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Lin M, Wang C, Fan R, Zhao X, Yu L, Lu M, Peng W. Multi-channel prismatic localized surface plasmon resonance biosensor for real-time competitive assay multiple COVID-19 characteristic miRNAs. Talanta 2024; 275:126142. [PMID: 38669961 DOI: 10.1016/j.talanta.2024.126142] [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] [Received: 01/04/2024] [Revised: 04/15/2024] [Accepted: 04/20/2024] [Indexed: 04/28/2024]
Abstract
A multi-channel prismatic localized surface plasmon resonance (LSPR) biosensor was developed for quantitative and real-time detection of multiple COVID-19 characteristic miRNAs. The well-dispersed and dense gold nanoparticles (AuNPs) arrays for LSPR biosensing were fabricated through a nano-thickness diblock copolymer template (BCPT). Both theoretical and experimental analyses were conducted to investigate the effects of particle size, interparticle spacing, and surface coverage on LSPR sensing spectrum and intensity sensitivity of varied AuNPs sizes. A competitive assay strategy was proposed and used for non-amplification miRNA detection with a low limit detection of 3.41 nM, while a four-channel prismatic LSPR system enables parallel detection of multiple miRNAs. Furthermore, this sensing strategy can effectively and specifically identify target miRNA, distinguish mismatched miRNA and interfering miRNA, and exhibit low non-specific adsorption. This BCPT-based LSPR biosensor demonstrates the practicality and potential of a multi-channel, adaptable, and integrated prismatic sensor in medical testing and diagnostic applications.
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Affiliation(s)
- Ming Lin
- Affiliated Cancer Hospital, Dalian University of Technology, Shenyang, 110042, China; School of Physics, Dalian University of Technology, Dalian, 116024, China
| | - Chen Wang
- School of Physics, Dalian University of Technology, Dalian, 116024, China
| | - Ruizhi Fan
- School of Physics, Dalian University of Technology, Dalian, 116024, China
| | - Xinya Zhao
- School of Physics, Dalian University of Technology, Dalian, 116024, China
| | - Li Yu
- School of Physics, Dalian University of Technology, Dalian, 116024, China
| | - Mengdi Lu
- Affiliated Cancer Hospital, Dalian University of Technology, Shenyang, 110042, China; School of Physics, Dalian University of Technology, Dalian, 116024, China.
| | - Wei Peng
- School of Physics, Dalian University of Technology, Dalian, 116024, China
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2
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Domínguez A, Gargallo R, Cuestas-Ayllón C, Grazu V, Fàbrega C, Valiuska S, Noé V, Ciudad CJ, Calderon EJ, de la Fuente JM, Eritja R, Aviñó A. Biophysical evaluation of antiparallel triplexes for biosensing and biomedical applications. Int J Biol Macromol 2024; 264:130540. [PMID: 38430998 DOI: 10.1016/j.ijbiomac.2024.130540] [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] [Received: 12/19/2023] [Revised: 02/07/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024]
Abstract
Polypyrimidine sequences can be targeted by antiparallel clamps forming triplex structures either for biosensing or therapeutic purposes. Despite its successful implementation, their biophysical properties remain to be elusive. In this work, PAGE, circular dichroism and multivariate analysis were used to evaluate the properties of PPRHs directed to SARS-CoV-2 genome. Several PPRHs designed to target various polypyrimidine sites within the viral genome were synthesized. These PPRHs displayed varying binding affinities, influenced by factors such as the length of the PPRH and its GC content. The number and position of pyrimidine interruptions relative to the 4 T loop of the PPRH was found a critical factor, affecting the binding affinity with the corresponding target. Moreover, these factors also showed to affect in the intramolecular and intermolecular equilibria of PPRHs alone and when hybridized to their corresponding targets, highlighting the polymorphic nature of these systems. Finally, the functionality of the PPRHs was evaluated in a thermal lateral flow sensing device showing a good correspondence between their biophysical properties and detection limits. These comprehensive studies contribute to the understanding of the critical factors involved in the design of PPRHs for effective targeting of biologically relevant genomes through the formation of triplex structures under neutral conditions.
