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Ma J, Li J, Chen X, Ma Y. Ojeok-san enhances platinum sensitivity in ovarian cancer by regulating adipocyte paracrine IGF1 secretion. Adipocyte 2024; 13:2282566. [PMID: 37993991 PMCID: PMC10761029 DOI: 10.1080/21623945.2023.2282566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 11/06/2023] [Indexed: 11/24/2023] Open
Abstract
BACKGROUND Platinum is a commonly used drug for ovarian cancer (OvCa) treatment, but drug resistance limits its clinical application. This study intended to delineate the effects of adipocytes on platinum resistance in OvCa. METHODS OvCa cells were maintained in the adipocyte-conditioned medium. Cell viability and apoptosis were detected by CCK-8 and flow cytometry, separately. Proliferation and apoptosis-related protein expression were assayed by western blot. The IC50 values of cisplatin and carboplatin were determined using CCK-8. IGF1 secretion and expression were assayed via ELISA and western blot, respectively. A xenograft model was established, and pathological changes were detected by H&E staining. Proliferation and apoptosis-associated protein expression was assessed via IHC. RESULTS Adipocytes promoted the viability and repressed cell apoptosis in OvCa, as well as enhancing platinum resistance, while the addition of IGF-1 R inhibitor reversed the effects of adipocytes on proliferation, apoptosis, and drug resistance of OvCa cells. Treatment with different concentrations of Ojeok-san (OJS) inhibited the adipocyte-induced platinum resistance in OvCa cells by suppressing IGF1. The combined treatment of OJS and cisplatin significantly inhibited tumour growth in vivo with good mouse tolerance. CONCLUSION In summary, OJS inhibited OvCa proliferation and platinum resistance by suppressing adipocyte paracrine IGF1 secretion.
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Affiliation(s)
- Jiong Ma
- Department of Gynecology, The Second Affiliated Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - Junyan Li
- Department of Gynecology, The Second Affiliated Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - Xuejun Chen
- Department of Gynecology, The Second Affiliated Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - Yanyan Ma
- Department of Gynecology, The Second Affiliated Hospital, Zhejiang University, School of Medicine, Hangzhou, China
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Ahlstedt O, Akola J. Hydrogen evolution descriptors of 55-atom PtNi nanoclusters and interaction with graphite. J Phys Condens Matter 2024. [PMID: 38670082 DOI: 10.1088/1361-648x/ad4432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Density functional simulations have been performed for PtnNi55-nclusters (n = 0,12,20,28,42,55) to investigate their catalytic properties for the hydrogen evolution reaction (HER). Starting from the icosahedral Pt12Ni43, hydrogen adsorption energetics and electronic d-band descriptors indicate HER activity comparable to that of pure Pt55(distorted reduced core structure). The PtNi clusters accommodate a large number of adsorbed hydrogen before reaching a saturated coverage, corresponding to 3-4 H atoms per icosahedron facet (in total ∼70-80). The differential adsorption free energies are well within the window of |∆GH| < 0.1 eV which is considered optimal for HER. The electronic descriptors show similarities with the platinum d-band, although the uncovered PtNi clusters are magnetic. Increasing hydrogen coverage suppresses magnetism and depletes electron density, resulting in expansion of the PtNi clusters. For a single H atom, the adsorption free energy varies between -0.32 (Pt12Ni43) and -0.59 eV (Pt55). The most stable adsorption site is Pt-Pt bridge for Pt-rich compositions and a hollow site surrounded by three Ni for Pt-poor compositions. A hydrogen molecule dissociates spontaneously on the Pt-rich clusters. The above HER activity predictions can be extended to PtNi on carbon support as the interaction with a graphite model structure (w/o vacancy defect) results in minor changes in the cluster properties only. The cluster-surface interaction is the strongest for Pt55due to its large facing facet and associated van der Waals forces.
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Affiliation(s)
- Olli Ahlstedt
- Computational Physics Laboratory, Tampere University, P.O. Box 692, Tampere, Pirkanmaa, 33014, FINLAND
| | - Jaakko Akola
- Department of Physics, Norges teknisk-naturvitenskapelige universitet, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, NORWAY
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3
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Li KH, Zhao YY, Cheng HL, Yang JJ, Chien CY. Ototoxicity among cisplatin, carboplatin, and oxaliplatin in zebrafish model. Environ Toxicol 2024. [PMID: 38661261 DOI: 10.1002/tox.24285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/15/2024] [Accepted: 03/31/2024] [Indexed: 04/26/2024]
Abstract
Platinum-based antineoplastic drugs, including cisplatin, carboplatin, and oxaliplatin, are widely used in the treatment of various cancers. Ototoxicity is a common adverse effect of platinum-based drugs. Ototoxicity leads to irreversible hearing impairment. We hypothesize that different platinum-based drugs exhibit varying ototoxic concentrations, time effects, and ototoxic mechanisms. We tested this hypothesis by using a zebrafish model (pvalb3b: TagGFP) to assess the viability of hair cells collected from zebrafish larvae. Cisplatin, carboplatin, and oxaliplatin were administered at dosages of 100, 200, or 400 μM, and the ototoxic effects of these drugs were assessed 1, 2, or 3 h after administration. Fm4-64 and a TUNEL assay were used to label the membranes of living hair cells and to detect cell apoptosis, respectively. We observed that >50% of hair cells were damaged at 1 h after cisplatin (100 μM) exposure, and this ototoxic effect increased at higher dosages and over time. Owing to the smaller ototoxic effects of carboplatin and oxaliplatin, we conducted higher-strength and longer-duration experiments with these drugs. Neither carboplatin nor oxaliplatin was obviously ototoxic, even at 1600 μM and after 6 h. Moreover, only cisplatin damaged the membranes of the hair cells. Cell apoptosis and significantly increased antioxidant gene expression were observed in only the cisplatin group. In conclusion, cisplatin significantly damages sensory hair cells and has notable dosage and time effects. Carboplatin and oxaliplatin are less ototoxic than cisplatin, likely due to having different ototoxic mechanisms than cisplatin.
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Affiliation(s)
- Kuan-Hui Li
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Otorhinolaryngology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Yu Zhao
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan
| | - Hsin-Lin Cheng
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Jiann-Jou Yang
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chen-Yu Chien
- Department of Otorhinolaryngology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Otorhinolaryngology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Otorhinolaryngology, Kaohsiung Municipal Siaogang Hospital, Kaohsiung, Taiwan
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Nergis B, Bauer S, Jin X, Horak L, Schneider R, Holy V, Seemann K, Ulrich S, Baumbach T. Structural and Morphological Studies of Pt in the As-Grown and Encapsulated States and Dependency on Film Thickness. Nanomaterials (Basel) 2024; 14:725. [PMID: 38668219 PMCID: PMC11054750 DOI: 10.3390/nano14080725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/29/2024]
Abstract
The morphology and crystal structure of Pt films grown by pulsed laser deposition (PLD) on yttria-stabilized zirconia (YSZ)at high temperatures Tg = 900 °C was studied for four different film thicknesses varying between 10 and 70 nm. During the subsequent growth of the capping layer, the thermal stability of the Pt was strongly influenced by the Pt film's thickness. Furthermore, these later affected the film morphology, the crystal structure and hillocks size, and distribution during subsequent growth at Tg = 900 °C for a long duration. The modifications in the morphology as well as in the structure of the Pt film without a capping layer, named also as the as-grown and encapsulated layers in the bilayer system, were examined by a combination of microscopic and scattering methods. The increase in the thickness of the deposited Pt film brought three competitive phenomena into occurrence, such as 3D-2D morphological transition, dewetting, and hillock formation. The degree of coverage, film continuity, and the crystal quality of the Pt film were significantly improved by increasing the deposition time. An optimum Pt film thickness of 70 nm was found to be suitable for obtaining a hillock-free Pt bottom electrode which also withstood the dewetting phenomena revealed during the subsequent growth of capping layers. This achievement is crucial for the deposition of functional bottom electrodes in ferroelectric and multiferroic heterostructure systems.
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Affiliation(s)
- Berkin Nergis
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (B.N.); (T.B.)
| | - Sondes Bauer
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (B.N.); (T.B.)
| | - Xiaowei Jin
- Laboratory for Electron Microscopy, Karlsruhe Institute of Technology, Engesserstr. 7, 76131 Karlsruhe, Germany; (X.J.); (R.S.)
| | - Lukas Horak
- Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic; (L.H.); (V.H.)
| | - Reinhard Schneider
- Laboratory for Electron Microscopy, Karlsruhe Institute of Technology, Engesserstr. 7, 76131 Karlsruhe, Germany; (X.J.); (R.S.)
| | - Vaclav Holy
- Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic; (L.H.); (V.H.)
| | - Klaus Seemann
- Institute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (K.S.); (S.U.)
| | - Sven Ulrich
- Institute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (K.S.); (S.U.)
| | - Tilo Baumbach
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (B.N.); (T.B.)
- Laboratory for Applications of Synchrotron Radiation, Karlsruhe Institute of Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany
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García-Martínez F, Turco E, Schiller F, Ortega JE. CO and O 2 Interaction with Kinked Pt Surfaces. ACS Catal 2024; 14:6319-6327. [PMID: 38660607 PMCID: PMC11037391 DOI: 10.1021/acscatal.4c00435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/20/2024] [Accepted: 03/20/2024] [Indexed: 04/26/2024]
Abstract
We investigate the chemical interaction of carbon monoxide (CO) and oxygen (O2) with kink atoms on steps of platinum crystal surfaces using a specially designed Pt curved sample. We aim at describing the fundamental stages of the CO oxidation reaction, i.e., CO-covered/poisoned stage and O-covered/active stage, at the poorly known kinked Pt facets by probing CO uptake/saturation and O2 saturation, respectively. Based on the systematic analysis that the curved surface allows, and using high-resolution X-ray photoemission, a diversity of terrace and step/kink species are straightforwardly identified and accurately quantified, defining a smooth structural and chemical variation across different crystal planes. In the CO-saturated case, we observe a preferential adsorption at step edges, where the CO coverage reaches a CO molecule per step Pt atom, significantly higher than their close-packed analogous steps with straight terrace termination. For the O-saturated surface, a significantly higher O coverage is observed in kinked planes compared to the Pt(111) surface. While the strong adsorption of CO at the kinked edges points toward a higher ignition temperature of the CO oxidation at kinks as compared to terraces, the large O coverage at steps may lead to an increased reactivity of kinked surfaces during the active stage of the CO oxidation.
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Affiliation(s)
- Fernando García-Martínez
- Centro
de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizábal 5, San Sebastián 20018, Spain
| | - Elia Turco
- Centro
de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizábal 5, San Sebastián 20018, Spain
| | - Frederik Schiller
- Centro
de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizábal 5, San Sebastián 20018, Spain
| | - J. Enrique Ortega
- Centro
de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizábal 5, San Sebastián 20018, Spain
- Departamento
Física Aplicada, Universidad del
País Vasco, San Sebastián 20018, Spain
- Donostia
International Physics Centre, Manuel Lardizábal 4, San Sebastián 20018, Spain
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6
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Meng M, Liu X, Liang X, Chen X, Li Y. Cost-effectiveness analysis of durvalumab, tremelimumab, and etoposide- platinum in first-line treatment of extensive-stage small cell lung cancer. Medicine (Baltimore) 2024; 103:e37836. [PMID: 38640325 PMCID: PMC11029999 DOI: 10.1097/md.0000000000037836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 04/21/2024] Open
Abstract
BACKGROUND Durvalumab plus etoposide-platinum (DEP) showed sustained overall survival improvements in patients with extensive-stage small-cell lung cancer (ES-SCLC) compared to etoposide-platinum (EP), but adding tremelimumab to DEP (DTEP) did not significantly improve outcomes. A third-party payer perspective is taken here to evaluate the cost-effectiveness of DTEP, DEP, and EP for ES-SCLC. METHODS The cost-effectiveness was evaluated by partitioning survival models into 3 mutually exclusive health states. In this model, clinical characteristics and outcomes were obtained from the CASPIAN. Model robustness was evaluated through 1-way deterministic and probabilistic sensitivity analyses. Outcome measurements included costs, quality-adjusted life-years (QALYs), incremental cost-effectiveness ratio, life-years, incremental net health benefit, and incremental net monetary benefit. The analysis was conducted with a 10-year lifetime horizon in a United States setting. RESULTS Compared with EP, DEP, and DTEP were associated with an increment of 0.480 and 0.313 life-years, and an increment of 0.247 and 0.165 QALYs, as well as a $139,788 and $170,331 increase in cost per patient. The corresponding ICERs were $565,807/QALY and $1033,456/QALY, respectively. The incremental net health benefit and incremental net monetary benefit of DEP or DTEP were -0.685 QALYs and -$102,729, or -0.971 QALYs and -$145,608 at a willingness to pay threshold of $150,000/QALY, respectively. Compared with DTEP, DEP was dominated. DTEP and DEP were 100% unlikely to be cost-effective if the willingness to pay threshold was $150,000/QALY. DEP was cost-effective compared to EP when durvalumab was priced below $0.994/mg. Compared with EP, DEP, and DTEP were unlikely to be considered cost-effective across all subgroups. CONCLUSION DEP and DTEP were not cost-effective options in the first-line treatment for ES-SCLC compared with EP, from the third-party payer perspective in the United States. Compared with DTEP, DEP was dominated.
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Affiliation(s)
- Mingyu Meng
- Department of Pharmacy, Guangxi Academy of Medical Sciences and the People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, People’s Republic of China
| | - Xiaoxia Liu
- Department of Pharmacy, Guangxi Academy of Medical Sciences and the People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, People’s Republic of China
| | - Xueyan Liang
- Phase 1 Clinical Trial Laboratory, Guangxi Academy of Medical Sciences and the People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, People’s Republic of China
| | - Xiaoyu Chen
- Department of Pharmacy, Guangxi Academy of Medical Sciences and the People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, People’s Republic of China
- Phase 1 Clinical Trial Laboratory, Guangxi Academy of Medical Sciences and the People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, People’s Republic of China
| | - Yan Li
- Department of Pharmacy, Guangxi Academy of Medical Sciences and the People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, People’s Republic of China
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Ribeiro JYC, Santos GOS, Dória AR, Requena I, Lanza MRV, Salazar-Banda GR, Eguiluz KIB, Lobato J, Rodrigo MA. Improved Operation of Chloralkaline Reversible Cells with Mixed Metal Oxide Electrodes Made Using Microwaves. Nanomaterials (Basel) 2024; 14:693. [PMID: 38668187 PMCID: PMC11054361 DOI: 10.3390/nano14080693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 04/29/2024]
Abstract
This study focuses on the synthesis of mixed metal oxide anodes (MMOs) with the composition Ti/RuO2Sb2O4Ptx (where x = 0, 5, 10 mol) using hybrid microwave irradiation heating. The synthesized electrodes were characterized using scanning electron microscopy, X-ray energy-dispersive analysis, X-ray diffraction, cyclic voltammetry, and electrochemical impedance spectroscopy. These electrodes were then evaluated in both bulk electrolytic and fuel cell tests within a reversible chloralkaline electrochemical cell. The configurations using the electrodes Ti/(RuO2)0.7-(Sb2O4)0.3 and Ti/(RuO2)66.5-(Sb2O4)28.5-Pt5 presented lower onset potential for oxygen and chlorine evolution reactions and reduced resistance to charge transfer compared to the Ti/(RuO2)63-(Sb2O4)27-Pt10 variant. These electrodes demonstrated notable performance in reversible electrochemical cells, achieving Coulombic efficiencies of up to 60% when operating in the electrolytic mode at current densities of 150 mA cm-2. They also reached maximum power densities of 1.2 mW cm-2 in the fuel cell. In both scenarios, the presence of platinum in the MMO coating positively influenced the process. Furthermore, a significant challenge encountered was crossover through the membranes, primarily associated with gaseous Cl2. This study advances our understanding of reversible electrochemical cells and presents possibilities for further exploration and refinement. It demonstrated that the synergy of innovative electrode synthesis strategies and electrochemical engineering can lead to promising and sustainable technologies for energy conversion.
