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Reena VN, Bhagyasree GS, Shilpa T, Aswati Nair R, Nithyaja B. Multifaceted Applications of DNA-Capped Silver Nanoparticles in Photonics, Photocatalysis, Antibacterial Activity, Cytotoxicity, and Bioimaging. J Fluoresc 2024:10.1007/s10895-023-03556-x. [PMID: 38381236 DOI: 10.1007/s10895-023-03556-x] [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: 11/10/2023] [Accepted: 12/13/2023] [Indexed: 02/22/2024]
Abstract
Deoxyribonucleic acid (DNA) capped silver nanoparticles are exceptional nanomaterials, featuring precise size and shape control enabled by DNA as a capping agent. DNA stabilizes these nanoparticles' role leading to uniform structures for diverse applications. These nanoparticles are excellent in photonics and medical applications, enhancing fluorescence and medical imaging. In this study, we explore the multifaceted applications of DNA-capped silver nanoparticles, delving into their optical, photocatalytic, antibacterial, cytotoxic, and bioimaging properties. Employing UV-visible absorption spectroscopy and scanning electron microscopy, we provide an analysis of confirmation of silver nanoparticles. The investigation demonstrates substantial photocatalytic efficacy, photodegradation of methylene blue is higher than rhodamine 6G. The presence of silver nanoparticles enhances the fluorescence of rhodamine 6G doped sol-gel glasses. Furthermore, our findings illustrate significant antibacterial effects, encompassing both Gram-positive and Gram-negative bacteria, with DNA-capped silver nanoparticles exhibiting antibacterial activity. Cytotoxicity assessments on HeLa cells reveal concentration-dependent effects, with an LC50 value of 47 µL. Additionally, the in vitro experiments with HeLa cells suggest the promising utility of DNA-capped silver nanoparticles for bioimaging applications. This comprehensive analysis highlights the multifunctionality and potential of DNA-capped silver nanoparticles, offering promising avenues for further exploration and innovation within various scientific domains, particularly in the realm of nanomaterial research.
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Affiliation(s)
- V N Reena
- Photonic Materials Research Laboratory, Department of Physics, Government College Madappally, Vadakara, Kozhikode, 673102, India.
- University of Calicut, Kozhikode, 673635, India.
- Department of Physics, Government Arts and Science College Calicut, Kozhikode, 673018, India.
| | - G S Bhagyasree
- Photonic Materials Research Laboratory, Department of Physics, Government College Madappally, Vadakara, Kozhikode, 673102, India
- University of Calicut, Kozhikode, 673635, India
| | - T Shilpa
- Department of Biochemistry and Molecular Biology, Central University of Kerala, Kasaragod, 671316, India
| | - R Aswati Nair
- Department of Biochemistry and Molecular Biology, Central University of Kerala, Kasaragod, 671316, India
| | - B Nithyaja
- Photonic Materials Research Laboratory, Department of Physics, Government College Madappally, Vadakara, Kozhikode, 673102, India
- University of Calicut, Kozhikode, 673635, India
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2
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Sunitha N, Isac Sobana Raj C, Sindhu Kumari B. Development of nanofunctionalized oxovanadium(IV) complex and its anticancer, antidiabetic, DNA cleavage and cell imaging studies. Int J Pharm 2023; 644:123339. [PMID: 37611853 DOI: 10.1016/j.ijpharm.2023.123339] [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] [Received: 05/05/2023] [Revised: 08/17/2023] [Accepted: 08/19/2023] [Indexed: 08/25/2023]
Abstract
VO(IV) complex is little toxic and highly effective than vanadium salts. A vanadyl metal complex from 8-formyl-7-hydroxy-4-methyl coumarin derivative has been synthesized and functionalized with copper nanoparticles. The Spectrochemical studies such as UV, FTIR, 1NMR and ESR spectra were recorded to characterize the ligand(CUAP), Vanadyl complex[VO(CUAP)SO4] and nano Cu-VO(IV)complex efficiently. The structural studies of vanadyl complex confirmed that the ligand coordinate with metal through nitrogen atom of azomethine, carbonyl oxygen and phenolic oxygen. ESR spectrum of vanadyl complex revealed the covalent nature. XRD pattern of nano Cu-VO(IV) complex indicated the crystalline nature and the average particle size was 20.91 nm. SEM image of nano Cu-VO(IV) complex showed that the nano particles accumulated to form spherical shaped particles. The particle size obtained from Transmission Electron Microscopy of nano functionalized metal complex is ∼ 20 nm. It is closely matched to the particle size calculated from XRD results. Fluorescence of vanadyl complex and nano Cu-VO(IV) complex exhibit the emission from 270 to 900 nm range with significant fluorescence at ∼ 750 nm. The DNA cleavage of all the compounds was evaluated using Agarose gel electrophoresis technique and showed greater cleavage of vanadyl complex. The anticancer activity of compounds was carried out against two cancer cell lines viz Human Breast Cancer Cell line (MCF-7) and Human Leukemia Cancer Cell Line(K-562). Oxovanadium complex exhibited good anticancer activities than ligand and nano-functionalized complex. The antidiabetic activities of vanadyl and nano functionalized complexes were studied against α-Amylase and β-Glucosidase inhibition assay. In this study vanadyl complex showed higher inhibition activity on α-Amylase compared with standard Acarbose. The bioimaging of nano-functionalized metal complex showed high fluorescent properties. The molecular docking study of ligand and vanadyl complex showed greater docking results with CDK2 receptor.
