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Prakash A, Yadav S, Saxena PS, Srivastava A. Development of folate-conjugated polypyrrole nanoparticles incorporated with nitrogen-doped carbon quantum dots for targeted bioimaging and photothermal therapy. Talanta 2024; 278:126528. [PMID: 38996560 DOI: 10.1016/j.talanta.2024.126528] [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: 03/09/2024] [Revised: 06/18/2024] [Accepted: 07/07/2024] [Indexed: 07/14/2024]
Abstract
PPy nanoparticles are widely employed as PTT agents, because of their exceptional near-infrared absorption properties. Nonetheless, the efficacy of PTT with PPy nanoparticles is hindered by a challenge, specifically, a lack of precise targeting. In this study, a PTT imaging agent was developed by combining NCQDs having bright green fluorescent properties with PPy nanoparticles along with the masking of folic acid to overcome the challenge of targeting. The synthesized PPy:NCQDs:FA nanocomposite, characterized by extraordinary photothermal property, was utilized for imaging of folate receptor positive (FA+) MCF-7 cancer cells through the emission of green fluorescence by NCQDs incorporated within the nanocomposite. Additionally, these nanoparticles demonstrated a good level of cell viability, exceeding 82 %, even at a concentration of 600 μg mL-1. Even the in vivo toxicity inspection of the nanocomposite exemplified no observed acute toxicity at experimental dosages of 1 and 3 mg per kg body weight. By subjecting MCF-7 cells, inoculated with 100 μg mL-1 of nanocomposite, to NIR laser irradiation for 5 min, a significant decline in cell viability was witnessed, establishing the photothermal therapeutic potency of the nanocomposite. The death of cancer cells induced by nanocomposite was verified through MTT assay, imaging of cells by NCQDs alone, with nanocomposite, and by live/dead cell Calcein AM/PI staining assay. Quantification of induced apoptosis post-laser treatment is conducted through staining with Annexin V-FITC/PI. These findings establish potential use of PPy:NCQDs:FA nanocomposite as versatile theranostic agents, capable of targeted bioimaging and treatment for cancer cells exhibiting folate receptors.
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Affiliation(s)
- Aakriti Prakash
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sujit Yadav
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Preeti S Saxena
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Anchal Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
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Alnuwaiser MA, Rabia M. Simple potentiometry and cyclic voltammetry techniques for sensing Hg 2+ ions in water using a promising flower-shaped WS 2-WO 3/poly-2-aminobenzene-1-thiol nanocomposite thin film electrode. RSC Adv 2024; 14:3878-3887. [PMID: 38283592 PMCID: PMC10811525 DOI: 10.1039/d3ra07932e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 01/15/2024] [Indexed: 01/30/2024] Open
Abstract
A highly promising flower-shaped WS2-WO3/poly-2-aminobenzene-1-thiol (P2ABT) nanocomposite was successfully synthesized via a reaction involving 2-aminobenzene-1-thiol, Na2WO4, and K2S2O8 as oxidants. The WS2-WO3/P2ABT nanocomposite demonstrated remarkable potential as a sensor for detecting harmful Hg2+ ions in aqueous solutions. The sensing behavior was evaluated over a wide concentration range, from 10-6 to 10-1 M, using a simple potentiometric study on a two-electrode cell. The calibration curve yielded an excellent Nernstian slope of 33.0 mV decade-1. To further validate the sensing capabilities, cyclic voltammetry was employed, and the results showed an increasing trend in the cyclic voltammetry curve as the Hg2+ concentration increased from 10-6 to 10-1 M with an evaluated sensitivity of 2.4 μA M-1. The WS2-WO3/P2ABT nanocomposite sensor exhibited exceptional selectivity for detecting Hg2+ ions, as no significant effects were observed from other interfering ions such as Zn2+, Ni2+, Ca2+, Mg2+, Al3+, and K+ ions in the cyclic voltammetry tests. Furthermore, the sensor was tested on a natural sample that was free of Hg2+ ions, and the cyclic voltammetry curves did not produce any characteristic peaks, confirming the sensor's specificity for Hg2+ detection. The sensor's cost-effectiveness and ease of fabrication present the potential for developing a simple and practical sensor for detecting highly poisonous ions in aqueous solutions.
