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Hippo pathway to better cancer treatment? Unusual key to regulating cell growth

Date:
July 11, 2013
Source:
University of British Columbia
Summary:
Researchers have discovered a potential new pathway to treat cancer by asking some odd questions about the size of animals.

Researchers at the University of British Columbia have discovered a potential new pathway to treat cancer by asking some odd questions about the size of animals.

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"Mammals display a huge range in size from the largest blue whale to the tiniest fruit bat," says Colby Zaph, assistant professor of Pathology and Laboratory Medicine at the Biomedical Research Centre, who co-authored the study published in Developmental Cell.

"So why don't we have miniature whales or gigantic bats? It turns out that there are specific pathways that tell cells when to grow and when to stop."

One of those pathways is called the Hippo pathway -- a key control in how our organs are perfectly suited to our bodies, despite differences in size. Zaph, along with postdoctoral research fellow Menno Oudhoff, uncovered that size differences could be manipulated after a specific chemical modification called methylation dramatically affected its function.

Using mice genetically lacking an enzyme called Set7, the results show that methylation of a protein called Yap is critical for the function of the Hippo pathway. Loss of the Set7 enzyme resulted in cell growth and larger organs.

"It's too early to tell how successful modifying this pathway could be in terms of helping with treatment of cancer. But based on our results, drugs that may activate the Set7 enzyme -- to stop cell growth -- may be invaluable to fighting cancers with Hippo pathway mutations" says Zaph.

The pathway has gone relatively unchanged despite evolution and could play a crucial role in regenerative medicine, including in skin growth and liver regeneration.

"Harnessing these results to treat diseases is now the next step."


Story Source:

The above story is based on materials provided by University of British Columbia. Note: Materials may be edited for content and length.


Journal Reference:

  1. MennoJ. Oudhoff, SpencerA. Freeman, AmberL. Couzens, Frann Antignano, Ekaterina Kuznetsova, PaulH. Min, JeffreyP. Northrop, Bernhard Lehnertz, Dalia Barsyte-Lovejoy, Masoud Vedadi, CherylH. Arrowsmith, Hiroshi Nishina, MichaelR. Gold, FabioM.V. Rossi, Anne-Claude Gingras, Colby Zaph. Control of the Hippo Pathway by Set7-Dependent Methylation of Yap. Developmental Cell, 2013; DOI: 10.1016/j.devcel.2013.05.025

Cite This Page:

University of British Columbia. "Hippo pathway to better cancer treatment? Unusual key to regulating cell growth." ScienceDaily. ScienceDaily, 11 July 2013. <www.sciencedaily.com/releases/2013/07/130711135308.htm>.
University of British Columbia. (2013, July 11). Hippo pathway to better cancer treatment? Unusual key to regulating cell growth. ScienceDaily. Retrieved November 21, 2014 from www.sciencedaily.com/releases/2013/07/130711135308.htm
University of British Columbia. "Hippo pathway to better cancer treatment? Unusual key to regulating cell growth." ScienceDaily. www.sciencedaily.com/releases/2013/07/130711135308.htm (accessed November 21, 2014).

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