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Reginka M, Hoang H, Efendi Ö, Merkel M, Huhnstock R, Holzinger D, Dingel K, Sick B, Bertinetti D, Herberg FW, Ehresmann A. Transport Efficiency of Biofunctionalized Magnetic Particles Tailored by Surfactant Concentration. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8498-8507. [PMID: 34231364 DOI: 10.1021/acs.langmuir.1c00900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Controlled transport of surface-functionalized magnetic beads in a liquid medium is a central requirement for the handling of captured biomolecular targets in microfluidic lab-on-chip biosensors. Here, the influence of the physiological liquid medium on the transport characteristics of functionalized magnetic particles and on the functionality of the coupled protein is studied. These aspects are theoretically modeled and experimentally investigated for prototype superparamagnetic beads, surface-functionalized with green fluorescent protein immersed in buffer solution with different concentrations of a surfactant. The model reports on the tunability of the steady-state particle substrate separation distance to prevent their surface sticking via the choice of surfactant concentration. Experimental and theoretical average velocities are discussed for a ratchet-like particle motion induced by a dynamic external field superposed on a static locally varying magnetic field landscape. The developed model and experiment may serve as a basis for quantitative forecasts on the functionality of magnetic particle transport-based lab-on-chip devices.
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Affiliation(s)
- Meike Reginka
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
- Artificial Intelligence Methods for Experiment Design (AIM-ED), Joint Lab Helmholtzzentrum für Materialien und Energie, Berlin (HZB) and Kassel University, cc Gregor Hartmann, Hahn-Meitner Platz 1, 14109 Berlin, Germany
| | - Hai Hoang
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
| | - Özge Efendi
- Institute of Biology and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
| | - Maximilian Merkel
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
- Artificial Intelligence Methods for Experiment Design (AIM-ED), Joint Lab Helmholtzzentrum für Materialien und Energie, Berlin (HZB) and Kassel University, cc Gregor Hartmann, Hahn-Meitner Platz 1, 14109 Berlin, Germany
| | - Rico Huhnstock
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
- Artificial Intelligence Methods for Experiment Design (AIM-ED), Joint Lab Helmholtzzentrum für Materialien und Energie, Berlin (HZB) and Kassel University, cc Gregor Hartmann, Hahn-Meitner Platz 1, 14109 Berlin, Germany
| | - Dennis Holzinger
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
| | - Kristina Dingel
- Artificial Intelligence Methods for Experiment Design (AIM-ED), Joint Lab Helmholtzzentrum für Materialien und Energie, Berlin (HZB) and Kassel University, cc Gregor Hartmann, Hahn-Meitner Platz 1, 14109 Berlin, Germany
- Intelligent Embedded Systems, University of Kassel, Wilhelmshöher Allee 71-73, D-34121 Kassel, Germany
| | - Bernhard Sick
- Artificial Intelligence Methods for Experiment Design (AIM-ED), Joint Lab Helmholtzzentrum für Materialien und Energie, Berlin (HZB) and Kassel University, cc Gregor Hartmann, Hahn-Meitner Platz 1, 14109 Berlin, Germany
- Intelligent Embedded Systems, University of Kassel, Wilhelmshöher Allee 71-73, D-34121 Kassel, Germany
| | - Daniela Bertinetti
- Institute of Biology and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
| | - Friedrich W Herberg
- Institute of Biology and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
| | - Arno Ehresmann
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel, Germany
- Artificial Intelligence Methods for Experiment Design (AIM-ED), Joint Lab Helmholtzzentrum für Materialien und Energie, Berlin (HZB) and Kassel University, cc Gregor Hartmann, Hahn-Meitner Platz 1, 14109 Berlin, Germany
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Trewin AJ, Bahr LL, Almast A, Berry BJ, Wei AY, Foster TH, Wojtovich AP. Mitochondrial Reactive Oxygen Species Generated at the Complex-II Matrix or Intermembrane Space Microdomain Have Distinct Effects on Redox Signaling and Stress Sensitivity in Caenorhabditis elegans. Antioxid Redox Signal 2019; 31:594-607. [PMID: 30887829 PMCID: PMC6657295 DOI: 10.1089/ars.2018.7681] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Aims: How mitochondrial reactive oxygen species (ROS) impact physiological function may depend on the quantity of ROS generated or removed, and the subcellular microdomain in which this occurs. However, pharmacological tools currently available to alter ROS production in vivo lack precise spatial and temporal control. Results: We used CRISPR/Cas9 to fuse the light-sensitive ROS-generating protein, SuperNova to the C-terminus of mitochondrial complex II succinate dehydrogenase subunits B (SDHB-1::SuperNova) and C (SDHC-1::SuperNova) in Caenorhabditis elegans to localize SuperNova to the matrix-side of the inner mitochondrial membrane, and to the intermembrane space (IMS), respectively. The presence of the SuperNova protein did not impact complex II activity, mitochondrial respiration, or C. elegans development rate under dark conditions. ROS production by SuperNova protein in vitro in the form of superoxide (O2˙-) was both specific and proportional to total light irradiance in the 540-590 nm spectra, and was unaffected by varying the buffer pH to resemble the mitochondrial matrix or IMS environments. We then determined using SuperNova whether stoichiometric ROS generation in the mitochondrial matrix or IMS had distinct effects on redox signaling in vivo. Phosphorylation of PMK-1 (a p38 MAPK homolog) and transcriptional activity of SKN-1 (an Nrf2 homolog) were each dependent on both the site and duration of ROS production, with matrix-generated ROS having more prominent effects. Furthermore, matrix- but not IMS-generated ROS attenuated susceptibility to simulated ischemia reperfusion injury in C. elegans. Innovation and Conclusion: Overall, these data demonstrate that the physiological output of ROS depends on the microdomain in which it is produced. Antioxid. Redox Signal. 31, 594-607.
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Affiliation(s)
- Adam J Trewin
- 1Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, New York
| | - Laura L Bahr
- 1Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, New York
| | - Anmol Almast
- 1Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, New York
| | - Brandon J Berry
- 1Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, New York.,2Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, New York
| | - Alicia Y Wei
- 1Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, New York
| | - Thomas H Foster
- 3Department of Imaging Sciences, University of Rochester Medical Center, Rochester, New York
| | - Andrew P Wojtovich
- 1Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, New York.,2Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, New York
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