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Affiliation(s)
- Maha Abdallah Alnuwaiser
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University PO Box 84428 Riyadh 11671 Saudi Arabia
| | - Mohamed Rabia
- Nanomaterials Science Research Laboratory, Chemistry Department, Faculty of Science, Beni-Suef University Beni-Suef 62514 Egypt
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Ugraskan V, Bilgi M, Yazici O. Investigation of electrical conductivity and radical scavenging activity of boron phosphate filled polypyrrole nanocomposites. POLYM-PLAST TECH MAT 2023. [DOI: 10.1080/25740881.2022.2100793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Volkan Ugraskan
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, TURKEY
| | - Mesut Bilgi
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, TURKEY
| | - Ozlem Yazici
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, TURKEY
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Kamran M, Shah AUHA, Rahman G, Bilal S, Röse P. Investigation of Alumina-Doped Prunus domestica Gum Grafted Polyaniline Epoxy Resin for Corrosion Protection Coatings for Mild Steel and Stainless Steel. Polymers (Basel) 2022; 14:polym14235128. [PMID: 36501523 PMCID: PMC9736945 DOI: 10.3390/polym14235128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022] Open
Abstract
Eco-friendly inhibitors have attracted considerable interest due to the increasing environmental issues caused by the extensive use of hazardous corrosion inhibitors. In this paper, environmentally friendly PDG-g-PANI/Al2O3 composites were prepared by a low-cost inverse emulsion polymerization for corrosion inhibition of mild steel (MS) and stainless steel (SS). The PDG-g-PANI/Al2O3 composites were characterized by different techniques such as X-ray diffraction (XRD), UV/Vis, and FTIR spectroscopy. XRD measurements show that the PDG-g-PANI/Al2O3 composite is mostly amorphous and scanning electron micrographs (SEM) reveal a uniform distribution of Al2O3 on the surface of the PDG-g-PANI matrix. The composite was applied as a corrosion inhibitor on mild steel (MS) and stainless steel (SS), and its efficiency was investigated by potentiodynamic polarization measurement in a 3.5% NaCl and 1 M H2SO4 solution. Corrosion kinetic parameters obtained from Tafel evaluation show that the PDG-g-PANI/Al2O3 composites protect the surface of MS and SS with inhibition efficiencies of 92.3% and 51.9% in 3.5% NaCl solution, which is notably higher than those obtained with untreated epoxy resin (89.3% and 99.5%). In particular, the mixture of epoxy/PDG-g-PANI/Al2O3 shows the best performance with an inhibition efficiency up to 99.9% on MS and SS. An equivalent good inhibition efficiency was obtained for the composite for 1M H2SO4. Analysis of activation energy, formation enthalpy, and entropy values suggest that the epoxy/PDG-g-PANI/Al2O3 coating is thermodynamically favorable for corrosion protection of MS and exhibits long-lasting stability.
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Affiliation(s)
- Muhammad Kamran
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Khyber Pakhtunkhwa, Pakistan
| | - Anwar ul Haq Ali Shah
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Khyber Pakhtunkhwa, Pakistan
- Correspondence: (A.u.H.A.S.); (P.R.)
| | - Gul Rahman
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Khyber Pakhtunkhwa, Pakistan
| | - Salma Bilal
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Khyber Pakhtunkhwa, Pakistan
| | - Philipp Röse
- Karlsruhe Institute of Technology (KIT), Institute for Applied Materials-Electrochemical Technologies (IAM-ET), 76131 Karlsruhe, Germany
- Correspondence: (A.u.H.A.S.); (P.R.)
