1
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Giarola JF, Santos J, Estevez MC, Ventura S, Pallarès I, Lechuga LM. An α-helical peptide-based plasmonic biosensor for highly specific detection of α-synuclein toxic oligomers. Anal Chim Acta 2024; 1304:342559. [PMID: 38637056 DOI: 10.1016/j.aca.2024.342559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/20/2024] [Accepted: 03/28/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND α-Synuclein (αS) aggregation is the main neurological hallmark of a group of neurodegenerative disorders, collectively referred to as synucleinopathies, of which Parkinson's disease (PD) is the most prevalent. αS oligomers are elevated in the cerebrospinal fluid (CSF) of PD patients, standing as a biomarker for disease diagnosis. However, methods for early PD detection are still lacking. We have recently identified the amphipathic 22-residue peptide PSMα3 as a high-affinity binder of αS toxic oligomers. PSMα3 displayed excellent selectivity and reproducibility, binding to αS toxic oligomers with affinities in the low nanomolar range and without detectable cross-reactivity with functional monomeric αS. RESULTS In this work, we leveraged these PSMα3 unique properties to design a plasmonic-based biosensor for the direct detection of toxic oligomers under label-free conditions. SIGNIFICANCE AND NOVELTY We describe the integration of the peptide in a lab-on-a-chip plasmonic platform suitable for point-of-care measurements of αS toxic oligomers in CSF samples in real-time and at an affordable cost, providing an innovative biosensor for PD early diagnosis in the clinic.
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Affiliation(s)
- Juliana Fátima Giarola
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Jaime Santos
- Institut de Biotecnologia I Biomedicina and Departament de Bioquímica I Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain
| | - M-Carmen Estevez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain.
| | - Salvador Ventura
- Institut de Biotecnologia I Biomedicina and Departament de Bioquímica I Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain
| | - Irantzu Pallarès
- Institut de Biotecnologia I Biomedicina and Departament de Bioquímica I Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain.
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
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2
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Giarola JF, Soler M, Estevez MC, Tarasova A, Le Poder S, Wasniewski M, Decaro N, Lechuga LM. Validation of a plasmonic-based serology biosensor for veterinary diagnosis of COVID-19 in domestic animals. Talanta 2024; 271:125685. [PMID: 38262129 DOI: 10.1016/j.talanta.2024.125685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/25/2024]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic recently demonstrated the devastating impact on public health, economy, and social development of zoonotic infectious diseases, whereby viruses jump from animals to infect humans. Due to this potential of viruses to cross the species barrier, the surveillance of infectious pathogens circulation in domestic and close-to-human animals is indispensable, as they could be potential reservoirs. Optical biosensors, mainly those based on Surface Plasmon Resonance (SPR), have widely demonstrated its ability for providing direct, label-free, and quantitative bioanalysis with excellent sensitivity and reliability. This biosensor technology can provide a powerful tool to the veterinary field, potentially being helpful for the monitoring of the infection spread. We have implemented a multi-target COVID-19 serology plasmonic biosensor for the rapid testing and screening of common European domestic animals. The multi-target serological biosensor assay enables the detection of total SARS-CoV-2 antibodies (IgG + IgM) generated towards both S and N viral antigens. The analysis is performed in less than 15 min with a low-volume serum sample (<20 μL, 1:10 dilution), reaching a limit of detection of 49.6 ng mL-1. A complete validation has been carried out with hamster, dog, and cat sera samples (N = 75, including 37 COVID-19-positive and 38 negative samples). The biosensor exhibits an excellent diagnostic sensitivity (100 %) and good specificity (71.4 %) for future application in veterinary settings. Furthermore, the biosensor technology is integrated into a compact, portable, and user-friendly device, well-suited for point-of-care testing. This study positions our plasmonic biosensor as an alternative and reliable diagnostic tool for COVID-19 serology in animal samples, expanding the applicability of plasmonic technologies for decentralized analysis in veterinary healthcare and animal research.
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Affiliation(s)
- Juliana Fátima Giarola
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, 08193, Bellaterra, Barcelona, Spain
| | - Maria Soler
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, 08193, Bellaterra, Barcelona, Spain.
| | - M-Carmen Estevez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, 08193, Bellaterra, Barcelona, Spain
| | - Anna Tarasova
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, 08193, Bellaterra, Barcelona, Spain
| | - Sophie Le Poder
- UMR Virologie, INRAE, ANSES, École Nationale Vétérinaire d'Alfort, 94700, Maisons-Alfort, France
| | - Marine Wasniewski
- Interfas Unit, Nancy Laboratory for Rabies and Wildlife, ANSES, 54220, Malzéville, France
| | - Nicola Decaro
- Department of Veterinary Medicine, University of Bari Aldo Moro, 70121, Bari, Italy
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, 08193, Bellaterra, Barcelona, Spain
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3
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Calvo-Lozano O, Hernández-López L, Gomez L, Carné-Sánchez A, von Baeckmann C, Lechuga LM, Maspoch D. Integration of Metal-Organic Polyhedra onto a Nanophotonic Sensor for Real-Time Detection of Nitrogenous Organic Pollutants in Water. ACS Appl Mater Interfaces 2023; 15:39523-39529. [PMID: 37566722 PMCID: PMC10450679 DOI: 10.1021/acsami.3c07213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023]
Abstract
The grave health and environmental consequences of water pollution demand new tools, including new sensing technologies, for the immediate detection of contaminants in situ. Herein, we report the integration of metal-organic cages or polyhedra (MOCs/MOPs) within a nanophotonic sensor for the rapid, direct, and real-time detection of small (<500 Da) pollutant molecules in water. The sensor, a bimodal waveguide silicon interferometer incorporating Rh(II)-based MOPs as specific chemical receptors, does not require sample pretreatment and enables minimal expenditure of time and reagents. We validated our sensor for the detection of two common pollutants: the industrial corrosion inhibitor 1,2,3-benzotriazole (BTA) and the systemic insecticide imidacloprid (IMD). The sensor offers a fast time-to-result response (15 min), high sensitivity, and high accuracy. The limit of detection (LOD) in tap water for BTA is 0.068 μg/mL and for IMD, 0.107 μg/mL, both of which are below the corresponding toxicity thresholds defined by the European Chemicals Agency (ECHA). By combining innovative chemical molecular receptors such as MOPs with state-of-the-art photonic sensing technologies, our research opens the path to implement competitive sensor devices for in situ environmental monitoring.
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Affiliation(s)
- Olalla Calvo-Lozano
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BNN,
and Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Laura Hernández-López
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and Barcelona
Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Departament
de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Leyre Gomez
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and Barcelona
Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Arnau Carné-Sánchez
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and Barcelona
Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Departament
de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Cornelia von Baeckmann
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and Barcelona
Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Departament
de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Laura M. Lechuga
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BNN,
and Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Daniel Maspoch
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and Barcelona
Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Departament
de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
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4
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Batool R, Soler M, Colavita F, Fabeni L, Matusali G, Lechuga LM. Biomimetic nanoplasmonic sensor for rapid evaluation of neutralizing SARS-CoV-2 monoclonal antibodies as antiviral therapy. Biosens Bioelectron 2023; 226:115137. [PMID: 36796306 PMCID: PMC9904857 DOI: 10.1016/j.bios.2023.115137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/16/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023]
Abstract
Monoclonal antibody (mAb) therapy is one of the most promising immunotherapies that have shown the potential to prevent or neutralize the effects of COVID-19 in patients at very early stages, with a few formulations recently approved by the European and American medicine agencies. However, a main bottleneck for their general implementation resides in the time-consuming, laborious, and highly-specialized techniques employed for the manufacturing and assessing of these therapies, excessively increasing their prices and delaying their administration to the patients. We propose a biomimetic nanoplasmonic biosensor as a novel analytical technique for the screening and evaluation of COVID-19 mAb therapies in a simpler, faster, and reliable manner. By creating an artificial cell membrane on the plasmonic sensor surface, our label-free sensing approach enables real-time monitoring of virus-cell interactions as well as direct analysis of antibody blocking effects in only 15 min assay time. We have achieved detection limits in the 102 TCID50/mL range for the study of SARS-CoV-2 viruses, which allows to perform neutralization assays by only employing a low-volume sample with common viral loads. We have demonstrated the accuracy of the biosensor for the evaluation of two different neutralizing antibodies targeting both Delta and Omicron variants of SARS-CoV-2, with half maximal inhibitory concentrations (IC50) determined in the ng/mL range. Our user-friendly and reliable technology could be employed in biomedical and pharmaceutical laboratories to accelerate, cheapen, and simplify the development of effective immunotherapies for COVID-19 and other serious infectious diseases or cancer.
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Affiliation(s)
- Razia Batool
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST, CIBER-BBN, Spain
| | - Maria Soler
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST, CIBER-BBN, Spain.
| | - Francesca Colavita
- National Institute for Infectious Disease “L. Spallanzani”, IRCCS, Rome, Italy
| | - Lavinia Fabeni
- National Institute for Infectious Disease “L. Spallanzani”, IRCCS, Rome, Italy
| | - Giulia Matusali
- National Institute for Infectious Disease “L. Spallanzani”, IRCCS, Rome, Italy
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST, CIBER-BBN, Spain,Corresponding author
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5
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Lee S, Gonzalez-Suarez AM, Huang X, Calvo-Lozano O, Suvakov S, Lechuga LM, Garovic VD, Stybayeva G, Revzin A. Using Electrochemical Immunoassay in a Novel Microtiter Plate to Detect Surface Markers of Preeclampsia on Urinary Extracellular Vesicles. ACS Sens 2023; 8:207-217. [PMID: 36548998 DOI: 10.1021/acssensors.2c02077] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Indexed: 12/24/2022]
Abstract
Extracellular vesicles (EVs) are lipid bilayer nanovesicles secreted by cells. EVs contain biological information related to parental cells and provide biomarkers for disease diagnosis. We have previously shown that the levels of podocin and nephrin expression on urinary EVs may be used to diagnose renal injury associated with preeclampsia. This paper describes a nanoparticle-enabled immunoassay integrated with an electrochemical plate for quantifying podocin and nephrin expression in urinary EVs. The strategy entailed capturing EVs on an electrode surface and then labeling EVs with gold nanoparticles that are both functionalized with antibodies for target specificity and impregnated with redox-active metal ions for electrochemical detection. These immunoprobes produced an electrochemical redox signal proportional to the expression level of EV surface markers. Electrochemical immunoassays were carried out in a novel microtiter plate that contained 16 wells with working electrodes connected to onboard counter/reference electrodes via capillary valves. Upon validation with recombinant proteins, a microtiter plate was used for analysis of urinary EVs from healthy and preeclamptic pregnant women. This analysis revealed a higher podocin to nephrin ratio for preeclamptic women compared to healthy controls (4.31 vs 1.69) suggesting that this ratio may be used for disease diagnosis.
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Affiliation(s)
- Seonhwa Lee
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Alan M Gonzalez-Suarez
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - XuHai Huang
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Olalla Calvo-Lozano
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBERBBN and BIST, Barcelona 08193, Spain
| | - Sonja Suvakov
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBERBBN and BIST, Barcelona 08193, Spain
| | - Vesna D Garovic
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Gulnaz Stybayeva
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.,Sersense Inc., Rochester, Minnesota 55905, United States
| | - Alexander Revzin
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
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6
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Calvo-Lozano O, García-Aparicio P, Raduly LZ, Estévez MC, Berindan-Neagoe I, Ferracin M, Lechuga LM. One-Step and Real-Time Detection of microRNA-21 in Human Samples for Lung Cancer Biosensing Diagnosis. Anal Chem 2022; 94:14659-14665. [PMID: 36219565 PMCID: PMC9607850 DOI: 10.1021/acs.analchem.2c02895] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The rapid diagnosis
of cancer, especially in its early
stages,
is crucial for on-time medical treatment and for increasing the patient
survival rate. Lung cancer shows the highest mortality rate and the
lowest 5-year survival rate due to the late diagnosis in advanced
cancer stages. Providing rapid and reliable diagnostic tools is a
top priority to address the problem of a delayed cancer diagnosis.
