Viability Improvement of Three‐Dimensional Human Skin Substitutes by Photobiomodulation during Cultivation

Viability Improvement of Three‐Dimensional Human Skin Substitutes by Photobiomodulation during Cultivation
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通过培养过程中的光生物调节提高三维人体皮肤替代品的活力

DOI:
10.1111/php.13642
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发表时间:
2022
影响因子:
3.3
通讯作者:
Sato Shunichi
Sato Shunichi
中科院分区:
生物学3区
文献类型:
--
作者:
Tsunoi Yasuyuki;Miyazaki Hiromi;Kawauchi Satoko;Akagi Takami;Akashi Mitsuru;Saitoh Daizoh;Sato Shunichi

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含有血管网络的三维(3D)培养皮肤是一种有用的皮肤替代品,可以在移植后快速再灌注。然而,在其培养过程中,从周围培养基向厚的培养组织输送的营养不足降低了组织活力。为了解决这个问题,在这项研究中,我们将光生物调节(PBM)应用于使用逐层细胞涂布技术构建的人类3D皮肤培养物中,PBM可以光学激活线粒体的电子传递链。在表皮分化开始后5天,使用中心波长为440、523、658或823 nm的发光二极管阵列,在15 mW cm-2的恒定光强度下施用PBM一次,持续50或600 s。PBM后两天,我们通过水溶性四唑-8测定、三磷酸腺苷测量和活/死细胞成像评估了组织的活力,结果表明,823 nm处的PBM持续50 s(0.75 J cm − 2)显著改善了3D培养皮肤的活力。
Three‐dimensional (3D) cultured skin containing vascular networks is a useful skin substitute that enables rapid reperfusion after transplantation. During its cultivation, however, insufficient nutrient delivery to the thick cultured tissue from the surrounding culture medium decreases the tissue viability. To solve this problem, in this study, we applied photobiomodulation (PBM), which can optically activate the electron transport chain of mitochondria, to human 3D skin cultures constructed using the layer‐by‐layer cell coating technique. PBM was applied once 5 days after the start of epidermal differentiation using a light‐emitting diode array with a center wavelength of 440, 523, 658 or 823 nm at a constant light intensity of 15 mW cm−2for 50 or 600 s. Two days after PBM, we assessed the viability of the tissues by a water‐soluble tetrazolium‐8 assay, adenosine triphosphate measurements and live/dead cell imaging, and the results showed that the PBM at 823 nm for 50 s (0.75 J cm−2) significantly improved the viability of the 3D‐cultured skin.
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影响因子: 8.1
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