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Chen G, Wang L, He P, Su T, Lai Q, Kuo HC, Wu W, Chen SL, Tu CC. Biodistributions and Imaging of Poly(ethylene glycol)-Conjugated Silicon Quantum Dot Nanoparticles in Osteosarcoma Models via Intravenous and Intratumoral Injections. ACS APPLIED BIO MATERIALS 2023; 6:4856-4866. [PMID: 37843986 DOI: 10.1021/acsabm.3c00595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Osteosarcoma is a malignant tumor with relatively high mortality rates in children and adolescents. While nanoparticles have been widely used in assisting the diagnosis and treatment of cancers, the biodistributions of nanoparticles in osteosarcoma models have not been well studied. Herein, we synthesize biocompatible and highly photoluminescent silicon quantum dot nanoparticles (SiQDNPs) and investigate their biodistributions in osteosarcoma mouse models after intravenous and intratumoral injections by fluorescence imaging. The bovine serum albumin (BSA)-coated and poly(ethylene glycol) (PEG)-conjugated SiQDNPs, when dispersed in phosphate-buffered saline (PBS), can emit red photoluminescence with the photoluminescence quantum yield more than 30% and have very low in vitro and in vivo toxicity. The biodistributions after intravenous injections reveal that the SiQDNPs are mainly metabolized through the livers in mice, while only slight accumulation in the osteosarcoma tumor is observed. Furthermore, the PEG conjugation can effectively extend the circulation time. Finally, a mixture of SiQDNPs and indocyanine green (ICG), which complement each other in the spectral range and diffusion length, is directly injected into the tumor for imaging. After the injection, the SiQDNPs with relatively large particle sizes stay around the injection site, while the ICG molecules diffuse over a broad range, especially in the muscular tissue. By taking advantage of this property, the difference between the osteosarcoma tumor and normal muscular tissue is demonstrated.
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Affiliation(s)
- Guo Chen
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lei Wang
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Pengbo He
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Taiyu Su
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qingxuan Lai
- Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hao-Chung Kuo
- Hon Hai Research Institute, Foxconn Technology Group, Shenzhen 518109, China
| | - Wen Wu
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
- Engineering Research Center of Digital Medicine and Clinical Translation, Ministry of Education, Shanghai 200030, China
| | - Sung-Liang Chen
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
- Engineering Research Center of Digital Medicine and Clinical Translation, Ministry of Education, Shanghai 200030, China
| | - Chang-Ching Tu
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
- Engineering Research Center of Digital Medicine and Clinical Translation, Ministry of Education, Shanghai 200030, China
- Hon Hai Research Institute, Foxconn Technology Group, Shenzhen 518109, China
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Wu C, Zhang S, Zheng Y, Wang A, Zhao Q, Sun W, Liu W, Long C, Wang Q. Solvent-Type Passivation Strategy Controls Solid-State Self-Quenching-Resistant Behavior in Sulfur Dots. Inorg Chem 2022; 61:21157-21168. [PMID: 36520141 DOI: 10.1021/acs.inorgchem.2c04002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Treatment of sulfur dots with polyethylene glycol (PEG) has been an efficient way to achieve a high luminescence quantum yield, and such a PEG-related quantum dot (QD)-synthesis strategy has been well documented. However, the polymeric insulating capping layer acting as the "thick shell" will significantly slow down the electron-transfer efficiency and severely hamper its practical application in an optoelectric field. Especially, the employment of synthetic polymers with long alkyl chains or large molecular weights may lead to structural complexity or even unexpected changes of physical characteristics for QDs. Therefore, in sulfur dot preparation, it is a breakthrough to use short-chain molecular species to replace PEG for better control and reproducibility. In this article, a solvent-type passivation (STP) strategy has been reported, and no PEG or any other capping agent is required. The main role of the solvent, ethanol, is to directly react with NaOH, and the generated sodium ethoxide passivates the surface defects. The afforded STP-enhanced emission sulfur dots (STPEE-SDs) possess not only the self-quenching-resistant feature in the solid state but also the extension of fluorescence band toward the wavelength as long as 645 nm. The realization of sulfur dot emission in the deep-red region with a decent yield (8.7%) has never been reported. Moreover, a super large Stokes shift (300 nm, λex = 345 nm, λem = 645 nm) and a much longer decay lifetime (109 μs) have been found, and such values can facilitate to suppress the negative influence from background signals. Density functional theory demonstrates that the surface passivation via sodium ethoxide is dynamically favorable, and the spectroscopic insights into emission behavior could be derived from the passivation effect of the sulfur vacancy as well as the charge-transfer process dominated by the highly electronegative ethoxide layer.
