1
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Mukherjee S, Klarenbeek J, El Oualid F, van den Broek B, Jalink K. "Radical" differences between two FLIM microscopes affect interpretation of cell signaling dynamics. iScience 2024; 27:110268. [PMID: 39036041 PMCID: PMC11257777 DOI: 10.1016/j.isci.2024.110268] [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: 09/12/2023] [Revised: 02/12/2024] [Accepted: 06/11/2024] [Indexed: 07/23/2024] Open
Abstract
The outcome of cell signaling depends not only on signal strength but also on temporal progression. We use Fluorescence Lifetime Imaging of Resonance Energy Transfer (FLIM/FRET) biosensors to investigate intracellular signaling dynamics. We examined the β1 receptor-Gαs-cAMP signaling axis using both widefield frequency domain FLIM (fdFLIM) and fast confocal time-correlated single photon counting (TCSPC) setups. Unexpectedly, we observed that fdFLIM revealed transient cAMP responses in HeLa and Cos7 cells, contrasting with sustained responses as detected with TCSPC. Investigation revealed no light-induced effects on cAMP generation or breakdown. Rather, folic acid present in the imaging medium appeared to be the culprit, as its excitation with blue light sensitized degradation of β1 agonists. Our findings highlight the impact of subtle phototoxicity on experimental outcomes, advocating confocal TCSPC for reliable analysis of response kinetics and stressing the need for full disclosure of chemical formulations by scientific vendors.
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Affiliation(s)
- Sravasti Mukherjee
- Department of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
- Swammerdam Institute of Life Sciences, University of Amsterdam, Science Park 904, Amsterdam 1098 XH, the Netherlands
| | - Jeffrey Klarenbeek
- Department of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
| | - Farid El Oualid
- UbiQ Bio B.V., Science Park 301, Amsterdam 1098 XH, the Netherlands
| | - Bram van den Broek
- Department of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
- BioImaging Facility, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
| | - Kees Jalink
- Department of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
- Swammerdam Institute of Life Sciences, University of Amsterdam, Science Park 904, Amsterdam 1098 XH, the Netherlands
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2
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Xiang H, Tong Y, Zhu F, Jiang J, Chen W. Interactions between organic matter and alkaline minerals in bauxite residue: implication for soil restoration. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:43174-43185. [PMID: 38896218 DOI: 10.1007/s11356-024-34006-1] [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: 01/30/2024] [Accepted: 06/11/2024] [Indexed: 06/21/2024]
Abstract
Ecological restoration of bauxite residue has received extensive attention, and organic matter plays a crucial role in the soil formation process of bauxite residue. However, the interaction between organic matter and alkaline minerals in bauxite residue is not well understood. In this work, molecular spectroscopic techniques combined with isothermal titration calorimetry (ITC) were employed to investigate the interactions between humic acid (HA) and four representative alkaline minerals in bauxite residue (calcite, garnet, sodalite, and cancrinite). The results show that the adsorption processes of HA onto calcite and garnet were primarily governed by monolayer surface adsorption and controlled by surface reactions, which were different for sodalite and cancrinite. Both garnet and cancrinite had strong binding affinities with fluorescent HA, while cancrinite only bound with a small fraction of HA. In contrast, the bindings of calcite and sodalite with fluorescent HA were weak. The ITC results indicate distinct thermodynamic properties of different alkaline minerals in the interaction with HA. The molar enthalpy of calcite was - 45.88 kJ/mol, which was much higher than those of garnet, sodalite, and cancrinite, suggesting that calcite exhibited a relatively uniform interaction mechanism with HA dominated by enthalpy change, while the others showed heterogeneous entropy-driven mechanisms. The findings contribute to a better understanding on the microscale connections between organic matter and alkaline minerals in bauxite residue.
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Affiliation(s)
- Huiqin Xiang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Yang Tong
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Feng Zhu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jun Jiang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Wei Chen
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
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3
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Filimonova MV, Kolmanovich DD, Tikhonowski GV, Petrunya DS, Kotelnikova PA, Shitova AA, Soldatova OV, Filimonov AS, Rybachuk VA, Kosachenko AO, Nikolaev KA, Demyashkin GA, Popov AA, Savinov MS, Popov AL, Zelepukin IV, Lipengolts AA, Shpakova KE, Kabashin AV, Koryakin SN, Deyev SM, Zavestovskaya IN. Binary Proton Therapy of Ehrlich Carcinoma Using Targeted Gold Nanoparticles. DOKL BIOCHEM BIOPHYS 2024; 516:111-114. [PMID: 38795244 DOI: 10.1134/s1607672924700819] [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: 01/25/2024] [Revised: 02/15/2024] [Accepted: 02/20/2024] [Indexed: 05/27/2024]
Abstract
Proton therapy can treat tumors located in radiation-sensitive tissues. This article demonstrates the possibility of enhancing the proton therapy with targeted gold nanoparticles that selectively recognize tumor cells. Au-PEG nanoparticles at concentrations above 25 mg/L and 4 Gy proton dose caused complete death of EMT6/P cells in vitro. Binary proton therapy using targeted Au-PEG-FA nanoparticles caused an 80% tumor growth inhibition effect in vivo. The use of targeted gold nanoparticles is promising for enhancing the proton irradiation effect on tumor cells and requires further research to increase the therapeutic index of the approach.
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Affiliation(s)
- M V Filimonova
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
- Obninsk Institute for Nuclear Power Engineering-Branch of the National Research Nuclear University MEPhI, Obninsk, Russia
| | - D D Kolmanovich
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Russia
- Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
| | - G V Tikhonowski
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
| | - D S Petrunya
- Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia.
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia.
| | - P A Kotelnikova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - A A Shitova
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - O V Soldatova
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - A S Filimonov
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - V A Rybachuk
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - A O Kosachenko
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - K A Nikolaev
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - G A Demyashkin
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - A A Popov
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
| | - M S Savinov
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
| | - A L Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Russia
- Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
| | - I V Zelepukin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - A A Lipengolts
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
- Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, Moscow, Russia
| | - K E Shpakova
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
- Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, Moscow, Russia
| | - A V Kabashin
- Aix-Marseille University, CNRS, Marseille, France
| | - S N Koryakin
- Tsyb Medical Radiological Research Center-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Obninsk, Russia
- Obninsk Institute for Nuclear Power Engineering-Branch of the National Research Nuclear University MEPhI, Obninsk, Russia
| | - S M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - I N Zavestovskaya
- Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
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4
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Borisenkova AA, Bolshakova OI, Titova AV, Ryabokon IS, Markova MA, Lyutova ZB, Sedov VP, Varfolomeeva EY, Bakhmetyev VV, Arutyunyan AV, Burdakov VS, Sarantseva SV. Fullerene C 60 Conjugate with Folic Acid and Polyvinylpyrrolidone for Targeted Delivery to Tumor Cells. Int J Mol Sci 2024; 25:5350. [PMID: 38791388 PMCID: PMC11120752 DOI: 10.3390/ijms25105350] [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: 04/18/2024] [Revised: 05/04/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024] Open
Abstract
The use of targeted drug delivery systems, including those based on selective absorption by certain receptors on the surface of the target cell, can lead to a decrease in the minimum effective dose and the accompanying toxicity of the drug, as well as an increase in therapeutic efficacy. A fullerene C60 conjugate (FA-PVP-C60) with polyvinylpyrrolidone (PVP) as a biocompatible spacer and folic acid (FA) as a targeting ligand for tumor cells with increased expression of folate receptors (FR) was obtained. Using 13C NMR spectroscopy, FT-IR, UV-Vis spectrometry, fluorometry and thermal analysis, the formation of the conjugate was confirmed and the nature of the binding of its components was established. The average particle sizes of the conjugate in aqueous solutions and cell culture medium were determined using dynamic light scattering (DLS) and nanoparticle tracking analysis (NTA). The FA-PVP-C60 showed antiradical activity against •DPPH, •OH and O2•-, but at the same time, it was shown to generate 1O2. It was found that the conjugate in the studied concentration range (up to 200 μg/mL) is non-toxic in vitro and does not affect the cell cycle. To confirm the ability of the conjugate to selectively accumulate through folate-mediated endocytosis, its uptake into cells was analyzed by flow cytometry and confocal microscopy. It was shown that the conjugate is less absorbed by A549 cells with low FR expression than by HeLa, which has a high level of expression of this receptor.
