1
|
Mohamadi MR, Verpillot R, Taverna M, Otto M, Viovy JL. "Microchip Electrophoresis," with Respect to "Profiling of Aβ Peptides in the Cerebrospinal Fluid of Patients with Alzheimer's Disease". Methods Mol Biol 2019; 1855:327-340. [PMID: 30426429 DOI: 10.1007/978-1-4939-8793-1_28] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Aggregation of beta-amyloid peptides especially Aβ1-42 in amyloid plaques is one of the major neuropathological events in Alzheimer's disease. This event is normally accompanied by a relative reduction of the concentration of Aβ1-42 in the cerebrospinal fluid (CSF) of patient developing the signs of Alzheimer's disease. Here, we describe methods for isolation and for microchip gel electrophoresis of Aβ peptides in polydimethylsiloxane (PDMS) microfluidic chip. The method was applied to compare the relative concentration of Aβ1-42 with other Aβ peptides, for example, Aβ 1-40 in CSF. In order to increase the sensitivity of detection, Aβ peptides in the CSF samples were first captured and concentrated using magnetic beads coated with specific anti-Aβ antibodies.
Collapse
Affiliation(s)
- Mohamad Reza Mohamadi
- Laboratoire Physico Chimie Curie, Institut Curie, PSL Research University, CNRS UMR168, Paris cedex 05, France
| | - Romain Verpillot
- PNAS, Institut Galien de Paris-Sud, Faculté de Pharmacie, Université Paris-Sud, CNRS UMR8612, 5 rue JB Clément, Chatenay Malabry, France
| | - Myriam Taverna
- PNAS, Institut Galien de Paris-Sud, Faculté de Pharmacie, Université Paris-Sud, CNRS UMR8612, 5 rue JB Clément, Chatenay Malabry, France
| | - Markus Otto
- Department of Neurology, University of Ulm, Ulm, Germany
| | - Jean-Louis Viovy
- Laboratoire Physico Chimie Curie, Institut Curie, PSL Research University, CNRS UMR168, Paris cedex 05, France.
| |
Collapse
|
3
|
Mohamadi RM, Svobodova Z, Bilkova Z, Otto M, Taverna M, Descroix S, Viovy JL. An integrated microfluidic chip for immunocapture, preconcentration and separation of β-amyloid peptides. BIOMICROFLUIDICS 2015; 9:054117. [PMID: 26487903 PMCID: PMC4592438 DOI: 10.1063/1.4931394] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 09/07/2015] [Indexed: 05/24/2023]
Abstract
We present an integrated microfluidic chip for detection of β-amyloid (Aβ) peptides. Aβ peptides are major biomarkers for the diagnosis of Alzheimer's disease (AD) in its early stages. This microfluidic device consists of three main parts: (1) An immunocapture microcolumn based on self-assembled magnetic beads coated with antibodies specific to Aβ peptides, (2) a nano-porous membrane made of photopolymerized hydrogel for preconcentration, and (3) a microchip electrophoresis (MCE) channel with fluorescent detection. Sub-milliliter sample volume is either mixed off-chip with antibody coated magnetic beads and injected into the device or is injected into an already self-assembled column of magnetic beads in the microchannel. The captured peptides on the beads are then electrokinetically eluted and re-concentrated onto the nano-membrane in a few nano-liters. By integrating the nano-membrane, total assay time was reduced and also off-chip re-concentration or buffer exchange steps were not needed. Finally, the concentrated peptides in the chip are separated by electrophoresis in a polymer-based matrix. The device was applied to the capture and MCE analysis of differently truncated peptides Aβ (1-37, 1-39, 1-40, and 1-42) and was able to detect as low as 25 ng of synthetic Aβ peptides spiked in undiluted cerebrospinal fluid (CSF). The device was also tested with CSF samples from healthy donors. CSF samples were fluorescently labelled and pre-mixed with the magnetic beads and injected into the device. The results indicated that Aβ1-40, an important biomarker for distinguishing patients with frontotemporal lobe dementia from controls and AD patients, was detectable. Although the sensitivity of this device is not yet enough to detect all Aβ subtypes in CSF, this is the first report on an integrated or semi-integrated device for capturing and analyzing of differently truncated Aβ peptides. The method is less demanding and faster than the conventional Western blotting method currently used for research.
