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Rakshit S, Moulik SP, Bhattacharya SC. Deciphering the Role of the Length of the Corona in Controlled NSET within Triblock Copolymers. J Phys Chem B 2015; 119:8457-67. [DOI: 10.1021/acs.jpcb.5b04001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Soumyadipta Rakshit
- Department
of Chemistry, Jadavpur University, Kolkata 700 032, India
- Centre
for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Satya Priya Moulik
- Department
of Chemistry, Jadavpur University, Kolkata 700 032, India
- Centre
for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Subhash Chandra Bhattacharya
- Department
of Chemistry, Jadavpur University, Kolkata 700 032, India
- Centre
for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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52
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Wang Q, Zhou C, Yang X, Liu L, Wang K. Probing interactions between human lung adenocarcinoma A549 cell and its aptamers at single-molecule resolution. J Mol Recognit 2015; 27:676-82. [PMID: 25277092 DOI: 10.1002/jmr.2391] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 04/23/2014] [Accepted: 05/08/2014] [Indexed: 11/09/2022]
Abstract
Because cell-specific aptamers have high potential for biomedical applications, investigation of the interaction between cell and its aptamers may be of key importance for an improved understanding of biochemical processes. Herein, the interaction between human lung adenocarcinoma A549 cell and its four aptamers was explored using single-molecule force spectroscopy (SMFS). The values of the unbinding force varied from 117.1 to 171.0 pN at the loading rate of 1.8 × 10(5) pN/s. Based on the dependence of singe molecule force on the atomic force microscopy loading rate, the corresponding kinetic parameters were obtained. The results revealed two activation barriers and two transient states in the unbinding process of aptamer/cell interaction. More importantly, the binding sites on A549 cells with its four aptamers were defined to be different using SMFS and flow cytometry. This work demonstrated that SMFS can be used as a powerful tool for exploring the aptamer/cell binding behavior at the single-molecule level, and may provide valuable information for the design and application of aptamer probes.
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Affiliation(s)
- Qing Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, College of Biology, Hunan University, Changsha, 410082, China
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53
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Jiang L, Yang Y, Tu Y. A new strategy to develop the disposable label-free immunosensor with electrochemiluminescent probing. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.04.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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54
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Wu Z, Liu GQ, Yang XL, Jiang JH. Electrostatic nucleic acid nanoassembly enables hybridization chain reaction in living cells for ultrasensitive mRNA imaging. J Am Chem Soc 2015; 137:6829-36. [PMID: 25969953 DOI: 10.1021/jacs.5b01778] [Citation(s) in RCA: 255] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Efficient approaches for intracellular delivery of nucleic acid reagents to achieve sensitive detection and regulation of gene and protein expressions are essential for chemistry and biology. We develop a novel electrostatic DNA nanoassembly that, for the first time, realizes hybridization chain reaction (HCR), a target-initiated alternating hybridization reaction between two hairpin probes, for signal amplification in living cells. The DNA nanoassembly has a designed structure with a core gold nanoparticle, a cationic peptide interlayer, and an electrostatically assembled outer layer of fluorophore-labeled hairpin DNA probes. It is shown to have high efficiency for cellular delivery of DNA probes via a unique endocytosis-independent mechanism that confers a significant advantage of overcoming endosomal entrapment. Moreover, electrostatic assembly of DNA probes enables target-initialized release of the probes from the nanoassembly via HCR. This intracellular HCR offers efficient signal amplification and enables ultrasensitive fluorescence activation imaging of mRNA expression with a picomolar detection limit. The results imply that the developed nanoassembly may provide an invaluable platform in low-abundance biomarker discovery and regulation for cell biology and theranostics.
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Affiliation(s)
- Zhan Wu
- State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Gao-Qin Liu
- State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Xiao-Li Yang
- State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Jian-Hui Jiang
- State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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55
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Sinha SS, Paul DK, Kanchanapally R, Pramanik A, Chavva SR, Viraka Nellore BP, Jones SJ, Ray PC. Long-range two-photon scattering spectroscopy ruler for screening prostate cancer cells. Chem Sci 2015; 6:2411-2418. [PMID: 29308154 PMCID: PMC5646206 DOI: 10.1039/c4sc03843f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 02/02/2015] [Indexed: 12/14/2022] Open
Abstract
Optical rulers have served as a key tool for scientists from different disciplines to address a wide range of biological activity. Since the optical window of state of the art FRET rulers is limited to a 10 nm distance, developing long range optical rulers is very important to monitor real life biological processes. Driven by this need, the current manuscript reports for the first time the design of long-range two-photon scattering (TPS) spectroscopy rulers using gold nano-antenna separated by a bifunctional rigid double strand DNA molecule, which controls the spectroscopy ruler length. Reported data demonstrate that the TPS spectroscopy ruler's working window is a within a 25 nm distance, which is more than twice that of well recognized FRET optical ruler. A possible mechanism for the two-photon spectroscopy ruler's long range capability have been discussed using angle-resolved TPS measurement and FDTD simulations. Solution-phase experimental data demonstrated that a long-range TPS ruler using A9 aptamer can be used for the screening of prostate-specific membrane antigen (PSMA) (+) prostate cancer cells even at 5 cells per mL level. Reported result with PSMA (-) normal skin HaCaT cells indicate that TPS ruler based assay has the capability to enable distinction from non-targeted cell lines. Ultimately, the long range TPS ruler can be used towards better understanding of chemical and biological processes.
