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Lee LCC, Lo KKW. Shining New Light on Biological Systems: Luminescent Transition Metal Complexes for Bioimaging and Biosensing Applications. Chem Rev 2024; 124:8825-9014. [PMID: 39052606 DOI: 10.1021/acs.chemrev.3c00629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Luminescence imaging is a powerful and versatile technique for investigating cell physiology and pathology in living systems, making significant contributions to life science research and clinical diagnosis. In recent years, luminescent transition metal complexes have gained significant attention for diagnostic and therapeutic applications due to their unique photophysical and photochemical properties. In this Review, we provide a comprehensive overview of the recent development of luminescent transition metal complexes for bioimaging and biosensing applications, with a focus on transition metal centers with a d6, d8, and d10 electronic configuration. We elucidate the structure-property relationships of luminescent transition metal complexes, exploring how their structural characteristics can be manipulated to control their biological behavior such as cellular uptake, localization, biocompatibility, pharmacokinetics, and biodistribution. Furthermore, we introduce the various design strategies that leverage the interesting photophysical properties of luminescent transition metal complexes for a wide variety of biological applications, including autofluorescence-free imaging, multimodal imaging, organelle imaging, biological sensing, microenvironment monitoring, bioorthogonal labeling, bacterial imaging, and cell viability assessment. Finally, we provide insights into the challenges and perspectives of luminescent transition metal complexes for bioimaging and biosensing applications, as well as their use in disease diagnosis and treatment evaluation.
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Affiliation(s)
- Lawrence Cho-Cheung Lee
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
- Laboratory for Synthetic Chemistry and Chemical Biology Limited, Units 1503-1511, 15/F, Building 17W, Hong Kong Science Park, New Territories, Hong Kong, P. R. China
| | - Kenneth Kam-Wing Lo
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
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2
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Danil de Namor AF, Al Hakawati N, Farhat SY. Targeting Colorectal Cancer Cells with a Functionalised Calix[4]arene Receptor: Biophysical Studies. Molecules 2022; 27:510. [PMID: 35056825 PMCID: PMC8779440 DOI: 10.3390/molecules27020510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/23/2021] [Accepted: 01/10/2022] [Indexed: 01/06/2023] Open
Abstract
Colorectal cancer (CRC) is a disease which is causing a high degree of mortality around the world. The present study reports the antiproliferative impact of the thioacetamide calix[4]arene, CAII receptor on a highly differentiated Caco-2 cell line. This statement is corroborated by the MTT assay results which revealed a reduction in the cell viability with an IC50 value of 19.02 ± 0.04 µM. Microscopic results indicated that at the starting amount of 10 µM of CAII, a decrease in cells confluency can already be observed in addition to changes in cells morphology. Cell metabolic pathway changes were also investigated. 1H NMR findings showed downregulation in lactate, pyruvate, phosphocholine, lipids, and hydroxybutyrate with the upregulation of succinate, indicating a decline in the cells proliferation. Some biochemical alterations in the cells as a result of the CAII treatment were found by Raman spectroscopy.