We introduce a nanophotonic biosensor for the direct and real-time
detection in human plasma of the microRNA-21-5p biomarker related
to lung cancer. The biosensor employs a silicon photonic bimodal interferometric
waveguide that provides a highly sensitive detection in a label-free
format. We demonstrate a very competitive detectability for direct
microRNA-21-5p biomarker assays in human plasma samples (estimated
LOD: 25 pM). The diagnostic capability of our biosensor was validated
by analyzing 40 clinical samples from healthy individuals and lung
cancer patients, previously analyzed by reverse-transcription quantitative
polymerase chain reaction (qRT-PCR). We could successfully identify
and quantify the levels of microRNA in a one-step assay, without the
need for DNA extraction or amplification steps. The study confirmed
the significance of implementing this biosensor technique compared
to the benchmarking molecular analysis and showed excellent agreement
with previous results employing the traditional qRT-PCR. This work
opens new possibilities for the true implementation of point-of-care
biosensors that enable fast, simple, and efficient early diagnosis
of cancer diseases.
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Affiliation(s)
- Olalla Calvo-Lozano
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Pablo García-Aparicio
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Lajos-Zsolt Raduly
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, University of Medicine and Pharmacy "Iuliu Hatieganu", Gheorghe Marinescu 23, 400337 Cluj-Napoca, Romania
| | - Maria Carmen Estévez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, University of Medicine and Pharmacy "Iuliu Hatieganu", Gheorghe Marinescu 23, 400337 Cluj-Napoca, Romania
| | - Manuela Ferracin
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
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7
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Merkoçi A, Li CZ, Lechuga LM, Ozcan A. Editorial on COVID-19 biosensing technologies- 2d Edition. Biosens Bioelectron 2022; 212:114340. [PMID: 35562254 PMCID: PMC9069983 DOI: 10.1016/j.bios.2022.114340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Arben Merkoçi
- Nanobioelectronics & Biosensors Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST, Campus UAB, 08193, Bellaterra, Barcelona, Spain; ICREA, Institució Catalana de Recerca I Estudis Avançats, Barcelona, Spain.
| | - Chen-Zhong Li
- Center of Cellular and Molecular Diagnosis, Tulane University School of Medicine, New Orleans, LA, 70112, USA.
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, 08193, Bellaterra, Barcelona, Spain.
| | - Aydogan Ozcan
- Electrical & Computer Engineering and Bioengineering Departments, University of California, Los Angeles (UCLA), CA, 90095, USA.
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8
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Choi D, Gwon K, Hong HJ, Baskaran H, Calvo-Lozano O, Gonzalez-Suarez AM, Park K, de Hoyos-Vega JM, Lechuga LM, Hong J, Stybayeva G, Revzin A. Coating Bioactive Microcapsules with Tannic Acid Enhances the Phenotype of the Encapsulated Pluripotent Stem Cells. ACS Appl Mater Interfaces 2022; 14:10.1021/acsami.2c06783. [PMID: 35658394 PMCID: PMC10314364 DOI: 10.1021/acsami.2c06783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Human pluripotent stem cells (hPSCs) may be differentiated into any adult cell type and therefore hold incredible promise for cell therapeutics and disease modeling. There is increasing interest in three-dimensional (3D) hPSC culture because of improved differentiation outcomes and potential for scale up. Our team has recently described bioactive heparin (Hep)-containing core-shell microcapsules that promote rapid aggregation of stem cells into spheroids and may also be loaded with growth factors for the local and sustained delivery to the encapsulated cells. In this study, we explored the possibility of further modulating bioactivity of microcapsules through the use of an ultrathin coating composed of tannic acid (TA). Deposition of the TA film onto model substrates functionalized with Hep and poly(ethylene glycol) was characterized by ellipsometry and atomic force microscopy. Furthermore, the presence of the TA coating was observed to increase the amount of basic fibroblast growth factor (bFGF) incorporation by up to twofold and to extend its release from 5 to 7 days. Most significantly, TA-microcapsules loaded with bFGF induced higher levels of pluripotency expression compared to uncoated microcapsules containing bFGF. Engineered microcapsules described here represent a new stem cell culture approach that enables 3D cultivation and relies on local delivery of inductive cues.
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Affiliation(s)
- Daheui Choi
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Kihak Gwon
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Hye Jin Hong
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Harihara Baskaran
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Olalla Calvo-Lozano
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBERBBN and BIST, Barcelona 08193, Spain
| | - Alan M Gonzalez-Suarez
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Kyungtae Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jose M de Hoyos-Vega
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBERBBN and BIST, Barcelona 08193, Spain
| | - Jinkee Hong
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Gulnaz Stybayeva
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Alexander Revzin
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States
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9
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Calvo-Lozano O, Sierra M, Soler M, Estévez MC, Chiscano-Camón L, Ruiz-Sanmartin A, Ruiz-Rodriguez JC, Ferrer R, González-López JJ, Esperalba J, Fernández-Naval C, Bueno L, López-Aladid R, Torres A, Fernández-Barat L, Attoumani S, Charrel R, Coutard B, Lechuga LM. Label-Free Plasmonic Biosensor for Rapid, Quantitative, and Highly Sensitive COVID-19 Serology: Implementation and Clinical Validation. Anal Chem 2021; 94:975-984. [PMID: 34971311 PMCID: PMC8751014 DOI: 10.1021/acs.analchem.1c03850] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
![]()
Serological tests
are essential for the control and management
of COVID-19 pandemic (diagnostics and surveillance, and epidemiological
and immunity studies). We introduce a direct serological biosensor
assay employing proprietary technology based on plasmonics, which
offers rapid (<15 min) identification and quantification of severe
acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies in
clinical samples, without signal amplification. The portable plasmonic
device employs a custom-designed multiantigen (RBD peptide and N protein)
sensor biochip and reaches detection limits in the low ng mL–1 range employing polyclonal antibodies. It has also been implemented
employing the WHO-approved anti-SARS-CoV-2 immunoglobulin standard.
A clinical validation with COVID-19 positive and negative samples
(n = 120) demonstrates its excellent diagnostic sensitivity
(99%) and specificity (100%). This positions our biosensor as an accurate
and easy-to-use diagnostics tool for rapid and reliable COVID-19 serology
to be employed both at laboratory and decentralized settings for the
disease management and for the evaluation of immunological status
during vaccination or treatment.
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Affiliation(s)
- Olalla Calvo-Lozano
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, Barcelona 08193, Spain
| | - Miquel Sierra
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, Barcelona 08193, Spain
| | - Maria Soler
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, Barcelona 08193, Spain
| | - Maria Carmen Estévez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, Barcelona 08193, Spain
| | - Luis Chiscano-Camón
- Intensive Care Department, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain.,Shock, Organ Dysfunction and Resuscitation Research Group, Vall d'Hebron Research Institute (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain
| | - Adolfo Ruiz-Sanmartin
- Intensive Care Department, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain.,Shock, Organ Dysfunction and Resuscitation Research Group, Vall d'Hebron Research Institute (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain
| | - Juan Carlos Ruiz-Rodriguez
- Intensive Care Department, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain.,Shock, Organ Dysfunction and Resuscitation Research Group, Vall d'Hebron Research Institute (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain
| | - Ricard Ferrer
- Intensive Care Department, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain.,Shock, Organ Dysfunction and Resuscitation Research Group, Vall d'Hebron Research Institute (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain
| | - Juan José González-López
- Clinical Microbiology Department, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain.,Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Barcelona Hospital Campus, Passeig, Vall d'Hebron 119-129, Barcelona 08035, Spain.,Department of Genetics and Microbiology, Universitat Autònoma de Barcelona, Plaça Cívica, Bellaterra, Barcelona 08193, Spain
| | - Juliana Esperalba
- Clinical Microbiology Department, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain.,Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Barcelona Hospital Campus, Passeig, Vall d'Hebron 119-129, Barcelona 08035, Spain
| | - Candela Fernández-Naval
- Clinical Microbiology Department, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain.,Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Barcelona Hospital Campus, Passeig, Vall d'Hebron 119-129, Barcelona 08035, Spain
| | - Leticia Bueno
- Cellex Laboratory, CiberRes (Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, 06/06/0028), Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Carrer de Roselló 149, Barcelona 08036, Spain.,School of Medicine, University of Barcelona, Carrer de Casanova, 143, Barcelona 08036, Spain.,Department of Pneumology, Thorax Institute, Hospital Clinic of Barcelona, Carrer de Villarroel, 170, Barcelona 08036, Spain
| | - Ruben López-Aladid
- Cellex Laboratory, CiberRes (Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, 06/06/0028), Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Carrer de Roselló 149, Barcelona 08036, Spain.,School of Medicine, University of Barcelona, Carrer de Casanova, 143, Barcelona 08036, Spain.,Department of Pneumology, Thorax Institute, Hospital Clinic of Barcelona, Carrer de Villarroel, 170, Barcelona 08036, Spain
| | - Antoni Torres
- Cellex Laboratory, CiberRes (Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, 06/06/0028), Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Carrer de Roselló 149, Barcelona 08036, Spain.,School of Medicine, University of Barcelona, Carrer de Casanova, 143, Barcelona 08036, Spain.,Department of Pneumology, Thorax Institute, Hospital Clinic of Barcelona, Carrer de Villarroel, 170, Barcelona 08036, Spain
| | - Laia Fernández-Barat
- Cellex Laboratory, CiberRes (Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, 06/06/0028), Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Carrer de Roselló 149, Barcelona 08036, Spain.,School of Medicine, University of Barcelona, Carrer de Casanova, 143, Barcelona 08036, Spain.,Department of Pneumology, Thorax Institute, Hospital Clinic of Barcelona, Carrer de Villarroel, 170, Barcelona 08036, Spain
| | - Sarah Attoumani
- Unité Des Virus Émergents (UVE: Aix-Univ-IRD 190-Inserm 1207), Marseille 13005, France
| | - Rémi Charrel
- Unité Des Virus Émergents (UVE: Aix-Univ-IRD 190-Inserm 1207), Marseille 13005, France
| | - Bruno Coutard
- Unité Des Virus Émergents (UVE: Aix-Univ-IRD 190-Inserm 1207), Marseille 13005, France
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, Barcelona 08193, Spain
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10
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Huertas CS, Lechuga LM. Ultrasensitive Label-Free Nucleic-Acid Biosensors Based on Bimodal Waveguide Interferometers. Methods Mol Biol 2021; 2393:89-125. [PMID: 34837176 DOI: 10.1007/978-1-0716-1803-5_6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The bimodal waveguide (BiMW) biosensor is an innovative common path interferometric sensor based on the evanescent field detection principle. This biosensor allows for the direct detection of virtually any biomolecular interaction in a label-free scheme by using specific biorecognition elements. Due to its inherent ultrasensitivity, it has been employed for the monitoring of relevant nucleic-acid sequences such as mRNA transcripts or microRNAs present at the attomolar-femtomolar concentration level in human samples. The application of the BiMW biosensor to detect these nucleic acids can be a powerful analytical tool for diagnosis and prognosis of complex illnesses, such as cancer, where these biomarkers play a major role. The BiMW sensor is fabricated using standard silicon-based microelectronics technology, which allows its miniaturization and cost-effective production, meeting the requirements of portability and disposability for the development of point-of-care (PoC) sensing platforms.In this chapter, we describe the working principle of the BiMW biosensor as well as its application for the analysis of nucleic acids. Concretely, we show a detailed description of DNA functionalization procedures and the complete analysis of two different RNA biomarkers for cancer diagnosis: (1) the analysis of mRNA transcripts generated by alternative splicing of Fas gene, and (2) the detection of miRNA 181a from urine liquid biopsies, for the early diagnosis of bladder cancer. The biosensing detection is performed by a direct assay in real time, by monitoring the changes in the intensity pattern of the light propagating through the BiMW biosensor, due to the hybridization of the target with the specific DNA probe previously functionalized on the BiMW sensor surface.
