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Bonifácio ED, Araújo CA, Guimarães MV, de Souza MP, Lima TP, de Avelar Freitas BA, González-Torres LA. Computational model of the cancer necrotic core formation in a tumor-on-a-chip device. J Theor Biol 2024; 592:111893. [PMID: 38944380 DOI: 10.1016/j.jtbi.2024.111893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/01/2024]
Abstract
The mechanisms underlying the formation of necrotic regions within avascular tumors are complex and poorly understood. In this paper, we investigate the formation of a necrotic core in a 3D tumor cell culture within a microfluidic device, considering oxygen, nutrients, and the microenvironment acidification by means of a computational-mathematical model. Our objective is to simulate cell processes, including proliferation and death inside a microfluidic device, according to the microenvironmental conditions. We employed approximation utilizing finite element models taking into account glucose, oxygen, and hydrogen ions diffusion, consumption and production, as well as cell proliferation, migration and death, addressing how tumor cells evolve under different conditions. The resulting mathematical model was examined under different scenarios, being capable of reproducing cell death and proliferation under different cell concentrations, and the formation of a necrotic core, in good agreement with experimental data reported in the literature. This approach not only advances our fundamental understanding of necrotic core formation but also provides a robust computational platform to study personalized therapeutic strategies, offering an important tool in cancer research and treatment design.
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Affiliation(s)
- Elton Diêgo Bonifácio
- Institute of Science and Technology - UFVJM, Diamantina, Brazil; Brazilian Reference Center for Assistive Technological Innovations (CINTESP.Br) - UFU, Uberlandia, Brazil.
| | - Cleudmar Amaral Araújo
- Brazilian Reference Center for Assistive Technological Innovations (CINTESP.Br) - UFU, Uberlandia, Brazil
| | | | - Márcio Peres de Souza
- Brazilian Reference Center for Assistive Technological Innovations (CINTESP.Br) - UFU, Uberlandia, Brazil
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Carvalho V, Gonçalves IM, Rodrigues N, Sousa P, Pinto V, Minas G, Kaji H, Shin SR, Rodrigues RO, Teixeira SFCF, Lima RA. Numerical evaluation and experimental validation of fluid flow behavior within an organ-on-a-chip model. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2024; 243:107883. [PMID: 37944399 DOI: 10.1016/j.cmpb.2023.107883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/22/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND AND OBJECTIVE By combining biomaterials, cell culture, and microfluidic technology, organ-on-a-chip (OoC) platforms have the ability to reproduce the physiological microenvironment of human organs. For this reason, these advanced microfluidic devices have been used to resemble various diseases and investigate novel treatments. In addition to the experimental assessment, numerical studies of biodevices have been performed aiming at their improvement and optimization. Despite considerable progress in numerical modeling of biodevices, the validation of these computational models through comparison with experimental assays remains a significant gap in the current literature. This step is critical to ensure the accuracy and reliability of numerical models, and consequently enhance confidence in their predictive results. The aim of the present work is to develop a numerical model capable of reproducing the fluid flow behavior within an OoC, for future investigations, encompassing the geometry optimization. METHODS In this study, the validation of a numerical model for an OoC microfluidic device was undertaken. This comprised both quantitative and qualitative assessments of trace microparticles flowing through a physical OoC model. High-speed microscopy images of the flow, using a blood analog fluid, were analyzed and compared with the numerical simulations run using the Ansys Fluent software. For a qualitative analysis, the particles' paths through the inlet and bifurcations were observed whereas, for a quantitative analysis, the particle velocities were measured. Furthermore, oxygen transport was simulated and evaluated for different Reynolds numbers. RESULTS In both qualitative and quantitative analyses, the results predicted by the numerical model and the ones outputted by the experimental model were in good agreement. These findings underscore the capability and potential of the developed numerical model. The examination of oxygen transport at various vertical positions within the organoid has revealed that for lower positions, oxygen transport predominantly occurs through diffusion, leading to a symmetric distribution of oxygen. Contrastingly, the convection phenomenon becomes more evident in the upper region of the organoid. CONCLUSIONS The successful validation of the numerical model against experimental data shows its accuracy and reliability in simulating the fluid flow within the OoC, which consequently can expedite the OoC design process by reducing the need for prototypes' fabrication and costly laboratory experiments.
