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Cambier T, Honegger T, Vanneaux V, Berthier J, Peyrade D, Blanchoin L, Larghero J, Théry M. Design of a 2D no-flow chamber to monitor hematopoietic stem cells. LAB ON A CHIP 2015; 15:77-85. [PMID: 25338534 DOI: 10.1039/c4lc00807c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hematopoietic stem cells (HSCs) are the most commonly used cell type in cell-based therapy. However, the investigation of their behavior in vitro has been limited by the difficulty of monitoring these non-adherent cells under classical culture conditions. Indeed, fluid flow moves cells away from the video-recording position and prevents single cell tracking over long periods of time. Here we describe a large array of 2D no-flow chambers allowing the monitoring of single HSCs for several days. The chamber design has been optimized to facilitate manufacturing and routine use. The chip contains a single inlet and 800 chambers. The chamber medium can be renewed by diffusion within a few minutes. This allowed us to stain live human HSCs with fluorescent primary antibodies in order to reveal their stage in the hematopoiesis differentiation pathway. Thus we were able to correlate human HSCs' growth rate, polarization and migration to their differentiation stage.
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Affiliation(s)
- Théo Cambier
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherche en Technologie et Science pour le Vivant, UMR5168, CEA, INRA, CNRS, Université Grenoble-Alpes, Grenoble, France.
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52
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Puchberger-Enengl D, van den Driesche S, Krutzler C, Keplinger F, Vellekoop MJ. Hydrogel-based microfluidic incubator for microorganism cultivation and analyses. BIOMICROFLUIDICS 2015; 9:014127. [PMID: 25784966 PMCID: PMC4344467 DOI: 10.1063/1.4913647] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 02/16/2015] [Indexed: 05/05/2023]
Abstract
This work presents an array of microfluidic chambers for on-chip culturing of microorganisms in static and continuous shear-free operation modes. The unique design comprises an in-situ polymerized hydrogel that forms gas and reagent permeable culture wells in a glass chip. Utilizing a hydrophilic substrate increases usability by autonomous capillary priming. The thin gel barrier enables efficient oxygen supply and facilitates on-chip analysis by chemical access through the gel without introducing a disturbing flow to the culture. Trapping the suspended microorganisms inside a gel well allows for a much simpler fabrication than in conventional trapping devices as the minimal feature size does not depend on cell size. Nutrients and drugs are provided on-chip in the gel for a self-contained and user-friendly handling. Rapid antibiotic testing in static cultures with strains of Enterococcus faecalis and Escherichia coli is presented. Cell seeding and diffusive medium supply is provided by phaseguide technology, enabling simple operation of continuous culturing with a great flexibility. Cells of Saccharomyces cerevisiae are utilized as a model to demonstrate continuous on-chip culturing.
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Affiliation(s)
| | - Sander van den Driesche
- Institute for Microsensors, -actuators and -systems (IMSAS), MCB, University of Bremen , 28359 Bremen, Germany
| | - Christian Krutzler
- Austrian Center for Medical Innovation and Technology (ACMIT) , 2700 Wiener Neustadt, Austria
| | - Franz Keplinger
- Institute of Sensor and Actuator Systems (ISAS), Vienna University of Technology , 1040 Vienna, Austria
| | - Michael J Vellekoop
- Institute for Microsensors, -actuators and -systems (IMSAS), MCB, University of Bremen , 28359 Bremen, Germany
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53
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Glover K, Strang J, Lubansky A. Characterising the effect of geometry on a microchamber for producing controlled concentration gradients. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2014.06.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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54
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Halldorsson S, Lucumi E, Gómez-Sjöberg R, Fleming RMT. Advantages and challenges of microfluidic cell culture in polydimethylsiloxane devices. Biosens Bioelectron 2014; 63:218-231. [PMID: 25105943 DOI: 10.1016/j.bios.2014.07.029] [Citation(s) in RCA: 572] [Impact Index Per Article: 57.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 07/03/2014] [Accepted: 07/12/2014] [Indexed: 02/06/2023]
Abstract
Culture of cells using various microfluidic devices is becoming more common within experimental cell biology. At the same time, a technological radiation of microfluidic cell culture device designs is currently in progress. Ultimately, the utility of microfluidic cell culture will be determined by its capacity to permit new insights into cellular function. Especially insights that would otherwise be difficult or impossible to obtain with macroscopic cell culture in traditional polystyrene dishes, flasks or well-plates. Many decades of heuristic optimization have gone into perfecting conventional cell culture devices and protocols. In comparison, even for the most commonly used microfluidic cell culture devices, such as those fabricated from polydimethylsiloxane (PDMS), collective understanding of the differences in cellular behavior between microfluidic and macroscopic culture is still developing. Moving in vitro culture from macroscopic culture to PDMS based devices can come with unforeseen challenges. Changes in device material, surface coating, cell number per unit surface area or per unit media volume may all affect the outcome of otherwise standard protocols. In this review, we outline some of the advantages and challenges that may accompany a transition from macroscopic to microfluidic cell culture. We focus on decisive factors that distinguish macroscopic from microfluidic cell culture to encourage a reconsideration of how macroscopic cell culture principles might apply to microfluidic cell culture.