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Affiliation(s)
- Cesar S Huertas
- Integrated Photonics and Applications Centre, School of Engineering, RMIT University, Melbourne, VIC, Australia.
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Ed-ICN2, Barcelona, Spain
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11
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Soler M, Lechuga LM. Biochemistry strategies for label-free optical sensor biofunctionalization: advances towards real applicability. Anal Bioanal Chem 2021; 414:5071-5085. [PMID: 34735605 PMCID: PMC9242939 DOI: 10.1007/s00216-021-03751-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/18/2021] [Accepted: 10/22/2021] [Indexed: 12/01/2022]
Abstract
Label-free biosensors, and especially those based on optical transducers like plasmonic or silicon photonic systems, have positioned themselves as potential alternatives for rapid and highly sensitive clinical diagnostics, on-site environmental monitoring, and for quality control in foods or other industrial applications, among others. However, most of the biosensor technology has not yet been transferred and implemented in commercial products. Among the several causes behind that, a major challenge is the lack of standardized protocols for sensor biofunctionalization. In this review, we summarize the most common methodologies for sensor surface chemical modification and bioreceptor immobilization, discussing their advantages and limitations in terms of analytical sensitivity and selectivity, reproducibility, and versatility. Special focus is placed on the suggestions of innovative strategies towards antifouling and biomimetic functional coatings to boost the applicability and reliability of optical biosensors in clinics and biomedicine. Finally, a brief overview of research directions in the area of device integration, automation, and multiplexing will give a glimpse of the future perspectives for label-free optical biosensors.
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Affiliation(s)
- Maria Soler
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST, and CIBER-BBN, Bellaterra, 08193, Barcelona, Spain.
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST, and CIBER-BBN, Bellaterra, 08193, Barcelona, Spain
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12
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Ramirez-Priego P, Estévez MC, Díaz-Luisravelo HJ, Manclús JJ, Montoya Á, Lechuga LM. Real-time monitoring of fenitrothion in water samples using a silicon nanophotonic biosensor. Anal Chim Acta 2021; 1152:338276. [PMID: 33648644 DOI: 10.1016/j.aca.2021.338276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 12/13/2022]
Abstract
Due to the large quantities of pesticides extensively used and their impact on the environment and human health, a prompt and reliable sensing technique could constitute an excellent tool for in-situ monitoring. With this aim, we have applied a highly sensitive photonic biosensor based on a bimodal waveguide interferometer (BiMW) for the rapid, label-free, and specific quantification of fenitrothion (FN) directly in tap water samples. After an optimization protocol, the biosensor achieved a limit of detection (LOD) of 0.29 ng mL-1 (1.05 nM) and a half-maximal inhibitory concentration (IC50) of 1.71 ng mL-1 (6.09 nM) using a competitive immunoassay and employing diluted tap water. Moreover, the biosensor was successfully employed to determine FN concentration in blind tap water samples obtaining excellent recovery percentages with a time-to-result of only 20 min without any sample pre-treatment. The features of the biosensor suggest its potential application for real time, fast and sensitive screening of FN in water samples as an analytical tool for the monitoring of the water quality.
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Affiliation(s)
- Patricia Ramirez-Priego
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - M-Carmen Estévez
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Bellaterra, 08193, Barcelona, Spain.
| | - Heriberto J Díaz-Luisravelo
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Juan J Manclús
- Centro de Investigación e Innovación en Bioingeniería (Ci2B), Universitat Politècnica de València, Camino de Vera S/n, 46022, Valencia, Spain
| | - Ángel Montoya
- Centro de Investigación e Innovación en Bioingeniería (Ci2B), Universitat Politècnica de València, Camino de Vera S/n, 46022, Valencia, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Bellaterra, 08193, Barcelona, Spain
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13
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Affiliation(s)
- Arben Merkoçi
- Nanobioelectronics & Biosensors Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), BIST, Campus UAB, 08193, Bellaterra, Barcelona, Spain; ICREA, Institució Catalana de Recerca I Estudis Avançats, Barcelona, Spain.
| | - Chen-Zhong Li
- Center of Cellular and Molecular Diagnosis, Tulane University School of Medicine, New Orleans, LA, 70112, USA.
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, 08193, Bellaterra, Barcelona, Spain.
| | - Aydogan Ozcan
- Electrical & Computer Engineering and Bioengineering Departments, UCLA, Los Angeles, CA, 90095, USA.
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14
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Leuermann J, Stamenkovic V, Ramirez-Priego P, Sánchez-Postigo A, Fernández-Gavela A, Chapman CA, Bailey RC, Lechuga LM, Perez-Inestrosa E, Collado D, Halir R, Molina-Fernández Í. Coherent silicon photonic interferometric biosensor with an inexpensive laser source for sensitive label-free immunoassays. Opt Lett 2020; 45:6595-6598. [PMID: 33325848 DOI: 10.1364/ol.411635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 11/09/2020] [Indexed: 06/12/2023]
Abstract
Over the past two decades, integrated photonic sensors have been of major interest to the optical biosensor community due to their capability to detect low concentrations of molecules with label-free operation. Among these, interferometric sensors can be read-out with simple, fixed-wavelength laser sources and offer excellent detection limits but can suffer from sensitivity fading when not tuned to their quadrature point. Recently, coherently detected sensors were demonstrated as an attractive alternative to overcome this limitation. Here we show, for the first time, to the best of our knowledge, that this coherent scheme provides sub-nanogram per milliliter limits of detection in C-reactive protein immunoassays and that quasi-balanced optical arm lengths enable operation with inexpensive Fabry-Perot-type lasers sources at telecom wavelengths.
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15
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Maldonado J, Estévez MC, Fernández-Gavela A, González-López JJ, González-Guerrero AB, Lechuga LM. Label-free detection of nosocomial bacteria using a nanophotonic interferometric biosensor. Analyst 2020; 145:497-506. [PMID: 31750459 DOI: 10.1039/c9an01485c] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Nosocomial infections are a major concern at the worldwide level. Early and accurate identification of nosocomial pathogens is crucial to provide timely and adequate treatment. A prompt response also prevents the progression of the infection to life-threatening conditions, such as septicemia or generalized bloodstream infection. We have implemented two highly sensitive methodologies using an ultrasensitive photonic biosensor based on a bimodal waveguide interferometer (BiMW) for the fast detection of Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA), two of the most prevalent bacteria associated with nosocomial infections. For that, we have developed a biofunctionalization strategy based on the use of a PEGylated silane (silane-PEG-COOH) which provides a highly resistant and bacteria-repelling surface, which is crucial to specifically detect each bacterium. Two different biosensor assays have been set under standard buffer conditions: one based on a specific direct immunoassay employing polyclonal antibodies for the detection of P. aeruginosa and another one employing aptamers for the direct detection of MRSA. The biosensor immunoassay for P. aeruginosa is fast (it only takes 12 min) and specific and has experimentally detected concentrations down to 800 cfu mL-1 (cfu: colony forming unit). The second one relies on the use of an aptamer that specifically detects penicillin-binding protein 2a (PBP2a), a protein only expressed in the MRSA mutant, providing a photonic biosensor with the ability to identify the resistant pathogen MRSA and differentiate it from methicillin-susceptible S. aureus (MSSA). Direct, label-free, and selective detection of whole MRSA bacteria has been achieved, making possible the direct detection of also 800 cfu mL-1. According to the signal-to-noise (S/N) ratio of the device, a theoretical limit of detection (LOD) of around 49 and 29 cfu mL-1 was estimated for P. aeruginosa and MRSA, respectively. Both results obtained under standard conditions reveal the great potential this interferometric biosensor device has as a versatile and specific tool for bacterial detection and quantification, providing a rapid method for the identification of nosocomial pathogens within the clinical requirements of sensitivity for the diagnosis of infections.
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Affiliation(s)
- Jesús Maldonado
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN, and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain.
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16
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Soler M, Estevez MC, Cardenosa-Rubio M, Astua A, Lechuga LM. How Nanophotonic Label-Free Biosensors Can Contribute to Rapid and Massive Diagnostics of Respiratory Virus Infections: COVID-19 Case. ACS Sens 2020; 5:2663-2678. [PMID: 32786383 PMCID: PMC7447078 DOI: 10.1021/acssensors.0c01180] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 08/07/2020] [Indexed: 12/23/2022]
Abstract
The global sanitary crisis caused by the emergence of the respiratory virus SARS-CoV-2 and the COVID-19 outbreak has revealed the urgent need for rapid, accurate, and affordable diagnostic tests to broadly and massively monitor the population in order to properly manage and control the spread of the pandemic. Current diagnostic techniques essentially rely on polymerase chain reaction (PCR) tests, which provide the required sensitivity and specificity. However, its relatively long time-to-result, including sample transport to a specialized laboratory, delays massive detection. Rapid lateral flow tests (both antigen and serological tests) are a remarkable alternative for rapid point-of-care diagnostics, but they exhibit critical limitations as they do not always achieve the required sensitivity for reliable diagnostics and surveillance. Next-generation diagnostic tools capable of overcoming all the above limitations are in demand, and optical biosensors are an excellent option to surpass such critical issues. Label-free nanophotonic biosensors offer high sensitivity and operational robustness with an enormous potential for integration in compact autonomous devices to be delivered out-of-the-lab at the point-of-care (POC). Taking the current COVID-19 pandemic as a critical case scenario, we provide an overview of the diagnostic techniques for respiratory viruses and analyze how nanophotonic biosensors can contribute to improving such diagnostics. We review the ongoing published work using this biosensor technology for intact virus detection, nucleic acid detection or serological tests, and the key factors for bringing nanophotonic POC biosensors to accurate and effective COVID-19 diagnosis on the short term.
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Affiliation(s)
| | | | - Maria Cardenosa-Rubio
- Nanobiosensors and Bioanalytical Applications (NanoB2A),
Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and
CIBER-BBN, 08193 Bellaterra, Barcelona, Spain
| | - Alejandro Astua
- Nanobiosensors and Bioanalytical Applications (NanoB2A),
Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and
CIBER-BBN, 08193 Bellaterra, Barcelona, Spain
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications (NanoB2A),
Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and
CIBER-BBN, 08193 Bellaterra, Barcelona, Spain
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17
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Huertas CS, Soler M, Estevez MC, Lechuga LM. One-Step Immobilization of Antibodies and DNA on Gold Sensor Surfaces via a Poly-Adenine Oligonucleotide Approach. Anal Chem 2020; 92:12596-12604. [PMID: 32786435 DOI: 10.1021/acs.analchem.0c02619] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Label-free plasmonic biosensors have demonstrated promising capabilities as analytical tools for the detection of virtually any type of biomarker. They are presented as good candidates for precision diagnostics since they offer highly sensitive, cost-effective solutions that can be used in any clinical or laboratory setting without the need for specialized trainees. However, different surface functionalization protocols are required, depending on the nature of the biorecognition element, limiting their capabilities for integrated multi-biomarker detection. Here, we present a simple, yet efficient, one-step immobilization approach that is common for both DNA probes and antibodies. Our immobilization approach relies on the incorporation of poly-adenine (polyA) blocks in both nucleic acid probes and antibodies. PolyA sequences have a remarkable affinity for gold surfaces and can specifically interact with sufficient strength to generate stable, dense, and highly ordered monolayers. We have demonstrated excellent performance of our universal functionalization method, showing limits of detection and quantification in the pM-nM range. Moreover, it was able to reduce up to 50% of the background signal from undiluted serum samples compared to conventional methods, demonstrating the immense potential of this strategy for the direct analysis of human biofluids, essential for rapid point-of-care diagnostics. The polyA-based immobilization approach is a promising alternative for the generation of multiplexed biosensors that can detect both protein and nucleic acid biomarkers for multiparametric diagnostic assays.
