1
|
Yaiwong P, Iamsawat K, Wiratchan S, Jumpathong W, Semakul N, Bamrungsap S, Jakmunee J, Ounnunkad K. A toluidine blue/porous organic polymer/2D MoSe 2 nanocomposite as an electrochemical signaling platform for a sensitive label-free aflatoxin B1 bioassay in some crops. Food Chem 2024; 439:138147. [PMID: 38070230 DOI: 10.1016/j.foodchem.2023.138147] [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: 07/28/2023] [Revised: 11/03/2023] [Accepted: 12/03/2023] [Indexed: 01/10/2024]
Abstract
A label-free electrochemical immunosensor using a toluidine blue (TB)/porous organic polymer (POP)/two-dimensional molybdenum diselenide (2D MoSe2) nanocomposite is developed for highly sensitive detection of aflatoxin B1 (AFB1) in selected crops. A POP/2D MoSe2 composite material is employed to modify the surface of a screen-printed carbon electrode (SPCE). Subsequently, TB is adsorbed on the modified SPCE surface, and the resulting TB/POP/2D MoSe2 composite is then used to construct a biosensor. The new POP/2D MoSe2 nanocomposite offers a high surface-to-volume area and is a good electroactive and biocompatible adsorbent for loading TB probe and capture antibodies. Adsorbed TB onto the POP/2D MoSe2 nanocomposite is utilized as a redox probe for the signal amplification unit. This TB/POP/2D MoSe2 nanocomposite provides good electron transfer properties of TB redox probe, good electrical conductivity, good biocompatibility, and likable adsorption ability, thus obtaining a sufficient immobilization quantity of antibodies for the sensor construction. After immobilization of the anti-AFB1 antibody and blocking with BSA on the composite surface, the immunosensor is obtained for the detection of AFB1. Under optimum conditions, the sensor shows a linear logarithmic range of 2.5-40 ng mL-1 with a limit of detection (LOD) of 0.40 ng mL-1. The developed sensor provides several advantages in terms of simplicity, low cost, short analysis time, high selectivity, stability, and reproducibility. Additionally, the proposed immunosensor is successfully validated by the detection of AFB1 in rice, corn, and peanut samples. Utilizing the TB/POP/2D MoSe2 nanocomposite, this label-free electrochemical immunosensor demonstrates outstanding sensitivity and selectivity in detecting AFB1, making it a valuable tool for ensuring the safety of agricultural products and enhancing food security.
Collapse
Affiliation(s)
- Patrawadee Yaiwong
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; The Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kamonluck Iamsawat
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sirakorn Wiratchan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | | | - Natthawat Semakul
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
| | - Jaroon Jakmunee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kontad Ounnunkad
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
| |
Collapse
|
2
|
Wiriyachaiporn N, Kongrueng J, Sukkuea K, Tanrattanawong R, Vanichtanankul J, Saeyang T, Jantra T, Japrung D, Maneeprakorn W, Bamrungsap S, Janchompoo P, Pasomsub E. Characterizing a visual lateral flow device for rapid SARS-CoV-2 virus protein detection: pre-clinical and system assessment. Anal Methods 2024. [PMID: 38634326 DOI: 10.1039/d3ay02075d] [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] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infections have affected more than 769 million individuals worldwide over the last few years. Although the pandemic is transitioning into an endemic, the COVID-19 outbreak is still a global concern. A rapid screening platform is needed for effective preventive and control measures. Herein, a visual rapid lateral flow platform for SARS-CoV-2 nucleocapsid protein detection is developed. Under optimal conditions, the system demonstrated good detection sensitivity and selectivity against tested respiratory viruses. The system provides direct visual detection with a limit of 0.7 ng of the nucleocapsid protein per mL of a sample (0.7 ng mL-1) within 15 minutes. Further, a correlation between direct visual detection and semi-quantitative analysis using a reader showed a similar detection limit (R2 = 0.9571). The repeatability and reproducibility studies highlighted the potential of the system for the rapid screening of SARS-CoV-2 infection, with variations within 5% and 10% at high and low protein concentrations, respectively. Subsequent pre-clinical validation to correlate the performance with the standard molecular approach (RT-PCR) using 170 nasopharyngeal swabs demonstrated 98% estimated sensitivity (95% CI, 89.35-99.95%) and 100% specificity (95% CI, 96.38-100%). The positive and negative predictive values were reported to be 100% and 99%, respectively, with an accuracy of 99.3%. With high viral load samples (Ct value ≤25, n = 47), the system demonstrated 100% detection sensitivity and specificity. The proposed technique provides a valuable platform for potential use in rapid screening, particularly during pandemics, where diagnostic capacity and mass screening are crucial.
Collapse
Affiliation(s)
- Natpapas Wiriyachaiporn
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Jetnapang Kongrueng
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Kannika Sukkuea
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Rattana Tanrattanawong
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Jarunee Vanichtanankul
- National Center of Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Thanaya Saeyang
- National Center of Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Tararat Jantra
- National Center of Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Deanpen Japrung
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Weerakanya Maneeprakorn
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Pareena Janchompoo
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Ekawat Pasomsub
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| |
Collapse
|
3
|
Viriyakitpattana N, Rattanabut C, Lertvachirapaiboon C, Pimalai D, Bamrungsap S. Layer-by-Layer Biopolymer Assembly for the In Situ Fabrication of AuNP Plasmonic Paper-A SERS Substrate for Food Adulteration Detection. ACS Omega 2024; 9:10099-10109. [PMID: 38463332 PMCID: PMC10918676 DOI: 10.1021/acsomega.3c05966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 03/12/2024]
Abstract
Here, we introduce an environmentally friendly approach to fabricate a simple and cost-effective plasmonic paper for detecting food additives using surface-enhanced Raman spectroscopy (SERS). The plasmonic paper is fabricated by in situ growth of gold nanoparticles (AuNPs) on filter paper (FP). To facilitate this green fabrication process, we applied a double-layered coating of biopolymers, chitosan (CS) and alginate (ALG), onto the FP using a layer-by-layer (LbL) assembly through electrostatic interactions. Compared to single-layer biopolymer coatings, double-layered biopolymer-coated paper, ALG/CS/FP, significantly improves the reduction properties. Consequently, effective in situ growth of AuNPs can be achieved as seen in high density of AuNP formation on the substrate. The resulting plasmonic paper provides high SERS performance with an enhancement factor (EF) of 5.7 × 1010 and a low limit of detection (LOD) as low as 1.37 × 10-12 M 4-mercaptobenzoic acid (4-MBA). Furthermore, it exhibits spot-to-spot reproducibility with a relative standard deviation (RSD) of 8.2% for SERS analysis and long-term stability over 50 days. This paper-based SERS substrate is applied for melamine (MEL) detection with a low detection limit of 0.2 ppb, which is sufficient for monitoring MEL contamination in milk based on food regulations. Additionally, we demonstrate a simultaneous detection of β-agonists, including ractopamine (RAC) and salbutamol (SAL), exhibiting the multiplexing capability and versatility of the plasmonic paper in food contaminant analysis. The development of this simple plasmonic paper through the LbL biopolymer assembly not only paves the way for novel SERS substrate fabrication but also broadens the application of SERS technology in food contaminant monitoring.
