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Zhang R, Liu JW, Zhong WY, Chen JL, Zhao F, Liu SJ, Wen HR. Mechanochromic and Selective Vapochromic Solid-State Luminescence of a Dinuclear Cuprous Complex. Inorg Chem 2023; 62:11510-11517. [PMID: 37424076 DOI: 10.1021/acs.inorgchem.3c01107] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
The unraveling of the stimuli-responsive mechanism is crucial to the design and precise synthesis of stimuli-responsive luminescent materials. We report herein the mechanochromic and selective vapochromic solid-state luminescence properties of a new bimetallic cuprous complex [{Cu(bpmtzH)}2(μ-dppm)2](ClO4)2 (1), and the corresponding response mechanisms are elucidated by investigating its two different solvated polymorphs 1·2CH2Cl2 (1-g) and 1·2CHCl3 (1-c). Green-emissive 1-g and cyan-emissive 1-c can be interconverted upon alternate exposure to CHCl3 and CH2Cl2 vapors, which is principally attributable to a combined alteration of both intermolecular NHbpmtzH···OClO3- hydrogen bonds and intramolecular "triazolyl/phenyl" π···π interactions induced by different solvents. Solid-state luminescence mechanochromism present in 1-g and 1-c is mainly ascribed to the grinding-induced breakage of the NHbpmtzH···OClO3- hydrogen bonds. It is suggested that intramolecular π···π-triazolyl/phenyl interactions are affected by different solvents but not by grinding. The results provide new insights into the design and precise synthesis of multi-stimuli-responsive luminescent materials by the comprehensive use of intermolecular hydrogen bonds and intramolecular π···π interactions.
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Affiliation(s)
- Rui Zhang
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Jin-Wang Liu
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Wei-Yong Zhong
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Jing-Lin Chen
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Feng Zhao
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China
| | - Sui-Jun Liu
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - He-Rui Wen
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
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Zhou H, Li F, Niu JY, Zhong WY, Tang MY, Lin D, Cui HH, Huang XH, Chen YY, Wang HY, Tu YS. Ferroptosis was involved in the oleic acid-induced acute lung injury in mice. Sheng Li Xue Bao 2019; 71:689-697. [PMID: 31646322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The aim of the present study was to investigate the role of ferroptosis in acute lung injury (ALI) mouse model induced by oleic acid (OA). ALI was induced in the mice via the lateral tail vein injection of pure OA. The histopathological score of lung, lung wet-dry weight ratio and the protein content of bronchoalveolar lavage fluid (BALF) were used as the evaluation indexes of ALI. Iron concentration, glutathione (GSH) and malondialdehyde (MDA) contents in the lung tissues were measured using corresponding assay kits. The ultrastructure of pulmonary cells was observed by transmission electron microscope (TEM), and the expression level of prostaglandin-endoperoxide synthase 2 (PTGS2) mRNA was detected by quantitative polymerase chain reaction (q-PCR). Protein expression levels of glutathione peroxidase 4 (GPX4), ferritin and transferrin receptor 1 (TfR1) in lung tissues were determined by Western blot. The results showed that histopathological scores of lung tissues, lung wet-dry weight ratio and protein in BALF in the OA group were higher than those of the control group. In the OA group, the mitochondria of pulmonary cells were shrunken, and the mitochondrial membrane was ruptured. The expression level of PTGS2 mRNA in the OA group was seven folds over that in the control group. Iron overload, GSH depletion and accumulation of MDA were observed in the OA group. Compared with the control group, the protein expression levels of GPX4 and ferritin in lung tissue were down-regulated in the OA group. These results suggest that ferroptosis plays a potential role in the pathogenesis of ALI in our mouse model, which may provide new insights for development of new drugs for ALI.
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Affiliation(s)
- Hang Zhou
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Feng Li
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Jian-Yi Niu
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Wei-Yong Zhong
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Min-Yu Tang
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Dong Lin
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Hong-Hui Cui
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Xue-Han Huang
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Ying-Ying Chen
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
- The Sixth Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Hong-Yan Wang
- Department of Pathology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Yong-Sheng Tu
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China.
