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Courson R, Bratash O, Maziz A, Desmet C, Meza RA, Leroy L, Engel E, Buhot A, Malaquin L, Leïchlé T. Rapid prototyping of a polymer MEMS droplet dispenser by laser-assisted 3D printing. MICROSYSTEMS & NANOENGINEERING 2023; 9:85. [PMID: 37408536 PMCID: PMC10318032 DOI: 10.1038/s41378-023-00559-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/01/2023] [Accepted: 05/23/2023] [Indexed: 07/07/2023]
Abstract
In this work, we introduce a polymer version of a previously developed silicon MEMS drop deposition tool for surface functionalization that consists of a microcantilever integrating an open fluidic channel and a reservoir. The device is fabricated by laser stereolithography, which offers the advantages of low-cost and fast prototyping. Additionally, thanks to the ability to process multiple materials, a magnetic base is incorporated into the cantilever for convenient handling and attachment to the holder of a robotized stage used for spotting. Droplets with diameters ranging from ∼50 µm to ∼300 µm are printed upon direct contact of the cantilever tip with the surface to pattern. Liquid loading is achieved by fully immersing the cantilever into a reservoir drop, where a single load results in the deposition of more than 200 droplets. The influences of the size and shape of the cantilever tip and the reservoir on the printing outcome are studied. As a proof-of-concept of the biofunctionalization capability of this 3D printed droplet dispenser, microarrays of oligonucleotides and antibodies displaying high specificity and no cross-contamination are fabricated, and droplets are deposited at the tip of an optical fiber bundle.
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Affiliation(s)
- Rémi Courson
- LAAS-CNRS, Université de Toulouse, CNRS, 31400 Toulouse, France
| | - Oleksii Bratash
- Université Grenoble Alpes, CNRS, CEA, IRIG, SyMMES, 38000 Grenoble, France
| | - Ali Maziz
- LAAS-CNRS, Université de Toulouse, CNRS, 31400 Toulouse, France
| | - Cloé Desmet
- Université Grenoble Alpes, CNRS, CEA, IRIG, SyMMES, 38000 Grenoble, France
| | | | - Loïc Leroy
- Université Grenoble Alpes, CNRS, CEA, IRIG, SyMMES, 38000 Grenoble, France
| | - Elodie Engel
- Université Grenoble Alpes, CNRS, CEA, IRIG, SyMMES, 38000 Grenoble, France
| | - Arnaud Buhot
- Université Grenoble Alpes, CNRS, CEA, IRIG, SyMMES, 38000 Grenoble, France
| | | | - Thierry Leïchlé
- LAAS-CNRS, Université de Toulouse, CNRS, 31400 Toulouse, France
- Georgia Tech−CNRS International Research Laboratory, Atlanta, GA 30332 USA
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Multiplexed Remote SPR Detection of Biological Interactions through Optical Fiber Bundles. SENSORS 2020; 20:s20020511. [PMID: 31963277 PMCID: PMC7014493 DOI: 10.3390/s20020511] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/08/2020] [Accepted: 01/14/2020] [Indexed: 02/04/2023]
Abstract
The development of sensitive methods for in situ detection of biomarkers is a real challenge to bring medical diagnosis a step forward. The proof-of-concept of a remote multiplexed biomolecular interaction detection through a plasmonic optical fiber bundle is demonstrated here. The strategy relies on a fiber optic biosensor designed from a 300 µm diameter bundle composed of 6000 individual optical fibers. When appropriately etched and metallized, each optical fiber exhibits specific plasmonic properties. The surface plasmon resonance phenomenon occurring at the surface of each fiber enables to measure biomolecular interactions, through the changes of the retro-reflected light intensity due to light/plasmon coupling variations. The functionalization of the microstructured bundle by multiple protein probes was performed using new polymeric 3D-printed microcantilevers. Such soft cantilevers allow for immobilizing the probes in micro spots, without damaging the optical microstructures nor the gold layer. We show here the potential of this device to perform the multiplexed detection of two different antibodies with limits of detection down to a few tenths of nanomoles per liter. This tool, adapted for multiparametric, real-time, and label free monitoring is minimally invasive and could then provide a useful platform for in vivo targeted molecular analysis.
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Cacheux J, Bancaud A, Leichlé T, Cordelier P. Technological Challenges and Future Issues for the Detection of Circulating MicroRNAs in Patients With Cancer. Front Chem 2019; 7:815. [PMID: 31850308 PMCID: PMC6894013 DOI: 10.3389/fchem.2019.00815] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/11/2019] [Indexed: 12/21/2022] Open
Abstract
In the era of precision medicine, the success of clinical trials, notably for patients diagnosed with cancer, strongly relies on biomarkers with pristine clinical value but also on robust and versatile analytical technologies to ensure proper patients' stratification and treatment. In this review, we will first address whether plasmatic and salivary microRNAs can be considered as a reliable source of biomarkers for cancer diagnosis and prognosis. We will then discuss the pre-analytical steps preceding miRNA quantification (from isolation to purification), and how such process could be biased and time-consuming. Next, we will review the most recent tools derived from micro- and nano-technologies for microRNA detection available to date and how they may compete with current standards. This review will prioritize publications using relevant biological samples. The significance of various physical transduction schemes (mechanical, optical, electrical, etc.) for biological detection will be compared, and pros and cons of each method will be widely discussed. Finally, we will debate on how micro and nanotechnologies could widespread the use of biomarkers in modern medicine, to help manage patients with serious diseases such as cancer.
