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Long-lived breast stem cells could retain cancer legacy
Date:1/26/2014

Researchers from Melbourne's Walter and Eliza Hall Institute have discovered that breast stem cells and their 'daughters' have a much longer lifespan than previously thought, and are active in puberty and throughout life.

The longevity of breast stem cells and their daughters means that they could harbour genetic defects or damage that progress to cancer decades later, potentially shifting back the timeline of breast cancer development. The finding is also integral to identifying the 'cells of origin' of breast cancer and the ongoing quest to develop new treatments and diagnostics for breast cancer.

Breast stem cells were isolated in 2006 by Professors Jane Visvader and Geoff Lindeman and their colleagues at the Walter and Eliza Hall Institute.

Now, in a project led by Dr Anne Rios and Dr Nai Yang Fu that tracked normal breast stem cells and their development the team has discovered that breast stem cells actively maintain breast tissue for most of the life of the individual and contribute to all major stages of breast development. The research was published today in the journal Nature.

Professor Lindeman, who is also an oncologist at The Royal Melbourne Hospital, said discovering the long lifespan and programming of breast stem cells would have implications for identifying the cells of origin of breast cancers.

"Given that these stem cells and their 'daughter' progenitor cells can live for such a long time and are capable of self renewing, damage to their genetic code could lead to breast cancer 10 or 20 years later," Professor Lindeman said. "This finding has important applications for our understanding of breast cancer. We hope that it will lead to the development of new treatment and diagnostic strategies in the clinic to help women with breast cancer in the future."

Professor Visvader said understanding the hierarchy and development of breast cells was critical to identifying the cells that giv
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Contact: Penny Fannin
fannin@wehi.edu.au
61-417-125-700
Walter and Eliza Hall Institute
Source:Eurekalert  

Page: 1 2

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