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Affiliation(s)
- Angela F Danil de Namor
- Laboratory of Thermochemistry, Department of Chemistry, University of Surrey, Guildford GU2 7XH, Surrey, UK
| | - Nawal Al Hakawati
- Department of Biological Sciences, Faculty of Science, Beirut Arab University, Tripoli 1107-2809, Lebanon;
| | - Sami Y Farhat
- Dr. Suliman Habib Hospital, Dubai P.O. Box 500001, SZR, United Arab Emirates;
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3
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Sun Y, Sun X, You C, Ma S, Luo Y, Peng S, Tang F, Tian X, Wang F, Huang Z, Yu H, Xiao Y, Wang X, Zhang J, Gong Y, Xie C. MUC3A promotes non-small cell lung cancer progression via activating the NFκB pathway and attenuates radiosensitivity. Int J Biol Sci 2021; 17:2523-2536. [PMID: 34326691 PMCID: PMC8315024 DOI: 10.7150/ijbs.59430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/20/2021] [Indexed: 11/20/2022] Open
Abstract
Mucin 3A (MUC3A) is highly expressed in non-small cell lung cancer (NSCLC), but its functions and effects on clinical outcomes are not well understood. Tissue microarray of 92 NSCLC samples indicated that high levels of MUC3A were associated with poor prognosis, advanced staging, and low differentiation. MUC3A knockdown significantly suppressed NSCLC cell proliferation and induced G1/S accumulation via downregulating cell cycle checkpoints. MUC3A knockdown also inhibited tumor growth in vivo and had synergistic effects with radiation. MUC3A knockdown increased radiation-induced DNA double strain breaks and γ-H2AX phosphorylation in NSCLC cells. MUC3A downregulation inhibited the BRCA-1/RAD51 pathway and nucleus translocation of P53 and XCRR6, suggesting that MUC3A promoted DNA damage repair and attenuated radiation sensitivity. MUC3A knockdown also resulted in less nucleus translocation of RELA and P53 in vivo. Immunoprecipitation revealed that MUC3A interacted with RELA and activated the NFκB pathway via promoting RELA phosphorylation and interfering the binding of RELA to IκB. Our studies indicated that MUC3A was a potential oncogene and associated with unfavorable clinical outcomes. NSCLC patients with a high MUC3A level, who should be more frequent follow-up and might benefit less from radiotherapy.
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Affiliation(s)
- Yingming Sun
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Radiation and Medical Oncology, Affiliated Sanming First Hospital of Fujian Medical University, Sanming, China
| | - Xiaoge Sun
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Radiation Oncology, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Chengcheng You
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Pathology, China Three Gorges University Medical College, Yichang, China
| | - Shijing Ma
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yuan Luo
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Shan Peng
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Fang Tang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiaoli Tian
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Feng Wang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zhengrong Huang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hongnv Yu
- Central Laboratory of Xinhua Hospital of Dalian University, Department of Medical Oncology, Xinhua Hospital of Dalian University, Dalian, China
| | - Yu Xiao
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Tumor Precision Diagnosis and Treatment Technology and Translational Medicine, Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiaoyong Wang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Tumor Biological Behaviors, Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Junhong Zhang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Tumor Biological Behaviors, Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yan Gong
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Tumor Precision Diagnosis and Treatment Technology and Translational Medicine, Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Conghua Xie
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Tumor Biological Behaviors, Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, China
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4
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Churusova SG, Aleksanyan DV, Rybalkina EY, Susova OY, Peregudov AS, Brunova VV, Gutsul EI, Klemenkova ZS, Nelyubina YV, Glushko VN, Kozlov VA. Palladium(II) Pincer Complexes of Functionalized Amides with S-Modified Cysteine and Homocysteine Residues: Cytotoxic Activity and Different Aspects of Their Biological Effect on Living Cells. Inorg Chem 2021; 60:9880-9898. [PMID: 34130457 DOI: 10.1021/acs.inorgchem.1c01138] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the search for potential new metal-based antitumor agents, two series of nonclassical palladium(II) pincer complexes based on functionalized amides with S-modified cysteine and homocysteine residues have been prepared and fully characterized by 1D and 2D NMR (1H, 13C, COSY, HMQC or HSQC, 1H-13C, and 1H-15N HMBC) and IR spectroscopy and, in some cases, X-ray diffraction. Most of the resulting complexes exhibit a high level of cytotoxic activity against several human cancer cell lines, including colon (HCT116), breast (MCF7), and prostate (PC3) cancers. Some of the compounds under consideration are also efficient in both native and doxorubicin-resistant transformed breast cells HBL100, suggesting the prospects for the creation of therapeutic agents based on the related compounds that would be able to overcome drug resistance. An analysis of different aspects of their biological effects on living cells has revealed a remarkable ability of the S-modified derivatives to induce cell apoptosis and efficient cellular uptake of their fluorescein-conjugated counterpart, confirming the high anticancer potential of Pd(II) pincer complexes derived from functionalized amides with S-donor amino acid pendant arms.