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Affiliation(s)
- Skarphedinn Halldorsson
- Center for Systems Biology and Biomedical Center, University of Iceland, Sturlugata 8, Reykjavik, Iceland
| | - Edinson Lucumi
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 7 avenue des Hauts-Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Rafael Gómez-Sjöberg
- Engineering Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, United States of America
| | - Ronan M T Fleming
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 7 avenue des Hauts-Fourneaux, Esch-sur-Alzette, Luxembourg.
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55
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Khanal G, Hiemstra S, Pappas D. Probing hypoxia-induced staurosporine resistance in prostate cancer cells with a microfluidic culture system. Analyst 2014; 139:3274-80. [PMID: 24479128 PMCID: PMC4043951 DOI: 10.1039/c3an02324a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A microfluidic system for cell culture and drug response studies was developed to elucidate the effects of hypoxia on drug susceptibility. Drug response studies were performed in prostate cancer cells and Ramos B cells under normoxic and hypoxic conditions. A vacuum actuated microfluidic culture device was used for cell culture and PC3 cells were cultured in the chip up to 16 hours. Cells were treated with several concentrations of staurosporine and apoptosis was assayed using the fluorescent probes MitoTracker Deep Red and Annexin-V. For hypoxic samples, the chip was placed in a hypoxia chamber and pre-conditioned at <1% oxygen before inducing the cells with staurosporine. Cells exposed to 2 μM staurosporine were 32% ± 10% apoptotic under normoxic conditions but only 1.5% ± 12% apoptotic under hypoxic conditions. As little as 1 hour of hypoxic preconditioning increased drug resistance. Cell apoptosis correlated with drug dose, although in each case hypoxia reduced the apoptotic fraction significantly. Given the rapid nature of cell adaptation to hypoxia, this chip and analysis approach can be used to identify compounds that can induce cell death in hypoxic tumor cells rapidly.
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Affiliation(s)
- Grishma Khanal
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA.
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56
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Kellogg RA, Gómez-Sjöberg R, Leyrat AA, Tay S. High-throughput microfluidic single-cell analysis pipeline for studies of signaling dynamics. Nat Protoc 2014; 9:1713-26. [DOI: 10.1038/nprot.2014.120] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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57
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Gao Y, Li P, Pappas D. A microfluidic localized, multiple cell culture array using vacuum actuated cell seeding: integrated anticancer drug testing. Biomed Microdevices 2014; 15:907-15. [PMID: 23813077 DOI: 10.1007/s10544-013-9779-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this study, we introduced a novel and convenient approach to culture multiple cells in localized arrays of microfluidic chambers using one-step vacuum actuation. In one device, we integrated 8 individually addressable regions of culture chambers, each only requiring one simple vacuum operation to seed cell lines. Four cell lines were seeded in designated regions in one device via sequential injection with high purity (99.9 %-100 %) and cultured for long-term. The on-chip simultaneous culture of HuT 78, Ramos, PC-3 and C166-GFP cells for 48 h was demonstrated with viabilities of 92 %+/-2 %, 94 %+/-4 %, 96 %+/-2 % and 97 %+/-2 %, respectively. The longest culture period for C166-GFP cells in this study was 168 h with a viability of 96 %+/-10 %. Cell proliferation in each individual side channel can be tracked. Mass transport between the main channel and side channels was achieved through diffusion and studied using fluorescein solution. The main advantage of this device is the capability to perform multiple cell-based assays on the same device for better comparative studies. After treating cells with staurosporine or anti-human CD95 for 16 h, the apoptotic cell percentage of HuT 78, CCRF-CEM, PC-3 and Ramos cells were 36 %+/-3 %, 24 %+/-4 %, 12 %+/-2 %, 18 %+/-4 % for staurosporine, and 63 %+/-2 %, 45 %+/-1 %, 3 %+/-3 %, 27 %+/-12 % for anti-human CD95, respectively. With the advantages of enhanced integration, ease of use and fabrication, and flexibility, this device will be suitable for long-term multiple cell monitoring and cell based assays.
