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Ponomaryova TS, Olomskaya VV, Abalymov AA, Anisimov RA, Drozd DD, Drozd AV, Novikova AS, Lomova MV, Zakharevich AM, Goryacheva IY, Goryacheva OA. Visualization of 2D and 3D Tissue Models via Size-Selected Aqueous AgInS/ZnS Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39058959 DOI: 10.1021/acsami.4c05681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Three-dimensional (3D) spheroid cell cultures of fibroblast (L929) and tumor mammary mouse (4T1) were chosen as in vitro tissue models for tissue imaging of ternary AgInS/ZnS fraction quantum dots (QDs). We showed that the tissue-mimetic morphology of cell spheroids through well-developed cell-cell and cell-matrix interactions and distinct diffusion/transport characteristics makes it possible to predict the effect of ternary AgInS/ZnS fraction QDs on the vital activity of cells while simultaneously comparing with classical two-dimensional (2D) cell cultures. The AgInS/ZnS fractions, emitting in a wide spectral range from 635 to 535 nm with a mean size from ∼3.1 ± 0.8 to ∼1.8 ± 0.4 nm and a long photoluminescence lifetime, were separated from the initial QD ensemble by using antisolvent-induced precipitation. For ternary AgInS/ZnS fraction QDs, the absence of toxicity at different QD concentrations was demonstrated on 2D and 3D cell structures. QDs show a robust correlation between numerous factors: their sizes in biological fluids over time, penetration capabilities into 2D and 3D cell structures, and selectivity with respect to penetration into cancerous and healthy cell spheroids. A reproducible protocol for the preparation of QDs along with their unique biological properties allows us to consider ternary AgInS/ZnS fraction QDs as attractive fluorescent contrast agents for tissue imaging.
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2
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Huang X, Li C, Wei T, Zou L, Liu N, Bai C, Yao Y, Wang Z, Li B, Qiao D, Niu Y, Wang X, Tang M. Influence of silver doping on pro-inflammatory and pro-fibrogenic effects of nano-titanium dioxide in murine lung. ENVIRONMENTAL TOXICOLOGY 2024; 39:1388-1401. [PMID: 37986241 DOI: 10.1002/tox.24045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 09/25/2023] [Accepted: 11/05/2023] [Indexed: 11/22/2023]
Abstract
Silver is usually loaded on nano-titanium dioxide (TiO2 ) through photodeposition method to enhance visible-light catalytic functions for environment purification. However, little is known about how the toxicity changes after silver doping and how the physicochemical properties of loaded components affect nanocomposite toxicity. In this study, Ag-TiO2 with different sizes and contents of silver particles were obtained by controlling photodeposition time (PDT) and silver addition amount. Pro-inflammatory and pro-fibrogenic responses of these photocatalysts were evaluated in male C57BL/6J murine lung. As a result, silver was well assembled on TiO2 , promoting visible-light catalytic activity. Notably, the size of silver particles increased with PDT. Meanwhile, toxicity results showed that pure TiO2 (P25) mainly caused neutrophil infiltration, while 2 wt/wt% silver-loaded TiO2 recruited more types of inflammatory cells in the lung. Both of them caused the increase of proinflammatory cytokines while decreasing the anti-inflammatory cytokine in bronchoalveolar lavage fluid. However, 2 wt/wt% silver doping also accelerated the lung pro-fibrogenic response of photocatalysts in the subacute phase from evidence of collagen deposition and hydroxyproline concentrations. Mechanistically, the overactivation of TGFBR2 receptors in TGF-β/smads pathways by silver-loaded TiO2 rather than pure TiO2 may be the reason why silver-loaded TiO2 can promote pro-fibrogenic effect response. Intriguingly, the increased toxicity caused by silver doping can be rescued by increasing the size of the loaded silver or decreasing the silver amount. These results may be important for the new understanding of the toxicity of TiO2 -based photocatalysts.
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Affiliation(s)
- Xiaoquan Huang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Congcong Li
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Tingting Wei
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Lingyue Zou
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Na Liu
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Changcun Bai
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Yongshuai Yao
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Zhihui Wang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Binjing Li
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Dong Qiao
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Yiru Niu
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Xiaoli Wang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Meng Tang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education; School of Public Health, Southeast University, Nanjing, People's Republic of China
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3
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Chen K, Wang Y. CRISPR/Cas systems for in situ imaging of intracellular nucleic acids: Concepts and applications. Biotechnol Bioeng 2023; 120:3446-3464. [PMID: 37641170 DOI: 10.1002/bit.28543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 07/13/2023] [Accepted: 08/15/2023] [Indexed: 08/31/2023]
Abstract
Accurate and precise localization of intracellular nucleic acids is crucial for regulating genetic information transcription and diagnosing diseases. Although intracellular nucleic acid imaging methods are available for various cell types, their widespread utilization is impeded by the intricate nature of the process and its exorbitant cost. Recently, numerous intracellular nucleic acid labeling techniques based on clustered regularly interspaced short palindromic repeats (CRISPR) have been established due to their modularity, flexibility, and specificity. In this work, we present various CRISPR methods that are currently employed for visualizing intracellular genomic sequences and RNA, based on their detection principles and application scenarios. Furthermore, we discuss the advantages and drawbacks of the existing CRISPR imaging methods, as well as future research directions. We anticipate that with continued refinement, more advanced CRISPR-based imaging techniques can be developed to better elucidate the localization and dynamics of intracellular nucleic acids, thereby providing a powerful tool for molecular biology research and clinical molecular pathology diagnosis.