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Affiliation(s)
- Sudarson Sekhar Sinha
- Department of Chemistry and Biochemistry , Jackson State University , Jackson , MS , USA .
| | - Dilip K Paul
- Department of Chemistry and Biochemistry , Jackson State University , Jackson , MS , USA .
| | | | - Avijit Pramanik
- Department of Chemistry and Biochemistry , Jackson State University , Jackson , MS , USA .
| | - Suhash Reddy Chavva
- Department of Chemistry and Biochemistry , Jackson State University , Jackson , MS , USA .
| | | | - Stacy J Jones
- Department of Chemistry and Biochemistry , Jackson State University , Jackson , MS , USA .
| | - Paresh Chandra Ray
- Department of Chemistry and Biochemistry , Jackson State University , Jackson , MS , USA .
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56
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Armstrong RE, Riskowski RA, Strouse GF. Nanometal Surface Energy Transfer Optical Ruler for Measuring a Human Telomere Structure. Photochem Photobiol 2015; 91:732-8. [DOI: 10.1111/php.12423] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 01/01/2015] [Indexed: 12/23/2022]
Affiliation(s)
- Rachel E. Armstrong
- Department of Chemistry and Biochemistry; Florida State University; Tallahassee FL
| | - Ryan A. Riskowski
- Department of Chemistry and Biochemistry; Florida State University; Tallahassee FL
| | - Geoffrey F. Strouse
- Department of Chemistry and Biochemistry; Florida State University; Tallahassee FL
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Jayalekshmi A, Sharma CP. Gold nanoparticle incorporated polymer/bioactive glass composite for controlled drug delivery application. Colloids Surf B Biointerfaces 2015; 126:280-7. [DOI: 10.1016/j.colsurfb.2014.12.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 11/01/2014] [Accepted: 12/10/2014] [Indexed: 12/14/2022]
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58
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Guo Y, Kang L, Chen S, Li X. High performance surface-enhanced Raman scattering from molecular imprinting polymer capsulated silver spheres. Phys Chem Chem Phys 2015; 17:21343-7. [DOI: 10.1039/c5cp00206k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Driven by the ultrasensitivity of the surface-enhanced Raman scattering (SERS) technique and the directive selection of molecular imprinting polymers (MIPs), core–shell silver-molecularly imprinted polymer (Ag@MIP) hybrid structure was synthesized to serve as a novel SERS platform.
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Affiliation(s)
- Yan Guo
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Leilei Kang
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Shaona Chen
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Xin Li
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
- Department of Chemistry
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59
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Maiti C, Banerjee R, Maiti S, Dhara D. pH-induced vesicle-to-micelle transition in amphiphilic diblock copolymer: investigation by energy transfer between in situ formed polymer embedded gold nanoparticles and fluorescent dye. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 31:32-41. [PMID: 25494810 DOI: 10.1021/la504165e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The ability to regulate the formation of nanostructures through self-assembly of amphiphilic block copolymers is of immense significance in the field of biology and medicine. In this work, a new block copolymer synthesized by using reversible addition-fragmentation chain transfer (RAFT) polymerization technique from poly(ethylene glycol) monomethyl ether acrylate (PEGMA) and Boc-l-tryptophan acryloyloxyethyl ester (Boc-l-trp-HEA) was found to spontaneously form pH-responsive water-soluble nanostructures after removal of the Boc group. While polymer vesicles or polymerosomes were formed at physiological pH, the micelles were formed at acidic pH (< 5.2), and this facilitated a pH-induced reversible vesicle-to-micelle transition. Formation of these nanostructures was confirmed by different characterization techniques, viz. transmission electron microscopy, dynamic light scattering, and steady-state fluorescence measurements. Further, these vesicles were successfully utilized to reduce HAuCl4 and stabilize the resulting gold nanoparticles (AuNPs). These AuNPs, confined within the hydrophobic shell of the vesicles, could participate in energy transfer process with fluorescent dye molecules encapsulated in the core of the vesicles, thus forming a nanometal surface energy transfer (NSET) pair. Subsequently, following the efficiency of energy transfer between this pair, it was possible to monitor the process of transition from vesicles to micelles. Thus, in this work, we have successfully demonstrated that NSET can be used to follow the transition between nanostructures formed by amphiphilic block copolymers.