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Affiliation(s)
- Alina A. Borisenkova
- Radiation Technology Department, St. Petersburg State Institute of Technology (Technical University), 190013 St. Petersburg, Russia
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Olga I. Bolshakova
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Anna V. Titova
- Radiation Technology Department, St. Petersburg State Institute of Technology (Technical University), 190013 St. Petersburg, Russia
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Irina S. Ryabokon
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Maria A. Markova
- Radiation Technology Department, St. Petersburg State Institute of Technology (Technical University), 190013 St. Petersburg, Russia
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Zhanna B. Lyutova
- Radiation Technology Department, St. Petersburg State Institute of Technology (Technical University), 190013 St. Petersburg, Russia
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Victor P. Sedov
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Elena Yu. Varfolomeeva
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Vadim V. Bakhmetyev
- Radiation Technology Department, St. Petersburg State Institute of Technology (Technical University), 190013 St. Petersburg, Russia
| | - Alexandr V. Arutyunyan
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Vladimir S. Burdakov
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
| | - Svetlana V. Sarantseva
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Russia
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Elnagar N, Elgiddawy N, El Rouby WMA, Farghali AA, Korri-Youssoufi H. Impedimetric Detection of Cancer Markers Based on Nanofiber Copolymers. BIOSENSORS 2024; 14:77. [PMID: 38391996 PMCID: PMC10887276 DOI: 10.3390/bios14020077] [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: 12/27/2023] [Revised: 01/23/2024] [Accepted: 01/29/2024] [Indexed: 02/24/2024]
Abstract
The sensitive determination of folate receptors (FRs) in the early stages of cancer is of great significance for controlling the progression of cancerous cells. Many folic acid (FA)-based electrochemical biosensors have been utilized to detect FRs with promising performances, but most were complicated, non-reproducible, non-biocompatible, and time and cost consuming. Here, we developed an environmentally friendly and sensitive biosensor for FR detection. We proposed an electrochemical impedimetric biosensor formed by nanofibers (NFs) of bio-copolymers prepared by electrospinning. The biosensor combines the advantages of bio-friendly polymers, such as sodium alginate (SA) and polyethylene oxide (PEO) as an antifouling polymer, with FA as a biorecognition element. The NF nanocomposites were characterized using various techniques, including SEM, FTIR, zeta potential (ZP), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). We evaluated the performance of the NF biosensor using EIS and demonstrated FR detection in plasma with a limit of detection of 3 pM. Furthermore, the biosensor showed high selectivity, reliability, and good stability when stored for two months. This biosensor was constructed from 'green credentials' holding polymers that are highly needed in the new paradigm shift in the medical industry.
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Affiliation(s)
- Noha Elnagar
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 62 511, Egypt; (N.E.); (W.M.A.E.R.); (A.A.F.)
- Université Paris-Saclay, Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), ECBB, 17 Avenue des Sciences, Site Henri Moisson, 91400 Orsay, France
| | - Nada Elgiddawy
- Department of Biotechnology and Life Sciences, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 62 511, Egypt;
| | - Waleed M. A. El Rouby
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 62 511, Egypt; (N.E.); (W.M.A.E.R.); (A.A.F.)
| | - Ahmed A. Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 62 511, Egypt; (N.E.); (W.M.A.E.R.); (A.A.F.)
| | - Hafsa Korri-Youssoufi
- Université Paris-Saclay, Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), ECBB, 17 Avenue des Sciences, Site Henri Moisson, 91400 Orsay, France
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6
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Nara S, Parasher G, Malhotra BD, Rawat M. Novel role of folate (vitamin B9) released by fermenting bacteria under Human Intestine like environment. Sci Rep 2023; 13:20226. [PMID: 37980374 PMCID: PMC10657476 DOI: 10.1038/s41598-023-47243-0] [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: 07/03/2023] [Accepted: 11/10/2023] [Indexed: 11/20/2023] Open
Abstract
The anaerobic region of the gastrointestinal (GI) tract has been replicated in the anaerobic chamber of a microbial fuel cell (MFC). Electroactive biomolecules released by the facultative anaerobes (Providencia rettgeri) under anoxic conditions have been studied for their potential role for redox balance. MALDI study reveals the presence of vitamin B9 (folate), 6-methylpterin, para-aminobenzoic acid (PABA) and pteroic acid called pterin pool. ATR-FTIR studies further confirm the presence of the aromatic ring and side chains of folate, 6-methylpterin and PABA groups. The photoluminescence spectra of the pool exhibit the maximum emission at 420, 425, 440, and 445 nm when excited by 310, 325, 350, and 365 nm wavelengths (day 20 sample) highlighting the presence of tunable bands. The cyclic voltammetric studies indicate the active participation of pterin pool molecules in the transfer of electrons with redox potentials at - 0.2 V and - 0.4 V for p-aminobenzoate and pterin groups, respectively. In addition, it is observed that under prolonged conditions of continuous oxidative stress (> 20 days), quinonoid tetrahydrofolate is formed, leading to temporary storage of charge. The results of the present study may potentially be useful in designing effective therapeutic strategies for the management of various GI diseases by promoting or blocking folate receptors.
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Affiliation(s)
- Sharda Nara
- Nanobioelectronics Laboratory, Department of Biotechnology, Delhi Technological University, Delhi, 110042, India
| | - Gulshan Parasher
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, 87131, USA
| | - Bansi Dhar Malhotra
- Nanobioelectronics Laboratory, Department of Biotechnology, Delhi Technological University, Delhi, 110042, India.
- Environmental Sciences & Biomedical Metrology, CSIR-National Physical Laboratory, Dr K.S. Krishnan Road, New Delhi, 110012, India.
| | - Manmeet Rawat
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, 87131, USA.
- Division of Gastroenterology and Hepatology, Department of Medicine, The Penn State University College of Medicine, Penn State University, 500 University Drive, Hershey, PA, 17033, USA.