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Affiliation(s)
- Violeta Carvalho
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA; MEtRICs, Mechanical Engineering Department, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; ALGORITMI Center/LASI, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; Center for MicroElectromechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; LABBELS-Associate Laboratory, Braga/Guimarães, Portugal.
| | - Inês M Gonçalves
- MEtRICs, Mechanical Engineering Department, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; Institute of Biomaterials and Bioengineering (IBB), Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan; Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Nelson Rodrigues
- ALGORITMI Center/LASI, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Paulo Sousa
- Center for MicroElectromechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; LABBELS-Associate Laboratory, Braga/Guimarães, Portugal
| | - Vânia Pinto
- Center for MicroElectromechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; LABBELS-Associate Laboratory, Braga/Guimarães, Portugal
| | - Graça Minas
- Center for MicroElectromechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; LABBELS-Associate Laboratory, Braga/Guimarães, Portugal
| | - Hirokazu Kaji
- Institute of Biomaterials and Bioengineering (IBB), Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan
| | - Su Ryon Shin
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Raquel O Rodrigues
- Center for MicroElectromechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; LABBELS-Associate Laboratory, Braga/Guimarães, Portugal
| | | | - Rui A Lima
- MEtRICs, Mechanical Engineering Department, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; CEFT - Transport Phenomena Research Center, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
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Amirifar L, Shamloo A, Nasiri R, de Barros NR, Wang ZZ, Unluturk BD, Libanori A, Ievglevskyi O, Diltemiz SE, Sances S, Balasingham I, Seidlits SK, Ashammakhi N. Brain-on-a-chip: Recent advances in design and techniques for microfluidic models of the brain in health and disease. Biomaterials 2022; 285:121531. [DOI: 10.1016/j.biomaterials.2022.121531] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 04/10/2022] [Accepted: 04/15/2022] [Indexed: 12/12/2022]
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Zoio P, Oliva A. Skin-on-a-Chip Technology: Microengineering Physiologically Relevant In Vitro Skin Models. Pharmaceutics 2022; 14:pharmaceutics14030682. [PMID: 35336056 PMCID: PMC8955316 DOI: 10.3390/pharmaceutics14030682] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 02/06/2023] Open
Abstract
The increased demand for physiologically relevant in vitro human skin models for testing pharmaceutical drugs has led to significant advancements in skin engineering. One of the most promising approaches is the use of in vitro microfluidic systems to generate advanced skin models, commonly known as skin-on-a-chip (SoC) devices. These devices allow the simulation of key mechanical, functional and structural features of the human skin, better mimicking the native microenvironment. Importantly, contrary to conventional cell culture techniques, SoC devices can perfuse the skin tissue, either by the inclusion of perfusable lumens or by the use of microfluidic channels acting as engineered vasculature. Moreover, integrating sensors on the SoC device allows real-time, non-destructive monitoring of skin function and the effect of topically and systemically applied drugs. In this Review, the major challenges and key prerequisites for the creation of physiologically relevant SoC devices for drug testing are considered. Technical (e.g., SoC fabrication and sensor integration) and biological (e.g., cell sourcing and scaffold materials) aspects are discussed. Recent advancements in SoC devices are here presented, and their main achievements and drawbacks are compared and discussed. Finally, this review highlights the current challenges that need to be overcome for the clinical translation of SoC devices.
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Affiliation(s)
- Patrícia Zoio
- Instituto de Tecnologia Química e Biológica (ITQB), Universidade Nova de Lisboa, Avenida da República, Estação Agronómica Nacional, 2780-157 Oeiras, Portugal;
| | - Abel Oliva
- Instituto de Tecnologia Química e Biológica (ITQB), Universidade Nova de Lisboa, Avenida da República, Estação Agronómica Nacional, 2780-157 Oeiras, Portugal;
- Instituto de Biologia Experimental e Tecnológica (IBET), 2781-901 Oeiras, Portugal
- Correspondence:
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A new insight into a thermoplastic microfluidic device aimed at improvement of oxygenation process and avoidance of shear stress during cell culture. Biomed Microdevices 2022; 24:15. [PMID: 35277762 PMCID: PMC8917112 DOI: 10.1007/s10544-022-00615-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2022] [Indexed: 01/01/2023]
Abstract
Keeping the oxygen concentration at the desired physiological limits is a challenging task in cellular microfluidic devices. A good knowledge of affecting parameters would be helpful to control the oxygen delivery to cells. This study aims to provide a fundamental understanding of oxygenation process within a hydrogel-based microfluidic device considering simultaneous mass transfer, medium flow, and cellular consumption. For this purpose, the role of geometrical and hydrodynamic properties was numerically investigated. The results are in good agreement with both numerical and experimental data in the literature. The obtained results reveal that increasing the microchannel height delays the oxygen depletion in the absence of media flow. We also observed that increasing the medium flow rate increases the oxygen concentration in the device; however, it leads to high maximum shear stress. A novel pulsatile medium flow injection pattern is introduced to reduce detrimental effect of the applied shear stress on the cells.