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Affiliation(s)
- Svetlana G Churusova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow 119991, Russia
| | - Diana V Aleksanyan
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow 119991, Russia
| | - Ekaterina Yu Rybalkina
- Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, Kashirskoe sh. 23, Moscow 115478, Russia
| | - Olga Yu Susova
- Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, Kashirskoe sh. 23, Moscow 115478, Russia
| | - Alexander S Peregudov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow 119991, Russia
| | - Valentina V Brunova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow 119991, Russia
| | - Evgenii I Gutsul
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow 119991, Russia
| | - Zinaida S Klemenkova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow 119991, Russia
| | - Yulia V Nelyubina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow 119991, Russia
| | - Valentina N Glushko
- Institute of Chemical Reagents and High Purity Chemical Substances of the National Research Centre "Kurchatov Institute", Bogorodskii val 3, Moscow 107076, Russia
| | - Vladimir A Kozlov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow 119991, Russia
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Ortega E, Pérez-Arnaiz C, Rodríguez V, Janiak C, Busto N, García B, Ruiz J. A 2-(benzothiazol-2-yl)-phenolato platinum(II) complex as potential photosensitizer for combating bacterial infections in lung cancer chemotherapy†. Eur J Med Chem 2021; 222:113600. [PMID: 34144355 DOI: 10.1016/j.ejmech.2021.113600] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/04/2021] [Accepted: 05/30/2021] [Indexed: 02/07/2023]
Abstract
Cancer and antibiotic resistance are two global health threats that usually hamper clinical chemotherapeutic efficacy. Particularly for lung cancer, bacterial infections frequently arise thereby complicating the course of cancer treatment. In this sense, three new neutral luminescent cycloplatinated(II) photosensitizers of the type [Pt(dmba)(L)] (dmba = N,N-dimethylbenzylamine-κN,κC; L = 2-(benzo[d]oxazol-2-yl)-phenolato-κN,κO1, 2-(benzo[d]thiazol-2-yl)-phenolato-κN,κO2, and 2-(1-methyl-1H-benzo[d]imidazole-2-yl)phenolato-κN,κO3) have been characterized and developed to potentially eliminate both resistant bacteria and lung cancer cells. The phototherapeutic effects of complex 2 have been evaluated using low doses of blue light irradiation. Complex 2 exerted promising photoactivity against pathogenic Gram-positive bacteria strains of clinical interest, displaying a phototoxic index (PI) of 15 for methicillin-resistant Staphylococcus aureus, one of the major microorganisms predominating lung infections. Likewise, the anticancer activity of 2 was also increased upon light irradiation in human lung A549 cancer cells (PI = 36). Further in vitro experiments with this platinum(II) complex suggest that ROS-generating photodynamic reactions were involved upon light irradiation, thus providing a reasonable mechanism for its dual anticancer and antibacterial activities.
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Affiliation(s)
- Enrique Ortega
- Departamento de Química Inorgánica, Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071, Murcia, Spain
| | - Cristina Pérez-Arnaiz
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos S/n, E-09001, Burgos, Spain
| | - Venancio Rodríguez
- Departamento de Química Inorgánica, Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071, Murcia, Spain
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr 1, 40225, Düsseldorf, Germany.
| | - Natalia Busto
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos S/n, E-09001, Burgos, Spain.
| | - Begoña García
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos S/n, E-09001, Burgos, Spain.
| | - José Ruiz
- Departamento de Química Inorgánica, Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071, Murcia, Spain.
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6
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Wu S, Wu Z, Ge Q, Zheng X, Yang Z. Antitumor activity of tridentate pincer and related metal complexes. Org Biomol Chem 2021; 19:5254-5273. [PMID: 34059868 DOI: 10.1039/d1ob00577d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Pincer complexes featuring tunable tridentate ligand frameworks are one of the most actively studied classes of metal-based complexes. Currently, growing attention is devoted to the cytotoxicity of pincer and related metal complexes. The antiproliferative activity of numerous pincer complexes has been reported. Pincer tridentate ligand scaffolds show different coordination modes and offer multiple options for directed structural modifications. This review summarizes the significant progress in the research studies of the antitumor activity of pincer and related platinum(ii), gold(iii), palladium(ii), copper(ii), iron(iii), ruthenium(ii), nickel(ii) and some other metal complexes, in order to provide a reference for designing novel metal coordination drug candidates with promising antitumor activity.
