Breast Cancer - Silencing a Deadly Conversation
Silencing the Deadly Conversation
The breast cancer community is excited, however, because Australian researchers have identified a new way of turning off the conversation between the breast cancer cells and the healthy cells that surround them!
The researchers have discovered a special molecule, which they've labeled a "hedgehog," that operates the "switchboard" that transmits the signals between the cancer cells and the healthy cells. They are now able to block this conversation -- silencing the hedgehog -- and when this happens, breast cancer tumors shrink and no longer spread.
Starving the Cancer Cells
The research study involved 279 women with advanced breast cancer. Through the study, researchers learned that the higher level of hedgehog present, the more aggressive was the cancer. With this information, they were able to experiment with laboratory tumors. When the hedgehog was overproduced in the laboratory tumors, the tumors grew rapidly and consumed the surrounding healthy tissue. When the hedgehog was blocked (or starved), the growth of the tumors was slowed considerably.
Types of Cancer Affected
This silencing of the communication between the cancer cells and healthy cells applies to all types of breast cancers. Most important, however, is that the silencing works for women with basal breast cancer -- for which there currently is no target therapy.
The hedgehog silencing drugs are already undergoing Phase 2 clinical trials in other types of cancer, and it is hoped that these findings will rapidly advance the clinical trial process in the breast cancer arena.
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