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Laglera-Gándara C, Jiménez-Pérez J, Fernández-de-Córdova FJ, Ríos P, Conejero S. Electrophilic Hydrosilylation of Electron-Rich Alkenes Derived from Enamines. Angew Chem Int Ed Engl 2024:e202404859. [PMID: 38634763 DOI: 10.1002/anie.202404859] [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: 03/11/2024] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 04/19/2024]
Abstract
The low-electron count, air-stable, platinum complexes [Pt(ItBu')(ItBu)][BArF] (C1) (ItBu=1,3-di-tert-butylimidazol-2-ylidene), [Pt(SiPh)3(ItBuiPr)2][BArF] (C2) (ItBuiPr = 1-tert-butyl-3-iso-propylimidazol-2-ylidene), [Pt(SiPh)3(ItBuMe)2][BArF] (C3), [Pt(GePh3)(ItBuiPr)2][BArF] (C4), [Pt(GePh)3(ItBuMe)2][BArF] (C5) and [Pt(GeEt)3(ItBuMe)2][BArF] (C6) (ItBuMe = 1-tert-butyl-3-methylimidazol-2-ylidene) are efficient catalysts (particularly the germyl derivatives) in both the silylative dehydrocoupling and hydrosilylation of electron rich alkenes derived from enamines. The steric hindrance exerted by the NHC ligand plays an important role in the selectivity of the reaction. Thus, bulky ligands are selective towards the silylative dehydrocoupling process whereas less sterically hindered promote the selective hydrosilylation reaction. The latter is, in addition, regioselective towards the β-carbon atom of both internal and terminal enamines, leading to β-aminosilanes. Moreover, the syn stereochemistry of the amino and silyl groups implies an anti Si‒H bond addition across the double bond. All these facts point to a mechanistic picture that, according to experimental and computational studies, involves a non-classical hydrosilylation process through an outer-sphere mechanism in which a formal nucleophilic addition of the enamine to the silicon atom of a platinum σ-SiH complex is the key step. This is in sharp contrast with the classical Chalk-Harrod mechanism prevalent in platinum chemistry.
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Affiliation(s)
- Carlos Laglera-Gándara
- Consejo Superior de Investigaciones Científicas, Instituto de Investigaciones Químicas, C/ Américo Vespucio 49, 41092, Sevilla, SPAIN
| | - Julián Jiménez-Pérez
- Consejo Superior de Investigaciones Científicas, Instituto de Investigaciones Químicas, C/ Américo Vespucio 49, 41092, Sevilla, SPAIN
| | | | - Pablo Ríos
- Universidad de Sevilla, Departamento de Química Inorgánica, SPAIN
| | - Salvador Conejero
- Consejo Superior de Investigaciones Cientificas, Instituto de Investigaciones Químicas, Avenida Americo Vespucio 49, 41092, Seville, SPAIN
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Chen M, Yang Y, Chen Q, Tang L, Liu J, Sun Y, Liu Q, Zhang Y, Zhang GJ, Chen S. Pt,P-codoped carbon nitride nanoenzymes for fluorescence and colorimetric dual-mode detection of cholesterol. Anal Chim Acta 2024; 1297:342351. [PMID: 38438235 DOI: 10.1016/j.aca.2024.342351] [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: 12/05/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 03/06/2024]
Abstract
Cholesterol is an important lipid compound found in a variety of foods, and its level in human blood is closely related to human health. Therefore, development of rapid and accurate POCT (point-of-care testing) methods for cholesterol detection is crucial for assessing food quality and early diagnosis of diseases, in particular, in a resource-limited environment. In this study, a smartphone-assisted colorimetric biosensor is constructed based on platinum,phosphorus-codoped carbon nitride (PtCNP2) for the rapid detection of cholesterol. Phosphorus-doped carbon nitride is prepared by thermal annealing of urea and NH4PF6, into which platinum is atomically dispersed by thermal refluxing. The obtained PtCNP2 exhibits an excellent peroxidase-like activity under physiological pH, whereby colorless o-phenylenediamine (OPD) is oxidized to colored 2,3-diaminophenazine (DAP) in the presence of hydrogen peroxide (H2O2), which can be produced during the oxidation of cholesterol by cholesterol oxidase. A smartphone-assisted visual sensing system is then constructed based on the color recognition software, and rapid on-site detection of cholesterol is achieved by reading the RGB values. Meanwhile, the generated DAP shows an apparent fluorescence signal and can realize highly sensitive detection of cholesterol by the change of the fluorescence signal intensity. Such a cholesterol sensor exhibits a wide linear detection range of 0.5-600 μg mL-1 and a low detection limit of 59 ng mL-1. The practicality of the sensor is successfully demonstrated in the rapid detection of cholesterol in serum and food.
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Affiliation(s)
- Meiling Chen
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Yang Yang
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen, 518101, China
| | - Qinhua Chen
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen, 518101, China
| | - Lina Tang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Junlin Liu
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Yujie Sun
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Qiming Liu
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95060, USA
| | - Yulin Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China; Hubei Shizhen Laboratory, Wuhan, Hubei 430065, China.
| | - Guo-Jun Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China; Hubei Shizhen Laboratory, Wuhan, Hubei 430065, China.
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95060, USA.
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Yamaguchi A, Kawaguchi K, Kawanishi K, Maeshima Y, Nakakura A, Kataoka TR, Takahara S, Nakagawa S, Yonezawa A, Takada M, Kawashima M, Kawaguchi-Sakita N, Kotake T, Suzuki E, Shimizu H, Torii M, Morita S, Ishiguro H, Toi M. Comparison of cisplatin-based versus standard preoperative chemotherapy in patients with operable triple-negative breast cancer: propensity score matching and inverse probability of treatment weighting analysis. Breast Cancer Res Treat 2024; 204:261-275. [PMID: 38123790 PMCID: PMC10948496 DOI: 10.1007/s10549-023-07163-z] [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: 06/17/2023] [Accepted: 10/12/2023] [Indexed: 12/23/2023]
Abstract
PURPOSE The efficacy of carboplatin is non-equivalent to that of cisplatin (CDDP) for various tumor types in curative settings. However, the role of CDDP in operable triple-negative breast cancer (TNBC) patients remains unknown. We conducted a multicenter observational study to examine the effects of CDDP added to preoperative chemotherapy in patients with TNBC. METHODS This retrospective study consecutively included previously untreated patients with stage I-III TNBC treated with preoperative chemotherapy with or without CDDP. The primary endpoint was distant disease-free survival (DDFS). Propensity score matching (PSM) and inverse probability of treatment weighting (IPTW) were used to minimize confounding biases in comparisons between the two groups. RESULTS A total of 138 patients were enrolled in the study. Of these, 52 were in the CDDP group and 86 in the non-CDDP group. DDFS was significantly better in the CDDP group than in the non-CDDP group (unadjusted hazard ratio (HR) 0.127 and p < 0.001, PSM HR 0.141 and p < 0.003, IPTW HR 0.123 and p = < 0.001). Furthermore, among the patients with residual cancer burden (RCB) class II/III, DDFS was better in the CDDP group than in the non-CDDP group (unadjusted HR 0.192 and p = 0.013, PSM HR 0.237 and p = 0.051, IPTW HR 0.124 and p = 0.059). CONCLUSION Our study showed that CDDP-containing regimens achieved favorable prognoses in patients with operable TNBC, especially for the RCB class II/III population. Confirmative studies are warranted to elucidate the role of CDDP in TNBC treatment.
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Affiliation(s)
- Ayane Yamaguchi
- Department of Breast Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Kosuke Kawaguchi
- Department of Breast Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan.
| | - Kana Kawanishi
- Department of Breast Surgery, Kobe City Nishi-Kobe Medical Center, 5-7-1, Kojidai, Nishi-Ku, Kobe, 651-2273, Japan
| | - Yurina Maeshima
- Department of Breast Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Akiyoshi Nakakura
- Department of Biomedical Statistics and Bioinformatics, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Tatsuki R Kataoka
- Department of Molecular Diagnostic Pathology, Iwate Medical University, 1-1-1 Idaidori, Yahaba-Cho, Shiwa-Gun, Iwate, 028-3694, Japan
| | - Sachiko Takahara
- Department of Breast Surgery, Tazuke Kofukai, Medical Research Institute, Kitano Hospital, 2-4-20 Ohgimachi, Kita-Ku, Osaka, 530-8480, Japan
| | - Shunsaku Nakagawa
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Atsushi Yonezawa
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Masahiro Takada
- Department of Breast Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Masahiro Kawashima
- Department of Breast Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Nobuko Kawaguchi-Sakita
- Department of Therapeutic Oncology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Takeshi Kotake
- Department of Therapeutic Oncology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Eiji Suzuki
- Department of Breast Surgery, Kobe City Medical Center General Hospital, 2-1-1 Minatojimaminami-Cho, Chuo-Ku, Kobe, 650-0047, Japan
| | - Hanako Shimizu
- Department of Breast Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Masae Torii
- Department of Breast Surgery, Japanese Red Cross Wakayama Medical Center, 4-20 Komatsubara-Dori, Wakayama City, 640-8558, Japan
| | - Satoshi Morita
- Department of Breast Surgery, Kobe City Nishi-Kobe Medical Center, 5-7-1, Kojidai, Nishi-Ku, Kobe, 651-2273, Japan
| | - Hiroshi Ishiguro
- Breast Oncology Service, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
| | - Masakazu Toi
- Tokyo Metropolitan Cancer and Infectious Disease Center, Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-Ku, Tokyo, 113-8677, Japan
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Hourtané O, Gonzalez P, Feurtet-Mazel A, Kochoni E, Fortin C. Potential cellular targets of platinum in the freshwater microalgae Chlamydomonas reinhardtii and Nitzschia palea revealed by transcriptomics. Ecotoxicology 2024; 33:281-295. [PMID: 38478139 DOI: 10.1007/s10646-024-02746-y] [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] [Subscribe] [Scholar Register] [Accepted: 02/27/2024] [Indexed: 04/13/2024]
Abstract
Platinum group element levels have increased in natural aquatic environments in the last few decades, in particular as a consequence of the use of automobile catalytic converters on a global scale. Concentrations of Pt over tens of μg L-1 have been observed in rivers and effluents. This raises questions regarding its possible impacts on aquatic ecosystems, as Pt natural background concentrations are extremely low to undetectable. Primary producers, such as microalgae, are of great ecological importance, as they are at the base of the food web. The purpose of this work was to better understand the impact of Pt on a cellular level for freshwater unicellular algae. Two species with different characteristics, a green alga C. reinhardtii and a diatom N. palea, were studied. The bioaccumulation of Pt as well as its effect on growth were quantified. Moreover, the induction or repression factors of 16 specific genes were determined and allowed for the determination of possible intracellular effects and pathways of Pt. Both species seemed to be experiencing copper deficiency as suggested by inductions of genes linked to copper transporters. This is an indication that Pt might be internalized through the Cu(I) metabolic pathway. Moreover, Pt could possibly be excreted using an efflux pump. Other highlights include a concentration-dependent negative impact of Pt on mitochondrial metabolism for C. reinhardtii which is not observed for N. palea. These findings allowed for a better understanding of some of the possible impacts of Pt on freshwater primary producers, and also lay the foundations for the investigation of pathways for Pt entry at the base of the aquatic food web.
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Affiliation(s)
- O Hourtané
- EcotoQ, INRS-Eau Terre Environnement, 490 de la Couronne, Québec, QC, G1K 9A9, Canada.
- Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600, Pessac, France.
| | - P Gonzalez
- Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600, Pessac, France
| | - A Feurtet-Mazel
- Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600, Pessac, France
| | - E Kochoni
- EcotoQ, INRS-Eau Terre Environnement, 490 de la Couronne, Québec, QC, G1K 9A9, Canada
| | - C Fortin
- EcotoQ, INRS-Eau Terre Environnement, 490 de la Couronne, Québec, QC, G1K 9A9, Canada
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5
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Fan R, Lin R, Zhang S, Deng A, Hai Y, Zhuang J, Liu Y, Cheng M, Wei G. Novel Pt(IV) complex OAP2 induces STING activation and pyroptosis via mitochondrial membrane remodeling for synergistic chemo-immunotherapy. Acta Pharm Sin B 2024; 14:1742-1758. [PMID: 38572099 PMCID: PMC10985026 DOI: 10.1016/j.apsb.2023.11.032] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/07/2023] [Accepted: 11/27/2023] [Indexed: 04/05/2024] Open
Abstract
Mitochondrial membrane remodeling can trigger the release of mitochondrial DNA (mtDNA), leading to the activation of cellular oxidative stress and immune responses. While the role of mitochondrial membrane remodeling in promoting inflammation in hepatocytes is well-established, its effects on tumors have remained unclear. In this study, we designed a novel Pt(IV) complex, OAP2, which is composed of oxaliplatin (Oxa) and acetaminophen (APAP), to enhance its anti-tumor effects and amplify the immune response. Our findings demonstrate that OAP2 induces nuclear DNA damage, resulting in the production of nuclear DNA. Additionally, OAP2 downregulates the expression of mitochondrial Sam50, to promote mitochondrial membrane remodeling and trigger mtDNA secretion, leading to double-stranded DNA accumulation and ultimately synergistically activating the intracellular cGAS-STING pathway. The mitochondrial membrane remodeling induced by OAP2 overcomes the limitations of Oxa in activating the STING pathway and simultaneously promotes gasdermin-D-mediated cell pyroptosis. OAP2 also promotes dendritic cell maturation and enhances the quantity and efficacy of cytotoxic T cells, thereby inhibiting cancer cell proliferation and metastasis. Briefly, our study introduces the first novel small-molecule inhibitor that regulates mitochondrial membrane remodeling for active immunotherapy in anti-tumor research, which may provide a creative idea for targeting organelle in anti-tumor therapy.
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Affiliation(s)
- Renming Fan
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Ruizhuo Lin
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Shuo Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Aohua Deng
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Yongrui Hai
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Junyan Zhuang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Yang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Gaofei Wei
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
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Baglini E, Chiaverini L, Tolbatov I, Taliani S, Da Settimo F, La Mendola D, Barresi E, Marzo T. Tyrosine kinase inhibitors (TKIs) for ovarian cancer treatment: from organic to inorganic chemotherapeutics towards selectivity-a perspective overview. Biometals 2024; 37:275-288. [PMID: 37930483 PMCID: PMC11006779 DOI: 10.1007/s10534-023-00547-0] [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: 06/14/2023] [Accepted: 10/01/2023] [Indexed: 11/07/2023]
Abstract
Ovarian cancer (OC) is a lethal gynecologic cancer in industrialized countries. Treatments for OC include the surgical removal and chemotherapy. In the last decades, improvements have been made in the surgery technologies, drug combinations and administration protocols, and in diagnosis. However, mortality from OC is still high owing to recurrences and insurgence of drug resistance. Accordingly, it is urgent the development of novel agents capable to effectively target OC. In this respect, tyrosine kinase inhibitors (TKIs) may play an important role. Most of TKIs developed and tested so far are organic. However, owing to their chemical versatility, also metals can be exploited to design selective and potent TKIs. We provide a short and easy-to-read overview on the main organic TKIs with a summary of those that entered clinical trials. Additionally, we describe the potential of metal-based TKIs, focusing on this overlooked family of compounds that may significantly contribute towards the concept of precision-medicine.
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Affiliation(s)
- Emma Baglini
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy
| | - Lorenzo Chiaverini
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy
| | - Iogann Tolbatov
- Department of Physics and Astronomy, University of Padova, via F. Marzolo 8, 35131, Padua, Italy
| | - Sabrina Taliani
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy
| | - Federico Da Settimo
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy
| | - Diego La Mendola
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy
| | - Elisabetta Barresi
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy.
| | - Tiziano Marzo
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy.