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Bowman L, Grossmann M, Rill D, Brown M, Zhong WY, Alexander B, Leimig T, Coustan-Smith E, Campana D, Jenkins J, Woods D, Kitchingman G, Vanin E, Brenner M. IL-2 adenovector-transduced autologous tumor cells induce antitumor immune responses in patients with neuroblastoma. Blood 1998; 92:1941-9. [PMID: 9731051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
In many different murine models, the immunogenicity of tumor cells can be increased by transduction with a range of immunostimulatory genes, inducing an immune response that causes regression of pre-existing unmodified tumor cells. To investigate the relevance of these animal models to pediatric malignancy, we used autologous unirradiated tumor cells transduced with an adenovirus-IL-2 to immunize 10 children with advanced neuroblastoma. In a dose-escalation study, we found that this tumor immunogen induced a moderate local inflammatory response consisting predominantly of CD4(+) T lymphocytes, and a systemic response, with a rise in circulating CD25(+) and DR+ CD3(+) T cells. Patients also made a specific antitumor response, manifest by an IgG antitumor antibody and increased cytotoxic T-cell killing of autologous tumor cells. Clinically, five patients had tumor responses after the tumor immunogen alone (one complete tumor response, one partial response, and three with stable disease). Four of these five patients were shown to have coexisting antitumor cytotoxic activity, as opposed to only one of the patients with nonresponsive disease. These results show a promising correlation between preclinical observations and clinical outcome in this disease, and support further exploration of the approach for malignant diseases of children.
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Affiliation(s)
- L Bowman
- Departments of Hematology-Oncology, Pathology, and Virology, St Jude Children's Research Hospital, Memphis, TN; and the Department of Pediatrics, University of Tennessee, Memphis College of Medicine, Memphis, TN, USA
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Bowman LC, Grossmann M, Rill D, Brown M, Zhong WY, Alexander B, Leimig T, Coustan-Smith E, Campana D, Jenkins J, Woods D, Brenner M. Interleukin-2 gene-modified allogeneic tumor cells for treatment of relapsed neuroblastoma. Hum Gene Ther 1998; 9:1303-11. [PMID: 9650615 DOI: 10.1089/hum.1998.9.9-1303] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Tumor cells that have been genetically modified to express immunostimulatory genes will induce effective antitumor responses in a range of syngeneic animal models. For human applications, transduced autologous tumor cell lines are often difficult or impossible to prepare, so that there are strong incentives for substituting a standardized allogeneic tumor cell line. However, such lines may be inferior immunogens if they differ from host tumors in the antigens they express. We have evaluated the safety, immunostimulatory, and antitumor activity of an interleukin-2-secreting allogeneic neuroblastoma cell line in 12 children with relapsed stage IV neuroblastoma. They received two to four subcutaneous injections of cells in a dose-escalating schedule, up to a maximum of 10(8) cells per injection. There was induration and pruritus at the injection site, and skin biopsies revealed mild panniculitis with CD3+ cells surrounding scanty residual tumor cells. There was a limited but significant peripheral monocytosis. No patient showed any increase in direct cytotoxic effector function against the immunizing cell line, but 3 patients had a rise in the frequency of neuroblastoma-reactive cytotoxic T lymphocyte precursor cells. One child had > 90% tumor response (PR), 7 had stable disease, and 4 had progressive disease in response to vaccine alone. Although these results offer some encouragement for the continued pursuit of allogeneic vaccine strategies in human cancer, the antitumor immune responses we observed are inferior to those obtained in an earlier immunization study using autologous neuroblastoma cells. Hence, we suggest that this earlier approach remains preferable, its difficulties notwithstanding.
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Affiliation(s)
- L C Bowman
- Department of Hematology-Oncology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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Abstract
A prospective multimodal neurophysiological study was conducted on 36 patients with end-stage renal failure, 16 of whom subsequently underwent renal transplantation (TR). Nerve conduction study and somatosensory evoked potentials revealed that peripheral conduction deficit, often subclinical, was the commonest abnormality, and TR resulted in substantial improvement. Visual evoked potentials demonstrated subclinical impairment, which did not improve after TR. The brainstem auditory evoked potentials were essentially normal and unaffected by TR.
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Affiliation(s)
- Y L Yu
- Department of Medicine, Queen Mary Hospital, University of Hong Kong
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