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Herdiana Y, Wathoni N, Shamsuddin S, Muchtaridi M. Cytotoxicity Enhancement of α-Mangostin with Folate-Conjugated Chitosan Nanoparticles in MCF-7 Breast Cancer Cells. Molecules 2023; 28:7585. [PMID: 38005306 PMCID: PMC10674958 DOI: 10.3390/molecules28227585] [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: 09/28/2023] [Revised: 11/02/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
α-mangostin (AM) is a promising natural anticancer agent that can be used in cancer research. However, its effectiveness can be limited by poor solubility and bioavailability. To address this issue, chitosan-based nanoparticles (CSNPs) have been investigated as a potential delivery system to enhance the cytotoxicity to cancer cells and improve selectivity against normal cells. In this study, we developed folate-conjugated chitosan nanoparticles (F-CS-NPs) using a carbodiimide-based conjugation method to attach folate to chitosan (CS), which have different molecular weights. The NPs were crosslinked using tripolyphosphate (TPP) via ionic gelation. To characterize the F-CS-NPs, we utilized various analytical techniques, including transmission electron microscopy (TEM) to evaluate the particle size and morphology, Fourier-transform infrared spectroscopy (FTIR) to confirm the presence of functional groups, and ultraviolet-visible spectroscopy (UV-Vis) to measure the absorption spectrum and confirm the presence of folate. The particle size of AM-F-CS-NPs ranged from 180 nm to 250 nm, with many having favorable charges ranging from +40.33 ± 3.4 to 10.69 ± 1.3 mV. All NPs exhibited the same spherical morphology. The use of F-CS-NPs increased drug release, followed by a sustained release pattern. We evaluated the cytotoxicity of AM, AM-F-CS-HMW, and AM-F-CS-LMW NPs against MCF-7 cells and found IC50 values of 8.47 ± 0.49, 5.3 ± 0.01, and 4.70 ± 0.11 µg/mL, respectively. These results confirm the improved cytotoxicity of AM in MCF-7 cells when delivered via F-CS-NPs. Overall, our in vitro study demonstrated that the properties of F-CS-NPs greatly influence the cytotoxicity of AM in MCF-7 breast cancer cells (significantly different (p < 0.05)). The use of F-CS-NPs as a drug-delivery system for AM may have the potential to develop novel therapies for breast cancer.
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Affiliation(s)
- Yedi Herdiana
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia;
| | - Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia;
| | - Shaharum Shamsuddin
- School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia;
- Nanobiotech Research Initiative, Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang 11800, Malaysia
- USM-RIKEN Interdisciplinary Collaboration on Advanced Sciences (URICAS), Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Muchtaridi Muchtaridi
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia;
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Oliveira RI, de Oliveira IN, de Conto JF, de Souza AM, Batistuzzo de Medeiros SR, Egues SM, Padilha FF, Hernández-Macedo ML. Photocatalytic effect of N-TiO 2 conjugated with folic acid against biofilm-forming resistant bacteria. Heliyon 2023; 9:e22108. [PMID: 38027799 PMCID: PMC10658382 DOI: 10.1016/j.heliyon.2023.e22108] [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: 03/17/2023] [Revised: 09/08/2023] [Accepted: 11/04/2023] [Indexed: 12/01/2023] Open
Abstract
Antibiotic resistance challenges the treatment of bacterial biofilm-related infections, but the use of nanoparticles as a treatment is a promising strategy to overcome bacterial infections. This study applied nitrogen-doped titanium dioxide (N-TiO2) conjugated with folic acid (FA) on biofilm-forming resistant bacteria. The photocatalytic effect of TiO2 nanoparticles (NPs) was studied under ultraviolet (UV), visible light, and dark conditions at 60, 120, and 180 min against planktonic cells and biofilms of Staphylococcus aureus, methicillin-resistant Staphylococcus aureus (MRSA), and Pseudomonas aeruginosa. TiO2 NPs were in the anatase phase, spherical shaped with sizes of 10-13 nm, and effectively doped and conjugated with N and FA. The FA-conjugated nanoparticles (N-TiO2-FA and FA-TiO2) were shown to have a bactericidal effect on all bacteria between 60 and 180 min under UV and visible light conditions. Concerning biofilms, N-TiO2-FA was shown to have a highly disruptive effect on all bacterial biofilms under UV irradiation at 180 min. Meanwhile, the nanoparticles did not show DNA damaging potential and they had no cytostatic effect, indicating that these NPs are biocompatible. In sum, nanoparticle conjugation with FA promoted photocatalytic effectiveness, revealing the promise this nanomaterial holds as a biocompatible antimicrobial agent.
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Affiliation(s)
- Raphaella I.S. Oliveira
- Graduate Program in Industrial Biotechnology, Tiradentes University, 49032-490, Aracaju, SE, Brazil
- Laboratory of Molecular Biology, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
| | - Iracema N. de Oliveira
- Laboratory of Molecular Biology, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
| | - Juliana F. de Conto
- Laboratory of Materials Synthesis and Chromatography, Center for Studies in Colloidal Systems, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
| | - Augusto M. de Souza
- Department of Cell Biology and Genetics, Bioscience Center, Federal University of Rio Grande do Norte, 59078-900, Natal, RN, Brazil
| | - Silvia R. Batistuzzo de Medeiros
- Department of Cell Biology and Genetics, Bioscience Center, Federal University of Rio Grande do Norte, 59078-900, Natal, RN, Brazil
| | - Silvia M. Egues
- Laboratory of Materials Synthesis and Chromatography, Center for Studies in Colloidal Systems, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
- Graduate Program in Process Engineering, Tiradentes University, 49037-580 Aracaju, SE, Brazil
| | - Francine F. Padilha
- Graduate Program in Industrial Biotechnology, Tiradentes University, 49032-490, Aracaju, SE, Brazil
- Biomaterials Laboratory, Technology and Research Institute, Tiradentes University, Aracaju, Sergipe, Brazil
| | - Maria L. Hernández-Macedo
- Graduate Program in Industrial Biotechnology, Tiradentes University, 49032-490, Aracaju, SE, Brazil
- Laboratory of Molecular Biology, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
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9
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Ilyas S, E M Sahnoun S, Szymura A, Pes J, Habib S, Florea A, Schäfer L, Buhl EM, Morgenroth A, Habib P, Mottaghy FM, Mathur S. Validation of Dual-Action Chemo-Radio-Labeled Nanocarriers with High Efficacy against Triple-Negative Breast Cancer. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48963-48977. [PMID: 37831583 DOI: 10.1021/acsami.3c10579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
Identification and selectivity of molecular targets with prolonged action for difficult-to-target cancer such as triple-negative breast cancer (TNBC) represent a persisting challenge in the precision delivery of therapeutics. In the quest to target undruggable sites, this study validates the bioavailability of polydopamine-sealed mesoporous silica nanocarriers (PDA-mSiO2) for in vivo drug delivery to TNBC. For controlled transport and release, the chemotherapeutic drug doxorubicin was encapsulated in mSiO2 nanocarriers coated with a PDA layer serving as a stimuli-responsive gatekeeper or seal. For unifying targeting and treatment modalities, these nanocarriers were covalently conjugated to a macrocyclic chelator (DOTA) and folate (FA-mSiO2.) that enabled incorporation of radionuclides and identification of FR Alpha (FolRα) receptors present on TNBC cells. The robust chemical design of FA- and DOTA-functionalized PDA-coated mSiO2 nanocarriers constitutes mild reaction conditions to avoid the loss of surface-bound molecules. The radiolabeling studies with the theranostic pair 68Ga and 177Lu showed quantitative trends for radiochemical efficacy and purity. Nanocarriers equipped with both radiolabels and affinity ligands were optimally stable when incubated with human serum for up to 120 h (177Lu), demonstrating hydrophilicity with a partition coefficient (log P) of -3.29 ± 0.08. Specifically, when incubated with TNBC cells, the cells received significant FA-mSiO2 carriers, demonstrating efficient carrier internalization and time-dependent uptake. Moreover, in vivo results visualize the retention of drug-filled carriers at the tumor sites for a long time, which holds promise for therapeutic studies. This research work demonstrates for the first time the successful dual conjugation of nanocarriers through the colocation of radionuclides and anticancer drugs that is promising for both live molecular imaging and enhanced therapeutic effect for TNBC.
