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首頁> 外文會議>Mechanisms of photobiomodulation therapy XI >Photobiomodulation of distinct lineages of human dermal fibroblasts: a rational approach towards the selection of effective light parameters for skin rejuvenation and wound healing
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Photobiomodulation of distinct lineages of human dermal fibroblasts: a rational approach towards the selection of effective light parameters for skin rejuvenation and wound healing

機譯:人類皮膚成纖維細胞不同譜系的光生物調(diào)節(jié):選擇有效的光參數(shù)進行皮膚修復和傷口愈合的合理方法

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Distinct lineages of human dermal fibroblasts play complementary roles in skin rejuvenation and wound healing, which makes them a target of phototherapy. However, knowledge about differential responses of specific cell lineages to different light parameters and moreover the actual molecular targets remain to be unravelled. The goal of this study was to investigate the impact of a range of parameters of light on the metabolic activity, collagen production, and cell migration of distinct lineages of human dermal fibroblasts. A rational approach was used to identify parameters with high therapeutic potential. Fibroblasts exhibited both inhibitory and cytotoxic change when exposed to a high dose of blue and cyan light in tissue culture medium containing photo-reactive species, but were stimulated by high dose red and near infrared light. Cytotoxic effects were eliminated by refreshing the medium after light exposure by removing potential ROS formed by extracellular photo-reactive species. Importantly, distinct lineages of fibroblasts demonstrated opposite responses to low dose blue light treatment when refreshing the medium after exposure. Low dose blue light treatment also significantly increased collagen production by papillary fibroblasts; high dose significantly retarded closure of the scratch wound without signs of cytotoxicity, and this is likely to have involved effects on both cell migration and proliferation. We recommend careful selection of fibroblast subpopulations and their culture conditions, a systematic approach in choosing and translating treatment parameters, and pursuit of fundamental research on identification of photoreceptors and triggered molecular pathways, while seeking effective parameters to address different stages of skin rejuvenation and wound healing.
機譯:人類皮膚成纖維細胞的不同譜系在皮膚再生和傷口愈合中起著互補的作用,這使其成為光療的靶標。然而,有關(guān)特定細胞譜系對不同光參數(shù)的差異反應以及實際分子靶點的知識尚待闡明。這項研究的目的是研究一系列光參數(shù)對人類皮膚成纖維細胞不同譜系的代謝活性,膠原蛋白生成和細胞遷移的影響。使用一種合理的方法來確定具有高治療潛力的參數(shù)。當成纖維細胞在含有光反應性物種的組織培養(yǎng)基中暴露于高劑量的藍色和青色光時,表現(xiàn)出抑制性和細胞毒性的變化,但受到高劑量的紅色和近紅外光的刺激。通過在暴露后通過去除細胞外光反應性物質(zhì)形成的潛在ROS來刷新培養(yǎng)基,消除了細胞毒性作用。重要的是,當暴露后刷新培養(yǎng)基時,不同的成纖維細胞譜系顯示出對低劑量藍光處理的相反反應。低劑量藍光治療還可以顯著增加乳頭狀成纖維細胞產(chǎn)生的膠原蛋白。高劑量顯著延遲了刮傷傷口的閉合,而沒有細胞毒性的跡象,這很可能對細胞遷移和增殖都有影響。我們建議仔細選擇成纖維細胞亞群及其培養(yǎng)條件,選擇和翻譯治療參數(shù)的系統(tǒng)方法,并進行基礎(chǔ)研究以鑒定感光細胞和觸發(fā)的分子途徑,同時尋求有效的參數(shù)來解決皮膚復興和傷口愈合的不同階段。

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