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Affiliation(s)
- Chiranjit Maiti
- Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur, West Bengal 721302, India
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60
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Li J, Zhu B, Yao X, Zhang Y, Zhu Z, Tu S, Jia S, Liu R, Kang H, Yang CJ. Synergetic approach for simple and rapid conjugation of gold nanoparticles with oligonucleotides. ACS APPLIED MATERIALS & INTERFACES 2014; 6:16800-16807. [PMID: 25188540 DOI: 10.1021/am504139d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Attaching thiolated DNA on gold nanoparticles (AuNPs) has been extremely important in nanobiotechnology because DNA-AuNPs combine the programmability and molecular recognition properties of the biopolymers with the optical, thermal, and catalytic properties of the inorganic nanomaterials. However, current standard protocols to attach thiolated DNA on AuNPs involve time-consuming, tedious steps and do not perform well for large AuNPs, thereby greatly restricting applications of DNA-AuNPs. Here we demonstrate a rapid and facile strategy to attach thiolated DNA on AuNPs based on the excellent stabilization effect of mPEG-SH on AuNPs. AuNPs are first protected by mPEG-SH in the presence of Tween 20, which results in excellent stability of AuNPs in high ionic strength environments and extreme pHs. A high concentration of NaCl can be applied to the mixture of DNA and AuNP directly, allowing highly efficient DNA attachment to the AuNP surface by minimizing electrostatic repulsion. The entire DNA loading process can be completed in 1.5 h with only a few simple steps. DNA-loaded AuNPs are stable for more than 2 weeks at room temperature, and they can precisely hybridize with the complementary sequence, which was applied to prepare core-satellite nanostructures. Moreover, cytotoxicity assay confirmed that the DNA-AuNPs synthesized by this method exhibit lower cytotoxicity than those prepared by current standard methods. The proposed method provides a new way to stabilize AuNPs for rapid and facile loading thiolated DNA on AuNPs and will find wide applications in many areas requiring DNA-AuNPs, including diagnosis, therapy, and imaging.
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Affiliation(s)
- Jiuxing Li
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, the Key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China
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61
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Chen X, He Y, Zhang Y, Liu M, Liu Y, Li J. Ultrasensitive detection of cancer cells and glycan expression profiling based on a multivalent recognition and alkaline phosphatase-responsive electrogenerated chemiluminescence biosensor. NANOSCALE 2014; 6:11196-11203. [PMID: 25123148 DOI: 10.1039/c4nr03053b] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A multivalent recognition and alkaline phosphatase (ALP)-responsive electrogenerated chemiluminescence (ECL) biosensor for cancer cell detection and in situ evaluation of cell surface glycan expression was developed on a poly(amidoamine) (PAMAM) dendrimer-conjugated, chemically reduced graphene oxide (rGO) electrode interface. In this strategy, the multivalency and high affinity of the cell-targeted aptamers on rGO provided a highly efficient cell recognition platform on the electrode. The ALP and concanavalin A (Con A) coated gold nanoparticles (Au NPs) nanoprobes allowed the ALP enzyme-catalyzed production of phenols that inhibited the ECL reaction of Ru(bpy)3(2+) on the rGO electrode interface, affording fast and highly sensitive ECL cytosensing and cell surface glycan evaluation. Combining the multivalent aptamer interface and ALP nanoprobes, the ECL cytosensor showed a detection limit of 38 CCRF-CEM cells per mL in human serum samples, broad dynamic range and excellent selectivity. In addition, the proposed biosensor provided a valuable insight into dynamic profiling of the expression of different glycans on cell surfaces, based on the carbohydrates recognized by lectins applied to the nanoprobes. This biosensor exhibits great promise in clinical diagnosis and drug screening.
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Affiliation(s)
- Xiaojiao Chen
- Department of Chemistry, Beijing Key Laboratory for Analytical Methods and Instrumentation, Tsinghua University, Beijing 100084, China.
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62
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Liu Z, Liu B, Ding J, Liu J. Fluorescent sensors using DNA-functionalized graphene oxide. Anal Bioanal Chem 2014; 406:6885-902. [PMID: 24986027 DOI: 10.1007/s00216-014-7888-3] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/23/2014] [Accepted: 05/12/2014] [Indexed: 01/13/2023]
Abstract
In the past few years, graphene oxide (GO) has emerged as a unique platform for developing DNA-based biosensors, given the DNA adsorption and fluorescence-quenching properties of GO. Adsorbed DNA probes can be desorbed from the GO surface in the presence of target analytes, producing a fluorescence signal. In addition to this initial design, many other strategies have been reported, including the use of aptamers, molecular beacons, and DNAzymes as probes, label-free detection, utilization of the intrinsic fluorescence of GO, and the application of covalently linked DNA probes. The potential applications of DNA-functionalized GO range from environmental monitoring and cell imaging to biomedical diagnosis. In this review, we first summarize the fundamental surface interactions between DNA and GO and the related fluorescence-quenching mechanism. Following that, the various sensor design strategies are critically compared. Problems that must be overcome before this technology can reach its full potential are described, and a few future directions are also discussed.