Collapse
Affiliation(s)
- Reza M Mohamadi
- Curie Institute/CNRS/Université Pierre et Marie Curie , UMR 168, Paris, France
| | - Zuzana Svobodova
- Department of Biological and Biochemical Sciences, University of Pardubice , 53210 Pardubice, Czech Republic
| | - Zuzana Bilkova
- Department of Biological and Biochemical Sciences, University of Pardubice , 53210 Pardubice, Czech Republic
| | - Markus Otto
- Department of Neurology, University of Ulm , Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Myriam Taverna
- Faculté de Pharmacie, Institut Galien Paris Sud, University of Paris Sud , UMR 8612, Chatenay Malabry, France
| | - Stephanie Descroix
- Curie Institute/CNRS/Université Pierre et Marie Curie , UMR 168, Paris, France
| | - Jean-Louis Viovy
- Curie Institute/CNRS/Université Pierre et Marie Curie , UMR 168, Paris, France
| |
Collapse
|
12
|
Mohamadi MR, Svobodova Z, Verpillot R, Esselmann H, Wiltfang J, Otto M, Taverna M, Bilkova Z, Viovy JL. Microchip Electrophoresis Profiling of Aβ Peptides in the Cerebrospinal Fluid of Patients with Alzheimer’s Disease. Anal Chem 2010; 82:7611-7. [DOI: 10.1021/ac101337n] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mohamad Reza Mohamadi
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Zuzana Svobodova
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Romain Verpillot
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Hermann Esselmann
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Jens Wiltfang
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Markus Otto
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Myriam Taverna
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Zuzana Bilkova
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| | - Jean-Louis Viovy
- UMR 168, Curie Institute/CNRS/Université Pierre et Marie Curie, Paris, France, Department of Biological and Biochemical Sciences, University of Pardubice, 53210 Pardubice, Czech Republic, Faculté de Pharmacie, UMR 8612-LPNSS, University of Paris sud 11, Chatenay Malabry, France, Department of Psychiatry and Psychotherapy, LVR-Hospital, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany, and Department of Neurology, University of Ulm, Steinhövelstrasse 1, 89075 Ulm, Germany
| |
Collapse
|
17
|
Mohamadi MR, Kaji N, Tokeshi M, Baba Y. Dynamic Cross-Linking Effect of Mg2+ To Enhance Sieving Properties of Low-Viscosity Poly(vinylpyrrolidone) Solutions for Microchip Electrophoresis of Proteins. Anal Chem 2007; 80:312-6. [DOI: 10.1021/ac701974u] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mohamad Reza Mohamadi
- Department of Applied Chemistry, Graduate School of Engineering, Venture Business Laboratory (VBL), MEXT Innovative Research Center for Preventive Medical Engineering, Plasma Nanotechnology Research Center, Nagoya University, Nagoya 464-8603, Japan, Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu 761-0395, Japan, and Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - Noritada Kaji
- Department of Applied Chemistry, Graduate School of Engineering, Venture Business Laboratory (VBL), MEXT Innovative Research Center for Preventive Medical Engineering, Plasma Nanotechnology Research Center, Nagoya University, Nagoya 464-8603, Japan, Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu 761-0395, Japan, and Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - Manabu Tokeshi
- Department of Applied Chemistry, Graduate School of Engineering, Venture Business Laboratory (VBL), MEXT Innovative Research Center for Preventive Medical Engineering, Plasma Nanotechnology Research Center, Nagoya University, Nagoya 464-8603, Japan, Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu 761-0395, Japan, and Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - Yoshinobu Baba
- Department of Applied Chemistry, Graduate School of Engineering, Venture Business Laboratory (VBL), MEXT Innovative Research Center for Preventive Medical Engineering, Plasma Nanotechnology Research Center, Nagoya University, Nagoya 464-8603, Japan, Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu 761-0395, Japan, and Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| |
Collapse
|