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Affiliation(s)
- Yan Gao
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
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58
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Somaweera H, Ibragimov A, Pappas D. Generation of a chemical gradient across an array of 256 cell cultures in a single chip. Analyst 2014; 138:5566-71. [PMID: 23939026 DOI: 10.1039/c3an00946g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A microfluidic diffusion diluter to create stable chemical gradients across an array of cell cultures was demonstrated. The device enabled concentration based studies to be conducted at 256 different concentrations across individual, low shear cell cultures. A gradient of staurosporine on cells stained with Mitotracker Deep Red (MTDR) showed a concentration-based effect on cell apoptosis across the cell culture array.
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Affiliation(s)
- Himali Somaweera
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409, USA.
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59
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Jiang X, Kang Y, Pan X, Yu J, Ouyang Q, Luo C. Studies of the drug resistance response of sensitive and drug-resistant strains in a microfluidic system. Integr Biol (Camb) 2014; 6:143-51. [DOI: 10.1039/c3ib40164b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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60
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Wu J, Li H, Chen Q, Lin X, Liu W, Lin JM. Statistical single-cell analysis of cell cycle-dependent quantum dot cytotoxicity and cellular uptake using a microfluidic system. RSC Adv 2014. [DOI: 10.1039/c4ra01665c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The response of single cells in different cell cycle phases to QD cytotoxicity studied on a microfluidic device.
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Affiliation(s)
- Jing Wu
- Department of Chemistry
- Beijing Key Laboratory of Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084, China
- School of Science
| | - Haifang Li
- Department of Chemistry
- Beijing Key Laboratory of Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084, China
| | - Qiushui Chen
- Department of Chemistry
- Beijing Key Laboratory of Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084, China
| | - Xuexia Lin
- Department of Chemistry
- Beijing Key Laboratory of Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084, China
| | - Wu Liu
- Department of Chemistry
- Beijing Key Laboratory of Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084, China
| | - Jin-Ming Lin
- Department of Chemistry
- Beijing Key Laboratory of Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084, China
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61
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Siciliano V, Garzilli I, Fracassi C, Criscuolo S, Ventre S, di Bernardo D. MiRNAs confer phenotypic robustness to gene networks by suppressing biological noise. Nat Commun 2013; 4:2364. [PMID: 24077216 PMCID: PMC3836244 DOI: 10.1038/ncomms3364] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 07/26/2013] [Indexed: 01/23/2023] Open
Abstract
miRNAs are small non-coding RNAs able to modulate target gene expression. It has been postulated that miRNAs confer robustness to biological processes, but clear experimental evidence is still missing. Here, using a synthetic biological approach, we demonstrate that microRNAs provide phenotypic robustness to transcriptional regulatory networks by buffering fluctuations in protein levels. We construct a network motif in mammalian cells exhibiting a 'toggle-switch' phenotype in which two alternative protein expression levels define its ON and OFF states. The motif consists of an inducible transcription factor that self-regulates its own transcription and that of a miRNA against the transcription factor itself. We confirm, using mathematical modelling and experimental approaches, that the microRNA confers robustness to the toggle-switch by enabling the cell to maintain and transmit its state. When absent, a dramatic increase in protein noise level occurs, causing the cell to randomly switch between the two states.
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Affiliation(s)
- Velia Siciliano
- Telethon Institute of Genetics and Medicine (TIGEM), Via P. Castellino 111, 80131, Naples, Italy
| | - Immacolata Garzilli
- Telethon Institute of Genetics and Medicine (TIGEM), Via P. Castellino 111, 80131, Naples, Italy
| | - Chiara Fracassi
- Telethon Institute of Genetics and Medicine (TIGEM), Via P. Castellino 111, 80131, Naples, Italy
| | - Stefania Criscuolo
- Telethon Institute of Genetics and Medicine (TIGEM), Via P. Castellino 111, 80131, Naples, Italy
| | - Simona Ventre
- Telethon Institute of Genetics and Medicine (TIGEM), Via P. Castellino 111, 80131, Naples, Italy
| | - Diego di Bernardo
- Telethon Institute of Genetics and Medicine (TIGEM), Via P. Castellino 111, 80131, Naples, Italy
- Dept. of Electrical Engineering and Information Technology, University of Naples FEDERICO II, Via Claudio 21, 80125
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