Collapse
Affiliation(s)
- Nopparat Viriyakitpattana
- National
Nanotechnology Center, National Science
and Technology Development Agency, Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
- Thai
Packaging Centre, Thailand Institute of
Scientific and Technological Research, Phahonyothin Road, Chatuchak, Bangkok 10900, Thailand
| | - Chanoknan Rattanabut
- National
Nanotechnology Center, National Science
and Technology Development Agency, Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Chutiparn Lertvachirapaiboon
- National
Nanotechnology Center, National Science
and Technology Development Agency, Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Dechnarong Pimalai
- National
Nanotechnology Center, National Science
and Technology Development Agency, Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Suwussa Bamrungsap
- National
Nanotechnology Center, National Science
and Technology Development Agency, Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| |
Collapse
|
4
|
Yaiwong P, Anuthum S, Sangthong P, Jakmunee J, Bamrungsap S, Ounnunkad K. A new portable toluidine blue/aptamer complex-on-polyethyleneimine-coated gold nanoparticles-based sensor for label-free electrochemical detection of alpha-fetoprotein. Front Bioeng Biotechnol 2023; 11:1182880. [PMID: 37284243 PMCID: PMC10239980 DOI: 10.3389/fbioe.2023.1182880] [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: 03/09/2023] [Accepted: 04/28/2023] [Indexed: 06/08/2023] Open
Abstract
The quantification of alpha-fetoprotein (AFP) as a potential liver cancer biomarker which is generally found in ultratrace level is of significance in biomedical diagnostics. Therefore, it is challenging to find a strategy to fabricate a highly sensitive electrochemical device towards AFP detection through electrode modification for signal generation and amplification. This work shows the construction of a simple, reliable, highly sensitive, and label-free aptasensor based on polyethyleneimine-coated gold nanoparticles (PEI-AuNPs). A disposable ItalSens screen-printed electrode (SPE) is employed for fabricating the sensor by successive modifying with PEI-AuNPs, aptamer, bovine serum albumin (BSA), and toluidine blue (TB), respectively. The AFP assay is easily performed when the electrode is inserted into a small Sensit/Smart potentiostat connected to a smartphone. The readout signal of the aptasensor derives from the electrochemical response of TB intercalating into the aptamer-modified electrode after binding with the target. The decrease in current response of the proposed sensor is proportional to the AFP concentration due to the restriction of the electron transfer pathway of TB by a number of insulating AFP/aptamer complexes on the electrode surface. PEI-AuNPs improve SPE's reactivity and provide a large surface area for aptamer immobilization whereas aptamer provides selectivity to the target AFP. Consequently, this electrochemical biosensor is highly sensitive and selective for AFP analysis. The developed assay reveals a linear range of detection from 10 to 50000 pg mL-1 with R 2 = 0.9977 and provided a limit of detection (LOD) of 9.5 pg mL-1 in human serum. With its simplicity and robustness, it is anticipated that this electrochemical-based aptasensor will be a benefit for the clinical diagnosis of liver cancer and further developed for other biomarkers analysis.
Collapse
Affiliation(s)
- Patrawadee Yaiwong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- The Graduate School, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn Anuthum
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- The Graduate School, Chiang Mai University, Chiang Mai, Thailand
| | - Padchanee Sangthong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Jaroon Jakmunee
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Kontad Ounnunkad
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| |
Collapse
|
5
|
Khumsap T, Bamrungsap S, Thu VT, Nguyen LT. Development of epitope-imprinted polydopamine magnetic nanoparticles for selective recognition of allergenic egg ovalbumin. Chem Pap 2022. [DOI: 10.1007/s11696-022-02291-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Treerattrakoon K, Roeksrungruang P, Dharakul T, Japrung D, Faulds K, Graham D, Bamrungsap S. Detection of a miRNA biomarker for cancer diagnosis using SERS tags and magnetic separation. Anal Methods 2022; 14:1938-1945. [PMID: 35441184 DOI: 10.1039/d2ay00210h] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Detection of miR-29a, a biomarker of cancers, using SERS tags and magnetic separation is described. The assay was designed to detect the miR-29a sequence by taking the complementary sequence and splitting it into a capture and detection probe. The SERS tags comprised the highly Raman active molecule 4-mercaptobenzoic acid (4-MBA) and DNA detection probes assembled onto the surface of gold nanorods (AuNRs) through the self-assembly process. The capture DNA conjugated magnetic nanoparticles (MNPs) were applied as capture probes. The detection was based on the hybridisation and sandwich complex formation. The resultant hybridisation-dependent complexes were recovered and enriched from the samples by magnetic separation. The enriched solution containing target miRNA hybridised with capture probes were dropped on a foil-covered slide to form a droplet for SERS analysis. A characteristic spectrum of 4-MBA was observed to indicate the presence of the miR-29a in the samples. The sensitivity of the assay is examined by measuring the SERS signal of the samples containing different concentrations of the miR-29a. The SERS intensity appears to increase with the concentration of miR-29a. The limit of detection (LOD) was found to be 10 pM without any amplification process. In addition, the selectivity and feasibility of the assay in complex media are evaluated with the non-target miRNAs comprising different sequences from the target miR-29a. The system was capable of detecting the target miR-29a specifically with high selectivity. These results suggest that this solution-based SERS platform has a significant capability for simple, sensitive, and selective miR-29a analysis.
