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Wan Y, Lin Y, Tan X, Gong L, Lei F, Wang C, Sun X, Du X, Zhang Z, Jiang J, Liu Z, Wang J, Zhou X, Wang S, Zhou X, Jing P, Zhong Z. Injectable Hydrogel To Deliver Bone Mesenchymal Stem Cells Preloaded with Azithromycin To Promote Spinal Cord Repair. ACS Nano 2024; 18:8934-8951. [PMID: 38483284 DOI: 10.1021/acsnano.3c12402] [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] [Indexed: 03/27/2024]
Abstract
Spinal cord injury is a disease that causes severe damage to the central nervous system. Currently, there is no cure for spinal cord injury. Azithromycin is commonly used as an antibiotic, but it can also exert anti-inflammatory effects by down-regulating M1-type macrophage genes and up-regulating M2-type macrophage genes, which may make it effective for treating spinal cord injury. Bone mesenchymal stem cells possess tissue regenerative capabilities that may help promote the repair of the injured spinal cord. In this study, our objective was to explore the potential of promoting repair in the injured spinal cord by delivering bone mesenchymal stem cells that had internalized nanoparticles preloaded with azithromycin. To achieve this objective, we formulated azithromycin into nanoparticles along with a trans-activating transcriptional activator, which should enhance nanoparticle uptake by bone mesenchymal stem cells. These stem cells were then incorporated into an injectable hydrogel. The therapeutic effects of this formulation were analyzed in vitro using a mouse microglial cell line and a human neuroblastoma cell line, as well as in vivo using a rat model of spinal cord injury. The results showed that the formulation exhibited anti-inflammatory and neuroprotective effects in vitro as well as therapeutic effects in vivo. These results highlight the potential of a hydrogel containing bone mesenchymal stem cells preloaded with azithromycin and trans-activating transcriptional activator to mitigate spinal cord injury and promote tissue repair.
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Affiliation(s)
- Yujie Wan
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
- Ultrasound Medicine Department, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Yan Lin
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xie Tan
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Lingyi Gong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Fei Lei
- Department of Spine Surgery, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Changguang Wang
- DataRevive USA, LLC, 30 W Gude Drive, Rockville, Maryland 20850, United States
| | - Xiaoduan Sun
- Department of Pharmacy, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xingjie Du
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhirong Zhang
- West China School of Pharmacy, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jun Jiang
- Department of Thyroid and Vascular Surgery, the Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhongbing Liu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Jingxuan Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xiaoling Zhou
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Shuzao Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xiangyu Zhou
- Department of Thyroid and Vascular Surgery, the Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Pei Jing
- Department of Pharmacy, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhirong Zhong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan 646000, China
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Wang J, Lin Y, Li C, Lei F, Luo H, Jing P, Fu Y, Zhang Z, Wang C, Liu Z, Jiang J, Zhou M, Du X, Liu Z, Zhou X, Sun X, Zhong Z. Zein-Based Triple-Drug Nanoparticles to Promote Anti-Inflammatory Responses for Nerve Regeneration after Spinal Cord Injury. Adv Healthc Mater 2024:e2304261. [PMID: 38482944 DOI: 10.1002/adhm.202304261] [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: 12/01/2023] [Revised: 03/03/2024] [Indexed: 03/22/2024]
Abstract
Defects in autophagy contribute to neurological deficits and motor dysfunction after spinal cord injury. Here a nanosystem is developed to deliver autophagy-promoting, anti-inflammatory drugs to nerve cells in the injured spinal cord. Celastrol, metformin, and everolimus as the mTOR inhibitor are combined into the zein-based nanoparticles, aiming to solubilize the drugs and prolong their circulation. The nanoparticles are internalized by BV2 microglia and SH-SY5Y neuron-like cells in culture; they inhibit the secretion of inflammatory factors by BV2 cells after insult with lipopolysaccharide, and they protect SH-SY5Y cells from the toxicity of H2O2. In a rat model of spinal cord injury, the nanoparticles mitigate inflammation and promote spinal cord repair. In the in vitro and in vivo experiments, the complete nanoparticles function better than the free drugs or nanoparticles containing only one or two drugs. These results suggest that the triple-drug nanoparticles show promise for treating spinal cord injury.
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Affiliation(s)
- Jingxuan Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yan Lin
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Chunhan Li
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Fei Lei
- Department of Spine Surgery, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Hongli Luo
- Department of Pharmacy, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Pei Jing
- Department of Pharmacy, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yao Fu
- West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Zhirong Zhang
- West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, China
| | | | - Zerong Liu
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China
| | - Jun Jiang
- Department of General Surgery (Thyroid Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Meiling Zhou
- Department of Spine Surgery, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xingjie Du
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Zhongbing Liu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xiangyu Zhou
- Department of Thyroid and Vascular Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xiaoduan Sun
- Department of Spine Surgery, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Zhirong Zhong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
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Gao J, Feng P, Zhang J, Dong C, Wang Z, Chen M, Yu Z, Zhao B, Hou X, Wang H, Wu Z, Jemim RS, Yu H, Sun D, Jing P, Chen J, Song W, Zhang X, Zhou Z, Wu J. Enhancing maize's nitrogen-fixing potential through ZmSBT3, a gene suppressing mucilage secretion. J Integr Plant Biol 2023; 65:2645-2659. [PMID: 37929676 DOI: 10.1111/jipb.13581] [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] [Received: 06/04/2023] [Accepted: 11/04/2023] [Indexed: 11/07/2023]
Abstract
Maize (Zea mays) requires substantial amounts of nitrogen, posing a challenge for its cultivation. Recent work discovered that some ancient Mexican maize landraces harbored diazotrophic bacteria in mucilage secreted by their aerial roots. To see if this trait is retained in modern maize, we conducted a field study of aerial root mucilage (ARM) in 258 inbred lines. We observed that ARM secretion is common in modern maize, but the amount significantly varies, and only a few lines have retained the nitrogen-fixing traits found in ancient landraces. The mucilage of the high-ARM inbred line HN5-724 had high nitrogen-fixing enzyme activity and abundant diazotrophic bacteria. Our genome-wide association study identified 17 candidate genes associated with ARM across three environments. Knockouts of one candidate gene, the subtilase family gene ZmSBT3, confirmed that it negatively regulates ARM secretion. Notably, the ZmSBT3 knockout lines had increased biomass and total nitrogen accumulation under nitrogen-free culture conditions. High ARM was associated with three ZmSBT3 haplotypes that were gradually lost during maize domestication, being retained in only a few modern inbred lines such as HN5-724. In summary, our results identify ZmSBT3 as a potential tool for enhancing ARM, and thus nitrogen fixation, in maize.
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Affiliation(s)
- Jingyang Gao
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Peijiang Feng
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Jingli Zhang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Chaopei Dong
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Zhao Wang
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Mingxiang Chen
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Zhongliang Yu
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Bowen Zhao
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xin Hou
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Huijuan Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Zhaokun Wu
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Razia Sultana Jemim
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Haidong Yu
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Doudou Sun
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Pei Jing
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Jiafa Chen
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Weibin Song
- State Key Laboratory of Plant Physiology and Biochemistry, National Maize Improvement Center, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Xuecai Zhang
- International Maize and Wheat Improvement Center (CIMMYT), El Batan, Texcoco, 56237, Mexico
| | - Zijian Zhou
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Jianyu Wu
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450002, China
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
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Bai X, Lin Y, Gong L, Duan J, Sun X, Wang C, Liu Z, Jiang J, Zhou X, Zhou M, Zhang Z, Liu Z, Jing P, Zhong Z. Nanoparticles that target the mitochondria of tumor cells to restore oxygen supply for photodynamic therapy: Design and preclinical validation against breast cancer. J Control Release 2023; 362:356-370. [PMID: 37541592 DOI: 10.1016/j.jconrel.2023.07.064] [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: 06/11/2023] [Revised: 07/18/2023] [Accepted: 07/31/2023] [Indexed: 08/06/2023]
Abstract
Photodynamic therapy, in which photosensitizers locally generate cytotoxic reactive oxygen species, can treat tumor tissue with minimal effects on surrounding normal tissue, but it can be ineffective because of the anoxic tumor microenvironment. Here we developed a strategy to inactivate the mitochondria of tumor cells in order to ensure adequate local oxygen concentrations for photodynamic therapy. We conjugated the photosensitizer 5-aminolevulinic acid to the lipophilic cation triphenylphosphine, which targets mitochondria. Then we packaged the conjugate into nanoparticles that were based on biocompatible bovine serum albumin and coated with folic acid in order to target the abundant folate receptors on the tumor surface. In studies in cell culture and BALB/c mice bearing MCF-7 xenografts, we found that the nanoparticles helped solubilize the cation-photosensitizer conjugate, prolong its circulation, and enhance its photodynamic antitumor effects. We confirmed the ability of the nanoparticles to target tumor cells and their mitochondria using confocal laser microscopy and in vivo assays of pharmacokinetics, pharmacodynamics, and tissue distribution. Our results not only identify a novel nanoparticle system for treating cancer, but they demonstrate the feasibility of enhancing photodynamic therapy by reducing oxygen consumption within tumors.