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Affiliation(s)
- Kun Chen
- Department of Clinical Laboratory, Peking University Cancer Hospital & Institute, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing, China
| | - Yufei Wang
- Department of Clinical Diagnosis, Laboratory of Beijing Tiantan Hospital, Capital Medical University, NMPA Key Laboratory for Quality Control of In Vitro Diagnostics, Beijing Engineering Research Center of Immunological Reagents Clinical Research, Beijing, China
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4
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Chen Y, Xue Q, Luo W, Sun Y, Li M, Hang T. ZnO/ZnS core-shell quantum dots with enhanced ultraviolet fluorescence and low cytotoxicity for cell imaging. NANOTECHNOLOGY 2023; 34:505704. [PMID: 37714140 DOI: 10.1088/1361-6528/acfa06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 09/15/2023] [Indexed: 09/17/2023]
Abstract
Zinc oxide quantum dots (ZnO QDs) have gained wide attention due to their wide excitation spectrum, large Stokes shift, adjustable photoluminescence (PL) spectrum, and excellent biocompatibility. However, low fluorescence intensity and poor stability restrict their further applications. In this work, zinc sulfide (ZnS) as a surface modifier, ZnO/ZnS core-shell QDs with type-I core-shell structure and particle size of 5 nm were prepared via sol-gel method. Transmission electron microscope characterization demonstrates the core-shell structure and spherical morphology of the as-synthesized ZnO/ZnS QDs. The PL spectra show that ultraviolet fluorescence has been greatly enhanced. The maximum fluorescence intensity of ZnO/ZnS core-shell QDs increases by 5288.6% compared with that of bare ZnO QDs. The PL quantum yield increases from 9.53% to 30.95%. After being stored for three weeks, the fluorescence performance can be well retained. Furthermore, the cytotoxicity tests confirm the excellent biocompatibility of ZnO/ZnS core-shell QDs, demonstrating they are good candidates for cell imaging.
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Affiliation(s)
- Yuhang Chen
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Qi Xue
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Weiguo Luo
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Yu Sun
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Ming Li
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Tao Hang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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5
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Qiao D, Zhang T, Tang M. Autophagy regulation by inorganic, organic, and organic/inorganic hybrid nanoparticles: Organelle damage, regulation factors, and potential pathways. J Biochem Mol Toxicol 2023; 37:e23429. [PMID: 37409715 DOI: 10.1002/jbt.23429] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 03/30/2023] [Accepted: 06/12/2023] [Indexed: 07/07/2023]
Abstract
The rapid development of nanotechnology requires a more thorough understanding of the potential health effects caused by nanoparticles (NPs). As a programmed cell death, autophagy is one of the biological effects induced by NPs, which maintain intracellular homeostasis by degrading damaged organelles and removing aggregates of defective proteins through lysosomes. Currently, autophagy has been shown to be associated with the development of several diseases. A significant number of research have demonstrated that most NPs can regulate autophagy, and their regulation of autophagy is divided into induction and blockade. Studying the autophagy regulation by NPs will facilitate a more comprehensive understanding of the toxicity of NPs. In this review, we will illustrate the effects of different types of NPs on autophagy, including inorganic NPs, organic NPs, and organic/inorganic hybrid NPs. The potential mechanisms by which NPs regulate autophagy are highlighted, including organelle damage, oxidative stress, inducible factors, and multiple signaling pathways. In addition, we list the factors influencing NPs-regulated autophagy. This review may provide basic information for the safety assessment of NPs.
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Affiliation(s)
- Dong Qiao
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China
| | - Ting Zhang
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China
| | - Meng Tang
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China
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6
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Lacivita V, Tarantino F, Molaei R, Moradi M, Conte A, Alessandro Del Nobile M. Carbon dots from sour whey to develop a novel antimicrobial packaging for fiordilatte cheese. Food Res Int 2023; 172:113159. [PMID: 37689912 DOI: 10.1016/j.foodres.2023.113159] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/09/2023] [Accepted: 06/16/2023] [Indexed: 09/11/2023]
Abstract
In this study, monodispersed and quasi-spherical C-Dots with an average size of 7.2 nm were successfully synthesized from sour whey solution by a hydrothermal method (200 °C for 9 h) for fiordilatte cheese packaging. C-Dots (2500 and 5000 mgL-1) were added to the cheese through an alginate-based coating or directly to the cheese brine. No significant changes in TM4 cell viability were observed at concentrations lower than 10,000 mgL-1. Microbiological and sensory properties of cheese coated and uncoated with C-Dots indicate a substantial preserving effect of the C-Dots. The uncoated control fiordilatte exhibited unacceptable levels of microbial proliferation within 3.5 days. Conversely, the coated cheese remained within acceptable limits, effectively doubling its shelf life compared to the control, primarily due to the coating protection rather than the addition of C-Dots. When compared to the control fiordilatte, the addition of C-Dots in the brine at 5000 mgL-1 resulted in an extension of over 10 days in cheese shelf life. Considering the significance of the sustainable approach in C-Dots synthesis and the exceptional use of C-Dots in the food industry, these findings hold great potential in terms of research and industrial applications.
