lung and colon tumors. Moreover, laboratory cultures of mouse or rat cells developed characteristics of tumors when they were programmed to make higher-than-normal levels of this splicing factor.

Changes in the PI3K-mTOR Pathway

In the new research, Krainer's team looked for specific molecules whose concentrations or enzymatic activities changed in cells in which SF2/ASF induced cancer. They found changes in some proteins in a group known as the PI3K-mTOR pathway, which is well known for its involvement in cancers.

The team speculated that SF2/ASF, as it influences how a gene's instructions are translated into protein, might cause a protein to be assembled without a key section that is normally modified by other proteins in the pathway. Krainer cautioned that the splicing factor may act on other proteins or in other ways in the cell, so further research is needed. Nonetheless, the team's research suggests that measuring SF2/ASF levels could eventually lead to a way to identify patients who will respond to existing drugs that block the PI3K-mTOR pathway.


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Contact: Peter Tarr
tarr123@gmail.com
516-367-8455
Cold Spring Harbor Laboratory
Source:Eurekalert

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