皮上芯片无泵微流控装置的设计与评估。

Design and evaluation of a skin-on-a-chip pumpless microfluidic device.

机构信息

Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Department of Chemistry, Michigan State University, East Lansing, MI, USA.

出版信息

Sci Rep. 2023 May 31;13(1):8861. doi: 10.1038/s41598-023-34796-3.

Abstract

The development of microfluidic culture technology facilitates the progress of study of cell and tissue biology. This technology expands the understanding of pathological and physiological changes. A skin chip, as in vitro model, consisting of normal skin tissue with epidermis and dermis layer (full thickness) was developed. Polydimethylsiloxane microchannels with a fed-batched controlled perfusion feeding system were used to create a full-thick ex-vivo human skin on-chip model. The design of a novel skin-on-a-chip model was reported, in which the microchannel structures mimic the architecture of the realistic vascular network as nutrients transporter to the skin layers. Viabilities of full-thick skin samples cultured on the microbioreactor and traditional tissue culture plate revealed that a precise controlled condition provided by the microfluidic enhanced tissue viability at least for seven days. Several advantages in skin sample features under micro-scale-controlled conditions were found such as skin mechanical strength, water adsorption, skin morphology, gene expression, and biopsy longevity. This model can provide an in vitro environment for localizing drug delivery and transdermal drug diffusion studies. The skin on the chip can be a valuable in vitro model for representing the interaction between drugs and skin tissue and a realistic platform for evaluating skin reaction to pharmaceutical materials and cosmetic products.

摘要

微流控培养技术的发展促进了细胞和组织生物学研究的进展。该技术扩展了对病理和生理变化的理解。开发了一种皮肤芯片,作为体外模型,由具有表皮和真皮层(全厚度)的正常皮肤组织组成。使用具有 fed-batched 控制灌注进料系统的聚二甲基硅氧烷微通道来创建全厚度离体人皮肤芯片模型。报道了一种新型的皮肤芯片模型的设计,其中微通道结构模拟真实血管网络的结构,作为营养物质向皮肤层的输送者。在微生物反应器和传统组织培养板上培养的全厚度皮肤样本的活力表明,微流控提供的精确控制条件至少可使组织活力维持七天。在微尺度控制条件下,皮肤样本的特征具有多种优势,例如皮肤机械强度、水分吸附、皮肤形态、基因表达和活检寿命。该模型可提供用于定位药物输送和透皮药物扩散研究的体外环境。该芯片上的皮肤可以成为代表药物与皮肤组织相互作用的有价值的体外模型,以及评估药物材料和化妆品产品对皮肤反应的真实平台。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c02/10232512/996a6ced2888/41598_2023_34796_Fig1_HTML.jpg

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