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Affiliation(s)
- Xiaosheng Bai
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China; Department of Pharmacy, Longquanyi District of Chengdu Maternity and Child Health Care Hospital, Chengdu, Sichuan 610100, China
| | - Yan Lin
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Lingyi Gong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Junfeng Duan
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xiaoduan Sun
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | | | - Zerong Liu
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan 646000, China
| | - Jun Jiang
- Department of General Surgery (Thyroid Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xiangyu Zhou
- Department of Thyroid and Vascular Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Meiling Zhou
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhirong Zhang
- West China School of Pharmacy, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhongbing Liu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Pei Jing
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Zhirong Zhong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China; Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan 646000, China; Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
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Chen Z, Liu Z, Wang S, Cheng C, Sun X, Liu Z, Wei J, Jiang J, Lan H, Zhou M, Jing P, Lin Y, Zhou X, Zhong Z. Long-Circulating Lipid Nanospheres Loaded with Flurbiprofen Axetil for Targeted Rheumatoid Arthritis Treatment. Int J Nanomedicine 2023; 18:5159-5181. [PMID: 37705869 PMCID: PMC10497098 DOI: 10.2147/ijn.s419502] [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: 05/17/2023] [Accepted: 08/09/2023] [Indexed: 09/15/2023] Open
Abstract
Background Flurbiprofen axetil (FA) is a non-steroidal anti-inflammatory drug with good analgesic and anti-inflammatory effects. However, it suffers from poor solubility, short circulation time, and off-target binding profile, which significantly limit its clinical application. Here, we loaded FA into stealth lipid microspheres modified with the arginine-glycine-aspartic acid (RGD) peptide (cRGD-FA-SLM), and examined the therapeutic potential of the resulting platform for the treatment of rheumatoid arthritis (RA). Methods cRGD-FA-SLM was prepared by high pressure homogenization, and its toxicity and uptake by macrophages were examined using cultures of RAW264.7 cells. Hemolysis and hepatotoxicity tests were performed to assess the safety of the developed platform, while its pharmacokinetics, biodistribution, and therapeutic efficacy were investigated in a collagen-induced arthritis rat model. Results cRGD-FA-SLM showed homogeneous spherical morphology and efficient encapsulation of FA. The developed platform was non-toxic to normal macrophages and was selectively internalized by lipopolysaccharide-activated macrophages in vitro, while it distributed mainly to arthritic joints and significantly prolonged FA in circulation in vivo. cRGD-FA-SLM also significantly reduced the expression of prostaglandin E2 and alleviated joint edema and bone erosion, showing prolonged analgesic effects in arthritic rats. Conclusion cRGD-FA-SLM shows good inflammation-targeting ability and prolongs drug circulation in vivo, suggesting promise as an anti-inflammatory and analgesic agent for targeted RA treatment.
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Affiliation(s)
- Zhenyu Chen
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
- The Second People’s Hospital of China Three Gorges University, Yichang, 443000, People’s Republic of China
| | - Zhongbing Liu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Shuzao Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Cai Cheng
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Xiaoduan Sun
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Zerong Liu
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Jun Wei
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Jun Jiang
- Department of General Surgery (Thyroid Surgery), the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
- Metabolic Vascular Diseases Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Huaqi Lan
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Meiling Zhou
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Pei Jing
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Yan Lin
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Xiangyu Zhou
- Department of Thyroid and Vascular Surgery, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Zhirong Zhong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, People’s Republic of China
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
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Luo Z, Lin Y, Zhou X, Yang L, Zhang Z, Liu Z, Zhou M, Jiang J, Wu J, Liu Z, Jing P, Zhong Z. Biomineral-binding liposomes with dual antibacterial effects for preventing and treating dental caries. Biomater Sci 2023; 11:5984-6000. [PMID: 37503566 DOI: 10.1039/d3bm00756a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Dental caries is a chronic oral disease that results from the demineralization of dental hard tissues caused by the long-term interaction of various pathogenic factors in the human oral cavity. Although magnolol (Mag) and fluconazole (FLC) have shown promising antibacterial activity against Candida albicans (C. albicans) and Streptococcus mutans (S. mutans), their clinical application is limited due to hydrophobicity. In this study, we constructed biomineral-binding liposomes co-loaded with Mag and FLC (PPi-Mag/FLC-LPs) to overcome the hydrophobicity and achieve a dual antibacterial activity in the acidic microenvironment of caries. PPi-Mag/FLC-LPs were characterized by laser particle size analysis, transmission electron microscopy, and high-performance liquid chromatography (HPLC). The ability of PPi-Mag/FLC-LPs to bind hydroxyapatite was assessed in vitro using fluorescence microscopy and HPLC, while the antibacterial activity was examined by measuring drug effects on the acidogenicity, acid resistance, biofilm formation and survival of C. albicans and S. mutans. The pharmacodynamics of PPi-Mag/FLC-LPs was also evaluated in vivo in a rat model of dental caries. Mag and FLC were released rapidly from PPi-Mag/FLC-LPs in a pH-sensitive manner, and they bound effectively to hydroxyapatite, leading to a better antibacterial effect on C. albicans and S. mutans compared to free drugs or liposomes loaded with a single drug. PPi-Mag/FLC-LPs improved the medicinal properties of Mag and FLC and provided a rapid, pH-sensitive release of both drugs in vitro. PPi-Mag/FLC-LPs displayed good antibacterial activity in vivo, showing promise as a dual-drug delivery system for the prevention and treatment of caries.
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Affiliation(s)
- Zhongling Luo
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
- The Second People's Hospital of Neijiang, Sichuan 641000, China
| | - Yan Lin
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Xiaoling Zhou
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Lingling Yang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Zijun Zhang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Zerong Liu
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan 646000, China.
| | - Meiling Zhou
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Jun Jiang
- Department of General Surgery (Thyroid Surgery), Metabolic Vascular Diseases Key Laboratory of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Jianming Wu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Zhongbing Liu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Pei Jing
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Zhirong Zhong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan 646000, China.
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
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7
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Jing P, Zhao H, Zhang W, Liu G. Homologous RuO 2-Ru heterostructures for tandem catalytic upgrading of ethanol. Chem Commun (Camb) 2023; 59:6407-6409. [PMID: 37158015 DOI: 10.1039/d3cc01264f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The homologous RuO2-Ru heterostructure was demonstrated as an efficient tandem catalyst for upgrading ethanol. The adjacent RuO2 and Ru separately serve as aldol condensation/dehydration and dehydrogenation/hydrogenation sites for ethanol conversion.
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Affiliation(s)
- Pei Jing
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China.
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun, 130021, China
| | - Haiyang Zhao
- Jilin Yunsheng Technology Co., Ltd, Changchun 130000, China
| | - Wenxiang Zhang
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun, 130021, China
| | - Gang Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China.
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun, 130021, China
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Wang J, Cheng C, Liu Z, Lin Y, Yang L, Zhang Z, Sun X, Zhou M, Jing P, Zhong Z. Inhibition of A1 Astrocytes and Activation of A2 Astrocytes for the Treatment of Spinal Cord Injury. Neurochem Res 2023; 48:767-780. [PMID: 36418652 DOI: 10.1007/s11064-022-03820-9] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/20/2022] [Accepted: 11/09/2022] [Indexed: 11/25/2022]
Abstract
Spinal cord injury (SCI) is a serious injury to the central nervous system that causes significant physical and psychological trauma to the patient. SCI includes primary spinal cord injuries and secondary spinal cord injuries. The secondary injury refers to the pathological process or reaction after the primary injury. Although SCI has always been thought to be an incurable injury, the human nerve has the ability to repair itself after an injury. However, the reparability is limited because glial scar formation impedes functional recovery. There is a type of astrocyte that can differentiate into two forms of reactive astrocytes known as 'A1' and 'A2' astrocytes. A1 astrocytes release cytotoxic chemicals that cause neurons and oligodendrocytes to die and perform a harmful role. A2 astrocytes can produce neurotrophic factors and act as neuroprotectors. This article discusses ways to block A1 astrocytes while stimulating A2 astrocytes to formulate a new treatment for spinal cord injury.
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Affiliation(s)
- Jingxuan Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Cai Cheng
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Zhongbing Liu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Yan Lin
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Lingling Yang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Zijun Zhang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Xiaoduan Sun
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Meiling Zhou
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Pei Jing
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China.
| | - Zhirong Zhong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China.
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, 646000, Sichuan, China.
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9
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Jing P, Luo Y, Chen Y, Tan J, Liao C, Zhang S. Aspirin-Loaded Cross-Linked Lipoic Acid Nanodrug Prevents Postoperative Tumor Recurrence by Residual Cancer Cell Killing and Inflammatory Microenvironment Improvement. Bioconjug Chem 2023; 34:366-376. [PMID: 36626242 DOI: 10.1021/acs.bioconjchem.2c00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In addition to residual cancer cells, the surgery resection-induced hyperinflammatory microenvironment is a key factor that leads to postsurgical cancer recurrence. Herein, we developed a dual-functional nanodrug Asp@cLANVs for postsurgical recurrence inhibition by loading the classical anti-inflammatory drug aspirin (Asp) into cross-linked lipoic acid nanovesicles (cLANVs). The Asp@cLANVs can not only kill residual cancer cells at the doses comparable to common cytotoxic drugs by synergistic interaction between Asp and cLANVs, but also improve the postsurgical inflammatory microenvironment by their strongly synergistic anti-inflammation activity between Asp and cLANVs. Using mice bearing partially removed NCI-H460 tumors, we found that Asp@cLANVs gave a much lower recurrence rate (33.3%) compared with the first-line cytotoxic drug cisplatin (100%), and no mice died for at least 60 days after Asp@cLANV treatment while no mouse survived beyond day 43 in the cisplatin group. This dual-functional nanodrug constructs the first example that combines residual cancer cell killing and postoperative inflammation microenvironment improvement to suppress postsurgical cancer recurrence.
