Origami-Paper-Based Device for Microvesicle/Exosome

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Origami-Paper-Based Device for Microvesicle/Exosome Electronic Supplementary Material (ESI) for Lab on a Chip. This journal is © The Royal Society of Chemistry 2019 Supplementary Information Origami-paper-based device for microvesicle/exosome preconcentration and isolation Hyerin Kim,a‡ Kyu Hyoung Lee,b‡, Sung Il Han,a Dongho Lee,c Seok Chung,*d Dohwan Lee*e and Jeong Hoon Lee*a aDepartment of Electrical Engineering, Kwangwoon University, Seoul 01897, Republic of Korea bDepartment of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea cCALTH. Inc. Changeop-ro 54, Seongnam, Gyeonggi 13449, Republic of Korea dSchool of Mechanical Engineering, College of Engineering, Korea University, Seoul, 02841, Republic of Korea eSchool of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, USA ‡H.K. and K.H.L. contributed equally. *Corresponding author: a) [email protected], d) [email protected], e) [email protected] Quantification of the enriched microvesicles/exosomes using NTA. The concentration of microvesicles/exosomes as in Fig. 3b was quantified with nanoparticle tracking analysis (NTA). To do this, first, layer 6, 8 and 10 were biopsy-punched according to the each size of sample areas. Each punched-layer was immersed in buffer solution (0.1X PBS with 0.01% Tween 20) and then we applied 10 min vortexing and centrifugation for resuspension of the preconcentrated microvesicles/exosomes. After taking out the punched-layer from the resuspended solution, the concentration of microvesicles/exosomes were measured by NTA machine. *Information for the NTA machine: Nanoparticle tracking analysis (NTA, NanoSight LM10, NanoSight Technology, UK) NTA version : 3.3 Dev Build 3.3.104 software (Malvern) Camera type : CCD camera Camera level: 12 FPS : 30 FPS Temperature: 24°C Viscosity: (water) 0.9 cP Fig. S1. Preconcentration of microvesicle/exosome with different pore size papers. Regardless of pore sizes, microvesicles/exosomes were preconcentrated on layer 8 and 9 in 20 min, but more microvesicles/exosomes were stuck to the first layer of the smaller paper matrix..
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