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Wang Z, Li G, Zhao Q, Fu G, Yang Z, Zhang G. Reductive prodrug and AIE copolymer nanoparticle for monitoring and chemotherapy. BMC Cancer 2024; 24:382. [PMID: 38532345 DOI: 10.1186/s12885-024-12135-7] [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: 12/01/2023] [Accepted: 03/17/2024] [Indexed: 03/28/2024] Open
Abstract
Polymeric micelle systems for drug delivery, monitor and chemotherapy have gained significant attention, and reductive polymeric micelle systems have become particularly attractive due to their controlled release behavior without additional assistance. However, there are challenges in accurately controlling drug and probe release from the nanoparticles and determining the loading content of drug and probe. To address these issues, we have developed a reduction-responsive Pt(IV) prodrug-based polymeric delivery system that can be dynamically monitored using aggregation-induced emission luminogens (AIE) based bioprobes. These polymeric micelle can self-assemble into nanoparticles and release both bio-active Pt(II) drug and bio-probe upon reduction activation. TPE molecules released in the inner endo/lysosomal microenvironment aggregate and fluoresce upon irradiation, thus allowing real-time tracking of drug biodistribution without additional contrast agents. Advantages of this system include position-specific chemical bond cleavage, control of platinum content, and monitoring of drug reduction and biodistribution.
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Affiliation(s)
- Zigui Wang
- Department of Clinical Diagnosis, Laboratory of Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- NMPA Key Laboratory for Quality Control of In Vitro Diagnostics, Beijing, China
- Beijing Engineering Research Center of Immunological Reagents Clinical Research, Beijing, China
- Zhengzhou Immunobiotech Co, Ltd, Zhengzhou, 450016, P.R. China
| | - Guilin Li
- Zhengzhou Immunobiotech Co, Ltd, Zhengzhou, 450016, P.R. China
| | - Qiaohui Zhao
- Zhengzhou Immunobiotech Co, Ltd, Zhengzhou, 450016, P.R. China
| | - Guangyu Fu
- Autobio Diagnostics Co, LtdHenan, 450016, China
| | - Zengli Yang
- Autobio Diagnostics Co, LtdHenan, 450016, China
| | - Guojun Zhang
- Department of Clinical Diagnosis, Laboratory of Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
- NMPA Key Laboratory for Quality Control of In Vitro Diagnostics, Beijing, China.
- Beijing Engineering Research Center of Immunological Reagents Clinical Research, Beijing, China.
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8
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Oliveira LS, Rosa LB, Affonso DD, Santos IA, Da Silva JC, Rodrigues GC, Harris M, Jardim ACG, Nakahata DH, Sabino JR, de Carvalho JE, Miguel DC, Ruiz ALTG, Abbehausen C. Novel Bidentate Amine Ligand and the Interplay between Pd(II) and Pt(II) Coordination and Biological Activity. Chembiochem 2024; 25:e202300696. [PMID: 38146865 DOI: 10.1002/cbic.202300696] [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: 10/11/2023] [Revised: 12/21/2023] [Accepted: 12/24/2023] [Indexed: 12/27/2023]
Abstract
Pt(II) and Pd(II) coordinating N-donor ligands have been extensively studied as anticancer agents after the success of cisplatin. In this work, a novel bidentate N-donor ligand, the N-[[4-(phenylmethoxy)phenyl]methyl]-2-pyridinemethanamine, was designed to explore the antiparasitic, antiviral and antitumor activity of its Pt(II) and Pd(II) complexes. Chemical and spectroscopic characterization confirm the formation of [MLCl2 ] complexes, where M=Pt(II) and Pd(II). Single crystal X-ray diffraction confirmed a square-planar geometry for the Pd(II) complex. Spectroscopic characterization of the Pt(II) complex suggests a similar structure. 1 H NMR, 195 Pt NMR and HR-ESI-MS(+) analysis of DMSO solution of complexes indicated that both compounds exchange the chloride trans to the pyridine for a solvent molecule with different reaction rates. The ligand and the two complexes were tested for in vitro antitumoral, antileishmanial, and antiviral activity. The Pt(II) complex resulted in a GI50 of 10.5 μM against the NCI/ADR-RES (multidrug-resistant ovarian carcinoma) cell line. The ligand and the Pd(II) complex showed good anti-SARS-CoV-2 activity with around 65 % reduction in viral replication at a concentration of 50 μM.
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Affiliation(s)
- Laiane S Oliveira
- Institute of Chemistry, University of Campinas, Cidade Universitária Zeferino Vaz - Barão Geraldo, Campinas, São Paulo, Brazil
| | - Letícia B Rosa
- Institute of Biology, University of Campinas, Cidade Universitária Zeferino Vaz -, Barão Geraldo, Campinas, São Paulo, Brazil
| | - Daniele D Affonso
- Faculty of Pharmaceutical Sciences, University of Campinas, Cidade Universitária Zeferino Vaz -, Barão Geraldo, Campinas, São Paulo, Brazil
| | - Igor A Santos
- Institute of Biomedical Sciences, Federal University of Uberlândia, João Naves de Ávila Avenue, 2121 -, Santa Mônica, Uberlândia, Minas Gerais, Brazil
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Woodhouse, Leeds, LS2 9JT, UK
| | - Jennyfer C Da Silva
- Institute of Chemistry, University of Campinas, Cidade Universitária Zeferino Vaz - Barão Geraldo, Campinas, São Paulo, Brazil
| | - Gustavo C Rodrigues
- Institute of Chemistry, University of Campinas, Cidade Universitária Zeferino Vaz - Barão Geraldo, Campinas, São Paulo, Brazil
| | - Mark Harris
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Woodhouse, Leeds, LS2 9JT, UK
| | - Ana Carolina G Jardim
- Institute of Biomedical Sciences, Federal University of Uberlândia, João Naves de Ávila Avenue, 2121 -, Santa Mônica, Uberlândia, Minas Gerais, Brazil
- Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Cristóvão Colombo street, 2265 -, Jardim Nazareth. São José do Rio Preto, São Paulo, Brazil
| | - Douglas H Nakahata
- Institute of Chemistry, Federal University of Goiás, Esperança Avenue, Campus Samambaia., Goiânia, Goiás, Brazil
| | - José R Sabino
- Institute of Physics, Federal University of Goiás, Esperança Avenue, Campus Samambaia., Goiânia, Goiás, Brazil
| | - João E de Carvalho
- Faculty of Pharmaceutical Sciences, University of Campinas, Cidade Universitária Zeferino Vaz -, Barão Geraldo, Campinas, São Paulo, Brazil
| | - Danilo C Miguel
- Institute of Biology, University of Campinas, Cidade Universitária Zeferino Vaz -, Barão Geraldo, Campinas, São Paulo, Brazil
| | - Ana Lucia T G Ruiz
- Faculty of Pharmaceutical Sciences, University of Campinas, Cidade Universitária Zeferino Vaz -, Barão Geraldo, Campinas, São Paulo, Brazil
| | - Camilla Abbehausen
- Institute of Chemistry, University of Campinas, Cidade Universitária Zeferino Vaz - Barão Geraldo, Campinas, São Paulo, Brazil
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Mason SR, Willson ML, Egger SJ, Beith J, Dear RF, Goodwin A. Platinum chemotherapy for early triple-negative breast cancer. Breast 2024; 75:103712. [PMID: 38492276 PMCID: PMC10959715 DOI: 10.1016/j.breast.2024.103712] [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: 01/23/2024] [Accepted: 03/07/2024] [Indexed: 03/18/2024] Open
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer associated with shorter survival and a higher likelihood of recurrence. In early TNBC, platinum chemotherapy has been shown to improve pathological complete response (pCR); however, its effect on long-term survival outcomes has not been fully elucidated. METHODS Randomised controlled trials examining neoadjuvant or adjuvant platinum chemotherapy for early TNBC were included. Primary outcomes were disease-free survival (DFS) and overall survival (OS). Secondary outcomes were pCR, treatment adherence, grade III or IV toxicity related to chemotherapy, and quality of life. RESULTS From 3972 records, we included 20 published studies. All studies reporting DFS and OS used carboplatin. Inclusion of platinum chemotherapy improved DFS (neoadjuvant: hazard ratio (HR) 0.63, 95% confidence interval (CI) 0.53 to 0.75; adjuvant: HR 0.69, 95% CI 0.54 to 0.88) and OS (neoadjuvant: HR 0.69, 95% CI 0.55 to 0.86; adjuvant: 0.70, 95% CI 0.50 to 0.96). Our analysis confirmed platinum chemotherapy increased pCR rates (risk ratio (RR) 1.44, 95% CI 1.31 to 1.59). There were no differences seen in examined subgroups. Platinum chemotherapy was associated with reduced dose intensity and increased haematological toxicity. CONCLUSIONS Platinum-based chemotherapy using carboplatin in the adjuvant or neoadjuvant setting improves long-term outcomes of DFS and OS in early TNBC, with no evidence of differences by subgroup. This was at the cost of more frequent chemotherapy delays and dose reductions, and greater haematological toxicity. These findings support the use of platinum-based chemotherapy for people with early TNBC.
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Affiliation(s)
- Sofia Re Mason
- Garvan Institute of Medical Research, Darlinghurst, Australia; St Vincent's Clinical School, UNSW, Sydney, Australia; Chris O'Brien Lifehouse, Camperdown, Australia; Concord Cancer Centre, Concord Repatriation General Hospital, Concord, Australia.
| | - Melina L Willson
- Evidence Integration, NHMRC Clinical Trials Centre, The University of Sydney, Sydney, Australia
| | - Sam J Egger
- Cancer Research Division, Cancer Council NSW, Sydney, Australia; The Daffodil Centre, The University of Sydney, Sydney, Australia
| | - Jane Beith
- Chris O'Brien Lifehouse, Camperdown, Australia
| | - Rachel F Dear
- Sydney Medical School, The University of Sydney, Sydney, Australia; The Kinghorn Cancer Centre, Darlinghurst, Australia
| | - Annabel Goodwin
- Chris O'Brien Lifehouse, Camperdown, Australia; Concord Cancer Centre, Concord Repatriation General Hospital, Concord, Australia; Sydney Medical School, The University of Sydney, Sydney, Australia
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10
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Cheng SM, Su YY, Chiang NJ, Wang CJ, Chao YJ, Huang CJ, Tsai HJ, Chen SH, Chang CY, Tsai CR, Li YJ, Yen CJ, Chuang SC, Chang JSM, Shan YS, Hwang DY, Chen LT. Germline mutations of homologous recombination genes and clinical outcomes in pancreatic cancer: a multicenter study in Taiwan. J Biomed Sci 2024; 31:21. [PMID: 38350919 PMCID: PMC10865564 DOI: 10.1186/s12929-024-01008-7] [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: 07/13/2023] [Accepted: 01/28/2024] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND Cancer susceptibility germline mutations are associated with pancreatic ductal adenocarcinoma (PDAC). However, the hereditary status of PDAC and its impact on survival is largely unknown in the Asian population. METHODS Exome sequencing was performed on 527 blood samples from PDAC individuals and analyzed for mutations in 80 oncogenic genes. Pathogenic and likely pathogenic (P/LP) germline variants were diagnosed according to the ACMG variant classification categories. The association between germline homologous recombination gene mutations (gHRmut, including BAP1, BRCA1, BRCA2, PALB2, ATM, BLM, BRIP1, CHEK2, NBN, MUTYH, FANCA and FANCC) and the treatment outcomes was explored in patients with stage III/IV diseases treated with first-line (1L) platinum-based versus platinum-free chemotherapy. RESULTS Overall, 104 of 527 (19.7%) patients carried germline P/LP variants. The most common mutated genes were BRCA2 (3.60%), followed by ATR (2.66%) and ATM (1.9%). After a median follow-up duration of 38.3-months (95% confidence interval, 95% CI 35.0-43.7), the median overall survival (OS) was not significantly different among patients with gHRmut, non-HR germline mutations, or no mutation (P = 0.43). Among the 320 patients with stage III/IV disease who received 1L combination chemotherapy, 32 (10%) had gHRmut. Of them, patients receiving 1L platinum-based chemotherapy exhibited a significantly longer median OS compared to those with platinum-free chemotherapy, 26.1 months (95% CI 12.7-33.7) versus 9.6 months (95% CI 5.9-17.6), P = 0.001. However, the median OS of patients without gHRmut was 14.5 months (95% CI 13.2-16.9) and 12.6 months (95% CI 10.8-14.7) for patients receiving 1L platinum-based and platinum-free chemotherapy, respectively (P = 0.22). These results were consistent after adjusting for potential confounding factors including age, tumor stage, performance status, and baseline CA 19.9 in the multivariate Cox regression analysis. CONCLUSIONS Our study showed that nearly 20% of Taiwanese PDAC patients carried germline P/LP variants. The longer survival observed in gHRmut patients treated with 1L platinum-based chemotherapy highlights the importance of germline testing for all patients with advanced PDAC at diagnosis.
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Affiliation(s)
- Siao Muk Cheng
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
| | - Yung-Yeh Su
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Deparment of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Internal Medicine, Kaohsiung Medical University Hospital and Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Nai-Jung Chiang
- Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chih-Jung Wang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Surgery, National Cheng-Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ying-Jui Chao
- Department of Surgery, National Cheng-Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chien-Jui Huang
- Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hui-Jen Tsai
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
- Deparment of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Internal Medicine, Kaohsiung Medical University Hospital and Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shang-Hung Chen
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
- Deparment of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chi-Yen Chang
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
| | - Chia-Rung Tsai
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
| | - Yi-Jie Li
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
| | - Chia-Jui Yen
- Deparment of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Chang Chuang
- Division of General and Digestive Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Surgery, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jeffrey Shu-Ming Chang
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
| | - Yan-Shen Shan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
- Department of Surgery, National Cheng-Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| | - Daw-Yang Hwang
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan.
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Center for Biomarkers and Biotech Drugs, Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Precision Medicine Ph.D. Program, National Tsing Hua University, Hsinchu, Taiwan.
| | - Li-Tzong Chen
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan.
- Deparment of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
- Department of Internal Medicine, Kaohsiung Medical University Hospital and Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Gao X, Dai S, Teng Y, Wang Q, Zhang Z, Yang Z, Park M, Wang H, Jia Z, Wang Y, Yang Y. Ultra-Efficient and Cost-Effective Platinum Nanomembrane Electrocatalyst for Sustainable Hydrogen Production. Nanomicro Lett 2024; 16:108. [PMID: 38315294 PMCID: PMC10844191 DOI: 10.1007/s40820-024-01324-5] [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: 09/05/2023] [Accepted: 12/11/2023] [Indexed: 02/07/2024]
Abstract
Hydrogen production through hydrogen evolution reaction (HER) offers a promising solution to combat climate change by replacing fossil fuels with clean energy sources. However, the widespread adoption of efficient electrocatalysts, such as platinum (Pt), has been hindered by their high cost. In this study, we developed an easy-to-implement method to create ultrathin Pt nanomembranes, which catalyze HER at a cost significantly lower than commercial Pt/C and comparable to non-noble metal electrocatalysts. These Pt nanomembranes consist of highly distorted Pt nanocrystals and exhibit a heterogeneous elastic strain field, a characteristic rarely seen in conventional crystals. This unique feature results in significantly higher electrocatalytic efficiency than various forms of Pt electrocatalysts, including Pt/C, Pt foils, and numerous Pt single-atom or single-cluster catalysts. Our research offers a promising approach to develop highly efficient and cost-effective low-dimensional electrocatalysts for sustainable hydrogen production, potentially addressing the challenges posed by the climate crisis.