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Pattanayak P, Singh SK, Gulati M, Vishwas S, Kapoor B, Chellappan DK, Anand K, Gupta G, Jha NK, Gupta PK, Prasher P, Dua K, Dureja H, Kumar D, Kumar V. Microfluidic chips: recent advances, critical strategies in design, applications and future perspectives. MICROFLUIDICS AND NANOFLUIDICS 2021; 25:99. [PMID: 34720789 PMCID: PMC8547131 DOI: 10.1007/s10404-021-02502-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 10/19/2021] [Indexed: 05/12/2023]
Abstract
Microfluidic chip technology is an emerging tool in the field of biomedical application. Microfluidic chip includes a set of groves or microchannels that are engraved on different materials (glass, silicon, or polymers such as polydimethylsiloxane or PDMS, polymethylmethacrylate or PMMA). The microchannels forming the microfluidic chip are interconnected with each other for desired results. This organization of microchannels trapped into the microfluidic chip is associated with the outside by inputs and outputs penetrating through the chip, as an interface between the macro- and miniature world. With the help of a pump and a chip, microfluidic chip helps to determine the behavioral change of the microfluids. Inside the chip, there are microfluidic channels that permit the processing of the fluid, for example, blending and physicochemical responses. Microfluidic chip has numerous points of interest including lesser time and reagent utilization and alongside this, it can execute numerous activities simultaneously. The miniatured size of the chip fastens the reaction as the surface area increases. It is utilized in different biomedical applications such as food safety sensing, peptide analysis, tissue engineering, medical diagnosis, DNA purification, PCR activity, pregnancy, and glucose estimation. In the present study, the design of various microfluidic chips has been discussed along with their biomedical applications.
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Affiliation(s)
- Prapti Pattanayak
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411 India
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411 India
| | - Monica Gulati
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411 India
| | - Sukriti Vishwas
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411 India
| | - Bhupinder Kapoor
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411 India
| | - Dinesh Kumar Chellappan
- School of Pharmacy, International Medical University, Bukit Jalil, 57000 Kuala Lumpur, Malaysia
| | - Krishnan Anand
- Department of Chemical Pathology, School of Pathology, Faculty of Health Sciences and National Health Laboratory Service, University of the Free State, Bloemfontein, South Africa
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Mahal Road, Jagatpura, Jaipur, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology (SET), Sharda University, Greater Noida, Uttar Pradesh 201310 India
| | - Piyush Kumar Gupta
- Department of Life Sciences, School of Basic Sciences and Research, Sharda University, Plot no. 32-34, Knowledge Park III, Greater Noida, Uttar Pradesh 201310 India
| | - Parteek Prasher
- Department of Chemistry, University of Petroleum & Energy Studies, Energy Acres, Dehradun, 248007 India
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007 Australia
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, Australia
| | - Harish Dureja
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana 12401 India
| | - Deepak Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan, 173229 India
| | - Vijay Kumar
- School of Bioengineering and Bioscience, Lovely Professional University, Phagwara, Punjab 144411 India
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Carvalho V, Rodrigues RO, Lima RA, Teixeira S. Computational Simulations in Advanced Microfluidic Devices: A Review. MICROMACHINES 2021; 12:mi12101149. [PMID: 34683199 PMCID: PMC8539624 DOI: 10.3390/mi12101149] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/14/2021] [Accepted: 09/21/2021] [Indexed: 12/11/2022]
Abstract
Numerical simulations have revolutionized research in several engineering areas by contributing to the understanding and improvement of several processes, being biomedical engineering one of them. Due to their potential, computational tools have gained visibility and have been increasingly used by several research groups as a supporting tool for the development of preclinical platforms as they allow studying, in a more detailed and faster way, phenomena that are difficult to study experimentally due to the complexity of biological processes present in these models—namely, heat transfer, shear stresses, diffusion processes, velocity fields, etc. There are several contributions already in the literature, and significant advances have been made in this field of research. This review provides the most recent progress in numerical studies on advanced microfluidic devices, such as organ-on-a-chip (OoC) devices, and how these studies can be helpful in enhancing our insight into the physical processes involved and in developing more effective OoC platforms. In general, it has been noticed that in some cases, the numerical studies performed have limitations that need to be improved, and in the majority of the studies, it is extremely difficult to replicate the data due to the lack of detail around the simulations carried out.