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Affiliation(s)
- Zhenbao Liu
- School of Pharmaceutical Sciences, Central South University, Changsha, 410013, Hunan, China
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63
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Xiong X, Lv Y, Chen T, Zhang X, Wang K, Tan W. Nucleic acid aptamers for living cell analysis. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2014; 7:405-426. [PMID: 24896309 DOI: 10.1146/annurev-anchem-071213-015944] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Cells as the building blocks of life determine the basic functions and properties of a living organism. Understanding the structure and components of a cell aids in the elucidation of its biological functions. Moreover, knowledge of the similarities and differences between diseased and healthy cells is essential to understanding pathological mechanisms, identifying diagnostic markers, and designing therapeutic molecules. However, monitoring the structures and activities of a living cell remains a challenging task in bioanalytical and life science research. To meet the requirements of this task, aptamers, as "chemical antibodies," have become increasingly powerful tools for cellular analysis. This article reviews recent advances in the development of nucleic acid aptamers in the areas of cell membrane analysis, cell detection and isolation, real-time monitoring of cell secretion, and intracellular delivery and analysis with living cell models. Limitations of aptamers and possible solutions are also discussed.
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Affiliation(s)
- Xiangling Xiong
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Collaborative Innovation Center for Molecular Engineering and Theranostics, Hunan University, Changsha 410082, China
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64
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Shi M, Zhao S, Huang Y, Zhao L, Liu YM. Signal amplification in capillary electrophoresis based chemiluminescent immunoassays by using an antibody–gold nanoparticle–DNAzyme assembly. Talanta 2014; 124:14-20. [DOI: 10.1016/j.talanta.2014.02.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 02/09/2014] [Accepted: 02/15/2014] [Indexed: 10/25/2022]
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65
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Zhou Z, Xiang Y, Tong A, Lu Y. Simple and efficient method to purify DNA-protein conjugates and its sensing applications. Anal Chem 2014; 86:3869-75. [PMID: 24605905 PMCID: PMC4004194 DOI: 10.1021/ac4040554] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 03/08/2014] [Indexed: 11/28/2022]
Abstract
DNA-protein conjugates are very useful in analytical chemistry for target recognition and signal amplification. While a number of methods for conjugating DNA with proteins are known, methods for purification of DNA-protein conjugates from reaction mixture containing unreacted proteins are much less investigated. In this work, a simple and efficient approach to purify DNA-invertase conjugates from reaction mixture via a biotin displacement strategy to release desthiobiotinylated DNA-invertase conjugates from streptavidin-coated magnetic beads was developed. The conjugates purified by this approach were utilized for quantitative detection of cocaine and DNA using a personal glucose meter through structure-switching DNA aptamer sensors and competitive DNA hybridization assays, respectively. In both cases, the purified DNA-invertase conjugates showed better performance compared to the same assays using unpurified conjugates. The approach demonstrated here can be further expanded to other DNA and proteins to generate purified DNA-protein conjugates for analytical and other applications.
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Affiliation(s)
- Zhaojuan Zhou
- Department of Chemistry, Key Laboratory
of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry
of Education), Beijing Key Laboratory for Microanalytical Methods
and Instrumentation, Tsinghua University, Beijing 100084, China
- Department of Chemistry and Beckman Institute
for Advanced Science and Technology, University
of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Yu Xiang
- Department of Chemistry, Key Laboratory
of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry
of Education), Beijing Key Laboratory for Microanalytical Methods
and Instrumentation, Tsinghua University, Beijing 100084, China
- Department of Chemistry and Beckman Institute
for Advanced Science and Technology, University
of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Aijun Tong
- Department of Chemistry, Key Laboratory
of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry
of Education), Beijing Key Laboratory for Microanalytical Methods
and Instrumentation, Tsinghua University, Beijing 100084, China
| | - Yi Lu
- Department of Chemistry and Beckman Institute
for Advanced Science and Technology, University
of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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68
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Zhang J, Liu B, Liu H, Zhang X, Tan W. Aptamer-conjugated gold nanoparticles for bioanalysis. Nanomedicine (Lond) 2013; 8:983-93. [DOI: 10.2217/nnm.13.80] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Aptamers are single-stranded oligonucleotides synthesized through an in vitro selection and amplification process that involves systematic evolution of ligands by exponential enrichment. Based on their high binding affinity and specificity towards other molecules, aptamers generated during the final rounds of selection can be utilized in applications ranging from biosensing to diagnostics and therapeutics. Meanwhile, advances in nanotechnology have led to new and improved materials for biomedical applications. Specifically, nanoparticles can readily interact with both intra- and extra-cellular biomolecules to yield improved signal amplification and target recognition. By combining both technologies, aptamer-conjugated nanoparticles, especially gold nanoparticles (Apt–AuNPs), offer great promise for applications in bioanalysis and biomedicine, including early diagnosis and drug delivery. This review summarizes recent methodologies that have increased the application of Apt–AuNPs in biomedicine, and discusses the potential of Apt–AuNPs in bioanalysis.