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Affiliation(s)
- Pei Jing
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China.,Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province 646000, P.R. China
| | - Yuling Luo
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province 646000, P.R. China
| | - Yun Chen
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P.R. China
| | - Jiangbing Tan
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Chunyan Liao
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Shiyong Zhang
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
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10
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Jing P, Luo Y, Wang L, Tan J, Chen Y, Chen Y, Zhang S. An oligomeric hyaluronic acid-GX1 molecular target drug with polyvalent targeting to CD44 and VEGF receptors. Biomater Adv 2023; 144:213217. [PMID: 36502748 DOI: 10.1016/j.bioadv.2022.213217] [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: 06/03/2022] [Revised: 11/14/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
The off-target toxicity of molecular targeted drug hinders its clinical transformation. Herein, we report a new molecular targeted drug oHA-GX1 constructed by oligomeric hyaluronan (oHA) and peptide GX1 (CGNSNPKSC). The oHA-GX1 can not only suppress the tumor growth by interacting with overexpressed VEGF and CD44 receptors inside tumor tissues, but also reduce the likelihood of off-target toxicity due to the multiple VEGF and CD44 receptors binding sites. The cytotoxicity study shows that the IC50oHA-GX1 against co-SGC-7901 and co-HUVEC cells fell in the range of common cytotoxic drugs. The animal experiment results reveal that the tumor inhibition rate of oHA-GX1 (100 mg/kg) against SGC-7901 tumor-bearing mice were 78.4 %, which was comparable to that of front-line chemotherapy drugs. Also, the cytotoxicity study on normal cells, hemolysis test, hemagglutination assay and the acute toxicity test demonstrate that oHA-GX1 exhibited excellent biosafety. This molecular targeted drug that utilizes the multiple receptor-binding sites to get rid of the side effects caused by off-target paves a new direction for the discovery of anticancer drugs with high efficacy and low adverse effects.
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Affiliation(s)
- Pei Jing
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China; Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province 646000, China
| | - Yuling Luo
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province 646000, China
| | - Liang Wang
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Jiangbing Tan
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Yun Chen
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China
| | - Ying Chen
- The State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Medical University, University Town, Guian New District, 550025, Guizhou, China
| | - Shiyong Zhang
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China.
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11
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Liao C, Wang X, Zhou X, Wang D, Zhang Z, Liu Y, Wu X, Chen Y, Tan Y, Dai X, Jing P, Pang J, Xiao X, Liu J, Liao X, Zhang S. Dietary Antioxidant-Constructed Nanodrugs Can High-Efficiently Kill Cancer Cells while Protecting Noncancer Cells. ACS Appl Mater Interfaces 2022; 14:49508-49520. [PMID: 36315104 DOI: 10.1021/acsami.2c12043] [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: 06/16/2023]
Abstract
Despite great advances, the development of cancer drugs that can efficiently kill cancer cells while protecting noncancer cells has not been achieved. By using only dietary antioxidants vitamin C (VC) and (R)-(+)-lipoic acid (LA), we herein develop a nanodrug VC@cLAV featuring the above function. After entering cells, cLAV dissociates into LA and DHLA (dihydrolipoic acid, reduced form of LA) and releases VC and DHA (dehydroascorbate, oxidized form of VC). In cancer cells, the two redox pairs recycle each other and dramatically promote the intracellular reactive oxygen species production to kill cancer cells at low doses comparable to cytotoxic drugs. Oppositely in noncancer cells, the LA/DHLA and VC/DHA pairs exert anti-oxidant action to actively protect the organism by preventing the normal cells from oxidative stress and repairing cells suffering from oxidative stress. When compared with the first-line cytotoxic drug, VC@cLAV displayed superior therapeutic outcomes yet without side effects in diverse tumor models including patient-derived xenograft (PDX). This drug with efficient cancer cell killing and noncancer cell protection represents a new cancer therapy.
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Affiliation(s)
- Chunyan Liao
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
| | - Xiang Wang
- Department of Neurosurgery, West China Hospital of Sichuan University, Chengdu610041, China
| | - Xueying Zhou
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
| | - Dequan Wang
- Chengdu Seventh People's Hospital and Chengdu Cancer Hospital, 12 Middle Street, Chengdu610041, China
| | - Ziyin Zhang
- Chengdu Seventh People's Hospital and Chengdu Cancer Hospital, 12 Middle Street, Chengdu610041, China
| | - Yan Liu
- Center of Growth, Metabolism and Aging, School of Life Sciences, Sichuan University, Chengdu, Sichuan610065China
| | - Xiao Wu
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
| | - Ying Chen
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
- Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guiyang, Guizhou550025, China
| | - Yifeng Tan
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
| | - Xin Dai
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
- Zunyi Medical and Pharmaceutical College, Pingan Road, Xinpu District, Zunyi56300, China
| | - Pei Jing
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
- Department of Pharmacy of the Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou646000, China
| | - Jie Pang
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
| | - Xiao Xiao
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
| | - Jie Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital of Sichuan University, Chengdu610041, China
| | - Xiaoming Liao
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
| | - Shiyong Zhang
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu610064, China
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12
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Chen Y, Liao X, Jing P, Hu L, Yang Z, Yao Y, Liao C, Zhang S. Linoleic Acid-Glucosamine Hybrid for Endogenous Iron-Activated Ferroptosis Therapy in High-Grade Serous Ovarian Cancer. Mol Pharm 2022; 19:3187-3198. [PMID: 35939328 DOI: 10.1021/acs.molpharmaceut.2c00333] [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] [Indexed: 11/28/2022]
Abstract
As the most common subtype in ovarian malignancies, high-grade serous ovarian cancer (HGSOC) made less therapeutic progress in past decades due to the lack of effective drug-able targets. Herein, an effective linoleic acid (LA) and glucosamine (GlcN) hybrid (LA-GlcN) was synthesized for the treatment of HGSOC. The GlcN was introduced to recognize the glucose transporter 1 (GLUT 1) overexpressed in tumor cells to enhance the uptake of LA-GlcN, and the unsaturated LA was employed to trigger ferroptosis by iron-dependent lipid peroxidation. Since the iron content of HGSOC was ∼5 and 2 times, respectively, higher than that of the normal ovarian cells and low-grade serous ovarian cancer cells, these excess irons make them a good target to enhance the ferroptosis of LA-GlcN. The in vitro study demonstrated that LA-GlcN could selectively kill HGSOC cells without affecting normal cells; the in vivo study revealed that LA-GlcN at the dose of 50 mg kg-1 achieved a comparable tumor inhibition as doxorubicin hydrochloride (4 mg kg-1) while the overall survival of mice was extended largely due to the low toxicity, and when the dose was increased to 100 mg kg-1, the therapeutic outcomes could be improved further. This dietary hybrid which targets the excess endogenous iron to activate ferroptosis represents a promising drug for HGSOC treatment.
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Affiliation(s)
- Ying Chen
- The State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China.,College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Xiaoming Liao
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Pei Jing
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province 646000, China
| | - Liangkui Hu
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Zengqiu Yang
- The State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China
| | - Yongchao Yao
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China.,State Key Laboratory of Biotherapy and Cancer Center, West China Hospital Sichuan University, Chengdu 610041, China
| | - Chunyan Liao
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Shiyong Zhang
- College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
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13
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Zhang W, Jing P, Du J, Wu S, Yan W, Liu G. Interfacial-interaction-induced fabrication of biomass-derived porous carbon with enhanced intrinsic active sites. Chinese Journal of Catalysis 2022. [DOI: 10.1016/s1872-2067(21)64031-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Li T, Jing P, Yang L, Wan Y, Du X, Wei J, Zhou M, Liu Z, Lin Y, Zhong Z. CAQK modification enhances the targeted accumulation of metformin-loaded nanoparticles in rats with spinal cord injury. Nanomedicine 2022; 41:102526. [PMID: 35104674 DOI: 10.1016/j.nano.2022.102526] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 01/13/2022] [Accepted: 01/18/2022] [Indexed: 12/11/2022]
Abstract
Spinal cord injury (SCI) often causes neuronal membrane rupture and immediate death of neurons, followed by complicated secondary injuries. Treatment of SCI still remains a major challenge in clinical practice; thus, a great advance is urgently needed in this field. Metformin (MET) has anti-oxidant, anti-inflammatory, anti-apoptotic and neuroprotective properties, which may exert a potential therapeutic effect on SCI. In this study, we established a zein-based MET-loaded nanodrug system (CAQK-MET-NPs) for the targeted drug delivery for SCI. The results showed that MET could be effectively encapsulated into zein to obtain the zein-based spherical nanoparticles. Pharmacokinetic analysis indicated that CAQK-MET-NPs exhibited sustained-release and long-term therapeutic effects. The fluorescence imaging and tissue distribution experiments showed that CAQK-MET-NPs could efficiently accumulate at the lesion site of SCI rats. In conclusion, CAQK-MET-NPs may be a promising nanodrug for the treatment of SCI.
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Affiliation(s)
- Ting Li
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; The Second Hospital of Traditional Chinese Medicine in Sichuan Province, Chengdu, Sichuan, China
| | - Pei Jing
- Department of Pharmacy, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Lingling Yang
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Yujie Wan
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Xingjie Du
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Jun Wei
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Meiling Zhou
- Department of Pharmacy, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Zhongbing Liu
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Yan Lin
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.
| | - Zhirong Zhong
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.