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Affiliation(s)
- Arnau Domínguez
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
| | - Raimundo Gargallo
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona (UB), 08028 Barcelona, Spain
| | - Carlos Cuestas-Ayllón
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain; Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas (CSIC), 50018 Zaragoza, Spain
| | - Valeria Grazu
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain; Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas (CSIC), 50018 Zaragoza, Spain
| | - Carme Fàbrega
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
| | - Simonas Valiuska
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences and Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona (UB), 08028 Barcelona, Spain
| | - Véronique Noé
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences and Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona (UB), 08028 Barcelona, Spain
| | - Carlos J Ciudad
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences and Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona (UB), 08028 Barcelona, Spain
| | - Enrique J Calderon
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Sevilla, Spain; Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
| | - Jesús Martínez de la Fuente
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain; Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas (CSIC), 50018 Zaragoza, Spain
| | - Ramon Eritja
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain.
| | - Anna Aviñó
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain.
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3
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Norouzi S, Soltani S, Alipour E. Recent advancements in biosensor designs toward the detection of intestine cancer miRNA biomarkers. Int J Biol Macromol 2023:125509. [PMID: 37364808 DOI: 10.1016/j.ijbiomac.2023.125509] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/28/2023] [Accepted: 06/20/2023] [Indexed: 06/28/2023]
Abstract
Cancer diagnosis and treatment have been of broad interest among scientists in the last decades due to the high death rate, widespread occurrence, and recurrence after treatment. The survival rate of cancer patients depends greatly on early detection and appropriate treatments. Therefore developing new technologies applicable to sensitive and specific methods of cancer detection is an inevitable task for cancer researchers. Abnormal miRNA expression is contributed to severe diseases such as cancers and since their expression level and type differ strictly during carcinogenesis and later metastasis and treatments, the improved detection accuracy of these miRNAs would undoubtedly lead to early diagnosis, prognosis, and targeted therapy. Biosensors are accurate and straightforward analytical devices that have had practical applications especially in the last decade. Their domain is still growing through a combination of attractive nanomaterials and amplification methods, leading to innovative biosensing platforms for the efficient detection of miRNAs as diagnostic and prognostic biomarkers. In this review, we will provide the recent developments in biosensors to detect intestine cancer miRNA biomarkers and also discuss the challenges and outcomings of this field.
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Affiliation(s)
| | - Somaieh Soltani
- Pharmacy faculty, Tabriz University of Medical Sciences, Tabriz, Iran.
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4
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García JF, Reguera D, Valls A, Aviñó A, Dominguez A, Eritja R, Gargallo R. Detection of pyrimidine-rich DNA sequences based on the formation of parallel and antiparallel triplex DNA and fluorescent silver nanoclusters. Spectrochim Acta A Mol Biomol Spectrosc 2023; 297:122752. [PMID: 37084680 DOI: 10.1016/j.saa.2023.122752] [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] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/07/2023] [Accepted: 04/12/2023] [Indexed: 05/03/2023]
Abstract
In this work, the use of DNA-stabilized fluorescent silver nanoclusters for the detection of target pyrimidine-rich DNA sequences by formation of parallel and antiparallel triplex structures is studied by molecular fluorescence spectroscopy. In the case of parallel triplexes, the probe DNA fragments are Watson-Crick stabilized hairpins, and whereas in the case of antiparallel triplexes, the probe fragments are reverse-Hoogsteen clamps. In all cases, the formation of the triplex structures has been assessed by means of polyacrylamide gel electrophoresis, circular dichroism, and molecular fluorescence spectroscopies, as well as multivariate data analysis methods. The results have shown that it is possible the detection of pyrimidine-rich sequences with an acceptable selectivity by using the approach based on the formation of antiparallel triplex structures.