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Affiliation(s)
- Jiani Zhang
- Xiangya Hospital, Central South University, PO Box 190, Changsha, Hunan 410008, China
| | - Bo Liu
- Xiangya Hospital, Central South University, PO Box 190, Changsha, Hunan 410008, China
| | - Huixia Liu
- Xiangya Hospital, Central South University, PO Box 190, Changsha, Hunan 410008, China.
| | - Xiaobing Zhang
- Molecular Science & Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing & Chemometrics, College of Biology & College of Chemistry & Chemical Engineering, Collaborative Innovation Center for Chemistry & Molecular Medicine, Hunan University, Changsha 410082, China
| | - Weihong Tan
- Molecular Science & Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing & Chemometrics, College of Biology & College of Chemistry & Chemical Engineering, Collaborative Innovation Center for Chemistry & Molecular Medicine, Hunan University, Changsha 410082, China
- Center for Research at Bio/Nano Interface, Department of Physiology & Functional Genomics, Shands Cancer Center, UF Genetics Institute & McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, USA
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69
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Zhu G, Zhang S, Song E, Zheng J, Hu R, Tan W. Building fluorescent DNA nanodevices on target living cell surfaces. Angew Chem Int Ed Engl 2013; 52:5490-6. [PMID: 23606645 PMCID: PMC3755728 DOI: 10.1002/anie.201301439] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Indexed: 12/31/2022]
Abstract
We report 1) the anchoring of preformed fluorescent DNA nanodevices (NDs) and 2) the in situ self-assembly of fluorescent DNA NDs on target living cell surfaces. Three types of aptamer-tethered DNA NDs were built and anchored on target cell surfaces by specific target-aptamer association. The in situ nanodevice self-assembly was further demonstrated on the surfaces of target living cells in cell mixtures. These DNA NDs exhibited fluorescence emission and underwent fluorescence energy transfer on living cell surfaces.
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Affiliation(s)
- Guizhi Zhu
- 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 (USA)
| | - Shengfeng Zhang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Biology and College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha, 410082, China
| | - Erqun Song
- 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 (USA). Key Laboratory of Luminescence and Real-Time Analysis of the Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Jing Zheng
- 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 (USA)
| | - Rong Hu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Biology and College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha, 410082, 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 (USA). Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Biology and College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha, 410082, China
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70
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Zhu G, Zhang S, Song E, Zheng J, Hu R, Fang X, Tan W. Building Fluorescent DNA Nanodevices on Target Living Cell Surfaces. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301439] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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71
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Stender AS, Marchuk K, Liu C, Sander S, Meyer MW, Smith EA, Neupane B, Wang G, Li J, Cheng JX, Huang B, Fang N. Single cell optical imaging and spectroscopy. Chem Rev 2013; 113:2469-527. [PMID: 23410134 PMCID: PMC3624028 DOI: 10.1021/cr300336e] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Anthony S. Stender
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Kyle Marchuk
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Chang Liu
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Suzanne Sander
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Matthew W. Meyer
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Emily A. Smith
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Bhanu Neupane
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA
| | - Gufeng Wang
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA
| | - Junjie Li
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907
| | - Ji-Xin Cheng
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907
| | - Bo Huang
- Department of Pharmaceutical Chemistry and Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94158
| | - Ning Fang
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
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72
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Li H, Wang M, Wang C, Li W, Qiang W, Xu D. Silver nanoparticle-enhanced fluorescence resonance energy transfer sensor for human platelet-derived growth factor-BB detection. Anal Chem 2013; 85:4492-9. [PMID: 23531211 DOI: 10.1021/ac400047d] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A silver nanoparticle (AgNP)-enhanced fluorescence resonance energy transfer (FRET) sensing system is designed for the sensitive detection of human platelet-derived growth factor-BB (PDGF-BB). Fluorophore-functionalized aptamers and quencher-carrying strands hybridized in duplex are coupled with streptavidin (SA)-functionalized nanoparticles to form a AgNP-enhanced FRET sensor. The resulting sensor shows lower background fluorescence intensity in the duplex state due to the FRET effect between fluorophores and quenchers. Upon the addition of PDGF-BB, the quencher-carrying strands (BHQ-2) of the duplex are displaced leading to the disruption of the FRET effect. As a result, the fluorescent intensity of the fluorophore-aptamer within the proximity of the AgNP is increased. When compared to the gold nanoparticle (AuNP)-based FRET and bare FRET sensors, the AgNP-based FRET sensor showed remarkable increase in fluorescence intensity, target specificity, and sensitivity. Results also show versatility of the AgNP in the enhancement of sensitivity and selectivity of the FRET sensor. In addition, a good linear response was obtained when the PDGF-BB concentrations are in the ranges of 100-500 and 6.2-50 ng/mL with the detection limit of 0.8 ng/mL.