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Affiliation(s)
- Violeta Carvalho
- MEtRICs, Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
- ALGORITMI, Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
- Correspondence:
| | - Raquel O. Rodrigues
- Center for MicroElectromechanical Systems (CMEMS-UMinho), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
| | - Rui A. Lima
- MEtRICs, Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
- CEFT, R. Dr. Roberto Frias, Faculty of Engineering of the University of Porto (FEUP), 4200-465 Porto, Portugal
| | - Senhorinha Teixeira
- ALGORITMI, Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
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Baydoun M, Treizeibré A, Follet J, Benamrouz Vanneste S, Creusy C, Dercourt L, Delaire B, Mouray A, Viscogliosi E, Certad G, Senez V. An Interphase Microfluidic Culture System for the Study of Ex Vivo Intestinal Tissue. MICROMACHINES 2020; 11:E150. [PMID: 32019215 PMCID: PMC7074597 DOI: 10.3390/mi11020150] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/21/2020] [Accepted: 01/28/2020] [Indexed: 11/22/2022]
Abstract
Ex vivo explant culture models offer unique properties to study complex mechanisms underlying tissue growth, renewal, and disease. A major weakness is the short viability depending on the biopsy origin and preparation protocol. We describe an interphase microfluidic culture system to cultivate full thickness murine colon explants which keeps morphological structures of the tissue up to 192 h. The system was composed of a central well on top of a porous membrane supported by a microchannel structure. The microfluidic perfusion allowed bathing the serosal side while preventing immersion of the villi. After eight days, up to 33% of the samples displayed no histological abnormalities. Numerical simulation of the transport of oxygen and glucose provided technical solutions to improve the functionality of the microdevice.
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Affiliation(s)
- Martha Baydoun
- Univ. Lille, CNRS, ISEN-YNCREA, UMR 8520-IEMN, F-59000 Lille, France
- ISA-YNCREA Hauts de France, F-59000 Lille, France
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9107-CIIL-Centre d’Infection et d’Immunité de Lille, F-59019 Lille, France
| | | | - Jérôme Follet
- Univ. Lille, CNRS, ISEN-YNCREA, UMR 8520-IEMN, F-59000 Lille, France
- ISA-YNCREA Hauts de France, F-59000 Lille, France
| | - Sadia Benamrouz Vanneste
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9107-CIIL-Centre d’Infection et d’Immunité de Lille, F-59019 Lille, France
- Laboratoire Ecologie et Biodiversité, Unité de Recherche Smart and Sustainable Cities, Faculté de Gestion Economie et Sciences, Institut Catholique de Lille, F-59800 Lille, France
| | - Colette Creusy
- Service d’Anatomie et de Cytologie Pathologiques, Groupement des Hôpitaux de l’Université Catholique de Lille, 59000 Lille, France
| | - Lucie Dercourt
- CNRS, Univ. Tokyo, UMI 2820 — LIMMS, F-59000 Lille, France
| | - Baptiste Delaire
- Service d’Anatomie et de Cytologie Pathologiques, Groupement des Hôpitaux de l’Université Catholique de Lille, 59000 Lille, France
| | - Anthony Mouray
- Plateforme d’Expérimentations et de Hautes Technologies Animales, Institut Pasteur de Lille Lille, 59019 Lille, France
| | - Eric Viscogliosi
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9107-CIIL-Centre d’Infection et d’Immunité de Lille, F-59019 Lille, France
| | - Gabriela Certad
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9107-CIIL-Centre d’Infection et d’Immunité de Lille, F-59019 Lille, France
- Délégation à la Recherche Clinique et à l’Innovation, Groupement des Hôpitaux de l’Institut Catholique de Lille (GHICL), Faculté de Médecine et Maïeutique, Université Catholique de Lille, 59800 Lille, France
| | - Vincent Senez
- Univ. Lille, CNRS, ISEN-YNCREA, UMR 8520-IEMN, F-59000 Lille, France
- CNRS, Univ. Tokyo, UMI 2820 — LIMMS, F-59000 Lille, France
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Piemonte V, Cerbelli S, Capocelli M, Di Paola L, Prisciandaro M, Basile A. Design of microfluidic bioreactors: Transport regimes. ASIA-PAC J CHEM ENG 2018. [DOI: 10.1002/apj.2238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Vincenzo Piemonte
- Faculty of Engineering; University Campus Bio-Medico of Rome; Rome Italy
| | - Stefano Cerbelli