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Affiliation(s)
- Shaista Ilyas
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany
| | - Sabri E M Sahnoun
- Department of Nuclear Medicine, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
| | - Annika Szymura
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany
| | - Jonas Pes
- Department of Neurology, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
| | - Shahin Habib
- Department of Nuclear Medicine, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
| | - Alexandru Florea
- Department of Nuclear Medicine, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center (MUMC+), 6202 Maastricht, The Netherlands
- School for Cardiovascular Diseases (CARIM), Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
| | - Laura Schäfer
- Department of Nuclear Medicine, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
| | - Eva Miriam Buhl
- Electron Microscopy Facility, Institute of Pathology, University Hospital Aachen, RWTH Aachen University, 52074 Aachen, Germany
| | - Agnieszka Morgenroth
- Department of Nuclear Medicine, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
| | - Pardes Habib
- Department of Neurology, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
- Institute of Biochemistry and Molecular Immunology, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
- JARA-BRAIN Institute of Molecular Neuroscience and Neuroimaging, Forschungszentrum Jülich GmbH and RWTH Aachen University, 52074 Aachen, Germany
| | - Felix M Mottaghy
- Department of Nuclear Medicine, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center (MUMC+), 6202 Maastricht, The Netherlands
- School for Cardiovascular Diseases (CARIM), Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
- Center of Integrated Oncology (CIO), Universities of Aachen, Bonn, Cologne, and Düsseldorf, 50937 Cologne, Germany
| | - Sanjay Mathur
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany
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10
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Benkowska-Biernacka D, Mucha SG, Firlej L, Formalik F, Bantignies JL, Anglaret E, Samoć M, Matczyszyn K. Strongly Emitting Folic Acid-Derived Carbon Nanodots for One- and Two-Photon Imaging of Lyotropic Myelin Figures. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37366586 DOI: 10.1021/acsami.3c05656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Non-invasive imaging of morphological changes in biologically relevant lipidic mesophases is essential for the understanding of membrane-mediated processes. However, its methodological aspects need to be further explored, with particular attention paid to the design of new excellent fluorescent probes. Here, we have demonstrated that bright and biocompatible folic acid-derived carbon nanodots (FA CNDs) may be successfully applied as fluorescent markers in one- and two-photon imaging of bioinspired myelin figures (MFs). Structural and optical properties of these new FA CNDs were first extensively characterized; they revealed remarkable fluorescence performance in linear and non-linear excitation regimes, justifying further applications. Then, confocal fluorescence microscopy and two-photon excited fluorescence microscopy were used to investigate a three-dimensional distribution of FA CNDs within the phospholipid-based MFs. Our results showed that FA CNDs are effective markers for imaging various forms and parts of multilamellar microstructures.
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Affiliation(s)
- Dominika Benkowska-Biernacka
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - Sebastian G Mucha
- Laboratoire Charles Coulomb (L2C), UMR5221, Université de Montpellier (CNRS), 34095 Montpellier, France
| | - Lucyna Firlej
- Laboratoire Charles Coulomb (L2C), UMR5221, Université de Montpellier (CNRS), 34095 Montpellier, France
- Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, United States
| | - Filip Formalik
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Micro, Nano, and Bioprocess Engineering, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - Jean-Louis Bantignies
- Laboratoire Charles Coulomb (L2C), UMR5221, Université de Montpellier (CNRS), 34095 Montpellier, France
| | - Eric Anglaret
- Laboratoire Charles Coulomb (L2C), UMR5221, Université de Montpellier (CNRS), 34095 Montpellier, France
| | - Marek Samoć
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - Katarzyna Matczyszyn
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
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11
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Askar MA, El-Sayyad GS, Guida MS, Khalifa E, Shabana ES, Abdelrahman IY. Amygdalin-folic acid-nanoparticles inhibit the proliferation of breast cancer and enhance the effect of radiotherapy through the modulation of tumor-promoting factors/ immunosuppressive modulators in vitro. BMC Complement Med Ther 2023; 23:162. [PMID: 37210478 DOI: 10.1186/s12906-023-03986-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 04/29/2023] [Indexed: 05/22/2023] Open
Abstract
INTRODUCTION Breast cancer (BC) cells often develop multiple mechanisms of chemo- and radio-resistance during tumor progression, which is the major reason for the failure of breast cancer therapy. Targeted nanomedicines have tremendous therapeutic potential in BC treatment over their free drug counterparts. Searching for chemo- and radio-sensitizers to overcome such resistance is therefore urgently required. The goal of this study is to evaluate and compare the radio-sensitizer efficacy of amygdalin-folic acid nanoparticles (Amy-F) on MCF-7 and MDA-MB-231 cells. MATERIALS AND METHODS The effects of Amy-F on MCF-7 and MDA-MB-231 cell proliferation and IC50 were assessed using MTT assay. The expression of proteins involved in several mechanisms induced by Amy-F in MCF-7 and MDA-MB-231 cells, including growth inhibition, apoptosis, tumor growth regulators, immuno-modulators, and radio-sensitizing activities were evaluated via flow cytometry and ELISA assay. RESULTS Nanoparticles demonstrated sustained Amy-F release properties and apparent selectivity towards BC cells. Cell-based assays revealed that Amy-F markedly suppresses cancer cell growth and improves radiotherapy (RT) through inducing cell cycle arrest (G1 and sub-G1), and increases apoptosis as well as reduces the proliferation of BC by down-regulating mitogen-activated protein kinases (MAPK/P38), iron level (Fe), nitric oxide (NO), and up-regulating the reactive oxygen species level (ROS). Amy-F has also been shown to suppress the expression of the cluster of differentiation (CD4 and CD80), and interfere with the Transforming growth factor beta (TGF- β)/Interferon-gamma (INF-g)/Interleukin-2 (IL-2)/Interleukin-6 (IL-6)/Vascular endothelial growth factor (VEGF) induced suppression in its signaling hub, while up-regulating natural killer group 2D receptor (NKG2D) and CD8 expression. CONCLUSIONS Collectively, the novel Amy-F either alone or in combination with RT abrogated BC proliferation.