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Affiliation(s)
- Valentina Lacivita
- Department of Agricultural Sciences, Food and Environment, University of Foggia, Via Napoli, 25 - 71122 Foggia, Italy
| | - Francesca Tarantino
- Department of Agricultural Sciences, Food and Environment, University of Foggia, Via Napoli, 25 - 71122 Foggia, Italy
| | | | - Mehran Moradi
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, 1177 Urmia, Iran
| | - Amalia Conte
- Department of Agricultural Sciences, Food and Environment, University of Foggia, Via Napoli, 25 - 71122 Foggia, Italy.
| | - Matteo Alessandro Del Nobile
- Department of Agricultural Sciences, Food and Environment, University of Foggia, Via Napoli, 25 - 71122 Foggia, Italy
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7
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Pirmoradi L, Shojaei S, Ghavami S, Zarepour A, Zarrabi A. Autophagy and Biomaterials: A Brief Overview of the Impact of Autophagy in Biomaterial Applications. Pharmaceutics 2023; 15:2284. [PMID: 37765253 PMCID: PMC10536801 DOI: 10.3390/pharmaceutics15092284] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/17/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Macroautophagy (hereafter autophagy), a tightly regulated physiological process that obliterates dysfunctional and damaged organelles and proteins, has a crucial role when biomaterials are applied for various purposes, including diagnosis, treatment, tissue engineering, and targeted drug delivery. The unparalleled physiochemical properties of nanomaterials make them a key component of medical strategies in different areas, such as osteogenesis, angiogenesis, neurodegenerative disease treatment, and cancer therapy. The application of implants and their modulatory effects on autophagy have been known in recent years. However, more studies are necessary to clarify the interactions and all the involved mechanisms. The advantages and disadvantages of nanomaterial-mediated autophagy need serious attention in both the biological and bioengineering fields. In this mini-review, the role of autophagy after biomaterial exploitation and the possible related mechanisms are explored.
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Affiliation(s)
- Leila Pirmoradi
- Department of Medical Physiology and Pharmacology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj 66177-13446, Iran;
| | - Shahla Shojaei
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0V9, Canada;
| | - Saeid Ghavami
- Academy of Silesia, Faculty of Medicine, Rolna 43, 40-555 Katowice, Poland
- Research Institute of Oncology and Hematology, Cancer Care Manitoba-University of Manitoba, Winnipeg, MB R3E 0V9, Canada
- Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - Atefeh Zarepour
- Department of Biomedical Engineering, Faculty of Engineering & Natural Sciences, Istinye University, Istanbul 34396, Türkiye;
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering & Natural Sciences, Istinye University, Istanbul 34396, Türkiye;
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8
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Tsai HY, Robidillo CJT, Matharu GK, O'Connor K, Cheong IT, Ni C, Veinot JGC, Algar WR. Spectrotemporal characterization of photoluminescent silicon nanocrystals and their energy transfer to dyes. NANOSCALE 2023. [PMID: 37449921 DOI: 10.1039/d3nr02461j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Silicon nanocrystals (SiNCs) are a promising material for applications in bioanalysis and imaging. Compared to other types of semiconductor nanocrystals, the development and characterization of energy transfer (ET) configurations with SiNCs has been far more limited, resulting in an equally limited understanding of this process and its SiNC-specific nuances. Here, we present a systematic and detailed study of ET between SiNCs and dyes. A combination of spectroelectrophoresis and time-gated and time-resolved photoluminescence measurements were used to characterize the photophysical properties of ensembles of SiNCs and gain insight into how these properties varied as a function of nanocrystal size. ET between SiNC donors and a series of non-fluorescent Black Hole Quencher (BHQ) dyes and fluorescent sulfo-Cyanine 5.5 dye acceptors was evaluated in terms of spectral properties, wavelength-resolved efficiencies, trends with spectral overlap integral, and differences between two methods of BHQ association with the SiNCs. The overall results were consistent with a Förster resonance energy transfer (FRET) mechanism where the polydispersity of the SiNCs had a significant impact on the observed ET: the choice of wavelength and timing parameters were important, and ensemble measurements represented an average of heterogeneous ET behaviors. Prospective advantages and disadvantages of SiNCs as ET donors are discussed. This study serves as a foundation for the continued and optimized development of ET configurations with SiNCs.
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Affiliation(s)
- Hsin-Yun Tsai
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1.
| | - Christopher Jay T Robidillo
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2G2
- Department of Physical Sciences and Mathematics, University of the Philippines Manila, P. Faura Street, Ermita, Manila 1000, Philippines
| | - Gunwant K Matharu
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2G2
| | - Kevin O'Connor
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2G2
| | - I Teng Cheong
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2G2
| | - Chuyi Ni
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2G2
| | - Jonathan G C Veinot
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2G2
| | - W Russ Algar
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1.