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15
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Wu JW, Zhang R, Qin YL, Wang L, Han MB, Zhao ZF, Jing P, Sun HL, Wang S, Huang N, Li BG, Wu DD, Zhang C, Qi XG. First reference genome assembly of the Indochinese silvered langur (<i>Trachypithecus germaini</i>). Zool Res 2022; 43:604-607. [PMID: 35726587 PMCID: PMC9336458 DOI: 10.24272/j.issn.2095-8137.2022.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Jin-Wei Wu
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Ru Zhang
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Ya-Lin Qin
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Li Wang
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Ming-Bo Han
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Zi-Fan Zhao
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Pei Jing
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Hai-Lu Sun
- BGI-Shenzhen, Shenzhen, Guangdong 518083, China
| | - Song Wang
- Nanning Zoo, Nanning, Guangxi 450107, China
| | - Ning Huang
- Nanning Zoo, Nanning, Guangxi 450107, China
| | - Bao-Guo Li
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Dong-Dong Wu
- Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Chi Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai 810008, China. E-mail:
| | - Xiao-Guang Qi
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China. E-mail:
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16
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Wu JW, Zhang R, Qin YL, Wang L, Han MB, Zhao ZF, Jing P, Sun HL, Wang S, Huang N, Li BG, Wu DD, Zhang C, Qi XG. First reference genome assembly of the Indochinese silvered langur(Trachypithecus germaini). Zool Res 2022. [DOI: 10.24272/j.issn.2095-8137.2022.4.dwxyj202204012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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17
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Yang M, Yang X, Jing P, Yang X, Zhao Z. [Prognostic value of coagulation function combined with acute physiology and chronic health evaluation II and sequential organ failure assessment scores for patients with bloodstream infection]. Zhonghua Wei Zhong Bing Ji Jiu Yi Xue 2021; 33:1434-1439. [PMID: 35131009 DOI: 10.3760/cma.j.cn121430-20210910-01361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To evaluate the prognostic value of platelet count (PLT), coagulation indexes, acute physiology and chronic health evaluation II (APACHE II), and sequential organ failure assessment (SOFA) in patients with bloodstream infection. METHODS A retrospective single center cohort study was conducted, patients with at least one positive blood culture bloodstream infection hospitalized in the intensive care unit (ICU) of Ningxia Medical University General Hospital from January 2016 to October 2020 were selected as the research objects, basic data and pathogen distribution, coagulation function, and prognosis at 28 days were collected, the APACHE II score, SOFA score based on the results of laboratory examination within 24 hours of blood culture were calculated. Patients were divided into the survival group and the death group according to the 28-day prognosis, and the differences of the above indicators were compared. Multivariate Logistic regression analysis was used to screen out the risk factors for 28-day death of patients with bloodstream infection. Receiver operator characteristic curve (ROC curve) was drawn to analyze the predictive efficacy of various risk factors for 28-day prognosis of patients with bloodstream infection. RESULTS A total of 215 patients with bloodstream infection were enrolled, of which 117 survived and 98 died within 28 days. The 256 strains of pathogenic bacteria were detected, including 161 (62.89%) Gram-negative bacteria (G-), 76 (29.69%) Gram-positive bacteria (G+), 17 fungi (6.64%), and 2 other strains (0.78%). The main pathogenic bacteria were Escherichia coli (53 strains, 20.70%), Enterococcus (37 strains, 14.45%), and Klebsiella pneumoniae (34 strains, 13.28%). Compared with the survival group, patients in the death group were older (years old: 60.98±16.08 vs. 55.64±16.35), had higher levels of body temperature, SOFA score, APACHE II score, proportion of malignant tumor and pulmonary infection, blood lactic acid (Lac), and creatinine [Cr; body temperature (centigrade): 39.12±1.10 vs. 38.67±1.09, SOFA score: 13.05±4.40 vs. 7.85±3.74, APACHE II score: 24.01±8.18 vs. 15.38±6.59, proportion of malignant tumor: 15.31% (15/98) vs. 12.82% (15/117), proportion of patients with pulmonary infection: 84.69% (83/98) vs. 72.65% (85/117), Lac (mmol/L): 7.13±6.04 vs. 4.31±2.98, Cr (μmol/L): 189.73±141.81 vs. 124.55±106.17, all P < 0.05]. The prothrombin time (PT), activated partial thrombin time (APTT), and thrombin time (TT) were significantly longer [PT (s): 19.51±15.16 vs. 14.94±2.86, APTT (s): 52.74±26.82 vs. 40.77±15.30, TT (s): 21.59±18.46 vs. 17.38±2.59, all P < 0.05], PLT was significantly decreased [×109/L: 43.50 (18.75, 92.75) vs. 86.00 (36.00, 154.50), P < 0.05]. Logistic regression analysis showed that body temperature, age, SOFA score and APACHE II score were independent risk factors [odds ratio (OR) were 1.388, 1.023, 0.817 and 0.916, respectively, 95% confidence intervals (95%CI) were 1.001-1.926, 1.001-1.046, 0.730-0.913, 0.867-0.968, with respective P values of 0.046, 0.043, 0.000, 0.002]. ROC curve analysis showed that SOFA score, APACHE II score, temperature, age had certain predictive values for the prognosis of patients with bloodstream infection, and area under ROC curve (AUC) was 0.815, 0.795, 0.625 and 0.594, respectively (all P < 0.05). The AUC predicted by the combination of the 4 variables was as high as 0.851, the specificity was 79.3%, and the sensitivity was 74.2%, suggesting that the combination variables could predict the death of patients with bloodstream infection with higher accuracy. CONCLUSIONS PLT and coagulation indexes are helpful to evaluate the prognosis of patients with bloodstream infection in ICU. APACHE II score and SOFA score are directly related to the prognosis of patients with bloodstream infection.
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Affiliation(s)
- Mingyue Yang
- School of Clinical Medicine, Ningxia Medical University, Yinchuan 750000, Ningxia Hui Autonomous Region, China
| | - Xiaojuan Yang
- Department of Critical Care Medicine, Ningxia Medical University General Hospital, Yinchuan 750000, Ningxia Hui Autonomous Region, China
| | - Pei Jing
- School of Clinical Medicine, Ningxia Medical University, Yinchuan 750000, Ningxia Hui Autonomous Region, China
| | - Xiaojun Yang
- Department of Critical Care Medicine, Ningxia Medical University General Hospital, Yinchuan 750000, Ningxia Hui Autonomous Region, China
| | - Zhijun Zhao
- Medical Experimental Center, Ningxia Medical University General Hospital,Yinchuan 750000, Ningxia Hui Autonomous, China. Corresponding author: Yang Xiaojun,
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18
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Yang J, Ji L, Liu S, Jing P, Hu J, Jin D, Wang L, Xie G. The CaM1-associated CCaMK-MKK1/6 cascade positively affects lateral root growth via auxin signaling under salt stress in rice. J Exp Bot 2021; 72:6611-6627. [PMID: 34129028 DOI: 10.1093/jxb/erab287] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 02/01/2021] [Accepted: 06/12/2021] [Indexed: 06/12/2023]
Abstract
Ca2+/calmodulin (CaM)-dependent protein kinases (CCaMKs) and mitogen-activated protein kinase kinases (MAPKKs) are two types of kinases that regulate salt stress response in plants. It remains unclear, however, how they cooperatively affect lateral root growth under salt stress. Here, two conserved phosphorylation sites (S102 and T118) of OsCaM1 were identified, and found to affect the ability to bind to Ca2+in vitro and the kinase activity of OsCCaMK in vivo. OsCCaMK specifically interacted with OsMKK1/6 in a Ca2+/CaM-dependent manner. In vitro kinase and in vivo dual-luciferase assays revealed that OsCCaMK phosphorylated OsMKK6 while OsMKK1 phosphorylated OsCCaMK. Overexpression and antisense-RNA repression expression of OsCaM1-1, and CRISPR/Cas9-mediated gene editing mutations of OsMKK1, OsMKK6, and OsMKK1/6 proved that OsCaM1-1, OsMKK1, and OsMKK6 enhanced the auxin content in roots and lateral root growth under salt stress. Consistently, OsCaM1-1, OsMKK1, and OsMKK6 regulated the transcript levels of the genes of this cascade, and salt stress-related and lateral root growth-related auxin signaling under salt stress in rice roots. These findings demonstrate that the OsCaM1-associated OsCCaMK-OsMKK1/6 cascade plays a critical role in recruiting auxin signaling in rice roots. These results also provide new insight into the regulatory mechanism of the CaM-mediated phosphorylation relay cascade to auxin signaling in lateral root growth under salt stress in plants.
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Affiliation(s)
- Jun Yang
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Lingxiao Ji
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shuang Liu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Pei Jing
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jin Hu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Deming Jin
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Lingqiang Wang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Guosheng Xie
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Li H, Jing P, Lu J, Xie J, Zhai L, Xi L. Dipyridyl-Decorated Nitronyl Nitroxide-Dy III Single-Molecule Magnet with a Record Energy Barrier of 146 K. Inorg Chem 2021; 60:7622-7626. [PMID: 34010554 DOI: 10.1021/acs.inorgchem.1c00809] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A nitronyl nitroxide biradical with a capping N-donor group was discovered to improve single-molecule-magnet behavior of the Dy-biradical cluster, generating a magnetic reversal barrier of 146 K. As far as we know, the effective energy barrier of the Dy compound is largest in the nitronyl nitroxide 4f system by far.
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Affiliation(s)
- Hongdao Li
- Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China.,Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Pei Jing
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jiao Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jing Xie
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Lijun Zhai
- Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Lu Xi
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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Jing P, Xi L, Lu J, Han J, Huang X, Jin C, Xie J, Li L. Regulating Spin Dynamics of Nitronyl Nitroxide Biradical Lanthanide Complexes through Introducing Different Transition Metals. Chem Asian J 2021; 16:793-800. [PMID: 33590716 DOI: 10.1002/asia.202100062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 01/21/2021] [Revised: 02/14/2021] [Indexed: 11/05/2022]
Abstract
Four biradical-Ln complexes with different transition metal ions, namely [LnM(hfac)5 (NITPh-PyPzbis)] (MII =MnII and LnIII =Gd 1, Dy 2; MII =NiII and LnIII =Tb 3, Dy 4), were prepared by the reaction of Ln(hfac)3 ⋅ 2H2 O, Mn(hfac)2 ⋅ 2H2 O or Ni(hfac)2 ⋅ 2H2 O with NITPh-PyPzbis biradical (hfac=hexafluoroacetylacetonate, NITPh-PyPzbis=5-(3-(2-pyridinyl)-1H-pyrazol-1-yl)-1,3-bis(1'-oxyl-3'-oxido- 4',4',5',5'-tetramethyl-4,5-hydro-1H-imidazol-2-yl)benzene). In complexes 1-4, the NITPh-PyPzbis biradical chelates one LnIII ion by means of its aminoxyl moieties and the transition metal ion is introduced through the two N donors from the pyridyl pyrazolyl moiety. Magnetic investigations indicate that complex 4 displays visible maxima in frequency/temperature-dependent χ'' signals with two-step relaxation processes, but complex 2 exhibits no slow magnetization relaxation. The comparison of structure parameters of both Dy complexes indicates that the symmetries of coordination spheres of two Dy ions are D2d for 2 and C2v for 4, which thus probably results in different magnetic relaxation behaviors. This work provides new insight for improving properties of Ln-biradical based SMMs.
