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Zhang Y, Li K, Zhao Y, Shi W, Iyer H, Kim S, Brenden C, Sweedler JV, Vlasov Y. Attomole-Level Multiplexed Detection of Neurochemicals in Picoliter Droplets by On-Chip Nanoelectrospray Ionization Coupled to Mass Spectrometry. Anal Chem 2022; 94:13804-13809. [PMID: 36166829 PMCID: PMC9558086 DOI: 10.1021/acs.analchem.2c02323] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
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While droplet microfluidics is becoming an effective
tool for biomedical research,
sensitive detection of droplet content is still challenging, especially
for multiplexed analytes compartmentalized within ultrasmall droplets
down to picoliter volumes. To enable such measurements, we demonstrate
a silicon-based integrated microfluidic platform for multiplexed analysis
of neurochemicals in picoliter droplets via nanoelectrospray ionization
(nESI)-mass spectrometry (MS). An integrated silicon microfluidic
chip comprising downscaled 7 μm-radius channels, a compact T-junction
for droplet generation, and an integrated nESI emitter tip is used
for segmentation of analytes into picoliter compartments and their
efficient delivery for subsequent MS detection. The developed system
demonstrates effective detection of multiple neurochemicals encapsulated
within oil-isolated plugs down to low picoliter volumes. Quantitative
measurements for each neurochemical demonstrate limits of detection
at the attomole level. Such results are promising for applications
involving label-free and small-volume detection for monitoring a range
of brain chemicals.
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Affiliation(s)
- Yan Zhang
- Department of Electrical and Computer Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Keyin Li
- Department of Chemistry and the Beckman Institute, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Yaoyao Zhao
- Department of Chemistry and the Beckman Institute, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Weihua Shi
- Department of Electrical and Computer Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Hrishikesh Iyer
- Department of Electrical and Computer Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Sungho Kim
- Department of Electrical and Computer Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Christopher Brenden
- Department of Bioengineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Jonathan V Sweedler
- Department of Chemistry and the Beckman Institute, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Yurii Vlasov
- Department of Electrical and Computer Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States.,Department of Bioengineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
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Hassan SU, Morgan H, Zhang X, Niu X. Droplet Interfaced Parallel and Quantitative Microfluidic-Based Separations. Anal Chem 2015; 87:3895-901. [DOI: 10.1021/ac504695w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sammer-ul Hassan
- Faculty
of Engineering and the Environment, University of Southampton, Southampton, U.K. SO17 1BJ
| | - Hywel Morgan
- Faculty
of Physical Sciences and Engineering, University of Southampton, Southampton, U.K. SO17 1BJ
- Institute
for Life Sciences, University of Southampton, Southampton, U.K. SO17 1BJ
| | - Xunli Zhang
- Faculty
of Engineering and the Environment, University of Southampton, Southampton, U.K. SO17 1BJ
- Institute
for Life Sciences, University of Southampton, Southampton, U.K. SO17 1BJ
| | - Xize Niu
- Faculty
of Engineering and the Environment, University of Southampton, Southampton, U.K. SO17 1BJ
- Institute
for Life Sciences, University of Southampton, Southampton, U.K. SO17 1BJ
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Rokhas MK, Mikkonen S, Beyer J, Jacksén J, Emmer Å. CE analysis of single wood cells performing hydrolysis and preconcentration in open microchannels. Electrophoresis 2013; 35:450-7. [DOI: 10.1002/elps.201300408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 10/17/2013] [Accepted: 10/21/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Maria Khihon Rokhas
- Analytical Chemistry; Division of Applied Physical Chemistry; Department of Chemistry; School of Chemical Science and Engineering; KTH Royal Institute of Technology; Stockholm Sweden
| | - Saara Mikkonen
- Analytical Chemistry; Division of Applied Physical Chemistry; Department of Chemistry; School of Chemical Science and Engineering; KTH Royal Institute of Technology; Stockholm Sweden
| | - Juliane Beyer
- B CUBE - Center for Molecular Bioengineering; Technische Universität Dresden; Dresden Germany
| | - Johan Jacksén
- Analytical Chemistry; Division of Applied Physical Chemistry; Department of Chemistry; School of Chemical Science and Engineering; KTH Royal Institute of Technology; Stockholm Sweden
| | - Åsa Emmer
- Analytical Chemistry; Division of Applied Physical Chemistry; Department of Chemistry; School of Chemical Science and Engineering; KTH Royal Institute of Technology; Stockholm Sweden
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4
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Affiliation(s)
- Fatemeh Eslami
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton AB, Canada T6G 2V4
| | - Janet A. W. Elliott
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton AB, Canada T6G 2V4
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Kuo JS, Chiu DT. Controlling mass transport in microfluidic devices. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2011; 4:275-96. [PMID: 21456968 PMCID: PMC5724977 DOI: 10.1146/annurev-anchem-061010-113926] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Microfluidic platforms offer exquisite capabilities in controlling mass transport for biological studies. In this review, we focus on recent developments in manipulating chemical concentrations at the microscale. Some techniques prevent or accelerate mixing, whereas others shape the concentration gradients of chemical and biological molecules. We also highlight several in vitro biological studies in the areas of organ engineering, cancer, and blood coagulation that have benefited from accurate control of mass transfer.
