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Xiao Y, Zhou M, Zhang M, Liu W, Zhou Y, Lang M. Hepatocyte culture on 3D porous scaffolds of PCL/PMCL. Colloids Surf B Biointerfaces 2018; 173:185-193. [PMID: 30292931 DOI: 10.1016/j.colsurfb.2018.09.064] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 09/04/2018] [Accepted: 09/25/2018] [Indexed: 12/30/2022]
Abstract
The development of three-dimensional (3D) porous scaffolds for soft tissue engineering mainly focused on manipulation of scaffold properties with cell behaviors. By emulsion freeze-drying method, four types of porous scaffolds were prepared from amorphous poly(4-methy-ε-caprolactone) (PMCL) and semi-crystalline poly(ε-caprolactone) (PCL) at different weight ratios, named as PMCL0, PMCL30, PMCL50 and PMCL70, respectively. Visual observation on cross-sectional images of the scaffolds appeared as sponge-like materials with three-dimensional and highly porous morphologies. However, the pore size, porosity and wettability of blends were not decreased linearly with increasing amorphous PMCL. Distinguished from PMCL30 or PMCL70, PMCL50 preserved intact PCL crystals distributed in amorphous matrix, resulting in the lowest Young's modulus (E) and relatively high wettability. From in vitro cell culture, it was observed that PMCL50 scaffold supported human induced hepatocytes (hiHeps) proliferation and function preservation best among all scaffolds. hiHeps on PMCL50 inclined to adopt fibroblastic morphology, whereas formed spheroidal morphology on PMCL0. It was suggested that our bare scaffolds with tailored properties have shown remarkable capability towards hiHep proliferation and function expression.
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Affiliation(s)
- Yan Xiao
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Miaomiao Zhou
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Mi Zhang
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Wei Liu
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yan Zhou
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Meidong Lang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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Hong H, Park SJ, Han SJ, Lim J, Kim DS. Aquatic flower-inspired cell culture platform with simplified medium exchange process for facilitating cell-surface interaction studies. Biomed Microdevices 2016; 18:3. [PMID: 26683462 DOI: 10.1007/s10544-015-0026-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Establishing fundamentals for regulating cell behavior with engineered physical environments, such as topography and stiffness, requires a large number of cell culture experiments. However, cell culture experiments in cell-surface interaction studies are generally labor-intensive and time-consuming due to many experimental tasks, such as multiple fabrication processes in sample preparation and repetitive medium exchange in cell culture. In this work, a novel aquatic flower-inspired cell culture platform (AFIP) is presented. AFIP aims to facilitate the experiments on the cell-surface interaction studies, especially the medium exchange process. AFIP was devised to capture and dispense cell culture medium based on interactions between an elastic polymer substrate and a liquid medium. Thus, the medium exchange can be performed easily and without the need of other instruments, such as a vacuum suction and pipette. An appropriate design window of AFIP, based on scaling analysis, was identified to provide a criterion for achieving stability in medium exchange as well as various surface characteristics of the petal substrates. The developed AFIP, with physically engineered petal substrates, was also verified to exchange medium reliably and repeatedly. A closed structure capturing the medium was sustained stably during cell culture experiments. NIH3T3 proliferation results also demonstrated that AFIP can be applied to the cell-surface interaction studies as an alternative to the conventional method.
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Affiliation(s)
- Hyeonjun Hong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk, 790-784, South Korea
| | - Sung Jea Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk, 790-784, South Korea
| | - Seon Jin Han
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk, 790-784, South Korea
| | - Jiwon Lim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk, 790-784, South Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk, 790-784, South Korea.
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Li H, Whittenberg JJ, Zhou H, Ranganathan D, Desai AV, Koziol J, Zeng D, Kenis PJA, Reichert DE. Development of a microfluidic "click chip" incorporating an immobilized Cu(I) catalyst. RSC Adv 2015; 5:6142-6150. [PMID: 25598970 DOI: 10.1039/c4ra15507f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
We have developed a microfluidic "click chip" incorporating an immobilized Cu(I) catalyst for click reactions. The microfluidic device was fabricated from polydimethylsiloxane (PDMS) bonded to glass and featured ~14,400 posts on the surface to improve catalyst immobilization. This design increased the immobilization efficiency and reduces the reagents' diffusion time to active catalyst site. The device also incorporates five reservoirs to increase the reaction volume with minimal hydrodynamic pressure drop across the device. A novel water-soluble tris-(benzyltriazolylmethyl)amine (TBTA) derivative capable of stabilizing Cu(I), ligand 2, was synthesized and successfully immobilized on the chip surface. The catalyst immobilized chip surface was characterized by X-ray photoelectron spectroscopy (XPS). The immobilization efficiency was evaluated via radiotracer methods: the immobilized Cu(I) was measured as 1136±272 nmol and the surface immobilized Cu(I) density was 81±20 nmol cm-2. The active Cu(I)-ligand 2 could be regenerated up to five times without losing any catalyst efficiency. The "click" reaction of Flu568-azide and propargylamine was studied on chip for proof-of-principle. The on-chip reaction yields were ca. 82% with a 50 min reaction time or ca. 55% with a 15 min period at 37 °C, which was higher than those obtained in the conventional reaction. The on-chip "click" reaction involving a biomolecule, cyclo(RGDfK) peptide was also studied and demonstrated a conversion yield of ca. 98%. These encouraging results show promise on the application of the Cu(I) catalyst immobilized "click chip" for the development of biomolecule based imaging agents.