Collapse
Affiliation(s)
- Kiatnida Treerattrakoon
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, UK
| | - Pimporn Roeksrungruang
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | - Tararaj Dharakul
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Deanpen Japrung
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | - Karen Faulds
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, UK
| | - Duncan Graham
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, UK
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| |
Collapse
|
7
|
Ponlamuangdee K, Rattanabut C, Viriyakitpattana N, Roeksrungruang P, Karn-Orachai K, Pimalai D, Bamrungsap S. Fabrication of paper-based SERS substrate using a simple vacuum filtration system for pesticides detection. Anal Methods 2022; 14:1765-1773. [PMID: 35470360 DOI: 10.1039/d2ay00236a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Herein, we describe a simple and cost-effective fabrication of a paper-based SERS substrate by coating poly(diallyldimethylammonium chloride) (PDADMAC) and gold nanostars (AuNSs) on the filter paper using a vacuum filtration system. The paper-based SERS substrates were fabricated and ready to be used within an hour without any complicated equipment or processes. The cationic polymer, PDADAMAC, was pretreated on the filter paper to improve the absorbability of negatively charged AuNSs through electrostatic interaction. The PDADMAC/AuNS paper significantly intensified the SERS signal of 4-mercaptobenzoic acid (4-MBA) compared to that of pure AuNS-coated paper due to the high density of AuNSs absorbed on the SERS substrate. The PDADMAC/AuNS paper substrate provided a SERS enhancement factor (EF) of 1.08 × 107 with a low detection limit of 1 nM 4-MBA. The substrate shows excellent spot-to-spot reproducibility with a relative standard deviation (RSD) of 5.03%, and substrate-to-substrate reproducibility with an RSD of 3.20% for the Raman shift at 1080 cm-1. The paper substrate was then applied for the rapid detection of pesticides with a low detection limit of 0.51 μM (0.13 ppm) for paraquat, and 0.38 μM (0.09 ppm) for thiram, using a handheld Raman spectrometer. The development of this simple and cost-effective paper-based SERS substrate, and its applications for on-site monitoring of pesticides, could be beneficial for food security and environmental safety.
Collapse
Affiliation(s)
- Kanyawan Ponlamuangdee
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | - Chanoknan Rattanabut
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | - Nopparat Viriyakitpattana
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | - Pimporn Roeksrungruang
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | - Kullavadee Karn-Orachai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | - Dechnarong Pimalai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| |
Collapse
|
8
|
Pothipor C, Bamrungsap S, Jakmunee J, Ounnunkad K. A gold nanoparticle-dye/poly(3-aminobenzylamine)/two dimensional MoSe 2/graphene oxide electrode towards label-free electrochemical biosensor for simultaneous dual-mode detection of cancer antigen 15-3 and microRNA-21. Colloids Surf B Biointerfaces 2021; 210:112260. [PMID: 34894598 DOI: 10.1016/j.colsurfb.2021.112260] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 09/26/2021] [Revised: 11/25/2021] [Accepted: 12/02/2021] [Indexed: 12/11/2022]
Abstract
A dual-mode electrochemical biosensor is successfully developed for simultaneous detection of two different kinds of breast cancer biomarkers, namely cancer antigen 15-3 (CA 15-3) and microRNA-21 (miRNA-21), for the first time. The sensor composes of a poly(3-aminobenzylamine)/two-dimensional (2D) molybdenum selenide/graphene oxide nanocomposite modified two-screen-printed carbon electrode array (dual electrode), functionalized individually with 2,3-diaminophenazine-gold nanoparticles and toluidine blue-gold nanoparticles. Both kinds of the redox probe-gold nanoparticles are employed as signaling molecules and supports for immobilization of anti-CA 15-3 antibodies and capture DNA-21 probes, respectively. Due to the good conductivity and high surface-to-volume ratio of the nanocomposite, high amount of the antibodies and capture probes can be immobilized on the modified dual-electrode, giving the efficient duplex detection. Consequently, the biosensor provides good selectivity, and high sensitivity for the dual target analyte detection. The experimental results show that this label-free biosensor exhibits good linear responses to the concentrations of both target analytes with the limits of detection (LODs) of 0.14 U mL-1 and 1.2 fM for CA 15-3 and miRNA-21, respectively. This assay strategy has a great potential to be further developed for the simultaneous detection of a variety of miRNAs and protein biomarkers for point-of-care (POC) diagnostic applications.
Collapse
Affiliation(s)
- Chammari Pothipor
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; The Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Jaroon Jakmunee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kontad Ounnunkad
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand.
| |
Collapse
|
9
|
Yaiwong P, Semakul N, Bamrungsap S, Jakmunee J, Ounnunkad K. Electrochemical detection of matrix metalloproteinase-7 using an immunoassay on a methylene blue/2D MoS 2/graphene oxide electrode. Bioelectrochemistry 2021; 142:107944. [PMID: 34500138 DOI: 10.1016/j.bioelechem.2021.107944] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 02/08/2023]
Abstract
Methylene blue (MB) adsorption onto a two-dimensional molybdenum disulfide (2D MoS2)/graphene oxide (GO) nanocomposite sitting on a screen-printed carbon electrode (SPCE) is used to develop a new sensitive label-free electrochemical immunosensor for the detection of matrix metalloproteinase-7 (MMP-7) cancer biomarkers. The 2D MoS2/GO nanocomposite deposited onto an SPCE provides a large specific surface area, fast electron transfer, and exceptional electrical conductivity. Furthermore, MB adsorbed onto the 2D MoS2/GO nanocomposite architecture can be used for signal amplification in electrochemical immunosensors. Moreover, an immunosensor platform was fabricated by the adsorption of anti-MMP-7 capture antibodies onto the MB/2D MoS2/GO nanocomposite surface via electrostatic interactions for the detection of the MMP-7 immunocomplex. Under optimum conditions, the label-free immunosensor exhibits a decrease in the current response for MB corresponding to the MMP-7 concentration. The sensor affords a linear logarithmic range of 0.010-75 ng mL-1 with a limit of detection (LOD) of 0.007 ng mL-1. The developed electrochemical immunosensor provides high selectivity, good reproducibility, and excellent stability. Furthermore, the proposed immunosensor can be applied for the detection of MMP-7 in human serum samples with good recovery. Thus, this device can be applied for the early clinical diagnosis of pancreatic and colorectal cancers.