- Department of Chemical Engineering; University of Rome “La Sapienza”; Rome Italy
| | - Mauro Capocelli
- Faculty of Engineering; University Campus Bio-Medico of Rome; Rome Italy
| | - Luisa Di Paola
- Faculty of Engineering; University Campus Bio-Medico of Rome; Rome Italy
| | - Marina Prisciandaro
- Department of Industrial and Information Engineering and of Economics; University of L'Aquila; L'Aquila Italy
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10
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Optimization of oxygen transport within a tissue engineered vascular graft model using embedded micro-channels inspired by vasa vasorum. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.02.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Demers CJ, Cox G, Collins SD, Smith RL. Directing the spatial patterning of motor neuron differentiation in engineered microenvironments. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2017; 2016:477-480. [PMID: 28268375 DOI: 10.1109/embc.2016.7590743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Embryonic development of the spinal cord proceeds through a carefully orchestrated temporal and spatial sequence of chemical cues to provide precise patterning of adult cell types. Recreating this complex microenvironment in a standard cell culture dish is difficult, if not impossible. In this paper, a microfluidic device is used to recapitulate, in vitro, the graded patterning events which occur during early spinal cord development. The microdevice design is developed using COMSOL modeling, with which the spatiotemporal profiles of multiple, diffusible morphogens are simulated. Four independently addressed source/sinks are employed to generate two overlapping orthogonal gradients within a cell culture chamber, mimicking the dorsoventral and anteroposterior axes of the developing embryo. Mouse embryonic stem cells are directed therein to differentiate into motor neurons in a spatially organized manner, reminiscent of a neural tube.
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Sové RJ, Fraser GM, Goldman D, Ellis CG. Finite Element Model of Oxygen Transport for the Design of Geometrically Complex Microfluidic Devices Used in Biological Studies. PLoS One 2016; 11:e0166289. [PMID: 27829071 PMCID: PMC5102494 DOI: 10.1371/journal.pone.0166289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/26/2016] [Indexed: 01/09/2023] Open
Abstract
Red blood cells play a crucial role in the local regulation of oxygen supply in the microcirculation through the oxygen dependent release of ATP. Since red blood cells serve as an oxygen sensor for the circulatory system, the dynamics of ATP release determine the effectiveness of red blood cells to relate the oxygen levels to the vessels. Previous work has focused on the feasibility of developing a microfluidic system to measure the dynamics of ATP release. The objective was to determine if a steep oxygen gradient could be developed in the channel to cause a rapid decrease in hemoglobin oxygen saturation in order to measure the corresponding levels of ATP released from the red blood cells. In the present study, oxygen transport simulations were used to optimize the geometric design parameters for a similar system which is easier to fabricate. The system is composed of a microfluidic device stacked on top of a large, gas impermeable flow channel with a hole to allow gas exchange. The microfluidic device is fabricated using soft lithography in polydimethyl-siloxane, an oxygen permeable material. Our objective is twofold: (1) optimize the parameters of our system and (2) develop a method to assess the oxygen distribution in complex 3D microfluidic device geometries. 3D simulations of oxygen transport were performed to simulate oxygen distribution throughout the device. The simulations demonstrate that microfluidic device geometry plays a critical role in molecule exchange, for instance, changing the orientation of the short wide microfluidic channel results in a 97.17% increase in oxygen exchange. Since microfluidic devices have become a more prominent tool in biological studies, understanding the transport of oxygen and other biological molecules in microfluidic devices is critical for maintaining a physiologically relevant environment. We have also demonstrated a method to assess oxygen levels in geometrically complex microfluidic devices.