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Affiliation(s)
- Cesar S Huertas
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Bellaterra, Barcelona 08193, Spain.,Integrated Photonics and Applications Centre, School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - Maria Soler
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Bellaterra, Barcelona 08193, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - M-Carmen Estevez
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Bellaterra, Barcelona 08193, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Bellaterra, Barcelona 08193, Spain
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18
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Calvo-Lozano O, Aviñó A, Friaza V, Medina-Escuela A, S. Huertas C, Calderón EJ, Eritja R, Lechuga LM. Fast and Accurate Pneumocystis Pneumonia Diagnosis in Human Samples Using a Label-Free Plasmonic Biosensor. Nanomaterials (Basel) 2020; 10:nano10061246. [PMID: 32604931 PMCID: PMC7353103 DOI: 10.3390/nano10061246] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 01/30/2023]
Abstract
Pneumocystis jirovecii is a fungus responsible for human Pneumocystis pneumonia, one of the most severe infections encountered in immunodepressed individuals. The diagnosis of Pneumocystis pneumonia continues to be challenging due to the absence of specific symptoms in infected patients. Moreover, the standard diagnostic method employed for its diagnosis involves mainly PCR-based techniques, which besides being highly specific and sensitive, require specialized personnel and equipment and are time-consuming. Our aim is to demonstrate an optical biosensor methodology based on surface plasmon resonance to perform such diagnostics in an efficient and decentralized scheme. The biosensor methodology employs poly-purine reverse-Hoogsteen hairpin probes for the detection of the mitochondrial large subunit ribosomal RNA (mtLSU rRNA) gene, related to P. jirovecii detection. The biosensor device performs a real-time and label-free identification of the mtLSU rRNA gene with excellent selectivity and reproducibility, achieving limits of detection of around 2.11 nM. A preliminary evaluation of clinical samples showed rapid, label-free and specific identification of P. jirovecii in human lung fluids such as bronchoalveolar lavages or nasopharyngeal aspirates. These results offer a door for the future deployment of a sensitive diagnostic tool for fast, direct and selective detection of Pneumocystis pneumonia disease.
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Affiliation(s)
- Olalla Calvo-Lozano
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER in Bioengineering, Biomaterials and Nanomedicine and BIST, Campus UAB Bellaterra, 08193 Barcelona, Spain; (O.C.-L.); (C.S.H.); (L.M.L.)
| | - Anna Aviñó
- Institute for Advanced Chemistry of Catalonia (IQAC), CSIC, CIBER in Bioengineering, Biomaterials and Nanomedicine c/Jordi Girona 18–26, 08034 Barcelona, Spain;
- Correspondence:
| | - Vicente Friaza
- Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville and CIBER in Epidemiology and Public Health, 41013 Seville, Spain; (V.F.); (E.J.C.)
| | - Alfonso Medina-Escuela
- Institute for Applied Microelectronics (IUMA), University of Las Palmas de Gran Canaria, 35017 Las Palmas, Spain;
| | - César S. Huertas
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER in Bioengineering, Biomaterials and Nanomedicine and BIST, Campus UAB Bellaterra, 08193 Barcelona, Spain; (O.C.-L.); (C.S.H.); (L.M.L.)
- Integrated Photonics and Applications Centre, School of Engineering, RMIT University, Melbourne 3001, Australia
| | - Enrique J. Calderón
- Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville and CIBER in Epidemiology and Public Health, 41013 Seville, Spain; (V.F.); (E.J.C.)
- Department of Medicine, University of Seville, 41013 Seville, Spain
| | - Ramón Eritja
- Institute for Advanced Chemistry of Catalonia (IQAC), CSIC, CIBER in Bioengineering, Biomaterials and Nanomedicine c/Jordi Girona 18–26, 08034 Barcelona, Spain;
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER in Bioengineering, Biomaterials and Nanomedicine and BIST, Campus UAB Bellaterra, 08193 Barcelona, Spain; (O.C.-L.); (C.S.H.); (L.M.L.)
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19
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Peláez EC, Estevez MC, Mongui A, Menéndez MC, Toro C, Herrera-Sandoval OL, Robledo J, García MJ, Portillo PD, Lechuga LM. Detection and Quantification of HspX Antigen in Sputum Samples Using Plasmonic Biosensing: Toward a Real Point-of-Care (POC) for Tuberculosis Diagnosis. ACS Infect Dis 2020; 6:1110-1120. [PMID: 32233503 DOI: 10.1021/acsinfecdis.9b00502] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Advancements that occurred during the last years in the diagnosis of Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis infection, have prompted increased survival rates of patients. However, limitations related to the inefficiency of an early detection still remain; some techniques and laboratory methods do not have enough specificity and most instruments are expensive and require handling by trained staff. In order to contribute to a prompt and effective diagnosis of tuberculosis, we report the development of a portable, user-friendly, and low-cost biosensor device for its early detection. By using a label-free surface plasmon resonance (SPR) biosensor, we have established a direct immunoassay for the direct detection and quantification of the heat shock protein X (HspX) of Mtb, a well-established biomarker of this pathogen, directly in pretreated sputum samples. The method relies on highly specific monoclonal antibodies that are previously immobilized on the plasmonic sensor surface. This technology allows for the direct detection of the biomarker without amplification steps, showing a limit of detection (LOD) of 0.63 ng mL-1 and a limit of quantification (LOQ) of 2.12 ng mL-1. The direct analysis in pretreated sputum shows significant differences in the HspX concentration in patients with tuberculosis (with concentration levels in the order of 116-175 ng mL-1) compared with non-tuberculosis infected patients (values below the LOQ of the assay).
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Affiliation(s)
- Enelia Cristina Peláez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, 08193 Barcelona, Spain
- Centro de Investigación y Desarrollo Tecnológico de la Industria Electro Electrónica y TIC (CIDEI), Calle 45a BIS # 19-09 Floor 2, Bogotá, DC, Colombia
- Corporación CorpoGen, Departamento Biotecnología Molecular, Carrera 4 # 20-41, Bogotá, DC, Colombia
- Research Cluster on Converging Sciences and Technology (NBIC), Universidad Central, Calle 21 #4-40, Bogotá, DC, Colombia
| | - Maria Carmen Estevez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, 08193 Barcelona, Spain
| | - Alvaro Mongui
- Corporación CorpoGen, Departamento Biotecnología Molecular, Carrera 4 # 20-41, Bogotá, DC, Colombia
| | - M-Carmen Menéndez
- Departamento de Medicina Preventiva, Salud Pública y Microbiología, Facultad de Medicina, Universidad Autónoma de Madrid, St Arzobispo Morcillo s/n, 28029 Madrid, Spain
| | - Carlos Toro
- Department of Microbiology, La Paz University Hospital, IdiPaz, St/Paseo de la Castellana 261, 28046 Madrid, Spain
| | - Oscar L. Herrera-Sandoval
- Centro de Investigación y Desarrollo Tecnológico de la Industria Electro Electrónica y TIC (CIDEI), Calle 45a BIS # 19-09 Floor 2, Bogotá, DC, Colombia
- Research Cluster on Converging Sciences and Technology (NBIC), Universidad Central, Calle 21 #4-40, Bogotá, DC, Colombia
| | - Jaime Robledo
- Corporación para Investigaciones Biológicas (CIB), Laboratorio de Micobacterias, Carrera 72A 78B-141, 050034 Medellín, Colombia
| | - Maria J. García
- Departamento de Medicina Preventiva, Salud Pública y Microbiología, Facultad de Medicina, Universidad Autónoma de Madrid, St Arzobispo Morcillo s/n, 28029 Madrid, Spain
| | - Patricia Del Portillo
- Corporación CorpoGen, Departamento Biotecnología Molecular, Carrera 4 # 20-41, Bogotá, DC, Colombia
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, 08193 Barcelona, Spain
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Portela A, Calvo-Lozano O, Estevez MC, Medina Escuela A, Lechuga LM. Optical nanogap antennas as plasmonic biosensors for the detection of miRNA biomarkers. J Mater Chem B 2020; 8:4310-4317. [PMID: 32329505 DOI: 10.1039/d0tb00307g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanoplasmonic biosensors based on nanogap antenna structures usually demand complex and expensive fabrication processes in order to achieve a good performance and sensitive detection. We here report the fabrication of large-area nanoplasmonic sensor chips based on nanogap antennas by employing a customized, simple and low-cost colloidal lithography process. By precisely controlling the angle for tilted e-beam metal evaporation, an elliptical mask is produced, which defines the total length of the dipole antenna nanostructures while assuring that the plasmonic response is oriented in the same direction along the sensor chip. Large-area sensor chips of nanogap antennas formed by pairs of gold nanodisks separated by gaps with an average size of 11.6 ± 4.7 nm are obtained. The optical characterization of the nanogap antenna structures in an attenuated total reflection (ATR) configuration shows a bulk refractive index sensitivity of 422 nm per RIU, which is in agreement with FDTD numerical simulations. The biosensing potential of the cm2-sized nanostructured plasmonic sensor chips has been evaluated for the detection of miRNA-210, a relevant biomarker for lung cancer diagnosis, through a DNA/miRNA hybridization assay. A limit of detection (LOD) of 0.78 nM (5.1 ng mL-1) was achieved with no need of further amplification steps, demonstrating the high sensitivity of these plasmonic nanogap antennas for the direct and label-free detection of low molecular weight biomolecules such as miRNAs.
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Affiliation(s)
- Alejandro Portela
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB Bellaterra, 08193 Barcelona, Spain.
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21
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22
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Soler M, Lechuga LM. Boosting Cancer Immunotherapies with Optical Biosensor Nanotechnologies. EMJ 2019. [DOI: 10.33590/emj/10312397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
An increasing number of cancer patients have found new hope in the form of recently discovered cell immunotherapies. These novel treatments empower our own immune system to fight and eradicate the malignant tumours, even in metastatic stages. Unprecedented outcomes have been demonstrated with bioengineered cells especially modified in laboratories to trigger a highly specific and active anti-tumour function; however, a main bottleneck for the implementation of these promising therapies resides in the old-fashioned and limited techniques employed for the in vitroanalysis and study of cells during manufacturing and testing processes. Optical label-free biosensors are currently arising as promising analytical technologies for a simplified and accurate cell analysis. In particular, biosensors based on evanescent field principles enable direct, non-invasive, and real-time monitoring of biological events, showing outstanding sensitivities and excellent robustness. Furthermore, these biosensors are easily incorporated in lab-on-a-chip platforms for simple operation and implementation in clinical laboratories. In this review, the authors present and discuss the more recent research aimed to develop label-free optical biosensors for the analysis of live cells and the direct benefits offered to cell immunotherapy production allowing for its widespread implementation.