Collapse
Affiliation(s)
- Patrawadee Yaiwong
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; The Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Natthawat Semakul
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Jaroon Jakmunee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kontad Ounnunkad
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand.
| |
Collapse
|
10
|
Pothipor C, Jakmunee J, Bamrungsap S, Ounnunkad K. An electrochemical biosensor for simultaneous detection of breast cancer clinically related microRNAs based on a gold nanoparticles/graphene quantum dots/graphene oxide film. Analyst 2021; 146:4000-4009. [PMID: 34013303 DOI: 10.1039/d1an00436k] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A label-free multiplexed electrochemical biosensor based on a gold nanoparticles/graphene quantum dots/graphene oxide (AuNPs/GQDs/GO) modified three-screen-printed carbon electrode (3SPCE) array is successfully constructed to detect miRNA-21, miRNA-155, and miRNA-210 biomarkers for the first time. Redox species (anthraquinone (AQ), methylene blue (MB), and polydopamine (PDA)) are used as redox indicators for anchoring capture miRNA probes, which hybridize with the complementary targets, miRNA-21, miRNA-155, and miRNA-210, respectively. After three target miRNAs are present, the square wave voltammetry (SWV) scan displays three well-separated peaks. Each peak indicates the presence of one miRNA, and its intensity quantitatively correlates with the concentration of the corresponding target analyte. This phenomenon results in the substantial decline of the SWV peak current of the redox probes. The developed AuNPs/GQDs/GO-based biosensor reveals excellent performance for simultaneous miRNA sensing. It offers a wide linear dynamic range from 0.001 to 1000 pM with ultrasensitive low detection limits of 0.04, 0.33, and 0.28 fM for the detection of miRNA-21, miRNA-155, and miRNA-210, respectively. It also presents high selectivity and applicability for the detection of miRNAs in human serum samples. This multiplex label-free miRNA biosensor has great potential for applications in breast cancer diagnosis.
Collapse
Affiliation(s)
- Chammari Pothipor
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. and The Graduate School, Chiang Mai University, Chiang Mai, 50200, Thailand and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Jaroon Jakmunee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Kontad Ounnunkad
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai, 50200, Thailand and Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand
| |
Collapse
|
11
|
Wiriyachaiporn N, Sirikaew S, Chitchai N, Janchompoo P, Maneeprakorn W, Bamrungsap S, Pasomsub E, Japrung D. Pre-clinically evaluated visual lateral flow platform using influenza A and B nucleoprotein as a model and its potential applications. RSC Adv 2021; 11:18597-18604. [PMID: 35480952 PMCID: PMC9033468 DOI: 10.1039/d1ra01361k] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 05/08/2021] [Indexed: 12/26/2022] Open
Abstract
A visual colorimetric rapid screening system based on a lateral flow device for simultaneous detection and differentiation between influenza A and B nucleoprotein as a model was developed. Monoclonal antibodies, specific for either influenza A or B nucleoproteins, were evaluated for their reactivities and were used as targeting ligands. With the best antibody pairs selected, the system exhibited good specificity to both viruses without cross reactivity to other closely related respiratory viruses. Further semi-quantitative analysis using a strip reader revealed that the system is capable of detecting influenza A and B protein content as low as 0.04 and 1 ng per test, respectively, using a sample volume as low as 100 μL, within 10 minutes (R2 = 0.9652 and 0.9718). With a performance comparison to the commercial tests, the system demonstrated a four-to-eight-fold higher sensitivity. Pre-clinical evaluation with 101 nasopharyngeal swabs reveals correlated results with a standard molecular approach, with 89% and 83% sensitivity towards influenza A and B viruses, and 100% specificity for both viruses. Visual colorimetric rapid screening system based on lateral flow device for influenza A and B virus detection as a model and its pre-clinical evaluation.![]()
Collapse
Affiliation(s)
- Natpapas Wiriyachaiporn
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| | - Siriwan Sirikaew
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| | - Nawakarn Chitchai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand .,Faculty of Pharmacy, Thammasat University Thailand
| | - Pareena Janchompoo
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
| | - Weerakanya Maneeprakorn
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| | - Ekawat Pasomsub
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
| | - Deanpen Japrung
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| |
Collapse
|
12
|
Pothipor C, Aroonyadet N, Bamrungsap S, Jakmunee J, Ounnunkad K. A highly sensitive electrochemical microRNA-21 biosensor based on intercalating methylene blue signal amplification and a highly dispersed gold nanoparticles/graphene/polypyrrole composite. Analyst 2021; 146:2679-2688. [PMID: 33687386 DOI: 10.1039/d1an00116g] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Numerous clinical studies suggest that microRNAs (miRNAs) are indicative biomolecules for the early diagnosis of cancer. This work aims to develop a cost-effective and label-free electrochemical biosensor to detect miRNA-21, a biomarker of breast cancer. An electrochemical sensor is fabricated using a nanocomposite, consisting of graphene (GP), polypyrrole (PPY) and gold nanoparticles (AuNPs), modified onto a screen-printed carbon electrode (SPCE) to improve electron transfer properties and increase the degree of methylene blue (MB) intercalation for signal amplification. The GP/PPY-modified electrode offers good electrochemical reactivity and high dispersibility of AuNPs, resulting in excellent sensor performance. Peak current of the MB redox process, which is proportional to miRNA-21 concentration on the electrode surface, is monitored by differential pulse voltammetry (DPV). Under optimal conditions, this sensor is operated by monitoring the MB signal response due to the amount of hybridization products between miRNA-21 target molecules and DNA-21 probes immobilized on the electrode. The proposed biosensor reveals a linear range from 1.0 fM to 1.0 nM with a low detection limit of 0.020 fM. In addition, the miRNA-21 biosensor provides good selectivity, high stability, and satisfactory reproducibility, which shows promising potential in clinical research and diagnostic applications.