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Affiliation(s)
- Jamylle Y. C. Ribeiro
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju 49032-490, SE, Brazil; (J.Y.C.R.); (A.R.D.); (G.R.S.-B.); (K.I.B.E.)
- Graduate Program in Processes Engineering (PEP), Tiradentes University, Aracaju 49032-490, SE, Brazil
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, 13004 Ciudad Real, Spain; (G.O.S.S.); (I.R.)
| | - Gessica O. S. Santos
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, 13004 Ciudad Real, Spain; (G.O.S.S.); (I.R.)
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos 13566-590, SP, Brazil;
| | - Aline R. Dória
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju 49032-490, SE, Brazil; (J.Y.C.R.); (A.R.D.); (G.R.S.-B.); (K.I.B.E.)
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos 13566-590, SP, Brazil;
| | - Iñaki Requena
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, 13004 Ciudad Real, Spain; (G.O.S.S.); (I.R.)
| | - Marcos R. V. Lanza
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos 13566-590, SP, Brazil;
| | - Giancarlo R. Salazar-Banda
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju 49032-490, SE, Brazil; (J.Y.C.R.); (A.R.D.); (G.R.S.-B.); (K.I.B.E.)
- Graduate Program in Processes Engineering (PEP), Tiradentes University, Aracaju 49032-490, SE, Brazil
| | - Katlin I. B. Eguiluz
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju 49032-490, SE, Brazil; (J.Y.C.R.); (A.R.D.); (G.R.S.-B.); (K.I.B.E.)
- Graduate Program in Processes Engineering (PEP), Tiradentes University, Aracaju 49032-490, SE, Brazil
| | - Justo Lobato
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, 13004 Ciudad Real, Spain; (G.O.S.S.); (I.R.)
| | - Manuel A. Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, 13004 Ciudad Real, Spain; (G.O.S.S.); (I.R.)
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Karlsson JOG, Jynge P. Manganese- and Platinum-Driven Oxidative and Nitrosative Stress in Oxaliplatin-Associated CIPN with Special Reference to Ca 4Mn(DPDP) 5, MnDPDP and DPDP. Int J Mol Sci 2024; 25:4347. [PMID: 38673932 PMCID: PMC11050347 DOI: 10.3390/ijms25084347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Platinum-containing chemotherapeutic drugs are efficacious in many forms of cancer but are dose-restricted by serious side effects, of which peripheral neuropathy induced by oxidative-nitrosative-stress-mediated chain reactions is most disturbing. Recently, hope has been raised regarding the catalytic antioxidants mangafodipir (MnDPDP) and calmangafodipir [Ca4Mn(DPDP)5; PledOx®], which by mimicking mitochondrial manganese superoxide dismutase (MnSOD) may be expected to overcome oxaliplatin-associated chemotherapy-induced peripheral neuropathy (CIPN). Unfortunately, two recent phase III studies (POLAR A and M trials) applying Ca4Mn(DPDP)5 in colorectal cancer (CRC) patients receiving multiple cycles of FOLFOX6 (5-FU + oxaliplatin) failed to demonstrate efficacy. Instead of an anticipated 50% reduction in the incidence of CIPN in patients co-treated with Ca4Mn(DPDP)5, a statistically significant increase of about 50% was seen. The current article deals with confusing differences between early and positive findings with MnDPDP in comparison to the recent findings with Ca4Mn(DPDP)5. The POLAR failure may also reveal important mechanisms behind oxaliplatin-associated CIPN itself. Thus, exacerbated neurotoxicity in patients receiving Ca4Mn(DPDP)5 may be explained by redox interactions between Pt2+ and Mn2+ and subtle oxidative-nitrosative chain reactions. In peripheral sensory nerves, Pt2+ presumably leads to oxidation of the Mn2+ from Ca4Mn(DPDP)5 as well as from Mn2+ in MnSOD and other endogenous sources. Thereafter, Mn3+ may be oxidized by peroxynitrite (ONOO-) into Mn4+, which drives site-specific nitration of tyrosine (Tyr) 34 in the MnSOD enzyme. Conformational changes of MnSOD then lead to the closure of the superoxide (O2•-) access channel. A similar metal-driven nitration of Tyr74 in cytochrome c will cause an irreversible disruption of electron transport. Altogether, these events may uncover important steps in the mechanism behind Pt2+-associated CIPN. There is little doubt that the efficacy of MnDPDP and its therapeutic improved counterpart Ca4Mn(DPDP)5 mainly depends on their MnSOD-mimetic activity when it comes to their potential use as rescue medicines during, e.g., acute myocardial infarction. However, pharmacokinetic considerations suggest that the efficacy of MnDPDP on Pt2+-associated neurotoxicity depends on another action of this drug. Electron paramagnetic resonance (EPR) studies have demonstrated that Pt2+ outcompetes Mn2+ and endogenous Zn2+ in binding to fodipir (DPDP), hence suggesting that the previously reported protective efficacy of MnDPDP against CIPN is a result of chelation and elimination of Pt2+ by DPDP, which in turn suggests that Mn2+ is unnecessary for efficacy when it comes to oxaliplatin-associated CIPN.
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Affiliation(s)
- Jan Olof G. Karlsson
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linköping University, 581 83 Linköping, Sweden
| | - Per Jynge
- Department of Radiology, Innlandet Trust Hospital, Gjøvik Hospital, 2819 Gjøvik, Norway;
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Xu Z, Sun X, Chen Y. Exploring Enhanced Hydrolytic Dehydrogenation of Ammonia Borane with Porous Graphene-Supported Platinum Catalysts. Molecules 2024; 29:1761. [PMID: 38675581 PMCID: PMC11052364 DOI: 10.3390/molecules29081761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/29/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Graphene is a good support for immobilizing catalysts, due to its large theoretical specific surface area and high electric conductivity. Solid chemical converted graphene, in a form with multiple layers, decreases the practical specific surface area. Building pores in graphene can increase specific surface area and provide anchor sites for catalysts. In this study, we have prepared porous graphene (PG) via the process of equilibrium precipitation followed by carbothermal reduction of ZnO. During the equilibrium precipitation process, hydrolyzed N,N-dimethylformamide sluggishly generates hydroxyl groups which transform Zn2+ into amorphous ZnO nanodots anchored on reduced graphene oxide. After carbothermal reduction of zinc oxide, micropores are formed in PG. When the Zn2+ feeding amount is 0.12 mmol, the average size of the Pt nanoparticles on PG in the catalyst is 7.25 nm. The resulting Pt/PG exhibited the highest turnover frequency of 511.6 min-1 for ammonia borane hydrolysis, which is 2.43 times that for Pt on graphene without the addition of Zn2+. Therefore, PG treated via equilibrium precipitation and subsequent carbothermal reduction can serve as an effective support for the catalytic hydrolysis of ammonia borane.
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Affiliation(s)
- Zhenbo Xu
- The State Key Laboratory of Refractories and Metallurgy, Faculty of Materials, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Xiaolei Sun
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yao Chen
- The State Key Laboratory of Refractories and Metallurgy, Faculty of Materials, Wuhan University of Science and Technology, Wuhan 430081, China
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Alamilla-Sanchez M, Diaz Garcia JD, Yanez Salguero V, Morales Lopez F, Ulloa Galvan V, Velasco Garcia-Lascurain F, Yama Estrella B. Chemotherapy-induced tubulopathy: a case report series. Front Nephrol 2024; 4:1384208. [PMID: 38666245 PMCID: PMC11043590 DOI: 10.3389/fneph.2024.1384208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024]
Abstract
Acquired tubulopathies are frequently underdiagnosed. They can be characterized by the renal loss of specific electrolytes or organic solutes, suggesting the location of dysfunction. These tubulopathies phenotypically can resemble Bartter or Gitelman syndrome). These syndromes are infrequent, they may present salt loss resembling the effect of thiazides (Gitelman) or loop diuretics (Bartter). They are characterized by potentially severe hypokalemia, associated with metabolic alkalosis, secondary hyperaldosteronism, and often hypomagnesemia. Tubular dysfunction has been described as nephrotoxic effects of platinum-based chemotherapy. We present 4 cases with biochemical signs of tubular dysfunction (Bartter-like/Gitelman-like phenotype) related to chemotherapy.
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Affiliation(s)
- Mario Alamilla-Sanchez
- Department of Nephrology, November 20 National Medical Center (CMN), Mexico City, Mexico
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11
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Yalcin K, Kumar R, Zuidema E, Kulkarni AR, Ciston J, Bustillo KC, Ercius P, Katz A, Gates BC, Kronawitter CX, Runnebaum RC. Reversible Intrapore Redox Cycling of Platinum in Platinum-Ion-Exchanged HZSM-5 Catalysts. ACS Catal 2024; 14:4999-5005. [PMID: 38601777 PMCID: PMC11002820 DOI: 10.1021/acscatal.3c06325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 04/12/2024]
Abstract
Isolated platinum(II) ions anchored at acid sites in the pores of zeolite HZSM-5, initially introduced by aqueous ion exchange, were reduced to form platinum nanoparticles that are stably dispersed with a narrow size distribution (1.3 ± 0.4 nm in average diameter). The nanoparticles were confined in reservoirs within the porous zeolite particles, as shown by electron beam tomography and the shape-selective catalysis of alkene hydrogenation. When the nanoparticles were oxidatively fragmented in dry air at elevated temperature, platinum returned to its initial in-pore atomically dispersed state with a charge of +2, as shown previously by X-ray absorption spectroscopy. The results determine the conditions under which platinum is retained within the pores of HZSM-5 particles during redox cycles that are characteristic of the reductive conditions of catalyst operation and the oxidative conditions of catalyst regeneration.
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Affiliation(s)
- Kaan Yalcin
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Ram Kumar
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Erik Zuidema
- Shell
Global Solutions B.V. Amsterdam 1031 HW, The Netherlands
| | - Ambarish R. Kulkarni
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Jim Ciston
- National
Center for Electron Microscopy Facility, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Karen C. Bustillo
- National
Center for Electron Microscopy Facility, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Peter Ercius
- National
Center for Electron Microscopy Facility, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alexander Katz
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Bruce C. Gates
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Coleman X. Kronawitter
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Ron C. Runnebaum
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
- Department
of Viticulture & Enology, University
of California, Davis, 95616, United States
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12
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Yan W, Xing Q, Ren J, Feng H, Yu J, Liu H, Chen W, Wang K, Chen Y. Enhanced Activity of Small Pt Nanoparticles Decorated with High-Loading Single Fe─N 4 for Methanol Oxidation and Oxygen Reduction via the Assistive Active Sites Strategy. Small 2024; 20:e2308473. [PMID: 37972267 DOI: 10.1002/smll.202308473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/29/2023] [Indexed: 11/19/2023]
Abstract
Decorating platinum (Pt) with a single atom offers a promising approach to tailoring their catalytic activity. In this study, for the first time, an innovative assistive active sites (AAS) strategy is proposed to construct high-loading (3.46wt.%) single Fe─N4 as AAS, which are further hybridized with small Pt nanoparticles to enhance both oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) activities. For ORR, the target catalyst (Pt/HFeSA-HCS) exhibits a higher mass activity (MA) of 0.98 A mgPt -1 and specific activity (SA) of 1.39 mA cmPt -2 at 0.90 V versus RHE. As for MOR, Pt/HFeSA-HCS shows exceptional MA (3.21 A mgPt -1) and SA (4.27 mA cmPt -2) at peak values, surpassing commercial Pt/C by 15.3 and 11.5 times, respectively. The underlying mechanism behind this AAS strategy is to find that in MOR, Fe─N4 promotes water dissociation, generating more *OH to accelerate the conversion of *CO to CO2. Meanwhile, in ORR, Fe─N4 acts as a competitor to adsorb *OH, weakening Pt─OH bonding and facilitating desorption of *OH on the Pt surface. Constructing AAS that can enhance dual functionality simultaneously can be seen as a successful "kill two birds with one stone" strategy.
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Affiliation(s)
- Wei Yan
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Qianli Xing
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Jianwei Ren
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Hao Feng
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Jinshi Yu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Hao Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Wenmiao Chen
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Kang Wang
- Department of Chemistry and Chemical Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Yanli Chen
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
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13
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Chabot C, Italiano A, Crombé A, Soubeyran I, Laizet Y, Khalifa E, Cousin S. Are DNA Repair Gene Alterations Associated With the Response to Platinum-Based Regimen and Immune Checkpoint Inhibitors in Patients With Solid Tumors? Oncologist 2024:oyae044. [PMID: 38558248 DOI: 10.1093/oncolo/oyae044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 02/13/2024] [Indexed: 04/04/2024] Open
Abstract
We analyzed the antitumor activity of platinum-based chemotherapies and then immune checkpoint inhibitors (ICI) in all-comers patients with solid tumors having a somatic DNA damage repair gene alteration (DDR-GA) identified through a prospective precision medicine study (NCT02534649). Each DDR-GA was classified as pathogenic (Pa), probably pathogenic (PPa), and unknown pathogenicity (UPa) according to OncoKB and ClinVAR databases. Between January 2018 and May 2020, 662 patients were screened. One hundred ninety-nine tumors with DDR-GA were found in 121 (18.3%) patients. Ninety-six patients received platinum-based chemotherapy in the advanced setting. No difference in objective response rate (ORR) under platinum regimen was observed between the 3 DDR-GA groups. The only predictor of worse progression-free survival (PFS) in Cox regression was the existence of a Pa alteration compared to the UPa group: HR = 2.11 (95% CI = 1.2-3.7), P = .009. Forty-eight patients received ICI alone or in combination. We observed a significant trend in better ORR to ICI according to the DDR-GA status: 1/11 (9%) patients in UPa, 5/17 (29.4%) patients in PPa, and 9/20 (45%) patients in Pa (P = .003, Cochran-Armitage trend test), and an increased 6-month PFS probability of 11%, 44%, and 50% in the UPa, PPa, and Pa groups, respectively (P = .37, log-rank test). Overall, somatic pathogenic DDR-GAs were not associated with ORR or PFS to platinum-based chemotherapy in patients with unselected advanced solid tumors. However, DDR-GA seemed to impact ORR and PFS to ICI, paving the way for a therapeutic combination with ICI and molecules targeting the DDR mechanisms, which are currently evaluated in ongoing clinical trials.