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Affiliation(s)
- N Sunitha
- Department of Chemistry & Research Centre, Nesamony Memorial Christian College, Marthandam 629157, (Affiliated to Manonmaniam Sundaranar University, Tirunelveli), India
| | - C Isac Sobana Raj
- Department of Chemistry & Research Centre, Nesamony Memorial Christian College, Marthandam 629157, (Affiliated to Manonmaniam Sundaranar University, Tirunelveli), India
| | - B Sindhu Kumari
- Department of Chemistry, Sree Devi Kumari Women's College, Kuzhithurai 629163, (Affiliated to Manonmaniam Sundaranar University, Tirunelveli), India.
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3
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Chau PBK, Vu TH, Kim MI. Highly Efficient Fluorescent Detection of Vitamin B 12 Based on the Inner Filter Effect of Dithiol-Functionalized Silver Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2444. [PMID: 37686952 PMCID: PMC10490474 DOI: 10.3390/nano13172444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/23/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023]
Abstract
We report a fluorescent assay for the determination of vitamin B12 (VB12) based on the inner filter effect (IFE) of 1,3-propanedithiol-functionalized silver nanoparticles (PDT-AgNPs). PDT was simply functionalized on the surface of AgNPs through Ag-thiol interaction, which leads to significantly enhanced fluorescence, with excitation and emission at 360 and 410 nm, respectively, via their thiol-mediated aggregation. Since target VB12 has strong absorption centered at 360 nm, which is almost completely overlapping with the excitation spectra of PDT-AgNPs, the VB12 induced strong quenching of the fluorescence of PDT-AgNPs via IFE. The IFE-based mechanism for the fluorescence quenching of PDT-AgNPs in the presence of VB12 was confirmed by the analyses of Stern-Volmer plots at different temperatures and fluorescence decay curves. The fluorescence-quenching efficiency of PDT-AgNPs was linearly proportional to the concentration of VB12 in a wide range of 1 to 50 μM, with a lower detection limit of 0.5 μM, while preserving excellent selectivity toward target VB12 among possible interfering molecules. Furthermore, the PDT-AgNPs-mediated assay succeeded in quantitatively detecting VB12 in drug tablets, indicating that PDT-AgNPs can serve as an IFE-based fluorescent probe in pharmaceutical preparations by taking advantages of its ease of use, rapidity, and affordability.
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Affiliation(s)
| | | | - Moon Il Kim
- Department of BioNano Technology, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea; (P.B.K.C.); (T.H.V.)
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Pervaiz S, Bibi I, Rehman W, Alotaibi HF, Obaidullah AJ, Rasheed L, M Alanazi M. Controlled Size Oils Based Green Fabrication of Silver Nanoparticles for Photocatalytic and Antimicrobial Application. Antibiotics (Basel) 2023; 12:1090. [PMID: 37508186 PMCID: PMC10376193 DOI: 10.3390/antibiotics12071090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/13/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
The particle size at the nanometric level allows the manifestation of remarkable properties, chiefly due to changes in surface-to-volume ratio. This study is attributed to the novel green synthesis of nano silver by using essential oils as a capping and reducing agent. Clove oil, cinnamon oil, and cardamom oil were selected for the eco-friendly and low-cost fabrication of silver nanoparticles. The prepared nanoparticles were characterized by photoluminescence spectroscopy, FT-IR spectroscopy, X-Ray diffraction, energy dispersive X-ray spectroscopy, dynamic laser light scattering, thermogravimetric analysis, and transmission electron microscopy. It was found that samples prepared by using cinnamon oil (20 nm) and cardamom oil (12 nm) had smaller particle sizes as compared to those synthesized by using clove oil (45 nm). All the prepared samples exhibited very strong antimicrobial activities with a clear zone of inhibition (6-24 mm) against Staphylococcus aureus, Klebsiella pneumoniae, and Candida albicans. Very resilient photocatalytic activities of the samples were observed against Allura red and fast green dyes. It was concluded that the cinnamon oil-based system is the best size reducer and size homogenizer (less chances of agglomeration) as compared to clove oil and cardamom oil (more chances of agglomeration) for the synthesis of silver nanoparticles.
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Affiliation(s)
- Seemab Pervaiz
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
- Department of Conservation Studies, Hazara University, Mansehra 21120, Pakistan
| | - Iram Bibi
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
| | - Wajid Rehman
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
| | - Hadil Faris Alotaibi
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Ahmad J Obaidullah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Liaqat Rasheed
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
| | - Mohammed M Alanazi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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Molkenova A, Choi HE, Park JM, Lee JH, Kim KS. Plasmon Modulated Upconversion Biosensors. BIOSENSORS 2023; 13:306. [PMID: 36979518 PMCID: PMC10046391 DOI: 10.3390/bios13030306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Over the past two decades, lanthanide-based upconversion nanoparticles (UCNPs) have been fascinating scientists due to their ability to offer unprecedented prospects to upconvert tissue-penetrating near-infrared light into color-tailorable optical illumination inside biological matter. In particular, luminescent behavior UCNPs have been widely utilized for background-free biorecognition and biosensing. Currently, a paramount challenge exists on how to maximize NIR light harvesting and upconversion efficiencies for achieving faster response and better sensitivity without damaging the biological tissue upon laser assisted photoactivation. In this review, we offer the reader an overview of the recent updates about exciting achievements and challenges in the development of plasmon-modulated upconversion nanoformulations for biosensing application.