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Affiliation(s)
- Mostafa A Askar
- Radiation Biology Department, National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, 11787, Egypt.
| | - Gharieb S El-Sayyad
- Drug Microbiology Lab, Drug Radiation Research Department, National Center for Radiation Research and Technology, (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, 11787, Egypt
| | - Mona S Guida
- Unit of Genetics, University Pediatrics Hospital, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Eman Khalifa
- Oral Biology Department, Faculty of Oral & Dental Medicine, Delta University for Science and Technology, Mansoura, 11152, Egypt
| | - El Shaimaa Shabana
- Unit of Genetics, University Pediatrics Hospital, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Ibrahim Y Abdelrahman
- Radiation Biology Department, National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, 11787, Egypt.
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12
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Chen J, Li F, Gu J, Zhang X, Bartoli M, Domena JB, Zhou Y, Zhang W, Paulino V, C L B Ferreira B, Michael Brejcha N, Luo L, Arduino C, Verde F, Zhang F, Zhang F, Tagliaferro A, Olivier JH, Zhang Y, Leblanc RM. Cancer cells inhibition by cationic carbon dots targeting the cellular nucleus. J Colloid Interface Sci 2023; 637:193-206. [PMID: 36701865 PMCID: PMC9957951 DOI: 10.1016/j.jcis.2023.01.086] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/31/2022] [Accepted: 01/18/2023] [Indexed: 01/22/2023]
Abstract
Nucleus targeting is tremendously important in cancer therapy. Cationic carbon dots (CCDs) are potential nanoparticles which might enter cells and penetrate nuclear membranes. Although some CCDs have been investigated in nucleus targeting and applied in nuclear imaging, the CCDs derived from drugs, that are able to target the nucleus, bind with DNA and inhibit the growth of cancer cells have not been reported. In this project, 1, 2, 4, 5-benzenetetramine (Y15, a focal adhesion kinase inhibitor) derived cationic carbon dots (Y15-CDs) were prepared via a hydrothermal approach utilizing Y15, folic acid and 1,2-ethylenediamine as precursors. Based on the structural, optical, and morphologic characterizations, Y15-CDs possess rich amine groups and nitrogen in structure, an excitation-dependent photoluminescence emission, and a small particle size of 2 to 4 nm. The DNA binding experiments conducted through agarose gel electrophoresis, UV-vis absorption, fluorescence emission, and circular dichroism spectroscopies, prove that Y15-CDs might bind with DNA via electrostatic interactions and partially intercalative binding modes. In addition, the cell imaging and cytotoxicity studies in human foreskin fibroblasts (HFF), prostate cancer (PC3) and osteosarcoma cells (U2OS) indicate the nucleus targeting and anticancer abilities of Y15-CDs. Most interestingly, Y15-CDs exhibit a higher cytotoxicity to cancer cells (PC3 and U2OS) than to normal cells (HFF), inferring that Y15-CDs might be potentially applied in cancer therapy.
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Affiliation(s)
- Jiuyan Chen
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | - Fang Li
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, FL 33136, USA
| | - Jun Gu
- Department of Molecular and Cellular Pharmacology, Miller School of Medicine, University of Miami, FL 33136, USA
| | - Xiao Zhang
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | - Mattia Bartoli
- Department of Applied Science and Technology, Politecnico di Torino, Italy
| | - Justin B Domena
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | - Yiqun Zhou
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA; C-Dots, LLC, Miami, FL 33136, USA
| | - Wei Zhang
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | - Victor Paulino
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | | | - Nicholas Michael Brejcha
- Department of Biochemistry and Molecular Biology, University of Miami, Coral Gables, FL 33146, USA
| | - Liang Luo
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, FL 33136, USA
| | - Chiara Arduino
- Department of Applied Science and Technology, Politecnico di Torino, Italy
| | - Fulvia Verde
- Department of Molecular and Cellular Pharmacology, Miller School of Medicine, University of Miami, FL 33136, USA
| | - Fangliang Zhang
- Department of Molecular and Cellular Pharmacology, Miller School of Medicine, University of Miami, FL 33136, USA
| | - Fuwu Zhang
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | | | | | - Yanbin Zhang
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, FL 33136, USA.
| | - Roger M Leblanc
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA.
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13
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Razaghpour M, Mohammad Ali Malek R, Montazer M, Ramezanpour S. Cellulose cross-linking with folic acid at room via diverse-based coupling reagents attaining multifunctional features. Carbohydr Polym 2023; 302:120376. [PMID: 36604054 DOI: 10.1016/j.carbpol.2022.120376] [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: 09/11/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022]
Abstract
Here, cellulose was cross-linked with folic acid (FA) using tetrafluoroborate (TBTU) and carbodiimide (DIC) as coupling reagents through the pad method at room temperature. The interactions between FA and cellulose were proposed and determined with FTIR, and UV-visible also confirmed with nitrogen content. The newly formed ester peak showed the grafting of FA to the cellulose through esterification followed by cellulose cross-linking. The surface morphology of treated fabrics indicated no significant changes and also remained similar after 5 washing cycles. This had no negative impacts on the various physical and mechanical fabric features. The fabric color was changed with reasonable fastness to laundering and light. More FA showed higher N content indicating more bacterial killing for Pseudomonas aeroginosa (Psa) and Methicillin-Resistant Staphylococcus (MRSA). The reasonable viability of L929 and MCF-7 cells showed for treated fabric with FA below 5 %.
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Affiliation(s)
- Mojgan Razaghpour
- Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), No. 424, Hafez Ave., Tehran, P.O. Box: 15875-4413, Iran
| | - Reza Mohammad Ali Malek
- Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), No. 424, Hafez Ave., Tehran, P.O. Box: 15875-4413, Iran.
| | - Majid Montazer
- Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Functional Fibrous Structures & Environmental Enhancement (FFSEE), No. 424, Hafez Ave., Tehran, P.O. Box: 15875-4413, Iran
| | - Soruor Ramezanpour
- Department of Chemistry, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
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14
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Bustos LF, Judis MA, Vasile FE, Pérez OE. Molecular interactions involved in the complexation process between buffalo whey proteins concentrate and folic acid. Food Chem 2022; 396:133734. [PMID: 35870246 DOI: 10.1016/j.foodchem.2022.133734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 07/08/2022] [Accepted: 07/15/2022] [Indexed: 11/26/2022]
Abstract
Using buffalo whey proteins as carrier agents of sensitive molecules raises an interesting approach allowing adding value and minimizing the pollution impact of this by-product. In this context, this work aims to explore the molecular interactions between buffalo whey proteins concentrate (BWPC) and folic acid (FA). For this purpose, fluorescence, UV and FTIR analysis were performed on aqueous or solid dispersions of a buffalo whey protein concentrate (5 μM) (BWPC), with variable concentrations (0-20 μM) of FA. Fluorescence and absorption data were fitted by Stern-Volmer, Beckett, Förster resonance energy transfer, and sphere-of-action models (R2 > 0.9). Derived results suggest that BWPC strongly bind to FA through non-covalent interactions and form ground-state complexes. Additionally, BWPC improves the photostability of FA against UV radiation, and chemical denaturation negatively affects the binding properties. Obtained results encourage further studies of BWPC as carrier agents, which could promote innovative applications for this under-utilized proteins source.