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Affiliation(s)
- Clément Chabot
- Early Phase Trials Department, Institut Bergonié, Bordeaux, France
| | - Antoine Italiano
- Early Phase Trials Department, Institut Bergonié, Bordeaux, France
| | - Amandine Crombé
- Department of Radiology, Pellegrin University Hospital, Bordeaux, France
| | | | - Yech'an Laizet
- Department of Bioinformatics, Institut Bergonié, Bordeaux, France
| | - Emmanuel Khalifa
- Department of Molecular Biology, Institut Bergonié, Bordeaux, France
| | - Sophie Cousin
- Early Phase Trials Department, Institut Bergonié, Bordeaux, France
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14
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Harvey-Jones E, Raghunandan M, Robbez-Masson L, Magraner-Pardo L, Alaguthurai T, Yablonovitch A, Yen J, Xiao H, Brough R, Frankum J, Song F, Yeung J, Savy T, Gulati A, Alexander J, Kemp H, Starling C, Konde A, Marlow R, Cheang M, Proszek P, Hubank M, Cai M, Trendell J, Lu R, Liccardo R, Ravindran N, Llop-Guevara A, Rodriguez O, Balmana J, Lukashchuk N, Dorschner M, Drusbosky L, Roxanis I, Serra V, Haider S, Pettitt SJ, Lord CJ, Tutt ANJ. Longitudinal profiling identifies co-occurring BRCA1/2 reversions, TP53BP1, RIF1 and PAXIP1 mutations in PARP inhibitor-resistant advanced breast cancer. Ann Oncol 2024; 35:364-380. [PMID: 38244928 DOI: 10.1016/j.annonc.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Resistance to therapies that target homologous recombination deficiency (HRD) in breast cancer limits their overall effectiveness. Multiple, preclinically validated, mechanisms of resistance have been proposed, but their existence and relative frequency in clinical disease are unclear, as is how to target resistance. PATIENTS AND METHODS Longitudinal mutation and methylation profiling of circulating tumour (ct)DNA was carried out in 47 patients with metastatic BRCA1-, BRCA2- or PALB2-mutant breast cancer treated with HRD-targeted therapy who developed progressive disease-18 patients had primary resistance and 29 exhibited response followed by resistance. ctDNA isolated at multiple time points in the patient treatment course (before, on-treatment and at progression) was sequenced using a novel >750-gene intron/exon targeted sequencing panel. Where available, matched tumour biopsies were whole exome and RNA sequenced and also used to assess nuclear RAD51. RESULTS BRCA1/2 reversion mutations were present in 60% of patients and were the most prevalent form of resistance. In 10 cases, reversions were detected in ctDNA before clinical progression. Two new reversion-based mechanisms were identified: (i) intragenic BRCA1/2 deletions with intronic breakpoints; and (ii) intragenic BRCA1/2 secondary mutations that formed novel splice acceptor sites, the latter being confirmed by in vitro minigene reporter assays. When seen before commencing subsequent treatment, reversions were associated with significantly shorter time to progression. Tumours with reversions retained HRD mutational signatures but had functional homologous recombination based on RAD51 status. Although less frequent than reversions, nonreversion mechanisms [loss-of-function (LoF) mutations in TP53BP1, RIF1 or PAXIP1] were evident in patients with acquired resistance and occasionally coexisted with reversions, challenging the notion that singular resistance mechanisms emerge in each patient. CONCLUSIONS These observations map the prevalence of candidate drivers of resistance across time in a clinical setting, information with implications for clinical management and trial design in HRD breast cancers.
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Affiliation(s)
- E Harvey-Jones
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK; The Breast Cancer Now Research Unit, Guy's Hospital Cancer Centre, King's College London, UK; The City of London Cancer Research UK Centre at King's College London, UK
| | - M Raghunandan
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - L Robbez-Masson
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - L Magraner-Pardo
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - T Alaguthurai
- The Breast Cancer Now Research Unit, Guy's Hospital Cancer Centre, King's College London, UK
| | | | - J Yen
- Guardant Health Inc., Redwood City, USA
| | - H Xiao
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - R Brough
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - J Frankum
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - F Song
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - J Yeung
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - T Savy
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - A Gulati
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - J Alexander
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - H Kemp
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - C Starling
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - A Konde
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - R Marlow
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - M Cheang
- Clinical Trials and Statistics Unit, The Institute of Cancer Research, London, UK
| | - P Proszek
- Clinical Genomics, The Royal Marsden Hospital, London, UK
| | - M Hubank
- Clinical Genomics, The Royal Marsden Hospital, London, UK
| | - M Cai
- Guardant Health Inc., Redwood City, USA
| | - J Trendell
- The Breast Cancer Now Research Unit, Guy's Hospital Cancer Centre, King's College London, UK
| | - R Lu
- The Breast Cancer Now Research Unit, Guy's Hospital Cancer Centre, King's College London, UK
| | - R Liccardo
- The Breast Cancer Now Research Unit, Guy's Hospital Cancer Centre, King's College London, UK
| | - N Ravindran
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | | | - O Rodriguez
- Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - J Balmana
- Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | | | | | | | - I Roxanis
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - V Serra
- Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - S Haider
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - S J Pettitt
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK.
| | - C J Lord
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK.
| | - A N J Tutt
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK; The Breast Cancer Now Research Unit, Guy's Hospital Cancer Centre, King's College London, UK; The City of London Cancer Research UK Centre at King's College London, UK.
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15
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Aslanidis E, Sarigiannidis S, Skotadis E, Tsoukalas D. Vibration Sensors on Flexible Substrates Based on Nanoparticle Films Grown by Physical Vapor Deposition. Materials (Basel) 2024; 17:1522. [PMID: 38612037 PMCID: PMC11012843 DOI: 10.3390/ma17071522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/22/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024]
Abstract
Flexible electronics have gained a lot of attention in recent years due to their compatibility with soft robotics, artificial arms, and many other applications. Meanwhile, the detection of acoustic frequencies is a very useful tool for applications ranging from voice recognition to machine condition monitoring. In this work, the dynamic response of Pt nanoparticles (Pt NPs)-based strain sensors on flexible substrates is investigated. the nanoparticles were grown in a vacuum by magnetron-sputtering inert-gas condensation. Nanoparticle sensors made on cracked alumina deposited by atomic layer deposition on the flexible substrate and reference nanoparticle sensors, without the alumina layer, were first characterized by their response to strain. The sensors were then characterized by their dynamic response to acoustic frequency vibrations between 20 Hz and 6250 Hz. The results show that alumina sensors outperformed the reference sensors in terms of voltage amplitude. Sensors on the alumina layer could accurately detect frequencies up to 6250 Hz, compared with the reference sensors, which were sensitive to frequencies up to 4250 Hz, while they could distinguish between two neighboring frequencies with a difference of no more than 2 Hz.
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Affiliation(s)
- Evangelos Aslanidis
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (S.S.); (E.S.)
- Institute of Electronic Structure and Laser, Foundation for Research & Technology Hellas, N.Plastira 100, Voutes, 70013 Heraklion, Greece
| | - Savvas Sarigiannidis
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (S.S.); (E.S.)
| | - Evangelos Skotadis
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (S.S.); (E.S.)
| | - Dimitris Tsoukalas
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (S.S.); (E.S.)
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16
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Xie Y, Wang Z, Xu M, Xiong H, Chen Y, Wang X, Yu Z, Zhou W, Tang S. A sulfur-modified pore-blocking method to enhance the electrocatalytic stability of carbon-supported platinum nanoparticles. ChemSusChem 2024; 17:e202301819. [PMID: 38288777 DOI: 10.1002/cssc.202301819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/01/2024] [Indexed: 03/10/2024]
Abstract
Currently, the durability of electrode materials remains a big obstacle to the widespread adoption of proton exchange membrane fuel cells (PEMFCs). Herein thiourea and sodium dodecyl benzene sulfonate (SDS) were employed as sulfur source and carbon source to modify the pristine carbon black (Ketjen black EC300 J). A highly durable carbon supported Pt nanosized catalyst with higher platinum utilization for oxygen reduction reaction (ORR) in PEMFCs was produced by doping elemental sulfur into carbon supports and decreasing the carbon pore sizes and volume through a successive impregnation technique. The catalyst exhibits an initial activity of 0.167 A mgPt -1 at 0.90 V and demonstrates minimal activity loss after acceleration stress test (30,000 cycles of AST). The half-wave potential loss for representative sample (Pt/S-C-3) is only 14 mV with only 21.8 % ECSA decrease, 27.5 % MA loss and 5.9 % SA loss. A sintering test at various temperature shows a minor average size increase for sulfur-doped carbon (S-C) supported one (from 2.09 to 2.52 nm). In single-cell test, the MEA sample employing the platinum catalyst on modified carbon as cathode exhibited almost negligible performance loss after 30,000 cycles of AST.
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Affiliation(s)
- Yuhang Xie
- State Key Lab of Oil and Gas Reservoir Geology & Exploitation, Southwest Petroleum University, Chengdu, 610500, PR China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, P.R. China
| | - Zhengluo Wang
- Sinocat Environmental Protection Technology Co., LTD, Chengdu, 610500, P.R. China phone
| | - Mingjie Xu
- State Key Lab of Oil and Gas Reservoir Geology & Exploitation, Southwest Petroleum University, Chengdu, 610500, PR China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, P.R. China
| | - Hongxi Xiong
- State Key Lab of Oil and Gas Reservoir Geology & Exploitation, Southwest Petroleum University, Chengdu, 610500, PR China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, P.R. China
| | - Yonglin Chen
- State Key Lab of Oil and Gas Reservoir Geology & Exploitation, Southwest Petroleum University, Chengdu, 610500, PR China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, P.R. China
| | - Xiaohan Wang
- State Key Lab of Oil and Gas Reservoir Geology & Exploitation, Southwest Petroleum University, Chengdu, 610500, PR China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, P.R. China
| | - Zelong Yu
- State Key Lab of Oil and Gas Reservoir Geology & Exploitation, Southwest Petroleum University, Chengdu, 610500, PR China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, P.R. China
| | - Weijiang Zhou
- Sinocat Environmental Protection Technology Co., LTD, Chengdu, 610500, P.R. China phone
| | - Shuihua Tang
- State Key Lab of Oil and Gas Reservoir Geology & Exploitation, Southwest Petroleum University, Chengdu, 610500, PR China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, P.R. China
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17
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Lamb JV, Lee YH, Sun J, Byron C, Uppuluri R, Kennedy RM, Meng C, Behera RK, Wang YY, Qi L, Sadow AD, Huang W, Ferrandon MS, Scott SL, Poeppelmeier KR, Abu-Omar MM, Delferro M. Supported Platinum Nanoparticles Catalyzed Carbon-Carbon Bond Cleavage of Polyolefins: Role of the Oxide Support Acidity. ACS Appl Mater Interfaces 2024; 16:11361-11376. [PMID: 38393744 DOI: 10.1021/acsami.3c15350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
Supported platinum nanoparticle catalysts are known to convert polyolefins to high-quality liquid hydrocarbons using hydrogen under relatively mild conditions. To date, few studies using platinum grafted onto various metal oxide (MxOy) supports have been undertaken to understand the role of the acidity of the oxide support in the carbon-carbon bond cleavage of polyethylene under consistent catalytic conditions. Specifically, two Pt/MxOy catalysts (MxOy = SrTiO3 and SiO2-Al2O3; Al = 3.0 wt %, target Pt loading 2 wt % Pt ∼1.5 nm), under identical catalytic polyethylene hydrogenolysis conditions (T = 300 °C, P(H2) = 170 psi, t = 24 h; Mw = ∼3,800 g/mol, Mn = ∼1,100 g/mol, Đ = 3.45, Nbranch/100C = 1.0), yielded a narrow distribution of hydrocarbons with molecular weights in the range of lubricants (Mw = < 600 g/mol; Mn < 400 g/mol; Đ = 1.5). While Pt/SrTiO3 formed saturated hydrocarbons with negligible branching, Pt/SiO2-Al2O3 formed partially unsaturated hydrocarbons (<1 mol % alkenes and ∼4 mol % alkyl aromatics) with increased branch density (Nbranch/100C = 5.5). Further investigations suggest evidence for a competitive hydrocracking mechanism occurring alongside hydrogenolysis, stemming from the increased acidity of Pt/SiO2-Al2O3 compared to Pt/SrTiO3. Additionally, the products of these polymer deconstruction reactions were found to be independent of the polyethylene feedstock, allowing the potential to upcycle polyethylenes with various properties into a value-added product.
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Affiliation(s)
- Jessica V Lamb
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Yu-Hsuan Lee
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Jiakai Sun
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Carly Byron
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Ritesh Uppuluri
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Robert M Kennedy
- Aeternal Upcycling, Inc., Chicago, Illinois 60640, United States
| | - Chao Meng
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Ranjan K Behera
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Yi-Yu Wang
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Long Qi
- Chemical and Biological Sciences Division, Ames National Laboratory, Ames, Iowa 50011, United States
| | - Aaron D Sadow
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Chemical and Biological Sciences Division, Ames National Laboratory, Ames, Iowa 50011, United States
| | - Wenyu Huang
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Chemical and Biological Sciences Division, Ames National Laboratory, Ames, Iowa 50011, United States
| | - Magali S Ferrandon
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Susannah L Scott
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Kenneth R Poeppelmeier
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Mahdi M Abu-Omar
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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18
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Qin S, Denisov N, Kim H, Schmuki P. Photocatalytic H 2 Generation: Controlled and Optimized Dispersion of Single Atom Co-Catalysts Based on Pt-TCPP Planar Adsorption on TiO 2. Angew Chem Int Ed Engl 2024; 63:e202316660. [PMID: 38237060 DOI: 10.1002/anie.202316660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Indexed: 02/02/2024]
Abstract
When using single atoms (SAs) as a co-catalyst in photocatalytic H2 generation, achieving a well-dispersed, evenly distributed and adjustable SA surface density on a semiconductor surface is a challenging task. In the present work we use the planar adsorption of tetrakis-(4-carboxyphenyl)-porphyrin (TCPP) and its platinum coordinated analogue, Pt-TCPP, onto anatase TiO2 surfaces to establish a spatially controlled decoration of SAs. We show that the surface Pt SA density can be very well controlled by co-adsorption of Pt-TCPP and TCPP in the planar monolayer regime, and by adjusting the Pt-TCPP to TCPP ratio a desired well dispersed surface density of SAs up to 2.6×105 atoms μm-2 can be established (which is the most effective Pt SA loading for photocatalysis). This distribution and the SA state are maintained after a thermal treatment in air, and an optimized SA density as well as a most active form of Pt for photocatalytic H2 evolution can be established and maintained.