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Affiliation(s)
- Xiang Gao
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China
| | - Shicheng Dai
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, People's Republic of China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yun Teng
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China
| | - Qing Wang
- Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai, People's Republic of China
| | - Zhibo Zhang
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China
| | - Ziyin Yang
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China
| | - Minhyuk Park
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China
| | - Hang Wang
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China
| | - Zhe Jia
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, People's Republic of China
| | - Yunjiang Wang
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, People's Republic of China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yong Yang
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China.
- Department of Materials Science and Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, People's Republic of China.
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12
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Ning X, Zhan L, Zhou X, Luo J, Wang Y. In-situ Bi-modified Pt towards glycerol and formic acid electro-oxidation: Effects of catalyst structure and surface microenvironment on activity and selectivity. J Colloid Interface Sci 2024; 655:920-930. [PMID: 37979297 DOI: 10.1016/j.jcis.2023.11.075] [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: 06/19/2023] [Revised: 11/06/2023] [Accepted: 11/11/2023] [Indexed: 11/20/2023]
Abstract
The performances of glycerol electro-oxidation reaction (GOR) and formic acid electro-oxidation reaction (FAOR) catalyzed by Pt catalyst were dramatically improved by adding Bi3+ into the reaction solution. The dynamic structure and microenvironment of in-situ Bi-modified Pt and their impact on the catalytic performances were revealed. A strong correlation was established between the Bi coverage of Pt-based catalysts and their resistance to CO poisoning and performance in GOR and FAOR. When Bi3+ increased to a certain amount, a Bi-shell containing hydroxides was formed on Pt surfaces except the formation of Pt-Bi ensemble. On Pt catalyst covered with 43.9 % Bi, the peak mass-specific activities of GOR and FAOR in forward scans were 4.2 and 34.7 times that of Pt/NCNTs, respectively. The peak electrochemical active surface area (ECSA)-specific activity of FAOR in forward scan for Pt with 52.6 % Bi coverage was 80.6 times that of Pt/NCNTs. The dehydrogenation process in FAOR and the 4-electron pathway in GOR were improved for Bi-modified Pt. The experimental results and DFT calculations indicated that the positively charged Bi and structure of Pt-Bi ensemble improved the adsorption and interaction of negatively charged intermediates, and the enhanced hydroxides facilitated the oxidation and removal of toxic intermediates, such as CO.
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Affiliation(s)
- Xiaomei Ning
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Material Chemistry in Guangdong General University, Lingnan Normal University, Zhanjiang 524048, China
| | - Liang Zhan
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Material Chemistry in Guangdong General University, Lingnan Normal University, Zhanjiang 524048, China.
| | - Xiaosong Zhou
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Material Chemistry in Guangdong General University, Lingnan Normal University, Zhanjiang 524048, China
| | - Jin Luo
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Material Chemistry in Guangdong General University, Lingnan Normal University, Zhanjiang 524048, China
| | - Yanli Wang
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Material Chemistry in Guangdong General University, Lingnan Normal University, Zhanjiang 524048, China
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13
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Nogami N, Tokito T, Zenke Y, Satouchi M, Seto T, Saka H, Ohtani J, Han S, Noguchi K, Nishio M. Phase 1 study of pembrolizumab plus chemotherapy in Japanese patients with extensive-stage small-cell lung cancer. Invest New Drugs 2024; 42:136-144. [PMID: 38300341 PMCID: PMC10891246 DOI: 10.1007/s10637-023-01411-1] [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: 10/26/2023] [Accepted: 11/10/2023] [Indexed: 02/02/2024]
Abstract
BACKGROUND Part E of the KEYNOTE-011 (NCT01840579) study assessed the safety and antitumor activity of pembrolizumab plus platinum-etoposide chemotherapy in Japanese patients with previously untreated extensive-stage small-cell lung cancer (ES-SCLC). METHODS Patients received 4 cycles of pembrolizumab (200 mg) every 3 weeks in combination with cisplatin (75 mg/m2) and etoposide (100 mg/m2; days 1, 2, 3) in cohort 1; with carboplatin (AUC 5 mg/mL/min) and etoposide (100 mg/m2; days 1, 2, 3) in cohort 2; or with cisplatin/etoposide and pegfilgrastim (3.6 mg; cycle 1, day 4) in cohort 3. Combination therapy was followed by pembrolizumab monotherapy (31 cycles). The primary endpoint was safety and tolerability (including dose-limiting toxicities; DLTs). RESULTS Fifteen patients were included in the study (cohort 1, n = 6; cohort 2, n = 6; cohort 3, n = 3). Median time from treatment allocation to data cutoff was 22.1 months (range, 4.1‒32.4 months). DLTs occurred in 3 patients in cohort 1 (one patient with grade 4 laryngeal stenosis and grade 3 febrile neutropenia; two patients with grade 3 febrile neutropenia); no patients in cohorts 2 or 3 experienced DLTs. Grade ≥ 3 treatment-related adverse events included leukopenia (67%) and neutropenia (87%). Among all patients, ORR was 67% (95% CI, 38%‒88%) and median DOR was 4.5 months (range, 2.8‒28.8 months). Median PFS was 4.2 months (95% CI, 3.0‒7.8 months) and median OS was 22.1 months (95% CI, 7.4‒25.9 months). CONCLUSION Pembrolizumab in combination with platinum-etoposide therapy had manageable toxicity with no new safety signals and was associated with antitumor activity in Japanese patients with ES-SCLC. TRIAL REGISTRATION ClinicalTrials.gov , NCT01840579.
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Affiliation(s)
- Naoyuki Nogami
- Department of Community Medicine, Pulmonology and Cardiology, Ehime University Graduate School of Medicine, 454 Shitsukawa, Toon, Ehime, 791-0295, Japan.
| | - Takaaki Tokito
- Division of Respirology, Neurology, and Rheumatology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Yoshitaka Zenke
- Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Miyako Satouchi
- Department of Thoracic Oncology, Hyogo Cancer Center, Akashi, Japan
| | - Takashi Seto
- Department of Thoracic Oncology, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan
| | - Hideo Saka
- Department of Respiratory Medicine, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | | | | | | | - Makoto Nishio
- Department of Thoracic Medical Oncology, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
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14
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Kumar P, Srivastava VC. Ethane and Propane Dehydrogenation on Small Platinum Clusters Supported on Silica: An Ab Initio Molecular Dynamics and DFT Study. Chempluschem 2024; 89:e202300347. [PMID: 37937860 DOI: 10.1002/cplu.202300347] [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: 07/07/2023] [Revised: 10/09/2023] [Accepted: 11/06/2023] [Indexed: 11/09/2023]
Abstract
The size-dependent activity of catalysts has been researched for a long time in the field of catalysis. Positively charged small Pt clusters enhance catalytic activity than bigger clusters and bulk for propane dehydrogenation. We performed DFT calculations on small Pt clusters adsorbed on silica support. The planar structure of Pt clusters is present till 4 Pt atoms, after which three-dimensional structures are observed. AIMD and DFT calculations for silica showed that it has a high surface area and thermal stability suitable to conduct dehydrogenation reactions. The adsorption of Pt cluster on silica results in the formation of directional bonds which affects the properties of the adsorbed Pt catalysts by changing the redox properties. In the bulk phase, ethane and propane molecules undergo dehydrogenation reactions with 0.133 eV atom-1 and 0.244 eV atom-1 energies, respectively. NEB calculations showed that except for Pt-2/SiO2 , all the even Pt clusters require less activation energy than the neighboring odd Pt clusters. Ethane molecule interacting with Pt-4/SiO2 , Pt-5/SiO2 , Pt-6/SiO2 , and propane with Pt-3/SiO2, Pt-4/SiO2 , Pt-5/SiO2 , Pt-6/SiO2 , follows the reverse Horiuti-Polanyi mechanism during dehydrogenation, whereas non-reverse Horiuti-Polanyi mechanism (which requires comparatively lower activation energy) is followed for smaller Pt clusters.
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Affiliation(s)
- Pankaj Kumar
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Vimal Chandra Srivastava
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
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15
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Baz J, Khoury A, Elias MG, Mansour N, Mehanna S, Hammoud O, Gordon CP, Taleb RI, Aldrich-Wright JR, Daher CF. Enhanced potency of a chloro-substituted polyaromatic platinum(II) complex and its platinum(IV) prodrug against lung cancer. Chem Biol Interact 2024; 388:110834. [PMID: 38103879 DOI: 10.1016/j.cbi.2023.110834] [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: 08/09/2023] [Revised: 11/30/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
The present study investigates the anti-neoplastic activity of a platinum (II) complex, Pt(II)5ClSS, and its platinum (IV) di-hydroxido analogue, Pt(IV)5ClSS, against mesenchymal cells (MCs), lung (A549), melanoma (A375) and breast (MDA-MB-231) cancer cells. Both complexes exhibited up to 14-fold improved cytotoxicity compared to cisplatin. NMR was used to determine that ∼25 % of Pt(IV)5ClSS was reduced to Pt(II)5ClSS in the presence of GSH (Glutathione) after 72 h. The complex 1H NMR spectra acquired for Pt(II)5ClSS with GSH shows evidence of degradation and environmental effects (∼30 %). The prominence of the 195Pt peak at ∼ -2800 ppm suggests that a significant amount of Pt(II)5ClSS remained in the mixture. Pt(II)5ClSS and Pt(IV)5ClSS have shown exceptional selectivity to cancer cells in comparison to MCs (IC50 > 150 μM). Western blot analysis of Pt(II)5ClSS and Pt(IV)5ClSS on A549 cells revealed significant upregulation of cleaved PARP-1, BAX/Bcl2 ratio, cleaved caspase 3 and cytochrome thus suggesting apoptosis was induced through the intrinsic pathway. Flow cytometry also revealed significant cell death by apoptosis. Treatment with Pt(II)5ClSS and Pt(IV)5ClSS also showed significant amounts of free radical production while the COMET assay showed that both complexes cause minimal DNA damage. Cellular uptake results via ICP-MS suggest a time-dependent active mode of transport for both complexes with Pt(II)5ClSS being transported at a higher rate compared to Pt(IV)5ClSS. A Dose Escalation Study carried out on BALB/c mice showed that Pt(II)5ClSS and Pt(IV)5ClSS were approximately 8- folds and 12.5-folds, respectively, more tolerated than cisplatin. The present study provides evidence that both complexes may have the characteristics of an efficient and potentially safe anti-tumor drug that could support NSCLC treatment.
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Affiliation(s)
- Joy Baz
- School of Arts and Sciences, Natural Sciences Department, Lebanese American University, Byblos, Mount Lebanon, Lebanon
| | - Aleen Khoury
- School of Science, Western Sydney University, Locked Bag 1797, Penrith South, 2751, NSW, Australia
| | - Maria George Elias
- School of Arts and Sciences, Natural Sciences Department, Lebanese American University, Byblos, Mount Lebanon, Lebanon; School of Science, Western Sydney University, Locked Bag 1797, Penrith South, 2751, NSW, Australia
| | - Najwa Mansour
- School of Arts and Sciences, Natural Sciences Department, Lebanese American University, Byblos, Mount Lebanon, Lebanon
| | - Stephanie Mehanna
- School of Arts and Sciences, Natural Sciences Department, Lebanese American University, Byblos, Mount Lebanon, Lebanon
| | - Omar Hammoud
- School of Arts and Sciences, Natural Sciences Department, Lebanese American University, Byblos, Mount Lebanon, Lebanon
| | - Christopher P Gordon
- School of Science, Western Sydney University, Locked Bag 1797, Penrith South, 2751, NSW, Australia
| | - Robin I Taleb
- School of Arts and Sciences, Natural Sciences Department, Lebanese American University, Byblos, Mount Lebanon, Lebanon
| | - Janice R Aldrich-Wright
- School of Science, Western Sydney University, Locked Bag 1797, Penrith South, 2751, NSW, Australia.
| | - Costantine F Daher
- School of Arts and Sciences, Natural Sciences Department, Lebanese American University, Byblos, Mount Lebanon, Lebanon.
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16
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Song Z, Zhou X, Sun L, Zhang Q, Li Y, Ren X, Zhang H, Zhang L. Enhancing electron interaction between Pt and support for superior electrochemical performance through atomic layer deposition of tungsten oxide. J Colloid Interface Sci 2024; 654:1272-1280. [PMID: 37907006 DOI: 10.1016/j.jcis.2023.10.120] [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: 09/11/2023] [Revised: 10/10/2023] [Accepted: 10/23/2023] [Indexed: 11/02/2023]
Abstract
The stabilization of platinum (Pt) catalysts through strong metal-support interactions is crucial for their successful implementation in fuel cell applications. Tungsten oxide (WO3) has demonstrated excellent CO tolerance and has been recognized as a promising substrate for anchoring and stabilizing Pt nanoparticles (NPs). However, the limited specific surface area of conventional tungsten oxide restricts its effectiveness in dispersing noble metal NPs. In this study, we present a pioneering approach by employing atomic layer deposition (ALD) to create a WO3 interlayer between Pt NPs and a carbon substrate. Using nitrogen-doped carbon nanotubes (NCNT) as the foundation, WO3 nanoparticles (2-5 nm) were selectively synthesized, followed by the subsequent deposition of Pt NPs using a bottom-up approach. The Pt-WO3-NCNT catalyst, with a WO3 bridge layer effectively inserted between the active site and carbon support, has displayed a notable augmentation in electrocatalytic activity and notable stability when compared to commercial Pt catalysts in oxygen reduction reaction (ORR). The detailed microstructure and the enhanced electrochemical reaction mechanism of Pt-WO3-NCNT catalyst has been investigated by X-ray adsorption spectrum and density functional theory (DFT) calculations. This work presents an innovative approach for enhancing the stability of Pt catalysts through the utilization of the ALD technique.
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Affiliation(s)
- Zhongxin Song
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Xia Zhou
- School of Materials and Energy, Electron Microscopy Centre, Lanzhou University, Lanzhou 730000, PR China
| | - Lidan Sun
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Qingfeng Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Yongliang Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Xiangzhong Ren
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Hong Zhang
- School of Materials and Energy, Electron Microscopy Centre, Lanzhou University, Lanzhou 730000, PR China.
| | - Lei Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China.
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Cheng F, Tian T, Wang R, Zhang H, Zhu L, Tang H. Structure-Performance Correlation Inspired Platinum-Assisted Anode with a Homogeneous Ionomer Layer for Proton Exchange Membrane Water Electrolysis. Polymers (Basel) 2024; 16:237. [PMID: 38257036 PMCID: PMC10820505 DOI: 10.3390/polym16020237] [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: 11/23/2023] [Revised: 01/09/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
PEMWE is becoming one of the most promising technologies for efficient and green hydrogen production, while the anode OER process is deeply restricted by the now commercially used iridium oxide with sluggish reaction kinetics and super high cost. Deeply exploring the essential relationship between the underlying substrate materials and the performance of PEMWE cells while simultaneously excavating new practical and convenient methods to reduce costs and increase efficiency is full of challenges. Herein, two representative kinds of iridium oxide were studied, and their performance difference in PEMWE was precisely analyzed with electrochemical techniques and physical characterization and further linked to the ionomer/catalyst compound features. A novel anode with a uniform thin ionomer coating was successfully constructed, which simultaneously optimized the ionomer/catalyst aggregates as well as electrical conductivity, resulting in significantly enhanced PEMWE performance. This rigorous qualitative analysis of the structure-performance relationship as well as effective ionomer-affinitive optimization strategies are of great significance to the development of next-generation high-performance PEM water electrolyzers.