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Affiliation(s)
- Anara Molkenova
- Institute of Advanced Organic Materials, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Hye Eun Choi
- School of Chemical Engineering, College of Engineering, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Jeong Min Park
- School of Chemical Engineering, College of Engineering, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Jin-Ho Lee
- School of Biomedical Convergence Engineering, Pusan National University, 49 Busandaehak-ro, Yangsan 50612, Republic of Korea
| | - Ki Su Kim
- Institute of Advanced Organic Materials, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
- School of Chemical Engineering, College of Engineering, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
- Department of Organic Material Science & Engineering, Pusan National University, 2 Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
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Pete AM, Ingle PU, Raut RW, Shende SS, Rai M, Minkina TM, Rajput VD, Kalinitchenko VP, Gade AK. Biogenic Synthesis of Fluorescent Carbon Dots (CDs) and Their Application in Bioimaging of Agricultural Crops. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:209. [PMID: 36616122 PMCID: PMC9824522 DOI: 10.3390/nano13010209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 12/28/2022] [Accepted: 12/28/2022] [Indexed: 05/11/2023]
Abstract
Fluorescent nanoparticles have a transformative potential for advanced sensors and devices for point-of-need diagnostics and bioimaging, bypassing the technical burden of meeting the assay performance requirements. Carbon dots (CDs) are rapidly emerging carbon-based nanomaterials. Regardless of their fate, they will find increasing applications. In this study, a simple approach for synthesizing CDs from fruit peels was developed. The CDs were fabricated from Annona squamosa (L.) peels using a carbonization technique through microwave-assisted hydrothermal digestion at temperatures around 200 °C. Synthesized CDs were detected using a UV transilluminator for the preliminary confirmation of the presence of fluorescence. UV-Vis spectrophotometry (absorbance at 505 nm) analysis, zeta potential measurement (-20.8 mV), nanoparticles tracking analysis (NTA) (average size: 15.4 nm and mode size: 9.26 nm), photoluminescence, and Fourier transform infrared (FT-IR) analysis were used to identify the capping functional groups on the CDs. The total quantum yield exhibited was 8.93%, and the field emission scanning electron microscopy (FESEM) showed the size range up to 40 nm. The germinating mung bean (Vigna radiata (L.)) seeds were incubated with biogenically synthesized CDs to check the absorption of CDs by them. The fluorescence was observed under a UV-transilluminator in the growing parts of seeds, indicating the absorption of CDs during the germination, development, and growth. These fluorescent CDs could be used as a bioimaging agent. This novel method of synthesizing CDs was found to be eco-friendly, rapid, and cost-effective.
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Affiliation(s)
- Akshay M. Pete
- Nanobiotechnology Laboratory, Department of Biotechnology, Sant Gadge Baba Amravati University, Amravati 444602, Maharashtra, India
| | - Pramod U. Ingle
- Nanobiotechnology Laboratory, Department of Biotechnology, Sant Gadge Baba Amravati University, Amravati 444602, Maharashtra, India
| | - Rajesh W. Raut
- Department of Botany, The Institute of Science, 15, Madame Cama Road, Mumbai 400032, Maharashtra, India
| | - Sudhir S. Shende
- Nanobiotechnology Laboratory, Department of Biotechnology, Sant Gadge Baba Amravati University, Amravati 444602, Maharashtra, India
- Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia
| | - Mahendra Rai
- Nanobiotechnology Laboratory, Department of Biotechnology, Sant Gadge Baba Amravati University, Amravati 444602, Maharashtra, India
- Department of Microbiology, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Tatiana M. Minkina
- Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia
| | - Vishnu D. Rajput
- Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia
| | | | - Aniket K. Gade
- Nanobiotechnology Laboratory, Department of Biotechnology, Sant Gadge Baba Amravati University, Amravati 444602, Maharashtra, India
- Department of Biological Sciences and Biotechnology, Institute of Chemical Technology, Mumbai 400019, Maharashtra, India
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7
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Railean V, Buszewski B. Flow Cytometry - Sophisticated Tool for Basic Research or/and Routine Diagnosis; Impact of the Complementarity in Both Pre- as Well as Clinical Studies. Crit Rev Anal Chem 2022:1-23. [PMID: 36576036 DOI: 10.1080/10408347.2022.2154596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Flow cytometry is a sophisticated technology used widely in both basic research and as a routine tool in clinical diagnosis. The technology has progressed from single parameter detection in the 1970s and 1980s to high end multicolor analysis, with currently 30 parameters detected simultaneously, allowing the identification and purification of rare subpopulations of cells of interest. Flow cytometry continues to evolve and expand to facilitate the investigation of new diagnostic and therapeutic avenues. The present review gives an overview of basic theory and instrumentation, presents and compares the advantages and disadvantages of conventional, spectral and imaging flow cytometry as well as mass cytometry. Current methodologies and applications in both research, pre- and clinical settings are discussed, as well as potential limitations and future evolution. This finding encourages the reader to promote such relationship between basic science, diagnosis and multidisciplinary approach since the standard methods have limitations (e.g., in differentiating the cells after staining). Moreover, such path inspires future cytometry specialists develop new/alternative frontiers between pre- and clinical diagnosis and be more flexible in designing the study for both human as well as veterinary medicine.
