新型葡萄糖响应型透明纳米纤维水凝胶贴片通过静电纺丝用作可穿戴生物传感器。
Novel glucose-responsive of the transparent nanofiber hydrogel patches as a wearable biosensor via electrospinning.
机构信息
Department of Fiber-System Engineering, Dankook University, 152, Jookjeon-ro, Suji-gu, Yongin-si, Gyeonggi-do, 448-701, Republic of Korea.
出版信息
Sci Rep. 2020 Nov 2;10(1):18858. doi: 10.1038/s41598-020-75906-9.
Micro- and nanofiber (NF) hydrogels fabricated by electrospinning to typically exhibit outstanding high porosity and specific surface area under hydrated conditions. However, the high crystallinity of NFs limits the achievement of transparency via electrospinning. Transparent poly(vinyl alcohol)/β-cyclodextrin polymer NF hydrogels contacted with reverse iontophoresis electrodes were prepared for the development of a non-invasive continuous monitoring biosensor platform of interstitial fluid glucose levels reaching ~ 1 mM. We designed the PVA/BTCA/β-CD/GOx/AuNPs NF hydrogels, which exhibit flexibility, biocompatibility, excellent absorptivity (DI water: 21.9 ± 1.9, PBS: 41.91 ± 3.4), good mechanical properties (dried: 12.1 MPa, wetted: 5.33 MPa), and high enzyme activity of 76.3%. Owing to the unique features of PVA/β-CD/GOx containing AuNPs NF hydrogels, such as high permeability to bio-substrates and rapid electron transfer, our biosensors demonstrate excellent sensing performance with a wide linear range, high sensitivity(47.2 μA mM), low sensing limit (0.01 mM), and rapid response time (< 15 s). The results indicate that the PVA/BTCA/β-CD/GOx/AuNPs NF hydrogel patch sensor can measure the glucose concentration in human serum and holds massive potential for future clinical applications.
通过静电纺丝制造的微/纳米纤维 (NF) 水凝胶通常在水合条件下表现出出色的高孔隙率和比表面积。然而,NF 的高结晶度限制了通过静电纺丝实现透明度。为了开发一种非侵入式连续监测间质液葡萄糖水平的生物传感器平台,达到~1mM,我们制备了与反向离子电渗电极接触的透明聚乙烯醇/β-环糊精聚合物 NF 水凝胶。我们设计了 PVA/BTCA/β-CD/GOx/AuNPs NF 水凝胶,其具有柔韧性、生物相容性、优异的吸水性(DI 水:21.9±1.9,PBS:41.91±3.4)、良好的机械性能(干燥:12.1MPa,湿润:5.33MPa)和高酶活性 76.3%。由于 PVA/β-CD/GOx 含有 AuNPs NF 水凝胶的独特特性,例如对生物底物的高渗透性和快速电子转移,我们的生物传感器具有出色的传感性能,具有较宽的线性范围、高灵敏度(47.2μA mM)、低检测限(0.01mM)和快速响应时间(<15s)。结果表明,PVA/BTCA/β-CD/GOx/AuNPs NF 水凝胶贴片传感器可以测量人血清中的葡萄糖浓度,具有巨大的临床应用潜力。