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Affiliation(s)
- Feng Cheng
- National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies, Foshan Xianhu Laboratory, Foshan 528200, China
- Wuhan Institute of Hydrogen and Fuel Cell Industrial Technology, 555 Cultural Avenue, Hongshan District, Wuhan 430070, China
| | - Tian Tian
- National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies, Foshan Xianhu Laboratory, Foshan 528200, China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Rui Wang
- National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies, Foshan Xianhu Laboratory, Foshan 528200, China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Hao Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Liyan Zhu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Haolin Tang
- National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies, Foshan Xianhu Laboratory, Foshan 528200, China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
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18
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Koskela H, Li Y, Joutsiniemi T, Muranen T, Isoviita VM, Huhtinen K, Micoli G, Lavikka K, Marchi G, Hietanen S, Virtanen A, Hautaniemi S, Oikkonen J, Hynninen J. HRD related signature 3 predicts clinical outcome in advanced tubo-ovarian high-grade serous carcinoma. Gynecol Oncol 2024; 180:91-98. [PMID: 38061276 DOI: 10.1016/j.ygyno.2023.11.027] [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: 08/13/2023] [Revised: 11/14/2023] [Accepted: 11/25/2023] [Indexed: 02/18/2024]
Abstract
OBJECTIVES We evaluated usability of single base substitution signature 3 (Sig3) as a biomarker for homologous recombination deficiency (HRD) in tubo-ovarian high-grade serous carcinoma (HGSC). MATERIALS AND METHODS This prospective observational trial includes 165 patients with advanced HGSC. Fresh tissue samples (n = 456) from multiple intra-abdominal areas at diagnosis and after neoadjuvant chemotherapy (NACT) were collected for whole-genome sequencing. Sig3 was assessed by fitting samples independently with COSMIC v3.2 reference signatures. An HR scar assay was applied for comparison. Progression-free survival (PFS) and overall survival (OS) were studied using Kaplan-Meier and Cox regression analysis. RESULTS Sig3 has a bimodal distribution, eliminating the need for an arbitrary cutoff typical in HR scar tests. Sig3 could be assessed from samples with low (10%) cancer cell proportion and was consistent between multiple samples and stable during NACT. At diagnosis, 74 (45%) patients were HRD (Sig3+), while 91 (55%) were HR proficient (HRP, Sig3-). Sig3+ patients had longer PFS and OS than Sig3- patients (22 vs. 13 months and 51 vs. 34 months respectively, both p < 0.001). Sig3 successfully distinguished the poor prognostic HRP group among BRCAwt patients (PFS 19 months for Sig3+ and 13 months for Sig3- patients, p < 0.001). However, Sig3 at diagnosis did not predict chemoresponse anymore in the first relapse. The patient-level concordance between Sig3 and HR scar assay was 87%, and patients with HRD according to both tests had the longest median PFS. CONCLUSIONS Sig3 is a prognostic marker in advanced HGSC and useful tool in patient stratification for HRD.
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Affiliation(s)
- Heidi Koskela
- Department of Obstetrics and Gynecology, University of Turku and Turku University Hospital, Turku, Finland
| | - Yilin Li
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Titta Joutsiniemi
- Department of Obstetrics and Gynecology, University of Turku and Turku University Hospital, Turku, Finland
| | - Taru Muranen
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Veli-Matti Isoviita
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Kaisa Huhtinen
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Institute of Biomedicine and FICAN West Cancer Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Giulia Micoli
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Kari Lavikka
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Giovanni Marchi
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Sakari Hietanen
- Department of Obstetrics and Gynecology, University of Turku and Turku University Hospital, Turku, Finland
| | - Anni Virtanen
- Department of Pathology, University of Helsinki and HUS Diagnostic Center, Helsinki University Hospital, Helsinki, Finland
| | - Sampsa Hautaniemi
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jaana Oikkonen
- Research Program in Systems Oncology, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Johanna Hynninen
- Department of Obstetrics and Gynecology, University of Turku and Turku University Hospital, Turku, Finland.
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19
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Shen WX, Li GH, Li YJ, Zhang PF, Yu JX, Shang D, Wang QS. Prognostic Significance of Tumor Mutation Burden among Patients with Non-small Cell Lung Cancer Who Received Platinum-based Adjuvant Chemotherapy: An Exploratory Study. J Cancer Prev 2023; 28:175-184. [PMID: 38205359 PMCID: PMC10774481 DOI: 10.15430/jcp.2023.28.4.175] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/24/2023] [Accepted: 09/27/2023] [Indexed: 01/12/2024] Open
Abstract
This study aimed to investigate the prognostic significance of tumor mutation burden (TMB) among patients with non-small cell lung cancer (NSCLC) who received platinum-based adjuvant chemotherapy. Tumor tissue specimens after surgical resection were collected for DNA extraction. Somatic mutation detection and TMB analysis were conducted using next-generation sequencing (NGS). Recurrence status of the patients was assessed in the hospital during the adjuvant chemotherapy period, and long-term survival data of patients were obtained by telephone follow-up. Univariate analysis between TMB status and prognosis was carried out by survival analysis. A retrospective review of 78 patients with non-squamous NSCLC who received platinum-based adjuvant chemotherapy showed a median disease-free survival of 3.6 years and median overall survival (OS) of 5.3 years. NGS analysis exhibited that the most common mutated somatic genes among the 78 patients were tumor suppressor protein p53 (TP53), epidermal growth factor receptor, low-density lipoprotein receptor related protein 1B, DNA methyltransferase 3 alpha and FAT atypical cadherin 3, and their prevalence was 56.4%, 48.7%, 37.2%, 30.7%, and 25.6%, respectively. TMB status was divided into TMB-L (≤ 4.5/Mb) and TMB-H (> 4.5/Mb) based on the median TMB threshold. Relevance of TMB to prognosis suggested that the median OS of patients with TMB-L was significantly longer than that of patients with TMB-H (NR vs. 4.6, P = 0.014). Higher TMB status conferred a worse implication on OS among patients with non-squamous NSCLC who received platinum-based adjuvant chemotherapy.
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Affiliation(s)
- Wei-Xi Shen
- Department of Oncology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Guang-Hua Li
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yu-Jia Li
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Peng-Fei Zhang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jia-Xing Yu
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Di Shang
- Department of Oncology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qiu-Shi Wang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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20
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Fu R, Zhao B, Chen M, Fu X, Zhang Q, Cui Y, Hu X, Zhou W. Moving beyond cisplatin resistance: mechanisms, challenges, and prospects for overcoming recurrence in clinical cancer therapy. Med Oncol 2023; 41:9. [PMID: 38063931 DOI: 10.1007/s12032-023-02237-w] [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: 10/03/2023] [Accepted: 11/03/2023] [Indexed: 12/18/2023]
Abstract
Cisplatin, a classical platinum-based chemotherapy agent, has been a frontline treatment for various cancers for decades. However, its effectiveness has been hindered by the development of resistance, leading to cancer relapse. Addressing this challenge is crucial for both clinical practice and research. Hence, the imperative to unravel the intricate mechanisms underpinning cisplatin resistance and to uncover novel strategies to overcome this barrier holds immense significance. Within this review, we summarized the classification of platinum agents, highlighting their roles in therapeutic landscapes. We discussed the diverse mechanisms behind cisplatin resistance, including diminished intracellular cisplatin accumulation, intracellular detoxification, DNA repair, autophagy responses, heat shock proteins, tumor microenvironment, cancer stem cells, epigenetic regulation, ferroptosis resistance, and metabolic reprogramming. Drawing from this comprehensive understanding, we offered a series of prospective solutions to surmount cisplatin resistance and consequently mitigate the specter of disease recurrence within the realm of clinical cancer therapy.
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Affiliation(s)
- Rui Fu
- The School and Hospital of Stomatology, Tianjin Medical University, Tianjin, 300070, China
| | - Borui Zhao
- The School and Hospital of Stomatology, Tianjin Medical University, Tianjin, 300070, China
| | - Min Chen
- The School and Hospital of Stomatology, Tianjin Medical University, Tianjin, 300070, China
| | - Xiaolong Fu
- Department of Stomatology, Tianjin Haihe Hospital, Tianjin, 300222, China
| | - Qian Zhang
- The School and Hospital of Stomatology, Tianjin Medical University, Tianjin, 300070, China
| | - Yange Cui
- Program in Gene Expression and Regulation, The Wistar Institute, Philadelphia, PA, 19104, USA
| | - Xin Hu
- The School and Hospital of Stomatology, Tianjin Medical University, Tianjin, 300070, China.
| | - Wei Zhou
- Cardiovascular Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, 19104, USA.
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21
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Radael GN, Oliveira GG, Pontes RM. A DFT study of ethanol interaction with the bimetallic clusters of PtSn and its implications on reactivity. J Mol Graph Model 2023; 125:108621. [PMID: 37689026 DOI: 10.1016/j.jmgm.2023.108621] [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: 06/30/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023]
Abstract
The comprehension of the factors affecting the adsorption of ethanol over metals and metal alloys is a crucial step for the rational development of new catalysts for hydrogen production through ethanol reforming. In this work, we analyze the effect of combining Pt and Sn on a metal cluster on the complexation energy and reactivity for OH dehydrogenation of ethanol. Metal clusters of Pt10, Sn10 and Pt5Sn5 had their putative minimum located with the help of the artificial bee colony algorithm. Whereas the isolated Pt cluster shows a high degree of polarization (ESP surface), the Sn cluster shows a quite uniform electron density surface. The PtSn cluster is strongly polarized, with Pt atoms withdrawing electron density of Sn atoms. Complexation occurs with the oxygen atom of ethanol directed towards the point of highest electron potential in the ESP surface. Pt presents the highest complexation energy, -20.90 kcal/mol, against only -7.83 kcal/mol (at the B97-3c level). For the PtSn cluster, the value is intermediate, namely -12.39 kcal/mol. The more malleable electron density of Pt and its electron affinity are responsible for its highest complexation energy. These characteristics are partially transferred to the PtSn cluster. QTAIM results show that, for the PtSn cluster, the O-H bond in ethanol is somewhat weaker than for pure Pt and Sn. As a consequence, the energy barrier for the O-H dehydrogenation has its lowest value for the PtSn cluster, which shows that the alloying of two metals can lead to quite quite unexpected results opening the perspective for a more rational fine tuning of catalysts properties.
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Affiliation(s)
- Graziela N Radael
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5790, Maringá, Paraná, CEP 87900-020, Brazil
| | - Gabriel G Oliveira
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5790, Maringá, Paraná, CEP 87900-020, Brazil
| | - Rodrigo M Pontes
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5790, Maringá, Paraná, CEP 87900-020, Brazil.
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Barachini S, Ghelardoni S, Varga ZV, Mehanna RA, Montt-Guevara MM, Ferdinandy P, Madonna R. Antineoplastic drugs inducing cardiac and vascular toxicity - An update. Vascul Pharmacol 2023; 153:107223. [PMID: 37678516 DOI: 10.1016/j.vph.2023.107223] [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: 06/28/2023] [Revised: 08/14/2023] [Accepted: 09/04/2023] [Indexed: 09/09/2023]
Abstract
With the improvement in cancer prognosis due to advances in antitumor therapeutic protocols and new targeted and immunotherapies, we are witnessing a growing increase in survival, however, at the same timeincrease in morbidity among cancer survivors as a consequences of the increased cardiovascular adverse effects of antineoplastic drugs. Common cardiovascular complications of antineoplastic therapies may include cardiac complications such as arrhythmias, myocardial ischemia, left ventricular dysfunction culminating in heart failure as well as vascular complications including arterial hypertension, thromboembolic events, and accelerated atherosclerosis. The toxicity results from the fact that these drugs not only target cancer cells but also affect normal cells within the cardiovascular system. In this article, we review the clinical features and main mechanisms implicated in antineoplastic drug-induced cardiovascular toxicity, including oxidative stress, inflammation, immunothrombosis and growth factors-induced signaling pathways.
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Affiliation(s)
- Serena Barachini
- Department of Clinical and Experimental Medicine, Laboratory for Cell Therapy, University of Pisa, Pisa, Italy
| | - Sandra Ghelardoni
- Department of Pathology, Laboratory of Biochemistry, University of Pisa, Pisa, Italy
| | - Zoltán V Varga
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; HCEMM-SU Cardiometabolic Immunology Research Group, Budapest, Hungary; MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Budapest, Hungary
| | - Radwa A Mehanna
- Medical Physiology Department, Center of Excellence for Research in Regenerative Medicine and Applications (CERRMA), Faculty of Medicine, Alexandria University, Egypt
| | | | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; Pharmahungary Group, Szeged, Hungary
| | - Rosalinda Madonna
- Department of Pathology, Cardiology Division, University of Pisa, Pisa, Italy.
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23
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Rostán S, Porto S, Barbosa CLN, Assis D, Alvarez N, Machado FS, Mahler G, Otero L. A novel palladium complex with a coumarin-thiosemicarbazone hybrid ligand inhibits Trypanosoma cruzi release from host cells and lowers the parasitemia in vivo. J Biol Inorg Chem 2023; 28:711-723. [PMID: 37768364 DOI: 10.1007/s00775-023-02020-2] [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: 03/01/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
In this work, two analogous coumarin-thio and semicarbazone hybrid compounds were prepared and evaluated as a potential antichagasic agents. Furthermore, palladium and platinum complexes with the thiosemicarbazone derivative as ligand (L1) were obtained in order to establish the effect of metal complexation on the antiparasitic activity. All compounds were fully characterized both in solution and in solid state including the resolution of the crystal structure of the palladium complex by X-ray diffraction methods. Unexpectedly, all experimental and theoretical characterizations in the solid state, demonstrated that the obtained palladium and platinum complexes are structurally different: [PdCl(L1)] and [PtCl2(HL1)]. All the studied compounds lower the proliferation of the amastigote form of Trypanosoma cruzi while some of them also have an effect on the trypomastigote stage. Additionally, the compounds inhibit T. cruzi release from host cells in variable extents. The Pd compound presented a remarkable profile in all the in vitro experiments, and it showed no toxicity for mammalian cells in the assayed concentrations. In this sense, in vivo experiments were performed for this compound using an acute model of Chagas disease. Results showed that the complex significantly lowered the parasite count in the mice blood with no significant toxicity.
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Affiliation(s)
- Santiago Rostán
- Graduate Program in Chemistry, Facultad de Química, Universidad de La República, Montevideo, Uruguay
- Área Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de La República, Montevideo, Uruguay
| | - Samuel Porto
- Laboratorio de Inmunorregulación y Enfermedades Infecciosas (LIDIN), Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Cesar L N Barbosa
- Laboratorio de Inmunorregulación y Enfermedades Infecciosas (LIDIN), Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Diego Assis
- Laboratorio de Inmunorregulación y Enfermedades Infecciosas (LIDIN), Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Natalia Alvarez
- Área Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de La República, Montevideo, Uruguay
| | - Fabiana Simão Machado
- Laboratorio de Inmunorregulación y Enfermedades Infecciosas (LIDIN), Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Graciela Mahler
- Laboratorio de Química Farmacéutica, Departamento de Química Orgánica, Facultad de Química, Universidad de La República, Montevideo, Uruguay
| | - Lucía Otero
- Área Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de La República, Montevideo, Uruguay.
