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mTORC1 and mTORC2 regulate skin morphogenesis and epidermal barrier formation

Ding, Xiaolei and Bloch, Wilhelm and Iden, Sandra and Rüegg, Markus A. and Hall, Michael N. and Leptin, Maria and Partridge, Linda and Eming, Sabine A.. (2016) mTORC1 and mTORC2 regulate skin morphogenesis and epidermal barrier formation. Nature Communications, 7. p. 13226.

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Abstract

Mammalian target of rapamycin (mTOR), a regulator of growth in many tissues, mediates its activity through two multiprotein complexes, mTORC1 or mTORC2. The role of mTOR signalling in skin morphogenesis and epidermal development is unknown. Here we identify mTOR as an essential regulator in skin morphogenesis by epidermis-specific deletion of Mtor in mice (mTOR(EKO)). mTOR(EKO) mutants are viable, but die shortly after birth due to deficits primarily during the early epidermal differentiation programme and lack of a protective barrier development. Epidermis-specific loss of Raptor, which encodes an essential component of mTORC1, confers the same skin phenotype as seen in mTOR(EKO) mutants. In contrast, newborns with an epidermal deficiency of Rictor, an essential component of mTORC2, survive despite a hypoplastic epidermis and disruption in late stage terminal differentiation. These findings highlight a fundamental role for mTOR in epidermal morphogenesis that is regulated by distinct functions for mTORC1 and mTORC2.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Growth & Development > Biochemistry (Hall)
UniBasel Contributors:Hall, Michael N. and Rüegg, Markus A.
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
e-ISSN:2041-1723
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:08 Nov 2017 13:26
Deposited On:25 Oct 2017 14:57

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