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Affiliation(s)
- Juan Fernando García
- Dept. of Chemical Engineering and Analytical Chemistry, University of Barcelona, Marti i Franquès 1-11, E-08028 Barcelona, Spain
| | - David Reguera
- Dept. of Chemical Engineering and Analytical Chemistry, University of Barcelona, Marti i Franquès 1-11, E-08028 Barcelona, Spain
| | - Andrea Valls
- Dept. of Chemical Engineering and Analytical Chemistry, University of Barcelona, Marti i Franquès 1-11, E-08028 Barcelona, Spain
| | - Anna Aviñó
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), CIBER-BBN, Jordi Girona 18-26, E-08034 Barcelona, Spain
| | - Arnau Dominguez
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), CIBER-BBN, Jordi Girona 18-26, E-08034 Barcelona, Spain
| | - Ramon Eritja
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), CIBER-BBN, Jordi Girona 18-26, E-08034 Barcelona, Spain
| | - Raimundo Gargallo
- Dept. of Chemical Engineering and Analytical Chemistry, University of Barcelona, Marti i Franquès 1-11, E-08028 Barcelona, Spain.
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5
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Zhang M, Yang Y, Xin L, Zhang H, Wu L, Zhu J, Zhu J, Liu S, Wang Z, Chen Q, Yang G. CSDR Coupling with Exo III for Ultrasensitive Electrochemistry Determination of miR-145. Molecules 2023; 28:molecules28052208. [PMID: 36903456 PMCID: PMC10005534 DOI: 10.3390/molecules28052208] [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: 11/30/2022] [Revised: 01/09/2023] [Accepted: 01/13/2023] [Indexed: 03/04/2023] Open
Abstract
Recently, miRNAs have become a promising biomarker for disease diagnostics. miRNA-145 is closely related to strokes. The accuracy determination of miRNA-145 (miR-145) in stroke patients still remains challenging due to its heterogeneity and low abundance, as well as the complexity of the blood matrix. In this work, we developed a novel electrochemical miRNA-145 biosensor via subtly coupling the cascade strand displacement reaction (CSDR), exonuclease III (Exo III), and magnetic nanoparticles (MNPs). The developed electrochemical biosensor can quantitatively detect miRNA-145 ranging from 1 × 102 to 1 × 106 aM with a detection limit as low down as 100 aM. This biosensor also exhibits excellent specificity to distinguish similar miRNA sequences even with single-base differences. It has been successfully applied to distinguish healthy people from stroke patients. The results of this biosensor are consistent with the results of the reverse transcription quantitative polymerase chain reaction (RT-qPCR). The proposed electrochemical biosensor has great potential applications for biomedical research on and clinical diagnosis of strokes.
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Affiliation(s)
- Moli Zhang
- Shenzhen Bao’an Authentic TCM Therapy Hospital, Shenzhen 518102, China
| | - Yang Yang
- Shenzhen Bao’an Authentic TCM Therapy Hospital, Shenzhen 518102, China
| | - Lingyi Xin
- Shenzhen Bao’an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen 518000, China
| | - Hua Zhang
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 430345, China
| | - Lun Wu
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 430345, China
| | - Jun Zhu
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 430345, China
| | - Jing Zhu
- Shenzhen Bao’an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen 518000, China
| | - Shiyun Liu
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 430345, China
| | - Zhaohui Wang
- Shenzhen Bao’an Authentic TCM Therapy Hospital, Shenzhen 518102, China
| | - Qinhua Chen
- Shenzhen Bao’an Authentic TCM Therapy Hospital, Shenzhen 518102, China
- Correspondence: (Q.C.); (G.-y.Y.); Tel.: +86-18671933531 (Q.C.); +86-13971908298 (G.Y.)
| | - Guangyi Yang
- Shenzhen Bao’an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen 518000, China
- Correspondence: (Q.C.); (G.-y.Y.); Tel.: +86-18671933531 (Q.C.); +86-13971908298 (G.Y.)