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Affiliation(s)
- Maria Soler
- Networking Research Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), UAB Campus, Bellaterra, Barcelona, Spain
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23
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Huertas CS, Bonnal S, Soler M, Escuela AM, Valcárcel J, Lechuga LM. Site-Specific mRNA Cleavage for Selective and Quantitative Profiling of Alternative Splicing with Label-Free Optical Biosensors. Anal Chem 2019; 91:15138-15146. [DOI: 10.1021/acs.analchem.9b03898] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Cesar S. Huertas
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, 08193 Bellaterra, Barcelona, Spain
- Integrated Photonics and Applications Centre, School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
| | - Sophie Bonnal
- Centre de Regulació Genòmica and BIST, 08003 Barcelona, Spain
- Universitat Pompeu Fabra, 08003 Barcelona, Spain
| | - Maria Soler
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, 08193 Bellaterra, Barcelona, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029, Madrid, Spain
| | - Alfonso M. Escuela
- Institute for Applied Microelectronics (IUMA). University of Las Palmas de Gran Canaria, E-35017 Las Palmas, Spain
| | - Juan Valcárcel
- Centre de Regulació Genòmica and BIST, 08003 Barcelona, Spain
- Universitat Pompeu Fabra, 08003 Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, 08193 Bellaterra, Barcelona, Spain
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Huertas CS, Calvo-Lozano O, Mitchell A, Lechuga LM. Advanced Evanescent-Wave Optical Biosensors for the Detection of Nucleic Acids: An Analytic Perspective. Front Chem 2019; 7:724. [PMID: 31709240 PMCID: PMC6823211 DOI: 10.3389/fchem.2019.00724] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/10/2019] [Indexed: 12/19/2022] Open
Abstract
Evanescent-wave optical biosensors have become an attractive alternative for the screening of nucleic acids in the clinical context. They possess highly sensitive transducers able to perform detection of a wide range of nucleic acid-based biomarkers without the need of any label or marker. These optical biosensor platforms are very versatile, allowing the incorporation of an almost limitless range of biorecognition probes precisely and robustly adhered to the sensor surface by covalent surface chemistry approaches. In addition, their application can be further enhanced by their combination with different processes, thanks to their integration with complex and automated microfluidic systems, facilitating the development of multiplexed and user-friendly platforms. The objective of this work is to provide a comprehensive synopsis of cutting-edge analytical strategies based on these label-free optical biosensors able to deal with the drawbacks related to DNA and RNA detection, from single point mutations assays and epigenetic alterations, to bacterial infections. Several plasmonic and silicon photonic-based biosensors are described together with their most recent applications in this area. We also identify and analyse the main challenges faced when attempting to harness this technology and how several innovative approaches introduced in the last years manage those issues, including the use of new biorecognition probes, surface functionalization approaches, signal amplification and enhancement strategies, as well as, sophisticated microfluidic solutions.
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Affiliation(s)
- Cesar S. Huertas
- Integrated Photonics and Applications Centre, School of Engineering, Royal Melbourne Institute of Technology University, Melbourne, VIC, Australia
| | - Olalla Calvo-Lozano
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, CIBER-BBN, Barcelona, Spain
| | - Arnan Mitchell
- Integrated Photonics and Applications Centre, School of Engineering, Royal Melbourne Institute of Technology University, Melbourne, VIC, Australia
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, CIBER-BBN, Barcelona, Spain
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25
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Leuermann J, Fernández-Gavela A, Torres-Cubillo A, Postigo S, Sánchez-Postigo A, Lechuga LM, Halir R, Molina-Fernández Í. Optimizing the Limit of Detection of Waveguide-Based Interferometric Biosensor Devices. Sensors (Basel) 2019; 19:s19173671. [PMID: 31450817 PMCID: PMC6749351 DOI: 10.3390/s19173671] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/16/2019] [Accepted: 08/21/2019] [Indexed: 01/13/2023]
Abstract
Waveguide-based photonic sensors provide a unique combination of high sensitivity, compact size and label-free, multiplexed operation. Interferometric configurations furthermore enable a simple, fixed-wavelength read-out making them particularly suitable for low-cost diagnostic and monitoring devices. Their limit of detection, i.e., the lowest analyte concentration that can be reliably observed, mainly depends on the sensors response to small refractive index changes, and the noise in the read-out system. While enhancements in the sensors response have been extensively studied, noise optimization has received much less attention. Here we show that order-of-magnitude enhancements in the limit of detection can be achieved through systematic noise reduction, and demonstrate a limit of detection of ∼10−8RIU with a silicon nitride sensor operating at telecom wavelengths.
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Affiliation(s)
- Jonas Leuermann
- Bionand Center for Nanomedicine and Biotechnology, Parque Tecnológico de Andalucía, 29590 Málaga, Spain.
- Department de Ingeniería de Comunicaciones, Universidad de Málaga, ETSI Telecomunicación, Campus de Teatinos, 29071 Málaga, Spain.
| | | | - Antonia Torres-Cubillo
- Department de Ingeniería de Comunicaciones, Universidad de Málaga, ETSI Telecomunicación, Campus de Teatinos, 29071 Málaga, Spain
| | - Sergio Postigo
- Department de Ingeniería Mecánica, Universidad de Málaga, Térmica y de Fluidos, Escuela de Ingenierías Industriales, Campus de Teatinos, 29071 Málaga, Spain
| | - Alejandro Sánchez-Postigo
- Department de Ingeniería de Comunicaciones, Universidad de Málaga, ETSI Telecomunicación, Campus de Teatinos, 29071 Málaga, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN Campus UAB, 08193 Barcelona, Spain
| | - Robert Halir
- Bionand Center for Nanomedicine and Biotechnology, Parque Tecnológico de Andalucía, 29590 Málaga, Spain
- Department de Ingeniería de Comunicaciones, Universidad de Málaga, ETSI Telecomunicación, Campus de Teatinos, 29071 Málaga, Spain
| | - Íñigo Molina-Fernández
- Bionand Center for Nanomedicine and Biotechnology, Parque Tecnológico de Andalucía, 29590 Málaga, Spain
- Department de Ingeniería de Comunicaciones, Universidad de Málaga, ETSI Telecomunicación, Campus de Teatinos, 29071 Málaga, Spain
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26
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Aviñó A, Jorge AF, Huertas CS, Cova TFGG, Pais A, Lechuga LM, Eritja R, Fabrega C. Aptamer-peptide conjugates as a new strategy to modulate human α-thrombin binding affinity. Biochim Biophys Acta Gen Subj 2019; 1863:1619-1630. [PMID: 31265898 DOI: 10.1016/j.bbagen.2019.06.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/20/2019] [Accepted: 06/27/2019] [Indexed: 12/23/2022]
Abstract
Aptamers are single-stranded RNA or DNA molecules that specifically recognize their targets and have proven valuable for functionalizing sensitive biosensors. α-thrombin is a trypsin-like serine proteinase which plays a crucial role in haemostasis and thrombosis. An abnormal activity or overexpression of this protein is associated with a variety of diseases. A great deal of attention was devoted to the construction of high-throughput biosensors for accurately detect thrombin for the early diagnosis and treatment of related diseases. Herein, we propose a new approach to modulate the interaction between α-thrombin and the aptamer TBA15. To this end, TBA15 was chemically conjugated to two peptide sequences (TBA-G3FIE-Ac and TBA-G3EIF-Ac) corresponding to a short fragment of the acidic region of the human factor V, which is known to interact directly with exosite I. Surface Plasmon Resonance (SPR) results showed enhanced analytical performances of thrombin with TBA-G3EIF-Ac than with TBA wild-type, reaching a limit of detection as low as 44.9 pM. Electrophoresis mobility shift assay (EMSA) corroborated the SPR results. Molecular dynamics (MD) simulations support experimental evidences and provided further insight into thrombin/TBA-peptide interaction. Our findings demonstrate that the combination of TBA15 with key interacting peptides offers good opportunities to produce sensitive devices for thrombin detection and potential candidates to block thrombin activity.
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Affiliation(s)
- Anna Aviñó
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain; Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Jordi Girona 18-26, E-08034 Barcelona, Spain
| | - Andreia F Jorge
- CQC, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - César S Huertas
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, ICN2 Building, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Tânia F G G Cova
- CQC, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Alberto Pais
- CQC, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Laura M Lechuga
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, ICN2 Building, Campus UAB, Bellaterra, 08193 Barcelona, Spain; Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Jordi Girona 18-26, E-08034 Barcelona, Spain
| | - Ramon Eritja
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain; Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Jordi Girona 18-26, E-08034 Barcelona, Spain.
| | - Carme Fabrega
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain; Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Jordi Girona 18-26, E-08034 Barcelona, Spain.
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27
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Dey P, Fabri-Faja N, Calvo-Lozano O, Terborg RA, Belushkin A, Yesilkoy F, Fàbrega A, Ruiz-Rodriguez JC, Ferrer R, González-López JJ, Estévez MC, Altug H, Pruneri V, Lechuga LM. Label-free Bacteria Quantification in Blood Plasma by a Bioprinted Microarray Based Interferometric Point-of-Care Device. ACS Sens 2019; 4:52-60. [PMID: 30525470 DOI: 10.1021/acssensors.8b00789] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Existing clinical methods for bacteria detection lack speed, sensitivity, and, importantly, point-of-care (PoC) applicability. Thus, finding ways to push the sensitivity of clinical PoC biosensing technologies is crucial. Here we report a portable PoC device based on lens-free interferometric microscopy (LIM). The device employs high performance nanoplasmonics and custom bioprinted microarrays and is capable of direct label-free bacteria ( E. coli) quantification. With only one-step sample handling we offer a sample-to-data turnaround time of 40 min. Our technology features detection sensitivity of a single bacterial cell both in buffer and in diluted blood plasma and is intrinsically limited by the number of cells present in the detection volume. When employed in a hospital setting, the device has enabled accurate categorization of sepsis patients (infectious SIRS) from control groups (healthy individuals and noninfectious SIRS patients) without false positives/negatives. User-friendly on-site bacterial clinical diagnosis can thus become a reality.
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Affiliation(s)
- Priyanka Dey
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN, and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Nuria Fabri-Faja
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN, and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Olalla Calvo-Lozano
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN, and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Roland A. Terborg
- ICFO−Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Alexander Belushkin
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Filiz Yesilkoy
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Anna Fàbrega
- Department of Clinical Microbiology, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca, Universitat Autònoma de Barcelona and REIPI, 08035 Barcelona, Spain
| | - Juan Carlos Ruiz-Rodriguez
- Intensive Care Department, Vall d’Hebron University Hospital. Shock, Organ Dysfunction and Resuscitation Research Group, Vall d’Hebron Institut de Recerca, 08035 Barcelona, Spain
| | - Ricard Ferrer
- Intensive Care Department, Vall d’Hebron University Hospital. Shock, Organ Dysfunction and Resuscitation Research Group, Vall d’Hebron Institut de Recerca, 08035 Barcelona, Spain
| | - Juan José González-López
- Department of Clinical Microbiology, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca, Universitat Autònoma de Barcelona and REIPI, 08035 Barcelona, Spain
| | - Maria Carmen Estévez
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN, and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Hatice Altug
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Valerio Pruneri
- ICFO−Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
- ICREA—Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN, and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain
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Abstract
Biosensing of cancer biomarkers enabling early diagnosis of cancer constitutes an essential tool for clinical intervention and application of novel therapies against cancer disease. Optical biosensor instruments as point-of-care (POC) devices and operating under label-free scheme have demonstrated to provide fast, simple, and high-sensitivity assays even at home care environment. Nanoplasmonic biosensors are thought to be a powerful tool for detection of complex analytes of relevant clinical applications. Using high-throughput fabrication techniques, large surface patterned with gold nanodisk structures is obtained showing surface sensitivities with limit of detection (LOD) in the order of picomolar concentration range. Here, we describe two major assay methodologies used for detection of lung and colorectal cancer, respectively. Particularly, we have selected a complementary hybridization DNA/RNA assay for the assessment of two miRNAs (miRNA-210 and miRNA-205) for detection of lung cancer. However, for colorectal cancer we present the detection of four tumor-associated antigen (TAA) biomarkers (MAPKAPK3, PIM-1, STK4, and GTF2B) as possible TAA targets for autoantibody production. Strategies for detecting these biomarkers in real samples such as serum are also presented, demonstrating the capabilities of these assays to be transferred to real clinical settings.