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9
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Anwar A, Mur M, Humar M. Microcavity- and Microlaser-Based Optical Barcoding: A Review of Encoding Techniques and Applications. ACS PHOTONICS 2023; 10:1202-1224. [PMID: 37215324 PMCID: PMC10197175 DOI: 10.1021/acsphotonics.2c01611] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Indexed: 05/24/2023]
Abstract
Optical microbarcodes have recently received a great deal of interest because of their suitability for a wide range of applications, such as multiplexed assays, cell tagging and tracking, anticounterfeiting, and product labeling. Spectral barcodes are especially promising because they are robust and have a simple readout. In addition, microcavity- and microlaser-based barcodes have very narrow spectra and therefore have the potential to generate millions of unique barcodes. This review begins with a discussion of the different types of barcodes and then focuses specifically on microcavity-based barcodes. While almost any kind of optical microcavity can be used for barcoding, currently whispering-gallery microcavities (in the form of spheres and disks), nanowire lasers, Fabry-Pérot lasers, random lasers, and distributed feedback lasers are the most frequently employed for this purpose. In microcavity-based barcodes, the information is encoded in various ways in the properties of the emitted light, most frequently in the spectrum. The barcode is dependent on the properties of the microcavity, such as the size, shape, and the gain materials. Various applications of these barcodes, including cell tracking, anticounterfeiting, and product labeling are described. Finally, the future prospects for microcavity- and microlaser-based barcodes are discussed.
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Affiliation(s)
- Abdur
Rehman Anwar
- Department
of Condensed Matter Physics, J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Maruša Mur
- Department
of Condensed Matter Physics, J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Matjaž Humar
- Department
of Condensed Matter Physics, J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- CENN
Nanocenter, Jamova 39, SI-1000 Ljubljana, Slovenia
- Faculty
of Mathematics and Physics, University of
Ljubljana, Jadranska
19, SI-1000 Ljubljana, Slovenia
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10
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Kuznetsov D, Krylsky D, Dezhurov S, Grachev A, Neschisliaev V, Orlova E, Kuznetsova A. Quantum dots are time bomb: Multiscale toxicological study. Chem Biol Interact 2023; 374:110396. [PMID: 36764372 DOI: 10.1016/j.cbi.2023.110396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023]
Abstract
The use of quantum dots has spread widely into many applications. Works on the study of quantum dots on living organisms have had conflicting results on toxicity. There are no full-scale long-term toxicological studies with multiple administration of quantum dots. Understanding the toxicity of quantum dots is still limited. Here we present data on the effects of quantum dots on animals. In this work for the first time, it is shown that at a single administration of quantum dots in the body they have moderate species-specific toxicity, but repeated administration of quantum dots for 14 days even in the amount of 0.5 mg/kg leads to a delayed not completely irreversible hematotoxic effect, delayed irreversible disorders of barrier function of the liver, irreversible nephrotoxic effect, and to pathological changes in the thymus, kidneys and spleen. Administration of quantum dots in the amount of 2.5 mg/kg for 14 days leads to irreversible changes in the lungs, liver, spleen, kidneys and thyroid gland. This phenomenon is based on immunological reactions. On the one hand, these data confirm that quantum dots at a single administration can show relatively low toxicity. On the other hand, they cause to a delayed irreversible organ and tissue damage when repeatedly administered to the body even in small quantities. This study demonstrates that quantum dots are not as low in toxicity as previously thought to be and pose a serious risk when entering living organisms. Detecting and treating poisoning using standard methods of diagnosis and treatment of heavy metal poisoning may not be effective. This study demonstrates that toxic effects of quantum dots on a living body are quite complex and cannot be generalized based on previously reported assumptions.
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Affiliation(s)
- Denis Kuznetsov
- G.N. Gabrichevsky Scientific and Research Institute of Epidemiology and Microbiology, 10, Admirala Makarova str., Moscow, 125212, Russia.
| | - Dmitriy Krylsky
- Research Institute of Applied Acoustics, Center of High Technologies, 7A, 9 Maya, Dubna, 141980, Russia
| | - Sergey Dezhurov
- Research Institute of Applied Acoustics, Center of High Technologies, 7A, 9 Maya, Dubna, 141980, Russia
| | - Alexei Grachev
- Institute of Carcinogenesis, Cancer Research Center of N.N. Blokhin, Kashirskoe sh. 24, Moscow, 115478, Russia
| | | | - Ekaterina Orlova
- Perm State Pharmaceutical Academy, Polevaya str. 2, 614000, Perm, Russia
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11
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Kurilov AD, Chausov DN, Osipova VV, Sagdeev DO, Chekulaev IS, Kucherov RN, Belyaev VV, Galyametdinov YG. Concentration-dependent dielectric and electro-optical properties of composites based on nematic liquid crystals and CdS:Mn quantum dots. SOFT MATTER 2023; 19:2110-2119. [PMID: 36857700 DOI: 10.1039/d2sm01352e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Composites in a wide concentration range of 0-0.6 wt% based on a nematic liquid crystal mixture and CdS quantum dots doped with manganese ions (Mn 6%) are presented. The effect of the CdS:Mn quantum dots on the phase diagram and electronic structure of composites was studied using differential scanning calorimetry and fluorescence analysis. Nonmonotonic concentration-dependent changes in the clearing point, which correlate with the fluorescence quenching behavior of the main CdS:Mn peak, were found. Dielectric spectroscopy and electro-optic studies revealed a corresponding increase in the dielectric permittivity anisotropy and birefringence in the 0.2-0.4 wt% range, where thermodynamic changes occur. The initiating factors behind this effect are supposed to be the self-assembly of quantum dots, and the distortion of the orientation order of liquid crystal molecules at a higher mass concentration of quantum dots.
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Affiliation(s)
- Alexander D Kurilov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St, Moscow, 119991, Russia.
- Moscow Region State University, 24 Very Voloshinoy St., 141014, Mytishchi, Russia
| | - Denis N Chausov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St, Moscow, 119991, Russia.