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6
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Aviñó A, Cuestas-Ayllón C, Gutiérrez-Capitán M, Vilaplana L, Grazu V, Noé V, Balada E, Baldi A, Félix AJ, Aubets E, Valiuska S, Domínguez A, Gargallo R, Eritja R, Marco MP, Fernández-Sánchez C, Martínez de la Fuente J, Ciudad CJ. Detection of SARS-CoV-2 Virus by Triplex Enhanced Nucleic Acid Detection Assay (TENADA). Int J Mol Sci 2022; 23. [PMID: 36499587 DOI: 10.3390/ijms232315258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/27/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
SARS-CoV-2, a positive-strand RNA virus has caused devastating effects. The standard method for COVID diagnosis is based on polymerase chain reaction (PCR). The method needs expensive reagents and equipment and well-trained personnel and takes a few hours to be completed. The search for faster solutions has led to the development of immunological assays based on antibodies that recognize the viral proteins that are faster and do not require any special equipment. Here, we explore an innovative analytical approach based on the sandwich oligonucleotide hybridization which can be adapted to several biosensing devices including thermal lateral flow and electrochemical devices, as well as fluorescent microarrays. Polypurine reverse-Hoogsteen hairpins (PPRHs) oligonucleotides that form high-affinity triplexes with the polypyrimidine target sequences are used for the efficient capture of the viral genome. Then, a second labeled oligonucleotide is used to detect the formation of a trimolecular complex in a similar way to antigen tests. The reached limit of detection is around 0.01 nM (a few femtomoles) without the use of any amplification steps. The triplex enhanced nucleic acid detection assay (TENADA) can be readily adapted for the detection of any pathogen requiring only the knowledge of the pathogen genome sequence.
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7
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Hussain SH, Huertas CS, Mitchell A, Deman AL, Laurenceau E. Biosensors for circulating tumor cells (CTCs)-biomarker detection in lung and prostate cancer: Trends and prospects. Biosens Bioelectron 2022; 197:113770. [PMID: 34768065 DOI: 10.1016/j.bios.2021.113770] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/30/2021] [Accepted: 11/02/2021] [Indexed: 02/07/2023]
Abstract
Cancer is one of the leading cause of death worldwide. Lung cancer (LCa) and prostate cancer (PCa) are the two most common ones particularly among men with about 20% of aggressive metastatic form leading to shorter overall survival. In recent years, circulating tumor cells (CTCs) have been investigated extensively for their role in metastatic progression and their involvement in reduced overall survival and treatment responses. Analysis of these cells and their associated biomarkers as "liquid biopsy" can provide valuable real-time information regarding the disease state and can be a potential avenue for early-stage detection and possible selection of personalized treatments. This review focuses on the role of CTCs and their associated biomarkers in lung and prostate cancer, as well as the shortcomings of conventional methods for their isolation and analysis. To overcome these drawbacks, biosensors are an elegant alternative because they are capable of providing valuable multiplexed information in real-time and analyzing biomarkers at lower concentrations. A comparative analysis of different transducing elements specific for the analysis of cancer cell and cancer biomarkers have been compiled in this review.