Collapse
Affiliation(s)
- Chammari Pothipor
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. and The Graduate School, Chiang Mai University, Chiang Mai, 50200, Thailand and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Noppadol Aroonyadet
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Jaroon Jakmunee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Kontad Ounnunkad
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai, 50200, Thailand and Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand
| |
Collapse
|
13
|
Wiriyachaiporn N, Sirikaew S, Bamrungsap S, Limcharoen T, Polkankosit P, Roeksrungruang P, Ponlamuangdee K. A simple fluorescence-based lateral flow test platform for rapid influenza B virus screening. Anal Methods 2021; 13:1687-1694. [PMID: 33861235 DOI: 10.1039/d0ay01988g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A simple fluorescence-based lateral flow test platform for rapid influenza B virus screening as a model target molecule was successfully developed. In this work, Cy5-loaded silica nanoparticles were directly conjugated to monoclonal antibodies, specific to the influenza B nucleoprotein, via a direct physisorption method and used as detector probes. Using this approach, the signal response to the detection was further determined using a fluorescent signal intensity measurement method via a portable reader, in combination with fluorescence imaging analysis. The degree to which the fluorescence signal response is detected is proportional to the amount of the target virus protein present in the system, reflected by the accumulation of the formed particle-antibody conjugates within the test system. Under optimized conditions, the system is capable of detecting the influenza B virus protein at a level of 0.55 μg per test within 30 min, using small sample volumes as low as 100 μL (R2 = 0.9544). In addition to its simplicity, further application of the system in detecting the influenza B virus protein was demonstrated using the viral transport media as specimen matrices. It was also shown that the system can perform the detection without cross-reactivity to other closely related respiratory viruses.
Collapse
Affiliation(s)
- Natpapas Wiriyachaiporn
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
| | | | | | | | | | | | | |
Collapse
|
14
|
Sansanaphongpricha K, Sonthithai P, Kaewkong P, Thavornyutikarn B, Bamrungsap S, Kosorn W, Thinbanmai T, Saengkrit N. Hyaluronic acid-coated gold nanorods enhancing BMP-2 peptide delivery for chondrogenesis. Nanotechnology 2020; 31:435101. [PMID: 32647102 DOI: 10.1088/1361-6528/aba46d] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Bone morphogenic protein-2 (BMP-2) knuckle epitope peptide has been recently discovered and known to activate chondrogenesis. However, the applications of this soluble peptide remain very limited due to rapid diffusion resulting in poor cellular uptake into target cells. We herein designed nanoparticles made from hyaluronic acid functionalized gold nanorods (GNRs) to conjugate with thiolated BMP-2 knuckle epitope peptide via a two-step reaction. Hyaluronic acid was modified to have thiol functional groups to replace the cetyl trimethylammonium bromide ligands on the surface of GNRs. The thiolated peptides were subsequently reacted with hyaluronic acid on the surface on GNRs via a maleimide-hydrazide crosslinker. The conjugation was confirmed by the change of surface charge of GNRs and the plasmon shift. A colorimetric peptide assay suggested more than 69% of the thiolated peptides were conjugated with the hyaluronic acid coated gold nanorods. Moreover, in vitro cell viability showed that BMP-2 conjugated hyaluronic acid functionalized gold nanorods (B2HGR) were cytocompatible and did not cause cytotoxicity to fibroblast cells. The B2HGRs also significantly promote cellular uptake of the BMP-2 peptides in both human mesenchymal stem cells and porcine chondrocytes due to multivalent ligand binding to the BMP receptors on the cell surface resulting in receptor-mediated endocytosis. The enhanced cellular uptake was clearly observed under a confocal microscope resulting in the significant activation of type II collagen gene expression and glucosaminoglycan secretion in those cells. Furthermore, our delivery system is a proof-of-concept of using scaffolds in combination with nanodelivery platform to enhance cartilaginous repair. The peptide loading capacity and the release is not limited by the scaffolds. Therefore, our delivery platform has potential applications for cartilage regeneration in a preclinical and clinical setting in the future.
Collapse
Affiliation(s)
- Kanokwan Sansanaphongpricha
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
| | | | | | | | | | | | | | | |
Collapse
|
15
|
Ponlamuangdee K, Hornyak GL, Bora T, Bamrungsap S. Graphene oxide/gold nanorod plasmonic paper – a simple and cost-effective SERS substrate for anticancer drug analysis. NEW J CHEM 2020. [DOI: 10.1039/d0nj02448a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A simple and cost-effective plasmonic paper as a SERS substrate based on a combination of graphene oxide (GO) and gold nanorods (AuNRs).
Collapse
Affiliation(s)
- Kanyawan Ponlamuangdee
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathum Thani
- Thailand
- Center of Excellence in Nanotechnology
| | - Gabor L. Hornyak
- Center of Excellence in Nanotechnology
- Department of Industrial Systems Engineering
- School of Engineering and Technology
- Asian Institute of Technology (AIT)
- Pathum Thani 12120
| | - Tanujjal Bora
- Center of Excellence in Nanotechnology
- Department of Industrial Systems Engineering
- School of Engineering and Technology
- Asian Institute of Technology (AIT)
- Pathum Thani 12120
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathum Thani
- Thailand
| |
Collapse
|
16
|
Wiriyachaiporn N, Srisurat P, Cherngsuwanwong J, Sangsing N, Chonirat J, Attavitaya S, Bamrungsap S. A colorimetric sensor for protamine detection based on the self-assembly of gold nanorods on graphene oxide. NEW J CHEM 2019. [DOI: 10.1039/c9nj00552h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here, we report a simple colorimetric detection method for the determination of protamine based on the self-assembly of gold nanorods (AuNRs) on graphene oxide (GO).