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Affiliation(s)
- Pei Jing
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Lu Xi
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Jiao Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Jing Han
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Xiaohui Huang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Chaoyi Jin
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Junfang Xie
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
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21
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Lu J, Jing P, Jin C, Xie J, Li L. Modulating the magnetization dynamics in Ln-Cu-Rad hetero-tri-spin complexes through cis/ trans coordination of nitronyl nitroxide radicals around the metal center. Dalton Trans 2021; 50:3280-3288. [PMID: 33587736 DOI: 10.1039/d1dt00090j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Self-assembling the novel nitronyl nitroxide radical NIT-3Py-5-Ph (2-(5-phenyl-3-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) with Ln(hfac)3·2H2O and Cu(hfac)2 (hfac = hexafluoroacetylacetonate) resulted in two heterometallic complexes with formula [LnCu(hfac)5(NIT-3Py-5-Ph)2] (Ln = Gd 1, Dy 2), in which two NIT-3Py-5-Ph radicals are coordinated with the LnIII ion via their nitroxide units in the cis-arrangement manner and the CuII ion is ligated by the pyridyl N donors of the radicals. Interestingly, when the phenyl group of NIT-3Py-5-Ph was replaced with a p-pyridyl group, a new family of 2D networks, namely, {[Ln(hfac)3][Cu(hfac)2]2(NIT-3Py-5-4Py)2}n (Ln = Gd 3, Tb 4, Dy 5; NIT-3Py-5-4Py = 2-(5-(4-pyridyl)-3-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) was obtained. In the 2D sheet, each NIT-3Py-5-4Py ligand serves as a μ3-bridge to bind one LnIII center by the aminoxyl moiety and two CuII ions through two pyridine groups to form a 2D structure. The LnIII ion is coordinated by two NO units of two radicals in a trans configuration. DC magnetic measurements indicate that ferromagnetic LnIII-NO exchange occurs in 1-5. AC studies reveal that 2 displays slow relaxation of the magnetization while no such magnetic relaxation is found in complex 5. The observed different magnetic relaxation behaviors of two Dy analogues could be attributed to the different coordination modes of NO groups of the radicals, and the coordination geometry of the Dy center is from C2v in 2 to D2d in 5.
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Affiliation(s)
- Jiao Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Pei Jing
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Chaoyi Jin
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Junfang Xie
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
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22
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Li H, Jing P, Lu J, Xi L, Wang Q, Ding L, Wang WM, Song Z. Multifunctional properties of {CuLn} systems involving nitrogen-rich nitronyl nitroxide: single-molecule magnet behavior, luminescence, magnetocaloric effects and heat capacity. Dalton Trans 2021; 50:2854-2863. [PMID: 33538274 DOI: 10.1039/d0dt04344c] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A series of nitrogen-rich nitronyl nitroxide radical PPNIT (1)-based (PPNIT = 2-(1-(pyrazin-2-yl)-1H-pyrazole)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide) 3d-4f ring-shaped tetranuclear clusters [Ln2Cu2(hfac)10(PPNIT)2(H2O)2]·CHCl3 (LnIII = Gd 2, Tb 3, Dy 4; hfac = hexafiuoroacetylacetonate) with multifunctional properties were isolated. The magnetic behavior, luminescence and heat capacity of the 3d-4f complexes were investigated, displaying interesting multiple properties of the molecular materials. The Gd derivative shows a magnetocaloric effect with the maximum entropy change (-ΔSm) of 15.3 J kg-1 K-1 at 2 K for ΔH = 70 kOe. The Tb cluster exhibits spin glass behavior and the characteristic fluorescence emission of the TbIII ion, while the Dy cluster exhibits SMM behaviour, and the heat capacity has been investigated. Notably, in nitronyl nitroxide radical-metal systems, the investigation of diverse properties is still scarce so far. This work can pave the way towards the synthesis of multifunctional materials that combine SMM behavior, and optical or/and thermodynamic properties.
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Affiliation(s)
- Hongdao Li
- Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China. and Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Pei Jing
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Jiao Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Lu Xi
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Qi Wang
- Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China.
| | - Lifeng Ding
- Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China.
| | - Wen-Min Wang
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Zhenjun Song
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China. and School of Pharmaceutical and Materials Engineering, Taizhou University, Taizhou 318000, China
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23
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Jing P, Kong D, Ji L, Kong L, Wang Y, Peng L, Xie G. OsClo5 functions as a transcriptional co-repressor by interacting with OsDi19-5 to negatively affect salt stress tolerance in rice seedlings. Plant J 2021; 105:800-815. [PMID: 33179343 DOI: 10.1111/tpj.15074] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 02/29/2020] [Revised: 09/28/2020] [Accepted: 10/13/2020] [Indexed: 06/11/2023]
Abstract
Caleosins constitute a small protein family with one calcium-binding EF-hand motif. They are involved in the regulation of development and response to abiotic stress in plants. Nevertheless, how they impact salt stress tolerance in rice is largely unknown. Thereby, biochemical and molecular genetic experiments were carried out, and the results revealed that OsClo5 was able to bind calcium and phospholipids in vitro and localized in the nucleus and endoplasmic reticulum in rice protoplasts. At the germination and early seedlings stages, overexpression transgenic lines and T-DNA mutant lines exhibited reduced and increased tolerance to salt stress, respectively, compared with the wild-type. Yeast two-hybrid, bimolecular fluorescence complementation and in vitro pull-down assays demonstrated that the EF-hand motif of OsClo5 was essential for the interactions with itself and OsDi19-5. Yeast one-hybrid, electrophoretic migration shift and dual-luciferase reporter assays identified OsDi19-5 as a transcriptional repressor via the TACART cis-element in the promoters of two salt stress-related target genes, OsUSP and OsMST. In addition, OsClo5 enhanced the inhibitory effect of OsDi19-5 in the tobacco transient system, which was confirmed by qRT-PCR analysis in rice seedlings under salt stress. The collective results deepen the understanding of the molecular mechanism underlying the roles of caleosin in the salt stress response. These findings will also inform efforts to improve salt tolerance of rice.
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Affiliation(s)
- Pei Jing
- MOA Key Laboratory of Crop Ecophysiology & Farming System in the Middle Reaches of the Yangtze River, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Dongyan Kong
- MOA Key Laboratory of Crop Ecophysiology & Farming System in the Middle Reaches of the Yangtze River, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lingxiao Ji
- MOA Key Laboratory of Crop Ecophysiology & Farming System in the Middle Reaches of the Yangtze River, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lin Kong
- MOA Key Laboratory of Crop Ecophysiology & Farming System in the Middle Reaches of the Yangtze River, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yanting Wang
- Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Liangcai Peng
- Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Guosheng Xie
- MOA Key Laboratory of Crop Ecophysiology & Farming System in the Middle Reaches of the Yangtze River, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
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24
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Sun J, Wu Q, Lu J, Jing P, Du Y, Li L. Slow relaxation of magnetization in lanthanide-biradical complexes based on a functionalized nitronyl nitroxide biradical. Dalton Trans 2020; 49:17414-17420. [PMID: 33216082 DOI: 10.1039/d0dt03312j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Three novel lanthanide-biradical complexes {[Ln(hfac)3]2(mbisNITPyPh)(H2O)}{[Ln(hfac)3](mbisNITPyPh)}·CHCl3 (1-Gd; 2-Tb; 3-Dy) were successfully achieved by reacting the biradical mbisNITPyPh (5-(3-pyridyl)-1,3-bis(1-oxyl-3'-oxido-4',4',5',5'-tetramethyl-4,5-hydro-1H-imidazol-2-yl)benzene) with Ln(hfac)3·2H2O (hfac = hexafluoroacetylacetonate). These Ln-biradical complexes consist of two kinds of spin moieties, namely, dinuclear {[Ln(hfac)3]2(mbisNITPyPh)(H2O)} and mononuclear {[Ln(hfac)3](mbisNITPyPh)}, in which two adjacent dinuclear units are linked by intermolecular hydrogen bonds involving the uncoordinated nitroxide units and the coordinated water molecules of Ln ions, forming a cyclic tetranuclear structure unit. The magnetization study reveals that intramolecular Ln(iii)-coordinated NO ferromagnetic interactions are dominant in the present system. Moreover, the clear frequency dependence of ac magnetic susceptibilities of complex 3-Dy is indicative of slow relaxation of magnetization behavior, indicating its single-molecule magnet nature.
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Affiliation(s)
- Juan Sun
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, P. R. China.
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25
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Xi L, Sun J, Wang K, Lu J, Jing P, Li L. Slow magnetic relaxation in CoII–LnIII heterodinuclear complexes achieved through a functionalized nitronyl nitroxide biradical. Dalton Trans 2020; 49:1089-1096. [DOI: 10.1039/c9dt04036f] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five nitronyl nitroxide biradical-CoII–LnIII heterodinuclear complexes were achieved and the DyCo derivative displayed visible temperature/frequency-dependent χ′′ peaks, indicating the SMM behavior.