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Affiliation(s)
- Shanshan Qin
- Department of Materials Science WW4-LKO, Friedrich-Alexander-University of Erlangen-Nuremberg, Martensstrasse 7, 91058, Erlangen, Germany
| | - Nikita Denisov
- Department of Materials Science WW4-LKO, Friedrich-Alexander-University of Erlangen-Nuremberg, Martensstrasse 7, 91058, Erlangen, Germany
| | - Hyesung Kim
- Department of Materials Science WW4-LKO, Friedrich-Alexander-University of Erlangen-Nuremberg, Martensstrasse 7, 91058, Erlangen, Germany
| | - Patrik Schmuki
- Department of Materials Science WW4-LKO, Friedrich-Alexander-University of Erlangen-Nuremberg, Martensstrasse 7, 91058, Erlangen, Germany
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Olomouc, 779 00, Czech Republic
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Lam TL, Li H, Tan K, Chen Z, Tang YK, Yang J, Cheng G, Dai L, Che CM. Sterically Hindered Tetradentate [Pt(O^N^C^N)] Emitters with Radiative Decay Rates up to 5.3 × 10 5 s -1 for Phosphorescent Organic Light-Emitting Diodes with LT 95 Lifetime over 9200 h at 1000 cd m -2. Small 2024; 20:e2307393. [PMID: 37897146 DOI: 10.1002/smll.202307393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/07/2023] [Indexed: 10/29/2023]
Abstract
Described here are sterically hindered tetradentate [Pt(O^N^C^N)] emitters (Pt-1, Pt-2, and Pt-3) developed for stable and high-performance green phosphorescent organic light-emitting diodes (OLEDs). These Pt(II) emitters exhibit strong saturated green phosphorescence (λmax = 517-531 nm) in toluene and mCP thin films with emission quantum yields as high as 0.97, radiative rate constants (kr) as high as 4.4-5.3 × 105 s-1 and reduced excimer emission, and with a preferential horizontally oriented transition dipole ratio of up to 84%. Theoretical calculations show that p-(hetero)arene substituents at the periphery of the ligand scaffolds in Pt-1, Pt-2, and Pt-3 can i) enhance the spin-orbit coupling (SOC) between the lower singlet excited states and the T1 state, and S0→Sn (n = 1 or 2) transition dipole moment, and ii) introducing additional SOC activity and the bright 1ILCT[π(carbazole)→π*(N^C^N)] excited state (Pt-2 and Pt-3), which are the main contributors to the increased kr values. Utilizing these tetradentate Pt(II) emitters, green phosphorescent OLEDs are fabricated with narrow-band electroluminescence (FWHM down to 36 nm), high external quantum efficiency, current efficiency up to 27.6% and 98.7 cd A-1, and an unprecedented device lifetime (LT95) of up to 9270 h at 1000 cd m-2 under laboratory conditions.
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Affiliation(s)
- Tsz-Lung Lam
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
- Hong Kong Quantum AI Lab Limited, Units 909-915, Building 17 W, 17 Science Park West Avenue, Hong Kong Science Park, Pak Shek Kok, Hong Kong
| | - Huiyang Li
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
- Guangdong Aglaia Optoelectronic Materials Co., Ltd, Foshan, 528300, China
| | - Kaixin Tan
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Ziyong Chen
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Yu-Kan Tang
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Jun Yang
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
- Hong Kong Quantum AI Lab Limited, Units 909-915, Building 17 W, 17 Science Park West Avenue, Hong Kong Science Park, Pak Shek Kok, Hong Kong
| | - Gang Cheng
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
- Hong Kong Quantum AI Lab Limited, Units 909-915, Building 17 W, 17 Science Park West Avenue, Hong Kong Science Park, Pak Shek Kok, Hong Kong
- HKU Shenzhen Institute of Research and Innovation, Shenzhen, Guangdong, 518057, P. R. China
| | - Lei Dai
- Guangdong Aglaia Optoelectronic Materials Co., Ltd, Foshan, 528300, China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
- Hong Kong Quantum AI Lab Limited, Units 909-915, Building 17 W, 17 Science Park West Avenue, Hong Kong Science Park, Pak Shek Kok, Hong Kong
- HKU Shenzhen Institute of Research and Innovation, Shenzhen, Guangdong, 518057, P. R. China
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20
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Dash ZS, Huang RQ, Kimber AN, Olubajo OT, Polk M, Rancu OP, Zhang LL, Fu J, Nagelj N, Reynolds KG, Zheng SL, Dogutan DK. Oxygen quenching of structurally characterized [5,10,15,20-tetrakis(4-fluoro-2,6-dimethylphenyl)porphyrinato] platinum(II). Acta Crystallogr C Struct Chem 2024; 80:85-90. [PMID: 38407217 DOI: 10.1107/s2053229624001621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 02/19/2024] [Indexed: 02/27/2024] Open
Abstract
The compound [5,10,15,20-tetrakis(4-fluoro-2,6-dimethylphenyl)porphyrinato]platinum(II), [Pt(C52H40F4N4)] or Pt(II)TFP, has been synthesized and structurally characterized by single-crystal X-ray crystallography. The Pt porphyrin exhibits a long-lived phosphorescent excited state (τ0 = 66 µs), which has been characterized by transient absorption and emission spectroscopy. The phosphorescence is extremely sensitive to oxygen, as reflected by a quenching rate constant of 5.0 × 108 M-1 s-1, and as measured by Stern-Volmer quenching analysis.
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Affiliation(s)
- Zane S Dash
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Raymond Q Huang
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Ana N Kimber
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Opeyemi T Olubajo
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Mark Polk
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Oliver P Rancu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Lauren L Zhang
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Jane Fu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Nejc Nagelj
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Kristopher G Reynolds
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Shao Liang Zheng
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Dilek K Dogutan
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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21
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Maciel-Flores CE, Lozano-Alvarez JA, Bivián-Castro EY. Recently Reported Biological Activities and Action Targets of Pt(II)- and Cu(II)-Based Complexes. Molecules 2024; 29:1066. [PMID: 38474580 DOI: 10.3390/molecules29051066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Most diseases that affect human beings across the world are now treated with drugs of organic origin. However, some of these are associated with side effects, toxicity, and resistance phenomena. For the treatment of many illnesses, the development of new molecules with pharmacological potential is now an urgent matter. The biological activities of metal complexes have been reported to have antitumor, antimicrobial, anti-inflammatory, anti-infective and antiparasitic effects, amongst others. Metal complexes are effective because they possess unique properties. For example, the complex entity possesses the effective biological activity, then the formation of coordination bonds between the metal ions and ligands is controlled, metal ions provide it with extraordinary mechanisms of action because of characteristics such as d-orbitals, oxidation states, and specific orientations; metal complexes also exhibit good stability and good physicochemical properties such as water solubility. Platinum is a transition metal widely used in the design of drugs with antineoplastic activities; however, platinum is associated with side effects which have made it necessary to search for, and design, novel complexes based on other metals. Copper is a biometal which is found in living systems; it is now used in the design of metal complexes with biological activities that have demonstrated antitumoral, antimicrobial and anti-inflammatory effects, amongst others. In this review, we consider the open horizons of Cu(II)- and Pt(II)-based complexes, new trends in their design, their synthesis, their biological activities and their targets of action.
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Affiliation(s)
- Cristhian Eduardo Maciel-Flores
- Centro Universitario de los Lagos, Universidad de Guadalajara, Av. Enrique Díaz de León 1144, Col. Paseos de la Montaña, Lagos de Moreno 47460, Jalisco, Mexico
| | - Juan Antonio Lozano-Alvarez
- Departamento de Ingeniería Bioquímica, Universidad Autónoma de Aguascalientes, Av. Universidad 940 Cd. Universitaria, Aguascalientes 20131, Aguascalientes, Mexico
| | - Egla Yareth Bivián-Castro
- Centro Universitario de los Lagos, Universidad de Guadalajara, Av. Enrique Díaz de León 1144, Col. Paseos de la Montaña, Lagos de Moreno 47460, Jalisco, Mexico
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22
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Li X, Cheng J, Hou H, Meira DM, Liu L. Reactant-Induced Structural Evolution of Pt Catalysts Confined in Zeolite. JACS Au 2024; 4:666-679. [PMID: 38425920 PMCID: PMC10900205 DOI: 10.1021/jacsau.3c00732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 03/02/2024]
Abstract
Reactant-induced structural evolutions of heterogeneous metal catalysts are frequently observed in numerous catalytic systems, which can be associated with the formation or deactivation of active sites. In this work, we will show the structural transformation of subnanometer Pt clusters in pure-silica MFI zeolite structure in the presence of CO, O2, and/or H2O and the catalytic consequences of the Pt-zeolite materials derived from various treatment conditions. By applying the appropriate pretreatment under a reactant atmosphere, we can precisely modulate the size distribution of Pt species spanning from single Pt atoms to small Pt nanoparticles (1-5 nm) in the zeolite matrix, resulting in the desirably active and stable Pt species for CO oxidation. We also show the incorporation of Fe into the zeolite framework greatly promotes the stability of Pt species against undesired sintering under harsh conditions (up to 650 °C in the presence of CO, O2, and moisture).
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Affiliation(s)
- Xiaoyu Li
- Engineering
Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jinling Cheng
- Engineering
Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Huaming Hou
- National
Energy Center for Coal to Clean Fuels, Synfuels
China Co., Ltd., Huairou
District, Beijing 101407, China
| | - Debora M. Meira
- CLS@APS
sector 20, Advanced Photon Source, Argonne
National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Canadian
Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Lichen Liu
- Engineering
Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
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23
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Sadhukhan R, Kumar A, Prasanna PK, Guha A, Arenal R, Chakraborty S, Narayanan TN. Ultra-Low-Loaded Platinum Bonded Hexagonal Boron Nitride as Stable Electrocatalyst for Hydrogen Generation. ACS Appl Mater Interfaces 2024; 16:8627-8638. [PMID: 38345507 DOI: 10.1021/acsami.3c15296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Chemical stability of hexagonal boron nitride (hBN) ultrathin layers in harsh electrolytes and the availability of nitrogen site in hBN to stabilize metals like Pt are used here to develop a high intrinsic activity hydrogen evolution reaction (HER) catalyst having low loaded Pt (5 weight% or <1 atomic%). A catalyst having a nonzero oxidation state for Pt (with a Pt-N bonding) is shown to be HER active even with low catalyst loadings (0.114 mgcm-2). Electronic modification of the shear exfoliated hBN sheets is achieved by Au nanoparticle-based surface decoration (hBN_Au), and further anchoring with Pt develops a catalyst (hBN_Au_Pt) with high turnover frequency for HER (∼15). The hBN_Au_Pt is shown to be a highly durable catalyst even after the accelerated durability test for 10000 cycles and temperature annealing at 100 °C. Density functional theory based calculations gave insights in to the electronic modifications of hBN with Au and the catalytic activity of the hBN_Au_Pt system, in line with the experimental studies, indicating the demonstration of a new class of catalyst system devoid of issues such as carbon corrosion and Pt leaching.
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Affiliation(s)
- Rayantan Sadhukhan
- Tata Institute of Fundamental Research Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad 500046, India
| | - Amar Kumar
- Tata Institute of Fundamental Research Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad 500046, India
| | - Ponnappa K Prasanna
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute (HRI) Allahabad, A C.I. of Homi Bhabha National Institute, Chhatnag Road, Jhunsi, Prayagraj (Allahabad) 211019, India
| | - Anku Guha
- Tata Institute of Fundamental Research Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad 500046, India
- The Institute of Photonic Sciences (ICFO), Barcelona, 08860 Spain
| | - Raul Arenal
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Laboratorio de Microscopias Avanzadas (LMA), Universidad de Zaragoza, 50018 Zaragoza, Spain
- Fundación ARAID, 50018 Zaragoza, Spain
| | - Sudip Chakraborty
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute (HRI) Allahabad, A C.I. of Homi Bhabha National Institute, Chhatnag Road, Jhunsi, Prayagraj (Allahabad) 211019, India
| | - Tharangattu N Narayanan
- Tata Institute of Fundamental Research Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad 500046, India
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24
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Gautam S, Chugh S, Gates BD. Electrodeposition of PdPt Nanoparticles on Edges and S-Vacancies in Exfoliated MoS 2 Nanosheets for Enhanced Hydrogen Evolution Activity. ChemSusChem 2024:e202301922. [PMID: 38381851 DOI: 10.1002/cssc.202301922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 02/23/2024]
Abstract
Deposition of metal nanoparticles onto the molybdenum disulfide (MoS2 ) nanosheets is an efficient method to tune the electronic structure of the MoS2 and maximize its catalytic performance towards the hydrogen evolution reaction (HER). Herein, we report the electrodeposition of Pd and Pt nanoparticles onto desulfurized MoS2 nanosheets (MoS2-x ) to achieve an improved HER activity in an acidic electrolyte. The initial MoS2 powder was exfoliated and isolated through centrifugation, followed by electrochemical desulfurization to create defect sites. Subsequently, Pt and Pd nanoparticles were electrodeposited onto the S-vacancies of MoS2-x nanosheets. The resulting PdPt nanoparticles, with a diameter of 3.3 ±1.7 nm, were distributed across the surfaces of the nanosheets. A preferential deposition was evident at the edges of the nanosheets, particularly when Pd was deposited first followed by Pt. Owing to this preferential deposition of Pd and Pt and the synergistic interaction of MoS2-x with Pd and Pt, the prepared catalyst exhibited a low overpotential of 30 mV at 10 mA cm-2 , which is 2.7× lower than the MoS2-x alone. The prepared catalyst exhibited a 1.7× increase in the mass activity at 20 mV overpotential, relative to that of a commercial Pt/C nanocatalyst, showcasing its promising potential as an alternative catalyst.
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Affiliation(s)
- Sakshi Gautam
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
- Alternate Energy Department, Indian Oil R&D, Sector-13, Faridabad, 121007, India
| | - Sachin Chugh
- Alternate Energy Department, Indian Oil R&D, Sector-13, Faridabad, 121007, India
| | - Byron D Gates
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
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25
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Katkova SA, Bunev AS, Gasanov RE, Khochenkov DA, Kulsha AV, Ivashkevich OA, Serebryanskaya TV, Kinzhalov MA. Metal-(Acyclic Diaminocarbene) Complexes Demonstrate Nanomolar Antiproliferative Activity against Triple-Negative Breast Cancer. Chemistry 2024:e202400101. [PMID: 38363795 DOI: 10.1002/chem.202400101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 02/18/2024]
Abstract
Hydrolytically stable PdII and PtII complexes supported by acyclic diaminocarbene ligands represent a novel class of structural organometallic anticancer agents exhibiting nanomolar antiproliferative activity in a panel of cancer cell lines (IC50 0.07-0.81 μM) and up to 300-fold selectivity for cancer cells over normal primary fibroblasts. The lead drug candidate was 300 times more potent than cisplatin in vitro and showed higher efficacy in reducing the growth of aggressive MDA-MB-231 xenograft tumors in mice.
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Affiliation(s)
- Svetlana A Katkova
- Saint Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russian Federation
| | - Alexander S Bunev
- Medicinal Chemistry Center, Togliatti State University, Belorusskaya 14, Togliatti, 445020, Russian Federation
| | - Rovshan E Gasanov
- Medicinal Chemistry Center, Togliatti State University, Belorusskaya 14, Togliatti, 445020, Russian Federation
| | - Dmitry A Khochenkov
- Medicinal Chemistry Center, Togliatti State University, Belorusskaya 14, Togliatti, 445020, Russian Federation
- Blokhin National Medical Research Center of Oncology, Kashirskoe Shosse 24, 115478, Moscow, Russian Federation
| | - Andrey V Kulsha
- Department of Chemistry, Belarusian State University, Leningradskaya 14, 220006, Minsk, Belarus
| | - Oleg A Ivashkevich
- Research Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya 14, 220006, Minsk, Belarus
| | - Tatiyana V Serebryanskaya
- Research Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya 14, 220006, Minsk, Belarus
| | - Mikhail A Kinzhalov
- Saint Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russian Federation
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26
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Jin Z, Zhao-Xia L, Fan-Ke P, Wen-Juan Z, Min-Li W, Han-Yi Z. Progress in the study of reproductive toxicity of platinum-based antitumor drugs and their means of prevention. Front Pharmacol 2024; 15:1327502. [PMID: 38414732 PMCID: PMC10896984 DOI: 10.3389/fphar.2024.1327502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/31/2024] [Indexed: 02/29/2024] Open
Abstract
Platinum-based antitumor drugs are broad-spectrum agents with unique mechanisms of action. Combination chemotherapy regimens based on platinum drugs are commonly used in cancer treatment. However, these drugs can cause various adverse reactions in the human body through different routes of administration, including reproductive toxicity, genetic toxicity, and embryonic developmental toxicity. Preventing adverse effects is crucial to enhance patients' quality of life and reduce healthcare costs. This article discusses the types and developmental history of antitumor active platinum compounds, their mechanisms of action, routes of administration, and their potential reproductive, genetic, and embryonic developmental toxicity. This text explores preventive measures based on animal experimental results. Its aim is to provide references for personalized treatment and occupational protection when using platinum drugs. The continuous progress of science and technology, along with the deepening of medical research, suggests that the application of platinum drugs will broaden. Therefore, the development of new platinum drugs will be an important direction for future research.
