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Co-deposition of pyrogallol/polyethyleneimine on polymer membranes for highly efficient treatment of oil-in-water emulsion. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118660] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Shin W, Ambrosini YM, Shin YC, Wu A, Min S, Koh D, Park S, Kim S, Koh H, Kim HJ. Robust Formation of an Epithelial Layer of Human Intestinal Organoids in a Polydimethylsiloxane-Based Gut-on-a-Chip Microdevice. FRONTIERS IN MEDICAL TECHNOLOGY 2020; 2. [PMID: 33532747 PMCID: PMC7849371 DOI: 10.3389/fmedt.2020.00002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Polydimethylsiloxane (PDMS) is a silicone polymer that has been predominantly used in a human organ-on-a-chip microphysiological system. The hydrophobic surface of a microfluidic channel made of PDMS often results in poor adhesion of the extracellular matrix (ECM) as well as cell attachment. The surface modification by plasma or UV/ozone treatment in a PDMS-based device produces a hydrophilic surface that allows robust ECM coating and the reproducible attachment of human intestinal immortalized cell lines. However, these surface-activating methods have not been successful in forming a monolayer of the biopsy-derived primary organoid epithelium. Several existing protocols to grow human intestinal organoid cells in a PDMS microchannel are not always reproducibly operative due to the limited information. Here, we report an optimized methodology that enables robust and reproducible attachment of the intestinal organoid epithelium in a PDMS-based gut-on-a-chip. Among several reported protocols, we optimized a method by performing polyethyleneimine-based surface functionalization followed by the glutaraldehyde cross linking to activate the PDMS surface. Moreover, we discovered that the post-functionalization step contributes to provide uniform ECM deposition that allows to produce a robust attachment of the dissociated intestinal organoid epithelium in a PDMS-based microdevice. We envision that our optimized protocol may disseminate an enabling methodology to advance the integration of human organotypic cultures in a human organ-on-a-chip for patient-specific disease modeling.
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Affiliation(s)
- Woojung Shin
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Yoko M Ambrosini
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Yong Cheol Shin
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Alexander Wu
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Soyoun Min
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Domin Koh
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Sowon Park
- Severance Fecal Microbiota Transplantation Center, Severance Hospital, Department of Pediatrics, Yonsei University College of Medicine, Seoul, South Korea
| | - Seung Kim
- Severance Fecal Microbiota Transplantation Center, Severance Hospital, Department of Pediatrics, Yonsei University College of Medicine, Seoul, South Korea
| | - Hong Koh
- Severance Fecal Microbiota Transplantation Center, Severance Hospital, Department of Pediatrics, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun Jung Kim
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States.,Department of Oncology, Dell Medical School, The University of Texas at Austin, Austin, TX, United States
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