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Affiliation(s)
- Leandro Fabián Bustos
- Universidad Nacional del Chaco Austral & CONICET - Instituto de investigaciones en procesos tecnológicos avanzados (INIPTA), Comandante Fernández 755, Presidencia Roque Sáenz Peña 3700, Chaco, Argentina; Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica & CONICET-Universidad de Buenos Aires, Laboratorio Interdisciplinario de Dinámica Celular y Nano-Herramientas, Intendente Güiraldes 2160, CP 1428, Buenos Aires, Argentina.
| | - María Alicia Judis
- Universidad Nacional del Chaco Austral & CONICET - Instituto de investigaciones en procesos tecnológicos avanzados (INIPTA), Comandante Fernández 755, Presidencia Roque Sáenz Peña 3700, Chaco, Argentina.
| | - Franco Emanuel Vasile
- Universidad Nacional del Chaco Austral & CONICET - Instituto de investigaciones en procesos tecnológicos avanzados (INIPTA), Comandante Fernández 755, Presidencia Roque Sáenz Peña 3700, Chaco, Argentina.
| | - Oscar Edgardo Pérez
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica & CONICET-Universidad de Buenos Aires, Laboratorio Interdisciplinario de Dinámica Celular y Nano-Herramientas, Intendente Güiraldes 2160, CP 1428, Buenos Aires, Argentina.
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15
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Razaghpour M, Malek RMA, Montazer M, Mallakpour S. Amino-functionalized cross-linked cellulosic fabric with antibacterial, UV protection, and coloring effects using folic acid. Int J Biol Macromol 2022; 219:637-649. [PMID: 35914556 DOI: 10.1016/j.ijbiomac.2022.07.214] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 11/22/2022]
Abstract
The amino-functionalized cellulose with folic acid, via an esterification reaction between carboxylic acid of folic acid and hydroxyl groups of cellulose, can develop multifunctional products with new chemical and physical properties. Folic acid contains two carboxylic groups as well as an amine group that can be used as a coupling agent and provide suitable conditions for coupling hydroxyl-based compounds to cellulose. Also; the multi-functionalized cellulose with folic acid has no effects on the physical and mechanical properties and also has benefits such as antibacterial, UV protection, and wrinkle resistance. The FTIR-ATR and Raman analysis confirmed the amino functionalized-cellulosic fabric via an esterification reaction between cellulose and folic acid. The cell viability of L929 fibroblast (NCBI C161) and MCF-7 (NCBI C135) cancer cells indicated more effectiveness on MCF-7 cancer cells. Therefore; folic acid can be used as a biocompatible natural cross-linker to modify cellulose fabrics for apparel and medical applications.
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Affiliation(s)
- Mojgan Razaghpour
- Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), No. 424, Hafez Ave., P.O. Box: 15875-4413, Tehran, Iran
| | - Reza Mohammad Ali Malek
- Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), No. 424, Hafez Ave., P.O. Box: 15875-4413, Tehran, Iran..
| | - Majid Montazer
- Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Functional Fibrous Structures & Environmental Enhancement (FFSEE), No. 424, Hafez Ave., P.O. Box: 15875-4413, Tehran, Iran
| | - Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran
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16
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Magri VR, Rocha MA, de Matos CS, Petersen PAD, Leroux F, Petrilli HM, Constantino VRL. Folic acid and sodium folate salts: Thermal behavior and spectroscopic (IR, Raman, and solid-state 13C NMR) characterization. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 273:120981. [PMID: 35219274 DOI: 10.1016/j.saa.2022.120981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 01/24/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
Folic acid (FA; vitamin B9) and its associated sodium salts, strongly relevant for many scientific and technological applications - from nutrition to pharmacology and nanomedicine, suffer from a lack of characterization combining experimental and theoretical. In this work, a spectroscopic investigation of FA and its synthesized sodium salts in the form of dianion (Na2HFol) or trianion (Na3Fol) was scrutinized in their solid state. The spectroscopic (infrared, Raman, and solid state 13C-nuclear magnetic resonance) data interpretation was supported by theoretical calculations using the Density Functional Theory (DFT). Additionally, the compounds were characterized by UV-VIS diffuse-reflectance spectroscopy, combined thermal analysis (TG/DTG-DSC) coupled to mass spectrometry, and X-ray diffractometry. The main signatures of each species were identified, as well as the influence of the protonation level on their physicochemical properties. These distinct properties for the three compounds are mainly based on signals assigned to glutamic acid (glutamate) and pterin (neutral or anionic) moieties. This work should help developing new products based on FA or its anionic forms, such as theragnostic/drug delivery systems, supramolecular structures, nanocarbons, or metal complexes.
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Affiliation(s)
- Vagner R Magri
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, CEP 05508-000 São Paulo, SP, Brazil
| | - Michele A Rocha
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, CEP 05508-000 São Paulo, SP, Brazil
| | - Caroline S de Matos
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, CEP 05508-000 São Paulo, SP, Brazil
| | - Philippe A D Petersen
- Departamento de Física de Materiais e Mecânica, Instituto de Física, Universidade de São Paulo, Rua do Matão 1371, CEP 05508-090 São Paulo, SP, Brazil
| | - Fabrice Leroux
- Université Clermont Auvergne, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6296, ICCF, F-63178 Aubiere, France
| | - Helena M Petrilli
- Departamento de Física de Materiais e Mecânica, Instituto de Física, Universidade de São Paulo, Rua do Matão 1371, CEP 05508-090 São Paulo, SP, Brazil
| | - Vera R L Constantino
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, CEP 05508-000 São Paulo, SP, Brazil.
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17
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Khalil M, Haq EA, Dwiranti A, Prasedya ES, Kitamoto Y. Bifunctional folic-conjugated aspartic-modified Fe 3O 4 nanocarriers for efficient targeted anticancer drug delivery. RSC Adv 2022; 12:4961-4971. [PMID: 35425526 PMCID: PMC8981417 DOI: 10.1039/d1ra08776b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 02/03/2022] [Indexed: 01/01/2023] Open
Abstract
Functionalization of nanocarriers has been considered the most promising way of ensuring an accurate and targeted drug delivery system. This study reports the synthesis of bifunctional folic-conjugated aspartic-modified Fe3O4 nanocarriers with an excellent ability to deliver doxorubicin (DOX), an anticancer drug, into the intercellular matrix. Here, the presence of amine and carboxylate groups enables aspartic acid (AA) to be used as an efficient anchoring molecule for the conjugation of folic acid (FA) (EDC-NHS coupling) and DOX (electrostatic interaction). Based on the results, surface functionalization showed little effect on the physicochemical properties of the nanoparticles but significantly influenced both the loading and release efficiency of DOX. This is primarily caused by the steric hindrance effect due to large and bulky FA molecules. Furthermore, in vitro MTT assay of B16-F1 cell lines revealed that FA conjugation was responsible for a significant increase in the cytotoxicity of DOX-loaded nanocarriers, which was also found to be proportional to AA concentration. This high cytotoxicity resulted from an efficient cellular uptake induced by the over-expressed folate receptors and fast pH triggered DOX release inside the target cell. Here, the lowest IC50 value of DOX-loaded nanocarriers was achieved at 2.814 ± 0.449 μg mL-1. Besides, further investigation also showed that the drug-loaded nanocarriers exhibited less or no toxicity against normal cells.
