Cited by 339Hair Growth and DisordersWnt/β-catenin signaling in development and cancerHedgehog Signaling Pathway Studies

Transient activation of β-catenin signalling in adult mouse epidermis is sufficient to induce new hair follicles but continuous activation is required to maintain hair follicle tumours

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Celso, Cristina Lo, Prowse, David M., Watt, Fiona M.·2004·Development

Abstract

When β-catenin signalling is disturbed from mid-gestation onwards lineage commitment is profoundly altered in postnatal mouse epidermis. We have investigated whether adult epidermis has the capacity forβ-catenin-induced lineage conversion without prior embryonic priming. We fused N-terminally truncated, stabilised β-catenin to the ligand-binding domain of a mutant oestrogen receptor (ΔNβ-cateninER).ΔNβ-cateninER was expressed in the epidermis of transgenic mice under the control of the keratin 14 promoter and β-catenin activity was induced in adult epidermis by topical application of 4-hydroxytamoxifen(4OHT). Within 7 days of daily 4OHT treatment resting hair follicles were recruited into the hair growth cycle and epithelial outgrowths formed from existing hair follicles and from interfollicular epidermis. The outgrowths expressed Sonic hedgehog, Patched and markers of hair follicle differentiation, indicative of de novo follicle formation. The interfollicular epidermal differentiation program was largely unaffected but after an initial wave of sebaceous gland duplication sebocyte differentiation was inhibited. A single application of 4OHT was as effective as repeated doses in inducing new follicles and growth of existing follicles. Treatment of epidermis with 4OHT for 21 days resulted in conversion of hair follicles to benign tumours resembling trichofolliculomas. The tumours were dependent on continuous activation of β-catenin and by 28 days after removal of the drug they had largely regressed. We conclude that interfollicular epidermis and sebaceous glands retain the ability to be reprogrammed in adult life and that continuousβ-catenin signalling is required to maintain hair follicle tumours.

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  • TERT interacts with Brg-1, which binds β-catenin, and is recruited to Wnt target gene chromatin to enhance Wnt transcriptional output.

    “TERT interacts with the chromatin remodeling protein Brg-1, which binds b-catenin, the central transactivator in the Wnt pathway.TERT is recruited to Wnt target gene chromatin in cells stimulated by Wnts and serves to enhance the transcriptional output of the Wnt program in this context (148,149).”

    From Telomeres and telomerase in cancer (2010) · cites this paper as [149]

  • TERT acts as a developmental regulator and modulates the Wnt signaling pathway.

    “These observations indicated that TERT possesses properties of a developmental regulator and indeed TERT exerts these potent developmental effects as a modulator in the Wnt signaling pathway (149).”

    From Telomeres and telomerase in cancer (2010) · cites this paper as [149]

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  1. Swift, S., Lorens, J., Achacosa, P. and Nolan, G. P. (1999). In Current Protocols in Immunology, vol. 1 (ed. J. E. Coligan, A. M. Kruisbeek, D. H. Marguilies, E. M. Shevach and W. Strober), pp. 17C, 1-17. New York: Wiley.

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Authors
Celso, C. L., Prowse, D. M., & Watt, F. M.
Affiliations
Cancer Research UK (GB)
Corresponding author
Watt, Fiona M.
Venue
Development
Published
2004-04-15
Volume
131
Issue
8
Pages
1787-1799
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W1980344438
Cited by
339
References
80
Citations by year
2026: 2 · 2025: 5 · 2024: 7 · 2023: 7 · 2022: 11 · 2021: 7 · 2020: 12 · 2019: 10 · 2018: 11 · 2017: 24 · 2016: 7 · 2015: 10 · 2014: 19 · 2013: 20 · 2012: 25
FWCI
19.86
Type
journal article
Language
en
Open access
Locations
  • Development (publishedVersion)
  • PubMed (publishedVersion)
  • University of Hertfordshire Research Archive (University of Hertfordshire) (submittedVersion)
Funders
Cancer Research UK
Topics
  • Health Sciences › Medicine › Urology › Hair Growth and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Hedgehog Signaling Pathway Studies
Keywords
β-catenin signaling, hair follicle regeneration, epidermis, lineage conversion, trichofolliculoma, hair follicle tumor, sebaceous glands, Sonic hedgehog, Patched, 4-hydroxytamoxifen, keratin 14 promoter, tumor regression
MeSH terms
Animals, Cytoskeletal Proteins, Epidermis, Mice, Transgenic, Promoter Regions, Genetic, Skin Neoplasms, Time Factors, Signal Transduction, Trans-Activators, Hair Follicle, beta Catenin, Mice

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