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24
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Beitzen-Heineke A, Rolling CC, Seidel C, Erley J, Molwitz I, Muellerleile K, Saering D, Senftinger J, Börschel N, Engel NW, Bokemeyer C, Adam G, Tahir E, Chen H. Long-term cardiotoxicity in germ cell cancer survivors after platinum-based chemotherapy: cardiac MR shows impaired systolic function and tissue alterations. Eur Radiol 2023:10.1007/s00330-023-10420-w. [PMID: 37982836 DOI: 10.1007/s00330-023-10420-w] [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: 05/11/2023] [Revised: 09/04/2023] [Accepted: 09/07/2023] [Indexed: 11/21/2023]
Abstract
OBJECTIVES Long-term toxicities of germ cell cancer (GCC) treatment are of particular importance in young men with a life expectancy of several decades after curative treatment. This study aimed to investigate the long-term effects of platinum-based chemotherapy on cardiac function and myocardial tissue in GCC survivors by cardiac magnetic resonance (CMR) imaging. METHODS Asymptomatic GCC survivors ≥ 3 years after platinum-based chemotherapy and age-matched healthy controls underwent CMR assessment, including left ventricular (LV) and right ventricular (RV) ejection fraction (EF), strain analysis, late gadolinium enhancement (LGE) imaging, and T1/T2 mapping. RESULTS Forty-four survivors (age 44 [interquartile range, IQR 37-52] years; follow-up time 10 [IQR 5-15] years after chemotherapy) and 21 controls were evaluated. LV- and RVEF were lower in GCC survivors compared to controls (LVEF 56 ± 5% vs. 59 ± 5%, p = 0.017; RVEF 50 ± 7% vs. 55 ± 7%, p = 0.008). Seven percent (3/44) of survivors showed reduced LVEF (< 50%), and 41% (18/44) showed borderline LVEF (50-54%). The strain analysis revealed significantly reduced deformation compared to controls (LV global longitudinal strain [GLS] -13 ± 2% vs. -15 ± 1%, p < 0.001; RV GLS -15 ± 4% vs. -19 ± 4%, p = 0.005). Tissue characterization revealed focal myocardial fibrosis in 9 survivors (20%) and lower myocardial native T1 times in survivors compared to controls (1202 ± 25 ms vs. 1226 ± 37 ms, p = 0.016). Attenuated LVEF was observed after two cycles of platinum-based chemotherapy (54 ± 5% vs. 62 ± 5%, p < 0.001). CONCLUSION Based on CMR evaluation, combination chemotherapy with cumulative cisplatin ≥ 200 mg/m2 is associated with attenuated biventricular systolic function and myocardial tissue alterations in asymptomatic long-term GCC survivors. CLINICAL RELEVANCE STATEMENT Platinum-based chemotherapy is associated with decreased systolic function, non-ischemic focal myocardial scar, and decreased T1 times in asymptomatic long-term germ cell cancer survivors. Clinicians should be particularly aware of the risk of cardiac toxicity after platinum-based chemotherapy. KEY POINTS • Platinum-based chemotherapy is associated with attenuation of biventricular systolic function, lower myocardial T1 relaxation times, and non-ischemic late gadolinium enhancement. • Decreased systolic function and non-ischemic late gadolinium enhancement are associated with a cumulative cisplatin dose of ≥ 200 mg/m2. • Cardiac MRI can help to identify chemotherapy-associated changes in cardiac function and tissue in asymptomatic long-term germ cell cancer survivors.
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Affiliation(s)
- Antonia Beitzen-Heineke
- Department for Oncology, Hematology and Bone Marrow Transplantation with the Section of Pneumology, University Medical Center Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany.
| | - Christina Charlotte Rolling
- Department for Oncology, Hematology and Bone Marrow Transplantation with the Section of Pneumology, University Medical Center Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Christoph Seidel
- Department for Oncology, Hematology and Bone Marrow Transplantation with the Section of Pneumology, University Medical Center Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Jennifer Erley
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Isabel Molwitz
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Kai Muellerleile
- Department of General and Interventional Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Dennis Saering
- Information Technology and Image Processing, University of Applied Sciences Wedel, Wedel, Germany
| | - Juliana Senftinger
- Department of General and Interventional Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Niklas Börschel
- Department for Oncology, Hematology and Bone Marrow Transplantation with the Section of Pneumology, University Medical Center Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Nils Wolfgang Engel
- Department for Oncology, Hematology and Bone Marrow Transplantation with the Section of Pneumology, University Medical Center Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Carsten Bokemeyer
- Department for Oncology, Hematology and Bone Marrow Transplantation with the Section of Pneumology, University Medical Center Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Enver Tahir
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Hang Chen
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
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25
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Gao G, Zhu G, Chen X, Sun Z, Cabot A. Optimizing Pt-Based Alloy Electrocatalysts for Improved Hydrogen Evolution Performance in Alkaline Electrolytes: A Comprehensive Review. ACS Nano 2023; 17:20804-20824. [PMID: 37922197 DOI: 10.1021/acsnano.3c05810] [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: 11/05/2023]
Abstract
The splitting of water through electrocatalysis offers a sustainable method for the production of hydrogen. In alkaline electrolytes, the lack of protons forces water dissociation to occur before the hydrogen evolution reaction (HER). While pure Pt is the gold standard electrocatalyst in acidic electrolytes, since the 5d orbital in Pt is nearly fully occupied, when it overlaps with the molecular orbital of water, it generates a Pauli repulsion. As a result, the formation of a Pt-H* bond in an alkaline environment is difficult, which slows the HER and negates the benefits of using a pure Pt catalyst. To overcome this limitation, Pt can be alloyed with transition metals, such as Fe, Co, and Ni. This approach has the potential not only to enhance the performance but also to increase the Pt dispersion and decrease its usage, thus overall improving the catalyst's cost-effectiveness. The excellent water adsorption and dissociation ability of transition metals contributes to the generation of a proton-rich local environment near the Pt-based alloy that promotes HER. Significant progress has been achieved in comprehending the alkaline HER mechanism through the manipulation of the structure and composition of electrocatalysts based on the Pt alloy. The objective of this review is to analyze and condense the latest developments in the production of Pt-based alloy electrocatalysts for alkaline HER. It focuses on the modified performance of Pt-based alloys and clarifies the design principles and catalytic mechanism of the catalysts from both an experimental and theoretical perspective. This review also highlights some of the difficulties encountered during the HER and the opportunities for increasing the HER performance. Finally, guidance for the development of more efficient Pt-based alloy electrocatalysts is provided.
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Affiliation(s)
- Guoliang Gao
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, China
- i-lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Guang Zhu
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, China
| | - Xueli Chen
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, China
| | - Zixu Sun
- Key Lab for Special Functional Materials of Ministry of Education, National and Local Joint Engineering Research Center for High Efficiency Display and Lighting Technology, School of Materials Science and Engineering, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
| | - Andreu Cabot
- Catalonia Institute for Energy Research - IREC, Sant Adrià de Besòs, Barcelona 08930, Spain
- Catalan Institution for Research and Advanced Studies - ICREA, Pg. Lluís Companys 23, Barcelona 08010, Spain
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Kastner A, Schueffl H, Yassemipour PA, Keppler BK, Heffeter P, Kowol CR. Insertion of (Bioactive) Equatorial Ligands into Platinum(IV) Complexes. Angew Chem Int Ed Engl 2023; 62:e202311468. [PMID: 37703130 PMCID: PMC10952260 DOI: 10.1002/anie.202311468] [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: 08/07/2023] [Revised: 09/06/2023] [Accepted: 09/13/2023] [Indexed: 09/15/2023]
Abstract
Platinum(IV) prodrugs are highly interesting alternatives to platinum(II) anticancer therapeutics due to their increased tumor selectivity and reduced side effects. In contrast to the established theory, we recently observed that the equatorial ligand(s) of e.g. oxaliplatin(IV) complexes can be hydrolyzed with formation of [(DACH)Pt(OHeq )2 (OAcax )2 ]. In the work presented here, we investigated the reactivity and synthetic usability of this complex to be exploited as a precursor for the development of novel platinum(IV) complexes, not able to be synthesized by conventional protocols. Indeed, we could substitute the equatorial hydroxido ligand(s) e.g. by one or two monodentate biotin ligands (which would be oxidized under standard methods). The formed complexes turned out to be very stable with slow ligand release after reduction, ideal for long-circulating tumor-targeting strategies. Therefore, two platinum(IV) complexes with equatorial maleimides, capable of exploiting serum albumin as a natural nanocarrier, were synthesized as well. The complexes showed massively prolonged plasma half-life and distinctly improved anticancer activity in vivo compared to oxaliplatin. Taken together, the newly developed synthetic platform allows the simple and specific insertion of equatorial ligands into platinum(IV) complexes. This will enable the attachment of three different (bioactive) moieties generating targeted triple-action platinum(IV) prodrugs within one single platinum complex.
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Affiliation(s)
- Alexander Kastner
- University of ViennaFaculty of ChemistryInstitute of Inorganic ChemistryWaehringer Str. 421090ViennaAustria
- University of ViennaVienna Doctoral School in Chemistry (DoSChem)Waehringer Str. 421090ViennaAustria
| | - Hemma Schueffl
- Center for Cancer Research and Comprehensive Cancer CenterMedical University of ViennaBorschkegasse 8a1090ViennaAustria
| | - Patrick A. Yassemipour
- University of ViennaFaculty of ChemistryInstitute of Inorganic ChemistryWaehringer Str. 421090ViennaAustria
| | - Bernhard K. Keppler
- University of ViennaFaculty of ChemistryInstitute of Inorganic ChemistryWaehringer Str. 421090ViennaAustria
- Research Cluster “Translational Cancer Therapy Research”1090ViennaAustria
| | - Petra Heffeter
- Center for Cancer Research and Comprehensive Cancer CenterMedical University of ViennaBorschkegasse 8a1090ViennaAustria
- Research Cluster “Translational Cancer Therapy Research”1090ViennaAustria
| | - Christian R. Kowol
- University of ViennaFaculty of ChemistryInstitute of Inorganic ChemistryWaehringer Str. 421090ViennaAustria
- Research Cluster “Translational Cancer Therapy Research”1090ViennaAustria
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Upadhyay A, Nepalia A, Bera A, Saini DK, Chakravarty AR. A Platinum(II) Boron-dipyrromethene Complex for Cellular Imaging and Mitochondria-targeted Photodynamic Therapy in Red Light. Chem Asian J 2023; 18:e202300667. [PMID: 37706570 DOI: 10.1002/asia.202300667] [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: 07/31/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 09/15/2023]
Abstract
Cisplatin-derived platinum(II) complexes [Pt(NH3 )2 (pacac)](NO3 ) (1, DPP-Pt) and [Pt(NH3 )2 (Acac-RB)](NO3 ) (2, Acacplatin-RB), where Hpacac is 1,3-diphenyl-1,3-propanedione and HAcac-RB is a red-light active distyryl-BODIPY-appended acetylacetone ligand, are prepared, characterized and their photodynamic therapy (PDT) activity studied (RB abbreviated for red-light BODIPY). Complex 2 displayed an intense absorption band at λ=652 nm (ϵ=7.3×104 M-1 cm-1 ) and 601 nm (ϵ=3.1×104 M-1 cm-1 ) in 1 : 1 DMSO-DPBS (Dulbecco's Phosphate Buffered Saline). Its emission profile includes a broad maximum at ~673 nm (λex =630 nm). The fluorescence quantum yield (ΦF ) of HAcac-RB and 2 are 0.19 and 0.07, respectively. Dichlorodihydrofluorescein diacetate and 1,3-diphenylisobenzofuran assay of complex 2 indicated photogeneration of singlet oxygen (ΦΔ : 0.36) as reactive oxygen species (ROS). Light irradiation caused only minor extent of ligand release forming chemo-active cisplatin analogue. The complex showed ~70-100 fold enhancement in cytotoxicity on light exposure in A549 lung cancer cells and MDA-MB-231 multidrug resistant breast cancer cells, giving half maximal inhibitory concentration (IC50 ) of 0.9-1.8 μM. Confocal imaging showed its mitochondrial localization and complex 2 exhibited anti-metastasis properties. Immunostaining of β-tubulin and Annexin V-FITC/propidium iodide staining displayed complex 2 induced photo-selective microtubule rupture and cellular apoptosis, respectively.
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Affiliation(s)
- Aarti Upadhyay
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bengaluru, 560012, Karnataka, India
| | - Amrita Nepalia
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bengaluru, 560012, Karnataka, India
| | - Arpan Bera
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bengaluru, 560012, Karnataka, India
| | - Deepak Kumar Saini
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bengaluru, 560012, Karnataka, India
| | - Akhil R Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bengaluru, 560012, Karnataka, India
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Berrones Reyes J, Sherin PS, Sarkar A, Kuimova MK, Vilar R. Platinum(II)-Based Optical Probes for Imaging Quadruplex DNA Structures via Phosphorescence Lifetime Imaging Microscopy. Angew Chem Int Ed Engl 2023; 62:e202310402. [PMID: 37642538 PMCID: PMC10952808 DOI: 10.1002/anie.202310402] [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: 07/21/2023] [Revised: 08/27/2023] [Accepted: 08/29/2023] [Indexed: 08/31/2023]
Abstract
G-quadruplex DNA is a non-canonical structure that forms in guanine-rich regions of the genome. There is increasing evidence showing that G-quadruplexes have important biological functions, and therefore molecular tools to visualise these structures are important. Herein we report on a series of new cyclometallated platinum(II) complexes which, upon binding to G-quadruplex DNA, display an increase in their phosphorescence, acting as switch-on probes. More importantly, upon binding to G-quadruplexes they display a selective and distinct lengthening of their emission lifetime. We show that this effect can be used to selectively visualise these structures in cells using Phosphorescence Lifetime Imaging Microscopy (PLIM).
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Affiliation(s)
- Jessica Berrones Reyes
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
| | - Peter S. Sherin
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
| | - Amrita Sarkar
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
| | - Marina K. Kuimova
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
| | - Ramon Vilar
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
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Domenianni LI, Bauer M, Schmidt-Räntsch T, Lindner J, Schneider S, Vöhringer P. Photoinduced Metallonitrene Formation by N 2 Elimination from Azide Diradical Ligands. Angew Chem Int Ed Engl 2023; 62:e202309618. [PMID: 37549374 DOI: 10.1002/anie.202309618] [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: 07/07/2023] [Revised: 08/04/2023] [Accepted: 08/07/2023] [Indexed: 08/09/2023]
Abstract
Transition-metal nitrides/nitrenes are highly promising reagents for catalytic nitrogen-atom-transfer reactivity. They are typically prepared in situ upon optically induced N2 elimination from azido precursors. A full exploitation of their catalytic potential, however, requires in-depth knowledge of the primary photo-induced processes and the structural/electronic factors mediating the N2 loss with birth of the terminal metal-nitrogen core. Using femtosecond infrared spectroscopy, we elucidate here the primary molecular-level mechanisms responsible for the formation of a unique platinum(II) nitrene with a triplet ground state from a closed-shell platinum(II) azide precursor. The spectroscopic data in combination with quantum-chemical calculations provide compelling evidence that product formation requires the initial occupation of a singlet excited state with an anionic azide diradical ligand that is bound to a low-spin d8 -configured PtII ion. Subsequent intersystem crossing generates the Pt-bound triplet azide diradical, which smoothly evolves into the triplet nitrene via N2 loss in a near barrierless adiabatic dissociation. Our data highlight the importance of the productive, N2 -releasing state possessing azide ππ* character as a design principle for accessing efficient N-atom-transfer catalysts.