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8
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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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9
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Zhang L, Lou Z. Nasopharyngeal carcinoma related miRNA detection through a DSN enzyme assisted tetrahedral probe for more accurate prognosis. RSC Adv 2021; 11:11398-11402. [PMID: 35423657 PMCID: PMC8695942 DOI: 10.1039/d1ra00539a] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 02/28/2021] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs (miRNAs) play a pivotal role in cellular functions and in the development and progression of cancer. Precise quantification of miRNAs from different clinical samples is a challenging but necessary endeavor that is largely neglected by many emerging fluorescence technologies. Herein, we propose here a novel miRNA detection method through a designed tetrahedral probe and DSN enzyme for attached signal amplification. The highlights of the method are calculated as: (i) the tetrahedral probe induced a much higher transfection efficiency than normal probes; (ii) the DSN enzyme-based cleavage ensures amplification and thus leads to a high detection sensitivity. In all, we believe that the proposed method could greatly improve the sensitivity of intracellular miRNA imaging methods and contribute to the fundamental research and prognosis of cancer. MicroRNAs (miRNAs) play a pivotal role in cellular functions and in the development and progression of cancer.![]()
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Affiliation(s)
- Li Zhang
- Department of Otolaryngology, Zhuji Affiliated Hospital of Shaoxing University Zhuji City Zhejiang Province 311800 China
| | - Zhiping Lou
- Department of Otolaryngology, Zhuji Affiliated Hospital of Shaoxing University, Zhuji People's Hospital 9 Jianmin Road, Taozhu Street Zhuji City Zhejiang Province 311800 China +86-057581782153
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10
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Xu S, Lou Z. Ultrasensitive Detection of Nasopharyngeal Carcinoma-Related MiRNA through Garland Rolling Circle Amplification Integrated Catalytic Hairpin Assembly. ACS Omega 2021; 6:6460-6465. [PMID: 33718736 PMCID: PMC7948431 DOI: 10.1021/acsomega.1c00154] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 02/05/2021] [Indexed: 05/24/2023]
Abstract
MiRNA is reported to be closely related to nasopharyngeal carcinoma and has the potential to be a biomarker for the early diagnosis of nasopharyngeal carcinoma. However, the detection of miRNAs remains to be improved, given their complexity and low sensitivity. Herein, we propose here a novel miRNA detection method through the integration of garland RCA and CHA. In detail, the method is composed of two important signal amplification processes. For the first signal amplification process, the target miRNA could initiate garland RCA and then generate a nicking site on the products with the assistance of Nb.BbvCI enzymes. Afterward, a CHA process is induced with a designed H probe through the two signal amplification processes; the method exhibited a much-improved sensitivity. At last, we believe that this method is a promising approach capable of being applied in screening, diagnosing, and prognosticating multiple diseases.
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Affiliation(s)
| | - Zhiping Lou
- . Fax: +86-057581782153. Zhuji People’s Hospital,
9 Jianmin Road, Taozhu Street, Zhuji City, Zhejiang Province, China
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11
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Jebelli A, Oroojalian F, Fathi F, Mokhtarzadeh A, Guardia MDL. Recent advances in surface plasmon resonance biosensors for microRNAs detection. Biosens Bioelectron 2020; 169:112599. [DOI: 10.1016/j.bios.2020.112599] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/29/2020] [Accepted: 09/04/2020] [Indexed: 12/12/2022]
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12
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Pla L, Aviñó A, Eritja R, Ruiz-Gaitán A, Pemán J, Friaza V, Calderón EJ, Aznar E, Martínez-Máñez R, Santiago-Felipe S. Triplex Hybridization-Based Nanosystem for the Rapid Screening of Pneumocystis Pneumonia in Clinical Samples. J Fungi (Basel) 2020; 6:E292. [PMID: 33213011 PMCID: PMC7712664 DOI: 10.3390/jof6040292] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/07/2020] [Accepted: 11/13/2020] [Indexed: 12/15/2022] Open
Abstract
Pneumocystis pneumonia (PcP) is a disease produced by the opportunistic infection of the fungus Pneumocystis jirovecii. As delayed or unsuitable treatments increase the risk of mortality, the development of rapid and accurate diagnostic tools for PcP are of great importance. Unfortunately, current standard methods present severe limitations and are far from adequate. In this work, a time-competitive, sensitive and selective biosensor based on DNA-gated nanomaterials for the identification of P. jirovecii is presented. The biosensor consists of a nanoporous anodic alumina (NAA) scaffold which pores are filled with a dye reporter and capped with specific DNA oligonucleotides. In the presence of P. jirovecii genomic DNA, the gated biosensor is open, and the cargo is delivered to the solution where it is monitored through fluorescence spectroscopy. The use of capping oligonucleotides able to form duplex or triplex with P. jirovecii DNA is studied. The final diagnostic tool shows a limit of detection (LOD) of 1 nM of target complementary DNA and does not require previous amplification steps. The method was applied to identify DNA from P. jirovecii in unmodified bronchoalveolar lavage, nasopharyngeal aspirates, and sputum samples in 60 min. This is a promising alternative method for the routinely diagnosis of Pneumocystis pneumonia.