Collapse
Affiliation(s)
- Natpapas Wiriyachaiporn
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Thailand
| | | | | | - Natcha Sangsing
- Faculty of Pharmacy
- Srinakharinwirot University
- Bangkok
- Thailand
| | | | | | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Thailand
| |
Collapse
|
17
|
Karn-orachai K, Sakamoto K, Laocharoensuk R, Bamrungsap S, Dharakul T, Miki K. SERS-based immunoassay on 2D-arrays of Au@Ag core–shell nanoparticles: influence of the sizes of the SERS probe and sandwich immunocomplex on the sensitivity. RSC Adv 2017. [DOI: 10.1039/c7ra00154a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The sensitivity of immunoassay performed on SERS-active substrates can be improved by optimizing the size of SERS probes and also by decreasing the size of sandwich immunocomplex.
Collapse
Affiliation(s)
- Kullavadee Karn-orachai
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
- Faculty of Pure and Applied Sciences
- University of Tsukuba
| | - Kenji Sakamoto
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Rawiwan Laocharoensuk
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| | - Tararaj Dharakul
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
- Department of Immunology
| | - Kazushi Miki
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
- Faculty of Pure and Applied Sciences
- University of Tsukuba
| |
Collapse
|
18
|
Maneeprakorn W, Bamrungsap S, Apiwat C, Wiriyachaiporn N. Surface-enhanced Raman scattering based lateral flow immunochromatographic assay for sensitive influenza detection. RSC Adv 2016. [DOI: 10.1039/c6ra24418a] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A novel sensitive SERS-lateral flow immunochromatographic integration system using Raman active molecule-coated gold nanostar as reporters for influenza virus detection is reported. Qualitative and quantitative SERS signal detection can be achieved.
Collapse
Affiliation(s)
- W. Maneeprakorn
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| | - S. Bamrungsap
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| | - C. Apiwat
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| | - N. Wiriyachaiporn
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| |
Collapse
|
19
|
Karn-orachai K, Sakamoto K, Laocharoensuk R, Bamrungsap S, Songsivilai S, Dharakul T, Miki K. Extrinsic surface-enhanced Raman scattering detection of influenza A virus enhanced by two-dimensional gold@silver core–shell nanoparticle arrays. RSC Adv 2016. [DOI: 10.1039/c6ra17143e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A surface enhanced Raman scattering (SERS) based biosensor using a direct immunoassay platform was demonstrated for influenza A detection. The sensitivity was improved ~4 times by using a well-tuned Au@Ag 2D array instead of a flat Au film.
Collapse
Affiliation(s)
- Kullavadee Karn-orachai
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
- Faculty of Pure and Applied Sciences
- University of Tsukuba
| | - Kenji Sakamoto
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Rawiwan Laocharoensuk
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| | - Sirirurg Songsivilai
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
| | - Tararaj Dharakul
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Pathumthani 12120
- Thailand
- Department of Immunology
| | - Kazushi Miki
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
- Faculty of Pure and Applied Sciences
- University of Tsukuba
| |
Collapse
|
20
|
Bamrungsap S, Treetong A, Apiwat C, Wuttikhun T, Dharakul T. SERS-fluorescence dual mode nanotags for cervical cancer detection using aptamers conjugated to gold-silver nanorods. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1639-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
21
|
Bamrungsap S, Zhao Z, Chen T, Wang L, Li C, Fu T, Tan W. Nanotechnology in therapeutics: a focus on nanoparticles as a drug delivery system. Nanomedicine (Lond) 2013; 7:1253-71. [PMID: 22931450 DOI: 10.2217/nnm.12.87] [Citation(s) in RCA: 306] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Continuing improvement in the pharmacological and therapeutic properties of drugs is driving the revolution in novel drug delivery systems. In fact, a wide spectrum of therapeutic nanocarriers has been extensively investigated to address this emerging need. Accordingly, this article will review recent developments in the use of nanoparticles as drug delivery systems to treat a wide variety of diseases. Finally, we will introduce challenges and future nanotechnology strategies to overcome limitations in this field.
Collapse
Affiliation(s)
- Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), Thailand Science Park, Pathumthani 12120, Thailand
| | | | | | | | | | | | | |
Collapse
|
22
|
Bamrungsap S, Chen T, Shukoor MI, Chen Z, Sefah K, Chen Y, Tan W. Pattern recognition of cancer cells using aptamer-conjugated magnetic nanoparticles. ACS Nano 2012; 6:3974-81. [PMID: 22424140 PMCID: PMC3387532 DOI: 10.1021/nn3002328] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Biocompatible magnetic nanosensors based on reversible self-assembly of dispersed magnetic nanoparticles into stable nanoassemblies have been used as effective magnetic relaxation switches (MRSw) for the detection of molecular interactions. We report, for the first time, the design of MRSw based on aptamer-conjugated magnetic nanoparticles (ACMNPs). The ACMNPs capitalize on the ability of aptamers to specifically bind target cancer cells, as well as the large surface area of MNPs to accommodate multiple aptamer binding events. The ACMNPs can detect as few as 10 cancer cells in 250 μL of sample. The ACMNPs' specificity and sensitivity are also demonstrated by detection in cell mixtures and complex biological media, including fetal bovine serum, human plasma, and whole blood. Furthermore, by using an array of ACMNPs, various cell types can be differentiated through pattern recognition, thus creating a cellular molecular profile that will allow clinicians to accurately identify cancer cells at the molecular and single-cell level.
