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Ongaro AE, Di Giuseppe D, Kermanizadeh A, Miguelez Crespo A, Mencattini A, Ghibelli L, Mancini V, Wlodarczyk KL, Hand DP, Martinelli E, Stone V, Howarth N, La Carrubba V, Pensabene V, Kersaudy-Kerhoas M. Polylactic is a Sustainable, Low Absorption, Low Autofluorescence Alternative to Other Plastics for Microfluidic and Organ-on-Chip Applications. Anal Chem 2020; 92:6693-6701. [PMID: 32233401 DOI: 10.1021/acs.analchem.0c00651] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Organ-on-chip (OOC) devices are miniaturized devices replacing animal models in drug discovery and toxicology studies. The majority of OOC devices are made from polydimethylsiloxane (PDMS), an elastomer widely used in microfluidic prototyping, but posing a number of challenges to experimentalists, including leaching of uncured oligomers and uncontrolled absorption of small compounds. Here we assess the suitability of polylactic acid (PLA) as a replacement material to PDMS for microfluidic cell culture and OOC applications. We changed the wettability of PLA substrates and demonstrated the functionalization method to be stable over a time period of at least 9 months. We successfully cultured human cells on PLA substrates and devices, without coating. We demonstrated that PLA does not absorb small molecules, is transparent (92% transparency), and has low autofluorescence. As a proof of concept of its manufacturability, biocompatibility, and transparency, we performed a cell tracking experiment of prostate cancer cells in a PLA device for advanced cell culture.
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Affiliation(s)
- Alfredo E Ongaro
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.,Division of Infection and Pathway Medicine, Edinburgh Medical School, College of Medicine and Veterinary Medicine, The University of Edinburgh, Edinburgh EH164SB, United Kingdom.,Department of Engineering, Università degli Studi di Palermo, Viale delle Scienze building 5, 90128 Palermo, Italy
| | - Davide Di Giuseppe
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Ali Kermanizadeh
- School of Medical Sciences, University of Bangor, LL57 2AS Bangor, United Kingdom
| | - Allende Miguelez Crespo
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Arianna Mencattini
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Lina Ghibelli
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Vanessa Mancini
- School of Electronic and Electrical Engineering, Pollard Institute, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, United Kingdom
| | - Krystian L Wlodarczyk
- Institute of Photonics and Quantum Sciences, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Duncan P Hand
- Institute of Photonics and Quantum Sciences, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Eugenio Martinelli
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Vicki Stone
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Nicola Howarth
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Vincenzo La Carrubba
- Department of Engineering, Università degli Studi di Palermo, Viale delle Scienze building 5, 90128 Palermo, Italy.,INSTM, Palermo Research Unit, Viale delle Scienze building 6, 90128 Palermo, Italy.,ATeN Center, Università degli Studi di Palermo, Viale delle Scienze building 18, 90128 Palermo, Italy
| | - Virginia Pensabene
- School of Electronic and Electrical Engineering, Pollard Institute, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, United Kingdom.,School of Medicine, Leeds Institute of Medical Research, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, United Kingdom
| | - Maïwenn Kersaudy-Kerhoas
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.,Division of Infection and Pathway Medicine, Edinburgh Medical School, College of Medicine and Veterinary Medicine, The University of Edinburgh, Edinburgh EH164SB, United Kingdom
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