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Affiliation(s)
- Richard J. Sové
- Department of Medical Biophysics, Western University, London, Ontario, Canada
| | - Graham M. Fraser
- Department of Medical Biophysics, Western University, London, Ontario, Canada
- Cardiovascular Research Group, Division of BioMedical Sciences, Faculty of Medicine, Memorial University, St. John’s, Newfoundland, Canada
| | - Daniel Goldman
- Department of Medical Biophysics, Western University, London, Ontario, Canada
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Super A, Jaccard N, Cardoso Marques MP, Macown RJ, Griffin LD, Veraitch FS, Szita N. Real-time monitoring of specific oxygen uptake rates of embryonic stem cells in a microfluidic cell culture device. Biotechnol J 2016; 11:1179-89. [PMID: 27214658 PMCID: PMC5103178 DOI: 10.1002/biot.201500479] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 02/15/2016] [Accepted: 05/12/2016] [Indexed: 01/07/2023]
Abstract
Oxygen plays a key role in stem cell biology as a signaling molecule and as an indicator of cell energy metabolism. Quantification of cellular oxygen kinetics, i.e. the determination of specific oxygen uptake rates (sOURs), is routinely used to understand metabolic shifts. However current methods to determine sOUR in adherent cell cultures rely on cell sampling, which impacts on cellular phenotype. We present real‐time monitoring of cell growth from phase contrast microscopy images, and of respiration using optical sensors for dissolved oxygen. Time‐course data for bulk and peri‐cellular oxygen concentrations obtained for Chinese hamster ovary (CHO) and mouse embryonic stem cell (mESCs) cultures successfully demonstrated this non‐invasive and label‐free approach. Additionally, we confirmed non‐invasive detection of cellular responses to rapidly changing culture conditions by exposing the cells to mitochondrial inhibiting and uncoupling agents. For the CHO and mESCs, sOUR values between 8 and 60 amol cell−1 s−1, and 5 and 35 amol cell−1 s−1 were obtained, respectively. These values compare favorably with literature data. The capability to monitor oxygen tensions, cell growth, and sOUR, of adherent stem cell cultures, non‐invasively and in real time, will be of significant benefit for future studies in stem cell biology and stem cell‐based therapies.
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Affiliation(s)
- Alexandre Super
- Department of Biochemical Engineering, University College London, London, United Kingdom
| | - Nicolas Jaccard
- Department of Biochemical Engineering, University College London, London, United Kingdom.,Centre for Mathematics and Physics in the Life Sciences and Experimental Biology, University College London, London, United Kingdom.,Department of Computer Science, University College London, London, United Kingdom
| | | | - Rhys Jarred Macown
- Department of Biochemical Engineering, University College London, London, United Kingdom
| | - Lewis Donald Griffin
- Department of Computer Science, University College London, London, United Kingdom
| | - Farlan Singh Veraitch
- Department of Biochemical Engineering, University College London, London, United Kingdom
| | - Nicolas Szita
- Department of Biochemical Engineering, University College London, London, United Kingdom.
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15
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Mäki AJ, Peltokangas M, Kreutzer J, Auvinen S, Kallio P. Modeling carbon dioxide transport in PDMS-based microfluidic cell culture devices. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2015.06.065] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Design Criteria for Generating Physiologically Relevant In Vitro Models in Bioreactors. Processes (Basel) 2014. [DOI: 10.3390/pr2030548] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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17
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Wagner K, Friedrich S, Stang C, Bley T, Schilling N, Bieda M, Lasagni A, Boschke E. Initial phases of microbial biofilm formation on opaque, innovative anti-adhesive surfaces using a modular microfluidic system. Eng Life Sci 2013. [DOI: 10.1002/elsc.201200035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Katrin Wagner
- Institute of Food Technology and Bioprocess Engineering; Technische Universität Dresden; Dresden Germany
| | - Sandra Friedrich
- Institute of Food Technology and Bioprocess Engineering; Technische Universität Dresden; Dresden Germany
| | - Carolin Stang
- Institute of Food Technology and Bioprocess Engineering; Technische Universität Dresden; Dresden Germany
| | - Thomas Bley
- Institute of Food Technology and Bioprocess Engineering; Technische Universität Dresden; Dresden Germany
| | - Niels Schilling
- Fraunhofer Institute for Material and Beam Technology IWS; Dresden Germany
| | - Matthias Bieda
- Fraunhofer Institute for Material and Beam Technology IWS; Dresden Germany
| | - Andrés Lasagni
- Fraunhofer Institute for Material and Beam Technology IWS; Dresden Germany
| | - Elke Boschke
- Institute of Food Technology and Bioprocess Engineering; Technische Universität Dresden; Dresden Germany