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Affiliation(s)
- Jason S Kuo
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, USA
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Stevenson DJ, Gunn-Moore F, Dholakia K. Light forces the pace: optical manipulation for biophotonics. JOURNAL OF BIOMEDICAL OPTICS 2010; 15:041503. [PMID: 20799781 DOI: 10.1117/1.3475958] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The biomedical sciences have benefited immensely from photonics technologies in the last 50 years. This includes the application of minute forces that enable the trapping and manipulation of cells and single molecules. In terms of the area of biophotonics, optical manipulation has made a seminal contribution to our understanding of the dynamics of single molecules and the microrheology of cells. Here we present a review of optical manipulation, emphasizing its impact on the areas of single-molecule studies and single-cell biology, and indicating some of the key experiments in the fields.
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Affiliation(s)
- David James Stevenson
- University of St Andrews, Scottish Universities Physics Alliance, School of Physics and Astronomy, North Haugh, Fife, United Kingdom.
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Abstract
By using methods that permit the generation and manipulation of ultrasmall-volume droplets, researchers are pushing the boundaries of ultrasensitive chemical analyses. (To listen to a podcast about this feature, please go to the Analytical Chemistry Web site at pubs.acs.org/ancham.).
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Quinto-Su PA, Lai HH, Yoon HH, Sims CE, Allbritton NL, Venugopalan V. Examination of laser microbeam cell lysis in a PDMS microfluidic channel using time-resolved imaging. LAB ON A CHIP 2008; 8:408-14. [PMID: 18305858 PMCID: PMC2525503 DOI: 10.1039/b715708h] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
We use time-resolved imaging to examine the lysis dynamics of non-adherent BAF-3 cells within a microfluidic channel produced by the delivery of single highly-focused 540 ps duration laser pulses at lambda = 532 nm. Time-resolved bright-field images reveal that the delivery of the pulsed laser microbeam results in the formation of a laser-induced plasma followed by shock wave emission and cavitation bubble formation. The confinement offered by the microfluidic channel constrains substantially the cavitation bubble expansion and results in significant deformation of the PDMS channel walls. To examine the cell lysis and dispersal of the cellular contents, we acquire time-resolved fluorescence images of the process in which the cells were loaded with a fluorescent dye. These fluorescence images reveal cell lysis to occur on the nanosecond to microsecond time scale by the plasma formation and cavitation bubble dynamics. Moreover, the time-resolved fluorescence images show that while the cellular contents are dispersed by the expansion of the laser-induced cavitation bubble, the flow associated with the bubble collapse subsequently re-localizes the cellular contents to a small region. This capacity of pulsed laser microbeam irradiation to achieve rapid cell lysis in microfluidic channels with minimal dilution of the cellular contents has important implications for their use in lab-on-a-chip applications.
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Affiliation(s)
- Pedro A. Quinto-Su
- Department of Chemical Engineering & Materials Science, University of California, 916 Engineering Tower, Irvine, Irvine, CA, 92697, USA. E-mail: ; Fax: +1 (949) 824-2541; Tel: +1 (949) 824-5802
- Laser Microbeam and Medical Program, Beckman Laser Institute and Medical Clinic, University of California, Irvine, Irvine, CA, 92612, USA
| | - Hsuan-Hong Lai
- Department of Electrical Engineering & Computer Science, University of California, Irvine, Irvine, CA, 92697, USA
| | - Helen H. Yoon
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Christopher E. Sims
- Department of Chemistry, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Nancy L. Allbritton
- Department of Chemistry, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Vasan Venugopalan
- Department of Chemical Engineering & Materials Science, University of California, 916 Engineering Tower, Irvine, Irvine, CA, 92697, USA. E-mail: ; Fax: +1 (949) 824-2541; Tel: +1 (949) 824-5802
- Laser Microbeam and Medical Program, Beckman Laser Institute and Medical Clinic, University of California, Irvine, Irvine, CA, 92612, USA
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Affiliation(s)
- Daniel T Chiu
- Department of Chemistry, University of Washington, Seattle, WA 98195-1700, USA.
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Arcibal IG, Santillo MF, Ewing AG. Recent advances in capillary electrophoretic analysis of individual cells. Anal Bioanal Chem 2006; 387:51-7. [PMID: 16912862 PMCID: PMC2211411 DOI: 10.1007/s00216-006-0690-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2006] [Revised: 07/04/2006] [Accepted: 07/17/2006] [Indexed: 10/24/2022]
Abstract
Because variability exists within populations of cells, single-cell analysis has become increasingly important for probing complex cellular environments. Capillary electrophoresis (CE) is an excellent technique for identifying and quantifying the contents of single cells owing to its small volume requirements and fast, efficient separations with highly sensitive detection. Recent progress in both whole-cell and subcellular sampling has allowed researchers to study cellular function in the areas of neuroscience, oncology, enzymology, immunology, and gene expression.
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Affiliation(s)
- Imee G Arcibal
- Department of Chemistry, Pennsylvania State University, University Park, PA, USA
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