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Affiliation(s)
- Shulei Wu
- Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, Affiliated Nanhua Hospital, University of South China, 28 Western Changsheng Road, Hengyang 421001, Hunan, PR China.
| | - Zaoduan Wu
- Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, Affiliated Nanhua Hospital, University of South China, 28 Western Changsheng Road, Hengyang 421001, Hunan, PR China.
| | - Qianyi Ge
- Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, Affiliated Nanhua Hospital, University of South China, 28 Western Changsheng Road, Hengyang 421001, Hunan, PR China.
| | - Xing Zheng
- Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, Affiliated Nanhua Hospital, University of South China, 28 Western Changsheng Road, Hengyang 421001, Hunan, PR China.
| | - Zehua Yang
- Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, Affiliated Nanhua Hospital, University of South China, 28 Western Changsheng Road, Hengyang 421001, Hunan, PR China.
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7
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Zhang Q, Wang S, Zhu Y, Zhang C, Cao H, Ma W, Tian X, Wu J, Zhou H, Tian Y. Functional Platinum(II) Complexes with Four-Photon Absorption Activity, Lysosome Specificity, and Precise Cancer Therapy. Inorg Chem 2021; 60:2362-2371. [PMID: 33494602 DOI: 10.1021/acs.inorgchem.0c03245] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Multiphoton materials are in special demand in the field of photodynamic therapy and multiphoton fluorescence imaging. However, rational design methodology for these brands of materials is still nascent. This is despite transition-metal complexes favoring optimized nonlinear-optical (NLO) activity and heavy-atom-effected phosphorescent emission. Here, three four-photon absorption (4PA) platinum(II) complexes (Pt1-Pt3) are achieved by the incorporation of varied functionalized C^N^C ligands with high yields. Pt1-Pt3 exhibit triplet metal-to-ligand charge-transfer transitions at ∼460 nm, which are verified multiple times by transient absorption spectra, time-dependent density functional theory calculations, and low-temperature emission spectra. Further, Pt1-Pt3 undergo 4PA. Notably, one of the complexes, Pt2, has maximum 4PA cross-sectional values of up to 15.2 × 10-82 cm8 s3 photon-3 under excitation of a 1600 nm femtosecond laser (near-IR II window). The 4PA cross sections vary when Pt2 is binding to lecithin and when it displays its lysosome-specific targeting behavior. On the basis of the excellent 4PA property of Pt2, we believe that those 4PA platinum(II) complexes have great potential applications in cancer theranostics.
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Affiliation(s)
- Qiong Zhang
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Shujing Wang
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Yingzhong Zhu
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Chengkai Zhang
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Hongzhi Cao
- School of Life Science, Anhui University, Hefei 230601, P. R. China
| | - Wen Ma
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Xiaohe Tian
- School of Life Science, Anhui University, Hefei 230601, P. R. China
| | - Jieying Wu
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Hongping Zhou
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Yupeng Tian
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
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8
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Howell RW. Advancements in the use of Auger electrons in science and medicine during the period 2015-2019. Int J Radiat Biol 2020; 99:2-27. [PMID: 33021416 PMCID: PMC8062591 DOI: 10.1080/09553002.2020.1831706] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/01/2020] [Accepted: 09/28/2020] [Indexed: 02/06/2023]
Abstract
Auger electrons can be highly radiotoxic when they are used to irradiate specific molecular sites. This has spurred basic science investigations of their radiobiological effects and clinical investigations of their potential for therapy. Focused symposia on the biophysical aspects of Auger processes have been held quadrennially. This 9th International Symposium on Physical, Molecular, Cellular, and Medical Aspects of Auger Processes at Oxford University brought together scientists from many different fields to review past findings, discuss the latest studies, and plot the future work to be done. This review article examines the research in this field that was published during the years 2015-2019 which corresponds to the period since the last meeting in Japan. In addition, this article points to future work yet to be done. There have been a plethora of advancements in our understanding of Auger processes. These advancements range from basic atomic and molecular physics to new ways to implement Auger electron emitters in radiopharmaceutical therapy. The highly localized doses of radiation that are deposited within a 10 nm of the decay site make them precision tools for discovery across the physical, chemical, biological, and medical sciences.