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Affiliation(s)
- Viorica Railean
- Department of Infectious, Invasive Diseases and Veterinary Administration, Institute of Veterinary Medicine, Toruń, Poland
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Torun, Poland
| | - Bogusław Buszewski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Torun, Poland
- Department of Environmental Chemistry and Bioanalysis, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Toruń, Poland
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Z. Officinale-Doped Silver/Calcium Oxide Nanocomposites: Catalytic Activity and Antimicrobial Potential with Molecular Docking Analysis. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.07.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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9
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Svoboda L, Bednář J, Dvorský R, Panáček A, Hochvaldová L, Kvítek L, Malina T, Konvičková Z, Henych J, Němečková Z, Večeřová R, Kolář M, Matýsek D, Vilamová Z. Crucial cytotoxic and antimicrobial activity changes driven by amount of doped silver in biocompatible carbon nitride nanosheets. Colloids Surf B Biointerfaces 2021; 202:111680. [PMID: 33714189 DOI: 10.1016/j.colsurfb.2021.111680] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/08/2021] [Accepted: 03/05/2021] [Indexed: 11/28/2022]
Abstract
The use of Ag-modified nanomaterials continues to attract attention in biological contamination control, their potential cytotoxicity is often overlooked. Herein, biocompatible carbon nitride is modified with 1 and 5 wt.% Ag and effects of different nanomaterial dose and Ag content on antimicrobial activity and cytotoxicity is studied. Pure Ag nanoparticles and AgNO3 is tested for comparison, together with ten bacterial strains including pan-resistant Pseudomonas aeruginosa. Cytotoxicity is then investigated in three adherent and two suspension human cell lines, and results confirm that cancer adherent cell lines are the most immune lines and human cervical adenocarcinoma cells (HeLa) are more resilient than human lung adenocarcinoma cells (A549). The HeLa remains over 90 % viable even after 24 -h treatment with the highest concentration of 5%Ag/g-C3N4 (300 mg L-1) while A549 sustained viability only up to 100 mg L-1. Higher concentrations then induce cytotoxicity and A549 cell viability decreases. Our results show the importance of complementary testing of cytotoxicity by LIVE/DEAD assay using flow cytometry with more different human cell lines, which might be less immune to tested nanomaterials than HeLa and A549. Combined controls of new antibacterial agent activity tests then provide increased knowledge of their biocompatibility.
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Affiliation(s)
- Ladislav Svoboda
- Nanotechnology Centre, CEET, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic; IT4Innovations, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic.
| | - Jiří Bednář
- Nanotechnology Centre, CEET, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic; IT4Innovations, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic
| | - Richard Dvorský
- Nanotechnology Centre, CEET, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic; IT4Innovations, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic
| | - Aleš Panáček
- Department of Physical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc, 77146, Czech Republic
| | - Lucie Hochvaldová
- Department of Physical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc, 77146, Czech Republic
| | - Libor Kvítek
- Department of Physical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc, 77146, Czech Republic
| | - Tomáš Malina
- Department of Physical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc, 77146, Czech Republic; Regional Centre of Advanced Technologies and Materials, Palacký University, Šlechtitelů 27, Olomouc, 78 371, Czech Republic
| | - Zuzana Konvičková
- Nanotechnology Centre, CEET, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic; ENET Centre, CEET, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic
| | - Jiří Henych
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Husinec-Řež, 1001, 250 68, Řež, Czech Republic
| | - Zuzana Němečková
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Husinec-Řež, 1001, 250 68, Řež, Czech Republic
| | - Renata Večeřová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Milan Kolář
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Dalibor Matýsek
- Institute of Geological Engineering, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic
| | - Zuzana Vilamová
- Nanotechnology Centre, CEET, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, 708 00, Czech Republic
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Tan P, Li H, Wang J, Gopinath SCB. Silver nanoparticle in biosensor and bioimaging: Clinical perspectives. Biotechnol Appl Biochem 2020; 68:1236-1242. [PMID: 33043496 DOI: 10.1002/bab.2045] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 09/29/2020] [Indexed: 12/18/2022]
Abstract
Recent developments in nanotechnology promoted the production of nanomaterials with various shapes and sizes by utilizing interdisciplinary researches of biology, chemistry, and material science toward the clinical perspectives. In particular, gold and silver (Ag) are noble metals that exhibit tunable and unique plasmonic properties for the downstream applications. Ag exhibits higher thermal and electrical conductivities, and more efficient in the electron transfer than gold with sharper extinction bands. In addition, modified Ag nanoparticle is more stable in water and air. With all these above features, Ag is an attractive tool in various fields, including diagnosis, drug delivery, environmental, electronics, and as antimicrobial agent. In particular, applications of Ag nanoparticle in the fields of biosensor and imaging are prominent in recent days. Enhancing the specific detection of clinical markers with Ag nanoparticle has been proved by several studies. This review discussed the constructive application of Ag nanoparticle in biosensor and bioimaging for the detection of small molecule to larger whole cell in the perspectives of diagnosing diseases.
