Cited by 103Vitamin D Research StudiesPsoriasis: Treatment and PathogenesisDermatology and Skin Diseases

20,23‐dihydroxyvitamin D3, novel P450scc product, stimulates differentiation and inhibits proliferation and NF‐κB activity in human keratinocytes

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Janjetovic, Zorica, Tuckey, Robert C., Nguyen, Minh N., Thorpe, Edwin M., Slominski, Andrzej T.·2010·Journal of Cellular Physiology

Abstract

We have examined effects of the 20,23‐dihydroxyvitamin D3 (20,23(OH)2D3), on differentiation and proliferation of human keratinocytes and the anti‐inflammatory potential of 20,23(OH)2D3 from its action on nuclear factor‐κB (NF‐κB). 20,23(OH)2D3 inhibited growth of keratinocytes with a potency comparable to that for 1,25‐dihydroxyvitamin D3 (1,25(OH)2D3). Cell cycle analysis showed that this inhibition was associated with G1/G0 and G2/M arrests. 20,23(OH)2D3 stimulated production of involucrin mRNA and inhibited production of cytokeratin 14 mRNA in a manner similar to that seen for 1,25(OH)2D3. Flow cytometry showed that these effects were accompanied by increased involucrin protein expression, and an increase in the cell size and granularity. Silencing of the vitamin D receptor (VDR) by corresponding siRNA abolished the stimulatory effect on involucrin gene expression demonstrating an involvement of VDR in 20,23(OH)2D3 action. This mode of action was further substantiated by stimulation of CYP24 gene expression and stimulation of the CYP24 promoter‐driven reporter gene activity. 20,23(OH)2D3 displayed several fold lower potency for induction of CYP24 gene expression than 1,25(OH)2D3. Finally, 20,23(OH)2D3 inhibited the transcriptional activity of NF‐κB in keratinocytes as demonstrated by EMSA, NF‐κB‐driven reporter gene activity assays and measurements of translocation of p65 from the cytoplasm to the nucleus. These inhibitory effects were connected with stimulation of the expression of IκBα with subsequent sequestration of NF‐κB in the cytoplasm and consequent attenuation of transcriptional activity. In summary, we have characterized 20,23(OH)2D3 as a novel secosteroidal regulator of keratinocytes proliferation and differentiation and a modifier of their immune activity. J. Cell. Physiol. 223: 36–48, 2010. © 2009 Wiley‐Liss, Inc.

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  1. Feldman D Pike JW Glorieux FH 2005 Vitamin D Oxford, UK Elsevier Academic Press 1952

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Authors
Janjetovic, Z., Tuckey, R. C., Nguyen, M. N., Thorpe, E. M., & Slominski, A. T.
Affiliations
  • The University of Western Australia (AU)
  • University of Tennessee Health Science Center (US)
Corresponding author
Slominski, Andrzej T.
Venue
Journal of Cellular Physiology
Publisher
Wiley
Published
2009-12-17
Volume
223
Issue
1
Pages
36-48
ISSN
  • 0021-9541 (ISSN-L)
  • 1097-4652
OpenAlex
W2122456263
Cited by
103
References
49
Citations by year
2025: 4 · 2024: 3 · 2023: 3 · 2022: 7 · 2021: 9 · 2020: 14 · 2019: 1 · 2018: 4 · 2017: 5 · 2016: 9 · 2015: 9 · 2014: 7 · 2013: 8 · 2012: 9
FWCI
4.70
Type
journal article
Language
en
Open access
Locations
  • Journal of Cellular Physiology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
Funders
National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR052190)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Vitamin D Research Studies
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
Keywords
secosteroids, keratinocyte differentiation, keratinocyte proliferation, NF-κB, vitamin D receptor, involucrin, keratin 14, CYP24, cell cycle arrest, IκBα, anti-inflammatory activity, 1,25-dihydroxyvitamin D3
MeSH terms
NF-KappaB Inhibitor alpha, Anti-Inflammatory Agents, Biotransformation, Calcitriol, Cell Cycle, Cell Differentiation, Cells, Cultured, Cholesterol Side-Chain Cleavage Enzyme, Dihydroxycholecalciferols, Dose-Response Relationship, Drug, Enzyme Induction, Humans, Promoter Regions, Genetic, Protein Precursors, RNA, Messenger, Steroid Hydroxylases, Time Factors, Transcription, Genetic, Transfection, 25-Hydroxyvitamin D3 1-alpha-Hydroxylase, Keratinocytes, NF-kappa B, Receptors, Calcitriol, I-kappa B Proteins, RNA Interference, Cell Proliferation, Transcription Factor RelA, Cholestanetriol 26-Monooxygenase, Keratin-14, Vitamin D3 24-Hydroxylase

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