- Moscow University for Industry and Finance "Synergy", 2 Izmailovsky Val St., Moscow, 105318, Russia
| | - Valentina V Osipova
- Kazan National Research Technological University, 68 K. Marx St., 420015, Kazan, Russia
| | - Dmitriy O Sagdeev
- Kazan National Research Technological University, 68 K. Marx St., 420015, Kazan, Russia
| | - Igor S Chekulaev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St, Moscow, 119991, Russia.
- Moscow Region State University, 24 Very Voloshinoy St., 141014, Mytishchi, Russia
| | - Roman N Kucherov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St, Moscow, 119991, Russia.
- Moscow Region State University, 24 Very Voloshinoy St., 141014, Mytishchi, Russia
| | - Victor V Belyaev
- Moscow Region State University, 24 Very Voloshinoy St., 141014, Mytishchi, Russia
| | - Yuriy G Galyametdinov
- Kazan National Research Technological University, 68 K. Marx St., 420015, Kazan, Russia
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12
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Yao Y, Zhang T, Tang M. The DNA damage potential of quantum dots: Toxicity, mechanism and challenge. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 317:120676. [PMID: 36395913 DOI: 10.1016/j.envpol.2022.120676] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 10/30/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Quantum dots (QDs) are semiconductor nanoparticles (1-10 nm) with excellent optical and electrical properties. As QDs show great promise for applications in fields such as biomedicine, their biosafety is widely emphasized. Therefore, studies on the potential 'nanotoxicity' of QDs in genetic material are warranted. This review summarizes and discusses recent reports derived from different cell lines or animal models concerning the effects of QDs on genetic material. QDs could induce many types of genetic material damage, which subsequently triggers a series of cellular adverse outcomes, including apoptosis, cell cycle arrest and senescence. However, the individual biological and ecological significance of the genotoxicity of QDs is not yet clear. In terms of mechanisms of genotoxicity, QDs can damage DNA either through their own nanomorphology or through the released metal ions. It also includes the reactive oxygen species generation, inflammation and failure of DNA damage repair. Notably, apoptosis may lead to false positive results in genotoxicity tests. Finally, given the different uses of QDs and the interference of the physicochemical properties of QDs on the test method, genotoxicity testing of QDs should be different from traditional toxic compounds, which requires further research.
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Affiliation(s)
- Yongshuai Yao
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, 210009, People's Republic of China
| | - Ting Zhang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, 210009, People's Republic of China
| | - Meng Tang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, 210009, People's Republic of China.
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13
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Fluorescent Carbon Quantum Dots for Effective Tumor Diagnosis: A Comprehensive Review. BIOMEDICAL ENGINEERING ADVANCES 2023. [DOI: 10.1016/j.bea.2023.100072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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14
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Quantum Dots Mediated Imaging and Phototherapy in Cancer Spheroid Models: State of the Art and Perspectives. Pharmaceutics 2022; 14:pharmaceutics14102136. [PMID: 36297571 PMCID: PMC9611360 DOI: 10.3390/pharmaceutics14102136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/03/2022] [Accepted: 10/05/2022] [Indexed: 11/16/2022] Open
Abstract
Quantum Dots (QDs) are fluorescent nanoparticles known for their exceptional optical properties, i.e., high fluorescence emission, photostability, narrow emission spectrum, and broad excitation wavelength. These properties make QDs an exciting choice for bioimaging applications, notably in cancer imaging. Challenges lie in their ability to specifically label targeted cells. Numerous studies have been carried out with QDs coupled to various ligands like peptides, antibodies, aptamers, etc., to achieve efficient targeting. Most studies were conducted in vitro with two-dimensional cell monolayers (n = 8902) before evolving towards more sophisticated models. Three-dimensional multicellular tumor models better recapitulate in vivo conditions by mimicking cell-to-cell and cell-matrix interactions. To date, only few studies (n = 34) were conducted in 3D in vitro models such as spheroids, whereas these models could better represent QDs behavior in tumors compared to monolayers. Thus, the purpose of this review is to present a state of the art on the studies conducted with Quantum Dots on spheroid models for imaging and phototherapy purposes.
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15
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Liu N, Liang Y, Wei T, Zou L, Huang X, Kong L, Tang M, Zhang T. The role of ferroptosis mediated by NRF2/ERK-regulated ferritinophagy in CdTe QDs-induced inflammation in macrophage. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129043. [PMID: 35525219 DOI: 10.1016/j.jhazmat.2022.129043] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/11/2022] [Accepted: 04/27/2022] [Indexed: 06/14/2023]
Abstract
Cadmium telluride quantum dots (CdTe QDs) exist in the environment due to the abandonment of products. There is a potential risk to organisms and toxic mechanism is worth exploring. In this study, 12.5 μmol/Kg body weight CdTe QDs triggered systemic and local inflammatory response in mice and activated macrophages, then the mechanism of activating macrophages to overexpress IL-1β and IL-6 was explored. RAW264.7 macrophages were used, and after macrophages exposing to 1 μM CdTe QDs for 24 h, oxidative stress occurred. Further investigation found that CdTe QDs triggered ferroptosis in RAW264.7 cells. And deferoxamine mesylate alleviated the excessive lipid hydroperoxide caused by QDs. Mechanistically, CdTe QDs-provoked decrease of nuclear factor erythroid 2-related factor 2 (NRF2) elicited phosphorylation of extracellular regulated protein kinases1/2 (ERK1/2) and then activated ferritinophagy, which made ferritin heavy chain 1 (FTH1) degraded in lysosome and proteasome to release free iron ions to initiate ferroptosis in macrophages. This paper updates the mechanism of macrophage activation by CdTe QDs with regard to ferritinophagy, and more importantly, identifies the key role of NRF2 and ERK1/2. Our research extends the role of ferroptosis in inflammatory responses triggered by nanoparticles (NPs) in macrophages and provides insightful reference for toxicity assessment of NPs.