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Affiliation(s)
- Roger W Howell
- Division of Radiation Research, Department of Radiology, New Jersey Medical School, Rutgers University, Newark, NJ, USA
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9
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Tian X, De Pace C, Ruiz-Perez L, Chen B, Su R, Zhang M, Zhang R, Zhang Q, Wang Q, Zhou H, Wu J, Zhang Z, Tian Y, Battaglia G. A Cyclometalated Iridium (III) Complex as a Microtubule Probe for Correlative Super-Resolution Fluorescence and Electron Microscopy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2003901. [PMID: 32815192 DOI: 10.1002/adma.202003901] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/12/2020] [Indexed: 06/11/2023]
Abstract
The visualization of microtubules by combining optical and electron microscopy techniques provides valuable information to understand correlated intracellular activities. However, the lack of appropriate probes to bridge both microscopic resolutions restricts the areas and structures that can be comprehended within such highly assembled structures. Here, a versatile cyclometalated iridium (III) complex is designed that achieves synchronous fluorescence-electron microscopy correlation. The selective insertion of the probe into a microtubule triggers remarkable fluorescence enhancement and promising electron contrast. The long-life, highly photostable probe allows live-cell super-resolution imaging of tubulin localization and motion with a resolution of ≈30 nm. Furthermore, correlative light-electron microscopy and energy-filtered transmission electron microscopy reveal the well-associated optical and electron signal at a high specificity, with an interspace of ≈41 Å of microtubule monomer in cells.
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Affiliation(s)
- Xiaohe Tian
- School of Life Science, Anhui University, Hefei, 230000, P. R. China
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230000, P. R. China
- Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Cesare De Pace
- Department of Chemistry, University College London, London, WC1H 0AJ, UK
- Institute for the Physics of Living Systems, University College London, London, WC1E 6BT, UK
- EPSRC/JEOL Centre for Liquid Phase Electron Microscopy, University College London, London, WC1H 0AJ, UK
| | - Lorena Ruiz-Perez
- Department of Chemistry, University College London, London, WC1H 0AJ, UK
- Institute for the Physics of Living Systems, University College London, London, WC1E 6BT, UK
- EPSRC/JEOL Centre for Liquid Phase Electron Microscopy, University College London, London, WC1H 0AJ, UK
| | - Bo Chen
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Rina Su
- School of Life Science, Anhui University, Hefei, 230000, P. R. China
| | - Mingzhu Zhang
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
| | - Ruilong Zhang
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
| | - Qiong Zhang
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
| | - Qin Wang
- Biotechnology Centre, Anhui Agriculture University, Hefei, 230036, China
| | - Hongping Zhou
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
| | - Jieying Wu
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
| | - Zhongping Zhang
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230000, P. R. China
- CAS Center for Excellence in Nanoscience, Institute of Intelligent Machines, Chinese Academy of Science, Hefei, 230031, China
| | - Yupeng Tian
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
| | - Giuseppe Battaglia
- Department of Chemistry, Anhui University, Hefei, 230000, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230000, P. R. China
- Institute for the Physics of Living Systems, University College London, London, WC1E 6BT, UK
- EPSRC/JEOL Centre for Liquid Phase Electron Microscopy, University College London, London, WC1H 0AJ, UK
- Institute for Bioengineering of Catalonia, The Barcelona Institute for Science and Technology (BIST), Barcelona, 08007, Spain
- Catalan Institution for Research and Advanced Studies, Barcelona, 08010, Spain
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10