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Affiliation(s)
- Lu Xi
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Juan Sun
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Kang Wang
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Jiao Lu
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Pei Jing
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Licun Li
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
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26
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Wang K, Sun J, Xi L, Lu J, Jing P, Li L. Heterometallic Ln-Cu complexes derived from a phenyl pyrimidyl substituted nitronyl nitroxide biradical. Dalton Trans 2019; 48:14383-14389. [PMID: 31508636 DOI: 10.1039/c9dt03081f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Utilizing a novel nitronyl nitroxide biradical bisNITPhPyrim involving a pyrimidine group ([5-(5-pyrimidyl)-1,3-bis(1'-oxyl-3'-oxido-4',4',5',5'-tetramethyl-4,5-hydro-1H-imidazol-2-yl)]benzene), three heterometallic Ln-Cu complexes with formulas [Ln(hfac)3Cu(hfac)2(bisNITPhPyrim)] (LnIII = Gd 1, Tb 2, and Dy 3; hfac = hexafluoroacetylacetonate) have been achieved. In these complexes, the CuII ions are linked by N atoms of pyrimidine rings of bisNITPhPyrim radicals to form a one-dimensional chain structure, whereas each LnIII ion is chelated with two neighboring NO groups of two NIT moieties of the radical. Magnetic studies reveal the presence of ferromagnetic interactions between the GdIII ion and coordinated NO groups, and between the pyrimidine-bridged copper(ii) spins, which are quantified by a magnetic model, giving J1 = 4.20 cm-1 and J3 = 0.50 cm-1 (J1 and J3 are magnetic exchanges for GdIII-ON and CuII-CuII, respectively). Interestingly, ac magnetic measurements show that complex 3 exhibits slow relaxation of the magnetization.
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Affiliation(s)
- Kang Wang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Juan Sun
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Lu Xi
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Jiao Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Pei Jing
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
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27
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Geng L, Jian W, Jing P, Zhang W, Yan W, Bai FQ, Liu G. Crystal phase effect of iron oxides on the aerobic oxidative coupling of alcohols and amines under mild conditions: A combined experimental and theoretical study. J Catal 2019. [DOI: 10.1016/j.jcat.2019.06.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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28
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Wang K, Zhang J, Lu J, Jing P, Li L. Slow magnetic relaxation in Cu-Ln heterometallic Schiff base complexes containing Ln(hfac)4− as counterions. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.02.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Jing P, Gan T, Qi H, Zheng B, Chu X, Yu G, Yan W, Zou Y, Zhang W, Liu G. Synergism of Pt nanoparticles and iron oxide support for chemoselective hydrogenation of nitroarenes under mild conditions. Chinese Journal of Catalysis 2019. [DOI: 10.1016/s1872-2067(19)63276-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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30
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Chang F, Xiong W, Wang D, Liu XZ, Zhang W, Zhang M, Jing P. Facilitation of ultrasonic microvesicles on homing and molecular mechanism of bone marrow mesenchymal stem cells in cerebral infarction patients. Eur Rev Med Pharmacol Sci 2017; 21:3916-3923. [PMID: 28975970] [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: 06/07/2023]
Abstract
OBJECTIVE Cerebral infarction, or ischemia brain stroke, is a common cerebrovascular disease. Bone marrow mesenchymal stem cells (BMSCs) are widely used to treating ischemia disease such as cardiac infarction. Ultrasonic microvesicles may help the targeting of exogenous factors via localized energy blast. Therefore, this study aims to investigate the effect of ultrasonic microvesicles on the homing of BMSCs on artery thrombosis and the associated molecular mechanisms. MATERIALS AND METHODS Rat BMSCs were isolated and cultured. Rats were divided into sham, model, BMSCs, and microvesicles groups. Cerebral infarction model was prepared by ligation of cervical artery and middle cerebral artery. 3×106/kg BMSCs were transplanted via tail veins. Microvesicles were used for assisting BMSCs infusion. Sex-determining region Y (SRY) gene expression was measured by Real-time PCR, while 2,3,5-triphenyltetrazolium chloride (TTC) staining was employed for describing the area of cerebral infarction. The activity of caspase 3 was assayed by test kit. Vascular endothelial growth factor (VEGF), nuclear factor kappa B (NF-κB) mRNA/protein levels, were quantified by Real-time PCR, and Western blotting, respectively. RESULTS Microvesicle group had significantly elevated SRY expression (p<0.05 compared to BMSCs group). Transplantation of BMSCs remarkably decreased cerebral infarction area, caspase 3 activity or NF-κB expression, and increased VEGF expression (p<0.05 compared to model group). Microvesicle induced BMSCs had more potent effects (p<0.01). CONCLUSIONS Ultrasound microvesicle facilitated homing of BMSCs in cerebral infarction, and improved infarction disease via up-regulating VEGF expression, inhibiting NF-κB expression, and modulating apoptosis.
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Affiliation(s)
- F Chang
- Department of Neurology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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Xue S, Jing P, Xu W. Hemin on graphene nanosheets functionalized with flower-like MnO2 and hollow AuPd for the electrochemical sensing lead ion based on the specific DNAzyme. Biosens Bioelectron 2016; 86:958-965. [DOI: 10.1016/j.bios.2016.07.111] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 07/28/2016] [Accepted: 07/29/2016] [Indexed: 12/12/2022]
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Jing P, Cao S, Xiao S, Zhang X, Ke S, Ke F, Yu X, Wang L, Wang S, Luo Y, Zhong Z. Enhanced growth inhibition of prostate cancer in vitro and in vivo by a recombinant adenovirus-mediated dual-aptamer modified drug delivery system. Cancer Lett 2016; 383:230-242. [PMID: 27721020 DOI: 10.1016/j.canlet.2016.10.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 09/29/2016] [Accepted: 10/02/2016] [Indexed: 12/18/2022]
Abstract
The peptide aptamer DUP-1 targets prostate-specific membrane antigen (PSMA)-negative cells, while the RNA aptamer A10-3.2 targets PSMA-positive prostate cancer cells. Moreover, the tumor-suppressor gene phosphatase and tensin homolog (PTEN) and the chemotherapeutic agent doxorubicin (DOX) effectively inhibit prostate cancer, and a recombinant adenovirus (Ad5) mediates high gene transfer efficiency. Here, we design a dual-aptamer modified tumor targeting gene and DOX delivery system mediated by recombinant adenovirus (A10-3.2(DOX)/DUP-1-PEG-Ad5, ADDP-Ad5). DUP-1 and A10-3.2 are connected to the adenovirus through polyethylene glycol (PEG), PTEN is integrated into Ad5, and DOX is embedded into the double chain of aptamer A10-3.2. The PEG-modification rate of Ad5 is 98.70 ± 2.43%. The DUP-1 and A10-3.2 modified products yield 80.40 ± 1.36% and 82.20 ± 2.14%, respectively. The uptake of ADDP-Ad5 and the expression of the reporter gene are enhanced by the system in PSMA-positive LNCaP and PSMA-negative PC3 human prostate cancer cells. ADDP-Ad5 significantly inhibits the cell growth of both LNCaP and PC3 cells. More importantly, ADDP-Ad5 is active in vivo against LNCaP and PC3 tumor xenografts and exhibits no significant toxicity to the mice. Therefore, ADDP-Ad5 may have clinical potential in prostate cancer therapy.
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Affiliation(s)
- Pei Jing
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China; The Eighth Hospital of Xi'an, Xi'an, Shanxi 710061, China
| | - Shousong Cao
- Laboratory of Cancer Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Shuangli Xiao
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xiaoqin Zhang
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Siyun Ke
- Luzhou Senior High School, Luzhou, Sichuan 646000, China
| | - Famin Ke
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xin Yu
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Li Wang
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Shurong Wang
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Yuling Luo
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhirong Zhong
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
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Zhao J, Jing P, Xue S, Xu W. Dendritic structure DNA for specific metal ion biosensor based on catalytic hairpin assembly and a sensitive synergistic amplification strategy. Biosens Bioelectron 2016; 87:157-163. [PMID: 27551995 DOI: 10.1016/j.bios.2016.08.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 05/12/2016] [Revised: 07/19/2016] [Accepted: 08/11/2016] [Indexed: 12/24/2022]
Abstract
In this work, a sensitive electrochemical biosensing to Pb2+ was proposed based on the high specificity of DNAzymes to Pb2+. The response signal was efficiently amplified by the catalytic hairpin assembly induced by strand replacement reaction and the formation of dendritic structure DNA (DSDNA) by layer-by-layer assembly. Firstly, in the presence of Pb2+, the substrate strand (S1) of the Pb2+-specific DNAzymes was specifically cleaved by Pb2+. Secondly, one of the two fragments (rS1) introduced into the electrode surface was hybridized with a hairpin DNA (H1) and further replaced by another hairpin DNA (H2) by the hybridization reaction of H1 with H2. The released rS1 then induced the next hybridization with H1. After repeated cycles, the catalytic recycling assembly of H2 with H1 was completed. Thirdly, two bioconjugates of Pt@Pd nanocages (Pt@PdNCs) labeled with DNA S3/S4 and electroactive toluidine blue (Tb) (Tb-S3-Pt@PdNCs and Tb-S4-Pt@PdNCs) were captured onto the resultant electrode surface through the hybridization of S3 and H2, S3 and S4, resulting in the formation of DSDNA triggered by layer-by-layer assembly. This formed DSDNA greatly facilitated the immobilization of manganese(III) meso-tetrakis (4-N-methylpyridiniumyl)-porphyrin (MnTMPyP) as mimicking enzyme. Under the synergistic catalysis of Pt@PdNCs and MnTMPyP to H2O2 reduction, the effective signal amplification of the developed Pb2+ biosensor was achieved. As a result, the sensitive detection of the proposed electrochemical strategy for Pb2+ was greatly improved in the range of 0.1pM-200nM with a detection limit of 0.033pM.
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Affiliation(s)
- Jianmin Zhao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Pei Jing
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Shuyan Xue
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Wenju Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China.