Collapse
Affiliation(s)
- Suwussa Bamrungsap
- Center for Research at Bio/nano interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, United States
| | - Tao Chen
- Center for Research at Bio/nano interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, United States
| | - Mohammed Ibrahim Shukoor
- Center for Research at Bio/nano interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, United States
| | - Zhuo Chen
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Biology and College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Kwame Sefah
- Center for Research at Bio/nano interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, United States
| | - Yan Chen
- Center for Research at Bio/nano interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, United States
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Biology and College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Weihong Tan
- Center for Research at Bio/nano interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, United States
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Biology and College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
- Fax: +1 352 846 2410
| |
Collapse
|
23
|
Chen T, Shukoor MI, Wang R, Zhao Z, Yuan Q, Bamrungsap S, Xiong X, Tan W. Smart multifunctional nanostructure for targeted cancer chemotherapy and magnetic resonance imaging. ACS Nano 2011; 5:7866-73. [PMID: 21888350 PMCID: PMC3229931 DOI: 10.1021/nn202073m] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Targeted chemotherapy and magnetic resonance imaging of cancer cells in vitro has been achieved using a smart multifunctional nanostructure (SMN) constructed from a porous hollow magnetite nanoparticle (PHMNP), a heterobifunctional PEG ligand, and an aptamer. The PHMNPs were prepared through a three-step reaction and loaded with the anticancer drug doxorubicin while being functionalized with PEG ligands. Targeting aptamers were then introduced by reaction with the PEG ligands. The pores of the PHMNPs are stable at physiological pH, but they are subject to acid etching. Specific binding and uptake of the SMN to the target cancer cells induced by aptamers was observed. In addition, multiple aptamers on the surface of one single SMN led to enhanced binding and uptake to target cancer cells due to the multivalent effect. Upon reaching the lysosomes of target cancer cells through receptor-mediated endocytosis, the relatively low lysosomal pH level resulted in corrosion of the PHMNP pores, facilitating the release of doxorubicin to kill the target cancer cells. In addition, the potential of using SMN for magnetic resonance imaging was also investigated.
Collapse
|
24
|
Bamrungsap S, Shukoor MI, Chen T, Sefah K, Tan W. Detection of lysozyme magnetic relaxation switches based on aptamer-functionalized superparamagnetic nanoparticles. Anal Chem 2011; 83:7795-9. [PMID: 21888415 PMCID: PMC3229930 DOI: 10.1021/ac201442a] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Magnetic relaxation switch (MRSw) detection is based on aggregate formation or dissociation when magnetic nanoparticles (MNPs) bind to target molecules. In the aggregated state, the dephasing rate of nearby proton spins is higher than in the dispersed state, resulting in a decrease in the spin-spin relaxation time, T(2). In this work, an MRSw-based nanosensor for lysozyme (Lys) protein detection was achieved using iron oxide nanoparticles conjugated with either Lys aptamer or linker DNA, which can hybridize with the extended part of the aptamer to form clusters. Upon the addition of Lys, the aptamers bind with their targets, leading to disassembly of clusters and an increase in T(2). A detection limit in the nanomolar range was achieved for Lys detection in both buffer and human serum. The determination of Lys level in different types of cancer cell lysates was also performed to demonstrate detection in real clinical samples.
Collapse
Affiliation(s)
- Suwussa Bamrungsap
- Center for Research at the Bio/nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, University of Florida, Gainesville, FL 32611-7200, 352-846-2410 (phone and fax)
| | - Mohammed Ibrahim Shukoor
- Center for Research at the Bio/nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, University of Florida, Gainesville, FL 32611-7200, 352-846-2410 (phone and fax)
| | - Tao Chen
- Center for Research at the Bio/nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, University of Florida, Gainesville, FL 32611-7200, 352-846-2410 (phone and fax)
| | - Kwame Sefah
- Center for Research at the Bio/nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, University of Florida, Gainesville, FL 32611-7200, 352-846-2410 (phone and fax)
| | - Weihong Tan
- Center for Research at the Bio/nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, University of Florida, Gainesville, FL 32611-7200, 352-846-2410 (phone and fax)
| |
Collapse
|
25
|
Bamrungsap S, Phillips JA, Xiong X, Kim Y, Wang H, Liu H, Hebard A, Tan W. Magnetically driven single DNA nanomotor. Small 2011; 7:601-605. [PMID: 21370463 DOI: 10.1002/smll.201001559] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Suwussa Bamrungsap
- Center for Research at the Bio/nano Interface, Department of Chemistry, Shands Cancer Center, University of Florida, Gainesville, FL 32611-7200, USA
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Abstract
Aptamer-conjugated nanoparticles (ACNPs) have been used for a variety of applications, particularly dual nanoparticles for magnetic extraction and fluorescent labeling. In this type of assay, silica-coated magnetic and fluorophore-doped silica nanoparticles are conjugated to highly selective aptamers to detect and extract targeted cells in a variety of matrixes. However, considerable improvements are required in order to increase the selectivity and sensitivity of this two-particle assay to be useful in a clinical setting. To accomplish this, several parameters were investigated, including nanoparticle size, conjugation chemistry, use of multiple aptamer sequences on the nanoparticles, and use of multiple nanoparticles with different aptamer sequences. After identifying the best-performing elements, the improvements made to this assay's conditional parameters were combined to illustrate the overall enhanced sensitivity and selectivity of the two-particle assay using an innovative multiple aptamer approach, signifying a critical feature in the advancement of this technique.
Collapse
Affiliation(s)
- Colin D Medley
- Center for Research at the Bio/Nano Interface, Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA
| | | | | | | |
Collapse
|
27
|
Huang J, Zhu Z, Bamrungsap S, Zhu G, You M, He X, Wang K, Tan W. Competition-mediated pyrene-switching aptasensor: probing lysozyme in human serum with a monomer-excimer fluorescence switch. Anal Chem 2010; 82:10158-63. [PMID: 21080638 DOI: 10.1021/ac102277p] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Lysozyme (Lys) plays crucial roles in the innate immune system, and the detection of Lys in urine and serum has considerable clinical importance. Traditionally, the presence of Lys has been detected by immunoassays; however, these assays are limited by the availability of commercial antibodies and tedious protein modification and prior sample purification. To address these limitations, we report here the design, synthesis, and application of a competition-mediated pyrene-switching aptasensor for selective detection of Lys in buffer and human serum. The detection strategy is based on the attachment of pyrene molecules to both ends of a hairpin DNA strand, which becomes the partially complementary competitor to an anti-Lys aptamer. In the presence of target Lys, the aptamer hybridizes with part of the competitor, which opens the hairpin such that both pyrene molecules are spatially separated. In the presence of target Lys, however, the competitor is displaced from the aptamer by the target, subsequently forming an initial hairpin structure. This brings the two pyrene moieties into close proximity to generate an excimer, which, in turn, results in a shift of fluorescence emission from ca. 400 nm (pyrene monomer) to 495 nm (pyrene excimer). The proposed method for Lys detection showed sensitivity as low as 200 pM and high selectivity in buffer. When measured by a steady-state fluorescence spectrum, the detection of Lys in human serum showed a strong fluorescent background, which obscured detection of the excimer signal. However, time-resolved emission measurement (TREM) supported the potential of the method in complex environments with background fluorescence by demonstrating the temporal separation of probe fluorescence emission decay from the intense background signal. We have also demonstrated that the same strategy can be applied to the detection of small biomolecules such as adenosine triphosphate (ATP), showing the generality of our approach. Therefore, the competition-mediated pyrene-switching aptasensor is promising to have potential for clinical and forensic applications.