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Affiliation(s)
- Hui Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, China
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73
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Liu Y, Yehl K, Narui Y, Salaita K. Tension sensing nanoparticles for mechano-imaging at the living/nonliving interface. J Am Chem Soc 2013; 135:5320-3. [PMID: 23495954 DOI: 10.1021/ja401494e] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Studying chemomechanical coupling at interfaces is important for fields ranging from lubrication and tribology to microfluidics and cell biology. Several polymeric macro- and microscopic systems and cantilevers have been developed to image forces at interfaces, but few materials are amenable for molecular tension sensing. To address this issue, we have developed a gold nanoparticle sensor for molecular tension-based fluorescence microscopy. As a proof of concept, we imaged the tension exerted by integrin receptors at the interface between living cells and a substrate with high spatial (<1 μm) resolution, at 100 ms acquisition times and with molecular specificity. We report integrin tension values ranging from 1 to 15 pN and a mean of ~1 pN within focal adhesions. Through the use of a conventional fluorescence microscope, this method demonstrates a force sensitivity that is 3 orders of magnitude greater than is achievable by traction force microscopy or polydimethylsiloxane micropost arrays, which are the standard in cellular biomechanics.
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Affiliation(s)
- Yang Liu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, USA
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74
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Liu JM, Chen JT, Yan XP. Near infrared fluorescent trypsin stabilized gold nanoclusters as surface plasmon enhanced energy transfer biosensor and in vivo cancer imaging bioprobe. Anal Chem 2013; 85:3238-45. [PMID: 23413985 DOI: 10.1021/ac303603f] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The simplicity of the green-synthesized routine and the availability of surface modification of diverse bioactive molecules make noble metal nanostructures highly suitable as multifunctional biomaterials for biological and biomedical application. Here, we report the preparation of trypsin stabilized gold nanoclusters (try-AuNCs) with near-infrared fluorescence for biosensing heparin based on surface plasmon enhanced energy transfer (SPEET) and folic acid (FA) modified try-AuNCs for in vivo cancer bioimaging. The SPEET/try-AuNCs fluorescence biosensor was designed via heparin mediated energy transfer between try-AuNCs and cysteamine modified gold nanoparticles (cyst-AuNPs). The developed SPEET/try-AuNCs fluorescence biosensor allowed sensitive and selective detection of heparin with a linear range of 0.1-4.0 μg mL(-1) and a detection limit (3s) of 0.05 μg mL(-1). The relative standard deviation for eleven replicate detections of 2.5 μg mL(-1) heparin was 1.1%, and the recoveries of the spiked heparin in human serum samples ranged from 97% to 100%. In addition, folic acid was immobilized on the surface of try-AuNCs to ameliorate the specific affinity of AuNCs for tumors, and the near-infrared fluorescent FA-try-AuNCs were applied for in vivo cancer imaging of high folate receptor (FR) expressing Hela tumor. In vivo study of the dynamic behavior and targeting ability of FA-try-AuNCs probe to Hela tumor bearing mice and normal nude mice validated the high specific affinity of FA-try-AuNCs probe to FR positive tumors. The results show that the prepared try-AuNCs have great potential as multifunctional biomaterials for biosensing biomolecules with SPEET mode and in vivo cancer imaging with high targeting ability.
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Affiliation(s)
- Jing-Min Liu
- State Key Laboratory of Medicinal Chemical Biology, and Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China
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75
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Jiang J, Zhao S, Huang Y, Qin G, Ye F. Highly sensitive immunoassay of carcinoembryonic antigen by capillary electrophoresis with gold nanoparticles amplified chemiluminescence detection. J Chromatogr A 2013; 1282:161-6. [DOI: 10.1016/j.chroma.2013.01.066] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 01/14/2013] [Accepted: 01/15/2013] [Indexed: 11/29/2022]
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76
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Ocsoy I, Gulbakan B, Shukoor MI, Xiong X, Chen T, Powell DH, Tan W. Aptamer-conjugated multifunctional nanoflowers as a platform for targeting, capture, and detection in laser desorption ionization mass spectrometry. ACS NANO 2013; 7:417-27. [PMID: 23211039 PMCID: PMC3568519 DOI: 10.1021/nn304458m] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Although many different nanomaterials have been tested as substrates for laser desorption and ionization mass spectrometry (LDI-MS), this emerging field still requires more efficient multifuncional nanomaterials for targeting, enrichment, and detection. Here, we report the use of gold manganese oxide (Au@MnO) hybrid nanoflowers as an efficient matrix for LDI-MS. The nanoflowers were also functionalized with two different aptamers to target cancer cells and capture adenosine triphosphate (ATP). These nanoflowers were successfully used for metabolite extraction from cancer cell lysates. Thus, in one system, our multifunctional nanoflowers can (1) act as an ionization substrate for mass spectrometry, (2) target cancer cells, and (3) detect and analyze metabolites from cancer cells.