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Zhou X, Xue S, Jing P, Xu W. A sensitive impedimetric platform biosensing protein: Insoluble precipitates based on the biocatalysis of manganese(III) meso-tetrakis (4-N-methylpyridiniumyl)-porphyrinin in HCR-assisted dsDNA. Biosens Bioelectron 2016; 86:656-663. [PMID: 27471156 DOI: 10.1016/j.bios.2016.07.065] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 07/08/2016] [Accepted: 07/19/2016] [Indexed: 11/29/2022]
Abstract
In this study, a sensitive biosensing interface for protein was reported based on nonconductive insoluble precipitates (IPs) by the biocatalysis of manganese(III) meso-tetrakis (4-N-methylpyridiniumyl)-porphyrin (MnTMPyP), which was intercalated into formed double-strand DNA (dsDNA) scaffold triggered by hybridization chain reaction (HCR). In the proposed impedimetric aptasensor, carcinoembryonic antigen (CEA) and its aptamer were used as testing model. PtPd nanowires (PtPdNWs) with large surface area and superior conductivity were employed as nanocarriers to greatly immobilize biomolecules (e.g. CEA aptamers). Then, two DNA hairpins H1 and H2 were introduced to trigger HCR with the assistance of DNA initiator, resulting in the formation of a long dsDNA scaffold. Meanwhile, mimicking enzyme MnTMPyP molecules were embedded into the resultant dsDNA, in situ generating the complex MnTMPyP-dsDNA with peroxidase-like activity. Under the biocatalysis of MnTMPyP-dsDNA, 3,3-diaminobenzidine (DAB) was oxidized to form nonconductive IPs. As a result, the electron transfer between electrode interface and redox probe was vastly hindered, leading to the significant amplification of electrochemical impedimetric signal. So, greatly improved analytical performances of the proposed aptasensor were achieved with a detection limit as low as 0.030pgmL(-1). And the successful assay of CEA in human serum samples enabled the developed biosensing platform to have promising potential in bioanalysis.
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Affiliation(s)
- Xingxing Zhou
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Shuyan Xue
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Pei Jing
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Wenju Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China.
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Jing P, Zou J, Kong L, Hu S, Wang B, Yang J, Xie G. OsCCD1, a novel small calcium-binding protein with one EF-hand motif, positively regulates osmotic and salt tolerance in rice. Plant Sci 2016; 247:104-14. [PMID: 27095404 DOI: 10.1016/j.plantsci.2016.03.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [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: 10/25/2015] [Revised: 03/16/2016] [Accepted: 03/19/2016] [Indexed: 05/20/2023]
Abstract
Calcium-binding proteins play key roles in the signal transduction in the growth and stress response in eukaryotes. However, a subfamily of proteins with one EF-hand motif has not been fully studied in higher plants. Here, a novel small calcium-binding protein with a C-terminal centrin-like domain (CCD1) in rice, OsCCD1, was characterized to show high similarity with a TaCCD1 in wheat. As a result, OsCCD1 can bind Ca(2+) in the in vitro EMSA and the fluorescence staining calcium-binding assays. Transient expression of green fluorescent protein (GFP)-tagged OsCCD1 in rice protoplasts showed that OsCCD1 was localized in the nucleus and cytosol of rice cells. OsCCD1 transcript levels were transiently induced by osmotic stress and salt stress through the calcium-mediated ABA signal. The rice seedlings of T-DNA mutant lines showed significantly less tolerance to osmotic and salt stresses than wild type plants (p<0.01). Conversely, its overexpressors can significantly enhance the tolerance to osmotic and salt stresses than wild type plants (p<0.05). Semi-quantitative RT-PCR analysis revealed that, OsDREB2B, OsAPX1 and OsP5CS genes are involved in the rice tolerance to osmotic and salt stresses. In sum, OsCCD1 gene probably affects the DREB2B and its downstream genes to positively regulate osmotic and salt tolerance in rice seedlings.
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Affiliation(s)
- Pei Jing
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Juanzi Zou
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Lin Kong
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Shiqi Hu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Biying Wang
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jun Yang
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Guosheng Xie
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
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Xiong D, Liu Z, Bian T, Li J, Huang W, Jing P, Liu L, Wang Y, Zhong Z. GX1-mediated anionic liposomes carrying adenoviral vectors for enhanced inhibition of gastric cancer vascular endothelial cells. Int J Pharm 2015; 496:699-708. [DOI: 10.1016/j.ijpharm.2015.11.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Revised: 10/20/2015] [Accepted: 11/09/2015] [Indexed: 10/22/2022]
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Jing P, Yi H, Xue S, Yuan R, Xu W. A ‘signal on-off’ electrochemical peptide biosensor for matrix metalloproteinase 2 based on target induced cleavage of a peptide. RSC Adv 2015. [DOI: 10.1039/c5ra10662a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A sensitive ‘signal on–off’ electrochemical peptide biosensor for MMP-2 assay was fabricated based on target induced cleavage of a specific peptide.
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Affiliation(s)
- Pei Jing
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
| | - Huayu Yi
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
| | - Shuyan Xue
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
| | - Ruo Yuan
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
| | - Wenju Xu
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
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Xue S, Yi H, Jing P, Xu W. Dendritic Pt@Au nanowires as nanocarriers and signal enhancers for sensitive electrochemical detection of carcinoembryonic antigen. RSC Adv 2015. [DOI: 10.1039/c5ra15038h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
An electrochemical aptasensor for the sensitive and selective determination of carcinoembryonic antigen was constructed based on dendritic Pt@AuNWs as nanocarriers and signal enhancers.
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Affiliation(s)
- Shuyan Xue
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Huayu Yi
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Pei Jing
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Wenju Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
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Xu W, Xue S, Yi H, Jing P, Chai Y, Yuan R. A sensitive electrochemical aptasensor based on the co-catalysis of hemin/G-quadruplex, platinum nanoparticles and flower-like MnO2 nanosphere functionalized multi-walled carbon nanotubes. Chem Commun (Camb) 2015; 51:1472-4. [DOI: 10.1039/c4cc08860c] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sensitive thrombin electrochemical aptasensor is developed based on the co-catalysis of hemin/G-quadruplex, platinum nanoparticles and flower-like MnO2 nanosphere functionalized multi-walled carbon nanotubes.
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Affiliation(s)
- Wenju Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Shuyan Xue
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Huayu Yi
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Pei Jing
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
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Cui J, Yang Y, Li H, Leng Y, Qian K, Huang Q, Zhang C, Lu Z, Chen J, Sun T, Wu R, Sun Y, Song H, Wei X, Jing P, Yang X, Zhang C. MiR-873 regulates ERα transcriptional activity and tamoxifen resistance via targeting CDK3 in breast cancer cells. Oncogene 2014; 34:3895-907. [PMID: 25531331 DOI: 10.1038/onc.2014.430] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 11/19/2014] [Accepted: 11/21/2014] [Indexed: 12/21/2022]
Abstract
miRNAs (microRNAs) are frequently and aberrantly expressed in many cancers. MiR-873 has been revealed to be downregulated in colorectal cancer and glioblastoma. However, its function remains unclear. Here we report that miR-873 is downregulated in breast tumor compared with normal tissue. Enforced expression of miR-873 decreases the transcriptional activity of ER (estrogen receptor)-α but not ERβ through the modulation of ERα phosphorylation in ER-positive breast cancer cells. We also found that miR-873 inhibits breast cancer cell proliferation and tumor growth in nude mice. Reporter gene assays revealed cyclin-dependent kinase 3 (CDK3) as a direct target of miR-873. CDK3 was shown to be overexpressed in breast cancer and phosphorylate ERα at Ser104/116 and Ser118. Furthermore, we found that Mir-873 inhibits ER activity and cell growth via targeting CDK3. Interestingly, miR-873 was observed to be downregulated in tamoxifen-resistant MCF-7/TamR cells, while CDK3 is overexpressed in these cells. More importantly, re-expression of miR-873 reversed tamoxifen resistance in MCF-7/TamR cells. Our data demonstrate that miR-873 is a novel tumor suppressor in ER-positive breast cancer and a potential therapeutic approach for treatment of tamoxifen-resistant breast cancer.
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Affiliation(s)
- J Cui
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - Y Yang
- Beijing Institute for Neuroscience, Capital Medical University, Beijing, China
| | - H Li
- Department of Molecular & Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Y Leng
- The Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - K Qian
- The Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - Q Huang
- Department of Animal Sciences and Technology, Jilin Agriculture University, Changchun, China
| | - C Zhang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Z Lu
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - J Chen
- Urology Department, the First Hospital of Nanchang University, Nanchang, China
| | - T Sun
- Urology Department, the First Hospital of Nanchang University, Nanchang, China
| | - R Wu
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - Y Sun
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - H Song
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - X Wei
- Department of Applied Chemistry, College of Chemistry & Molecular Engineering, Peking University, Beijing, China
| | - P Jing
- Department of Chemistry, College of Arts and Sciences, Indiana University-Purdue University Fort Wayne Fort Wayne, IN, USA
| | - X Yang
- Institute of Health Sciences, Anhui University, Hefei, China
| | - C Zhang
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
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Jing P, Yi H, Xue S, Chai Y, Yuan R, Xu W. A sensitive electrochemical aptasensor based on palladium nanoparticles decorated graphene-molybdenum disulfide flower-like nanocomposites and enzymatic signal amplification. Anal Chim Acta 2014; 853:234-241. [PMID: 25467464 DOI: 10.1016/j.aca.2014.10.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 09/26/2014] [Accepted: 10/06/2014] [Indexed: 11/17/2022]
Abstract
In the present study, with the aggregated advantages of graphene and molybdenum disulfide (MoS2), we prepared poly(diallyldimethylammonium chloride)-graphene/molybdenum disulfide (PDDA-G-MoS2) nanocomposites with flower-like structure, large surface area and excellent conductivity. Furthermore, an advanced sandwich-type electrochemical assay for sensitive detection of thrombin (TB) was fabricated using palladium nanoparticles decorated PDDA-G-MoS2 (PdNPs/PDDA-G-MoS2) as nanocarriers, which were functionalized by hemin/G-quadruplex, glucose oxidase (GOD), and toluidine blue (Tb) as redox probes. The signal amplification strategy was achieved as follows: Firstly, the immobilized GOD could effectively catalyze the oxidation of glucose to gluconolactone, coupling with the reduction of the dissolved oxygen to H2O2. Then, both PdNPs and hemin/G-quadruplex acting as hydrogen peroxide (HRP)-mimicking enzyme could further catalyze the reduction of H2O2, resulting in significant electrochemical signal amplification. So the proposed aptasensor showed high sensitivity with a wide dynamic linear range of 0.0001 to 40 nM and a relatively low detection limit of 0.062 pM for TB determination. The strategy showed huge potential of application in protein detection and disease diagnosis.