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Affiliation(s)
- Na Liu
- Key Laboratory of Environmental Medicine & Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, PR China
| | - Ying Liang
- Key Laboratory of Environmental Medicine & Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, PR China; Testing Center for Medical Device, Yancheng Institute of Measurement and Testing, Yancheng 224007, PR China
| | - Tingting Wei
- Key Laboratory of Environmental Medicine & Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, PR China
| | - Lingyue Zou
- Key Laboratory of Environmental Medicine & Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, PR China
| | - Xiaoquan Huang
- Key Laboratory of Environmental Medicine & Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, PR China
| | - Lu Kong
- Key Laboratory of Environmental Medicine & Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, PR China
| | - Meng Tang
- Key Laboratory of Environmental Medicine & Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, PR China.
| | - Ting Zhang
- Key Laboratory of Environmental Medicine & Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, PR China.
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Zhang Y, Lv Y, Li L, Zhao X, Zhao M, Shen H. Aminophosphate precursors for the synthesis of near-unity emitting InP quantum dots and their application in liver cancer diagnosis. EXPLORATION (BEIJING, CHINA) 2022; 2:20220082. [PMID: 37325608 PMCID: PMC10190939 DOI: 10.1002/exp.20220082] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
InP quantum dots (QDs) are a promising and environment-friendly alternative to Cd-based QDs for in vitro diagnostics and bioimaging applications. However, their poor fluorescence and stability severely limit their biological applications. Herein, we synthesize bright (∼100%) and stable InP-based core/shell QDs by using cost-effective and low-toxic phosphorus source, and then aqueous InP QDs are prepared with quantum yield over 80% by shell engineering. The immunoassay of alpha-fetoprotein can be detected in the widest analytical range of 1-1000 ng ml-1 and the limit of detection of 0.58 ng ml-1 by using those InP QDs-based fluorescent probes, making it the best-performing heavy metal-free detection reported so far, comparable to state-of-the-art Cd-QDs-based probes. Furthermore, the high-quality aqueous InP QDs exhibit excellent performance in specific labeling of liver cancer cells and in vivo tumor-targeted imaging of live mice. Overall, the present work demonstrates the great potential of novel high-quality Cd-free InP QDs in cancer diagnosis and image-guided surgery.
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Affiliation(s)
- Yanbin Zhang
- Key Laboratory of Natural Medicine and Immuno‐Engineering of Henan ProvinceHenan UniversityKaifengChina
| | - Yanbing Lv
- Key Laboratory for Special Functional Materials of Ministry of EducationSchool of Materials and EngineeringHenan UniversityKaifengChina
| | - Lin‐Song Li
- Key Laboratory of Natural Medicine and Immuno‐Engineering of Henan ProvinceHenan UniversityKaifengChina
| | - Xue‐Jie Zhao
- Key Laboratory of Natural Medicine and Immuno‐Engineering of Henan ProvinceHenan UniversityKaifengChina
| | - Mei‐Xia Zhao
- Key Laboratory of Natural Medicine and Immuno‐Engineering of Henan ProvinceHenan UniversityKaifengChina
| | - Huaibin Shen
- Key Laboratory for Special Functional Materials of Ministry of EducationSchool of Materials and EngineeringHenan UniversityKaifengChina
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Kunachowicz D, Ściskalska M, Jakubek M, Kizek R, Kepinska M. Structural changes in selected human proteins induced by exposure to quantum dots, their biological relevance and possible biomedical applications. NANOIMPACT 2022; 26:100405. [PMID: 35560289 DOI: 10.1016/j.impact.2022.100405] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/05/2022] [Accepted: 04/27/2022] [Indexed: 06/15/2023]
Abstract
Quantum dots (QDs) are semi-conductor luminescent nanocrystals usually of 2-10 nm diameter, attracting the significant attention in biomedical studies since emerged. Due to their unique optical and electronic properties, i.e. wide absorption spectra, narrow tunable emission bands or stable, bright photoluminescence, QDs seem to be ideally suited for multi-colour, simultaneous bioimaging and cellular labeling at the molecular level as new-generation probes. A highly reactive surface of QDs allows for conjugating them to biomolecules, what enables their direct binding to areas of interest inside or outside the cell for biosensing or targeted delivery. Particularly protein-QDs conjugates are current subjects of research, as features of QDs can be combined with protein specific functionalities and therefore used as a complex in variety of biomedical applications. It is known that QDs are able to interact with cells, organelles and macromolecules of the human body after administration. QDs are reported to cause changes at proteins level, including unfolding and three-dimensional structure alterations which might hamper proteins from performing their physiological functions and thereby limit the use of QD-protein conjugates in vivo. Moreover, these changes may trigger unwanted cellular outcomes as the effect of different signaling pathways activation. In this review, characteristics of QDs interactions with certain human proteins are presented and discussed. Besides that, the following manuscript provides an overview on structural changes of specific proteins exposed to QDs and their biological and biomedical relevance.
