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Fouad H, Yang G, El-Sayed AA, Mao G, Khalafallah D, Saad M, Ga'al H, Ibrahim E, Mo J. Green synthesis of AgNP-ligand complexes and their toxicological effects on Nilaparvata lugens. J Nanobiotechnology 2021; 19:318. [PMID: 34645452 PMCID: PMC8513204 DOI: 10.1186/s12951-021-01068-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/30/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Despite developments in nanotechnology for use in the pharmaceutical field, there is still a need for implementation of this technology in agrochemistry. In this study, silver nanoparticles (AgNPs) were successfully prepared by a facile and an eco-friendly route using two different ligands, 2'-amino-1,1':4',1″-terphenyl-3,3″,5,5″-tetracarboxylic acid (H4L) and 1,3,6,8-tetrakis (p-benzoic acid)-pyrene (TBAPy), as reducing agents. The physiochemical properties of the as-obtained AgNPs were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The toxicity of H4L-AgNP and TBAPy-AgNP against the brown planthopper (BPH, Nilaparvata lugens) was also measured. RESULTS SEM and TEM analyses demonstrated the formation of quasi-spherical AgNP structures in the presence of H4L and TBAPy. Insecticidal assays showed that TBAPy is less effective against N. lugens, with a median lethal concentration (LC50) of 810 mg/L, while the toxicity of H4L increased and their LC50 reached 786 mg/L 168 h posttreatment at a high concentration of 2000 mg/L. H4L-AgNPs were also highly toxic at a low concentration of 20 mg/L, with LC50 = ~ 3.9 mg/L 168 h posttreatment, while TBAPy-AgNPs exhibited less toxicity at the same concentration, with LC50 = ~ 4.6 mg/L. CONCLUSIONS These results suggest that the synthesized AgNPs using the two ligands may be a safe and cheaper method compared with chemical insecticides for protection of rice plants from pests and has potential as an effective insecticide in the N. lugens pest management program.
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Affiliation(s)
- Hatem Fouad
- Ministry of Agriculture, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang, 310058, People's Republic of China.
- Department of Field Crop Pests, Plant Protection Research Institute, Agricultural Research Centre 12622, Dokki, Cairo, Egypt.
| | - Guiying Yang
- Ministry of Agriculture, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang, 310058, People's Republic of China
| | - Ahmed A El-Sayed
- Photochemistry Department, National Research Center, Dokki, Giza, Egypt
| | - Guofeng Mao
- Ministry of Agriculture, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang, 310058, People's Republic of China
| | - Diab Khalafallah
- State Key Laboratory of Silicon Material, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
| | - Mahmoud Saad
- Department of Field Crop Pests, Plant Protection Research Institute, Agricultural Research Centre 12622, Dokki, Cairo, Egypt
| | - Hassan Ga'al
- Ministry of Agriculture, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang, 310058, People's Republic of China
| | - Ezzeldin Ibrahim
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Jianchu Mo
- Ministry of Agriculture, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang, 310058, People's Republic of China.
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One-pot synthesis and characterization of ovalbumin-conjugated gold nanoparticles: A comparative study of adjuvanticity against the physical mixture of ovalbumin and gold nanoparticles. Int J Pharm 2019; 571:118704. [PMID: 31536763 DOI: 10.1016/j.ijpharm.2019.118704] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/09/2019] [Accepted: 09/15/2019] [Indexed: 11/21/2022]
Abstract
Only few adjuvants are licensed for use in humans and there is a need to develop safe and improved vaccine adjuvants. In this study, we report the one-pot synthesis of antigen ovalbumin (OVA)-conjugated gold nanoparticles (OVA@GNPs). A systematical study was performed by comparing OVA@GNPs with the simple mixture of OVA and gold nanoparticles (OVA+GNPs), including their physiochemical properties through spectrometric and electrophoretic analysis, in vitro stability, cytotoxicity and cellular uptake, and in vivo humoral immune responses following subcutaneous and transcutaneous immunization in mice. The results demonstrate a much stronger interaction between protein and GNPs in OVA@GNPs than OVA+GNPs, which makes OVA@GNPs more stable under in vitro conditions than OVA+GNPs with the ability to induce 4 times higher OVA-specific serum IgG titers following subcutaneous immunization. We also show the dose sparing of OVA@GNPs, as the dosage for aluminum adjuvant required to reach to an equivalent OVA-specific antibody titer was almost five times higher than OVA@GNPs. However, we found that the co-administration of small-sized GNPs had a limited ability for the transcutaneous delivery of OVA. These results demonstrate the potential application of one-pot synthesis approach for producing antigen protein-conjugated gold nanoparticles for vaccine delivery.
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Castillo PM, Jimenez-Ruiz A, Carnerero JM, Prado-Gotor R. Exploring Factors for the Design of Nanoparticles as Drug Delivery Vectors. Chemphyschem 2018; 19:2810-2828. [DOI: 10.1002/cphc.201800388] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Paula M. Castillo
- Physical Chemistry Department. Faculty of Chemistry; University of Seville; C/Prof. García González, s/n 41012 Sevilla Spain
| | - Aila Jimenez-Ruiz
- Physical Chemistry Department. Faculty of Chemistry; University of Seville; C/Prof. García González, s/n 41012 Sevilla Spain
| | - Jose M. Carnerero
- Physical Chemistry Department. Faculty of Chemistry; University of Seville; C/Prof. García González, s/n 41012 Sevilla Spain
| | - Rafael Prado-Gotor
- Physical Chemistry Department. Faculty of Chemistry; University of Seville; C/Prof. García González, s/n 41012 Sevilla Spain
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Ungureanu C, Koning GA, van Leeuwen TG, Manohar S. The 'nanobig rod' class of gold nanorods: optimized dimensions for improved in vivo therapeutic and imaging efficacy. NANOTECHNOLOGY 2013; 24:215102. [PMID: 23619162 DOI: 10.1088/0957-4484/24/21/215102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Currently, gold nanorods can be synthesized in a wide range of sizes. However, for the intended biological applications gold nanorods with approximate dimensions 50 nm × 15 nm are used. We investigate by computer simulation the effect of particle dimensions on the optical and thermal properties in the context of the specific applications of photoacoustic imaging. In addition we discuss the influence of particle size in overcoming the following biophysical barriers when administrated in vivo: extravasation, avoidance of uptake by organs of the reticuloendothelial system, penetration through the interstitium, binding capability and uptake by the target cells. Although more complex biological influences can be introduced in future analysis, the present work illustrates that larger gold nanorods, designated by us as 'nanobig rods', may perform better at meeting the requirements for successful in vivo applications compared to their smaller counterparts, which are conventionally used.
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Affiliation(s)
- Constantin Ungureanu
- Biomedical Photonic and Imaging Group, MIRA Institute for Biomedical Technology and Technical Medicine, Faculty of Science and Technology, University of Twente, PO Box 217, 7500AE Enschede, The Netherlands.
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