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Affiliation(s)
- Munawar Khalil
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia 16424 Depok West Java Indonesia
| | - Ely Arina Haq
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia 16424 Depok West Java Indonesia
| | - Astari Dwiranti
- Department of Biology, Cellular and Molecular Mechanism in Biological System (CEMBIOS) Research Group, Faculty of Mathematics and Natural Sciences, Universitas Indonesia 16424 Depok West Java Indonesia
| | - Eka Sunarwidhi Prasedya
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Mataram 83125 Lombok West Nusa Tenggara Indonesia
- Bioscience and Biotechnology Research Center, Faculty of Mathematics and Natural Sciences, University of Mataram 83125 Lombok West Nusa Tenggara Indonesia
| | - Yoshitaka Kitamoto
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology Yokohama 226-8503 Japan
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Olmo F, Rodriguez A, Colina A, Heras A. UV/Vis absorption spectroelectrochemistry of folic acid. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-021-05026-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractUV/Vis absorption spectroelectrochemistry is a very promising analytical technique due to the complementary information that is simultaneously obtained from electrochemistry and spectroscopy. In this work, this technique is used in a parallel configuration to study the oxidation of folic acid in alkaline medium. Herein, UV/Vis absorption spectroelectrochemistry has been used to detect both the oxidation products and the folic acid consumed at the electrode/solution interface, allowing us to develop an analytical protocol to quantify vitamin B9 in pharmaceutical tablets. Linear ranges of three orders of magnitude have been achieved in basic medium (pH = 12.9), obtaining high repeatability and low detection limits. The spectroelectrochemical determination of folic acid in pharmaceutical tablets at alkaline pH values is particularly interesting because of the changes that occur in the optical signal during the electrochemical oxidation of FA, providing results with very good figures of merit and demonstrating the utility and versatility of this hyphenated technique, UV/Vis absorption spectroelectrochemistry.
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19
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Regan B, O'Kennedy R, Collins D. Advances in point-of-care testing for cardiovascular diseases. Adv Clin Chem 2021; 104:1-70. [PMID: 34462053 DOI: 10.1016/bs.acc.2020.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Point-of-care testing (POCT) is a specific format of diagnostic testing that is conducted without accompanying infrastructure or sophisticated instrumentation. Traditionally, such rapid sample-to-answer assays provide inferior analytical performances to their laboratory counterparts when measuring cardiac biomarkers. Hence, their potentially broad applicability is somewhat bound by their inability to detect clinically relevant concentrations of cardiac troponin (cTn) in the early stages of myocardial injury. However, the continuous refinement of biorecognition elements, the optimization of detection techniques, and the fabrication of tailored fluid handling systems to manage the sensing process has stimulated the production of commercial assays that can support accelerated diagnostic pathways. This review will present the latest commercial POC assays and examine their impact on clinical decision-making. The individual elements that constitute POC assays will be explored, with an emphasis on aspects that contribute to economically feasible and highly sensitive assays. Furthermore, the prospect of POCT imparting a greater influence on early interventions for medium to high-risk individuals and the potential to re-shape the paradigm of cardiovascular risk assessments will be discussed.
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Affiliation(s)
- Brian Regan
- School of Biotechnology, Dublin City University, Dublin, Ireland.
| | - Richard O'Kennedy
- School of Biotechnology, Dublin City University, Dublin, Ireland; Research Complex, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - David Collins
- School of Biotechnology, Dublin City University, Dublin, Ireland
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20
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Oprica M, Iota M, Daescu M, Fejer SN, Negrila C, Baibarac M. Spectroscopic studies on photodegradation of atorvastatin calcium. Sci Rep 2021; 11:15338. [PMID: 34321518 PMCID: PMC8319406 DOI: 10.1038/s41598-021-94693-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/14/2021] [Indexed: 11/09/2022] Open
Abstract
In this work, the photodegradation process of atorvastatin calcium (ATC) is reported as depending on: (1) the presence and the absence of excipients in the solid state; (2) the chemical interaction of ATC with phosphate buffer (PB) having pH equal to 7 and 8; and (3) hydrolysis reaction of ATC in the presence of aqueous solution of NaOH. The novelty of this work consists in the monitoring of the ATC photodegradation by photoluminescence (PL). The exposure of ATC in solid state to UV light induces the photo-oxygenation reactions in the presence of water vapors and oxygen from air. According to the X-ray photoelectron spectroscopic studies, we demonstrate that the photo-oxygenation reaction leads to photodegradation compounds having a high share of C=O bonds compared to ATC before exposure to UV light. Both in the presence of PB and NaOH, the photodegradation process of ATC is highlighted by a significant decrease in the intensity of the PL and photoluminescence excitation (PLE) spectra. According to PLE spectra, the exposure of ATC in the presence of NaOH to UV light leads to the appearance of a new band in the spectral range 340-370 nm, this belonging to the photodegradation products. Arguments concerning the chemical compounds, that resulted in this last case, are shown by Raman scattering and FTIR spectroscopy.
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Affiliation(s)
- Madalina Oprica
- Laboratory of Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, P.O. Box MG-7, 77125, Magurele, Romania
| | - Miruna Iota
- Laboratory of Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, P.O. Box MG-7, 77125, Magurele, Romania
| | - Monica Daescu
- Laboratory of Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, P.O. Box MG-7, 77125, Magurele, Romania
| | - Szilard N Fejer
- Pro-Vitam Ltd., Muncitorilor Street 16, Sfantu Gheorghe, Romania
| | - Catalin Negrila
- Nanoscale Condensed Matter Laboratory, National Institute of Materials Physics, Atomistilor Street 405A, P.O. Box MG-7, 77125, Magurele, Romania
| | - Mihaela Baibarac
- Laboratory of Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, P.O. Box MG-7, 77125, Magurele, Romania.
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21
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Gandioso A, Rovira A, Shi H, Sadler PJ, Marchán V. Unexpected photoactivation pathways in a folate-receptor-targeted trans-diazido Pt(IV) anticancer pro-drug. Dalton Trans 2021; 49:11828-11834. [PMID: 32815971 DOI: 10.1039/d0dt02577a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A conjugate between a photoactive trans-diazido Pt(iv) pro-drug, trans,trans,trans-[Pt(N3)2(OH)2(py)2], and folic acid has been synthesized and fully characterized by high resolution ESI-MS, NMR and UV-vis spectroscopy. Photoactivation of the Pt-folate conjugate with visible light confirmed the generation of cytotoxic Pt(ii) species capable of binding to guanine nucleobases. Importantly, photoreduction of the Pt(iv) complex triggered the photodecomposition of the folate vector into a p-aminobenzoate-containing fragment and several pterin derivatives, including 6-formylpterin. Besides exhibiting high dark stability in physiological-like conditions, the Pt-folate conjugate was ca. 2× more photocytotoxic towards MCF-7 breast cancer cell line than its parent Pt(iv) complex with a high photoselectivity index (PI > 6.9). The higher photocytotoxicity of the conjugate may be a consequence of its higher cellular accumulation and of the generation of a set of different cytotoxic species, including Pt(ii) photoproducts and several pterin derivatives, which are known to generate ROS.