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Affiliation(s)
- Alejandro Portela
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Barcelona, Spain.
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain.
| | - Enelia C Peláez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Barcelona, Spain
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | - Olalla Calvo-Lozano
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Barcelona, Spain
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | - Mari C Estévez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Barcelona, Spain
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Barcelona, Spain
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
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29
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Abstract
Plasmonic biosensors can be conveniently used as portable diagnostic devices for attaining timely and cost-effective clinical outcomes. Nanoplasmonics technology opens the way for sensor miniaturization, multiplexing and point of care testing.
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Affiliation(s)
- Elba Mauriz
- Department of Nursing and Physiotherapy
- Universidad de León
- 24071 León
- Spain
| | - Priyanka Dey
- Nanobiosensors and Bioanalytical Applications Group
- Catalan Institute of Nanoscience and Nanotechnology (ICN2)
- CSIC
- BIST
- and CIBER-BBN
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group
- Catalan Institute of Nanoscience and Nanotechnology (ICN2)
- CSIC
- BIST
- and CIBER-BBN
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30
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Abstract
Introduction: Optical biosensors, particularly those based on nanoplasmonics technology, have emerged in recent decades as a potential solution for disease diagnostics and therapy follow-up at the point-of-care (POC). These biosensor platforms could overcome some of the challenges faced in conventional diagnosis techniques offering label-free assays with immediate results and employing small and user-friendly devices. Areas covered: In this review, we will provide a critical overview of the recent advances in the development of nanoplasmonic biosensors for the POC diagnostics. We focus on those systems with demonstrated capabilities for integration in portable platforms, highlighting some of the most relevant diagnostics applications targeting proteins, nucleic acids, and cells as disease biomarkers. Expert commentary: Despite the attractive features of label-free nanoplasmonic sensors in terms of miniaturization and analytical robustness, the route toward an effective clinical implementation involves the integration of fully automated microfluidic systems for sample processing and analysis, and the optimization of surface biofunctionalization procedures. Additionally, the development of multiplexed sensors for high-throughput analysis and including specific neoantigens and novel biomarkers in detection panels will provide the means for delivering a powerful analytical technology for an accurate and improved medical diagnosis.
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Affiliation(s)
- Maria Soler
- a Nanobiosensors and Bioanalytical Applications Group , Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN , Bellaterra , Barcelona , Spain
| | - Cesar S Huertas
- a Nanobiosensors and Bioanalytical Applications Group , Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN , Bellaterra , Barcelona , Spain.,b School of Engineering , RMIT University , Melbourne , Australia
| | - Laura M Lechuga
- a Nanobiosensors and Bioanalytical Applications Group , Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN , Bellaterra , Barcelona , Spain
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Huertas CS, Aviñó A, Kurachi C, Piqué A, Sandoval J, Eritja R, Esteller M, Lechuga LM. Label-free DNA-methylation detection by direct ds-DNA fragment screening using poly-purine hairpins. Biosens Bioelectron 2018; 120:47-54. [DOI: 10.1016/j.bios.2018.08.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/25/2018] [Accepted: 08/11/2018] [Indexed: 02/06/2023]
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32
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Ramirez-Priego P, Martens D, Elamin AA, Soetaert P, Van Roy W, Vos R, Anton B, Bockstaele R, Becker H, Singh M, Bienstman P, Lechuga LM. Label-Free and Real-Time Detection of Tuberculosis in Human Urine Samples Using a Nanophotonic Point-of-Care Platform. ACS Sens 2018; 3:2079-2086. [PMID: 30269480 DOI: 10.1021/acssensors.8b00393] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Tuberculosis (TB) is the leading global cause of death from a single infectious agent. Registered incidence rates are low, especially in low-resource countries with weak health systems, due to the disadvantages of current diagnostic techniques. A major effort is directed to develop a point-of-care (POC) platform to reduce TB deaths with a prompt and reliable low-cost technique. In the frame of the European POCKET Project, a novel POC platform for the direct and noninvasive detection of TB in human urine was developed. The photonic sensor chip is integrated in a disposable cartridge and is based on a highly sensitive Mach-Zehnder Interferometer (MZI) transducer combined with an on-chip spectral filter. The required elements for the readout are integrated in an instrument prototype, which allows real-time monitoring and data processing. In this work, the novel POC platform has been employed for the direct detection of lipoarabinomannan (LAM), a lipopolysaccharide found in the mycobacterium cell wall. After the optimization of several parameters, a limit of detection of 475 pg/mL (27.14 pM) was achieved using a direct immunoassay in undiluted human urine in less than 15 min. A final validation of the technique was performed using 20 clinical samples from TB patients and healthy donors, allowing the detection of TB in people regardless of HIV coinfection. The results show excellent correlation to those obtained with standard techniques. These promising results demonstrate the high sensitivity, specificity and applicability of our novel POC platform, which could be used during routine check-ups in developing countries.
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Affiliation(s)
- Patricia Ramirez-Priego
- Nanobiosensors
and Bioanalytical Applications Group, Catalan Institute of Nanoscience
and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Daan Martens
- Photonics Research Group, Ghent University/imec, Technologiepark-Zwijnaarde 15, 9052 Ghent, Belgium
- Center for Nano- and Biophotonics, Ghent University, Technologiepark-Zwijnaarde 15, 9052 Ghent, Belgium
| | - Ayssar A. Elamin
- LIONEX Diagnostics and Therapeutics GmbH, Salzdahlumer Str. 196, Building 1A, 38126 Braunschweig, Germany
| | | | | | - Rita Vos
- imec, Kapeldreef 75, 3001 Leuven, Belgium
| | - Birgit Anton
- microfluidic ChipShop GmbH, Stockholmer Str. 20, 07747 Jena, Germany
| | | | - Holger Becker
- microfluidic ChipShop GmbH, Stockholmer Str. 20, 07747 Jena, Germany
| | - Mahavir Singh
- LIONEX Diagnostics and Therapeutics GmbH, Salzdahlumer Str. 196, Building 1A, 38126 Braunschweig, Germany
| | - Peter Bienstman
- Photonics Research Group, Ghent University/imec, Technologiepark-Zwijnaarde 15, 9052 Ghent, Belgium
- Center for Nano- and Biophotonics, Ghent University, Technologiepark-Zwijnaarde 15, 9052 Ghent, Belgium
| | - Laura M. Lechuga
- Nanobiosensors
and Bioanalytical Applications Group, Catalan Institute of Nanoscience
and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
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33
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López-Muñoz GA, Estévez MC, Vázquez-García M, Berenguel-Alonso M, Alonso-Chamarro J, Homs-Corbera A, Lechuga LM. Gold/silver/gold trilayer films on nanostructured polycarbonate substrates for direct and label-free nanoplasmonic biosensing. J Biophotonics 2018; 11:e201800043. [PMID: 29717543 DOI: 10.1002/jbio.201800043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Ultrasmooth gold/silver/gold trilayer nanostructured plasmonic sensors were obtained using commercial Blu-ray optical discs as nanoslits-based flexible polymer substrates. A thin gold film was used as an adhesion and nucleation layer to improve the chemical stability and reduce the surface roughness of the overlying silver film, without increasing ohmic plasmon losses. The structures were physically and optically characterized and compared with nanostructures of single gold layer. Ultrasmooth and chemically stable trilayer nanostructures with a surface roughness <0.5 nm were obtained following a simple and reproducible fabrication process. They showed a figure of merit (FOM) value up to 69.2 RIU-1 which is significantly higher (more than 95%) than the gold monolayer counterpart. Their potential for biosensing was demonstrated by employing the trilayer sensor for the direct and refractometric (label-free) detection of C-reactive protein (CRP) biomarker in undiluted urine achieving a Limit of Detection (LOD) in the pM order.
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Affiliation(s)
- Gerardo A López-Muñoz
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
- CIBER-BBN Networking Center in Bioengineering, Biomaterials and Nanomedicine, Barcelona, Spain
| | - M-Carmen Estévez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
- CIBER-BBN Networking Center in Bioengineering, Biomaterials and Nanomedicine, Barcelona, Spain
| | - Marc Vázquez-García
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Miguel Berenguel-Alonso
- Sensors & Biosensors Group, Department of Chemistry, Autonomous University of Barcelona, Edifici Cn, 08193, Bellaterra, Catalonia, Spain
| | - Julián Alonso-Chamarro
- Sensors & Biosensors Group, Department of Chemistry, Autonomous University of Barcelona, Edifici Cn, 08193, Bellaterra, Catalonia, Spain
| | - Antoni Homs-Corbera
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
- CIBER-BBN Networking Center in Bioengineering, Biomaterials and Nanomedicine, Barcelona, Spain
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Chocarro-Ruiz B, Herranz S, Fernández Gavela A, Sanchís J, Farré M, Marco MP, Lechuga LM. Interferometric nanoimmunosensor for label-free and real-time monitoring of Irgarol 1051 in seawater. Biosens Bioelectron 2018; 117:47-52. [PMID: 29885579 DOI: 10.1016/j.bios.2018.05.044] [Citation(s) in RCA: 12] [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: 03/12/2018] [Revised: 05/14/2018] [Accepted: 05/24/2018] [Indexed: 12/19/2022]
Abstract
An interferometric nanobiosensor for the specific and label-free detection of the pollutant Irgarol 1051 directly in seawater has been settled. Due to the low molecular weight of Irgarol pollutant and its expected low concentration in seawater, the sensor is based on a competitive inhibition immunoassay. Parameters as surface biofunctionalization, concentration of the selective antibody and regeneration conditions have been carefully evaluated. The optimized immunosensor shows a limit of detection of only 3 ng/L, well below the 16 ng/L set by the EU as the maximum allowable concentration in seawater. It can properly operate during 30 assay-regeneration cycles using the same sensor biosurface and with a time-to-result of only 20 min for each cycle. Moreover, the interferometric nanosensor is able to directly detect low concentrations of Irgarol 1051 in seawater without requiring sample pre-treatments and without showing any background signal due to sea matrix effect.
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Affiliation(s)
- Blanca Chocarro-Ruiz
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Bellaterra, Barcelona, Spain
| | - Sonia Herranz
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Bellaterra, Barcelona, Spain
| | - Adrián Fernández Gavela
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Bellaterra, Barcelona, Spain
| | - Josep Sanchís
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/ Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Marinella Farré
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/ Jordi Girona 18-26, 08034 Barcelona, Spain
| | - M Pilar Marco
- Nanobiotechnology for Diagnostics Group (Nb4D), IQAC-CSIC and CIBER-BBN, C/ Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, BIST and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Bellaterra, Barcelona, Spain.
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35
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Kim D, Alvarez M, Lechuga LM, Louis M. Species-specific modulation of food-search behavior by respiration and chemosensation in Drosophila larvae. eLife 2017; 6:27057. [PMID: 28871963 PMCID: PMC5584988 DOI: 10.7554/elife.27057] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 08/08/2017] [Indexed: 12/17/2022] Open
Abstract
Animals explore their environment to encounter suitable food resources. Despite its vital importance, this behavior puts individuals at risk by consuming limited internal energy during locomotion. We have developed a novel assay to investigate how food-search behavior is organized in Drosophila melanogaster larvae dwelling in hydrogels mimicking their natural habitat. We define three main behavioral modes: resting at the gel's surface, digging while feeding near the surface, and apneic dives. In unstimulated conditions, larvae spend most of their time digging. By contrast, deep and long exploratory dives are promoted by olfactory stimulations. Hypoxia and chemical repellents impair diving. We report remarkable differences in the dig-and-dive behavior of D. melanogaster and the fruit-pest D. suzukii. The present paradigm offers an opportunity to study how sensory and physiological cues are integrated to balance the limitations of dwelling in imperfect environmental conditions and the risks associated with searching for potentially more favorable conditions.
