Anti-inflammatory and immunomodulatory effects of Aquaphilus dolomiae extract on in vitro models

被引:38
作者
Aries, Marie-Francoise [1 ]
Hernandez-Pigeon, Helene [1 ]
Vaissiere, Clemence [1 ]
Delga, Helene [1 ]
Caruana, Antony [1 ]
Leveque, Marguerite [1 ]
Bourrain, Muriel [1 ,2 ]
Helffer, Katia Ravard [1 ]
Chol, Bertrand [3 ]
Thien Nguyen [1 ]
Bessou-Touya, Sandrine [1 ]
Castex-Rizzi, Nathalie [1 ]
机构
[1] Pierre Fabre Dermocosmet, Ctr Rech & Dev Pierre Fabre, Toulouse, France
[2] UPMC Univ Paris 06, Sorbonne Univ, CNRS, Observ Oceanol,LBBM, Banyuls Sur Mer, France
[3] Pierre Fabre, Ctr Immunol, St Julien En Genevois, France
来源
CLINICAL COSMETIC AND INVESTIGATIONAL DERMATOLOGY | 2016年 / 9卷
关键词
atopic dermatitis; inflammation; anti-inflammation; in vitro and in vivo activities; barrier function; microorganism;
D O I
10.2147/CCID.S113180
中图分类号
R75 [皮肤病学与性病学];
学科分类号
100206 ;
摘要
Background: Atopic dermatitis (AD) is a common skin disease characterized by recurrent pruritic inflammatory skin lesions resulting from structural and immune defects of the skin barrier. Previous studies have shown the clinical efficacy of Avene thermal spring water in AD, and a new microorganism, Aquaphilus dolomiae was suspected to contribute to these unique properties. The present study evaluated the anti-inflammatory, antipruritic, and immunomodulatory properties of ES0, an original biological extract of A. dolomiae, in immune and inflammatory cell models in order to assess its potential use in the treatment of AD. Materials and methods: An ES0 extract containing periplasmic and membrane proteins, peptides, lipopolysaccharides, and exopolysaccharides was obtained from A. dolomiae. The effects of the extract on pruritus and inflammatory mediators and immune mechanisms were evaluated by using various AD cell models and assays. Results: In a keratinocyte model, ES0 inhibited the expression of the inflammatory mediators, thymic stromal lymphopoietin, interleukin (IL)-18, IL-4R, IL-8, monocyte chemoattractant protein-3, macrophage inflammatory protein-3a, and macrophage-derived chemokine and induced the expression of involucrin, which is involved in skin barrier keratinocyte terminal differentiation. In addition, ES0 inhibited protease-activated receptor-2 activation in HaCaT human keratinocytes stimulated by stratum corneum tryptic enzyme and T helper type (Th) 1, Th2, and Th17 cytokine production in Staphylococcal enterotoxin B-stimulated CD4+ lymphocytes. Lastly, ES0 markedly activated innate immunity through toll-like receptor (TLR) 2, TLR4, and TLR5 activation (in recombinant human embryonic kidney 293 cells) and through antimicrobial peptide induction (psoriasin, human beta-defensin-2, and cathelicidin), mainly through TLR5 activation (in normal human keratinocytes). Conclusion: Overall, these in vitro results confirm the marked regulatory activity of this A. dolomiae extract on inflammatory and immune responses, which may be of value by virtue of its potential as an adjunctive treatment of AD inflammatory and pruritic lesions.
引用
收藏
页码:421 / 434
页数:14
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