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77
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Shu GW, Chiu CH, Huang LT, Lin TN, Yang CC, Wang JS, Yuan CT, Shen JL, Kuo HC, Lin CAJ, Chang WH, Wang HH, Yeh HI, Chan WH, Fan WC, Chou WC. Efficient energy transfer from InGaN quantum wells to Ag nanoparticles. Phys Chem Chem Phys 2013; 15:3618-22. [DOI: 10.1039/c3cp43894e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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78
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Chen Y, Ding L, Ju H. In situ tracing of cell surface sialic acid by chemoselective recognition to unload gold nanocluster probe from density tunable dendrimeric array. Chem Commun (Camb) 2013; 49:862-4. [DOI: 10.1039/c2cc37761f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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79
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Yuan Q, Lu D, Zhang X, Chen Z, Tan W. Aptamer-conjugated optical nanomaterials for bioanalysis. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2012.05.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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80
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Lee JH, Hwang JH, Nam JM. DNA-tailored plasmonic nanoparticles for biosensing applications. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2012; 5:96-109. [DOI: 10.1002/wnan.1196] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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81
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Ali MM, Kang DK, Tsang K, Fu M, Karp JM, Zhao W. Cell-surface sensors: lighting the cellular environment. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2012; 4:547-61. [PMID: 22761045 DOI: 10.1002/wnan.1179] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cell-surface sensors are powerful tools to elucidate cell functions including cell signaling, metabolism, and cell-to-cell communication. These sensors not only facilitate our understanding in basic biology but also advance the development of effective therapeutics and diagnostics. While genetically encoded fluorescent protein/peptide sensors have been most popular, emerging cell surface sensor systems including polymer-, nanoparticle-, and nucleic acid aptamer-based sensors have largely expanded our toolkits to interrogate complex cellular signaling and micro- or nano-environments. In particular, cell-surface sensors that interrogate in vivo cellular microenvironments represent an emerging trend in the development of next generation tools which biologists may routinely apply to elucidate cell biology in vivo and to develop new therapeutics and diagnostics. This review focuses on the most recent development in areas of cell-surface sensors. We will first discuss some recently reported genetically encoded sensors that were used for monitoring cellular metabolites, proteins, and neurotransmitters. We will then focus on the emerging cell surface sensor systems with emphasis on the use of DNA aptamer sensors for probing cell signaling and cell-to-cell communication.
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Affiliation(s)
- Md Monsur Ali
- Department of Pharmaceutical Sciences, University of California, Irvine, CA, USA
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82
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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] [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.
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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
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83
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Singh AK, Khan SA, Fan Z, Demeritte T, Senapati D, Kanchanapally R, Ray PC. Development of a long-range surface-enhanced Raman spectroscopy ruler. J Am Chem Soc 2012; 134:8662-9. [PMID: 22559168 DOI: 10.1021/ja301921k] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Optical-ruler-based distance measurements are essential for tracking biomolecular processes in a wide range of analytical biochemical applications. The normally used Förster resonance energy transfer (FRET) ruler is not useful for investigating distance-dependent properties when distances are more than 10 nm. Driven by this limitation, we have developed a long-range surface-enhanced Raman spectroscopy (SERS) optical ruler using oval-shaped gold nanoparticles and Rh6G dye-modified rigid, variable-length double-strand DNAs. The bifunctional rigid dsDNA molecule serves as the SERS-active ruler. Our experimental results show that one can tune the length of the SERS ruler between 8 and ∼18 nm by choosing the size of the oval-shaped gold nanoparticles. A possible mechanism for our observed distance-dependent SERS phenomenon is discussed using the Gersten and Nitzan model. Ultimately, our long-range SERS molecular rulers can be an important step toward understanding distance-dependent biological processes.
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Affiliation(s)
- Anant Kumar Singh
- Department of Chemistry, Jackson State University, Mississippi 39217-0510, United States
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84
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Abstract
AbstractThe ability of metal surfaces and nanostructures to localize and enhance optical fields is the primary reason for their application in biosensing and imaging. Local field enhancement boosts the signal-to-noise ratio in measurements and provides the possibility of imaging with resolutions significantly better than the diffraction limit. In fluorescence imaging, local field enhancement leads to improved brightness of molecular emission and to higher detection sensitivity and better discrimination. We review the principles of plasmonic fluorescence enhancement and discuss applications ranging from biosensing to bioimaging.