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Affiliation(s)
- Chuqiao Wu
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou510006, China
| | - Shuting Zhang
- Department of Pharmacy, Huizhou Health Sciences Polytechnic, Huizhou516025, China
| | - Yuhui Zheng
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou510006, China
| | - Aiqi Wang
- Department of Pharmacy, Huizhou Health Sciences Polytechnic, Huizhou516025, China
| | - Qiming Zhao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan411201, China
| | - Wenjie Sun
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou510006, China
| | - Wanqiang Liu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan411201, China
| | - Chenggang Long
- Ruide Technologies (Foshan) Inc, Foshan, Guangdong528311, China
| | - Qianming Wang
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou510006, China
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Shao Q, Ding H, Yao L, Xu J, Liang C, Li Z, Dong Y, Jiang J. Broadband near-infrared light source derived from Cr 3+-doped phosphors and a blue LED chip. OPTICS LETTERS 2018; 43:5251-5254. [PMID: 30382980 DOI: 10.1364/ol.43.005251] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 09/27/2018] [Indexed: 05/20/2023]
Abstract
NIR-emitting YAl3(BO3)4:Cr3+/Yb3+ (YAB:Cr/Yb) and NaScSi2O6:Cr3+ (BSSO:Cr) phosphors were demonstrated as luminescent converters for broadband NIR phosphor-converted LEDs (pc-LEDs). YAB:Cr/Yb phosphors show emissions in 670-800 nm (Cr3+ emission) and 950-1050 nm (Yb3+ emission) upon excitation at 450 nm. In the BSSO host, Cr3+ ions occupy Sc3+ sites with relatively weak crystal field, and thus a broadband Cr3+ emission at longer wavelengths of 750-950 nm is found for BSSO:Cr phosphors. Moreover, temperature-dependent spectral studies indicate that both YAB:Cr/Yb and BSSO:Cr phosphors exhibit good thermal stability, and more than 80% of the initial emission intensities can be sustained at 150°C. A NIR pc-LED prototype was fabricated by integrating these two phosphors with a blue LED chip (∼450 nm), which generated a broadband emission in the NIR spectral range from 780 to 1050 nm. A NIR light output power of ∼26 mW was achieved at the injection current of 100 mA, with the corresponding energy conversion efficiency of ∼8.6%.
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Tu CC, Chen KP, Yang TA, Chou MY, Lin LY, Li YK. Silicon Quantum Dot Nanoparticles with Antifouling Coatings for Immunostaining on Live Cancer Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13714-13723. [PMID: 27198164 DOI: 10.1021/acsami.6b02318] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Fluorescent silicon quantum dots (SiQDs) have shown a great potential as antiphotobleaching, nontoxic and biodegradable labels for various in vitro and in vivo applications. However, fabricating SiQDs with high water-solubility and high photoluminescence quantum yield (PLQY) remains a challenge. Furthermore, for targeted imaging, their surface chemistry has to be capable of conjugating to antibodies, as well as sufficiently antifouling. Herein, antibody-conjugated SiQD nanoparticles (SiQD-NPs) with antifouling coatings composed of bovine serum albumin (BSA) and polyethylene glycol (PEG) are demonstrated for immunostaining on live cancer cells. The monodisperse SiQD-NPs of diameter about 130 nm are synthesized by a novel top-down method, including electrochemical etching, photochemical hydrosilylation, high energy ball milling, and "selective-etching" in HNO3 and HF. Subsequently, the BSA and PEG are covalently grafted on to the SiQD-NP surface through presynthesized chemical linkers, resulting in a stable, hydrophilic, and antifouling organic capping layer with isothiocyanates as the terminal functional groups for facile conjugation to the antibodies. The in vitro cell viability assay reveals that the BSA-coated SiQD-NPs had exceptional biocompatibility, with minimal cytotoxicity at concentration up to 1600 μg mL(-1). Under 365 nm excitation, the SiQD-NP colloid emits bright reddish photoluminescence with PLQY = 45-55% in organic solvent and 5-10% in aqueous buffer. Finally, through confocal fluorescent imaging and flow cytometry analysis, the anti-HER2 conjugated SiQD-NPs show obvious specific binding to the HER2-overexpressing SKOV3 cells and negligible nonspecific binding to the HER2-nonexpressing CHO cells. Under similar experimental conditions, the immunofluorescence results obtained with the SiQD-NPs are comparable to those using conventional fluorescein isothiocyanate (FITC).
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Affiliation(s)
- Chang-Ching Tu
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 300, ROC
- LumiSands Inc. , Seattle, Washington 98105, United States
| | - Kuang-Po Chen
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 300, ROC
| | - Tsu-An Yang
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 300, ROC
| | - Min-Yuan Chou
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute , Hsinchu, Taiwan 310, ROC
| | - Lih Y Lin
- Department of Electrical Engineering, University of Washington , Seattle, Washington 98195, United States
| | - Yaw-Kuen Li
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 300, ROC
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Peng H, Cui B, Zhao W, Zhao X, Wang Y, Chang Z, Wang Y. Development of a Fe3O4@SnO2:Er3+,Yb3+–APTES nanocarrier for microwave-triggered controllable drug release, and the study of the loading and release mechanisms using microcalorimetry. NEW J CHEM 2016. [DOI: 10.1039/c5nj02619a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New multifunctional core–shell nanocomposites were synthesized and applied as an efficient microwave sensitive nanocarrier for on-command drug release.
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Affiliation(s)
- Hongxia Peng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- School of Chemistry & Materials Science
- Northwest University
- Xi’an 710069
| | - Bin Cui
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- School of Chemistry & Materials Science
- Northwest University
- Xi’an 710069
| | - Weiwei Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- School of Chemistry & Materials Science
- Northwest University
- Xi’an 710069
| | - Xiaotong Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- School of Chemistry & Materials Science
- Northwest University
- Xi’an 710069
| | - Yingsai Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- School of Chemistry & Materials Science
- Northwest University
- Xi’an 710069
| | - Zhuguo Chang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- School of Chemistry & Materials Science
- Northwest University
- Xi’an 710069
| | - Yaoyu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- School of Chemistry & Materials Science
- Northwest University
- Xi’an 710069
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