Related Experiment Videos
Alginate oligosaccharides modulate cell morphology, cell proliferation and collagen expression in human skin
1Department of Dermatology, National Defense Medical College, Tokorozawa, Saitama, Japan.
Abstract:
Effects of alginate oligosaccharides on cell proliferation and expression of collagen in cultured skin fibroblasts were studied. The oligosaccharides were found to suppress fibroblast proliferation to half the level in control cultures at a dose of 10 mg/ml during a period of 5 days. The inhibition was accompanied by a change in cell shape. The inhibition of cell proliferation was reversible, since depletion of these oligosaccharides led to a recovery of cell motility. Treatment of confluent cells with 10 mg/ml oligosaccharides for 5 days resulted in a reduction in collagen synthesis to one half of that in control cultures and inhibition of steady state levels of alpha1(I), alpha2(I), alpha1(III) and alpha1(VI) collagen mRNAs. These results suggest that alginate oligosaccharides are potential modulators of dermal fibroblasts and may provide a useful tool for the treatment of disorders related to abnormal collagen metabolism.
Insights
Alginate oligosaccharides significantly reduce fibroblast proliferation and collagen production in skin cells. This effect is reversible, suggesting potential therapeutic applications for collagen-related disorders.
Area of Science:
- Biochemistry
- Dermatology
- Cell Biology
Background:
- Fibroblasts are crucial for skin structure and wound healing.
- Collagen synthesis by fibroblasts is vital for maintaining skin integrity.
- Dysregulation of fibroblast activity and collagen metabolism can lead to various skin disorders.
Purpose of the Study:
- To investigate the impact of alginate oligosaccharides on cultured skin fibroblast proliferation.
- To assess the effect of alginate oligosaccharides on collagen synthesis and gene expression in fibroblasts.
- To explore the potential therapeutic applications of alginate oligosaccharides in managing skin conditions.
Main Methods:
- Cultured human skin fibroblasts were treated with varying concentrations of alginate oligosaccharides.
- Cell proliferation was measured using standard cell counting techniques.
- Collagen synthesis was quantified via biochemical assays.
- Collagen mRNA levels were determined using quantitative real-time PCR.
Main Results:
- Alginate oligosaccharides suppressed fibroblast proliferation by 50% at 10 mg/ml over 5 days, altering cell morphology.
- The inhibition of proliferation was reversible upon removal of the oligosaccharides, with recovery of cell motility.
- Confluent cells treated with alginate oligosaccharides showed a 50% reduction in collagen synthesis.
- Steady-state levels of key collagen mRNAs (alpha1(I), alpha2(I), alpha1(III), alpha1(VI)) were significantly inhibited.
Conclusions:
- Alginate oligosaccharides act as modulators of dermal fibroblast behavior.
- These compounds demonstrate a capacity to inhibit both fibroblast proliferation and collagen production.
- Alginate oligosaccharides show promise as a therapeutic agent for conditions involving abnormal collagen metabolism.