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85
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Huang PJJ, Liu J. DNA-length-dependent fluorescence signaling on graphene oxide surface. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:977-83. [PMID: 22323437 DOI: 10.1002/smll.201102156] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Revised: 12/12/2011] [Indexed: 05/15/2023]
Abstract
Fluorescence energy transfer to graphene oxide is studied using covalently linked DNA probes ranging from 4 to 70 base pairs. The characteristic distance and mechanism of energy transfer are reported.
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Affiliation(s)
- Po-Jung Jimmy Huang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
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86
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Liu J. Adsorption of DNA onto gold nanoparticles and graphene oxide: surface science and applications. Phys Chem Chem Phys 2012; 14:10485-96. [DOI: 10.1039/c2cp41186e] [Citation(s) in RCA: 291] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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87
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Zhong H, Zhang R, Zhang H, Zhang S. Modular design of an ultrahigh-intensity nanoparticle probe for cancer cell imaging and rapid visual detection of nucleic acids. Chem Commun (Camb) 2012; 48:6277-9. [DOI: 10.1039/c2cc31637d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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88
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Kim M, Ock K, Cho K, Joo SW, Lee SY. Live-cell monitoring of the glutathione-triggered release of the anticancer drug topotecan on gold nanoparticles in serum-containing media. Chem Commun (Camb) 2012; 48:4205-7. [DOI: 10.1039/c2cc30679d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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89
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Singh AK, Lu W, Senapati D, Khan SA, Fan Z, Senapati T, Demeritte T, Beqa L, Ray PC. Long-range nanoparticle surface-energy-transfer ruler for monitoring photothermal therapy response. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:2517-2525. [PMID: 21744496 PMCID: PMC3565009 DOI: 10.1002/smll.201100591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Revised: 05/16/2011] [Indexed: 05/29/2023]
Abstract
A recent gold nanotechnology-driven approach opens up a new possibility for the destruction of cancer cells through photothermal therapy. Ultimately, photothermal therapy may enter into clinical therapy and, as a result, there is an urgent need for techniques to monitor the tumor response to therapy. Driven by this need, a nanoparticle surface-energy-transfer (NSET) approach to monitor the photothermal therapy process by measuring a simple fluorescence intensity change is reported. The fluorescence intensity change is due to the light-controlled photothermal release of single-stranded DNA/RNA via dehybridization during the therapy process. Time-dependent results show that just by measuring the fluorescence intensity change, the photothermal therapy response during the therapy process can be monitored. The possible mechanism and operating principle of the NSET assay are discussed. Ultimately, this NSET assay could have enormous potential applications in rapid, on-site monitoring of the photothermal therapy process, which is critical to providing effective treatment of cancer and multidrug-resistant bacterial infections.
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90
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Wang F, Wang YC, Dou S, Xiong MH, Sun TM, Wang J. Doxorubicin-tethered responsive gold nanoparticles facilitate intracellular drug delivery for overcoming multidrug resistance in cancer cells. ACS NANO 2011; 5:3679-92. [PMID: 21462992 DOI: 10.1021/nn200007z] [Citation(s) in RCA: 479] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Multidrug resistance (MDR) is a major impediment to the success of cancer chemotherapy. Through the development of a drug delivery system that tethers doxorubicin onto the surface of gold nanoparticles with a poly(ethylene glycol) spacer via an acid-labile linkage (DOX-Hyd@AuNPs), we have demonstrated that multidrug resistance in cancer cells can be significantly overcome by a combination of highly efficient cellular entry and a responsive intracellular release of doxorubicin from the gold nanoparticles in acidic organelles. DOX-Hyd@AuNPs achieved enhanced drug accumulation and retention in multidrug resistant MCF-7/ADR cancer cells when it was compared with free doxorubicin. It released doxorubicin in response to the pH of acidic organelles following endocytosis, opposite to the noneffective drug release from doxorubicin-tethered gold nanoparticles via the carbamate linkage (DOX-Cbm@AuNPs), which was shown by the recovered fluorescence of doxorubicin from quenching due to the nanosurface energy transfer between the doxorubicinyl groups and the gold nanoparticles. DOX-Hyd@AuNPs therefore significantly enhanced the cytotoxicity of doxorubicin and induced elevated apoptosis of MCF-7/ADR cancer cells. With a combined therapeutic potential and ability to probe drug release, DOX-Hyd@AuNPs represent a model with dual roles in overcoming MDR in cancer cells and probing the intracellular release of drug from its delivery system.
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Affiliation(s)
- Feng Wang
- CAS Key Laboratory of Brain Function and Disease, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, P. R. China
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91
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Hu R, Zhang XB, Kong RM, Zhao XH, Jiang J, Tan W. Nucleic acid-functionalized nanomaterials for bioimaging applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm12588e] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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