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Sande MG, Roque L, Braga A, Marques M, Ferreira D, Saragliadis A, Rodrigues JL, Linke D, Ramada D, Silva C, Rodrigues LR. Design of new hydrolyzed collagen-modified magnetic nanoparticles to capture pathogens. J Biomed Mater Res B Appl Biomater 2023; 111:354-365. [PMID: 36063491 DOI: 10.1002/jbm.b.35155] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 07/28/2022] [Accepted: 08/17/2022] [Indexed: 12/15/2022]
Abstract
Enrichment and diagnosis tools for pathogens currently available are time consuming, thus the development of fast and highly sensitive alternatives is desirable. In this study, a novel approach was described that enables selective capture of bacteria expressing hydrolyzed collagen-binding adhesins with hydrolyzed collagen-coated magnetic nanoparticles (MNPs). This platform could be useful to shorten the time needed to confirm the presence of a bacterial infection. MNPs were synthesized by a simple two-step approach through a green co-precipitation method using water as solvent. These MNPs were specifically designed to interact with pathogenic bacteria by establishing a hydrolyzed collagen-adhesin linker. The bacterial capture efficacy of hydrolyzed collagen MNPs (H-Coll@MNPs) for bacteria expressing collagen binding adhesins was 1.3 times higher than that of arginine MNPs (Arg@MNPs), herein used as control. More importantly, after optimization of the MNP concentration and contact time, the H-Coll@MNPs were able to capture 95% of bacteria present in the samples. More importantly, the bacteria can be enriched within 30 min and the time for bacterial identification is effectively shortened in comparison to the "gold standard" in clinical diagnosis. These results suggest that H-Coll@MNPs can be used for the selective isolation of specific bacteria from mixed populations present, for example, in biological samples.
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Affiliation(s)
- Maria G Sande
- CEB-Centre of Biological Engineering, Universidade do Minho, Braga, Portugal.,LABBELS - Associate Laboratory, Braga/Guimarães, Portugal
| | - Lúcia Roque
- CENTI-Center for Nanotechnology and Smart Materials, Vila Nova de Famalicão, Portugal
| | - Adelaide Braga
- CEB-Centre of Biological Engineering, Universidade do Minho, Braga, Portugal.,LABBELS - Associate Laboratory, Braga/Guimarães, Portugal
| | - Márcia Marques
- CENTI-Center for Nanotechnology and Smart Materials, Vila Nova de Famalicão, Portugal
| | - Débora Ferreira
- CEB-Centre of Biological Engineering, Universidade do Minho, Braga, Portugal.,LABBELS - Associate Laboratory, Braga/Guimarães, Portugal
| | - Athanasios Saragliadis
- Section for Genetics and Evolutionary Biology, Department of Biosciences, University of Oslo, Oslo, Norway
| | - Joana L Rodrigues
- CEB-Centre of Biological Engineering, Universidade do Minho, Braga, Portugal.,LABBELS - Associate Laboratory, Braga/Guimarães, Portugal
| | - Dirk Linke
- Section for Genetics and Evolutionary Biology, Department of Biosciences, University of Oslo, Oslo, Norway
| | - David Ramada
- CENTI-Center for Nanotechnology and Smart Materials, Vila Nova de Famalicão, Portugal
| | - Carla Silva
- CENTI-Center for Nanotechnology and Smart Materials, Vila Nova de Famalicão, Portugal.,CITEVE-Technological Center for the Textile and Clothing Industries of Portugal, Vila Nova de Famalicão, Portugal
| | - Lígia R Rodrigues
- CEB-Centre of Biological Engineering, Universidade do Minho, Braga, Portugal.,LABBELS - Associate Laboratory, Braga/Guimarães, Portugal
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