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Stem Cell Proliferation in the Skin: {alpha}-Catenin Takes Over the Hippo Pathway

Epithelial tissues in the human body undergo constant renewal. For example, the skin is regenerated continuously through the periodic proliferation of normally quiescent stem cells in the basal compartment of the skin. Proper balance between stem cell quiescence and proliferation is maintained over the lifetime of the organism to preserve pools of stem cells required to maintain and repair tissues. However, mechanisms controlling the rate of stem cell renewal are poorly understood. Additionally, whether deregulation of these mechanisms within epidermal stem cells leads to skin cancer is not known. The adherens junction component α-catenin has been identified as a regulator of epidermal stem cell proliferation and as a suppressor of skin cancer through its inhibition of Yap, a transcriptional effector of the Hippo growth control pathway. Understanding the pathways that regulate the proliferation of stem cells in the skin holds promise for reversing the aging process and tumor development.

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Classifications


Resource Type: Bibliography, Diagram, Illustration, Journal article/Issue, Review
Audience Level: Undergraduate upper division 15-16, Graduate, Professional (degree program)

Author and Copyright


Authors and Editors: Elsa R. Flores of Department of Biochemistry and Molecular Biology, The University of Texas M. D. Anderson Cancer Center, Georg Halder of Department of Biochemistry and Molecular Biology, The University of Texas M. D. Anderson Cancer Center
Publisher: American Association for the Advancement of Science
Format: application/pdf, image/gif, image/jpeg, text/html
Copyright and other restrictions: Yes
Cost: Yes

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Collection:
STKE/Science Signaling


     
   

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