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Affiliation(s)
- Pei Jing
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Huayu Yi
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shuyan Xue
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Wenju Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education (Southwest University), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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Jing P, Xu W, Yi H, Wu Y, Bai L, Yuan R. An amplified electrochemical aptasensor for thrombin detection based on pseudobienzymic Fe3O4-Au nanocomposites and electroactive hemin/G-quadruplex as signal enhancers. Analyst 2014; 139:1756-61. [PMID: 24519466 DOI: 10.1039/c3an02237d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sensitive and selective electrochemical aptasensor for thrombin detection was constructed based on hemin/G-quadruplex as the signal label and Fe3O4-Au nanocomposites with glucose oxidase (GOx-) and peroxide-mimicking enzyme activity as the signal enhancers. Due to their large surface area and good biocompatibility, Fe3O4-Au nanocomposites were employed to immobilize electroactive hemin/G-quadruplex, which was formed by the conjugation between a single-stranded guanine-rich nucleic acid and hemin. Based on the GOx-mimicking enzyme activity, Au nanoparticles on the surface of the Fe3O4-Au nanocomposites effectively catalyzed the oxidization of glucose in the presence of dissolved O2, accompanied by the production of H2O2. Both the Fe3O4 cores of Fe3O4-Au nanocomposites and hemin/G-quadruplex with H2O2-mimicking enzyme activity could catalyze the reduction of the generated H2O2, which promoted the electron transfer of hemin and amplified the electrochemical signal. The proposed electrochemical aptasensor had a wide dynamic linear range of 0.1 pM to 20 nM with a lower detection limit of 0.013 pM, which provided a promising method for a sensitive assay for the detection of proteins in electrochemical aptasensors.
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Affiliation(s)
- Pei Jing
- Education Ministry Key Laboratory on Luminescence and Real-TimeAnalysis, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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Xu W, Yi H, Yuan Y, Jing P, Chai Y, Yuan R, Wilson GS. An electrochemical aptasensor for thrombin using synergetic catalysis of enzyme and porous Au@Pd core-shell nanostructures for signal amplification. Biosens Bioelectron 2014; 64:423-8. [PMID: 25280342 DOI: 10.1016/j.bios.2014.08.091] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/25/2014] [Accepted: 08/30/2014] [Indexed: 01/01/2023]
Abstract
In this work, a sensitive electrochemical aptasensor for thrombin (TB) based on synergetic catalysis of enzyme and porous Au@Pd core-shell nanostructure has been constructed. With the advantages of large surface area and outstanding catalytic performance, porous Au@Pd core-shell nanostructures were firstly employed as the nanocarrier for the immobilization of electroactive toluidine blue (Tb), hemin/G-quadruplex formed by intercalating hemin into the TB aptamer (TBA) and glucose oxidase (GOx). As a certain amount of glucose was added into the detection cell, GOx rapidly catalyzed the oxidation of glucose, coupling with the local generation of H2O2 in the presence of dissolved O2. Then, porous Au@Pd nanoparticles and hemin/G-quadruplex as the peroxidase mimics efficiently catalyzed the reduction of H2O2, amplifying the electrochemical signal and improving the sensitivity. Finally, a detection limit of 0.037pM for TB was achieved. The excellent performance of the aptasensor indicated its promising prospect as a valuable tool in simple and cost-effective TB detection in clinical application.
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Affiliation(s)
- Wenju Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China; Deparment of Chemistry, University of Kansas, Lawrence, KS, 66045, USA.
| | - Huayu Yi
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yali Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Pei Jing
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - George S Wilson
- Deparment of Chemistry, University of Kansas, Lawrence, KS, 66045, USA
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Gong W, Ma R, Mei D, Jing P, Dong X, Li B, Yang Y, Du L, Mei XG, Hu FQ. A novel subcutaneous infusion delivery system based on osmotic pump:in vitroandin vivoevaluation. Drug Deliv 2013; 21:1-7. [DOI: 10.3109/10717544.2013.838718] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jing P, Luxiang C. Effect of cell-cell direct contact to mesenchymal stem cells differentiate into vascular endothelial cells. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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46
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Jing P, Giusti M. Effects of Extraction Conditions on Improving the Yield and Quality of an Anthocyanin-Rich Purple Corn (Zea mays L.) Color Extract. J Food Sci 2007; 72:C363-8. [DOI: 10.1111/j.1750-3841.2007.00441.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Zhang D, Zhou Z, Li L, Weng J, Huang G, Jing P, Zhang C, Peng J, Xiu L. Islet autoimmunity and genetic mutations in Chinese subjects initially thought to have Type 1B diabetes. Diabet Med 2006; 23:67-71. [PMID: 16409568 DOI: 10.1111/j.1464-5491.2005.01722.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS To explore the contribution of islet autoimmunity and genetic mutations in Chinese patients initially thought to have Type 1B diabetes. METHODS A group of 33 Chinese patients with newly diagnosed Type 1B diabetes, were identified by the absence of autoantibodies to glutamic acid decarboxylase (GAD), IA-2, insulin, thyroid globulin or thyroid peroxidase, or high-risk HLA-DQ haplotypes. The cohort was further characterized by measurement of autoantibodies to carboxypeptidase H (CPH) and SOX13 using radioligand assays, and testing for genetic mutations associated with MODY3/MODY6 and mitochondrial diabetes. Mutations of HNF-1alpha (MODY3) and neuroD1/beta2 (MODY6) genes were screened using the single-strand conformation polymorphism (SSCP) technique and sequencing. Mitochondrial DNA mutations were analysed with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). RESULTS Within the cohort, we found one patient with a novel mutation, R321H (CGC-->CAC) in exon 5 of the HNF-1alpha gene, one with ND1 mt3316 G-->A mutation in mitochondrial DNA, five with Ala45Thr polymorphisms in the neuroD1/beta2 gene, and two patients with autoantibodies to SOX13. CONCLUSIONS Some of the Chinese patients originally thought to have Type 1B diabetes do have other evidence of islet autoimmunity and genetic mutations involved in the underlying aetiology. This suggests that more rigorous screening for these conditions is needed before classifying subjects as having Type 1B diabetes.
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Affiliation(s)
- D Zhang
- Diabetes Center, Institute of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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Jing P. Influence of isentropic transport on seasonal ozone variations in the lower stratosphere and subtropical upper troposphere. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004jd005416] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Davis DD, Chen G, Crawford JH, Liu S, Tan D, Sandholm ST, Jing P, Cunnold DM, DiNunno B, Browell EV, Grant WB, Fenn MA, Anderson BE, Barrick JD, Sachse GW, Vay SA, Hudgins CH, Avery MA, Lefer B, Shetter RE, Heikes BG, Blake DR, Blake N, Kondo Y, Oltmans S. An assessment of western North Pacific ozone photochemistry based on springtime observations from NASA's PEM-West B (1994) and TRACE-P (2001) field studies. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002jd003232] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- D. D. Davis
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
| | - G. Chen
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
- NASA Langley Research Center; Hampton Virginia USA
| | | | - S. Liu
- Institute of Earth Sciences; Academia Sinica; Taipei Taiwan
| | - D. Tan
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
| | - S. T. Sandholm
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
| | - P. Jing
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
| | - D. M. Cunnold
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
| | - B. DiNunno
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
| | | | - W. B. Grant
- NASA Langley Research Center; Hampton Virginia USA
| | - M. A. Fenn
- NASA Langley Research Center; Hampton Virginia USA
| | | | | | - G. W. Sachse
- NASA Langley Research Center; Hampton Virginia USA
| | - S. A. Vay
- NASA Langley Research Center; Hampton Virginia USA
| | | | - M. A. Avery
- NASA Langley Research Center; Hampton Virginia USA
| | - B. Lefer
- National Center for Atmospheric Research; Boulder Colorado USA
| | - R. E. Shetter
- National Center for Atmospheric Research; Boulder Colorado USA
| | - B. G. Heikes
- Graduate School of Oceanography; University of Rhode Island; Narragansett Rhode Island USA
| | - D. R. Blake
- Department of Chemistry; University of California at Irvine; Irvine California USA
| | - N. Blake
- Department of Chemistry; University of California at Irvine; Irvine California USA
| | - Y. Kondo
- Research Center for Advanced Science and Technology; University of Tokyo; Tokyo Japan
| | - S. Oltmans
- National Oceanographic and Atmospheric Administration; Boulder Colorado USA
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Horton H, Rehrauer W, Meek EC, Shultz MA, Piekarczyk MS, Jing P, Carter DK, Steffen SR, Calore B, Urvater JA, Vogel TU, Wilson NA, Watkins DI. A common rhesus macaque MHC class I molecule which binds a cytotoxic T-lymphocyte epitope in Nef of simian immunodeficiency virus. Immunogenetics 2001; 53:423-6. [PMID: 11486280 DOI: 10.1007/s002510100344] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2001] [Indexed: 10/27/2022]
Affiliation(s)
- H Horton
- Wisconsin Regional Primate Research Center, University of Wisconsin, 1220 Capitol Ct., Madison, WI 53715, USA
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