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Affiliation(s)
- Luis Pla
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (L.P.); (S.S.-F.)
- Unidad Mixta de Investigación en Nanomedicina y Sensores, Instituto de Investigación Sanitaria La Fe, Universitat Politècnica de València, 46022 Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain; (A.A.); (R.E.)
| | - Anna Aviñó
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain; (A.A.); (R.E.)
- Institute for Advanced Chemistry of Catalonia (IQAC), CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Ramón Eritja
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain; (A.A.); (R.E.)
- Institute for Advanced Chemistry of Catalonia (IQAC), CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Alba Ruiz-Gaitán
- Grupo Acreditado de Infección Grave, Instituto de Investigación Sanitaria La Fe and Servicio de Microbiología, Hospital Universitari i Politècnic La Fe, Avenida Fernando Abril Martorell, 46026 Valencia, Spain; (A.R.-G.); (J.P.)
| | - Javier Pemán
- Grupo Acreditado de Infección Grave, Instituto de Investigación Sanitaria La Fe and Servicio de Microbiología, Hospital Universitari i Politècnic La Fe, Avenida Fernando Abril Martorell, 46026 Valencia, Spain; (A.R.-G.); (J.P.)
| | - Vicente Friaza
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, 41013 Sevilla, Spain; (V.F.); (E.J.C.)
| | - Enrique J. Calderón
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, 41013 Sevilla, Spain; (V.F.); (E.J.C.)
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Spain
| | - Elena Aznar
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (L.P.); (S.S.-F.)
- Unidad Mixta de Investigación en Nanomedicina y Sensores, Instituto de Investigación Sanitaria La Fe, Universitat Politècnica de València, 46022 Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain; (A.A.); (R.E.)
- Unidad Mixta UPV-CIPF de Investigación en Mecanismos de Enfermedades y Nanomedicina, Universitat Politècnica de València, Centro de Investigación Príncipe Felipe, 46012 Valencia, Spain
| | - Ramón Martínez-Máñez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (L.P.); (S.S.-F.)
- Unidad Mixta de Investigación en Nanomedicina y Sensores, Instituto de Investigación Sanitaria La Fe, Universitat Politècnica de València, 46022 Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain; (A.A.); (R.E.)
- Unidad Mixta UPV-CIPF de Investigación en Mecanismos de Enfermedades y Nanomedicina, Universitat Politècnica de València, Centro de Investigación Príncipe Felipe, 46012 Valencia, Spain
| | - Sara Santiago-Felipe
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (L.P.); (S.S.-F.)
- Unidad Mixta de Investigación en Nanomedicina y Sensores, Instituto de Investigación Sanitaria La Fe, Universitat Politècnica de València, 46022 Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain; (A.A.); (R.E.)
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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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15
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Liu Y, Li S, Zhang L, Zhao Q, Li N, Wu Y. A sensitive and specific method for microRNA detection and in situ imaging based on a CRISPR–Cas9 modified catalytic hairpin assembly. RSC Adv 2020; 10:28037-28040. [PMID: 35519131 PMCID: PMC9055656 DOI: 10.1039/d0ra03603j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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] [Received: 04/22/2020] [Accepted: 07/11/2020] [Indexed: 12/17/2022] Open
Abstract
We report here a method for the molecular detection of miRNAs in exosomes and imaging in living cells based on CRISPR–Cas9 and catalytic hairpin assembly.