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Affiliation(s)
- Zhan Jin
- Gannan Medical University, Ganzhou, China
| | - Liu Zhao-Xia
- Department of Reproductive Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | | | | | - Wei Min-Li
- Department of Reproductive Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Zeng Han-Yi
- Department of Reproductive Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Genetics at the School of Basic Medicine, Gannan Medical University, Ganzhou, China
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27
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Krasny S, Baranau Y, Polyakov S, Zharkova E, Streltsova O, Filimonava A, Siarheyeva V, Kazlouskaya S, Khorau A, Gabai V, Shneider A. Clinical efficacy of plasmid encoding p62/SQSTM1 (Elenagen) in combination with gemcitabine in patients with platinum-resistant ovarian cancer: a randomized controlled trial. Front Oncol 2024; 14:1343023. [PMID: 38410116 PMCID: PMC10895999 DOI: 10.3389/fonc.2024.1343023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/12/2024] [Indexed: 02/28/2024] Open
Abstract
Background The purpose of this trial is to evaluate the safety and efficacy of ELENAGEN, a novel anticancer therapeutic DNA plasmid encoding p62/SQSTM1 protein, as an adjuvant to chemotherapy with gemcitabine (GEM) in patients with advanced platinum-resistant ovarian cancer. Methods This open-label prospective randomized study with two arms. GEM (1000 mg/m2) on days 1 and 8 every 3 weeks was administered in both arms: in the Chemo arm (n = 20), GEM was the only treatment, and in the ELENAGEN arm (n = 20), GEM was supplemented with ELENAGEN (2.5 mg i.m. weekly). The primary endpoint was progression-free survival (PFS), and the secondary endpoint was safety. Antitumor activity was assessed by RECIST 1.1, and criteria safety was assessed according to NCI CTCAE version 5.0. Results According to the cutoff data, the median follow-up was 13.8 months. There were no serious adverse events related to ELENAGEN treatment. The median PFS was 2.8 and 7.2 months in the Chemo and ELENAGEN arms, respectively (p Log-Rank = 0.03). Notably, at the time of cutoff, 9 patients (45%) in the ELENAGEN arm did not progress, with the longest PFS recorded thus far being 24 months. Subgroup analysis of patients in both arms demonstrated high efficacy of ELENAGEN in patients with worse prognostic factors: high pretreatment levels of CA125 and progression after platinum-free interval <3 months. Conclusions The addition of ELENAGEN to gemcitabine is effective in patients with platinum-resistant ovarian cancer, including those with a worse prognosis. Clinical trial registration https://www.clinicaltrials.gov/study/NCT05979298, identifier NCT05979298, 2023-08-07.
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Affiliation(s)
- Sergei Krasny
- N. N. Alexandrov National Cancer Centre of Belarus, Minsk, Belarus
| | | | - Sergey Polyakov
- N. N. Alexandrov National Cancer Centre of Belarus, Minsk, Belarus
| | | | | | | | - Volha Siarheyeva
- N. N. Alexandrov National Cancer Centre of Belarus, Minsk, Belarus
| | | | - Anton Khorau
- N. N. Alexandrov National Cancer Centre of Belarus, Minsk, Belarus
| | | | - Alexander Shneider
- CureLab Oncology, Inc., Boston, MA, United States
- Department of Molecular Biology, Ariel University, Ariel, Israel
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28
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Govindarajan R, Fayzullin RR, Deolka S, Khaskin E, Vasylevskyi S, Vardhanapu PK, Pal S, Khusnutdinova JR. Facile Access to Cationic Methylstannylenes and Silylenes Stabilized by E-Pt Bonding and their Methyl Group Transfer Reactivity. Chemistry 2024; 30:e202303789. [PMID: 37984073 DOI: 10.1002/chem.202303789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 11/20/2023] [Accepted: 11/20/2023] [Indexed: 11/22/2023]
Abstract
We describe a family of cationic methylstannylene and chloro- and azidosilylene organoplatinum(II) complexes supported by a neutral, binucleating ligand. Methylstannylenes MeSn:+ are stabilized by coordination to PtII and are formed by facile Me group transfer from dimethyl or monomethyl PtII complexes, in the latter case triggered by concomitant B-H, Si-H, and H2 bond activation that involves hydride transfer from Sn to Pt. A cationic chlorosilylene complex was obtained by formal HCl elimination and Cl- removal from HSiCl3 under ambient conditions. The computational studies show that stabilization of cationic methylstannylenes and cationic silylenes is achieved through weak coordination to a neutral N-donor ligand binding pocket. The analysis of the electronic potentials, as well as the Laplacian of electron density, also reveals the differences in the character of Pt-Si vs. Pt-Sn bonding. We demonstrate the importance of a ligand-supported binuclear Pt/tetrel core and weak coordination to facilitate access to tetrylium-ylidene Pt complexes, and a transmetalation approach to the synthesis of MeSnII :+ derivatives.
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Affiliation(s)
- Ramadoss Govindarajan
- Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Robert R Fayzullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Street, Kazan, 420088, Russian Federation
| | - Shubham Deolka
- Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Eugene Khaskin
- Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Serhii Vasylevskyi
- Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Pavan K Vardhanapu
- Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Shrinwantu Pal
- Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Julia R Khusnutdinova
- Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
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29
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Ho IW, Pan YL, Lai JI, Liu CY. Characteristics and outcome of systemic treatment for metastatic or unresectable thymic carcinoma: A single institution experience. Thorac Cancer 2024; 15:339-346. [PMID: 38149471 PMCID: PMC10834203 DOI: 10.1111/1759-7714.15198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/05/2023] [Accepted: 12/07/2023] [Indexed: 12/28/2023] Open
Abstract
BACKGROUND Thymic carcinoma is a rare disease with an incidence of around 0.5 cases per million with a poor prognosis. The aim of this study was to assess patient outcomes with advanced thymic carcinoma receiving first-line chemotherapy. METHODS In our retrospective cohort study, we included patients who underwent treatment for metastatic thymic carcinoma between January 2013 to December 2019 in our hospital. Overall survival, progression-free survival (PFS), objective response rates (ORR) and chemotherapy regimens were assessed and analyzed. RESULTS A total of 27 patients were retrospectively analyzed. All patients received a platinum (cisplatin or carboplatin) based regimen as first-line chemotherapy (29.6% received ADOC, 11.1% received PE, 40.7% received CP, 14.8% received CAP). The median PFS on first-line chemotherapy was 199 days. The response rate was 40.7%. Median overall survival (OS) was 585 days. Positive CD5 staining was associated with better PFS. CONCLUSION We highlight the critical role of platinum-based chemotherapy agents as a primary treatment modality in advanced thymic carcinoma, underscoring the efficacy of platinum as a first-line option for recurrent disease, even in cases previously treated with platinum. Additionally, our findings indicate that CD5 positivity could be associated with improved PFS, suggesting its potential as a prognostic marker.
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Affiliation(s)
- I-Wei Ho
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yu-Ling Pan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Internal Medicine, En Chu Kong hospital, New Taipei city, Taiwan
| | - Jiun-I Lai
- Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Comprehensive Breast Health Center, Taipei Veterans General Hospital, Taipei, Taiwan
- Center of Immuno-Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chun-Yu Liu
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
- Comprehensive Breast Health Center, Taipei Veterans General Hospital, Taipei, Taiwan
- Division of Transfusion Medicine, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
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30
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Morlo K, Olchowski R, Dobrowolski R. Optimization of Pt(II) and Pt(IV) Adsorption from a Water Solution on Biochar Originating from Honeycomb Biomass. Molecules 2024; 29:547. [PMID: 38276625 PMCID: PMC10820625 DOI: 10.3390/molecules29020547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 01/27/2024] Open
Abstract
Novel CO2- and H3PO4-modified biochars were successfully synthesized from raw honeycomb biomass. They were characterized via several instrumental techniques. The optimal Pt(II) and Pt(IV) adsorption onto the studied biochars was reached for the initial pH of 1.5 and a contact time of 5 min (Pt(II)) and 24-48 h (Pt(IV)). The highest static adsorption capacities for Pt(II) and Pt(IV) were obtained for the H3PO4-modified biochar: 47 mg g-1 and 35 mg g-1, respectively. The Freundlich model described the Pt(II) adsorption isotherms onto both materials and the Pt(IV) adsorption isotherm onto the CO2-activated material, and the Langmuir model was the best fitted to the Pt(IV) adsorption isotherm onto the H3PO4-activated biochar. The best medium for the quantitative desorption of the Pt form from the H3PO4-modified biochar was 1 mol L-1 thiourea in 1 mol L-1 HCl. The adsorption mechanism of both the studied ions onto the synthesized H3PO4-modified biochar was complex and should be further investigated. The H3PO4-modified biochar was successfully applied for the first time for Pt(IV) removal from a spent automotive catalyst leaching solution.
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Affiliation(s)
- Kinga Morlo
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 3, 20-031 Lublin, Poland;
| | - Rafał Olchowski
- Department of Pharmacology, Toxicology and Environmental Protection, Faculty of Veterinary Medicine, University of Life Sciences, Akademicka Sq. 12, 20-950 Lublin, Poland;
| | - Ryszard Dobrowolski
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 3, 20-031 Lublin, Poland;
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31
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Smith KL, Zhao F, Mayer IA, Tevaarwerk AJ, Garcia SF, Arteaga CL, Symmans WF, Park BH, Burnette BL, Makower DF, Block M, Morley KA, Jani CR, Mescher C, Dewani SJ, Brown-Glaberman U, Flaum LE, Mayer EL, Sikov WM, Rodler ET, DeMichele AM, Sparano JA, Wolff AC, Miller KD, Wagner LI. Adjuvant platinum versus capecitabine for residual, invasive, triple-negative breast cancer: Patient-reported outcomes in ECOG-ACRIN EA1131. Cancer 2024. [PMID: 38236702 DOI: 10.1002/cncr.35187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/19/2023] [Accepted: 11/20/2023] [Indexed: 03/07/2024]
Abstract
BACKGROUND Patient-reported outcomes (PROs) are a better tool for evaluating the experiences of patients who have symptomatic, treatment-associated adverse events (AEs) compared with clinician-rated AEs. The authors present PROs assessing health-related quality of life (HRQoL) and treatment-related neurotoxicity for adjuvant capecitabine versus platinum on the Eastern Cooperative Oncology Group-American College of Radiology Imaging Network (ECOG-ACRIN) EA1131 trial (ClinicalTrials.gov identifier NCT02445391). METHODS Participants completed the National Comprehensive Cancer Network Functional Assessment of Cancer Therapy-Breast Cancer Symptom Index (NFBSI-16) and the Functional Assessment of Cancer Therapy-Gynecologic Oncology Group neurotoxicity subscale (platinum arm only) at baseline, cycle 3 day 1 (C3D1), 6 months, and 15 months. Because of early termination, power was insufficient to test the hypothesis that HRQoL, as assessed by the NFBSI-16 treatment side-effect (TSE) subscale, would be better at 6 and 15 months in the capecitabine arm; all analyses were exploratory. Means were compared by using t-tests or the Wilcoxon rank-sum test, and proportions were compared by using the χ2 test. RESULTS Two hundred ninety-six of 330 eligible patients provided PROs. The mean NFBSI-16 TSE subscale score was lower for the platinum arm at baseline (p = .02; absolute difference, 0.6 points) and for the capecitabine arm at C3D1 (p = .04; absolute difference, 0.5 points), but it did not differ at other times. The mean change in TSE subscale scores differed between the arms from baseline to C3D1 (platinum arm, 0.15; capecitabine arm, -0.72; p = .03), but not from baseline to later time points. The mean decline in Functional Assessment of Cancer Therapy-Gynecologic Oncology Group neurotoxicity subscale scores exceeded the minimal meaningful change (1.38 points) from baseline to each subsequent time point (all p < .05). CONCLUSIONS Despite the similar frequency of clinician-rated AEs, PROs identified greater on-treatment symptom burden with capecitabine and complemented clinician-rated AEs by characterizing patients' experiences during chemotherapy.
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Affiliation(s)
- Karen L Smith
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland, USA
- Sibley Memorial Hospital, Washington, District of Columbia, USA
| | - Fengmin Zhao
- Dana Farber Cancer Institute, Eastern Cooperative Oncology Group-American College of Radiology Imaging Network Biostatistics Center, Boston, Massachusetts, USA
| | - Ingrid A Mayer
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | | | - Sofia F Garcia
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Carlos L Arteaga
- University of Texas Southwestern Simmons Cancer Center, Dallas, Texas, USA
| | - William F Symmans
- The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ben H Park
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Brian L Burnette
- Cancer Research of Wisconsin and Northern Michigan (CROWN) NCORP, Green Bay, Wisconsin, USA
| | | | - Margaret Block
- Alegent Health Bergan Mercy Medical Center, Omaha, Nebraska, USA
| | | | - Chirag R Jani
- Phoebe Putney Memorial Hospital, Albany, Georgia, USA
| | - Craig Mescher
- Metro-Minnesota Community Oncology Research Consortium, St Louis Park, Minnesota, USA
| | - Shabana J Dewani
- Columbus Oncology and Hematology Associates Inc., Columbus, Ohio, USA
| | - Ursa Brown-Glaberman
- University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico, USA
| | - Lisa E Flaum
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Erica L Mayer
- Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - William M Sikov
- Women and Infants Hospital of Rhode Island, Providence, Rhode Island, USA
| | - Eve T Rodler
- University of California, Davis, Davis, California, USA
| | - Angela M DeMichele
- University of Pennsylvania/Abramson Cancer Center, Philadelphia, Pennsylvania, USA
| | - Joseph A Sparano
- Icahn School of Medicine at Mount Sinai, Tisch Cancer Institute, New York, New York, USA
| | - Antonio C Wolff
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland, USA
| | - Kathy D Miller
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indianapolis, Indiana, USA
| | - Lynne I Wagner
- Wake Forest University Health Sciences, Winston-Salem, North Carolina, USA
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32
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Pawlik V, Zhao X, Figueras-Valls M, Wolter TJ, Hood ZD, Ding Y, Liu J, Chi M, Mavrikakis M, Xia Y. Thermal Stability of Au Rhombic Dodecahedral Nanocrystals Can Be Greatly Enhanced by Coating Their Surface with an Ultrathin Shell of Pt. Nano Lett 2024; 24:549-556. [PMID: 38174901 PMCID: PMC10797619 DOI: 10.1021/acs.nanolett.3c02680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/26/2023] [Accepted: 12/29/2023] [Indexed: 01/05/2024]
Abstract
Rhombic dodecahedral nanocrystals have been considered particularly difficult to synthesize because they are enclosed by {110}, a low-index facet with the greatest surface energy. Recently, we demonstrated the use of seed-mediated growth for the facile and robust synthesis of Au rhombic dodecahedral nanocrystals (AuRD). While the unique shape and surface structure of AuRD are desirable for potential applications in plasmonics and catalysis, respectively, their high surface energy makes them highly susceptible to thermal degradation. Here we demonstrate that it is feasible to greatly improve the thermal stability with some sacrifice to the plasmonic properties of the original AuRD by coating their surface with an ultrathin shell made of Pt. Our in situ electron microscopy analysis indicates that the ultrathin Pt coating can increase the thermal stability from 60 up to 450 °C, a trend that is also supported by the results from a computational study.