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Al-Khayal K, Vaali-Mohammed MA, Elwatidy M, Bin Traiki T, Al-Obeed O, Azam M, Khan Z, Abdulla M, Ahmad R. A novel coordination complex of platinum (PT) induces cell death in colorectal cancer by altering redox balance and modulating MAPK pathway. BMC Cancer 2020; 20:685. [PMID: 32703189 PMCID: PMC7376665 DOI: 10.1186/s12885-020-07165-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/10/2020] [Indexed: 12/22/2022] Open
Abstract
Background Colorectal cancer (CRC) is a heterogeneous tumor having various genetic alterations. The current treatment options had limited impact on disease free survival due to therapeutic resistance. Novel anticancer agents are needed to treat CRC specifically metastatic colorectal cancer. A novel coordination complex of platinum, (salicylaldiminato)Pt(II) complex with dimethylpropylene linkage (PT) exhibited potential anti-cancer activity. In this study, we explored the molecular mechanism of PT-induced cell death in colorectal cancer. Methods Colony formation was evaluated using the clonogenic assay. Apoptosis, cell cycle analysis, reactive oxygen species, mitochondrial membrane potential and caspase-3/− 7 were assessed by flow cytometry. Glutathione level was detected by colorimetric assay. PT-induced alteration in pro-apoptotic/ anti-apoptotic proteins and other signaling pathways were investigated using western blotting. P38 downregulation was performed using siRNA. Results In the present study, we explored the molecular mechanism of PT-mediated inhibition of cell proliferation in colorectal cancer cells. PT significantly inhibited the colony formation in human colorectal cancer cell lines (HT-29, SW480 and SW620) by inducing apoptosis and necrosis. This platinum complex was shown to significantly increase the reactive oxygen species (ROS) generation, depletion of glutathione and reduced mitochondrial membrane potential in colorectal cancer cells. Exposure to PT resulted in the downregulation of anti-apoptotic proteins (Bcl2, BclxL, XIAP) and alteration in Cyclins expression. Furthermore, PT increased cytochrome c release into cytosol and enhanced PARP cleavage leading to activation of intrinsic apoptotic pathway. Moreover, pre-treatment with ROS scavenger N-acetylcysteine (NAC) attenuated apoptosis suggesting that PT-induced apoptosis was driven by oxidative stress. Additionally, we show that PT-induced apoptosis was mediated by activating p38 MAPK and inhibiting AKT pathways. This was demonstrated by using chemical inhibitor and siRNA against p38 kinase which blocked the cytochrome c release and apoptosis in colorectal cancer cells. Conclusion Collectively, our data demonstrates that the platinum complex (PT) exerts its anti-proliferative effect on CRC by ROS-mediated apoptosis and activating p38 MAPK pathway. Thus, our findings reveal a novel mechanism of action for PT on colorectal cancer cells and may have therapeutic implication.
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Affiliation(s)
- Khayal Al-Khayal
- Colorectal Research Chair, Department of Surgery, King Saud University College of Medicine, PO Box 7805 (37), Riyadh, 11472, Saudi Arabia
| | - Mansoor-Ali Vaali-Mohammed
- Colorectal Research Chair, Department of Surgery, King Saud University College of Medicine, PO Box 7805 (37), Riyadh, 11472, Saudi Arabia
| | - Mohammed Elwatidy
- College of Medicine Research Center, King Saud University College of Medicine, Riyadh, 11472, Saudi Arabia
| | - Thamer Bin Traiki
- Colorectal Research Chair, Department of Surgery, King Saud University College of Medicine, PO Box 7805 (37), Riyadh, 11472, Saudi Arabia
| | - Omar Al-Obeed
- Colorectal Research Chair, Department of Surgery, King Saud University College of Medicine, PO Box 7805 (37), Riyadh, 11472, Saudi Arabia
| | - Mohammad Azam
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Zahid Khan
- Genome Research Chair, Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Maha Abdulla
- Colorectal Research Chair, Department of Surgery, King Saud University College of Medicine, PO Box 7805 (37), Riyadh, 11472, Saudi Arabia
| | - Rehan Ahmad
- Colorectal Research Chair, Department of Surgery, King Saud University College of Medicine, PO Box 7805 (37), Riyadh, 11472, Saudi Arabia.