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Affiliation(s)
- Daeyeon Kim
- EMBL-CRG Systems Biology Research Unit, Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain
| | - Mar Alvarez
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology, CSIC and The Barcelona Institute of Science and Technology, CIBER-BBN, Barcelona, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology, CSIC and The Barcelona Institute of Science and Technology, CIBER-BBN, Barcelona, Spain
| | - Matthieu Louis
- EMBL-CRG Systems Biology Research Unit, Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain.,Neuroscience Research Institute, University of California, Santa Barbara, Santa Barbara, United States.,Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, Santa Barbara, United States
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36
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Szydzik C, Gavela AF, Herranz S, Roccisano J, Knoerzer M, Thurgood P, Khoshmanesh K, Mitchell A, Lechuga LM. An automated optofluidic biosensor platform combining interferometric sensors and injection moulded microfluidics. Lab Chip 2017; 17:2793-2804. [PMID: 28682395 DOI: 10.1039/c7lc00524e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A primary limitation preventing practical implementation of photonic biosensors within point-of-care platforms is their integration with fluidic automation subsystems. For most diagnostic applications, photonic biosensors require complex fluid handling protocols; this is especially prominent in the case of competitive immunoassays, commonly used for detection of low-concentration, low-molecular weight biomarkers. For this reason, complex automated microfluidic systems are needed to realise the full point-of-care potential of photonic biosensors. To fulfil this requirement, we propose an on-chip valve-based microfluidic automation module, capable of automating such complex fluid handling. This module is realised through application of a PDMS injection moulding fabrication technique, recently described in our previous work, which enables practical fabrication of normally closed pneumatically actuated elastomeric valves. In this work, these valves are configured to achieve multiplexed reagent addressing for an on-chip diaphragm pump, providing the sample and reagent processing capabilities required for automation of cyclic competitive immunoassays. Application of this technique simplifies fabrication and introduces the potential for mass production, bringing point-of-care integration of complex automated microfluidics into the realm of practicality. This module is integrated with a highly sensitive, label-free bimodal waveguide photonic biosensor, and is demonstrated in the context of a proof-of-concept biosensing assay, detecting the low-molecular weight antibiotic tetracycline.
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Affiliation(s)
- C Szydzik
- School of Engineering, RMIT University, Melbourne, Australia
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37
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López-Muñoz GA, Estevez MC, Peláez-Gutierrez EC, Homs-Corbera A, García-Hernandez MC, Imbaud JI, Lechuga LM. A label-free nanostructured plasmonic biosensor based on Blu-ray discs with integrated microfluidics for sensitive biodetection. Biosens Bioelectron 2017; 96:260-267. [PMID: 28501746 DOI: 10.1016/j.bios.2017.05.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [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: 03/03/2017] [Revised: 05/03/2017] [Accepted: 05/09/2017] [Indexed: 12/30/2022]
Abstract
Nanostructure-based plasmonic biosensors have quickly positioned themselves as interesting candidates for the design of portable optical biosensor platforms considering the potential benefits they can offer in integration, miniaturization, multiplexing, and real-time label-free detection. We have developed a simple integrated nanoplasmonic sensor taking advantage of the periodic nanostructured array of commercial Blu-ray discs. Sensors with two gold film thicknesses (50 and 100nm) were fabricated and optically characterized by varying the oblique-angle of the incident light in optical reflectance measurements. Contrary to the use normal light incidence previously reported with other optical discs, we observed an enhancement in sensitivity and a narrowing of the resonant linewidths as the light incidence angle was increased, which could be related to the generation of Fano resonant modes. The new sensors achieve a figure of merit (FOM) up to 35 RIU-1 and a competitive bulk limit of detection (LOD) of 6.3×10-6 RIU. These values significantly improve previously reported results obtained with normal light incidence reflectance measurements using similar structures. The sensor has been combined with versatile, simple, ease to-fabricate microfluidics. The integrated chip is only 1cm2 (including a PDMS flow cell with a 50µm height microfluidic channel fabricated with double-sided adhesive tape) and all the optical components are mounted on a 10cm×10cm portable prototype, illustrating its facile miniaturization, integration and potential portability. Finally, to assess the label-free biosensing capability of the new sensor, we have evaluated the presence of specific antibodies against the GTF2b protein, a tumor-associate antigen (TAA) related to colorectal cancer. We have achieved a LOD in the pM order and have assessed the feasibility of directly measuring biological samples such as human serum.
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Affiliation(s)
- Gerardo A López-Muñoz
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, 08193 Bellaterra, Barcelona, Spain; CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain
| | - M-Carmen Estevez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, 08193 Bellaterra, Barcelona, Spain; CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain.
| | - E Cristina Peláez-Gutierrez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, 08193 Bellaterra, Barcelona, Spain; CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain
| | - Antoni Homs-Corbera
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, 08193 Bellaterra, Barcelona, Spain
| | | | | | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, 08193 Bellaterra, Barcelona, Spain; CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain
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Chocarro-Ruiz B, Fernández-Gavela A, Herranz S, Lechuga LM. Nanophotonic label-free biosensors for environmental monitoring. Curr Opin Biotechnol 2017; 45:175-183. [PMID: 28458110 DOI: 10.1016/j.copbio.2017.03.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/02/2017] [Accepted: 03/03/2017] [Indexed: 12/25/2022]
Abstract
The field of environmental monitoring has experienced a substantial progress in the last years but still the on-site control of contaminants is an elusive problem. In addition, the growing number of pollutant sources is accompanied by an increasing need of having efficient early warning systems. Several years ago biosensor devices emerged as promising environmental monitoring tools, but their level of miniaturization and their fully operation outside the laboratory prevented their use on-site. In the last period, nanophotonic biosensors based on evanescent sensing have emerged as an outstanding choice for portable point-of-care diagnosis thanks to their capability, among others, of miniaturization, multiplexing, label-free detection and integration in lab-on-chip platforms. This review covers the most relevant nanophotonic biosensors which have been proposed (including interferometric waveguides, grating-couplers, microcavity resonators, photonic crystals and localized surface plasmon resonance sensors) and their recent application for environmental surveillance.
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Affiliation(s)
- Blanca Chocarro-Ruiz
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Bellaterra, Barcelona, Spain
| | - Adrián Fernández-Gavela
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Bellaterra, Barcelona, Spain
| | - Sonia Herranz
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Bellaterra, Barcelona, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Bellaterra, Barcelona, Spain.
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39
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Huertas CS, Domínguez-Zotes S, Lechuga LM. Analysis of alternative splicing events for cancer diagnosis using a multiplexing nanophotonic biosensor. Sci Rep 2017; 7:41368. [PMID: 28120920 PMCID: PMC5264646 DOI: 10.1038/srep41368] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 12/20/2016] [Indexed: 11/09/2022] Open
Abstract
Personalized medicine is a promising tool not only for prevention, screening and development of more efficient treatment strategies, but also for diminishing the side effects caused by current therapies. Deciphering gene regulation pathways provides a reliable prognostic analysis to elucidate the origin of grave diseases and facilitate the selection of the most adequate treatment for each individual. Alternative splicing of mRNA precursors is one of these gene regulation pathways and enables cells to generate different protein outputs from the same gene depending on their developmental or homeostatic status. Its deregulation is strongly linked to disease onset and progression constituting a relevant and innovative class of biomarker. Herein we report a highly selective and sensitive nanophotonic biosensor based on the direct monitoring of the aberrant alternative splicing of Fas gene. Unlike conventional methods, the nanobiosensor performs a real-time detection of the specific isoforms in the fM-pM range without any cDNA synthesis or PCR amplification requirements. The nanobiosensor has been proven isoform-specific with no crosshybridization, greatly minimizing detection biases. The demonstrated high sensitivity and specificity make our nanobiosensor ideal for examining significant tumor-associated expression shifts of alternatively spliced isoforms for the early and accurate theranostics of cancer.
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Affiliation(s)
- César S. Huertas
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology, and CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Santos Domínguez-Zotes
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology, and CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology, and CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
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40
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González-Guerrero AB, Maldonado J, Dante S, Grajales D, Lechuga LM. Direct and label-free detection of the human growth hormone in urine by an ultrasensitive bimodal waveguide biosensor. J Biophotonics 2017; 10:61-67. [PMID: 27669684 DOI: 10.1002/jbio.201600154] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 08/19/2016] [Accepted: 09/01/2016] [Indexed: 06/06/2023]
Abstract
A label-free interferometric transducer showing a theoretical detection limit for homogeneous sensing of 5 × 10-8 RIU, being equivalent to a protein mass coverage resolution of 2.8 fg mm-2 , is used to develop a high sensitive biosensor for protein detection. The extreme sensitivity of this transducer combined with a selective bioreceptor layer enables the direct evaluation of the human growth hormone (hGH) in undiluted urine matrix in the 10 pg mL-1 range.
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Affiliation(s)
- Ana Belén González-Guerrero
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Jesús Maldonado
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Stefania Dante
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Daniel Grajales
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193, Barcelona, Spain
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41
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Soler M, Estevez MC, Villar-Vazquez R, Casal JI, Lechuga LM. Label-free nanoplasmonic sensing of tumor-associate autoantibodies for early diagnosis of colorectal cancer. Anal Chim Acta 2016; 930:31-8. [DOI: 10.1016/j.aca.2016.04.059] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/25/2016] [Accepted: 04/30/2016] [Indexed: 12/15/2022]
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Huertas CS, Fariña D, Lechuga LM. Direct and Label-Free Quantification of Micro-RNA-181a at Attomolar Level in Complex Media Using a Nanophotonic Biosensor. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00162] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- César S. Huertas
- Nanobiosensors and Bioanalytical
Applications Group, Catalan Institute of Nanoscience and Nanotechnology
(ICN2), CSIC, The Barcelona Institute of Science and Technology, and CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - David Fariña
- Nanobiosensors and Bioanalytical
Applications Group, Catalan Institute of Nanoscience and Nanotechnology
(ICN2), CSIC, The Barcelona Institute of Science and Technology, and CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Laura M. Lechuga
- Nanobiosensors and Bioanalytical
Applications Group, Catalan Institute of Nanoscience and Nanotechnology
(ICN2), CSIC, The Barcelona Institute of Science and Technology, and CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
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Maldonado J, González-Guerrero AB, Domínguez C, Lechuga LM. Label-free bimodal waveguide immunosensor for rapid diagnosis of bacterial infections in cirrhotic patients. Biosens Bioelectron 2016; 85:310-316. [PMID: 27183281 DOI: 10.1016/j.bios.2016.04.095] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [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: 08/14/2015] [Revised: 04/27/2016] [Accepted: 04/29/2016] [Indexed: 11/26/2022]
Abstract
Spontaneous bacterial peritonitis is an acute bacterial infection of ascitic fluid; it has a high incidence in cirrhotic patients and it is associated with high mortality. In such a situation, early diagnosis and treatment is crucial for the survival of the patient. However, bacterial analysis in ascitic fluid is currently based on culture methods, which are time-consuming and laborious. We report here the application of a photonic interferometer biosensor based on a bimodal waveguide (BiMW) for the rapid and label-free detection of bacteria directly in ascitic fluid. The device consists of a straight waveguide in which two modes of the same polarization interfere while interacting with the external medium through their evanescent fields. A bimolecular event occurring on the sensor area of the device (e.g. capturing bacteria) will differently affect each light mode, inducing a variation in the phase of the light exiting at the output of the waveguide. In this work, we demonstrate the quantitative detection of Bacillus cereus in buffer medium and Escherichia coli in undiluted ascitic fluid from cirrhotic patients. In the case of Bacillus cereus detection, the device was able to specifically detect bacteria at relevant concentrations in 12.5min and in the case of Escherichia coli detection, the analysis time was 25min. Extrapolation of the data demonstrated that the detection limits of the biosensor could reach few bacteria per milliliter. Based on the results obtained, we consider that the BiMW biosensor is positioned as a promising new clinical tool for user-friendly, cost-effective and real-time microbiological analysis.