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Affiliation(s)
- Luis I Domenianni
- Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität, Wegelerstraße 12, 53115, Bonn, Germany
| | - Markus Bauer
- Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität, Wegelerstraße 12, 53115, Bonn, Germany
| | - Till Schmidt-Räntsch
- Georg-August-Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077, Göttingen, Germany
| | - Jörg Lindner
- Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität, Wegelerstraße 12, 53115, Bonn, Germany
| | - Sven Schneider
- Georg-August-Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077, Göttingen, Germany
| | - Peter Vöhringer
- Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität, Wegelerstraße 12, 53115, Bonn, Germany
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Berrones Reyes J, Sherin PS, Sarkar A, Kuimova MK, Vilar R. Platinum(II)-Based Optical Probes for Imaging Quadruplex DNA Structures via Phosphorescence Lifetime Imaging Microscopy. Angew Chem Weinheim Bergstr Ger 2023; 135:e202310402. [PMID: 38516271 PMCID: PMC10952342 DOI: 10.1002/ange.202310402] [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: 07/21/2023] [Indexed: 03/23/2024]
Abstract
G-quadruplex DNA is a non-canonical structure that forms in guanine-rich regions of the genome. There is increasing evidence showing that G-quadruplexes have important biological functions, and therefore molecular tools to visualise these structures are important. Herein we report on a series of new cyclometallated platinum(II) complexes which, upon binding to G-quadruplex DNA, display an increase in their phosphorescence, acting as switch-on probes. More importantly, upon binding to G-quadruplexes they display a selective and distinct lengthening of their emission lifetime. We show that this effect can be used to selectively visualise these structures in cells using Phosphorescence Lifetime Imaging Microscopy (PLIM).
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Affiliation(s)
- Jessica Berrones Reyes
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
| | - Peter S. Sherin
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
| | - Amrita Sarkar
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
| | - Marina K. Kuimova
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
| | - Ramon Vilar
- Department of ChemistryImperial College LondonWhite City Campus82 Wood LaneLondonW12 0BZUK
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31
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Guo J, Sun Y, Liu G. The mechanism of copper transporters in ovarian cancer cells and the prospect of cuproptosis. J Inorg Biochem 2023; 247:112324. [PMID: 37481825 DOI: 10.1016/j.jinorgbio.2023.112324] [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: 05/14/2023] [Revised: 07/07/2023] [Accepted: 07/09/2023] [Indexed: 07/25/2023]
Abstract
Copper transporters can not only carry copper (Cu) to maintain the homeostasis of Cu in cells but also transport platinum-based chemotherapy drugs. The effect of copper transporters on chemosensitivity has been demonstrated in a variety of malignancies. In addition, recent studies have reported that copper transporters can act as vectors to induce cuproptosis. Therefore, copper transporters can act on cells through different mechanisms to achieve different purposes. This review mainly describes the current research progress of the intracellular transport mechanism of copper transporters and cuproptosis, and prospects for the application of them in the treatment of ovarian cancer (OC).
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Affiliation(s)
- Jiahuan Guo
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, China; Key Laboratory of Cancer Prevention and Therapy of Tianjin, Department of Gynecologic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
| | - Yue Sun
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Guoyan Liu
- Key Laboratory of Cancer Prevention and Therapy of Tianjin, Department of Gynecologic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China.
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Wang P, Yang Y, Wen H, Li D, Zhang H, Wang Y. Progress in construction and release of natural polysaccharide- platinum nanomedicines: A review. Int J Biol Macromol 2023; 250:126143. [PMID: 37544564 DOI: 10.1016/j.ijbiomac.2023.126143] [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: 06/07/2023] [Revised: 07/26/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Natural polysaccharides are natural biomaterials that have become candidate materials for nano-drug delivery systems due to their excellent biodegradability and biocompatibility. Platinum (Pt) drugs have been widely used in the clinical therapy for various solid tumors. However, their extensive systemic toxicity and the drug resistance acquired by cancer cells limit the applications of platinum drugs. Modern nanobiotechnology provides the possibility for targeted delivery of platinum drugs to the tumor site, thereby minimizing toxicity and optimizing the efficacies of the drugs. In recent years, numerous natural polysaccharide-platinum nanomedicine delivery carriers have been developed, such as nanomicelles, nanospheres, nanogels, etc. Herein, we provide an overview on the construction and drug release of natural polysaccharide-Pt nanomedicines in recent years. Current challenges and future prospectives in this field are also put forward. In general, combining with irradiation and tumor microenvironment provides a significant research direction for the construction of natural polysaccharide-platinum nanomedicines and the release of responsive drugs in the future.
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Affiliation(s)
- Pengge Wang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China; College of Biological and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing City, Jiangsu Province 211816, China
| | - Yunxia Yang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China; Jiangsu Province Engineering Research Center of Agricultural Breeding Pollution Control and Resource, Yancheng Teachers University, Yancheng 224007, China; Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng Teachers University, Yancheng 224007, China.
| | - Haoyu Wen
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Dongqing Li
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Hongmei Zhang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Yanqing Wang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China.
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Zhao F, Shen G, Dong Q, Xin Y, Huo X, Wang M, Liu Z, Zhao Y, Ren D, Xie Q, Liu Z, Li Z, Gao L, Du F, Zhao J. Impact of platinum-based chemotherapy on the prognosis of early triple-negative breast cancer: a systematic review and meta-analysis. Clin Exp Med 2023; 23:2025-2040. [PMID: 36422737 DOI: 10.1007/s10238-022-00940-y] [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: 09/22/2022] [Accepted: 11/02/2022] [Indexed: 11/25/2022]
Abstract
Although platinum-based chemotherapy can improve pathologic complete response (pCR) in patients with triple-negative breast cancer (TNBC), the impact on survival of platinum-based neoadjuvant and adjuvant chemotherapy is still controversial. Our meta-analysis aimed at analyzing survival with platinum-based neoadjuvant and adjuvant chemotherapy in patients with TNBC. We searched PubMed, EMBASE, MEDLINE, Cochrane databases, and several major conferences up to January 2021. Fixed and random models were used for our meta-analysis. Disease-free survival (DFS), overall survival (OS), and side effects data were extracted from the included literature in addition to the corresponding pooled hazard ratio (HR) and odds ratio (OR) with 95% confidence intervals (CIs). A total of nine studies involving 3247 patients were included. The pooled analysis suggested that compared with anthracycline- and/or paclitaxel-based chemotherapy, platinum-based chemotherapy could further improve DFS (HR = 0.56, 95% CI 0.45-0.67, p < 0.01) and OS (HR = 0.54, 95% CI 0.38-0.70, p < 0.01) in patients with TNBC. The subgroup analysis showed that platinum-based chemotherapy could further improve DFS (HR = 0.59, 95% CI 0.43-0.74, p < 0.01) and OS (HR = 0.61, 95% CI 0.40-0.83, p < 0.01) in neoadjuvant chemotherapy and DFS (HR = 0.53, 95% CI 0.37-0.69, p < 0.01) and OS (HR = 0.46, 95% CI 0.23-0.69, p < 0.01) in adjuvant chemotherapy compared with anthracycline- and/or paclitaxel-based chemotherapy in patients with TNBC. In addition, compared with anthracycline-based chemotherapy, platinum-based chemotherapy without anthracycline chemotherapy could further improve DFS (HR = 0.53, 95% CI 0.37-0.70, p < 0.01) and OS (HR = 0.46, 95%CI 0.19-0.72, p < 0.01) in patients with TNBC. Compared with anthracycline- and/or paclitaxel-based chemotherapy, all-grade diarrhea, fatigue, and grade ≥ 3 anemia were higher in platinum-based chemotherapy. In contrast, all-grade anemia, leukopenia, neutropenia, peripheral neuropathy, myalgia/arthralgia, cardiac toxicity were lower in platinum-based chemotherapy; grade ≥ 3 leukopenia, neutropenia and myalgia/arthralgia were also lower. Compared with anthracycline- and/or paclitaxel-based chemotherapy, platinum-based chemotherapy was more associated with improved DFS and OS in TNBC patients. The benefit of survival is consistent with platinum-based neoadjuvant and adjuvant chemotherapy. The side effects of platinum-based chemotherapy are tolerable.
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Affiliation(s)
- Fuxing Zhao
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Guoshuang Shen
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Qiuxia Dong
- The Fifth People's Hospital of Qinghai Province, The First Ward of Oncology, Xining, 810000, China
| | - Yuanfang Xin
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Xingfa Huo
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Miaozhou Wang
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Zhen Liu
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Yi Zhao
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Dengfeng Ren
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Qiqi Xie
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Zhilin Liu
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Zitao Li
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Lihong Gao
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China
| | - Feng Du
- Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education/Beijing), The VIPII Gastrointestinal Cancer Division of Medical Department, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Jiuda Zhao
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, China.
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Zhu F, Wu Y, Wang H. Advance in integrating platinum-based chemotherapy with radiotherapy for locally advanced nasopharyngeal carcinoma. Front Oncol 2023; 13:1259331. [PMID: 37860184 PMCID: PMC10583715 DOI: 10.3389/fonc.2023.1259331] [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: 07/15/2023] [Accepted: 09/12/2023] [Indexed: 10/21/2023] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a malignant tumor characterized by the malignant transformation of nasopharyngeal epithelial cells. It is highly sensitive to radiation therapy, making radiotherapy the primary treatment modality. However, 60-80% of patients are initially diagnosed with locally advanced NPC (LA-NPC), where radiotherapy alone often fails to achieve desirable outcomes. Therefore, combining radiotherapy with chemotherapy has emerged as an effective strategy to optimize treatment for LA-NPC patients. Among the various chemotherapy regimens, concurrent chemoradiotherapy (CCRT) using platinum-based drugs has been established as the most commonly utilized approach for LA-NPC patients. The extensive utilization of platinum drugs in clinical settings underscores their therapeutic potential and emphasizes ongoing efforts in the development of novel platinum-based complexes for anticancer therapy. The aim of this review is to elucidate the remarkable advances made in the field of platinum-based therapies for nasopharyngeal carcinoma, emphasizing their transformative impact on patient prognosis.
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Affiliation(s)
- Fubin Zhu
- Department of Cancer Center, Chengdu Seventh People's Hospital (Affiliated Cancer Hospital of Chengdu Medical College), Chengdu, China
| | - Yidan Wu
- Center for Geriatric Medicine Assessment and Treatment, The Fourth People's Hospital of Chengdu, Chengdu, China
| | - Hua Wang
- Department of General Surgery, Chengdu Public Health Clinical Medical Center, Sichuan, Chengdu, China
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Wang X, Yue J, Kang YK, Gao SL, Yuan P. [Application value of DNA damage repair variants in adjuvant therapy of triple negative breast cancer]. Zhonghua Zhong Liu Za Zhi 2023; 45:787-795. [PMID: 37805443 DOI: 10.3760/cma.j.cn112152-20220912-00612] [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] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
Objective: To investigate the correlation between adjuvant chemotherapy with platinum-containing regimens and DNA damage repair (DDR) defects in early-stage triple negative breast cancer (TNBC), and to provide a basis for precise treatment of TNBC. Methods: Next-generation sequencing (NGS) testing was performed on postoperative breast cancer specimens selected from the Cancer Hospital of Chinese Academy of Medical Sciences from June 2009 to October 2015 to analyze the correlation between DDR gene variants and the efficacy of adjuvant chemotherapy with TNBC platinum-containing regimens, and thus to screen the superior population for adjuvant chemotherapy with TNBC platinum-containing regimens. The study used t-test, χ(2) test, Fisher's exact test, rank sum test and multifactorial logistic analysis to assess the associations between mutated genes and clinicopathological characteristics and prognosis, and Log-rank test and Cox proportional risk model were used for survival and correlation analysis. Results: NGS results were successfully obtained in 149 patients (74 in the platinum-containing group and 75 in the platinum-free group), with a 97.3% (145/149) DDR gene mutation rate and a median number of 4 mutations in all patients. 5-year disease-free survival (DFS) was 85.4% and 75.0% for patients with DDR gene mutations and DDR gene wild-type, respectively, without statistical difference (P=0.825). The 5-year DFS rates of patients with homologous recombination repair (HRR) pathway mutation were 84.6% in platinum-containing (TCb) group and 84.9% in platinum-free (EC-T) group (P=0.554), respectively. The 5-year DFS rates of patients with and without mutations in the platinite-containing HRR pathway were 84.9% and 85.0%, respectively (P=0.751). The number of DDR pathways with mutations and the number of DDR gene mutations were not associated with prognosis (both P>0.05). PIK3CA mutation patients in TCb group had a worse prognosis than wild-type patients (5-year DFS were 71.4% and 88.1%, P=0.037), and KMT2D mutation patients in EC-T group had a worse prognosis than wild-type patients (5-year DFS were 76.9% and 86.8%, P=0.039). Conclusions: DDR gene variation is common in TNBC, more clinical studies are needed to prove whether DDR variation can serve as effective biomarkers for treatment with platinum.
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Affiliation(s)
- X Wang
- Department of VIP Medical Services, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J Yue
- Department of VIP Medical Services, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y K Kang
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S L Gao
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - P Yuan
- Department of VIP Medical Services, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Li W, Gan J, Liu Y, Zou Y, Zhang S, Qu Y. Platinum and Frustrated Lewis Pairs on Ceria as Dual-Active Sites for Efficient Reverse Water-Gas Shift Reaction at Low Temperatures. Angew Chem Int Ed Engl 2023; 62:e202305661. [PMID: 37479952 DOI: 10.1002/anie.202305661] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 04/23/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/23/2023]
Abstract
The low-temperature reverse water-gas shift (RWGS) reaction faces the following obstacles: low activity and unsatisfactory selectivity. Herein, the dual-active sites of platinum (Pt) clusters and frustrated Lewis pair (FLP) on porous CeO2 nanorods (Ptcluster /PN-CeO2 ) provide an interface-independent pathway to boost high performance RWGS reaction at low temperatures. Mechanistic investigations illustrate that Pt clusters can effectively activate and dissociate H2 . The FLP sites, instead of the metal and support interfaces, not only enhance the strong adsorption and activation of CO2 , but also significantly weaken CO adsorption on FLP to facilitate CO release and suppress the CH4 formation. With the help of hydrogen spillover from Pt to PN-CeO2 , the Ptcluster /PN-CeO2 catalysts achieved a CO yield of 29.6 %, which is very close to the thermodynamic equilibrium yield of CO (29.8 %) at 350 °C. Meanwhile, the Ptcluster /PN-CeO2 catalysts delivered a large turnover frequency of 8720 h-1 . Moreover, Ptcluster /PN-CeO2 operated stably and continuously for at least 840 h. This finding provides a promising path toward optimizing the RWGS reaction.
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Affiliation(s)
- Wenbin Li
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Jie Gan
- School of Materials and Environmental Engineering, Chizhou University, Chizhou, 247000, China
| | - Yuxuan Liu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Yong Zou
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Sai Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China
| | - Yongquan Qu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
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Raut A, Fang H, Lin YC, Fu S, Sprouster D, Shimogawa R, Frenkel AI, Bae C, Douglin JC, Lillojad J, Tammeveski K, Zeng Z, Bliznakov S, Rafailovich M, Dekel DR. Migration and Precipitation of Platinum in Anion-Exchange Membrane Fuel Cells. Angew Chem Int Ed Engl 2023; 62:e202306754. [PMID: 37464925 PMCID: PMC10640718 DOI: 10.1002/anie.202306754] [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: 05/13/2023] [Revised: 07/13/2023] [Accepted: 07/18/2023] [Indexed: 07/20/2023]
Abstract
Despite the recent progress in increasing the power generation of Anion-exchange membrane fuel cells (AEMFCs), their durability is still far lower than that of Proton exchange membrane fuel cells (PEMFCs). Using the complementary techniques of X-ray micro-computed tomography (CT), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) spectroscopy, we have identified Pt ion migration as an important factor to explain the decay in performance of AEMFCs. In alkaline media Pt+2 ions are easily formed which then either undergo dissolution into the carbon support or migrate to the membrane. In contrast to PEMFCs, where hydrogen cross over reduces the ions forming a vertical "Pt line" within the membrane, the ions in the AEM are trapped by charged groups within the membrane, leading to disintegration of the membrane and failure. Diffusion of the metal components is still observed when the Pt/C of the cathode is substituted with a FeCo-N-C catalyst, but in this case the Fe and Co ions are not trapped within the membrane, but rather migrate into the anode, thereby increasing the stability of the membrane.