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Affiliation(s)
- Peng Tan
- Ultrasound Diagnosis Department, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang City, Jiangxi Province, People's Republic of China
| | - HeSheng Li
- General Surgery, Leping people's Hospital, Phoenix Avenue, Leping, Jiangxi Province, People's Republic of China
| | - Jian Wang
- Clinical Laboratory, Affiliated Hospital of Jiangxi University of traditional Chinese Medicine, Nanchang City, Jiangxi Province, People's Republic of China
| | - Subash C B Gopinath
- Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis, Arau, Perlis, 02600, Malaysia.,Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, Kangar, Perlis, 01000, Malaysia
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11
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Ullah K, Jan HA, Ahmad M, Ullah A. Synthesis and Structural Characterization of Biofuel From Cocklebur sp., Using Zinc Oxide Nano-Particle: A Novel Energy Crop for Bioenergy Industry. Front Bioeng Biotechnol 2020; 8:756. [PMID: 33014988 PMCID: PMC7498747 DOI: 10.3389/fbioe.2020.00756] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 06/12/2020] [Indexed: 12/02/2022] Open
Abstract
This study is reporting the biofuel synthesis and characterization from the novel non-edible feedstock cocklebur seeds oil. The Cocklebur crop seeds oil was studied as a potential source for biofuel production based on the chemical, structural and fuel properties analysis. The oil expression and FFAs content in cocklebur crop was reported 37.2% and 0.47 gram KOH/g, using soxhlet apparatus and acid base titration method, respectively. The maximum conversion and yield of the cocklebur crop seeds non-edible oil to biofuel was pursued 93.33%, using transesterification process. The optimum protocol for maximum conversion yield was adjusted: 1:7 oil-methanol molar ratios, ZnO nano-particle concentration 0.2 gm (w/w), reaction temperature 60°C, and reaction time 45 min, respectively. ZnO nano-particle was prepared by a modified sol-gel method, using gelatin and the particle was XRD, TEM, XPS, and UV-vis spectroscopies. Qualitatively, the cocklebur crop synthesized biofuel was quantified and structurally characterized by GC/MS, FT-IR, NMR, and AAS spectroscopies. Quantitatively, the fuel properties of cocklebur crop biofuel was analyzed and compared with the international ASTM and EN standards.
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Affiliation(s)
- Kifayat Ullah
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Hammad Ahmad Jan
- Biofuel & Biodiversity Lab, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Mushtaq Ahmad
- Biofuel & Biodiversity Lab, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Anwar Ullah
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
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12
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Evangelisti B, Fichthorn KA, van Duin ACT. Development and initial applications of an e-ReaxFF description of Ag nanoclusters. J Chem Phys 2020; 153:104106. [DOI: 10.1063/5.0018971] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Benjamin Evangelisti
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Kristen A. Fichthorn
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Adri C. T. van Duin
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Mechanical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
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13
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Ha MK, Kwon SJ, Choi JS, Nguyen NT, Song J, Lee Y, Kim YE, Shin I, Nam JW, Yoon TH. Mass Cytometry and Single-Cell RNA-seq Profiling of the Heterogeneity in Human Peripheral Blood Mononuclear Cells Interacting with Silver Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907674. [PMID: 32163679 DOI: 10.1002/smll.201907674] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 06/10/2023]
Abstract
Understanding the interactions between nanoparticles (NPs) and human immune cells is necessary for justifying their utilization in consumer products and biomedical applications. However, conventional assays may be insufficient in describing the complexity and heterogeneity of cell-NP interactions. Herein, mass cytometry and single-cell RNA-sequencing (scRNA-seq) are complementarily used to investigate the heterogeneous interactions between silver nanoparticles (AgNPs) and primary immune cells. Mass cytometry reveals the heterogeneous biodistribution of the positively charged polyethylenimine-coated AgNPs in various cell types and finds that monocytes and B cells have higher association with the AgNPs than other populations. scRNA-seq data of these two cell types demonstrate that each type has distinct responses to AgNP treatment: NRF2-mediated oxidative stress is confined to B cells, whereas monocytes show Fcγ-mediated phagocytosis. Besides the between-population heterogeneity, analysis of single-cell dose-response relationships further reveals within-population diversity for the B cells and naïve CD4+ T cells. Distinct subsets having different levels of cellular responses with respect to their cellular AgNP doses are found. This study demonstrates that the complementary use of mass cytometry and scRNA-seq is helpful for gaining in-depth knowledge on the heterogeneous interactions between immune cells and NPs and can be incorporated into future toxicity assessments of nanomaterials.