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Affiliation(s)
- Jesús Maldonado
- Nanobiosensors and Bioanalytical Applications Group. Catalan Institute of Nanoscience and Nanotechnology (ICN2). CSIC and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Barcelona, Bellaterra, Spain
| | - Ana Belén González-Guerrero
- Nanobiosensors and Bioanalytical Applications Group. Catalan Institute of Nanoscience and Nanotechnology (ICN2). CSIC and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Barcelona, Bellaterra, Spain
| | - Carlos Domínguez
- Microelectronic Institute of Barcelona (IMB-CNM), CSIC, Campus UAB, 08193 Barcelona, Bellaterra, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group. Catalan Institute of Nanoscience and Nanotechnology (ICN2). CSIC and CIBER-BBN, Campus UAB, Ed-ICN2, 08193 Barcelona, Bellaterra, Spain.
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Soler M, Estevez MC, Moreno MDL, Cebolla A, Lechuga LM. Label-free SPR detection of gluten peptides in urine for non-invasive celiac disease follow-up. Biosens Bioelectron 2015; 79:158-64. [PMID: 26703993 DOI: 10.1016/j.bios.2015.11.097] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [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: 09/02/2015] [Revised: 11/04/2015] [Accepted: 11/30/2015] [Indexed: 12/27/2022]
Abstract
Motivated by the necessity of new and efficient methods for dietary gluten control of celiac patients, we have developed a simple and highly sensitive SPR biosensor for the detection of gluten peptides in urine. The sensing methodology enables rapid and label-free quantification of the gluten immunogenic peptides (GIP) by using G12 mAb. The overall performance of the biosensor has been in-depth optimized and evaluated in terms of sensitivity, selectivity and reproducibility, reaching a limit of detection of 0.33 ng mL(-1). Besides, the robustness and stability of the methodology permit the continuous use of the biosensor for more than 100 cycles with excellent repeatability. Special efforts have been focused on preventing and minimizing possible interferences coming from urine matrix enabling a direct analysis in this fluid without requiring extraction or purification procedures. Our SPR biosensor has proven to detect and identify gluten consumption by evaluating urine samples from healthy and celiac individuals with different dietary gluten conditions. This novel biosensor methodology represents a novel approach to quantify the digested gluten peptides in human urine with outstanding sensitivity in a rapid and non-invasive manner. Our technique should be considered as a promising opportunity to develop Point-of-Care (POC) devices for an efficient, simple and accurate gluten free diet (GFD) monitoring as well as therapy follow-up of celiac disease patients.
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Affiliation(s)
- Maria Soler
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain; CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain
| | - M-Carmen Estevez
- CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain; Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | - Maria de Lourdes Moreno
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, c/Profesor García González, S/N, 41012 Seville, Spain
| | - Angel Cebolla
- Biomedal S.L., c/Américo Vespucio 5, 41092 Seville, Spain
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain; CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain
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Aviñó A, Huertas CS, Lechuga LM, Eritja R. Sensitive and label-free detection of miRNA-145 by triplex formation. Anal Bioanal Chem 2015; 408:885-93. [DOI: 10.1007/s00216-015-9180-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 10/07/2015] [Accepted: 11/09/2015] [Indexed: 12/01/2022]
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Huertas CS, Carrascosa LG, Bonnal S, Valcárcel J, Lechuga LM. Quantitative evaluation of alternatively spliced mRNA isoforms by label-free real-time plasmonic sensing. Biosens Bioelectron 2015; 78:118-125. [PMID: 26599481 DOI: 10.1016/j.bios.2015.11.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 09/01/2015] [Revised: 10/16/2015] [Accepted: 11/09/2015] [Indexed: 12/12/2022]
Abstract
Alternative splicing of mRNA precursors enables cells to generate different protein outputs from the same gene depending on their developmental or homeostatic status. Its deregulation is strongly linked to disease onset and progression. Current methodologies for monitoring alternative splicing demand elaborate procedures and often present difficulties in discerning between closely related isoforms, e.g. due to cross-hybridization during their detection. Herein, we report a general methodology using a Surface Plasmon Resonance (SPR) biosensor for label-free monitoring of alternative splicing events in real-time, without any cDNA synthesis or PCR amplification requirements. We applied this methodology to RNA isolated from HeLa cells for the quantification of alternatively spliced isoforms of the Fas gene, involved in cancer progression through regulation of programmed cell death. We demonstrate that our methodology is isoform-specific, with virtually no cross-hybridization, achieving limits of detection (LODs) in the picoMolar (pM) range. Similar results were obtained for the detection of the BCL-X gene mRNA isoforms. The results were independently validated by RT-qPCR, with excellent concordance in the determination of isoform ratios. The simplicity and robustness of this biosensor technology can greatly facilitate the exploration of alternative splicing biomarkers in disease diagnosis and therapy.
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Affiliation(s)
- César S Huertas
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - L G Carrascosa
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - S Bonnal
- Centre de Regulació Genòmica and The Barcelona Institute of Science and Technology, 08003 Barcelona, Spain; Universitat Pompeu Fabra, 08003 Barcelona, Spain
| | - J Valcárcel
- Centre de Regulació Genòmica and The Barcelona Institute of Science and Technology, 08003 Barcelona, Spain; Universitat Pompeu Fabra, 08003 Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats, Spain
| | - L M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, CIBER-BBN, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
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Otte MA, Solis-Tinoco V, Prieto P, Borrisé X, Lechuga LM, González MU, Sepulveda B. Tailored Height Gradients in Vertical Nanowire Arrays via Mechanical and Electronic Modulation of Metal-Assisted Chemical Etching. Small 2015; 11:4201-4208. [PMID: 26033973 DOI: 10.1002/smll.201500175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/26/2015] [Indexed: 06/04/2023]
Abstract
In current top-down nanofabrication methodologies the design freedom is generally constrained to the two lateral dimensions, and is only limited by the resolution of the employed nanolithographic technique. However, nanostructure height, which relies on certain mask-dependent material deposition or etching techniques, is usually uniform, and on-chip variation of this parameter is difficult and generally limited to very simple patterns. Herein, a novel nanofabrication methodology is presented, which enables the generation of high aspect-ratio nanostructure arrays with height gradients in arbitrary directions by a single and fast etching process. Based on metal-assisted chemical etching using a catalytic gold layer perforated with nanoholes, it is demonstrated how nanostructure arrays with directional height gradients can be accurately tailored by: (i) the control of the mass transport through the nanohole array, (ii) the mechanical properties of the perforated metal layer, and (iii) the conductive coupling to the surrounding gold film to accelerate the local electrochemical etching process. The proposed technique, enabling 20-fold on-chip variation of nanostructure height in a spatial range of a few micrometers, offers a new tool for the creation of novel types of nano-assemblies and metamaterials with interesting technological applications in fields such as nanophotonics, nanophononics, microfluidics or biomechanics.
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Affiliation(s)
- M A Otte
- NanoBiosensors and Bioanalytical Applications Group, Institut Catala de Nanociencia i Nanotecnologia (ICN2), Consejo Superior de Investigaciones Científicas (CSIC) & CIBER-BBN, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - V Solis-Tinoco
- NanoBiosensors and Bioanalytical Applications Group, Institut Catala de Nanociencia i Nanotecnologia (ICN2), Consejo Superior de Investigaciones Científicas (CSIC) & CIBER-BBN, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - P Prieto
- IMM-Instituto de Microelectrónica de Madrid (CNM-CSIC), Isaac Newton 8, PTM, 28760, Tres Cantos, Madrid, Spain
| | - X Borrisé
- Nanolithography Laboratory, Institut Catala de Nanociencia i Nanotecnologia (ICN2) & CNM-IMB (CSIC), Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - L M Lechuga
- NanoBiosensors and Bioanalytical Applications Group, Institut Catala de Nanociencia i Nanotecnologia (ICN2), Consejo Superior de Investigaciones Científicas (CSIC) & CIBER-BBN, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - M U González
- IMM-Instituto de Microelectrónica de Madrid (CNM-CSIC), Isaac Newton 8, PTM, 28760, Tres Cantos, Madrid, Spain
| | - B Sepulveda
- Magnetic Nanostructures Group, Institut Catala de Nanociencia i Nanotecnologia (ICN2), Consejo Superior de Investigaciones Científicas (CSIC), Campus UAB, Bellaterra, 08193, Barcelona, Spain
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Ramirez JC, Lechuga LM, Gabrielli LH, Hernandez-Figueroa HE. Study of a low-cost trimodal polymer waveguide for interferometric optical biosensors. Opt Express 2015; 23:11985-11994. [PMID: 25969288 DOI: 10.1364/oe.23.011985] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A novel evanescent wave biosensor based on modal interaction between the fundamental mode and the second order mode is proposed and numerically demonstrated. By taking advantage of their symmetries, it is possible to design a device where only the fundamental and the second order modes can propagate, without excitation of the first order mode. With this selection of modes it is possible to achieve a high sensitivity behavior in the biosensor configuration, due to the strong interaction between the evanescent field and the outer surface as compared to previous evanescent wave-based biosensor designs.
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Losoya-Leal A, Estevez MC, Martínez-Chapa SO, Lechuga LM. Design of a surface plasmon resonance immunoassay for therapeutic drug monitoring of amikacin. Talanta 2015; 141:253-8. [PMID: 25966411 DOI: 10.1016/j.talanta.2015.04.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [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: 10/30/2014] [Revised: 03/24/2015] [Accepted: 04/02/2015] [Indexed: 10/23/2022]
Abstract
The therapeutic drug monitoring (TDM) of pharmaceutical drugs with narrow therapeutic ranges is of great importance in the clinical setting. It provides useful information towards the enhancement of drug therapies, aiding in dosage control and toxicity risk management. Amikacin is an aminoglycoside antibiotic commonly used in neonatal therapies that is indicated for TDM due to the toxicity risks inherent in its use. Current techniques for TDM such as high performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS) are costly, time consuming, and cannot be performed at the site of action. Over the last decades, surface plasmon resonance (SPR) biosensors have become increasingly popular in clinical diagnostics due to their ability to detect biomolecular interactions in real-time. We present an SPR-based competitive immunoassay for the detection of the antibiotic amikacin, suitable for TDM in both adults and neonates. We have obtained high specificity and sensitivity levels with an IC50 value of 1.4ng/mL and a limit of detection of 0.13ng/mL, which comfortably comply with the drug's therapeutic range. Simple dilution of serum can therefore be sufficient to analyze low-volume real samples from neonates, increasing the potential of the methodology for TDM. Compared to current TDM conventional methods, this SPR-based immunoassay can provide advantages such as simplicity, potential portability, and label-free measurements with the possibility of high throughput. This work is the foundation towards the development of an integrated, simple use, highly sensitive, fast, and point-of-care sensing platform for the opportune TDM of antibiotics and other drugs in a clinical setting.
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Affiliation(s)
- Adrian Losoya-Leal
- Sensors and Devices Group, School of Engineering and Sciences, Tecnológico de Monterrey, México
| | - M-Carmen Estevez
- CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain; Nanobiosensors and Bioanalytical Applications Group, Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC, 08193 Bellaterra, Barcelona, Spain.
| | - Sergio O Martínez-Chapa
- Sensors and Devices Group, School of Engineering and Sciences, Tecnológico de Monterrey, México
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group, Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC, 08193 Bellaterra, Barcelona, Spain; CIBER-BBN Networking Center on Bioengineering, Biomaterials and Nanomedicine, Spain
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