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Affiliation(s)
- Aniket Raut
- Department of Materials Science and Chemical Engineering, State University of New York at Stony Brook, New York 11794, United States of America
| | - Haoyan Fang
- Department of Materials Science and Chemical Engineering, State University of New York at Stony Brook, New York 11794, United States of America
| | - Yu-Chung Lin
- Department of Materials Science and Chemical Engineering, State University of New York at Stony Brook, New York 11794, United States of America
| | - Shi Fu
- Department of Materials Science and Chemical Engineering, State University of New York at Stony Brook, New York 11794, United States of America
| | - David Sprouster
- Department of Materials Science and Chemical Engineering, State University of New York at Stony Brook, New York 11794, United States of America
| | - Ryuichi Shimogawa
- Department of Materials Science and Chemical Engineering, State University of New York at Stony Brook, New York 11794, United States of America
- Mitsubishi Chemical Corporation, Science & Innovation Center, 1000, Kamoshida-cho, Aoba-ku, Yokohama 227-8502, Japan
| | - Anatoly I. Frenkel
- Department of Materials Science and Chemical Engineering, State University of New York at Stony Brook, New York 11794, United States of America
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States of America
| | - Chulsung Bae
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, United States of America
| | - John C. Douglin
- The Wolfson Department of Chemical Engineering, Technion –Israel Institute of Technology, Haifa 3200003, Israel
| | - Jaana Lillojad
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Kaido Tammeveski
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Zhiqiao Zeng
- Center for Clean Energy Engineering, University of Connecticut, Storrs, Connecticut 06269, United States of America
| | - Stoyan Bliznakov
- Center for Clean Energy Engineering, University of Connecticut, Storrs, Connecticut 06269, United States of America
| | - Miriam Rafailovich
- Department of Materials Science and Chemical Engineering, State University of New York at Stony Brook, New York 11794, United States of America
| | - Dario R. Dekel
- The Wolfson Department of Chemical Engineering, Technion –Israel Institute of Technology, Haifa 3200003, Israel
- The Nancy & Stephen Grand Technion Energy Program (GTEP), Technion – Israel Institute of Technology, Haifa, 3200003, Israel
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Yang Y, Wang P, Ji Z, Xu X, Zhang H, Wang Y. Polysaccharide‑ platinum complexes for cancer theranostics. Carbohydr Polym 2023; 315:120997. [PMID: 37230639 DOI: 10.1016/j.carbpol.2023.120997] [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: 02/07/2023] [Revised: 04/21/2023] [Accepted: 05/05/2023] [Indexed: 05/27/2023]
Abstract
Platinum anticancer drugs have been explored and developed in recent years to reduce systematic toxicities and resist drug resistance. Polysaccharides derived from nature have abundant structures as well as pharmacological activities. The review provides insights on the design, synthesis, characterization and associating therapeutic application of platinum complexes with polysaccharides that are classified by electronic charge. The complexes give birth to multifunctional properties with enhanced drug accumulation, improved tumor selectivity and achieved synergistic antitumor effect in cancer therapy. Several techniques developing polysaccharides-based carriers newly are also discussed. Moreover, the lasted immunoregulatory activities of innate immune reactions triggered by polysaccharides are summarized. Finally, we discuss the current shortcomings and outline potential strategies for improving platinum-based personalized cancer treatment. Using platinum-polysaccharides complexes for improving the immunotherapy efficiency represents a promising framework in future.
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Affiliation(s)
- Yunxia Yang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China; Jiangsu Province Engineering Research Center of Agricultural Breeding Pollution Control and Resource, Yancheng Teachers University, Yancheng 224007, China; Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng Teachers University, Yancheng 224007, China.
| | - Pengge Wang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Zengrui Ji
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Xi Xu
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China.
| | - Hongmei Zhang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Yanqing Wang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China.
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Li H, Cai S, Deng L, Xiao Z, Guo Q, Qiang J, Gong J, Gu Y, Liu Z. Prediction of platinum resistance for advanced high-grade serous ovarian carcinoma using MRI-based radiomics nomogram. Eur Radiol 2023; 33:5298-5308. [PMID: 36995415 DOI: 10.1007/s00330-023-09552-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 05/13/2022] [Revised: 01/19/2023] [Accepted: 02/13/2023] [Indexed: 03/31/2023]
Abstract
OBJECTIVE This study aimed to explore the value of a radiomics nomogram to identify platinum resistance and predict the progression-free survival (PFS) of patients with advanced high-grade serous ovarian carcinoma (HGSOC). MATERIALS AND METHODS In this multicenter retrospective study, 301 patients with advanced HGSOC underwent radiomics features extraction from the whole primary tumor on contrast-enhanced T1WI and T2WI. The radiomics features were selected by the support vector machine-based recursive feature elimination method, and then the radiomics signature was generated. Furthermore, a radiomics nomogram was developed using the radiomics signature and clinical characteristics by multivariable logistic regression. The predictive performance was evaluated using receiver operating characteristic analysis. The net reclassification index (NRI), integrated discrimination improvement (IDI), and decision curve analysis (DCA) were used to compare the clinical utility and benefits of different models. RESULTS Five features significantly correlated with platinum resistance were selected to construct the radiomics model. The radiomics nomogram, combining radiomics signatures with three clinical characteristics (FIGO stage, CA-125, and residual tumor), had a higher area under the curve (AUC) compared with the clinical model alone (AUC: 0.799 vs 0.747), with positive NRI and IDI. The net benefit of the radiomics nomogram is typically higher than clinical-only and radiomics-only models. Kaplan-Meier survival analysis showed that the radiomics nomogram-defined high-risk groups had shorter PFS compared with the low-risk groups in patients with advanced HGSOC. CONCLUSIONS The radiomics nomogram can identify platinum resistance and predict PFS. It helps make the personalized management of advanced HGSOC. KEY POINTS • The radiomics-based approach has the potential to identify platinum resistance and can help make the personalized management of advanced HGSOC. • The radiomics-clinical nomogram showed improved performance compared with either of them alone for predicting platinum-resistant HGSOC. • The proposed nomogram performed well in predicting the PFS time of patients with low-risk and high-risk HGSOC in both training and testing cohorts.
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Affiliation(s)
- Haiming Li
- Department of Radiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
- Guangdong Cardiovascular Institute, Guangzhou, 510080, China
- Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangzhou, 510080, China
| | - Songqi Cai
- Department of Radiology, Zhongshan Hospital, FudanUniversity, Shanghai, 200032, China
- Shanghai Institute of Medical Imaging, Shanghai, 200032, China
- Department of Cancer Center, Zhongshan Hospital, FudanUniversity, Shanghai, 200032, China
| | - Lin Deng
- Department of Radiology, Jinshan Hospital, FudanUniversity, Shanghai, 201508, China
| | - Zebin Xiao
- Department of Biomedical Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Qinhao Guo
- Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangzhou, 510080, China
- Department of Gynecological Oncology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
| | - Jinwei Qiang
- Department of Radiology, Jinshan Hospital, FudanUniversity, Shanghai, 201508, China
| | - Jing Gong
- Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangzhou, 510080, China
| | - Yajia Gu
- Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China.
- Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangzhou, 510080, China.
| | - Zaiyi Liu
- Department of Radiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
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Zahraie N, Haghighi H, Salehi F, Daneshvar F, Tamaddon P, Sattarahmady N. Pulsed sonodynamic therapy of melanoma cancer cells using nanoparticles of and mesoporous platinum. Ultrasound Med Biol 2023:S0301-5629(23)00205-3. [PMID: 37414634 DOI: 10.1016/j.ultrasmedbio.2023.06.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 07/08/2023]
Abstract
OBJECTIVE Noble metal nanomaterials have been introduced as ideal sonosensitizers for sonodynamic therapy (SDT) of cancer. In this research, platinum nanoparticles (PtNPs) and mesoporous platinum (MPt) were first synthesized and then evaluated as novel sonosensitizers. METHODS Ultrasound waves were radiated at two different power densities and two different pulse ratios to develop a pulsed radiation route for SDT of the malignant melanoma cell line C540 (B16/F10). Fluorescence emission was recorded as an indicator of intracellular reactive oxygen generation during the treatment. RESULTS Platinum nanoparticles had an average diameter of 12 ± 7 nm and a zeta potential of -17.6 mV; also, MPt had a sponge-like and highly porous structure with a pore size <11 nm and a zeta potential of -39.5 mV. Both PtNPs and MPt, particularly the latter, enhanced the rate of inhibition of tumor cell growth on ultrasound radiation at an output power density of 1.0 W cm-2 and pulse ratio of 30% over 10 min without intensifying temperature. CONCLUSION Use of the developed pulsed (rather than continuous) radiation in SDT and PtNPs or MPT, without hyperthermia, resulted in a new effective cancer treatment method based on the mechanisms of cavitation and/or ROS generation.
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Affiliation(s)
- Niloofar Zahraie
- Nanomedicine and Nanobiology Research Center and Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hanieh Haghighi
- Nanomedicine and Nanobiology Research Center and Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Salehi
- Nanomedicine and Nanobiology Research Center and Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Daneshvar
- Nanomedicine and Nanobiology Research Center and Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Paria Tamaddon
- Nanomedicine and Nanobiology Research Center and Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Naghmeh Sattarahmady
- Nanomedicine and Nanobiology Research Center and Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
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41
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Kazemi M, Hosseini MR, Zamaniyan A, Ahmadi A. Application of cupric or ferric ions as environmentally benign oxidants to the chloride leaching of platinum from spent reforming catalysts. J Environ Manage 2023; 337:117768. [PMID: 36963178 DOI: 10.1016/j.jenvman.2023.117768] [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] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/03/2023] [Accepted: 03/18/2023] [Indexed: 06/18/2023]
Abstract
Recovery of precious metals has been considered due to their limited availability and resources, and the reduction of environmental hazards. In this study, the environmentally friendly chloride leaching method was used to recover platinum (Pt) from a spent reforming catalyst. Hydrochloric acid and sodium chloride were applied as the complexing agent and ferric or cupric chloride (FeCl3, CuCl2) was used as oxidants. Response surface methodology was implemented to investigate the influences of acid concentration (1-3 M), oxidant concentration (0.5-1.3 M), and temperature (70-90 °C) on the Pt extraction at a fixed duration of 3 h using two separate Box-Behnken experimental designs. Increasing temperature and acid concentration improved the Pt recovery from ∼52% to ∼89% in the presence of 1 M FeCl3, and from ∼29% to 94% in the presence of 0.75 M CuCl2. Generally, at low acid concentrations, ferric chloride was more efficient in Pt dissolution, while, at high acid concentrations, cupric chloride performed better. Finally, the platinum content of the pregnant leach solution was precipitated by adding a saturated ammonium chloride solution. According to the results of the X-ray diffraction analysis, the obtained precipitate was mainly composed of ammonium hexachloroplatinate, sodium chloride, and ammonium chloride. Also, the Pt assay of the powder was determined as 21%.
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Affiliation(s)
- Mahsa Kazemi
- Department of Mining Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
| | - Mohammad Raouf Hosseini
- Department of Mining Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran.
| | - Akbar Zamaniyan
- Downstream Technologies Research Center, Research Institute of Petroleum Industry, Tehran 14665-137, Iran.
| | - Ali Ahmadi
- Department of Mining Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
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Li B, Xiong W, Cao Y, Zhou X, Zhu H, Li M, Yang L, Shao P. Targeting of platinum capture under 1+1 aqua regia using robust and recyclable polymeric polyamine resin: Adsorption performance and mechanism. Environ Res 2023; 227:115814. [PMID: 37003547 DOI: 10.1016/j.envres.2023.115814] [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: 03/13/2023] [Accepted: 03/29/2023] [Indexed: 05/08/2023]
Abstract
The targeted capture of platinum from complex and harsh acidic digests such as those platinum-containing secondary resources is essential from the perspectives of green development. Here, a polyamine chelating resin (CMPs-PEI) with excellent selectivity and acid resistance was prepared by a nucleophilic substitution reaction using chloromethylated polystyrene as the parent and polyethyleneimine as the modifier. The experimental results revealed that the adsorbent showed excellent adsorption effect on platinum under different acidities, and its maximum adsorption capacity was up to 337 mg/g at pH 2. More impressively, a rather high capacity of 162.41 mg/g was achieved in 1 + 1 aqua regia (pH -0.7), which was much higher than other adsorbent materials under the same conditions. In addition, the recovery of platinum by CMPs-PEI in practical platinum-containing iron concentrate abatement solution was 100 %. Mechanistic studies showed that the protonated amine groups on CMPs-PEI bound PtCl62- and partially reduced PtCl42- by electrostatic attraction. Meanwhile, the excellent regeneration performance of CMPs-PEI indicated that it showed great potential for green and economic recovery of precious metal ions.
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Affiliation(s)
- Bohan Li
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Wei Xiong
- Jiangxi Hongcheng Environment Co., Ltd., Nanchang 330038, PR China.
| | - Ying Cao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xiaoyu Zhou
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China.
| | - Haochen Zhu
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Min Li
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, PR China
| | - Liming Yang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Penghui Shao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China.
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Xiong A, Li W, Li X, Fan Y, Ma Z, Fang J, Xie Q, Zhuang W, Kang M, Wang J, Xu T, Xu M, Zhi L, Liu Q, Wang N, Zhou C. Efficacy and safety of KN046, a novel bispecific antibody against PD-L1 and CTLA-4, in patients with non-small cell lung cancer who failed platinum-based chemotherapy: a phase II study. Eur J Cancer 2023; 190:112936. [PMID: 37393762 DOI: 10.1016/j.ejca.2023.05.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 03/26/2023] [Revised: 05/25/2023] [Accepted: 05/29/2023] [Indexed: 07/04/2023]
Abstract
BACKGROUND This study aimed to evaluate the efficacy and safety of KN046, a novel recombinant humanised antibody targeting PD-L1 and CTLA-4 in advanced non-small cell lung cancer (NSCLC) patients after failure or intolerance to platinum-based chemotherapy. METHODS In this multi-centre, open-label phase II clinical trial, patients were enroled after failure or intolerance to platinum-based chemotherapy. KN046 at 3 mg/kg or 5 mg/kg was administered intravenously every 2weeks. The primary end-point was objective response rate (ORR) evaluated by a blinded independent review committee (BIRC). RESULTS A total of 30 and 34 patients were included in the 3 mg/kg (cohort A) and 5 mg/kg (cohort B) cohorts. On 31st August 2021, the median follow-up duration was 24.08 months (interquartile [IQR], 22.28, 24.84) and 19.35months (IQR, 17.25, 20.90) in the 3 mg/kg and 5 mg/kg cohorts, respectively. BIRC-assessed ORRs were 13.3% and 14.7% in the 3 mg/kg and 5 mg/kg cohorts, respectively. Median progression-free survival was 3.68 (95% confidence interval [CI] 3.22-7.29) and 3.68 (95%CI 1.81-7.39) months, while overall survival was 19.70 (95.5%CI 15.44-not estimated [NE]) and 13.04 (95.5%CI 9.86-NE) months, respectively. The most common treatment-related adverse events (TRAEs) were anaemia (28.1%), hyperglycaemia (26.7%), and infusion-related reactions (26.7%). The incidence rates of grade ≥ 3 TRAEs and TRAEs leading to treatment discontinuation were 42.2% and 14.1%, respectively. CONCLUSIONS Both 3 mg/kg and 5 mg/kg KN046 showed promising efficacy and favourable safety profile for advanced NSCLC after failure or intolerance to previous platinum-based chemotherapy. TRIAL REGISTRATION NUMBER NCT03838848.