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Affiliation(s)
- Dominika Kunachowicz
- Department of Pharmaceutical Biochemistry, Division of Biomedical and Environmental Sciences, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wrocław, Poland
| | - Milena Ściskalska
- Department of Pharmaceutical Biochemistry, Division of Biomedical and Environmental Sciences, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wrocław, Poland
| | - Milan Jakubek
- BIOCEV, First Faculty of Medicine, Charles University, 252 50 Vestec, Czech Republic
| | - Rene Kizek
- BIOCEV, First Faculty of Medicine, Charles University, 252 50 Vestec, Czech Republic
| | - Marta Kepinska
- Department of Pharmaceutical Biochemistry, Division of Biomedical and Environmental Sciences, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wrocław, Poland.
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18
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A Transcriptomic Analysis of T98G Human Glioblastoma Cells after Exposure to Cadmium-Selenium Quantum Dots Mainly Reveals Alterations in Neuroinflammation Processes and Hypothalamus Regulation. Int J Mol Sci 2022; 23:ijms23042267. [PMID: 35216387 PMCID: PMC8877384 DOI: 10.3390/ijms23042267] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 01/04/2023] Open
Abstract
Quantum dots are nanoparticles with very promising biomedical applications. However, before these applications can be authorized, a complete toxicological assessment of quantum dots toxicity is needed. This work studied the effects of cadmium-selenium quantum dots on the transcriptome of T98G human glioblastoma cells. It was found that 72-h exposure to 40 µg/mL (a dose that reduces cell viability by less than 10%) alters the transcriptome of these cells in biological processes and molecular pathways, which address mainly neuroinflammation and hormonal control of hypothalamus via the gonadotropin-releasing hormone receptor. The biological significance of neuroinflammation alterations is still to be determined because, unlike studies performed with other nanomaterials, the expression of the genes encoding pro-inflammatory interleukins is down-regulated rather than up-regulated. The hormonal control alterations of the hypothalamus pose a new concern about a potential adverse effect of quantum dots on fertility. In any case, more studies are needed to clarify the biological relevance of these findings, and especially to assess the real risk of toxicity derived from quantum dots exposure appearing in physiologically relevant scenarios.
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Vyshnava SS, Pandluru G, Kumar KD, Panjala SP, Paramasivam K, Banapuram S, Anupalli RR, Dowlatabad MR. Biocompatible Ni-doped CdSe/ZnS semiconductor nanocrystals for cellular imaging and sorting. LUMINESCENCE 2022; 37:490-499. [PMID: 35048508 DOI: 10.1002/bio.4199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/23/2021] [Accepted: 01/13/2022] [Indexed: 11/05/2022]
Abstract
Quantum dots with chemical composition QD CdSe / ZnS _ Ni 650 are successfully synthesized by the hydrothermal method using chemical precipitation. Nanocrystalline phase of nanostructures are isolated and characterized using XRD. The mean crystalline size was 9.0±2.0 nm with core/shell Ni-dopant of the Quantum dot diameter. The ferromagnetic data reveal the magnetic behavior of QD CdSe / ZnS _ Ni 650 . The optical absorption measurement of these QDs in the UV-vis range 200-800 nm band gap value of 2.11 eV for QD CdSe / ZnS _ Ni 650 . This means that pure QD CdSe 650 and QD CdSe / ZnS _ Ni 650 have a redshift of when compared to bulk CdSe. These QD CdSe / ZnS _ Ni 650 where successfully uptake by the cell lines include HELA and MCF-7 for bioimaging and sorting applications.
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Affiliation(s)
| | - Gayathri Pandluru
- Department of Biotechnology, Sri Krishnadevaraya University, Anantapuramu, A. P, India
| | - Kanderi Dileep Kumar
- Department of Microbiology, Sri Krishnadevaraya University, Anantapuramu, A. P, India
| | - Shiva Prasad Panjala
- Department of Genetics and Biotechnology, Osmania University, Hyderabad, T. S, India
| | | | - Swathi Banapuram
- Department of Genetics and Biotechnology, Osmania University, Hyderabad, T. S, India
| | - Roja Rani Anupalli
- Department of Genetics and Biotechnology, Osmania University, Hyderabad, T. S, India
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Applications of hybridization chain reaction optical detection incorporating nanomaterials: A review. Anal Chim Acta 2022; 1190:338930. [PMID: 34857127 DOI: 10.1016/j.aca.2021.338930] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 12/13/2022]
Abstract
The development of powerful, simple and cost-effective signal amplifiers has significant implications for biological research and analysis. Hybridization chain reaction (HCR) has attracted increasing attention because of its enzyme-free, simple, and efficient amplification. In the HCR process, an initiator probe triggered a pair of metastable hairpins through a cross-opening process to propagate a chain reaction of hybridization events, yielding a long-nicked double-stranded nucleic acid structure. To achieve more noticeable signal amplification, nanomaterials, including graphene oxide, quantum dots, gold, silver, magnetic, and other nanoparticles, were integrated with HCR. Various types of colorimetric, fluorescence, plasmonic analyses or chemiluminescence optical sensing strategies incorporating nanomaterials have been developed to analyze various targets, such as nucleic acids, small biomolecules, proteins, and metal ions. This review summarized the recent advances of HCR technology pairing diverse nanomaterials in optical detection and discussed their challenges.
