Cited by 46Protein Kinase Regulation and GTPase SignalingHair Growth and DisordersSkin and Cellular Biology Research

Ras signaling is essential for skin development

Drosten, M, Lechuga, C G, Barbacid, M·2014·Oncogene

Abstract

Proliferation in the epidermis is a tightly controlled process. During skin development, epidermis formation and hair follicle morphogenesis crucially depend on the regulated balance between proliferation and differentiation. Here we deleted all three Ras loci (H-Ras, N-Ras and K-Ras) from keratinocytes in vitro as well as specifically from the epidermis in mice using a K5Cre strain. Upon Ras elimination, keratinocytes ceased proliferation and entered into senescence without any signs of apoptosis induction. Constitutive activation of the mitogen-activated protein kinase pathway was able to partially rescue the proliferative defects. In mice, Ras signaling was essential for proper development of the epidermis and hair follicles. Deletion of the three Ras loci during epidermis formation in mouse embryos caused a dramatic decrease in proliferation, resulting in a substantially thinner epidermis and delayed appearance of differentiation markers. We could not detect apoptotic or senescent cells in these embryos suggesting that loss of Ras protein expression only leads to severe hypoproliferation. These observations provide genetic evidence for an essential role of Ras proteins in the control of keratinocyte and epidermal proliferation.

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Crossref · 10.1038/onc.2013.254

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Authors
Drosten, M., Lechuga, C. G., & Barbacid, M.
Affiliations
Spanish National Cancer Research Centre (ES)
Corresponding author
  • Drosten, M
  • Barbacid, M
Venue
Oncogene
Published
2013-07-08
Volume
33
Issue
22
Pages
2857-2865
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W1994992191
Cited by
46
References
53
Citations by year
2026: 3 · 2025: 4 · 2024: 5 · 2023: 5 · 2022: 5 · 2021: 8 · 2020: 1 · 2019: 4 · 2018: 3 · 2017: 3 · 2015: 2 · 2014: 2 · 2013: 1
FWCI
0.75
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Health Sciences › Medicine › Urology › Hair Growth and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Skin and Cellular Biology Research
Keywords
Ras signaling, skin development, epidermal development, hair follicle morphogenesis, keratinocyte proliferation, keratinocyte differentiation, keratinocyte senescence, H-Ras, NRAS, KRAS, MAPK signaling
MeSH terms
Animals, Cell Differentiation, Epidermis, Skin, Signal Transduction, Keratinocytes, Cellular Senescence, Mice, Knockout, ras Proteins, Hair Follicle, Mitogen-Activated Protein Kinases, Extracellular Signal-Regulated MAP Kinases, Cell Proliferation, Mice

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