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Biocompatible PEGDA Resin for 3D Printing
ACS Applied Bio Materials ( IF 4.6 ) Pub Date : 2020-02-27 00:00:00 , DOI: 10.1021/acsabm.0c00055
Chandler Warr 1 , Jonard Corpuz Valdoz 2 , Bryce P. Bickham 3 , Connor J. Knight 2 , Nicholas A. Franks 2 , Nicholas Chartrand 2 , Pam M. Van Ry 2 , Kenneth A. Christensen 2 , Gregory P. Nordin 3 , Alonzo D. Cook 1
Affiliation  

We report a noncytotoxic resin compatible with and designed for use in custom high-resolution 3D printers that follow the design approach described in Gong et al., Lab Chip 17, 2899 (2017). The noncytotoxic resin is based on a poly(ethylene glycol) diacrylate (PEGDA) monomer with avobenzone as the UV absorber instead of 2-nitrophenyl phenyl sulfide (NPS). Both NPS-PEGDA and avobenzone-PEGDA (A-PEGDA) resins were evaluated for cytotoxicity and cell adhesion. We show that NPS-PEGDA can be made effectively noncytotoxic with a postprint 12 h ethanol wash, and that A-PEGDA, as-printed, is effectively noncytotoxic. 3D prints made with either resin do not support strong cell adhesion in their as-printed state; however, cell adhesion increases dramatically with a short plasma treatment. Using A-PEGDA, we demonstrate spheroid formation in ultralow adhesion 3D printed wells, and cell migration from spheroids on plasma-treated adherent surfaces. Given that A-PEGDA can be 3D printed with high resolution, it has significant promise for a wide variety of cell-based applications using 3D printed microfluidic structures.

中文翻译:

用于3D打印的生物相容性PEGDA树脂

我们报道了一种非细胞毒性树脂,该树脂与定制的高分辨率3D打印机兼容并设计用于定制的3D打印机,该打印机遵循Gong等人在Lab Chip 17,2899(2017)中描述的设计方法。这种无细胞毒性的树脂是基于聚(乙二醇)二丙烯酸酯(PEGDA)单体,其中具有阿伏苯宗作为UV吸收剂,而不是2-硝基苯基苯硫醚(NPS)。NPS-PEGDA和阿伏苯宗-PEGDA(A-PEGDA)树脂均进行了细胞毒性和细胞粘附评估。我们显示,NPS-PEGDA可以用印后的12小时乙醇洗涤有效地制成无细胞毒性的,而A-PEGDA如所印刷的则是有效的无细胞毒性的。用两种树脂制成的3D打印件在其打印状态下均不支持强烈的细胞粘附;然而,短时间的血浆处理可以大大增加细胞的粘附力。使用A-PEGDA,我们展示了超低粘附力3D打印孔中的球状体形成,以及从等离子处理过的粘附表面上的球状体中迁移出来的细胞。鉴于A-PEGDA可以高分辨率进行3D打印,它对于使用3D打印微流体结构的各种基于细胞的应用具有巨大的希望。
更新日期:2020-02-27
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