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Garbe S, Krause M, Klimpel A, Neundorf I, Lippmann P, Ott I, Brünink D, Strassert CA, Doltsinis NL, Klein A. Cyclometalated Pt Complexes of CNC Pincer Ligands: Luminescence and Cytotoxic Evaluation. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00015] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Simon Garbe
- Universität zu Köln, Department für Chemie, Institut für Anorganische Chemie, Greinstraße 6, D-50939 Köln, Germany
| | - Maren Krause
- Universität zu Köln, Department für Chemie, Institut für Anorganische Chemie, Greinstraße 6, D-50939 Köln, Germany
| | - Annika Klimpel
- Universität zu Köln, Department für Chemie, Institut für Biochemie, Zülpicher Strasse 47a, D-50674 Köln, Germany
| | - Ines Neundorf
- Universität zu Köln, Department für Chemie, Institut für Biochemie, Zülpicher Strasse 47a, D-50674 Köln, Germany
| | - Petra Lippmann
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstraβe 55, D-38106 Braunschweig, Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstraβe 55, D-38106 Braunschweig, Germany
| | - Dana Brünink
- Westfälische Wilhelms-Universität Münster, Institut für Festkörpertheorie and Center for Multiscale Theory and Computation, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Cristian A. Strassert
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, CiMIC, CeNTech, Heisenbergstraße 11, D-48149 Münster, Germany
| | - Nikos L. Doltsinis
- Westfälische Wilhelms-Universität Münster, Institut für Festkörpertheorie and Center for Multiscale Theory and Computation, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Axel Klein
- Universität zu Köln, Department für Chemie, Institut für Anorganische Chemie, Greinstraße 6, D-50939 Köln, Germany
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12
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You H, Baluszek S, Kaminska B. Supportive roles of brain macrophages in CNS metastases and assessment of new approaches targeting their functions. Am J Cancer Res 2020; 10:2949-2964. [PMID: 32194848 PMCID: PMC7053204 DOI: 10.7150/thno.40783] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/22/2020] [Indexed: 12/17/2022] Open
Abstract
Metastases to the central nervous system (CNS) occur frequently in adults and their frequency increases with the prolonged survival of cancer patients. Patients with CNS metastases have short survival, and modern therapeutics, while effective for extra-cranial cancers, do not reduce metastatic burden. Tumor cells attract and reprogram stromal cells, including tumor-associated macrophages that support cancer growth by promoting tissue remodeling, invasion, immunosuppression and metastasis. Specific roles of brain resident and infiltrating macrophages in creating a pre-metastatic niche for CNS invading cancer cells are less known. There are populations of CNS resident innate immune cells such as: parenchymal microglia and non-parenchymal, CNS border-associated macrophages that colonize CNS in early development and sustain its homeostasis. In this study we summarize available data on potential roles of different brain macrophages in most common brain metastases. We hypothesize that metastatic cancer cells exploit CNS macrophages and their cytoprotective mechanisms to create a pre-metastatic niche and facilitate metastatic growth. We assess current pharmacological strategies to manipulate functions of brain macrophages and hypothesize on their potential use in a therapy of CNS metastases. We conclude that the current data strongly support a notion that microglia, as well as non-parenchymal macrophages and peripheral infiltrating macrophages, are involved in multiple stages of CNS metastases. Understanding their contribution will lead to development of new therapeutic strategies.