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Affiliation(s)
- Jean Cacheux
- LAAS-CNRS, Université de Toulouse, CNRS, Toulouse, France.,Université Fédérale de Toulouse Midi-Pyrénées, Université Toulouse III Paul Sabatier, CRCT, Toulouse, France
| | | | | | - Pierre Cordelier
- Université Fédérale de Toulouse Midi-Pyrénées, Université Toulouse III Paul Sabatier, CRCT, Toulouse, France
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Miniaturization of multiplexed planar recombinant antibody arrays for serum protein profiling. Bioanalysis 2015; 6:1175-85. [PMID: 24946919 DOI: 10.4155/bio.13.342] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Antibody-based microarrays are a developing tool for high-throughput proteomics in health and disease. However, in order to enable global proteome profiling, novel miniaturized high-density antibody array formats must be developed. RESULTS In this proof-of-concept study, we have designed a miniaturized planar recombinant (single-chain Fragment variable). antibody array technology platform for multiplexed profiling of non-fractionated, directly labelled serum samples. The size of the individual spot features was reduced 225-times (78.5 μm(2)/spot) and the array density was increased 19-times (38,000 spots/cm(2)). These miniaturized, multiplexed arrays were produced, using a desktop nanofabrication system based on dip-pen nanolithography technology, and interfaced with a high-resolution fluorescent-based scanner. The reproducibility, sensitivity, specificity, and applicability of the set-up were demonstrated by profiling a set of well-characterized serum samples. CONCLUSION The designed antibody array platform opens up new possibilities for large-scale, multiplex profiling of crude proteomes in a miniaturized fashion.
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Petersson L, Berthet Duroure N, Auger A, Dexlin-Mellby L, Borrebaeck CA, Ait Ikhlef A, Wingren C. Generation of miniaturized planar ecombinant antibody arrays using a microcantilever-based printer. NANOTECHNOLOGY 2014; 25:275104. [PMID: 24960426 DOI: 10.1088/0957-4484/25/27/275104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Miniaturized (Ø 10 μm), multiplexed (>5-plex), and high-density (>100 000 spots cm(-2)) antibody arrays will play a key role in generating protein expression profiles in health and disease. However, producing such antibody arrays is challenging, and it is the type and range of available spotters which set the stage. This pilot study explored the use of a novel microspotting tool, Bioplume(TM)-consisting of an array of micromachined silicon cantilevers with integrated microfluidic channels-to produce miniaturized, multiplexed, and high-density planar recombinant antibody arrays for protein expression profiling which targets crude, directly labelled serum. The results demonstrated that 16-plex recombinant antibody arrays could be produced-based on miniaturized spot features (78.5 um(2), Ø 10 μm) at a 7-125-times increased spot density (250 000 spots cm(-2)), interfaced with a fluorescent-based read-out. This prototype platform was found to display adequate reproducibility (spot-to-spot) and an assay sensitivity in the pM range. The feasibility of the array platform for serum protein profiling was outlined.
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Affiliation(s)
- Linn Petersson
- Department of Immunotechnology, Lund University, Medicon Village, SE-22381 Lund, Sweden. CREATE Health, Lund University, Medicon Village, SE-22381 Lund, Sweden
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Petersson L, Dexlin-Mellby L, Bengtsson AA, Sturfelt G, Borrebaeck CAK, Wingren C. Multiplexing of miniaturized planar antibody arrays for serum protein profiling--a biomarker discovery in SLE nephritis. LAB ON A CHIP 2014; 14:1931-1942. [PMID: 24763547 DOI: 10.1039/c3lc51420j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the quest to decipher disease-associated biomarkers, miniaturized and multiplexed antibody arrays may play a central role in generating protein expression profiles, or protein maps, of crude serum samples. In this conceptual study, we explored a novel, 4-times larger pen design, enabling us to, in a unique manner, simultaneously print 48 different reagents (antibodies) as individual 78.5 μm(2) (10 μm in diameter) sized spots at a density of 38,000 spots cm(-2) using dip-pen nanolithography technology. The antibody array set-up was interfaced with a high-resolution fluorescent-based scanner for sensitive sensing. The performance and applicability of this novel 48-plex recombinant antibody array platform design was demonstrated in a first clinical application targeting SLE nephritis, a severe chronic autoimmune connective tissue disorder, as the model disease. To this end, crude, directly biotinylated serum samples were targeted. The results showed that the miniaturized and multiplexed array platform displayed adequate performance, and that SLE-associated serum biomarker panels reflecting the disease process could be deciphered, outlining the use of miniaturized antibody arrays for disease proteomics and biomarker discovery.