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Affiliation(s)
- Veronica
D. Pawlik
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Xiaohuan Zhao
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United
States
| | - Marc Figueras-Valls
- Department
of Chemical & Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Trenton J. Wolter
- Department
of Chemical & Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Zachary D. Hood
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Yong Ding
- School
of Material Science and Engineering, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Jingyue Liu
- Department
of Physics, Arizona State University, Tempe, Arizona 85287, United
States
| | - Miaofang Chi
- Materials
Science and Technology Division, Oak Ridge
National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Manos Mavrikakis
- Department
of Chemical & Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Younan Xia
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United
States
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33
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Wakabayashi S, Oh Y, Nakayama H, Wang J, Kiwa T. Ultrathin Platinum Film Hydrogen Sensors with a Twin-T Type Notch Filter Circuit. Sensors (Basel) 2024; 24:548. [PMID: 38257641 PMCID: PMC10819346 DOI: 10.3390/s24020548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 12/31/2023] [Accepted: 01/12/2024] [Indexed: 01/24/2024]
Abstract
In recent years, hydrogen energy has garnered attention as a potential solution for mitigating greenhouse gas emissions. However, concerns regarding the inherent risk of hydrogen gas leakage and potential explosions have necessitated the development of advanced sensors. Within our research group, we have innovated an ultrathin platinum (Pt) film hydrogen sensor that gauges resistance changes in Pt thin films when exposed to hydrogen gas. Notably, the sensitivity of each sensor is contingent upon the thickness of the Pt film. To address the challenge of detecting hydrogen using multiple sensors, we integrated the ultrathin Pt film as a resistance element within a twin-T type notch filter. This filter exhibits a distinctive reduction in output signals at a specific frequency. The frequency properties of the notch filter dynamically alter with changes in the resistance of the Pt film induced by hydrogen exposure. Consequently, the ultrathin Pt film hydrogen sensor monitors output signal variations around the notch frequency, responding to shifts in frequency properties. This innovative approach enables the electrical control of sensor sensitivity by adjusting the operating frequency in proximity to the notch frequency. Additionally, the simultaneous detection of hydrogen by multiple sensors was successfully achieved by interconnecting sensors with distinct notch frequencies in series.
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Affiliation(s)
| | | | | | | | - Toshihiko Kiwa
- Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan; (S.W.); (Y.O.); (H.N.); (J.W.)
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34
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Torres-Castanedo CG, Buchholz DB, Pham T, Zheng L, Cheng M, Dravid VP, Hersam MC, Bedzyk MJ. Ultrasmooth Epitaxial Pt Thin Films Grown by Pulsed Laser Deposition. ACS Appl Mater Interfaces 2024; 16:1921-1929. [PMID: 38123145 DOI: 10.1021/acsami.3c16065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Platinum (Pt) thin films are useful in applications requiring high-conductivity electrodes with excellent thermal and chemical stability. Ultrasmooth and epitaxial Pt thin films with single-crystalline domains have the added benefit of providing ideal templates for the subsequent growth of heteroepitaxial structures. Here, we grow epitaxial Pt (111) electrodes (ca. 30 nm thick) on sapphire (α-Al2O3 (0001)) substrates with pulsed laser deposition. This versatile technique allows control of the growth process and fabrication of films with carefully tailored parameters. X-ray scattering, atomic-force microscopy, and electron microscopy provide structural characterization of the films. Various gaseous atmospheres and temperatures were explored to achieve epitaxial growth of films with low roughness. A two-step (500 °C/300 °C) growth process was developed, yielding films with improved epitaxy without compromising roughness. The resulting films possess ultrasmooth interfaces (<3 Å) and high electrical conductivity (6.9 × 106 S/m). Finally, Pt films were used as current collectors and templates to grow lithium manganese oxide (LiMn2O4 (111)) epitaxial thin films, a cathode material used in Li-ion batteries. Using a solid-state ionogel electrolyte, the films were highly stable when electrochemically cycled in the 3.5-4.3 V vs Li/Li+ range.
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Affiliation(s)
- Carlos G Torres-Castanedo
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - D Bruce Buchholz
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Thang Pham
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Liyang Zheng
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Matthew Cheng
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Vinayak P Dravid
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Northwestern University Atomic and Nanoscale Characterization Experimental Center (NUANCE), Northwestern University,Evanston, Illinois 60208, United States
| | - Mark C Hersam
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Michael J Bedzyk
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, United States
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35
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Estirado S, Díaz-García D, Fernández-Delgado E, Viñuelas-Zahínos E, Gómez-Ruiz S, Prashar S, Rodríguez AB, Luna-Giles F, Pariente JA, Espino J. Melatonin Derivative-Conjugated Formulations of Pd(II) and Pt(II) Thiazoline Complexes on Mesoporous Silica to Enhance Cytotoxicity and Apoptosis against HeLa Cells. Pharmaceutics 2024; 16:92. [PMID: 38258103 PMCID: PMC10821514 DOI: 10.3390/pharmaceutics16010092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/21/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
The search for alternatives to cisplatin has led to the development of new metal complexes where thiazoline derivatives based on platinum(II) and palladium(II) stand out. In this sense, the Pt(II) and Pd(II) complexes coordinated with the thiazoline derivative ligand 2-(3,4-dichlorophenyl)imino-N-(2-thiazolin-2-yl)thiazolidine (TdTn), with formula [PtCl2(TdTn)] and [PdCl2(TdTn)], have previously shown good results against several cancer lines; however, in this work, we have managed to improve their activity by supporting them on mesoporous silica nanoparticles (MSN). The incorporation of metal compounds with a melatonin derivative (5-methoxytryptamine, 5MT), which is a well-known antioxidant and apoptosis inducer in different types of cancer, has been able to increase the cytotoxic activity of both MSN-supported and isolated complexes with only a very low amount (0.35% w/w) of this antioxidant. The covalently functionalized systems that have been synthesized are able to increase selectivity as well as accumulation in HeLa cells. The final materials containing the metal complexes and 5MT (MSN-5MT-PtTdTn and MSN-5MT-PdTdTn) required up to nine times less metal to achieve the same cytotoxic activity than their corresponding non-formulated counterparts did, thus reducing the potential side effects caused by the use of the free metal complexes.
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Affiliation(s)
- Samuel Estirado
- Grupo de Investigación Neuroinmunofisiología y Crononutrición, Departamento de Fisiología, Facultad de Ciencias, Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain; (S.E.); (E.F.-D.); (A.B.R.); (J.A.P.)
| | - Diana Díaz-García
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, Móstoles, 28933 Madrid, Spain; (D.D.-G.); (S.P.)
| | - Elena Fernández-Delgado
- Grupo de Investigación Neuroinmunofisiología y Crononutrición, Departamento de Fisiología, Facultad de Ciencias, Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain; (S.E.); (E.F.-D.); (A.B.R.); (J.A.P.)
| | - Emilio Viñuelas-Zahínos
- Grupo de Investigación Química de Coordinación, Departamento de Química Orgánica e Inorgánica, Facultad de Ciencias, Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain; (E.V.-Z.); (F.L.-G.)
| | - Santiago Gómez-Ruiz
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, Móstoles, 28933 Madrid, Spain; (D.D.-G.); (S.P.)
| | - Sanjiv Prashar
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, Móstoles, 28933 Madrid, Spain; (D.D.-G.); (S.P.)
| | - Ana B. Rodríguez
- Grupo de Investigación Neuroinmunofisiología y Crononutrición, Departamento de Fisiología, Facultad de Ciencias, Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain; (S.E.); (E.F.-D.); (A.B.R.); (J.A.P.)
| | - Francisco Luna-Giles
- Grupo de Investigación Química de Coordinación, Departamento de Química Orgánica e Inorgánica, Facultad de Ciencias, Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain; (E.V.-Z.); (F.L.-G.)
| | - José A. Pariente
- Grupo de Investigación Neuroinmunofisiología y Crononutrición, Departamento de Fisiología, Facultad de Ciencias, Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain; (S.E.); (E.F.-D.); (A.B.R.); (J.A.P.)
| | - Javier Espino
- Grupo de Investigación Neuroinmunofisiología y Crononutrición, Departamento de Fisiología, Facultad de Ciencias, Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain; (S.E.); (E.F.-D.); (A.B.R.); (J.A.P.)
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36
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Xu S, Luo W, Zhu M, Zhao L, Gao L, Liang H, Zhang Z, Yang F. Human Serum Albumin- Platinum(II) Agent Nanoparticles Inhibit Tumor Growth Through Multimodal Action Against the Tumor Microenvironment. Mol Pharm 2024; 21:346-357. [PMID: 38015620 DOI: 10.1021/acs.molpharmaceut.3c00881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
To overcome the limitations of traditional platinum (Pt)-based drugs and further improve the targeting ability and therapeutic efficacy in vivo, we proposed to design a human serum albumin (HSA)-Pt agent complex nanoparticle (NP) for cancer treatment by multimodal action against the tumor microenvironment. We not only synthesized a series of Pt(II) di-2-pyridone thiosemicarbazone compounds and obtained a Pt(II) agent [Pt(Dp44mT)Cl] with significant anticancer activity but also successfully constructed a novel HSA-Pt(Dp44mT) complex nanoparticle delivery system. The structure of the HSA-Pt(Dp44mT) complex revealed that Pt(Dp44mT)Cl binds to the IIA subdomain of HSA and coordinates with His-242. The HSA-His242-Pt-Dp44mT NPs had an obvious effect on the inhibition of tumor growth, which was superior to that of Dp44mT and Pt(Dp44mT)Cl, and they had almost no toxicity. In addition, the HSA-His242-Pt-Dp44mT NPs were found to kill cancer cells by inducing apoptosis, autophagy, and inhibiting angiogenesis.
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Affiliation(s)
- Shihang Xu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Weicong Luo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Minghui Zhu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Lei Zhao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Lijuan Gao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Zhenlei Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Feng Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
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37
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Zhong M, Yang J, Xu M, Ren S, Chen X, Wang C, Gao M, Lu X. Significantly Enhanced Energy-Saving H 2 Production Coupled with Urea Oxidation by Low- and Non-Pt Anchored on NiS-Based Conductive Nanofibers. Small 2024; 20:e2304782. [PMID: 37649181 DOI: 10.1002/smll.202304782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/08/2023] [Indexed: 09/01/2023]
Abstract
Rational designing electrocatalysts is of great significance for realizing high-efficiency H2 production in the water splitting process. Generally, reducing the usage of precious metals and developing low-potential nucleophiles oxidation reaction to replace anodic oxygen evolution reaction (OER) are efficient strategies to promote H2 generation. Here, NiS-coated nickel-carbon nanofibers (NiS@Ni-CNFs) are prepared for low-content Pt deposition (Pt-NiS@Ni-CNFs) to attain the alkaline HER catalyst. Due to the reconfiguration of NiS phase and synergistic effect between Pt and nickel sulfides, the Pt-NiS@Ni-CNFs catalyst shows a high mass activity of 2.74-fold of benchmark Pt/C sample. In addition, the NiS@Ni-CNFs catalyst performs a superior urea oxidation reaction (UOR) activity with the potential of 1.366 V versus reversible hydrogen electrode (RHE) at 10 mA cm-2 , which demonstrates the great potential in the replacement of OER. Thus, a urea-assisted water splitting electrolyzer of Pt-NiS@Ni-CNFs (cathode)||NiS@Ni-CNFs (anode) is constructed to exhibit small voltages of 1.44 and 1.65 V to reach 10 and 100 mA cm-2 , which is much lower than its overall water splitting process, and presents a 6.5-fold hydrogen production rate enhancement. This work offers great opportunity to design new catalysts toward urea-assisted water splitting with significantly promoted hydrogen productivity and reduced energy consumption.
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Affiliation(s)
- Mengxiao Zhong
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Junyu Yang
- Division of Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Meijiao Xu
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Siyu Ren
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Xiaojie Chen
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Ce Wang
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Mingbin Gao
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Xiaofeng Lu
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
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38
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Multem AJH, Delaney AR, Kroeger AA, Coote ML, Colebatch AL. Utilising a Proton-Responsive 1,8-Naphthyridine Ligand for the Synthesis of Bimetallic Palladium and Platinum Complexes. Chem Asian J 2023:e202301071. [PMID: 38161148 DOI: 10.1002/asia.202301071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/03/2024]
Abstract
We present four proton-responsive palladium and platinum complexes, [MCl2 (R PONNHO)] (M=Pd, Pt; R=i Pr, t Bu) synthesised by complexation of PdCl2 or PtCl2 (COD) with the 1,8-naphthyridine ligand R PONNHO. Deprotonation of [MCl2 (tBu PONNHO)] switches ligand coordination from mono- to dinucleating, offering a synthetic pathway to bimetallic PdII and PtII complexes [M2 Cl2 (tBu PONNO)2 ]. Two-electron reduction gives planar MI -MI complexes [M2 (tBu PONNO)2 ] (M=Pd, Pt) containing a metal-metal bond. In contrast to the related nickel system that forms a metallophosphorane [Ni2 (tBu PONNOPONNO)], an unusual phosphinite binding mode is observed in [M2 (tBu PONNO)2 ] containing close phosphinite-naphthyridinone P⋅⋅⋅O interactions, which is investigated spectroscopically, crystallographically and computationally. The presented proton-responsive and structurally-responsive R PONNHO and bimetallic R PONNO complexes offer a novel platform for future explorations of metal-ligand and metal-metal cooperativity with palladium and platinum.
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Affiliation(s)
- Arie J H Multem
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Andie R Delaney
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Asja A Kroeger
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
- Institute for Nanoscale Science & Technology, Flinders University, Adelaide, South Australia, 5042, Australia
| | - Michelle L Coote
- Institute for Nanoscale Science & Technology, Flinders University, Adelaide, South Australia, 5042, Australia
| | - Annie L Colebatch
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
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Li L, Jiang C, Li L. A Comparative Study on the Effect of Substrate Structure on Electrochemical Performance and Stability of Electrodeposited Platinum and Iridium Oxide Coatings for Neural Electrodes. Micromachines (Basel) 2023; 15:70. [PMID: 38258189 PMCID: PMC10821385 DOI: 10.3390/mi15010070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/20/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024]
Abstract
Implantable electrodes are crucial for stimulation safety and recording quality of neuronal activity. To enhance their electrochemical performance, electrodeposited nanostructured platinum (nanoPt) and iridium oxide (IrOx) have been proposed due to their advantages of in situ deposition and ease of processing. However, their unstable adhesion has been a challenge in practical applications. This study investigated the electrochemical performance and stability of nanoPt and IrOx coatings on hierarchical platinum-iridium (Pt-Ir) substrates prepared by femtosecond laser, compared with the coatings on smooth Pt-Ir substrates. Ultrasonic testing, agarose gel testing, and cyclic voltammetry (CV) testing were used to evaluate the coatings' stability. Results showed that the hierarchical Pt-Ir substrate significantly enhanced the charge-storage capacity of electrodes with both coatings to more than 330 mC/cm2, which was over 75 times that of the smooth Pt-Ir electrode. The hierarchical substrate could also reduce the cracking of nanoPt coatings after ultrasonic, agarose gel and CV testing. Although some shedding was observed in the IrOx coating on the hierarchical substrate after one hour of sonication, it showed good stability in the agarose gel and CV tests. Stable nanoPt and IrOx coatings may not only improve the electrochemical performance but also benefit the function of neurobiochemical detection.
