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Li T, Zhang Y, Wu F, Chen G, Li C, Wang Q. Rational Design of NIR-II Ratiometric Fluorescence Probes for Accurate Bioimaging and Biosensing In Vivo. SMALL METHODS 2024:e2400132. [PMID: 38470209 DOI: 10.1002/smtd.202400132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/27/2024] [Indexed: 03/13/2024]
Abstract
Intravital fluorescence imaging in the second near-infrared window (NIR-II, 900-1700 nm) has emerged as a promising method for non-invasive diagnostics in complex biological systems due to its advantages of less background interference, high tissue penetration depth, high imaging contrast, and sensitivity. However, traditional NIR-II fluorescence imaging, which is characterized by the "always on" or "turn on" mode, lacks the ability of quantitative detection, leading to low reproducibility and reliability during bio-detection. In contrast, NIR-II ratiometric fluorescence imaging can realize quantitative and reliable analysis and detection in vivo by providing reference signals for fluorescence correction, generating new opportunities and prospects during in vivo bioimaging and biosensing. In this review, the current design strategies and sensing mechanisms of NIR-II ratiometric fluorescence probes for bioimaging and biosensing applications are systematically summarized. Further, current challenges, future perspectives and opportunities for designing NIR-II ratiometric fluorescence probes are also discussed. It is hoped that this review can provide effective guidance for the design of NIR-II ratiometric fluorescence probes and promote its adoption in reliable biological imaging and sensing in vivo.
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Affiliation(s)
- Tuanwei Li
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Key Laboratory of Functional Molecular Imaging Technology, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Yejun Zhang
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Key Laboratory of Functional Molecular Imaging Technology, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Feng Wu
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Key Laboratory of Functional Molecular Imaging Technology, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Guangcun Chen
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Key Laboratory of Functional Molecular Imaging Technology, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Chunyan Li
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Key Laboratory of Functional Molecular Imaging Technology, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Qiangbin Wang
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Key Laboratory of Functional Molecular Imaging Technology, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
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Lei S, Jiang K, Zhang C, Sun W, Pan Y, Wang D, Huang P, Lin J. A FRET-Based Ratiometric H 2S Sensor for Sensitive Optical Molecular Imaging in Second Near-Infrared Window. RESEARCH (WASHINGTON, D.C.) 2023; 6:0286. [PMID: 38162986 PMCID: PMC10755252 DOI: 10.34133/research.0286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 11/18/2023] [Indexed: 01/03/2024]
Abstract
Second near-infrared (NIR-II) window optical molecular imaging kicks off a new revolution in high-quality imaging in vivo, but always suffers from the hurdles of inevitable tissue autofluorescence background and NIR-II probe development. Here, we prepare a Förster resonance energy transfer-based ratiometric NIR-II window hydrogen sulfide (H2S) sensor through the combination of an H2S-responsive NIR-II cyanine dye (acceptor, LET-1055) and an H2S-inert rhodamine hybrid polymethine dye (donor, Rh930). This sensor not only exhibits high sensitivity and selectivity, but also shows rapid reaction kinetics (~20 min) and relatively low limit of detection (~96 nM) toward H2S, allowing in vivo ratiometric NIR-II fluorescence imaging of orthotopic liver and colon tumors and visualization of the drug-induced hepatic H2S fluctuations. Our findings provide the potential for advancing the feasibility of NIR-II activity-based sensing for in vivo clinical diagnosis.
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Affiliation(s)
- Shan Lei
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Shenzhen Key Laboratory of Tumor Visualization Molecular Medicine, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering,
Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Kejia Jiang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Shenzhen Key Laboratory of Tumor Visualization Molecular Medicine, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering,
Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Chenqing Zhang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Shenzhen Key Laboratory of Tumor Visualization Molecular Medicine, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering,
Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Wei Sun
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Shenzhen Key Laboratory of Tumor Visualization Molecular Medicine, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering,
Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Yuantao Pan
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Shenzhen Key Laboratory of Tumor Visualization Molecular Medicine, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering,
Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Dong Wang
- Center for AIE Research, College of Materials Science and Engineering,
Shenzhen University, Shenzhen 518060, China
| | - Peng Huang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Shenzhen Key Laboratory of Tumor Visualization Molecular Medicine, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering,
Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Jing Lin
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Shenzhen Key Laboratory of Tumor Visualization Molecular Medicine, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering,
Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
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Li Z, Xie M, Nie G, Wang J, Huang L. Pushing Optical Virus Detection to a Single Particle through a High- Q Quasi-bound State in the Continuum in an All-dielectric Metasurface. J Phys Chem Lett 2023; 14:10762-10768. [PMID: 38010952 DOI: 10.1021/acs.jpclett.3c02763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Bound states in the continuum (BICs) have emerged as a powerful platform for boosting light-matter interactions because they provide an alternative way of realizing optical resonances with ultrahigh quality factors, accompanied by extreme field confinement. In this work, we realized an optical biosensor by harnessing a quasi-BIC (qBIC) supported by an all-dielectric metasurface with broken symmetry, whose unit cell is composed of a silicon cuboid with two asymmetric air holes. Thanks to the excellent field confinement within the air gap of a metasurface enabled by such a high-Q qBIC, the figure of merit (FOM) of the biosensor is up to 2136.35 RIU-1. Futhermore, we demonstrated that such a high-Q metasurface can push the detection limit to a few virus particles. Our results may find exciting applications in extreme biochemical sensing like COVID-19 with ultralow concentrations.
