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Updated: Sep 1, 2025
Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
Published on: September 7, 2013
Explore the multitarget mechanism of tetrahydrocurcumin preventing on UV-induced photoaging mouse skin
Chuan Xu1, Qian-Wei Xiong2, Yue Li3
1Department of Oncology, The General Hospital of Western Theater Command, Chengdu, China.
Abstract:
UV induced photoaging is the main external factor of skin aging. In this study, we tested the protective effects of tetrahydrocurcumin on UV-induced skin photoaging of KM mice and researched the multi-target mechanism through RNA sequencing technology. Mouse experiments show that tetrahydrocurcumin strongly changed in skin appearance, epidermal thickness, and wrinkle-related parameters in UV-irradiated mice. RNA-seq result show that we found 29 differentially expressed mRNA transcripts in UV mice relative to Ctrl rats (18 up-regulated and 11 down-regulated) and 7 significantly dysregulated mRNAs were obtained in the THC group compared to the UV group (1 up-regulated and 6 down-regulated), respectively. Spink7, Edn3, Stab2 may be the key target genes of tetrahydrocurcumin in preventing aging. Bioinformatics analysis shows that the response to muscle contraction and melanin biosynthetic GO term and Inflammation related pathway such as PPAR, MAPK would involve in effects of tetrahydrocurcumin. The results of this study indicated that tetrahydrocurcumin can improve the appearance through anti-inflammatory, improving extracellular matrix and inhibiting melanin production. It could be suggested as a protective measure in the prevention of UV-induced photoaging.
Insights
Tetrahydrocurcumin (THC) effectively combats UV-induced skin aging in mice by improving skin appearance and reducing wrinkles. This study reveals THC
Area of Science:
- Dermatology
- Biochemistry
- Molecular Biology
Background:
- Ultraviolet (UV) radiation is a primary external factor driving skin aging (photoaging).
- Understanding the molecular mechanisms of photoaging is crucial for developing effective interventions.
- Tetrahydrocurcumin (THC) is a derivative of curcumin with potential therapeutic properties.
Purpose of the Study:
- To evaluate the protective effects of tetrahydrocurcumin against UV-induced skin photoaging in mice.
- To elucidate the multi-target molecular mechanisms of THC in preventing photoaging using RNA sequencing.
Main Methods:
- UV irradiation was applied to KM mice to induce photoaging.
- Skin appearance, epidermal thickness, and wrinkle parameters were assessed.
- RNA sequencing (RNA-seq) was employed to identify differentially expressed genes.
- Bioinformatics analysis was performed to explore involved pathways and gene ontology terms.
Main Results:
- THC significantly improved skin appearance, reduced epidermal thickness, and ameliorated wrinkle formation in UV-exposed mice.
- RNA-seq identified key differentially expressed genes, including Spink7, Edn3, and Stab2, potentially targeted by THC.
- Bioinformatics analysis indicated that THC influences muscle contraction, melanin biosynthesis, and inflammation-related pathways (e.g., PPAR, MAPK).
Conclusions:
- Tetrahydrocurcumin demonstrates significant protective effects against UV-induced skin photoaging.
- THC acts through anti-inflammatory mechanisms, extracellular matrix improvement, and inhibition of melanin production.
- THC shows promise as a preventative measure against UV-induced photoaging.