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Affiliation(s)
- Linze Li
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China
| | - Changqing Jiang
- National Engineering Research Center of Neuromodulation, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
| | - Luming Li
- National Engineering Research Center of Neuromodulation, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
- IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China
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Brocha Silalahi RP, Liang H, Jo Y, Liao JH, Chiu TH, Wu YY, Wang X, Kahlal S, Wang Q, Choi W, Lee D, Saillard JY, Liu CW. Hydride-Containing Pt-doped Cu-rich Nanoclusters: Synthesis, Structure, and Electrocatalytic Hydrogen Evolution. Chemistry 2023:e202303755. [PMID: 38149882 DOI: 10.1002/chem.202303755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/26/2023] [Accepted: 12/27/2023] [Indexed: 12/28/2023]
Abstract
A structurally precise hydride-containing Pt-doped Cu-rich nanocluster [PtH2 Cu14 {S2 P(Oi Pr)2 }6 (CCPh)6 ] (1) has been synthesized. It consists of a bicapped icosahedral Cu14 cage that encapsulates a linear PtH2 unit. Upon the addition of two equivalents of CF3 COOH to 1, two hydrido clusters are isolated. These clusters are [PtHCu11 {S2 P(Oi Pr)2 }6 (CCPh)4 ] (2), which is a vertex-missing Cu11 cuboctahedron encaging a PtH moiety, and [PtH2 Cu11 {S2 P(Oi Pr)2 }6 (CCPh)3 ] (3), a distorted 3,3,4,4,4-pentacapped trigonal prismatic Cu11 cage enclosing a PtH2 unit. The electronic structure of 2, analyzed by Density Functional Theory, is a 2e superatom. The electrocatalytic activities of 1-3 for hydrogen evolution reaction (HER) were compared. Notably, Cluster 2 exhibited an exceptionally excellent HER activity within metal nanoclusters, with an onset potential of -0.03 V (at 10 mA cm-2 ), a Tafel slope of 39 mV dec-1 , and consistent HER activity throughout 3000 cycles in 0.5 M H2 SO4 . Our study suggests that the accessible central Pt site plays a crucial role in the remarkable HER activity and may provide valuable insights for establishing correlations between catalyst structure and HER activity.
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Affiliation(s)
- Rhone P Brocha Silalahi
- Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401, Taiwan R. O. C
| | - Hao Liang
- Univ Rennes CNRS, ISCR-UMR 6226, F-35000, Rennes, France
| | - Yongsung Jo
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jian-Hong Liao
- Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401, Taiwan R. O. C
| | - Tzu-Hao Chiu
- Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401, Taiwan R. O. C
| | - Ying-Yann Wu
- Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401, Taiwan R. O. C
| | - Xiaoping Wang
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, United States
| | - Samia Kahlal
- Univ Rennes CNRS, ISCR-UMR 6226, F-35000, Rennes, France
| | - Qi Wang
- Univ Rennes CNRS, ISCR-UMR 6226, F-35000, Rennes, France
| | - Woojun Choi
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Dongil Lee
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | | | - C W Liu
- Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401, Taiwan R. O. C
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Zwimpfer TA, Scherer K, Schötzau A, Heinzelmann‐Schwarz V, Hartmann K, Vetter M, Montavon C. Desensitization in patients with hypersensitivity to platinum and taxane in gynecological cancers. Cancer Med 2023; 13:e6840. [PMID: 38140783 PMCID: PMC10807606 DOI: 10.1002/cam4.6840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/29/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
BACKGROUND Exposure to paclitaxel and carboplatin has the risk of developing hypersensitivity reactions (HSRs), which could necessitate using less effective treatments to avoid anaphylaxis. Desensitization to platinum and taxane HSRs can be used to complete chemotherapy according to the standard regimen; therefore, this study investigated rates and benefits of successful desensitization in patients with gynecologic cancers (GC). METHODS We collected data from 241 patients with GC who had at least one cycle of platinum or taxane chemotherapy. The rate of HSRs and successful desensitization were evaluated, and an outcome analysis was conducted. RESULTS The rate of HSRs to platinum and taxane was 6.39% and 13.07%, respectively. We observed a 100% success rate of desensitization in our cohort. Patients with HSR were significantly younger (57.1 vs. 64.9 years, p = 0.030) in the taxane cohort. Importantly, the overall survival (OS) of patients with platinum and taxane HSRs who underwent desensitization was comparable to that of patients with no HSRs (platinum vs. controls; median OS 60.36 vs. 60.39 months, p = 0.31; taxane vs. controls; OS 80.29 vs. 60.00 months, p = 0.59). CONCLUSION Thus, we show that desensitization for platinum and taxane HSRs is safe and effective, resulting in an outcome that is well comparable to patients without HSR. Based on these observations, desensitization procedures might be considered as standard of care before switching to less effective treatment for patients with GC.
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Affiliation(s)
- Tibor A. Zwimpfer
- Department of Gynecology and Gynecological Oncology, Hospital for WomenUniversity Hospital BaselBaselSwitzerland
- Gynecological Cancer CenterUniversity Hospital BaselBaselSwitzerland
- Peter MacCallum Cancer CenterEast MelbourneVictoriaAustralia
| | - Kathrin Scherer
- Division of Allergy Unit, Department of DermatologyCantonal Hospital AarauAarauSwitzerland
| | - Andreas Schötzau
- Department of Gynecology and Gynecological Oncology, Hospital for WomenUniversity Hospital BaselBaselSwitzerland
| | - Viola Heinzelmann‐Schwarz
- Department of Gynecology and Gynecological Oncology, Hospital for WomenUniversity Hospital BaselBaselSwitzerland
- Gynecological Cancer CenterUniversity Hospital BaselBaselSwitzerland
| | - Karin Hartmann
- Department of DermatologyUniversity Hospital BaselBaselSwitzerland
| | - Marcus Vetter
- Cancer Center, Cantonal Hospital BasellandMedical University ClinicLiestalSwitzerland
| | - Céline Montavon
- Department of Gynecology and Gynecological Oncology, Hospital for WomenUniversity Hospital BaselBaselSwitzerland
- Gynecological Cancer CenterUniversity Hospital BaselBaselSwitzerland
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Gan K, Ma D. Hypersensitivity reaction to nedaplatin: A case report and literature review. Medicine (Baltimore) 2023; 102:e36690. [PMID: 38115255 PMCID: PMC10727523 DOI: 10.1097/md.0000000000036690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 11/27/2023] [Indexed: 12/21/2023] Open
Abstract
RATIONALE Although rare, systemic hypersensitivity reactions to nedaplatin chemotherapy arise rapidly and can be life-threatening. The causes are unclear, and multiple potential mechanisms exist. Here, we report a case of systemic hypersensitivity reaction to nedaplatin and review the literature to establish a recommended protocol. PATIENT CONCERNS A 62-year-old man was being treated for squamous lung cancer with multiple metastases. On the first day of chemotherapy, 5 minutes after nedaplatin infusion, he developed panic, shortness of breath, and dyspnea with rapid heart rate, reduced oxygen saturation, and elevated blood pressure. DIAGNOSES The symptoms indicated that the patient had developed a severe hypersensitivity reaction to nedaplatin, which could be life-threatening without immediate intervention. INTERVENTION Nedaplatin was discontinued, and he was treated with oxygen, ECG monitoring, finger pulse oximeter monitoring, 10 mg dexamethasone sodium phosphate injected intravenously, 20 mg diphenhydramine hydrochloride injected intramuscularly, and 40 mg methylprednisolone sodium succinate injected intravenously. OUTCOME His allergic symptoms resolved, and once his vital signs stabilized, he was given 5 mg oral desloratadine once daily and 10 mg oral ebastine once daily to alleviate the effects of the allergic reaction. Once his vital signs remained stable without any special supportive treatment, he was discharged from the hospital. His chemotherapy regimen was discontinued, with no plan for a follow-up treatment due to the possibility of cross-allergic reactions between platinum-based drugs. LESSONS Clinical use of nedaplatin should be monitored and managed intensively for prevention and treatment of hypersensitivity reactions. Care should be taken to control the titration rate during infusion while closely monitoring vital signs. Clinical staff should be prepared to treat allergic symptoms as soon as they appear. The acute phase should involve immediate discontinuation of the drug; intravenous saline infusion for volume expansion; rapid assessment of circulation, airway, respiration, state of consciousness, and skin condition; and administration of oxygen, antihistamines, and epinephrine as appropriate for anaphylaxis. More randomized clinical trials are needed to elucidate appropriate preventative and management strategies to improve patient safety and support their successful completion of clinical treatment programs.
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Affiliation(s)
- Kelun Gan
- North Sichuan Medical College, Nanchong, Sichuan Province, China
| | - Daiyuan Ma
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan Province, China
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La Sorda M, Fossati M, Graffeo R, Ferraironi M, De Rosa MC, Buzzonetti A, Righino B, Zampetti N, Fattorossi A, Nucera E, Aruanno A, Ferrandina G, Apostol AI, Buonomo A, Scambia G, Sanguinetti M, Battaglia A. A Modified Basophil Activation Test for the Clinical Management of Immediate Hypersensitivity Reactions to Paclitaxel: A Proof-of-Concept Study. Cancers (Basel) 2023; 15:5818. [PMID: 38136365 PMCID: PMC10741873 DOI: 10.3390/cancers15245818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/01/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
Immediate hypersensitivity reactions (iHSRs) to taxanes are observed in 6% and 4% of gynecologic and breast cancer patients, respectively. Drug desensitization is the only option, as no comparable alternative therapy is available. Surfactants in the taxane formulation have been implicated in the immunopathogenesis of iHSRs, although sporadic skin test (ST) positivity and iHSRs to nab-paclitaxel have suggested the involvement of the taxane moiety and/or IgE-mediated pathomechanisms. In vitro diagnostic tests might offer insights into mechanisms underlying iHSRs to taxanes. The aim of the present study was to address this unmet need by developing a novel basophil activation test (BAT). The study included patients (n = 31) undergoing paclitaxel/carboplatin therapy. Seventeen patients presented with iHSRs to paclitaxel (iHSR-Taxpos), and eleven were tolerant (iHSR-Taxneg). Fourteen patients presented with iHSRs to carboplatin (iHSR-Plpos), and fourteen were tolerant (iHSR-Plneg). The BAT median stimulation index (SI) values were 1.563 (range, 0.02-4.11; n = 11) and -0.28 (range -4.88-0.07, n = 11) in iHSR-Taxpos and iHSR-Taxneg, respectively. The BAT median SI values were 4.45 (range, 0.1-26.7; n = 14) and 0 (range, -0.51-1.65; n = 12) in iHSR-Plpos and iHSR-Plneg, respectively. SI levels were not associated with iHSR severity grading. Comparing BAT results in iHSR-Taxpos and iHSR-Taxneg showed the area under the receiver operator characteristic (ROC) curve to be 0.9752 (p = 0.0002). The cutoff calculated by the maximized likelihood ratio identified 90.91% of iHSR-Taxpos patients and 90.91% of iHSR-Taxneg patients. Comparing BAT results for iHSR-Plpos and iHSR-Plneg showed the area under the ROC curve to be 0.9286 (p = 0.0002). The cutoff calculated by the maximized likelihood ratio identified 78.57% of iHSR-Plpos patients and 91.67% of iHSR-Plneg patients. Most iHSR-Taxpos patients for which ST was available (10/11) scored ST-negative and BAT-positive, whereas most iHSR-Plpos patients for which ST was available (14/14) scored both BAT- and ST-positive. This suggested the intervention of non-IgE-mediated mechanisms in iHSR-Taxpos patients. Consistent with this view, an in silico molecular docking analysis predicted the high affinity of paclitaxel to the degranulation-competent MRGPRX2 receptor. This hypothesis warrants further in vitro investigations. In conclusion, the present study provides preliminary proof-of-concept evidence that this novel BAT has potential utility in understanding mechanisms underlying iHSRs to taxanes.
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Affiliation(s)
- Marilena La Sorda
- Microbiology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (M.L.S.); (R.G.); (M.S.)
| | - Marco Fossati
- Cytometry Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (M.F.); (A.B.); (N.Z.); (A.F.)
| | - Rosalia Graffeo
- Microbiology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (M.L.S.); (R.G.); (M.S.)
| | - Manuela Ferraironi
- Microbiology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (M.L.S.); (R.G.); (M.S.)
| | - Maria Cristina De Rosa
- Institute of Chemical Sciences and Technologies ‘‘Giulio Natta’’ (SCITEC)-CNR, 00168 Rome, Italy; (M.C.D.R.); (B.R.)
| | - Alexia Buzzonetti
- Cytometry Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (M.F.); (A.B.); (N.Z.); (A.F.)
| | - Benedetta Righino
- Institute of Chemical Sciences and Technologies ‘‘Giulio Natta’’ (SCITEC)-CNR, 00168 Rome, Italy; (M.C.D.R.); (B.R.)
| | - Nicole Zampetti
- Cytometry Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (M.F.); (A.B.); (N.Z.); (A.F.)
| | - Andrea Fattorossi
- Cytometry Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (M.F.); (A.B.); (N.Z.); (A.F.)
| | - Eleonora Nucera
- Allergy Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (E.N.); (A.A.); (A.B.)
| | - Arianna Aruanno
- Allergy Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (E.N.); (A.A.); (A.B.)
| | - Gabriella Ferrandina
- Gynecology Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (G.F.); (G.S.)
| | - Adriana Ionelia Apostol
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy;
| | - Alessandro Buonomo
- Allergy Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (E.N.); (A.A.); (A.B.)
| | - Giovanni Scambia
- Gynecology Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (G.F.); (G.S.)
| | - Maurizio Sanguinetti
- Microbiology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (M.L.S.); (R.G.); (M.S.)
| | - Alessandra Battaglia
- Department of Life Science and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
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Louisa M, Wanafri E, Arozal W, Sandhiutami NMD, Basalamah AM. Nanocurcumin preserves kidney function and haematology parameters in DMBA-induced ovarian cancer treated with cisplatin via its antioxidative and anti-inflammatory effect in rats. Pharm Biol 2023; 61:298-305. [PMID: 36708211 PMCID: PMC9888479 DOI: 10.1080/13880209.2023.2166965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 11/25/2022] [Accepted: 01/05/2023] [Indexed: 06/18/2023]
Abstract
CONTEXT Cisplatin, as a first-line treatment for ovarian cancer, is associated with debilitating adverse effects, including nephrotoxic and haematotoxic effects. OBJECTIVE This study determines whether nanocurcumin, combined with cisplatin, would give additional benefit to kidney function and haematological parameters in rats with ovarian cancer. MATERIALS AND METHODS Twenty-five Wistar rats were divided into five untreated rats and 20-dimethylbenz(a)anthracene (DMBA)-induced ovarian cancer rats. The 20 ovarian cancer rats were divided into four treatment groups: vehicle, cisplatin, cisplatin-curcumin, and cisplatin-nanocurcumin. Cisplatin was given at the dose of 4 mg/kg BW once weekly, while curcumin or nanocurcumin was administered at 100 mg/kg BW daily for four weeks. At the end of treatment, we analysed kidney function, haematological parameters, and inflammatory and oxidative stress markers from plasma. RESULTS Nanocurcumin alleviates the increase in kidney function markers and abnormalities in haematological indices in rats treated with cisplatin. Compared to cisplatin-treated rats, plasma urea levels decreased from 66.4 to 47.7 mg/dL, creatinine levels lowered from 0.87 to 0.82 mg/dL, and neutrophil gelatinase-associated lipocalin (NGAL) levels declined from 8.51 to 3.59 mIU/mg protein. Furthermore, the therapy increased glutathione activities (from 2.02 to 3.23 U/µL), reduced lipid peroxidation (from 0.54 to 0.45 nmol/mL), and decreased plasma TNF-α (from 270.6 to 217.8 pg/mL). CONCLUSIONS Cisplatin with nanocurcumin in an ovarian cancer rat model may provide additional benefits as a preventive agent against renal impairment and cisplatin-induced haematological toxicity. However, further research is required to prove that using nanocurcumin for a more extended time would not affect its anticancer properties.
