1
|
Kekic M, Hanson KL, Perumal AS, Solana G, Rajendran K, Dash S, Nicolau DV, Dobroiu S, Dos Remedios CG, Nicolau DV. Biosensing using antibody-modulated motility of actin filaments on myosin-coated surfaces. Biosens Bioelectron 2024; 246:115879. [PMID: 38056344 DOI: 10.1016/j.bios.2023.115879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/11/2023] [Accepted: 11/22/2023] [Indexed: 12/08/2023]
Abstract
Motor proteins, such as myosin and kinesin, are biological molecular motors involved in force generation and intracellular transport within living cells. The characteristics of molecular motors, i.e., their motility over long distances, their capacity of transporting cargoes, and their very efficient energy consumption, recommend them as potential operational elements of a new class of dynamic nano-devices, with potential applications in biosensing, analyte concentrators, and biocomputation. A possible design of a biosensor based on protein molecular motor comprises a surface with immobilized motors propelling cytoskeletal filaments, which are decorated with antibodies, presented as side-branches. Upon biomolecular recognition of these branches by secondary antibodies, the 'extensions' on the cytoskeletal filaments can achieve considerable lengths (longer than several diameters of the cytoskeletal filament carrier), thus geometrically impairing or halting motility. Because the filaments are several micrometers long, this sensing mechanism converts an event in the nanometer range, i.e., antibody-antigen sizes, into an event in the micrometer range: the visualization of the halting of motility of microns-long cytoskeletal filaments. Here we demonstrate the proof of concept of a sensing system comprising heavy-mero-myosin immobilized on surfaces propelling actin filaments decorated with actin antibodies, whose movement is halted upon the recognition with secondary anti-actin antibodies. Because antibodies to the actin-myosin system are involved in several rare diseases, the first possible application for such a device may be their prognosis and diagnosis. The results also provide insights into guidelines for designing highly sensitive and very fast biosensors powered by motor proteins.
Collapse
Affiliation(s)
- Murat Kekic
- Muscle Research Unit, Department of Anatomy, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Kristi L Hanson
- BioNanoEngineering Labs, Faculty of Engineering and Industrial Science, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | | | - Gerardin Solana
- BioNanoEngineering Labs, Faculty of Engineering and Industrial Science, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Kavya Rajendran
- Department of Bioengineering, Faculty of Engineering, McGill University, Montreal, Quebec, H3A 0C3, Canada
| | - Shantoshini Dash
- Department of Bioengineering, Faculty of Engineering, McGill University, Montreal, Quebec, H3A 0C3, Canada
| | - Dan V Nicolau
- BioNanoEngineering Labs, Faculty of Engineering and Industrial Science, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia; Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, Faculty of Life Sciences & Medicine, King's College London, London SE1 1UL, UK
| | - Serban Dobroiu
- Department of Bioengineering, Faculty of Engineering, McGill University, Montreal, Quebec, H3A 0C3, Canada
| | - Cristobal G Dos Remedios
- Muscle Research Unit, Department of Anatomy, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Dan V Nicolau
- BioNanoEngineering Labs, Faculty of Engineering and Industrial Science, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia; Department of Bioengineering, Faculty of Engineering, McGill University, Montreal, Quebec, H3A 0C3, Canada.
| |
Collapse
|
2
|
Boysen RI, Schwarz LJ, Nicolau DV, Hearn MTW. Molecularly imprinted polymer membranes and thin films for the separation and sensing of biomacromolecules. J Sep Sci 2016; 40:314-335. [PMID: 27619154 DOI: 10.1002/jssc.201600849] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 07/31/2016] [Accepted: 08/29/2016] [Indexed: 01/25/2023]
Abstract
This review describes recent advances associated with the development of surface imprinting methods for the synthesis of polymeric membranes and thin films, which possess the capability to selectively and specifically recognize biomacromolecules, such as proteins and single- and double-stranded DNA, employing "epitope" or "whole molecule" approaches. Synthetic procedures to create different molecularly imprinted polymer membranes or thin films are discussed, including grafting/in situ polymerization, drop-, dip-, or spin-coating procedures, electropolymerization as well as micro-contact or stamp lithography imprinting methods. Highly sensitive techniques for surface characterization and analyte detection are described, encompassing luminescence and fluorescence spectroscopy, X-ray photoelectron spectroscopy, FTIR spectroscopy, surface-enhanced Raman spectroscopy, atomic force microscopy, quartz crystal microbalance analysis, cyclic voltammetry, and surface plasmon resonance. These developments are providing new avenues to produce bioelectronic sensors and new ways to explore through advanced separation science procedures complex phenomena associated with the origins of biorecognition in nature.
Collapse
Affiliation(s)
- Reinhard I Boysen
- Australian Centre for Research on Separation Science (ACROSS), Centre for Green Chemistry, Monash University, Melbourne, Australia
| | - Lachlan J Schwarz
- Australian Centre for Research on Separation Science (ACROSS), Centre for Green Chemistry, Monash University, Melbourne, Australia.,School of Agricultural and Wine Sciences, Faculty of Science, Charles Sturt University, Wagga Wagga, Australia
| | - Dan V Nicolau
- Australian Centre for Research on Separation Science (ACROSS), Centre for Green Chemistry, Monash University, Melbourne, Australia.,Department of Bioengineering, Faculty of Engineering, McGill University, Montreal, Canada
| | - Milton T W Hearn
- Australian Centre for Research on Separation Science (ACROSS), Centre for Green Chemistry, Monash University, Melbourne, Australia
| |
Collapse
|
3
|
Ishigure Y, Nitta T. Simulating an Actomyosin in Vitro Motility Assay: Toward the Rational Design of Actomyosin-Based Microtransporters. IEEE Trans Nanobioscience 2015; 14:641-8. [PMID: 26087497 DOI: 10.1109/tnb.2015.2443373] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We present a simulation study of an actomyosin in vitro motility assay. In vitro motility assays have served as an essential element facilitating the application of actomyosin in nanotechnology; such applications include biosensors and biocomputation. Although actomyosin in vitro motility assays have been extensively investigated, some ambiguities remain, as a result of the limited spatio-temporal resolution and unavoidable uncertainties associated with the experimental process. These ambiguities hamper the rational design of nanodevices for practical applications. Here, with the aim of moving toward a rational design process, we developed a 3D computer simulation method of an actomyosin in vitro motility assay, based on a Brownian dynamics simulation. The simulation explicitly included the ATP hydrolysis cycle of myosin. The simulation was validated by the reproduction of previous experimental results. More importantly, the simulation provided new insights that are difficult to obtain experimentally, including data on the number of myosin motors actually binding to actin filaments, the mechanism responsible for the guiding of actin filaments by chemical edges, and the effect of the processivity of motor proteins on the guiding probabilities. The simulations presented here will be useful in interpreting experimental results, and also in designing future nanodevices integrated with myosin motors.
Collapse
|