|
1
|
Moderne M, Abrao-Nemeir I, Meyer N, Du J, Charles-Achille S, Janot JM, Torrent J, Lepoitevin M, Balme S. Combining iontronic, chromatography and nanopipette for Aβ42 aggregates detection and separation. Anal Chim Acta 2023; 1275:341587. [PMID: 37524475 DOI: 10.1016/j.aca.2023.341587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/13/2023] [Accepted: 07/04/2023] [Indexed: 08/02/2023]
Abstract
In this work, we aim to capture, detect and analysis at single molecule level Aβ42 aggregates. To this end, two strategies of track-etched nanopore membranes functionalization were investigated. The first one uses an aptamer and requires only three steps, whereas the second strategy uses Lecanemab antibodies and requires six steps. Out of the two presented strategies, the second one was found to be the most suitable to detect Aβ42 aggregates using a quick current-voltage readout. The resulting single nanopore was then upscale to multipore membranes to capture the Aβ42 aggregates before analysis through them through a single-molecule approach. By comparing the species present in the retentate and filtrate, we confirmed the membrane's affinity for the larger Aβ42 aggregates present in the sample. We found that chromatographic membranes combined with an ionic diode for binary on/off readout are powerful tools for detecting rare biomarkers before single molecule analysis.
Collapse
Affiliation(s)
- Mathilde Moderne
- Institut Européen des Membranes, UMR5635 University of Montpellier ENCSM CNRS, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Imad Abrao-Nemeir
- Institut Européen des Membranes, UMR5635 University of Montpellier ENCSM CNRS, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Nathan Meyer
- Institut Européen des Membranes, UMR5635 University of Montpellier ENCSM CNRS, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France; INM, University of Montpellier, INSERM, Montpellier, France
| | - Jun Du
- Institut Européen des Membranes, UMR5635 University of Montpellier ENCSM CNRS, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Saly Charles-Achille
- Institut Européen des Membranes, UMR5635 University of Montpellier ENCSM CNRS, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Jean-Marc Janot
- Institut Européen des Membranes, UMR5635 University of Montpellier ENCSM CNRS, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Joan Torrent
- INM, University of Montpellier, INSERM, Montpellier, France
| | - Mathilde Lepoitevin
- Institut des Matériaux Poreux de Paris (IMAP), UMR 8004 CNRS, Ecole Normale Supérieure de Paris, Ecole Supérieure de Physique et de Chimie Industrielles de Paris, PSL Université, 75005, Paris, France
| | - Sebastien Balme
- Institut Européen des Membranes, UMR5635 University of Montpellier ENCSM CNRS, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France.
| |
Collapse
|
|
2
|
Saito M, Zako T, Takahashi R, Shimazaki Y. Inhibition of Amyloid β Protein Fibrillation via Carboxypeptidase Y after Protein Trapping Using Immunoaffinity Membranes. CHEM LETT 2016. [DOI: 10.1246/cl.160613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
|
3
|
Shimazaki Y, Takatsu Y. Combined Method of Immunoaffinity Membrane Within Tubes and MALDI-TOF MS for Capturing and Analyzing Amyloid Beta. Appl Biochem Biotechnol 2015; 177:1565-71. [DOI: 10.1007/s12010-015-1837-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 09/07/2015] [Indexed: 12/20/2022]
|