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Affiliation(s)
- Yang Liu
- Department of Clinical Laboratory
- The Third Affiliated Hospital of Jinzhou Medical University
- Jinzhou
- China
| | - Shihong Li
- Department of Clinical Laboratory
- The Third Affiliated Hospital of Jinzhou Medical University
- Jinzhou
- China
| | - Likun Zhang
- Department of Clinical Laboratory
- The Third Affiliated Hospital of Jinzhou Medical University
- Jinzhou
- China
| | - Qian Zhao
- Department of Clinical Laboratory
- The Third Affiliated Hospital of Jinzhou Medical University
- Jinzhou
- China
| | - Nuo Li
- Department of Clinical Laboratory
- The Third Affiliated Hospital of Jinzhou Medical University
- Jinzhou
- China
| | - Yuxin Wu
- Department of Clinical Laboratory
- The Third Affiliated Hospital of Jinzhou Medical University
- Jinzhou
- China
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16
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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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17
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Aviñó A, Eritja R, Ciudad CJ, Noé V. Parallel Clamps and Polypurine Hairpins (PPRH) for Gene Silencing and Triplex‐Affinity Capture: Design, Synthesis, and Use. ACTA ACUST UNITED AC 2019; 77:e78. [DOI: 10.1002/cpnc.78] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
| | | | - Carlos J. Ciudad
- School of Pharmacy and IN2UBUniversity of Barcelona Barcelona Spain
| | - Verónica Noé
- School of Pharmacy and IN2UBUniversity of Barcelona Barcelona Spain
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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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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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Hong L, Lu M, Dinel MP, Blain P, Peng W, Gu H, Masson JF. Hybridization conditions of oligonucleotide-capped gold nanoparticles for SPR sensing of microRNA. Biosens Bioelectron 2018; 109:230-6. [PMID: 29567568 DOI: 10.1016/j.bios.2018.03.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/12/2018] [Accepted: 03/14/2018] [Indexed: 01/22/2023]
Abstract
MicroRNA (miRNA) sensing, especially the miRNA-200 family, is increasingly targeted for cancer diagnostics. As the sensing schemes often rely on nanoparticles functionalized with a specific oligonucleotide, we investigate the hydribization conditions using the common case of surface plasmon resonance (SPR) sensing of miRNA and a gold nanoparticle (Au NP) competitor. In this type of assays, the Au NPs compete with the microRNA to bind the capture probe immobilized on the gold surface. In our study, we simplify and improve the detection procedure by adopting 11-mercaptoundecanoic acid (11-MUA) as linker to the gold surface, not only omitting the blocking step of 6-mercapto-1-hexanol (MCH), but also increasing the probe density. We report that the response in our SPR sensing studies increased with the size of Au NPs according to the plasmon ruler equation, but the larger AuNPs of 32 nm lacked colloidal stability. In addition, decreasing the ratio of oligonucleotide to Au NPs and the addition of polyethylene glycol (PEG) to hybridization buffer also favored a better response in SPR sensing of miRNA. The optimization led to an improved detection sensitivity in our competition method and a detection limit as low as 500 pM for miRNA-200b without amplification of miRNA and use of other amplification schemes.
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Kalogianni DP, Kalligosfyri PM, Kyriakou IK, Christopoulos TK. Advances in microRNA analysis. Anal Bioanal Chem 2017; 410:695-713. [DOI: 10.1007/s00216-017-0632-z] [Citation(s) in RCA: 34] [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: 07/01/2017] [Revised: 08/28/2017] [Accepted: 09/11/2017] [Indexed: 12/14/2022]
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Ma C, Liu H, Wu K, Chen M, Zheng L, Wang J. An Exonuclease I-Based Quencher-Free Fluorescent Method Using DNA Hairpin Probes for Rapid Detection of MicroRNA. Sensors (Basel) 2017; 17:s17040760. [PMID: 28368358 PMCID: PMC5421720 DOI: 10.3390/s17040760] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/26/2017] [Accepted: 03/31/2017] [Indexed: 12/17/2022]
Abstract
MicroRNAs (miRNAs) act as biomarkers for the diagnosis of a variety of cancers. Since the currently used methods for miRNA detection have limitations, simple, sensitive, and cost-effective methods for the detection of miRNA are required. This work demonstrates a facile, quencher-free, fluorescence-based analytical method for cost-effective and sensitive detection of miRNA using a super 2-aminopurine (2-AP)-labeled hairpin probe (HP) and exonuclease I activity. Specifically, the fluorescence of 2-AP is strongly quenched when it is incorporated within DNA. In the presence of a target miRNA, HP attains an open conformation by hybridizing with the target miRNA to form a double-stranded structure with a protruding 3′-terminus. Next, the digestion of the protruding 3′-terminus is triggered by exonuclease I, during which 2-AP is released free in solution from the DNA, thereby increasing fluorescence. This method is highly sensitive, with a detection limit of 0.5 nM—10 times lower than a previously reported quencher-free fluorescence method. Furthermore, this method has potential applications in clinical diagnosis and biomedical research.