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Affiliation(s)
- Hairong Li
- Radiological Sciences Division, Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 South Kingshighway Blvd., St. Louis, MO 63110, USA
| | - Joseph J Whittenberg
- Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, IL 61801
| | - Haiying Zhou
- Radiological Sciences Division, Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 South Kingshighway Blvd., St. Louis, MO 63110, USA
| | - David Ranganathan
- Radiological Sciences Division, Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 South Kingshighway Blvd., St. Louis, MO 63110, USA
| | - Amit V Desai
- Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, IL 61801
| | - Jan Koziol
- Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, IL 61801
| | - Dexing Zeng
- Radiological Sciences Division, Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 South Kingshighway Blvd., St. Louis, MO 63110, USA
| | - Paul J A Kenis
- Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, IL 61801
| | - David E Reichert
- Radiological Sciences Division, Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 South Kingshighway Blvd., St. Louis, MO 63110, USA
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Kim K, Hyung C, Ingole PG, Kim J, Lee H. Preparation, characterization, and performance evaluation of coated PES polymer materials fabricated via dry/wet phase inversion technique. J Appl Polym Sci 2013. [DOI: 10.1002/app.39711] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- KeeHong Kim
- Korea Institute of Energy Research; 71-2 Jang-dong Yuseong-gu Daejeon Korea
- Department of Chemical and Biomolecular Engineering; Yonsei University; Korea
| | - ChanHeui Hyung
- Korea Institute of Energy Research; 71-2 Jang-dong Yuseong-gu Daejeon Korea
| | - Pravin G. Ingole
- Korea Institute of Energy Research; 71-2 Jang-dong Yuseong-gu Daejeon Korea
| | - JongHak Kim
- Department of Chemical and Biomolecular Engineering; Yonsei University; Korea
| | - HyungKeun Lee
- Korea Institute of Energy Research; 71-2 Jang-dong Yuseong-gu Daejeon Korea
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Schober A, Fernekorn U, Singh S, Schlingloff G, Gebinoga M, Hampl J, Williamson A. Mimicking the biological world: Methods for the 3D structuring of artificial cellular environments. Eng Life Sci 2013. [DOI: 10.1002/elsc.201200088] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Andreas Schober
- Department of Nanobiosystem Technology, Institute of Micro- and Nanotechnologies MacroNano®; Ilmenau University of Technology; Ilmenau Germany
- Institute of Chemistry and Biotechnology; Ilmenau University of Technology; Ilmenau Germany
| | - Uta Fernekorn
- Department of Nanobiosystem Technology, Institute of Micro- and Nanotechnologies MacroNano®; Ilmenau University of Technology; Ilmenau Germany
- Institute of Chemistry and Biotechnology; Ilmenau University of Technology; Ilmenau Germany
| | - Sukhdeep Singh
- Department of Nanobiosystem Technology, Institute of Micro- and Nanotechnologies MacroNano®; Ilmenau University of Technology; Ilmenau Germany
- Institute of Chemistry and Biotechnology; Ilmenau University of Technology; Ilmenau Germany
| | - Gregor Schlingloff
- Department of Nanobiosystem Technology, Institute of Micro- and Nanotechnologies MacroNano®; Ilmenau University of Technology; Ilmenau Germany
- Institute of Chemistry and Biotechnology; Ilmenau University of Technology; Ilmenau Germany
| | - Michael Gebinoga
- Department of Nanobiosystem Technology, Institute of Micro- and Nanotechnologies MacroNano®; Ilmenau University of Technology; Ilmenau Germany
- Institute of Chemistry and Biotechnology; Ilmenau University of Technology; Ilmenau Germany
| | - Jörg Hampl
- Department of Nanobiosystem Technology, Institute of Micro- and Nanotechnologies MacroNano®; Ilmenau University of Technology; Ilmenau Germany
- Institute of Chemistry and Biotechnology; Ilmenau University of Technology; Ilmenau Germany
| | - Adam Williamson
- Department of Nanobiosystem Technology, Institute of Micro- and Nanotechnologies MacroNano®; Ilmenau University of Technology; Ilmenau Germany
- Institute of Chemistry and Biotechnology; Ilmenau University of Technology; Ilmenau Germany
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