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Yue X, Pan Q, Zhou J, Ren H, Peng C, Wang Z, Zhang Y. A simplified fluorescent lateral flow assay for melamine based on aggregation induced emission of gold nanoclusters. Food Chem 2022; 385:132670. [DOI: 10.1016/j.foodchem.2022.132670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/02/2022] [Accepted: 03/07/2022] [Indexed: 11/04/2022]
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Matczuk M, Ruzik L, Aleksenko SS, Keppler BK, Jarosz M, Timerbaev AR. Analytical methodology for studying cellular uptake, processing and localization of gold nanoparticles. Anal Chim Acta 2018; 1052:1-9. [PMID: 30685026 DOI: 10.1016/j.aca.2018.10.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/10/2018] [Accepted: 10/11/2018] [Indexed: 12/30/2022]
Abstract
Interactions of gold nanoparticles (AuNPs) with live cells are known to exert a great impact on their functions, including cell signalling, genomic, proteomic, and metabolomic processes. Modern analytical techniques applied to studying nanoparticle-cell interactions are to improve our understanding of the mode of action of AuNPs, which is essential for their approval in disease therapeutics. Such methods may vary depending on what step of particle internalization is in question, i.e., cellular uptake, intracellular transport (accompanying by changes in the chemical state), translocation to different cell compartments, interaction with relevant subcellular structures and localization. This review focuses on the implementation and critical assessment of advanced analytical methodologies to investigate the cellular processing of AuNPs. Also addressed is a sought-after issue of accounting in in-vitro studies for a chemical form in which the AuNPs enter the cell in vivo.
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Affiliation(s)
- Magdalena Matczuk
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664, Warsaw, Poland
| | - Lena Ruzik
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664, Warsaw, Poland
| | - Svetlana S Aleksenko
- Saratov State Agrarian University, Teatralnaya Sq. 1, 410012, Saratov, Russian Federation
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, A-1090, Vienna, Austria
| | - Maciej Jarosz
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664, Warsaw, Poland
| | - Andrei R Timerbaev
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego St. 3, 00-664, Warsaw, Poland; Vernadsky Institute of Geochemistry and Analytical Chemistry, Kosygin St. 19, 119991, Moscow, Russian Federation.
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Nguyen DB, Nguyen TD, Kim S, Joo SW. Raman spectroscopy and quantum-mechanical analysis of tautomeric forms in cytosine and 5-methylcytosine on gold surfaces. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:183-188. [PMID: 27912177 DOI: 10.1016/j.saa.2016.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/16/2016] [Accepted: 11/04/2016] [Indexed: 06/06/2023]
Abstract
Spectral differences between cytosine (Cyt) and 5-methylcytosine (5MC) were investigated by means of Raman spectroscopy with a combination of density functional theory (DFT) calculations. Surface-enhanced Raman scattering (SERS) revealed discriminating peaks of 5MC from those of Cyt upon adsorption on gold nanoparticles (AuNPs). Among the notable features, the multiple bands between 850 and 700cm-1 for the ring-breathing modes of 5MC and Cyt could be correlated well with the simulated spectra based on the DFT calculations of the adsorbates on the gold cluster atoms. The relative energetic stabilities of the enol/keto and the amino/imino tautomeric forms of Cyt and 5MC have been estimated using DFT calculations, before and after binding six atom gold clusters. Among the six tautomeric forms, the 7H keto amino and the 4H imino trans forms are expected to be predominant in binding gold atoms, whereas the enol trans/cis conformers would coexist in the free gas phase. Our approach may provide useful theoretical guidelines for identifying 5MC from Cyt by analyzing Raman spectra on gold surfaces on the basis of quantum-mechanical calculations.
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Affiliation(s)
- Dinh Bao Nguyen
- Department of Chemistry, Soongsil University, Seoul 156-743, Republic of Korea; Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul 156-743, Republic of Korea
| | - Thanh Danh Nguyen
- Department of Chemistry, Soongsil University, Seoul 156-743, Republic of Korea; Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul 156-743, Republic of Korea
| | - Sangsoo Kim
- School of Systems Biomedical Science, Soongsil University, Seoul 156-743, Republic of Korea
| | - Sang-Woo Joo
- Department of Chemistry, Soongsil University, Seoul 156-743, Republic of Korea; Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul 156-743, Republic of Korea.
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