Development of a novel hydrogel for in situ Laser-Assisted Bioprinting to promote bone regeneration

开发用于原位激光辅助生物打印的新型水凝胶以促进骨再生

• 批准号: 22F32101
• 负责人: 田畑 泰彦
• 金额: $ 0.77万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-07-27 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22F32101/
• 关键词: tissue engineering; bone regeneration; bioactive glass; coculture; vascularization; osteogenesis; bioprinting; biofabrication

Gelatin (Gel5wt%)-sheets incorporating bioactive glasses (BG0wt%, 1wt%, 3wt% or 5wt%) were fabricated and underwent a dehydrothermal crosslinking (CL120°C, CL140°C or CL160°C 24h). The condition “Gel5wt% BG1wt% CL160°C” allowed to obtain the best results in terms of physical (porosity, pore size, swelling ratio), mechanical (Young modulus) and biological (viability, proliferation, ALP activity, calcium deposition) properties, in monoculture and coculture models. After immersion into simulated body fluid, Ca/P molar ratios measured using EDX analysis were between 1.72 and 1.77, suggesting a good bioactivity of the biomaterial. In coculture, this formulation supported the formation of microvascular networks. Finally, this novel biopaper was successfully used as a receiving substrate for Laser-Assisted Bioprinting technology, but also adapted to 3D-moulding and stacking approaches to generate 3D constructs.

制备掺入生物活性玻璃（BG 0重量%、1重量%、3重量%或5重量%）的明胶（Gel 5重量%）-片材，并进行去水热交联（CL 120 °C、CL 140 °C或CL 160 °C 24小时）。条件“凝胶5wt%BG 1wt%CL 160 °C”允许在单培养和共培养模型中获得物理（孔隙率、孔径、溶胀比）、机械（杨氏模量）和生物（活力、增殖、ALP活性、钙沉积）性质方面的最佳结果。浸泡在模拟体液中后，用EDX分析测量的Ca/P摩尔比在1.72和1.77之间，表明生物材料具有良好的生物活性。在共培养中，该制剂支持微血管网络的形成。最后，这种新型生物纸成功地用作激光辅助生物打印技术的接收基底，而且还适用于3D成型和堆叠方法以生成3D结构。

项目成果

In Vivo Application of Silica-Derived Inks for Bone Tissue Engineering: A 10-Year Systematic Review.

• DOI: 10.3390/bioengineering9080388
• 发表时间: 2022-08-15
• 期刊: Bioengineering (Basel, Switzerland)

FGF-2徐放性Bioactive glass配合gelatin spongeの生物学的評価

含FGF-2缓释生物活性玻璃明胶海绵的生物学评价

• 发表时间: 2022
• 作者: 鷲尾絢子;古株彰一郎;矢田直美;Olivia Kerouredan; 北村知昭;田畑泰彦
• 通讯作者: 田畑泰彦

Development of a novel biopaper to promote bone regeneration using in situ Laser-Assisted Bioprinting

使用原位激光辅助生物打印开发新型生物纸以促进骨再生

• 发表时间: 2023
• 作者: Zahringer Till J. B.;Moghtader Julian A.;Bertrams Maria‐Sophie;Roy Bibhisan;Uji Masanori;Yanai Nobuhiro;Kerzig Christoph;Olivia Kerouredan
• 通讯作者: Olivia Kerouredan