1
|
Kojom Foko LP, Hawadak J, Verma V, Belle Ebanda Kedi P, Eboumbou Moukoko CE, Kamaraju R, Pande V, Singh V. Phytofabrication and characterization of Alchornea cordifolia silver nanoparticles and evaluation of antiplasmodial, hemocompatibility and larvicidal potential. Front Bioeng Biotechnol 2023; 11:1109841. [PMID: 36926684 PMCID: PMC10011455 DOI: 10.3389/fbioe.2023.1109841] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 02/10/2023] [Indexed: 03/04/2023] Open
Abstract
Purpose: The recent emergence of Plasmodium falciparum (Pf) parasites resistant to current artemisinin-based combination therapies in Africa justifies the need to develop new strategies for successful malaria control. We synthesized, characterized and evaluated medical applications of optimized silver nanoparticles using Alchornea cordifolia (AC-AgNPs), a plant largely used in African and Asian traditional medicine. Methods: Fresh leaves of A. cordifolia were used to prepare aqueous crude extract, which was mixed with silver nitrate for AC-AgNPs synthesis and optimization. The optimized AC-AgNPs were characterized using several techniques including ultraviolet-visible spectrophotometry (UV-Vis), scanning/transmission electron microscopy (SEM/TEM), powder X-ray diffraction (PXRD), selected area electron diffraction (SAED), energy dispersive X-ray spectroscopy (EDX), Fourier transformed infrared spectroscopy (FTIR), dynamic light scattering (DLS) and Zeta potential. Thereafter, AC-AgNPs were evaluated for their hemocompatibility and antiplasmodial activity against Pf malaria strains 3D7 and RKL9. Finally, lethal activity of AC-AgNPs was assessed against mosquito larvae of Anopheles stephensi, Culex quinquefasciatus and Aedes aegypti which are vectors of neglected diseases such as dengue, filariasis and chikungunya. Results: The AC-AgNPs were mostly spheroidal, polycrystalline (84.13%), stable and polydispersed with size of 11.77 ± 5.57 nm. FTIR revealed the presence of several peaks corresponding to functional chemical groups characteristics of alkanoids, terpenoids, flavonoids, phenols, steroids, anthraquonones and saponins. The AC-AgNPs had a high antiplasmodial activity, with IC50 of 8.05 μg/mL and 10.31 μg/mL against 3D7 and RKL9 Plasmodium falciparum strains. Likewise, high larvicidal activity of AC-AgNPs was found after 24 h- and 48 h-exposure: LC50 = 18.41 μg/mL and 8.97 μg/mL (Culex quinquefasciatus), LC50 = 16.71 μg/mL and 7.52 μg/mL (Aedes aegypti) and LC50 = 10.67 μg/mL and 5.85 μg/mL (Anopheles stephensi). The AC-AgNPs were highly hemocompatible (HC50 > 500 μg/mL). Conclusion: In worrying context of resistance of parasite and mosquitoes, green nanotechnologies using plants could be a cutting-edge alternative for drug/insecticide discovery and development.
Collapse
Affiliation(s)
- Loick Pradel Kojom Foko
- Parasite and Host Biology Group, ICMR-National Institute of Malaria Research, Dwarka, New Delhi, India.,Department of Biotechnology, Kumaun University, Nainital, Uttarakhand, India
| | - Joseph Hawadak
- Parasite and Host Biology Group, ICMR-National Institute of Malaria Research, Dwarka, New Delhi, India.,Department of Biotechnology, Kumaun University, Nainital, Uttarakhand, India
| | - Vaishali Verma
- Vector Biology Group, ICMR-National Institute of Malaria Research, Dwarka, New Delhi, India
| | - Philippe Belle Ebanda Kedi
- Department of Animal Organisms, Faculty of Sciences, The University of Douala, Douala, Cameroon.,Nanosciences African Network, iThemba LABS-National Research Foundation, Cape Town, South Africa.,Laboratory of Innovative Nanostructured Material (NANO: C), Faculty of Medicine and Pharmaceutical Sciences, The University of Douala, Douala, Cameroon
| | - Carole Else Eboumbou Moukoko
- Department of Biological Sciences, Faculty of Medicine and Pharmaceutical Sciences, The University of Douala, Douala, Cameroon.,Malaria Research Unit, Centre Pasteur Cameroon, Yaoundé, Cameroon.,Laboratory of Parasitology, Mycology and Virology, Postgraduate Training Unit for Health Sciences, Postgraduate School for Pure and Applied Sciences, The University of Douala, Douala, Cameroon
| | - Raghavendra Kamaraju
- Vector Biology Group, ICMR-National Institute of Malaria Research, Dwarka, New Delhi, India
| | - Veena Pande
- Department of Biotechnology, Kumaun University, Nainital, Uttarakhand, India
| | - Vineeta Singh
- Parasite and Host Biology Group, ICMR-National Institute of Malaria Research, Dwarka, New Delhi, India
| |
Collapse
|
3
|
Santos TS, Silva TM, Cardoso JC, de Albuquerque-Júnior RLC, Zielinska A, Souto EB, Severino P, Mendonça MDC. Biosynthesis of Silver Nanoparticles Mediated by Entomopathogenic Fungi: Antimicrobial Resistance, Nanopesticides, and Toxicity. Antibiotics (Basel) 2021; 10:852. [PMID: 34356773 PMCID: PMC8300670 DOI: 10.3390/antibiotics10070852] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/01/2021] [Accepted: 07/12/2021] [Indexed: 12/23/2022] Open
Abstract
Silver nanoparticles are widely used in the biomedical and agri-food fields due to their versatility. The use of biological methods for the synthesis of silver nanoparticles has increased considerably due to their feasibility and high biocompatibility. In general, microorganisms have been widely explored for the production of silver nanoparticles for several applications. The objective of this work was to evaluate the use of entomopathogenic fungi for the biological synthesis of silver nanoparticles, in comparison to the use of other filamentous fungi, and the possibility of using these nanoparticles as antimicrobial agents and for the control of insect pests. In addition, the in vitro methods commonly used to assess the toxicity of these materials are discussed. Several species of filamentous fungi are known to have the ability to form silver nanoparticles, but few studies have been conducted on the potential of entomopathogenic fungi to produce these materials. The investigation of the toxicity of silver nanoparticles is usually carried out in vitro through cytotoxicity/genotoxicity analyses, using well-established methodologies, such as MTT and comet assays, respectively. The use of silver nanoparticles obtained through entomopathogenic fungi against insects is mainly focused on mosquitoes that transmit diseases to humans, with satisfactory results regarding mortality estimates. Entomopathogenic fungi can be employed in the synthesis of silver nanoparticles for potential use in insect control, but there is a need to expand studies on toxicity so to enable their use also in insect control in agriculture.
Collapse
Affiliation(s)
- Tárcio S. Santos
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Tarcisio M. Silva
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Juliana C. Cardoso
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Ricardo L. C. de Albuquerque-Júnior
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Aleksandra Zielinska
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;
- Institute of Human Genetics, Polish Academy of Sciences, 60-479 Poznan, Poland
| | - Eliana B. Souto
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;
- CEB—Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
| | - Patrícia Severino
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Marcelo da Costa Mendonça
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
- Sergipe Agricultural Development Company (Emdagro), Av. Carlos Rodrigues da Cruz s/n, Aracaju 49081-015, Brazil
| |
Collapse
|