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Affiliation(s)
- My Kieu Ha
- Center for Next Generation Cytometry, Hanyang University, Seoul, 04763, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Sook Jin Kwon
- Center for Next Generation Cytometry, Hanyang University, Seoul, 04763, Republic of Korea
- Institute of Next Generation Material Design, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jang-Sik Choi
- Center for Next Generation Cytometry, Hanyang University, Seoul, 04763, Republic of Korea
- Institute of Next Generation Material Design, Hanyang University, Seoul, 04763, Republic of Korea
| | - Nguyen Thanh Nguyen
- Center for Next Generation Cytometry, Hanyang University, Seoul, 04763, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jaewoo Song
- Department of Laboratory Medicine, College of Medicine, Yonsei University, Seoul, 03722, Republic of Korea
| | - Yangsoon Lee
- Department of Laboratory Medicine, College of Medicine, Hanyang University, Seoul, 04763, Republic of Korea
| | - Young-Eun Kim
- Department of Laboratory Medicine, College of Medicine, Hanyang University, Seoul, 04763, Republic of Korea
| | - Incheol Shin
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jin-Wu Nam
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Tae Hyun Yoon
- Center for Next Generation Cytometry, Hanyang University, Seoul, 04763, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
- Institute of Next Generation Material Design, Hanyang University, Seoul, 04763, Republic of Korea
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14
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Extremely concentrated silver nanoparticles stabilized in aqueous solution by Bovine Serum Albumin (BSA). ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.100349] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Mabrouk M, Rajendran R, Soliman IE, Ashour MM, Beherei HH, Tohamy KM, Thomas S, Kalarikkal N, Arthanareeswaran G, Das DB. Nanoparticle- and Nanoporous-Membrane-Mediated Delivery of Therapeutics. Pharmaceutics 2019; 11:E294. [PMID: 31234394 PMCID: PMC6631283 DOI: 10.3390/pharmaceutics11060294] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 12/11/2022] Open
Abstract
Pharmaceutical particulates and membranes possess promising prospects for delivering drugs and bioactive molecules with the potential to improve drug delivery strategies like sustained and controlled release. For example, inorganic-based nanoparticles such as silica-, titanium-, zirconia-, calcium-, and carbon-based nanomaterials with dimensions smaller than 100 nm have been extensively developed for biomedical applications. Furthermore, inorganic nanoparticles possess magnetic, optical, and electrical properties, which make them suitable for various therapeutic applications including targeting, diagnosis, and drug delivery. Their properties may also be tuned by controlling different parameters, e.g., particle size, shape, surface functionalization, and interactions among them. In a similar fashion, membranes have several functions which are useful in sensing, sorting, imaging, separating, and releasing bioactive or drug molecules. Engineered membranes have been developed for their usage in controlled drug delivery devices. The latest advancement in the technology is therefore made possible to regulate the physico-chemical properties of the membrane pores, which enables the control of drug delivery. The current review aims to highlight the role of both pharmaceutical particulates and membranes over the last fifteen years based on their preparation method, size, shape, surface functionalization, and drug delivery potential.
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Affiliation(s)
- Mostafa Mabrouk
- Refractories, Ceramics and Building Materials Department, National Research Centre, 33 El Bohouth St (former EL Tahrirst)-Dokki, Giza 12622, Egypt.
| | - Rajakumari Rajendran
- International and Inter-University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala 686560, India.
| | - Islam E Soliman
- Biophysics Branch, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt.
| | | | - Hanan H Beherei
- Refractories, Ceramics and Building Materials Department, National Research Centre, 33 El Bohouth St (former EL Tahrirst)-Dokki, Giza 12622, Egypt.
| | - Khairy M Tohamy
- Biophysics Branch, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt.
| | - Sabu Thomas
- International and Inter-University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala 686560, India.
| | - Nandakumar Kalarikkal
- International and Inter-University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala 686560, India.
| | | | - Diganta B Das
- Department of Chemical Engineering, Loughborough University, Loughborough LE113TU, UK.
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16
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Zayed MF, Eisa WH, El-Kousy SM, Mleha WK, Kamal N. Ficus retusa-stabilized gold and silver nanoparticles: Controlled synthesis, spectroscopic characterization, and sensing properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:496-512. [PMID: 30812012 DOI: 10.1016/j.saa.2019.02.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 12/15/2018] [Accepted: 02/16/2019] [Indexed: 06/09/2023]
Abstract
Ficus retusa was used as reducing and stabilizing agent in the green synthesis of silver and gold nanoparticles with high dispersion stability and controllable size and shape. The controlling of reaction conditions i.e. contact time, extract quantity, metal concentration, and pH value enables the tuning of the particle size and size distribution of the metal nanoparticles. UV-visible spectroscopy was used to follow the spectral profile changes of the surface plasmon resonance of the metal nanoparticles due to different treatments. The surface plasmon resonance varies between 400 and 432 nm and between 522 and 554 nm for silver and gold nanoparticles, respectively, depending on the different reaction parameters. Atomic force and transmission electron microscopy results confirmed the success of preparation of spherical silver (15 nm) and gold (10-25 nm) nanoparticles with narrow size-distribution. Fourier transform infrared spectroscopy suggested the phenolic compounds play the key role in the reduction and stabilizing of metal ions. The colorimetric sensitivity of silver and gold nanoparticles to detect the presence of heavy metals in water was studied.
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Affiliation(s)
- Mervat F Zayed
- Chemistry Department, Faculty of Science, Menoufia University, Egypt.
| | - Wael H Eisa
- Spectroscopy Department, Physics Division, National Research Center (NRC), Egypt
| | - Salah M El-Kousy
- Chemistry Department, Faculty of Science, Menoufia University, Egypt
| | - Walaa K Mleha
- Chemistry Department, Faculty of Science, Menoufia University, Egypt
| | - Nermeen Kamal
- Chemistry Department, Faculty of Science, Menoufia University, Egypt
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17
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Liao C, Li Y, Tjong SC. Bactericidal and Cytotoxic Properties of Silver Nanoparticles. Int J Mol Sci 2019; 20:E449. [PMID: 30669621 PMCID: PMC6359645 DOI: 10.3390/ijms20020449] [Citation(s) in RCA: 410] [Impact Index Per Article: 82.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/14/2019] [Accepted: 01/17/2019] [Indexed: 12/16/2022] Open
Abstract
Silver nanoparticles (AgNPs) can be synthesized from a variety of techniques including physical, chemical and biological routes. They have been widely used as nanomaterials for manufacturing cosmetic and healthcare products, antimicrobial textiles, wound dressings, antitumor drug carriers, etc. due to their excellent antimicrobial properties. Accordingly, AgNPs have gained access into our daily life, and the inevitable human exposure to these nanoparticles has raised concerns about their potential hazards to the environment, health, and safety in recent years. From in vitro cell cultivation tests, AgNPs have been reported to be toxic to several human cell lines including human bronchial epithelial cells, human umbilical vein endothelial cells, red blood cells, human peripheral blood mononuclear cells, immortal human keratinocytes, liver cells, etc. AgNPs induce a dose-, size- and time-dependent cytotoxicity, particularly for those with sizes ≤10 nm. Furthermore, AgNPs can cross the brain blood barrier of mice through the circulation system on the basis of in vivo animal tests. AgNPs tend to accumulate in mice organs such as liver, spleen, kidney and brain following intravenous, intraperitoneal, and intratracheal routes of administration. In this respect, AgNPs are considered a double-edged sword that can eliminate microorganisms but induce cytotoxicity in mammalian cells. This article provides a state-of-the-art review on the synthesis of AgNPs, and their applications in antimicrobial textile fabrics, food packaging films, and wound dressings. Particular attention is paid to the bactericidal activity and cytotoxic effect in mammalian cells.