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21
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Canisares FS, Mutti AM, Cavalcante DG, Job AE, Pires AM, Lima SA. Luminescence and cytotoxic study of red emissive europium(III) complex as a cell dye. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113552] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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22
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Moradi M, Molaei R, Kousheh SA, T Guimarães J, McClements DJ. Carbon dots synthesized from microorganisms and food by-products: active and smart food packaging applications. Crit Rev Food Sci Nutr 2021; 63:1943-1959. [PMID: 34898337 DOI: 10.1080/10408398.2021.2015283] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Nanotechnology is rapidly becoming a commercial reality for application in food packaging. In particular, the incorporation of nanoparticles into packaging materials is being used to increase the shelf life and safety of foods. Carbon dots (C-dots) have a diverse range of potential applications in food packaging. They can be synthesized from environmentally friendly sources such as microorganisms, food by-products, and waste streams, or they may be generated in foods during normal processing operations, such as cooking. These processes often produce nitrogen- and sulfur-rich heteroatom-doped C-dots, which are beneficial for certain applications. The incorporation of C-dots into food packaging materials can improve their mechanical, barrier, and preservative properties. Indeed, C-dots have been used as antioxidant, antimicrobial, photoluminescent, and UV-light blocker additives in food packaging materials to reduce the chemical deterioration and inhibit the growth of pathogenic and spoilage microorganisms in foods. This article reviews recent progress on the synthesis of C-dots from microorganisms and food by-products of animal origin. It then highlights their potential application for the development of active and intelligent food packaging materials. Finally, a discussion of current challenges and future trends is given.
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Affiliation(s)
- Mehran Moradi
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Rahim Molaei
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Seyedeh Alaleh Kousheh
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Jonas T Guimarães
- Department of Food Technology, Faculty of Veterinary Medicine, Federal Fluminense University (UFF), Niterói, Rio de Janeiro, Brazil
| | - David Julian McClements
- Department of Food Science, University of Massachusetts Amherst, Amherst, Massachusetts, USA
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Sonia, Komal, Kukreti S, Kaushik M. Gold nanoclusters: An ultrasmall platform for multifaceted applications. Talanta 2021; 234:122623. [PMID: 34364432 DOI: 10.1016/j.talanta.2021.122623] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 01/22/2023]
Abstract
Gold nanoclusters (Au NCs) with a core size below 2 nm form an exciting class of functional nano-materials with characteristic physical and chemical properties. The properties of Au NCs are more prominent and extremely different from their bulk counterparts. The synthesis of Au NCs is generally assisted by template or ligand, which impart excellent cluster stability and high quantum yield. The tunable and sensitive physicochemical properties of Au NCs open horizons for their advanced applications in various interdisciplinary fields. In this review, we briefly summarize the solution phase synthesis and origin of the characteristic properties of Au NCs. A vast review of recent research work introducing biosensors based on Au NCs has been presented along with their specifications and detection limits. This review also highlights recent progress in the use of Au NCs as bio-imaging probe, enzyme mimic, temperature sensing probe and catalysts. A speculation on present challenges and certain future prospects have also been provided to enlighten the path for advancement of multifaceted applications of Au NCs.
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Affiliation(s)
- Sonia
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Komal
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Shrikant Kukreti
- Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Mahima Kaushik
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India.
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Zhang B, Luo Y, Mai C, Mu L, Li M, Wang J, Xu W, Peng J. Effects of ZnMgO Electron Transport Layer on the Performance of InP-Based Inverted Quantum Dot Light-Emitting Diodes. NANOMATERIALS 2021; 11:nano11051246. [PMID: 34065118 PMCID: PMC8151885 DOI: 10.3390/nano11051246] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/30/2021] [Accepted: 05/05/2021] [Indexed: 01/11/2023]
Abstract
An environment-friendly inverted indium phosphide red quantum dot light-emitting diode (InP QLED) was fabricated using Mg-doped zinc oxide (ZnMgO) as the electron transport layer (ETL). The effects of ZnMgO ETL on the performance of InP QLED were investigated. X-ray diffraction (XRD) analysis indicated that ZnMgO film has an amorphous structure, which is similar to zinc oxide (ZnO) film. Comparison of morphology between ZnO film and ZnMgO film demonstrated that Mg-doped ZnO film remains a high-quality surface (root mean square roughness: 0.86 nm) as smooth as ZnO film. The optical band gap and ultraviolet photoelectron spectroscopy (UPS) analysis revealed that the conduction band of ZnO shifts to a more matched position with InP quantum dot after Mg-doping, resulting in the decrease in turn-on voltage from 2.51 to 2.32 V. In addition, the ratio of irradiation recombination of QLED increases from 7% to 25% using ZnMgO ETL, which can be attributed to reduction in trap state by introducing Mg ions into ZnO lattices. As a result, ZnMgO is a promising material to enhance the performance of inverted InP QLED. This work suggests that ZnMgO has the potential to improve the performance of QLED, which consists of the ITO/ETL/InP QDs/TCTA/MoO3/Al, and Mg-doping strategy is an efficient route to directionally regulate ZnO conduction bands.
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Cao Y. Introduction to special issue endothelial cells in toxicology: Current status and future perspectives. J Appl Toxicol 2021; 41:656-658. [PMID: 33686682 DOI: 10.1002/jat.4163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/01/2021] [Accepted: 03/01/2021] [Indexed: 11/10/2022]
Affiliation(s)
- Yi Cao
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang, China
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