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Affiliation(s)
- Melva Louisa
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Erico Wanafri
- Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Wawaimuli Arozal
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
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45
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Pritchard C, Al-Nadaf S, Rebhun RB, Willcox JL, Skorupski KA, Lejeune A. Efficacy and toxicity of carboplatin in the treatment of macroscopic mesenchymal neoplasia in dogs. Vet Comp Oncol 2023; 21:717-725. [PMID: 37705417 DOI: 10.1111/vco.12936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/21/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023]
Abstract
Palliative chemotherapy options for dogs with macroscopic non-osseous mesenchymal tumours are limited. The purpose of this study was to assess the response rate of these tumours to carboplatin chemotherapy. Medical records of 28 dogs treated with carboplatin for macroscopic mesenchymal neoplasia between 1990 and 2022 were retrospectively reviewed. Sixteen dogs with soft tissue sarcoma and 12 dogs with haemangiosarcoma were included. Responses observed included one complete response and three partial responses, for an overall response rate of 14.2% (4/28) and median time to progression of 42 days (range 21-259 days). Responses were only seen in patients with haemangiosarcoma, for a response rate of 33.3% (4/12) and median time to progression for responders of 103 days (range 39-252 days). Median time to progression for dogs with metastatic disease was similar to those with only local disease (distant median: 44 days; local median: 23 days, p = 0.56). Dogs with chemotherapy-naïve disease were compared to dogs having received previous chemotherapy treatment and had a median time to progression of 75 days and 40.5 days respectively (p = 0.13). Twenty-two dogs experienced 48 adverse events, with most being grade 1 or 2 (79%). Carboplatin was well tolerated, with variable macroscopic anti-tumour activity and short response duration. Carboplatin may be an acceptable rescue option for dogs with macroscopic haemangiosarcoma, especially those patients that cannot receive doxorubicin.
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Affiliation(s)
- Céleste Pritchard
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA
| | - Sami Al-Nadaf
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA
| | - Robert B Rebhun
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA
| | | | - Katherine A Skorupski
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA
| | - Amandine Lejeune
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA
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46
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Lin A, Mou W, Zhu L, Yang T, Zhou C, Zhang J, Luo P. Mutations in the DNA polymerase binding pathway affect the immune microenvironment of patients with small-cell lung cancer and enhance the efficacy of platinum-based chemotherapy. Cancer Innov 2023; 2:500-512. [PMID: 38125769 PMCID: PMC10730006 DOI: 10.1002/cai2.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/15/2023] [Accepted: 05/18/2023] [Indexed: 12/23/2023]
Abstract
Background Small-cell lung cancer (SCLC) is characterized by its high malignancy and is associated with a poor prognosis. In the early stages of the disease, platinum-based chemotherapy is the recommended first-line treatment and has demonstrated efficacy. However, SCLC is prone to recurrence and is generally resistant to chemotherapy in its later stages. Methods Here, we collected samples from SCLC patients who received platinum-based chemotherapy, performed genomic and transcriptomic analyses, and validated our results with publicly available data. Results SCLC patients with DNA polymerase binding pathway mutations had an improved prognosis after platinum chemotherapy compared with patients without such mutations. Patients in the mutant (MT) group had higher infiltration of T cells, B cells, and M1 macrophages compared with patients without DNA polymerase binding pathway mutations. Conclusions DNA polymerase binding pathway mutations can be used as prognostic markers for platinum-based chemotherapy in SCLC.
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Affiliation(s)
- Anqi Lin
- Department of Oncology, Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdongChina
| | - Weiming Mou
- Department of Oncology, Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdongChina
- The First Clinical Medical SchoolSouthern Medical UniversityGuangzhouGuangdongChina
- Department of Urology, Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Lingxuan Zhu
- The First Clinical Medical SchoolSouthern Medical UniversityGuangzhouGuangdongChina
- Department of Etiology and CarcinogenesisNational Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Tao Yang
- The First Clinical Medical SchoolSouthern Medical UniversityGuangzhouGuangdongChina
- Department of Medical OncologyNational Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Chaozheng Zhou
- The First Clinical Medical SchoolSouthern Medical UniversityGuangzhouGuangdongChina
| | - Jian Zhang
- Department of Oncology, Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdongChina
| | - Peng Luo
- Department of Oncology, Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdongChina
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47
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Zechovsky J, Kertesz E, Erben M, Hejda M, Jambor R, Ruzicka A, Benko Z, Dostál L. Palladium(II) and Platinum(II) Bis(Stibinidene) Complexes with Intramolecular Hydrogen-Bond Enforced Geometries. Chempluschem 2023:e202300573. [PMID: 38015161 DOI: 10.1002/cplu.202300573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/20/2023] [Accepted: 11/28/2023] [Indexed: 11/29/2023]
Abstract
The coordination capability of two N,C,N pincer coordinated stibinidenes, i.e. bis(imino)- [2,6-(DippN=CH)2C6H3]Sb (1) or imino-amino- [2-(DippN=CH)-6-(DippNHCH2)C6H3]Sb (2) toward palladium(II) and platinum(II) centers was examined. In the course of this study, seven new square-planar bis(stibinidene) complexes were synthesized and characterized by NMR, IR, Raman, UV-vis spectroscopy and single crystal (sc)-X-ray diffraction analysis. In all cases, both stibinidene ligands 1 or 2 adopt trans positions, but differ significantly in the torsion angle describing mutual orientation of aromatic rings of the stibinidenes along the Sb-Pd/Pt-Sb axes. Furthermore, majority of complexes form isomers in solution most probably due to a hindered rotation around Sb-Pd/Pt bonds caused by bulkiness of 1 and 2. This phenomenon also seems to be influenced by the absence/presence of a pendant -CH2NH- group in 1/2 that is able to form intramolecular hydrogen bonds with the adjacent chlorine atom(s) attached to the metal centers. The whole problem was subjected to a theoretical study focusing a role of hydrogen bonds in structure architecture of the complexes. To describe the UV-vis spectra of these highly coloured complexes, TD-DFT calculations were employed. These outline differences between the stibinidene ligands, the transition metals as well as between the charge of the complexes (neutral or anionic).
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Affiliation(s)
- Jan Zechovsky
- University of Pardubice: Univerzita Pardubice, Department of General and Inorganic Chemistry, CZECH REPUBLIC
| | - Erik Kertesz
- Budapest University of Technology and Economics: Budapesti Muszaki es Gazdasagtudomanyi Egyetem, Department of Inorganic and Analytical Chemistry, Budapest, HUNGARY
| | - Milan Erben
- University of Pardubice: Univerzita Pardubice, Department of General and Inorganic Chemistry, CZECH REPUBLIC
| | - Martin Hejda
- University of Pardubice, Department of General and Inorganic Chemistry, CZECH REPUBLIC
| | - Roman Jambor
- University of Pardubice: Univerzita Pardubice, Department of General and Inorganic Chemistry, CZECH REPUBLIC
| | - Ales Ruzicka
- University of Pardubice: Univerzita Pardubice, Department of General and Inorganic Chemistry, CZECH REPUBLIC
| | - Zoltan Benko
- Budapest University of Technology and Economics: Budapesti Muszaki es Gazdasagtudomanyi Egyetem, Department of Inorganic and Analytical Chemistry, HUNGARY
| | - Libor Dostál
- Faculty of Chemical Technology, University of Pardubice, Department of General and Inorganic Chemistry, Studentska 573, 532 10, Pardubice, CZECH REPUBLIC
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48
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Zhang K, Dou X, Hou H, Zhou Z, Lopez-Haro M, Meira DM, Liu P, He P, Liu L. Generation of Subnanometer Metal Clusters in Silicoaluminate Zeolites as Bifunctional Catalysts. JACS Au 2023; 3:3213-3226. [PMID: 38034962 PMCID: PMC10685439 DOI: 10.1021/jacsau.3c00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 12/02/2023]
Abstract
Zeolite-encapsulated subnanometer metal catalysts are an emerging class of solid catalysts with superior performances in comparison to metal catalysts supported on open-structure solid carriers. Currently, there is no general synthesis methodology for the encapsulation of subnanometer metal catalysts in different zeolite structures. In this work, we will show a general synthesis method for the encapsulation of subnanometer metal clusters (Pt, Pd, and Rh) within various silicoaluminate zeolites with different topologies (MFI, CHA, TON, MOR). The successful generation of subnanometer metal species in silicoaluminate zeolites relies on the introduction of Sn, which can suppress the migration of subnanometer metal species during high-temperature oxidation-reduction treatments according to advanced electron microscopy and spectroscopy characterizations. The advantage of encapsulated subnanometer Pt catalysts in silicoaluminate zeolites is reflected in the direct coupling of ethane and benzene for production of ethylbenzene, in which the Pt and the acid sites work in a synergistic way.
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Affiliation(s)
- Kun Zhang
- State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaomeng Dou
- Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Huaming Hou
- National
Energy Center for Coal to Clean Fuels, Synfuels
China Technology Co., Ltd., Beijing 101407, China
| | - Ziyu Zhou
- State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Miguel Lopez-Haro
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz 11519, Spain
| | - Debora M. Meira
- CLS@APS
sector
20, Advanced Photon Source, Argonne National
Laboratory, 9700 S. Cass
Avenue, Argonne, Illinois 60439, United States
- Canadian
Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Ping Liu
- State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Peng He
- State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National
Energy Center for Coal to Clean Fuels, Synfuels
China Technology Co., Ltd., Beijing 101407, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Lichen Liu
- Department
of Chemistry, Tsinghua University, Beijing 100084, China
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49
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Böttger F, Radonic T, Bahce I, Monkhorst K, Piersma SR, Pham TV, Dingemans AMC, Hillen LM, Santarpia M, Giovannetti E, Smit EF, Burgers SA, Jimenez CR. Identification of protein biomarkers for prediction of response to platinum-based treatment regimens in patients with non-small cell lung cancer. Mol Oncol 2023. [PMID: 38010703 DOI: 10.1002/1878-0261.13555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/06/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023] Open
Abstract
The majority of patients with resected stage II-IIIA non-small cell lung cancer (NSCLC) are treated with platinum-based adjuvant chemotherapy (ACT) in a one-size-fits-all approach. However, a significant number of patients do not derive clinical benefit, and no predictive patient selection biomarker is currently available. Using mass spectrometry-based proteomics, we have profiled tumour resection material of 2 independent, multi-centre cohorts of in total 67 patients with NSCLC who underwent ACT. Unsupervised cluster analysis of both cohorts revealed a poor response/survival sub-cluster composed of ~ 25% of the patients, that displayed a strong epithelial-mesenchymal transition signature and stromal phenotype. Beyond this stromal sub-population, we identified and validated platinum response prediction biomarker candidates involved in pathways relevant to the mechanism of action of platinum drugs, such as DNA damage repair, as well as less anticipated processes such as those related to the regulation of actin cytoskeleton. Integration with pre-clinical proteomics data supported a role for several of these candidate proteins in platinum response prediction. Validation of one of the candidates (HMGB1) in a third independent patient cohort using immunohistochemistry highlights the potential of translating these proteomics results to clinical practice.
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Affiliation(s)
- Franziska Böttger
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
- OncoProteomics Laboratory, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
| | - Teodora Radonic
- Department of Pathology, Amsterdam UMC - location VUmc, The Netherlands
| | - Idris Bahce
- Department of Pulmonary Diseases, Amsterdam UMC - location VUmc, The Netherlands
| | - Kim Monkhorst
- Division of Pathology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Sander R Piersma
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
- OncoProteomics Laboratory, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
| | - Thang V Pham
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
- OncoProteomics Laboratory, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
| | - Anne-Marie C Dingemans
- Department of Pulmonary Diseases, GROW School for Oncology & Developmental Biology, Maastricht University Medical Center, The Netherlands
- Department of Pulmonary Diseases, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - Lisa M Hillen
- Department of Pathology, Maastricht University Medical Center, The Netherlands
| | - Mariacarmela Santarpia
- Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, Italy
| | - Elisa Giovannetti
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
- Cancer Pharmacology Lab, Fondazione Pisana per la Scienza, Pisa, Italy
| | - Egbert F Smit
- Division of Thoracic Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Department of Pulmonary Diseases, Leiden University Medical Center, The Netherlands
| | - Sjaak A Burgers
- Division of Thoracic Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Connie R Jimenez
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
- OncoProteomics Laboratory, Cancer Center Amsterdam, Amsterdam UMC - location VUmc, The Netherlands
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50
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Altenburger B, Andersson C, Levin S, Westerlund F, Fritzsche J, Langhammer C. Label-Free Imaging of Catalytic H 2O 2 Decomposition on Single Colloidal Pt Nanoparticles Using Nanofluidic Scattering Microscopy. ACS Nano 2023; 17:21030-21043. [PMID: 37847543 PMCID: PMC10655234 DOI: 10.1021/acsnano.3c03977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 10/09/2023] [Indexed: 10/18/2023]
Abstract
Single-particle catalysis aims at determining factors that dictate the nanoparticle activity and selectivity. Existing methods often use fluorescent model reactions at low reactant concentrations, operate at low pressures, or rely on plasmonic enhancement effects. Hence, methods to measure single-nanoparticle activity under technically relevant conditions and without fluorescence or other enhancement mechanisms are still lacking. Here, we introduce nanofluidic scattering microscopy of catalytic reactions on single colloidal nanoparticles trapped inside nanofluidic channels to fill this gap. By detecting minuscule refractive index changes in a liquid flushed trough a nanochannel, we demonstrate that local H2O2 concentration changes in water can be accurately measured. Applying this principle, we analyze the H2O2 concentration profiles adjacent to single colloidal Pt nanoparticles during catalytic H2O2 decomposition into O2 and H2O and derive the particles' individual turnover frequencies from the growth rate of the O2 gas bubbles formed in their respective nanochannel during reaction.
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Affiliation(s)
- Björn Altenburger
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Carl Andersson
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Sune Levin
- Department
of Life Sciences, Chalmers University of
Technology, SE-412 96 Gothenburg, Sweden
| | - Fredrik Westerlund
- Department
of Life Sciences, Chalmers University of
Technology, SE-412 96 Gothenburg, Sweden
| | - Joachim Fritzsche
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Christoph Langhammer
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
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