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Rethi L, Mutalik C, Rethi L, Chiang WH, Lee HL, Pan WY, Yang TS, Chiou JF, Chen YJ, Chuang EY, Lu LS. Molecularly Targeted Photothermal Ablation of Epidermal Growth Factor Receptor-Expressing Cancer Cells with a Polypyrrole-Iron Oxide-Afatinib Nanocomposite. Cancers (Basel) 2022; 14:cancers14205043. [PMID: 36291827 PMCID: PMC9599920 DOI: 10.3390/cancers14205043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 11/28/2022] Open
Abstract
Simple Summary In this manuscript, we describe the design and synthesis of a nanocomposite containing afatinib, polypyrrole, and iron oxide (PIA-NC) to molecularly target epidermal growth factor receptor (EGFR)-overexpressing cancer cells for photothermal conversion. In addition to physical and chemical characterization, we also showed that PIA-NC induces selective reactive oxygen species surge and apoptosis in response to sublethal near-infrared light only in EGFR-overexpressing cancer cells, not in EGFR-negative fibroblasts. The work demonstrates the feasibility of photothermal therapy with cellular precision. Abstract Near-infrared–photothermal therapy (NIR-PTT) is a potential modality for cancer treatment. Directing photothermal effects specifically to cancer cells may enhance the therapeutic index for the best treatment outcome. While epithelial growth factor receptor (EGFR) is commonly overexpressed/genetically altered in human malignancy, it remains unknown whether targeting EGFR with tyrosine kinase inhibitor (TKI)-conjugated nanoparticles may direct NIR-PTT to cancers with cellular precision. In the present study, we tested this possibility through the fabrication of a polypyrrole–iron oxide–afatinib nanocomposite (PIA-NC). In the PIA-NC, a biocompatible and photothermally conductive polymer (polypyrrole) was conjugated to a TKI (afatinib) that binds to overexpressed wild-type EGFR without overt cytotoxicity. A Fenton catalyst (iron oxide) was further encapsulated in the NC to drive the intracellular ROS surge upon heat activation. Diverse physical and chemical characterization experiments were conducted. Particle internalization, cytotoxicity, ROS production, and apoptosis in EGFR-positive and -negative cell lines were investigated in the presence and absence of NIR. We found that the PIA-NCs were stable with a size of 243 nm and a zeta potential of +35 mV. These PIA-NCs were readily internalized close to the cell membrane by all types of cells used in the study. The Fourier transform infrared spectra showed 3295 cm−1 peaks; substantial O–H stretching was seen, with significant C=C stretching at 1637 cm−1; and a modest appearance of C–O–H bending at 1444 cm−1 confirmed the chemical conjugation of afatinib but not iron oxide to the NC. At a NIR-PTT energy level that has a minimal cytotoxic effect, PIA-NC significantly sensitizes EGFR-overexpressing A549 lung cancer cells to NIR-PTT-induced cytotoxicity at a rate of 70%, but in EGFR-negative 3T3 fibroblasts the rate was 30%. Within 1 min of NIR-PTT, a surge of intracellular ROS was found in PIA-NC-treated A549 cells. This was followed by early induction of cellular apoptosis for 54 ± 0.081% of A549 cells. The number of viable cells was less than a quarter of a percent. Viability levels of A549 cells that had been treated with NIR or PIA were only 50 ± 0.216% and 80 ± 0.216%, respectively. Only 10 ± 0.816% of NIH3T3 cells had undergone necrosis, meaning that 90 ± 0.124% were alive. Viability levels were 65 ± 0.081% and 81 ± 0.2%, respectively, when only NIR and PIA were used. PIA binding was effective against A549 cells but not against NIH3T3 cells. The outcome revealed that higher levels of NC + NIR exposure caused cancer cells to produce more ROS. In summary, our findings proved that a molecularly targeted NC provides an orchestrated platform for cancer cell-specific delivery of NIR-PTT. The geometric proximity design indicates a novel approach to minimizing the off-target biological effects of NIR-PTT. The potential of PIA-NC to be further developed into real-world application warrants further investigation.
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Affiliation(s)
- Lekshmi Rethi
- International Ph.D. Program in Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
| | - Chinmaya Mutalik
- International Ph.D. Program in Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
| | - Lekha Rethi
- International Ph.D. Program in Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei 11031, Taiwan
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Hsin-Lun Lee
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
- Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan
- Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Wen-Yu Pan
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
- Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Tze-Sen Yang
- Graduate Institute of Biomedical Opto Mechatronics, Taipei Medical University, Taipei 11031, Taiwan
- School of Dental Technology, Taipei Medical University, Taipei 11031, Taiwan
- Research Center of Biomedical Device, Taipei Medical University, Taipei 11031, Taiwan
| | - Jeng-Fong Chiou
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
- Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan
- Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yin-Ju Chen
- International Ph.D. Program in Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei 11031, Taiwan
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Department of Medical Research, Taipei Medical University Hospital, Taipei 11031, Taiwan
| | - Er-Yuan Chuang
- International Ph.D. Program in Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei 11031, Taiwan
- Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Hospital, 111, Section 3, Xinglong Road, Wenshan District, Taipei 11696, Taiwan
- Correspondence: (E.-Y.C.); (L.-S.L.)
| | - Long-Sheng Lu
- International Ph.D. Program in Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei 11031, Taiwan
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Department of Medical Research, Taipei Medical University Hospital, Taipei 11031, Taiwan
- Center for Cell Therapy, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
- International Ph.D. Program for Cell Therapy and Regeneration, Taipei Medical University, Taipei 11031, Taiwan
- TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Correspondence: (E.-Y.C.); (L.-S.L.)
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