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Affiliation(s)
- Anwen Xiong
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Shanghai, China
| | - Wei Li
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Shanghai, China
| | - Xingya Li
- Department of Medical Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yun Fan
- Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Zhiyong Ma
- Department of Respiratory Medicine, Henan Cancer Hospital, Zhengzhou, China
| | - Jian Fang
- Second Department of Thoracic Oncology, Beijing Cancer Hospital, Beijing, China
| | - Qiang Xie
- Area Three Department of Medical Oncology, Fuzhou Pulmonary Hospital of Fujian, Fuzhou, China
| | - Wu Zhuang
- Department of Thoracic Oncology, Fujian Cancer Hospital, Fuzhou, China
| | - Mafei Kang
- Department of Medical Oncology, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Jing Wang
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Shanghai, China
| | - Ting Xu
- Medical, Jiangsu Alphamab Biopharmaceuticals Co., Ltd, Suzhou, China
| | - Mo Xu
- Medical, Jiangsu Alphamab Biopharmaceuticals Co., Ltd, Suzhou, China
| | - Lihua Zhi
- Medical, Jiangsu Alphamab Biopharmaceuticals Co., Ltd, Suzhou, China
| | - Qing Liu
- Medical, Jiangsu Alphamab Biopharmaceuticals Co., Ltd, Suzhou, China
| | - Ni Wang
- Biostatistic, Jiangsu Alphamab Biopharmaceuticals Co., Ltd, Suzhou, China
| | - Caicun Zhou
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Shanghai, China.
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Yin M, Lu C, Zhou H, Liu Q, Yang J. Differential molecular pathway expression according to chemotherapeutic response in ovarian clear cell carcinoma. BMC Womens Health 2023; 23:298. [PMID: 37270486 DOI: 10.1186/s12905-023-02420-1] [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: 02/13/2023] [Accepted: 05/09/2023] [Indexed: 06/05/2023] Open
Abstract
OBJECTIVE Ovarian clear cell carcinoma (OCCC) is a distinct entity from epithelial ovarian cancer. The prognosis of advanced and recurrent disease is very poor due to resistance to chemotherapeutic agents. Our aim was to explore the molecular alterations among OCCC patients with different chemotherapeutic responses and to obtain insights into potential biomarkers. METHODS Twenty-four OCCC patients were included in this study. The patients were divided into two groups based on the relapse time after the first-line platinum-based chemotherapy: the platinum-sensitive group (PS) and the platinum-resistant group (PR). Gene expression profiling was performed using NanoString nCounter PanCancer Pathways Panel. RESULTS Gene expression analysis comparing PR vs. PS identified 32 differentially expressed genes: 17 upregulated genes and 15 downregulated genes. Most of these genes are involved in the PI3K, MAPK and Cell Cycle-Apoptosis pathways. In particular, eight genes are involved in two or all three pathways. CONCLUSION The dysregulated genes in the PI3K, MAPK, and Cell Cycle-Apoptosis pathways identified and postulated mechanisms could help to probe biomarkers of OCCC platinum sensitivity, providing a research basis for further exploration of targeted therapy.
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Affiliation(s)
- Min Yin
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric and Gynecologic Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chunli Lu
- Neurospine Center, Xuanwu Hospital, National Center for Neurological Disorders, China International Neuroscience Institute (CHINA-INI), Capital Medical University, Beijing, China
| | - Huimei Zhou
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric and Gynecologic Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Qian Liu
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric and Gynecologic Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiaxin Yang
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric and Gynecologic Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Xiang D, Han X, Li J, Zhang J, Xiao H, Li T, Zhao X, Xiong H, Xu M, Bi W. Combination of IDO inhibitors and platinum(IV) prodrugs reverses low immune responses to enhance cancer chemotherapy and immunotherapy for osteosarcoma. Mater Today Bio 2023; 20:100675. [PMID: 37304579 PMCID: PMC10250924 DOI: 10.1016/j.mtbio.2023.100675] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/06/2023] [Accepted: 05/18/2023] [Indexed: 06/13/2023] Open
Abstract
In recent years, immune checkpoint blockades (ICBs) have made great progress in the treatment of cancer. However, most ICBs have not yet been observed to be satisfactory in the treatment of osteosarcoma. Herein, we designed composite nanoparticles (NP-Pt-IDOi) from a reactive oxygen species (ROS) sensitive amphiphilic polymer (PHPM) with thiol-ketal bonds in the main chain to encapsulate a Pt(IV) prodrug (Pt(IV)-C12) and an indoleamine-(2/3)-dioxygenase (IDO) inhibitor (IDOi, NLG919). Once NP-Pt-IDOi enter the cancer cells, the polymeric nanoparticles could dissociate due to the intracellular ROS, and release Pt(IV)-C12 and NLG919. Pt(IV)-C12 induces DNA damage and activates the cGAS-STING pathway, increasing infiltration of CD8+ T cells in the tumor microenvironment. In addition, NLG919 inhibits tryptophan metabolism and enhances CD8+ T cell activity, ultimately activating anti-tumor immunity and enhancing the anti-tumor effects of platinum-based drugs. NP-Pt-IDOi were shown to have superior anti-cancer activity in vitro and in vivo in mouse models of osteosarcoma, providing a new clinical paradigm for combining chemotherapy with immunotherapy for osteosarcoma.
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Affiliation(s)
- Dongquan Xiang
- Medical School of Chinese PLA, Beijing, 100853, PR China
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Xinli Han
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
- School of Medicine, Nankai University, Tianjin, 300074, PR China
| | - Jianxiong Li
- Medical School of Chinese PLA, Beijing, 100853, PR China
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Jiabing Zhang
- Xidian University, Xi'an, 710071, PR China
- Graduate School of Medical School of Chinese PLA Hospital, Beijing, 100853, PR China
| | - Haihua Xiao
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Ting Li
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China
| | - Xuelin Zhao
- Medical School of Chinese PLA, Beijing, 100853, PR China
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
| | - Hejian Xiong
- Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Meng Xu
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
| | - Wenzhi Bi
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
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46
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YILDIRIM S, Özveren A. Second-Line Chemotherapy in Gastric Cancer: a Retrospective Study. Indian J Surg Oncol 2023; 14:423-427. [PMID: 37324318 PMCID: PMC10267055 DOI: 10.1007/s13193-022-01695-4] [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: 07/25/2022] [Accepted: 12/22/2022] [Indexed: 01/06/2023] Open
Abstract
Second-line chemotherapy is recommended for patients who have disease progression after first-line chemotherapy and have a good performance status. The aim of our study is thus to determine which chemotherapy regimen is more appropriate for second-line gastric cancer treatment. Patients were included if they met the following inclusion criteria: metastatic gastric adenocarcinoma pathology; no previous treatment for local gastric cancer (surgery, chemotherapy, or radiotherapy); received first-line chemotherapy for metastatic gastric cancer and had the disease progress afterward; had adequate organ functions for second-line chemotherapy; had an Eastern Cooperative Oncology Group (ECOG) score 0-2; and were HER-2 negative. The patients were examined in three groups according to the second-line chemotherapy regimen they received. These three groups were compared in terms of overall and progression-free survival. The three groups were statistically similar in overall survival, which was the primary endpoint of the study; the median overall survival was 5 months in the FOLFIRI group (n = 79), 6.5 months in the platinum-based group (n = 55), and 5.6 months in the taxane-based group (n = 40) (p = 0.554). There was no statistical difference between the groups' progression-free survival either; the median progression-free survival time was 3.43 months in the FOLFIRI group, 4 months in the platinum-based group, and 2.77 months in the taxane-based group (p = 0.546). There was no statistically significant difference between the three irinotecan-based, platinum-based, and taxane-based treatments. According to our study's results, the chemotherapy given in second-line treatment should be decided on an individual basis according to toxicity and cost.
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Affiliation(s)
- Serkan YILDIRIM
- Medical Oncology Department MD, Başkent University Hospital, Konya, Turkey 42080
| | - Ahmet Özveren
- Medical Oncology Department MD, İzmir Kent Hospital, Izmir, Turkey 35070
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47
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Maliszewski B, Bayrakdar T, Lambert P, Hamdouna L, Trivelli X, Cavallo L, Poater A, Beliš M, Lafon O, Van Hecke K, Ormerod D, Cazin C, Nahra F, Nolan SP. Dear Editor, Please find enclosed a manuscript entitled:PtII-N-Heterocyclic Carbene Complexes in Solvent-Free Alkene Hydrosilylation. Chemistry 2023:e202301259. [PMID: 37196153 DOI: 10.1002/chem.202301259] [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: 04/20/2023] [Revised: 05/17/2023] [Accepted: 05/17/2023] [Indexed: 05/19/2023]
Abstract
The structural characterization and catalytic activity of a series of platinum(II) complexes, bearing N-heterocyclic carbenes (NHC) as supporting ligands, are reported. The study presents a structure-activity relationship within a group of pre-catalysts, and mechanistic insights into the catalyst activation step. An exceptional catalytic performance of one of the complexes is presented and an attractive solvent-free and open-to-air alkene hydrosilylation protocol, featuring efficient platinum removal, are disclosed.
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48
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Beck AM, Frey H, Huang X, Clark AH, Goodman ED, Cargnello M, Willinger MG, van Bokhoven JA. Controlling the SMSI Overlayer Structure in Pt/TiO2 Catalysts Prevents Particle Evaporation. Angew Chem Int Ed Engl 2023:e202301468. [PMID: 37139920 DOI: 10.1002/anie.202301468] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 01/30/2023] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 05/05/2023]
Abstract
Platinum nanoparticles (NPs) supported by titania exhibit a strong metal-support interaction (SMSI)[1] that can induce overlayer formation and encapsulation of the NP´s with a thin layer of support material. This encapsulation modifies the catalyst's properties, such as increasing its chemoselectivity[2] and stabilizing it against sintering.[3] Encapsulation is typically induced during high-temperature reductive activation and can be reversed through oxidative treatment.[1] However, recent findings indicate that the overlayer can be stable in oxygen.[4,5] Using in situ transmission electron microscopy, we investigated how the overlayer changes with varying conditions. We found that exposure oxygen below 400°C caused disorder and removal of the overlayer upon subsequent hydrogen treatment. In contrast, elevating the temperature to 900°C while maintaining the oxygen atmosphere preserved the overlayer, preventing platinum evaporation when exposed to oxygen. Our findings demonstrate how different treatments can influence the stability of nanoparticles with or without titania overlayers. expanding the concept of SMSI and enabling noble metal catalysts to operate in harsh environments without evaporation associated losses during burn-off cycling.
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Affiliation(s)
- Arik Malte Beck
- Eidgenössische Technische Hochschule Zürich Departement Chemie und Angewandte Biowissenschaften: Eidgenossische Technische Hochschule Zurich Departement Chemie und Angewandte Biowissenschaften, Department of Chemistry and Applied Biosciences, SWITZERLAND
| | - Hannes Frey
- Eidgenössische Technische Hochschule Zürich Departement Chemie und Angewandte Biowissenschaften: Eidgenossische Technische Hochschule Zurich Departement Chemie und Angewandte Biowissenschaften, Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1-5/10, 8093, Zürich, SWITZERLAND
| | - Xing Huang
- Fuzhou University, College of Chemistry, CHINA
| | - Adam H Clark
- Paul Scherrer Institute: Paul Scherrer Institut PSI, Swiss Light Source - Super XAS, SWITZERLAND
| | - Emmett D Goodman
- Stanford University, Department: Chemical Engineering, UNITED STATES
| | - Matteo Cargnello
- Stanford University, Department: Chemical Engineering, UNITED STATES
| | - Marc Georg Willinger
- Technische Universität München: Technische Universitat Munchen, Fakultät für Chemie, GERMANY
| | - Jeroen A van Bokhoven
- Eidgenossische Technische Hochschule Zurich, Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1, CH-8093, Zurich, SWITZERLAND
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49
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Lye YL, Shan B, Jia CH, Liu J, Hou J, Du WL, Feng R, Liang P. Toxic Epidermal Necrolysis Induced by Sintilimab: A Case Report. Ann Dermatol 2023; 35:S100-S102. [PMID: 37853877 PMCID: PMC10608386 DOI: 10.5021/ad.21.072] [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: 06/03/2021] [Revised: 09/27/2021] [Accepted: 11/04/2021] [Indexed: 10/20/2023] Open
Abstract
Sintilimab is an anti-programmed cell death receptor-1 antibody. The phase III clinical trial ORIENT-12 confirmed the safety of sintilimab combined with pemetrexed/platinum in the treatment of advanced squamous non-small cell lung cancer. Skin reactions are the most commonly reported adverse events of immune checkpoint inhibitors and are rarely severe. We describe a case of toxic epidermal necrolysis related to sintilimab in an elderly oncologic patient. 3 weeks after immunotherapy, the patient developed an extensive rash and diffuse itching, rapidly evolving into macules, blisters, bullae and erosions. Causal evaluation was performed based on the algorithm of drug causality for epidermal necrolysis and national Food and Drug Administration qualitative analysis. The patient responded to high-dose glucocorticosteroid and supportive therapy, alongside with local wound care. If immune checkpoint inhibitors need to be extrapolated clinically, strictly following evidence-based research, promptly detecting and treating adverse reactions is crucial.
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Affiliation(s)
- Ya-Lei Lye
- Department of Oncology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Bin Shan
- Department of Pharmacy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Chen-Hong Jia
- Department of Pharmacy, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China
| | - Jiang Liu
- Department of Pharmacy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Juan Hou
- Department of Pharmacy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Wen-Li Du
- Department of Pharmacy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Rui Feng
- Department of Pharmacy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Ping Liang
- Department of Pharmacy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
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50
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Clasen SC, Fung C, Sesso HD, Travis LB. Cardiovascular Risks in Testicular Cancer: Assessment, Prevention, and Treatment. Curr Oncol Rep 2023; 25:445-454. [PMID: 36867377 DOI: 10.1007/s11912-023-01375-8] [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] [Accepted: 12/23/2022] [Indexed: 03/04/2023]
Abstract
PURPOSE OF REVIEW Testicular cancer (TC) is the leading cancer in men between 18 and 39 years of age. Current treatment involves tumor resection followed by surveillance and/or one or more lines of cisplatin-based chemotherapy (CBCT) and/or bone marrow transplant (BMT). Ten years after treatment, CBCT has been associated with significant atherosclerotic cardiovascular disease (CVD) including myocardial infarction (MI), stroke, and heightened rates of hypertension, dyslipidemia, diabetes mellitus, and metabolic syndrome (MetS). Additionally, low testosterone levels and hypogonadism contribute to MetS and may further drive CVD. RECENT FINDINGS CVD in TCS has been associated with worse physical functioning accompanied by role limitations, decreased energy, and decreased overall health. Exercise may play a role in ameliorating these effects. Systematic CVD screening practices are needed at TC diagnosis and in survivorship. We encourage a multidisciplinary partnership between primary care physicians, cardiologists, cardio-oncologists, medical oncologists, and survivorship providers to address these needs.
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Affiliation(s)
- Suparna C Clasen
- Division of Cardiovascular Medicine, Department of Medicine, Indiana University School of Medicine, Indiana University, 1800 N. Capitol Ave., E308, Indianapolis, IN, 46202, USA.
| | - Chunkit Fung
- Division of Hematology and Oncology, Department of Medicine, University of Rochester School of Medicine and Dentistry, James P. Wilmot Cancer Institute, Rochester, NY, USA
| | - Howard D Sesso
- Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Lois B Travis
- Division of Hematology-Oncology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Epidemiology, Fairbanks School of Public Health, Indianapolis, IN, USA
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