Collapse
Affiliation(s)
- Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Wang H, Kim Y, Liu H, Zhu Z, Bamrungsap S, Tan W. Engineering a Unimolecular DNA-Catalytic Probe for Single Lead Ion Monitoring. J Am Chem Soc 2009; 131:8221-6. [DOI: 10.1021/ja901132y] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui Wang
- Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center and Center for Research at the Bio/nano Interface, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200
| | - Youngmi Kim
- Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center and Center for Research at the Bio/nano Interface, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200
| | - Haipeng Liu
- Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center and Center for Research at the Bio/nano Interface, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200
| | - Zhi Zhu
- Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center and Center for Research at the Bio/nano Interface, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200
| | - Suwussa Bamrungsap
- Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center and Center for Research at the Bio/nano Interface, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200
| | - Weihong Tan
- Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center and Center for Research at the Bio/nano Interface, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200
| |
Collapse
|
29
|
Tallury P, Kar S, Bamrungsap S, Huang YF, Tan W, Santra S. Ultra-small water-dispersible fluorescent chitosan nanoparticles: synthesis, characterization and specific targeting. Chem Commun (Camb) 2009:2347-9. [PMID: 19377681 DOI: 10.1039/b901729a] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A robust water-in-oil microemulsion method of making water-dispersible ultra-small (<30 nm) size fluorescent chitosan nanoparticles is reported for the first time and specific targeting of these FCNPs to human leukemia cells via aptamer recognition is demonstrated.
Collapse
Affiliation(s)
- Padmavathy Tallury
- NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USA
| | | | | | | | | | | |
Collapse
|
30
|
Huang YF, Sefah K, Bamrungsap S, Chang HT, Tan W. Selective photothermal therapy for mixed cancer cells using aptamer-conjugated nanorods. Langmuir 2008; 24:11860-5. [PMID: 18817428 DOI: 10.1021/la801969c] [Citation(s) in RCA: 137] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Safe and effective photothermal therapy depends on efficient delivery of heat for killing cells and molecular specificity for targeting cells. To address these requirements, we have designed an aptamer-based nanostructure which combines the high absorption efficiency of Au-Ag nanorods with the target specificity of molecular aptamers, a combination resulting in the development of an efficient and selective therapeutic agent for targeted cancer cell photothermal destruction. Most nanomaterials, such as gold nanoshells or nanorods (NRs), require a relatively high power of laser irradiation (1 x 10 (5)-1 x 10 (10) W/m (2)). In contrast, the high absorption characteristic of our Au-Ag NRs requires only 8.5 x 10 (4) W/m (2) laser exposure to induce 93 (+/-11)% cell death of NR-aptamer-labeled cells. Aptamers, the second component of the nanostructure, are generated from a cell-SELEX (systematic evolution of ligands by exponential enrichment) process and can be easily selected for specific recognition of individual tumor cell types without prior knowledge of the biomarkers for the cell. When tested with both cell suspensions and artificial solid tumor samples, these aptamer conjugates were shown to have excellent hyperthermia efficiency and selectivity. Under a specific laser intensity and duration of laser exposure, about 50 (+/-1)% of target (CEM) cells were severely damaged, while more than 87 (+/-1)% of control (NB-4) cells remained intact in a suspension cell mixture. These results indicate that the Au-Ag nanorod combination offers selective and efficient photothermal killing of targeted tumor cells, thus satisfying the two key challenges noted above. Consequently, for future in vivo application, it is fully anticipated that the tumor tissue will be selectively destroyed at laser energies which will not harm the surrounding normal tissue.
Collapse
Affiliation(s)
- Yu-Fen Huang
- Center for Research at the Bio/Nano Interface, Department of Chemistry, Shands Cancer Center, Genetics Institute, and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200, USA
| | | | | | | | | |
Collapse
|
31
|
Medley CD, Smith JE, Tang Z, Wu Y, Bamrungsap S, Tan W. Gold nanoparticle-based colorimetric assay for the direct detection of cancerous cells. Anal Chem 2008; 80:1067-72. [PMID: 18198894 DOI: 10.1021/ac702037y] [Citation(s) in RCA: 521] [Impact Index Per Article: 32.6] [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
Early and accurate detection of cancer often requires time-consuming techniques and expensive instrumentation. To address these limitations, we developed a colorimetric assay for the direct detection of diseased cells. The assay uses aptamer-conjugated gold nanoparticles to combine the selectivity and affinity of aptamers and the spectroscopic advantages of gold nanoparticles to allow for the sensitive detection of cancer cells. Samples with the target cells present exhibited a distinct color change while nontarget samples did not elicit any change in color. The assay also showed excellent sensitivity with both the naked eye and based on absorbance measurements. In addition, the assay was able to differentiate between different types of target and control cells based on the aptamer used in the assay indicating the wide applicability of the assay for diseased cell detection. On the basis of these qualities, aptamer-conjugated gold nanoparticles could become a powerful tool for point of care diagnostics.
Collapse
Affiliation(s)
- Colin D Medley
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA
| | | | | | | | | | | |
Collapse
|