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Affiliation(s)
- Zonglin Li
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
- Hunan Provincial Key Laboratory of Intelligent Sensors and New Sensor Materials, Xiangtan 411201, Hunan, China
| | - Mingxin Xie
- School of Microelectronics and Physics, Hunan University of Technology and Business, Changsha 410205, China
| | - Guozheng Nie
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
- Hunan Provincial Key Laboratory of Intelligent Sensors and New Sensor Materials, Xiangtan 411201, Hunan, China
- School of Microelectronics and Physics, Hunan University of Technology and Business, Changsha 410205, China
| | - Junhui Wang
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
| | - Lujun Huang
- School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
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Fang L, Ai R, Wang W, Tan L, Li C, Wang D, Jiang R, Qiu F, Qi L, Yang J, Zhou W, Zhu T, Tan W, Jiang Y, Fang X. Hyperbranched Polymer Dots with Strong Absorption and High Fluorescence Quantum Yield for In Vivo NIR-II Imaging. NANO LETTERS 2023; 23:8734-8742. [PMID: 37669506 DOI: 10.1021/acs.nanolett.3c02751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
In order to improve the fluorescence quantum yield (QY) of NIR-II-emitting nanoparticles, D-A-D fluorophores are typically linked to intramolecular rotatable units to reduce aggregation-induced quenching. However, incorporating such units often leads to a twisted molecular backbone, which affects the coupling within the D-A-D unit and, as a result, lowers the absorption. Here, we overcome this limitation by cross-linking the NIR-II fluorophores to form a 2D polymer network, which simultaneously achieves a high QY by well-controlled fluorophore separation and strong absorption by restricting intramolecular distortion. Using the strategy, we developed polymer dots with the highest NIR-II single-particle brightness among reported D-A-D-based nanoparticles and applied them for imaging of hindlimb vasculatures and tumors as well as fluorescence-guided tumor resection. The high brightness of the polymer dots offered exceptional image quality and excellent surgical results, showing a promising performance for these applications.
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Affiliation(s)
- Le Fang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
- Department of Gynecological Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, People's Republic of China
| | - Rui Ai
- School of Molecular Medicine, Hangzhou Institute for Advanced Study, University of the Chinese Academy of Sciences, Hangzhou, Zhejiang 310024, People's Republic of China
| | - Wenxi Wang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Lei Tan
- Department of Physics, School of Sciences, Wuhan University of Technology, Wuhan, Hubei 430070, People's Republic of China
| | - Chanyuan Li
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Dachi Wang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Ruibin Jiang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Fensheng Qiu
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Liqing Qi
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Jian Yang
- School of Molecular Medicine, Hangzhou Institute for Advanced Study, University of the Chinese Academy of Sciences, Hangzhou, Zhejiang 310024, People's Republic of China
| | - Wei Zhou
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Tao Zhu
- Department of Gynecological Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, People's Republic of China
| | - Weihong Tan
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Yifei Jiang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Xiaohong Fang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, People's Republic of China
- School of Molecular Medicine, Hangzhou Institute for Advanced Study, University of the Chinese Academy of Sciences, Hangzhou, Zhejiang 310024, People's Republic of China
- Beijing National Research Center for Molecular Sciences, Institute of Chemistry, Key Laboratory of Molecular Nanostructure and Nanotechnology, Chinese Academy of Science, Beijing 100190, People's Republic of China
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Iraniparast M, Peng B, Sokolov I. Towards the Use of Individual Fluorescent Nanoparticles as Ratiometric Sensors: Spectral Robustness of Ultrabright Nanoporous Silica Nanoparticles. SENSORS (BASEL, SWITZERLAND) 2023; 23:3471. [PMID: 37050530 PMCID: PMC10098630 DOI: 10.3390/s23073471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 03/22/2023] [Accepted: 03/22/2023] [Indexed: 06/19/2023]
Abstract
Here we address an important roadblock that prevents the use of bright fluorescent nanoparticles as individual ratiometric sensors: the possible variation of fluorescence spectra between individual nanoparticles. Ratiometric measurements using florescent dyes have shown their utility in measuring the spatial distribution of temperature, acidity, and concentration of various ions. However, the dyes have a serious limitation in their use as sensors; namely, their fluorescent spectra can change due to interactions with the surrounding dye. Encapsulation of the d, e in a porous material can solve this issue. Recently, we demonstrated the use of ultrabright nanoporous silica nanoparticles (UNSNP) to measure temperature and acidity. The particles have at least two kinds of encapsulated dyes. Ultrahigh brightness of the particles allows measuring of the signal of interest at the single particle level. However, it raises the problem of spectral variation between particles, which is impossible to control at the nanoscale. Here, we study spectral variations between the UNSNP which have two different encapsulated dyes: rhodamine R6G and RB. The dyes can be used to measure temperature. We synthesized these particles using three different ratios of the dyes. We measured the spectra of individual nanoparticles and compared them with simulations. We observed a rather small variation of fluorescence spectra between individual UNSNP, and the spectra were in very good agreement with the results of our simulations. Thus, one can conclude that individual UNSNP can be used as effective ratiometric sensors.
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Affiliation(s)
- Mahshid Iraniparast
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
| | - Berney Peng
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
| | - Igor Sokolov
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
- Department of Physics, Tufts University, Medford, MA 02155, USA
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