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Affiliation(s)
- Changbei Ma
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410013, China.
| | - Haisheng Liu
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410013, China.
| | - Kefeng Wu
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410013, China.
| | - Mingjian Chen
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410013, China.
| | - Liyang Zheng
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410013, China.
| | - Jun Wang
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410013, China.
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Lísalová H, Brynda E, Houska M, Víšová I, Mrkvová K, Song XC, Gedeonová E, Surman F, Riedel T, Pop-Georgievski O, Homola J. Ultralow-Fouling Behavior of Biorecognition Coatings Based on Carboxy-Functional Brushes of Zwitterionic Homo- and Copolymers in Blood Plasma: Functionalization Matters. Anal Chem 2017; 89:3524-3531. [PMID: 28233990 DOI: 10.1021/acs.analchem.6b04731] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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]
Abstract
Fouling from complex biological fluids such as blood plasma to biorecognition element (BRE)-functionalized coatings hampers the use of affinity biosensor technologies in medical diagnostics. Here, we report the effects the molecular mechanisms involved in functionalization of low-fouling carboxy-functional coatings have on the BRE capacity and resistance to fouling from blood plasma. The specific mechanisms of EDC/NHS activation of carboxy groups, BRE attachment, and deactivation of residual activated groups on recently developed ultra-low-fouling carboxybetaine polymer and copolymer brushes (pCB) as well as conventional carboxy-terminated oligo(ethylene glycol)-based alkanethiolate self-assembled monolayers (OEG-SAMs) are studied using the polarization modulation infrared reflection/absorption spectroscopy, X-ray photoelectron spectroscopy, and surface plasmon resonance methods. It is shown that the fouling resistance of BRE-functionalized pCB coatings is strongly influenced by a deactivation method affecting the ultra-low-fouling molecular structure of the brush and surface charges. It is revealed that, in contrast to free carboxy-group-terminated OEG-SAMs, only a partial deactivation of EDC/NHS-activated zwitterionic carboxy groups by spontaneous hydrolysis is possible in the pCB brushes. The fouling resistance of activated/BRE-functionalized pCB is shown to be recovered only by covalent attachment of amino acid deactivation agents to residual activated carboxy groups of pCB. The developed deactivation procedure is further combined with ultra-low-fouling brushes of random copolymer carboxybetaine methacrylamide (CBMAA) and N-(2-hydroxypropyl) methacrylamide (HPMAA) with optimized CBMAA content (15%) providing a BRE-functionalized coating with superior fouling resistance over various carboxy-functional low-fouling coatings including homopolymer pCB brushes and OEG-SAMs. The biorecognition capabilities of pHPMAA-CBMAA(15%) are demonstrated via the sensitive label-free detection of a microRNA cancer biomarker (miR-16) in blood plasma.
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Affiliation(s)
- Hana Lísalová
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague 182 51, Czech Republic
| | - Eduard Brynda
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague 162 00, Czech Republic
| | - Milan Houska
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague 162 00, Czech Republic
| | - Ivana Víšová
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague 182 51, Czech Republic
| | - Kateřina Mrkvová
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague 182 51, Czech Republic
| | - Xue Chadtová Song
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague 182 51, Czech Republic
| | - Erika Gedeonová
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague 182 51, Czech Republic
| | - František Surman
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague 162 00, Czech Republic
| | - Tomáš Riedel
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague 162 00, Czech Republic
| | - Ognen Pop-Georgievski
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague 162 00, Czech Republic
| | - Jiří Homola
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague 182 51, Czech Republic
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