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Affiliation(s)
- Chengzhu Liao
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Yuchao Li
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Sie Chin Tjong
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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18
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Fedorenko SV, Grechkina SL, Mukhametshina AR, Solovieva AO, Pozmogova TN, Miroshnichenko SM, Alekseev AY, Shestopalov MA, Kholin KV, Nizameev IR, Mustafina AR. Silica nanoparticles with Tb(III)-centered luminescence decorated by Ag 0 as efficient cellular contrast agent with anticancer effect. J Inorg Biochem 2018; 182:170-176. [PMID: 29486416 DOI: 10.1016/j.jinorgbio.2018.02.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 01/16/2018] [Accepted: 02/04/2018] [Indexed: 12/15/2022]
Abstract
The present work introduces composite luminescent nanoparticles (Ag0-Tb3+-SNs), where ultra-small nanosilver (4 ± 2 nm) is deposited onto amino-modified silica nanoparticles (35±6 nm) doped by green luminescent Tb(III) complexes. Ag0-Tb3+-SNs are able to image cancer (Hep-2) cells in confocal microscopy measurements due to efficient cell internalization, which is confirmed by TEM images of the Hep-2 cells exposed by Ag0-Tb3+-SNs. Comparative analysis of the cytotoxicity of normal fibroblasts (DK-4) and cancer cells (Hep-2) incubated with various concentrations of Ag0-Tb3+-SNs revealed the concentration range where the toxic effect on the cancer cells is significant, while it is insignificant towards the nonmalignant fibroblasts cells. The obtained results reveal Ag0-Tb3+-SNs as good cellular contrast agent able to induce the cancer cells death, which makes them promising theranostic in cancer diagnostics and therapy.
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Affiliation(s)
- Svetlana V Fedorenko
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation.
| | - Svetlana L Grechkina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Alsu R Mukhametshina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Anastasiya O Solovieva
- Research Institute of Clinical and Experimental Lymphology - Branch of the ICG SB RAS, 2 Timakova srt., 630060 Novosibirsk, Russian Federation; Research Institute of Experimental and Clinical Medicine, 2 Timakova str., 630060 Novosibirsk, Russian Federation
| | - Tatiana N Pozmogova
- Research Institute of Clinical and Experimental Lymphology - Branch of the ICG SB RAS, 2 Timakova srt., 630060 Novosibirsk, Russian Federation
| | - Svetlana M Miroshnichenko
- Research Institute of Clinical and Experimental Lymphology - Branch of the ICG SB RAS, 2 Timakova srt., 630060 Novosibirsk, Russian Federation; Scientific Institute of Biochemistry, 2 Timakova st., 630060 Novosibirsk, Russian Federation
| | - Alexander Y Alekseev
- Research Institute of Experimental and Clinical Medicine, 2 Timakova str., 630060 Novosibirsk, Russian Federation
| | - Michael A Shestopalov
- Research Institute of Clinical and Experimental Lymphology - Branch of the ICG SB RAS, 2 Timakova srt., 630060 Novosibirsk, Russian Federation; Research Institute of Experimental and Clinical Medicine, 2 Timakova str., 630060 Novosibirsk, Russian Federation; Nikolaev Institute of Inorganic Chemistry SB RAS, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russian Federation
| | - Kirill V Kholin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Irek R Nizameev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Asiya R Mustafina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
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19
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Kjærvik M, Hermanns A, Dietrich P, Thissen A, Bahr S, Ritter B, Kemnitz E, Unger WES. Detection of suspended nanoparticles with near-ambient pressure x-ray photoelectron spectroscopy. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:474002. [PMID: 28891804 DOI: 10.1088/1361-648x/aa8b9d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two systems of suspended nanoparticles have been studied with near-ambient pressure x-ray photoelectron spectroscopy: silver nanoparticles in water and strontium fluoride-calcium fluoride core-shell nanoparticles in ethylene glycol. The corresponding dry samples were measured under ultra high vacuum for comparison. The results obtained under near-ambient pressure were overall comparable to those obtained under ultra high vacuum, although measuring silver nanoparticles in water requires a high pass energy and a long acquisition time. A shift towards higher binding energies was found for the silver nanoparticles in aqueous suspension compared to the corresponding dry sample, which can be assigned to a change of surface potential at the water-nanoparticle interface. The shell-thickness of the core-shell nanoparticles was estimated based on simulated spectra from the National Institute of Standards and Technology database for simulation of electron spectra for surface analysis. With the instrumental set-up presented in this paper, nanoparticle suspensions in a suitable container can be directly inserted into the analysis chamber and measured without prior sample preparation.
