Roles of aquaporin-3 in the epidermis

Mariko Chikuma, A. S. Verkman

Research output: Contribution to journalReview article

116 Citations (Scopus)

Abstract

Aquaporin-3 (AQP3) is a membrane transporter of water and glycerol expressed in plasma membranes in the basal layer keratinocytes of epidermis in normal skin. AQP3 expression in human skin is increased in response to skin stress in diseases such as atopic eczema, to various agents such as retinoic acid, and in skin carcinomas. AQP3-knockout mice have reduced stratum corneum water content and elasticity compared with wild-type mice, as well as impaired wound healing and epidermal biosynthesis. Reduced AQP3-dependent glycerol transport in AQP3-deficient epidermis appears to be responsible for these phenotype findings, as evidenced by reduced glycerol content in epidermis and stratum corneum in AQP3-knockout mice, and correction of the phenotype abnormalities by glycerol replacement. Recent data implicate AQP3 as an important determinant in epidermal proliferation and skin tumorigenesis, in which AQP3-knockout mice are resistant to tumor formation by a mechanism that may involve reduced cell glycerol content and ATP energy for biosynthesis. AQP3 is thus a key player in epidermal biology and a potential target for drug development.

Original languageEnglish
Pages (from-to)2145-2151
Number of pages7
JournalJournal of Investigative Dermatology
Volume128
Issue number9
DOIs
Publication statusPublished - 2008 Sep
Externally publishedYes

Fingerprint

Aquaporin 3
Epidermis
Glycerol
Skin
Knockout Mice
Biosynthesis
Cornea
Phenotype
Membrane Transport Proteins
Water
Elasticity
Atopic Dermatitis
Cell membranes
Tretinoin
Keratinocytes
Wound Healing
Water content
Tumors
Carcinogenesis
Adenosine Triphosphate

ASJC Scopus subject areas

  • Dermatology

Cite this

Roles of aquaporin-3 in the epidermis. / Chikuma, Mariko; Verkman, A. S.

In: Journal of Investigative Dermatology, Vol. 128, No. 9, 09.2008, p. 2145-2151.

Research output: Contribution to journalReview article

Chikuma, Mariko ; Verkman, A. S. / Roles of aquaporin-3 in the epidermis. In: Journal of Investigative Dermatology. 2008 ; Vol. 128, No. 9. pp. 2145-2151.
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