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18
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Funamoto K, Zervantonakis IK, Liu Y, Ochs CJ, Kim C, Kamm RD. A novel microfluidic platform for high-resolution imaging of a three-dimensional cell culture under a controlled hypoxic environment. LAB ON A CHIP 2012; 12:4855-63. [PMID: 23023115 PMCID: PMC4086303 DOI: 10.1039/c2lc40306d] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Low oxygen tensions experienced in various pathological and physiological conditions are a major stimulus for angiogenesis. Hypoxic conditions play a critical role in regulating cellular behaviour including migration, proliferation and differentiation. This study introduces the use of a microfluidic device that allows for the control of oxygen tension for the study of different three-dimensional (3D) cell cultures for various applications. The device has a central 3D gel region acting as an external cellular matrix, flanked by media channels. On each side, there is a peripheral gas channel through which suitable gas mixtures are supplied to establish a uniform oxygen tension or gradient within the device. The effects of various parameters, such as gas and media flow rates, device thickness, and diffusion coefficients of oxygen were examined using numerical simulations to determine the characteristics of the microfluidic device. A polycarbonate (PC) film with a low oxygen diffusion coefficient was embedded in the device in proximity above the channels to prevent oxygen diffusion from the incubator environment into the polydimethylsiloxane (PDMS) device. The oxygen tension in the device was then validated experimentally using a ruthenium-coated (Ru-coated) oxygen-sensing glass cover slip which confirmed the establishment of low uniform oxygen tensions (<3%) or an oxygen gradient across the gel region. To demonstrate the utility of the microfluidic device for cellular experiments under hypoxic conditions, migratory studies of MDA-MB-231 human breast cancer cells were performed. The microfluidic device allowed for imaging cellular migration with high-resolution, exhibiting an enhanced migration in hypoxia in comparison to normoxia. This microfluidic device presents itself as a promising platform for the investigation of cellular behaviour in a 3D gel scaffold under varying hypoxic conditions.
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Affiliation(s)
- Kenichi Funamoto
- Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ioannis K. Zervantonakis
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Yuchun Liu
- BIOMAT, Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117576, Singapore
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- SMART BioSystems & Micromechanics (BioSyM), Singapore 117543, Singapore
| | - Christopher J. Ochs
- SMART BioSystems & Micromechanics (BioSyM), Singapore 117543, Singapore
- Division of Bioengineering, National University of Singapore, Singapore 117576, Singapore
| | - Choong Kim
- SMART BioSystems & Micromechanics (BioSyM), Singapore 117543, Singapore
- Division of Bioengineering, National University of Singapore, Singapore 117576, Singapore
| | - Roger D. Kamm
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- SMART BioSystems & Micromechanics (BioSyM), Singapore 117543, Singapore
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19
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Modeling and simulation of the mass transfer of volatile compounds in a membrane device for toxicity tests. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2012.06.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Millet LJ, Gillette MU. New perspectives on neuronal development via microfluidic environments. Trends Neurosci 2012; 35:752-61. [PMID: 23031246 DOI: 10.1016/j.tins.2012.09.001] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 08/18/2012] [Accepted: 09/06/2012] [Indexed: 11/28/2022]
Abstract
Understanding the signals that guide neuronal development and direct formation of axons, dendrites, and synapses during wiring of the brain is a fundamental challenge in developmental neuroscience. Discovery of how local signals shape developing neurons has been impeded by the inability of conventional culture methods to interrogate microenvironments of complex neuronal cytoarchitectures, where different subdomains encounter distinct chemical, physical, and fluidic features. Microfabrication techniques are facilitating the creation of microenvironments tailored to neuronal structures and subdomains with unprecedented access and control. The design, fabrication, and properties of microfluidic devices offer significant advantages for addressing unresolved issues of neuronal development. These high-resolution approaches are poised to contribute new insights into mechanisms for restoring neuronal function and connectivity compromised by injury, stress, and neurodegeneration.
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Affiliation(s)
- Larry J Millet
- Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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