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Affiliation(s)
- Albert Gandioso
- Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, IBUB, Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona, Spain.
| | - Anna Rovira
- Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, IBUB, Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona, Spain.
| | - Huayun Shi
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Vicente Marchán
- Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, IBUB, Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona, Spain.
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22
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Daescu M, Iota M, Serbschi C, Ion AC, Baibarac M. The Influence of UV Light on Photodegradation of Acetylsalicylic Acid. Int J Mol Sci 2021; 22:4046. [PMID: 33919943 PMCID: PMC8070936 DOI: 10.3390/ijms22084046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/10/2021] [Accepted: 04/12/2021] [Indexed: 01/07/2023] Open
Abstract
Photodegradation of the aqueous solutions of acetylsalicylic acid, in the absence (ASA) and the presence of excipients (ASE), is demonstrated by the photoluminescence (PL). A shift of the PL bands from 342 and 338 nm to 358 and 361-397 nm for ASA and ASE in solid state and as aqueous solutions was reported. By exposure of the solution of ASA 0.3 M to UV light, a decrease in the PL band intensity was highlighted. This behavior was revealed for ASA in the presence of phosphate buffer (PB) having the pH equal to 6.4, 7, and 8 or by the interaction with NaOH 0.3 M. A different behavior was reported in the case of ASE. In the presence of PB, an increase in the intensity of the PL band of ASE simultaneously with a change of the ratio between the intensities of the bands at 361-364 and 394-397 nm was highlighted. The differences between PL spectra of ASA and ASE have their origin in the presence of salicylic acid (SAL). The interaction of ASE with NaOH induces a shift of the PL band at 405-407 nm. Arguments for the reaction of ASA with NaOH are shown by Raman scattering and FTIR spectroscopy.
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Affiliation(s)
- Monica Daescu
- Laboratory of Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, POB MG 7, 077125 Bucharest, Romania; (M.D.); (M.I.)
- Faculty of Applied Chemistry & Material Science, University Politehnica of Bucharest, Gh. Polizu Street 1-7, 011061 Bucharest, Romania;
| | - Miruna Iota
- Laboratory of Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, POB MG 7, 077125 Bucharest, Romania; (M.D.); (M.I.)
| | | | - Alina C. Ion
- Faculty of Applied Chemistry & Material Science, University Politehnica of Bucharest, Gh. Polizu Street 1-7, 011061 Bucharest, Romania;
| | - Mihaela Baibarac
- Laboratory of Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, POB MG 7, 077125 Bucharest, Romania; (M.D.); (M.I.)
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Mariadoss AVA, Saravanakumar K, Sathiyaseelan A, Venkatachalam K, Wang MH. Folic acid functionalized starch encapsulated green synthesized copper oxide nanoparticles for targeted drug delivery in breast cancer therapy. Int J Biol Macromol 2020; 164:2073-2084. [DOI: 10.1016/j.ijbiomac.2020.08.036] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 12/31/2022]
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Molecular nature of breakdown of the folic acid under hydrothermal treatment: a combined experimental and DFT study. Sci Rep 2020; 10:19668. [PMID: 33184321 PMCID: PMC7661697 DOI: 10.1038/s41598-020-76311-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023] Open
Abstract
Using a combination of experimental Raman, FTIR, UV–VIS absorption and emission data, together with the corresponding DFT calculations we propose the mechanism of modification of the folic acid specifically under the hydrothermal treatment at 200 °C. We established that folic acid breaks down into fragments while the pteridine moiety remains intact likely evolving into 6-formylpterin with the latter responsible for the increase in fluorescence emission at 450 nm. The results suggest that hydrothermal approach can be used for production of other purpose-engineered fluorophores.
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25
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Malcomson T, Paterson MJ. Theoretical determination of two-photon absorption in biologically relevant pterin derivatives. Photochem Photobiol Sci 2020; 19:1538-1547. [PMID: 33029609 DOI: 10.1039/d0pp00255k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Given the prevalence of fluorescence spectroscopy in biological systems, and the prevalence of pterin derivatives throughout biological systems, presented here is an assessment of the two-photon absorption spectroscopy as it applies to a range of the most commonly studied pterin derivatives. QR-CAMB3LYP//ccpVTZ calculations suggest that the use of two-photon spectroscopic methods would enable a more capable differentiation between closely related derivatives in comparison to the one-photon spectra, which show minimal qualitative deviation. Study of short tail derivatives shows that, in most cases, two-photon accessible states solely involve the π* LUMO as the particle orbital, with biopterin, neopterin, and 6-(hydroxymethyl)pterin presenting exceptional potential for targetting. Investigation of derivatives in which the tail contains an aromatic ring resulted in the observation of a series of two-photon accessible states involving charge transfer from the tail to the pterin moiety, the cross sections of which are highly dependent on the adoption of a planar geometry. The observation of these states presents a novel method for tracking the substitution of biologically important molecules such as folic acid and 5-methenyltetrahydrofolylpolyglutamate.
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Affiliation(s)
- Thomas Malcomson
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - Martin J Paterson
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
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Correia AR, Sampaio I, Comparetti EJ, Vieira NCS, Zucolotto V. Optimized PAH/Folic acid layer-by-layer films as an electrochemical biosensor for the detection of folate receptors. Bioelectrochemistry 2020; 137:107685. [PMID: 33120295 DOI: 10.1016/j.bioelechem.2020.107685] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/29/2020] [Accepted: 10/06/2020] [Indexed: 12/11/2022]
Abstract
Folate receptor alpha (FR-α) is a glycoprotein overexpressed in tumor cell surfaces, especially in gynecologic cancers, and can be used as a biomarker for diagnostics. Currently, FRα is quantified by positron emission tomography (PET) or fluorescence imaging techniques. However, these methods are costly and time-consuming. We report on the development of an electrochemical biosensor for FRα detection based on the use of nanostructured layer-by-layer (LbL) films as modified electrodes. Multilayer films were deposited on indium tin oxide (ITO) electrodes by the alternately assembling of positively charged polyallylamine hydrochloride (PAH) and negatively charged folic acid (FA), used as the biorecognition element. UV-vis and FTIR spectroscopies revealed the successful PAH and FA adsorption on ITO. Devices performance was evaluated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The [PAH/FA] films presented a good reproducibility (RSD of 1.12%) and stability when stored in the Tris-HCl solution (RSD 6.7%). The biosensor electrochemical response exhibited a linear relationship with FRα concentration in the range from 10 to 40 nM. The limit of detection reached for CV and EIS measurements were 0.7 and 1.5 nM, respectively. As a proof-of-concept, we show that the devices can differenciate tumor cells from healthy cell, showing an excellent selectivity. The biosensor device based on [PAH/FA] films represents a promising strategy for a simple, rapid, and low-cost cancer diagnosis through FRα quantification on the surface of cancer cells.
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Affiliation(s)
- Abilene Rodrigues Correia
- GNano - Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil
| | - Isabella Sampaio
- GNano - Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil.
| | - Edson José Comparetti
- GNano - Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil
| | - Nirton Cristi Silva Vieira
- GNano - Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil; Institute of Science and Technology, Federal University of São Paulo, 12231-280 São José dos Campos, SP, Brazil
| | - Valtencir Zucolotto
- GNano - Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil
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