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13
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Sun J, Liu Z, Yan C, Sun X, Xie Z, Zhang G, Shao X, Zhang D, Zhou S. Efficient Construction of Near-Infrared Absorption Donor-Acceptor Copolymers with and without Pt(II)-Incorporation toward Broadband Nonlinear Optical Materials. ACS APPLIED MATERIALS & INTERFACES 2020; 12:2944-2951. [PMID: 31842544 DOI: 10.1021/acsami.9b17784] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Organic nonlinear optical (NLO) materials have attracted immense scientific interest in various fields. Broadband NLO response extending to near-infrared (NIR) region is extremely important and remains challenging. Herein, two diketopyrrolopyrrole (DPP)-based donor-acceptor (D-A)-type π-conjugated copolymers with and without Pt(II) incorporation are rationally designed and synthesized toward broadband NLO response materials. The broad intramolecular charge transfer (ICT) absorption reaching 1000 nm due to the strong D-A interaction is well demonstrated by photophysical characterizations. The NLO properties of copolymers are studied using Z-scan technology. Owing to their extended π-conjugated D-A systems and near-infrared ICT absorption properties, both copolymers exhibit laser-induced NLO response to nanosecond as well as picosecond laser pulses upon the wavelengths of 532 and 1064 nm. Interestingly, introducing Pt(II) into the copolymer backbone can evidently improve the NLO property or unexpectedly switch the NLO response from saturable absorption to reverse saturable absorption. Meanwhile, both copolymers are successfully employed as optical limiting materials and exhibit broadband optical limiting abilities. Therefore, we present an efficient strategy toward broadband NLO materials, which may significantly facilitate the understanding of organic molecular structure-property relationship and promote their practical application.
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Affiliation(s)
- Jibin Sun
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Zitong Liu
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Chaoxian Yan
- State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P. R. China
| | - Xingming Sun
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Zheng Xie
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Guanxin Zhang
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Xiangfeng Shao
- State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P. R. China
| | - Deqing Zhang
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Shuyun Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
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14
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Li M, Mao L, Chen M, Li M, Wang K, Mo J. Characterization of an Amphiphilic Phosphonated Calixarene Carrier Loaded With Carboplatin and Paclitaxel: A Preliminary Study to Treat Colon Cancer in vitro and in vivo. Front Bioeng Biotechnol 2019; 7:238. [PMID: 31632958 PMCID: PMC6779836 DOI: 10.3389/fbioe.2019.00238] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/11/2019] [Indexed: 12/20/2022] Open
Abstract
The inadequacy of available detection methods and a naturally aggressive progression have made colon cancer the third most common type of cancer, accounting for ~10% of all cancer cases. The heterogeneity and genomic instability of colon cancer tumors make current treatments unsatisfactory. This study evaluated a novel nanoscale delivery platform comprising phosphonated calixarenes (P4C6) co-loaded with paclitaxel (PTX) and carboplatin (CPT). The nanoparticles showed average hydrodynamic sizes of 84 ± 8 nm for empty P4C6 nanoparticle and 119 ± 13 nm for PTX-CPT-P4C6. The corresponding zeta potentials were −40.8 ± 8.8 and −35.4 ± 4.2 mV. The optimal CPT:PTX ratio was 5.22:1, and PTX-CPT-P4C6 with this ratio was more cytotoxic against HT-29 cells than against Caco-2 cells (IC50, 0.4 ± 0.02 vs. 2.1 ± 0.3 μM), and it induced higher apoptosis in HT-29 cells (56.6 ± 4.5 vs. 44.9 ± 3.44%). PTX-CPT-P4C6 inhibited the invasion and migration of HT-29 cells more strongly than the free drugs. It also inhibited the growth of HT-29 tumors in mice to the greatest extent of all formulations, with negligible side effects. This research demonstrates the potential of P4C6 to deliver two chemotherapeutic agents to colon cancer tumors to provide synergistic efficacy than single drug administration.
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Affiliation(s)
- Meiying Li
- Clinical Research Center for Neurological Diseases of Guangxi Province, Affiliated Hospital of Guilin Medical University, Guilin, China.,School of Pharmacy, Guilin Medical University, Guilin, China
| | - Liujun Mao
- Department of Further-Education, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Meirong Chen
- Department of Graduate, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Mingxin Li
- School of Pharmacy, Guilin Medical University, Guilin, China
| | - Kaixuan Wang
- School of Pharmacy, Guilin Medical University, Guilin, China
| | - Jingxin Mo
- Clinical Research Center for Neurological Diseases of Guangxi Province, Affiliated Hospital of Guilin Medical University, Guilin, China
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