Cited by 72Skin Protection and AgingPhytoestrogen effects and researchBioactive natural compounds

Biochemical investigation and gene analysis of equol: A plant and soy‐derived isoflavonoid with antiaging and antioxidant properties with potential human skin applications

Gopaul, Remona, Knaggs, Helen E., Lephart, Edwin D.·2012·BioFactors

Abstract

The purpose of this study was to investigate the effects of equol, a plant and intestinal flora derived isoflavonoid molecule on the expression of skin genes and proteins using human dermal models. As equol has been shown to mimic 17β-estradiol and bind specifically to 5α-dihydrotestostone (5α-DHT), these agents were used (in addition to equol) to determine whether equol may play important and beneficial roles in the extracellular matrix (ECM). Equol at 0.3 or 1.2% in qPCR experiments using a human skin barrier model examined ECM gene expression. Equol, 5α-DHT, and 17β-estradiol at 10 nM were studied in human monolayer fibroblasts cultures (hMFC) for ECM protein expression. Human fibroblast three-dimensional organotypic cultures revealed equol's influence (@ 10 nM) on ECM proteins via fluorescent-activated cell sorting (FACS) analysis. In qPCR experiments, equol significantly increased collagen, elastin (ELN), and tissue inhibitor of metalloprotease and decreased metalloproteinases (MMPs) gene expression and caused significant positive changes in skin antioxidant and antiaging genes. In hMFC, equol significantly increased collagen type I (COL1A1), whereas, 5α-DHT significantly decreased cell viability that was blocked by equol. FACS analysis showed equol and 17β-estradiol significantly stimulated COL1A1, collagen type III (COL3A1), and ELN while MMPs were significantly decreased compared with control values. Finally, tamoxifen blocked the positive influences of equol on ECM proteins via FACS analysis. These findings suggest that equol has the potential to be used topically for the treatment and prevention of skin aging, by enhancing ECM components in human skin.

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Crossref · 10.1002/biof.191

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References 34 · Cited by 72

Authors
Gopaul, R., Knaggs, H. E., & Lephart, E. D.
Affiliations
  • Nu Skin (United States) (US)
  • Brigham Young University (US)
Corresponding author
Gopaul, Remona
Venue
BioFactors
Publisher
Wiley
Published
2012-01
Volume
38
Issue
1
Pages
44-52
ISSN
  • 0951-6433 (ISSN-L)
  • 1872-8081
OpenAlex
W2077687626
Cited by
72
References
34
Citations by year
2026: 4 · 2025: 3 · 2024: 2 · 2023: 5 · 2022: 7 · 2021: 4 · 2020: 6 · 2019: 5 · 2018: 9 · 2017: 6 · 2016: 5 · 2015: 4 · 2014: 6 · 2013: 6
FWCI
6.41
Type
journal article
Language
en
Open access
closed
Locations
  • BioFactors (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Phytoestrogen effects and research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioactive natural compounds
Keywords
equol, isoflavonoids, skin aging, extracellular matrix, collagen, elastin, matrix metalloproteinases, tissue inhibitors of metalloproteinases, estradiol, dihydrotestosterone, tamoxifen, human dermal fibroblasts, skin barrier, antioxidant genes, topical skin care, gut microbiota
MeSH terms
Antioxidants, Cell Survival, Cells, Cultured, Estradiol, Fibroblasts, Humans, Receptors, Estrogen, Glycine max, Dihydrotestosterone, Transcription, Genetic, Skin Aging, Extracellular Matrix Proteins, Gene Expression Profiling, Collagen Type I, Tissue Culture Techniques, Cell Proliferation, Equol

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