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Affiliation(s)
- Marit Kjærvik
- Division 6.1 Surface Analysis and Interfacial Chemistry, Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 44-46, 12203 Berlin, Germany
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20
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Ho-Wu R, Yau SH, Goodson T. Efficient Singlet Oxygen Generation in Metal Nanoclusters for Two-Photon Photodynamic Therapy Applications. J Phys Chem B 2017; 121:10073-10080. [PMID: 29016137 DOI: 10.1021/acs.jpcb.7b09442] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The generation of singlet oxygen (1O2) has been established as the principal mechanism of photodynamic therapy (PDT). Various dyes, metal nanoparticles, and clusters have been shown to sensitize 1O2. However, metal nanoclusters are even more promising candidates as photosensitizers for this purpose. By understanding the optical properties that lead to efficient 1O2 generation, one can fully realize their potential as PDT photosensitizers. Three different metal nanoclusters, Au25, Ag32, and Au144, are investigated for their 1O2 generation efficiency. The Au144 showed a 1O2 generation rate that is 2 orders of magnitude higher than that for Au25 and Ag32, and several orders of magnitude higher than nanoparticles (>5 nm) due to Au144's high absorption cross section-to-volume ratio. The effectiveness of PDT in live cells with nanoclusters was demonstrated by two-photon excitation compared to one-photon excitation. The implication of these results points toward new efficient two-photon 1O2 sensitizers for photodynamic therapy.
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Affiliation(s)
- Rosina Ho-Wu
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Sung Hei Yau
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Theodore Goodson
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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21
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Biswas P, Cho SR, Kim JW, Baek SD, Myoung JM. Improved UV response of ZnO nanotubes by resonant coupling of anchored plasmonic silver nanoparticles. NANOTECHNOLOGY 2017; 28:225502. [PMID: 28402290 DOI: 10.1088/1361-6528/aa6ce0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, plasmonic silver (Ag) nanoparticle-(NP) anchored ZnO nanorods (NRs) and nanotube-(NT) based UV photodetectors are demonstrated. Here, Ag NPs are synthesized and anchored by using a room-temperature photochemical method by exposing the precursor solution in UV radiation. In order to achieve a stronger surface plasmon resonance (SPR) and minimum agglomeration, the photochemical method is optimized with a precursor concentration of 5 mmol, a UV intensity of 0.4 mW · cm-2, and an exposure time of 30 min. An asymmetry around 380 nm in the absorption spectra of the NP solution indicates the presence of plasmonic resonance in that region. Upon anchoring the Ag NPs, ZnO NRs show enhanced band edge emission (380-400 nm) and the emission is further significantly increased in Ag NP-anchored ZnO NTs. The on/off ratio and photoresponse properties of the UV photodetectors are enhanced significantly after anchoring Ag NPs on the ZnO nanostructures. It is believed that the near-field coupling of SPR causes an optical enhancement of ZnO, whereas the bridging effect and hot-electron transfer to the conduction band of ZnO by plasmonic Ag NPs, anchored in close proximity, gives rise to a faster response of the photodetectors.
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Affiliation(s)
- Pranab Biswas
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
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22
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Ermakov VA, Jimenez-Villar E, Silva Filho JMCD, Yassitepe E, Mogili NVV, Iikawa F, de Sá GF, Cesar CL, Marques FC. Size Control of Silver-Core/Silica-Shell Nanoparticles Fabricated by Laser-Ablation-Assisted Chemical Reduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2257-2262. [PMID: 28186767 DOI: 10.1021/acs.langmuir.6b04308] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Aqueous colloidal silver nanoparticles have substantial potential in biological application as markers and antibacterial agents and in surface-enhanced Raman spectroscopy applications. A simple method of fabrication and encapsulation into an inert shell is of great importance today to make their use ubiquitous. Here we show that colloids of silver-core/silica-shell nanoparticles can be easily fabricated by a laser-ablation-assisted chemical reduction method and their sizes can be tuned in the range of 2.5 to 6.3 nm by simply choosing a proper water-ethanol proportion. The produced silver nanoparticles possess a porous amorphous silica shell that increases the inertness and stability of colloids, which decreases their toxicity compared with those without silica. The presence of a thin 2 to 3 nm silica shell was proved by EDX mapping. The small sizes of nanoparticles achieved by this method were analyzed using optical techniques, and they show typical photoluminescence in the UV-vis range that shifts toward higher energies with decreasing size.
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Affiliation(s)
- Victor A Ermakov
- Universidade Estadual de Campinas, IFGW , Campinas, São Paulo 13083-859, Brazil
| | | | | | - Emre Yassitepe
- Universidade Estadual de Campinas, IQ , Campinas, São Paulo 13083-859, Brazil
| | | | - Fernando Iikawa
- Universidade Estadual de Campinas, IFGW , Campinas, São Paulo 13083-859, Brazil
| | | | - Carlos Lenz Cesar
- Universidade Estadual de Campinas, IFGW , Campinas, São Paulo 13083-859, Brazil
- Universidade Federal do Ceará, DF , Fortaleza, Ceará 60440-900, Brazil
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Evaluation of Some Biosynthesized Silver Nanoparticles for Biomedical Applications: Hydrogen Peroxide Scavenging, Anticoagulant and Thrombolytic Activities. J CLUST SCI 2016. [DOI: 10.1007/s10876-016-1146-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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