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Affiliation(s)
- Linn Petersson
- Dept. of Immunotechnology and CREATE Health, Medicon Village, Lund University, Medicon Village, Building no. 406, SE-22381 Lund, Sweden.
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Renaudot R, Agache V, Fouillet Y, Laffite G, Bisceglia E, Jalabert L, Kumemura M, Collard D, Fujita H. A programmable and reconfigurable microfluidic chip. LAB ON A CHIP 2013; 13:4517-24. [PMID: 24154859 DOI: 10.1039/c3lc50850a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This article reports an original concept enabling the rapid fabrication of continuous-flow microfluidic chips with a programmable and reconfigurable geometry. The concept is based on a digital microfluidic platform featuring an array of individually addressable electrodes. A selection of electrodes is switched on sequentially to create a de-ionized (DI) water finger specific pattern, while the surrounding medium consists of liquid-phase paraffin. The water displacement is induced by both electrowetting on dielectric and liquid dielectrophoresis phenomena. Once the targeted DI water pattern is obtained, the chip temperature is lowered by turning on an integrated thermoelectric cooler, forming channel structures made of solidified paraffin with edges delimitated by the DI water pattern. As a result, the chip can be used afterwards to conduct in-flow continuous microfluidic experiments. This process is resettable and reversible by heating up the chip to melt the paraffin and reconfigure the microchannel design on demand, offering the advantages of cost, adaptability, and robustness. This paper reports experimental results describing the overall concept, which is illustrated with typical and basic fluidic geometries.
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Kim SH, Yoshizawa S, Takeuchi S, Fujii T, Fourmy D. Ultra-high density protein spots achieved by on chip digitalized protein synthesis. Analyst 2013; 138:4663-9. [DOI: 10.1039/c3an00976a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Renaudot R, Nguyen T, Fouillet Y, Jary D, Kumemura M, Jalabert L, Collard D, Fujita H, Agache V. Alternative method for local surface functionalization using liquid dielectrophoresis: An application with polyethyleneimine polymer for bacteria trapping onto a surface. RSC Adv 2013. [DOI: 10.1039/c3ra40700d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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Oita I, Halewyck H, Thys B, Rombaut B, Vander Heyden Y, Mangelings D. Microfluidics in macro-biomolecules analysis: macro inside in a nano world. Anal Bioanal Chem 2010; 398:239-64. [PMID: 20549494 PMCID: PMC7079953 DOI: 10.1007/s00216-010-3857-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2010] [Revised: 05/13/2010] [Accepted: 05/18/2010] [Indexed: 12/26/2022]
Abstract
Use of microfluidic devices in the life sciences and medicine has created the possibility of performing investigations at the molecular level. Moreover, microfluidic devices are also part of the technological framework that has enabled a new type of scientific information to be revealed, i.e. that based on intensive screening of complete sets of gene and protein sequences. A deeper bioanalytical perspective may provide quantitative and qualitative tools, enabling study of various diseases and, eventually, may offer support for the development of accurate and reliable methods for clinical assessment. This would open the way to molecule-based diagnostics, i.e. establish accurate diagnosis and disease prognosis based on identification and/or quantification of biomacromolecules, for example proteins or nucleic acids. Finally, the development of disposable and portable devices for molecule-based diagnosis would provide the perfect translation of the science behind life-science research into practical applications dedicated to patients and health practitioners. This review provides an analytical perspective of the impact of microfluidics on the detection and characterization of bio-macromolecules involved in pathological processes. The main features of molecule-based diagnostics and the specific requirements for the diagnostic devices are discussed. Further, the techniques currently used for testing bio-macromolecules for potential diagnostic purposes are identified, emphasizing the newest developments. Subsequently, the challenges of this type of application and the status of commercially available devices are highlighted, and future trends are noted.
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Affiliation(s)
- Iuliana Oita
- Department of Analytical Chemistry and Pharmaceutical Technology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, Brussels, 1090 Belgium
| | - Hadewych Halewyck
- Department of Pharmaceutical Biotechnology & Molecular Biology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, Brussels, 1090 Belgium
| | - Bert Thys
- Department of Pharmaceutical Biotechnology & Molecular Biology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, Brussels, 1090 Belgium
| | - Bart Rombaut
- Department of Pharmaceutical Biotechnology & Molecular Biology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, Brussels, 1090 Belgium
| | - Yvan Vander Heyden
- Department of Analytical Chemistry and Pharmaceutical Technology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, Brussels, 1090 Belgium
| | - Debby Mangelings
- Department of Analytical Chemistry and Pharmaceutical Technology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, Brussels, 1090 Belgium
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