1
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Xin F, Zhao J, Shu W, Zhang X, Luo X, Tian Y, Xing M, Wang H, Peng Y, Tian Y. A thiocarbonate-caged fluorescent probe for specific visualization of peroxynitrite in living cells and zebrafish. Analyst 2021; 146:7627-7634. [PMID: 34787597 DOI: 10.1039/d1an00971k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Peroxynitrite (ONOO-), a highly reactive oxygen species (ROS), is implicated with many physiological and pathological processes including cancer, neurodegenerative diseases and inflammation. In this regard, developing effective tools for highly selective tracking of ONOO- is urgently needed. Herein, we constructed a concise and specific fluorescent probe NA-ONOO for sensing ONOO- by conjugating an ONOO--specific recognition group ((4-methoxyphenylthio)carbonyl, a thiocarbonate derivative) with a naphthalene fluorophore. The probe, NA-ONOO, was in a dark state because the high electrophilicity of (4-methoxyphenylthio)carbonyl disturbs the intramolecular charge transfer (ICT) in the fluorophore. Upon treatment with ONOO-, the fluorescent emission was sharply boosted (quantum yield Φ: 3% to 56.6%) owing to an ONOO- triggered release of (4-methoxyphenylthio)carbonyl from NA-ONOO. Optical analyses showed that NA-ONOO presented high selectivity and sensitivity toward ONOO-. With good cell permeability and biocompatibility, the NA-ONOO probe was successfully applied to imaging and tracing exogenous and endogenous ONOO- in living cells and zebrafish. The probe NA-ONOO presents a new recognition group and a promising method for further investigating ONOO- in living systems.
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Affiliation(s)
- Fangyun Xin
- School of Science, Dalian Maritime University, Dalian 116026, PR China.
| | - Jiwei Zhao
- School of Science, Dalian Maritime University, Dalian 116026, PR China.
| | - Wei Shu
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, 255049, PR China
| | - Xiaoling Zhang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
| | - Xixian Luo
- School of Science, Dalian Maritime University, Dalian 116026, PR China.
| | - Ying Tian
- School of Science, Dalian Maritime University, Dalian 116026, PR China.
| | - Mingming Xing
- School of Science, Dalian Maritime University, Dalian 116026, PR China.
| | - Hong Wang
- School of Science, Dalian Maritime University, Dalian 116026, PR China.
| | - Yong Peng
- School of Science, Dalian Maritime University, Dalian 116026, PR China.
| | - Yong Tian
- College of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, PR China.
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2
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Wu Y, He C, Shen H. Selective neutrophil activation via a programmable stopped-flow injection approach: Multiple evidences of priming state of salivary polymorphonuclear neutrophils compared to circulatory polymorphonuclear neutrophils. Talanta 2021; 222:121449. [PMID: 33167199 DOI: 10.1016/j.talanta.2020.121449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/14/2020] [Accepted: 07/22/2020] [Indexed: 11/29/2022]
Abstract
Activated polymorphonuclear neutrophils play an important role in host defense system against invading pathogens via releasing reactive oxygen species through respiratory bursts. Nowadays, neutrophil activation process has been found to be modeled as a two-stages continuum from dormant to primed, and to fully activated. Although the differences of salivary and circulatory neutrophils have been investigated in various experimental designs, priming state of salivary polymorphonuclear neutrophils with respiratory burst has not been comprehensively studied. Here, for the first time so far, a programmable flow injection analysis based on Stop in Flow Cell operation mode has been applied to batch analyzing comparative study of neutrophil activation. The high-sensitivity luminol-dependent chemiluminescence assay has been employed with just 330 μL of cell suspension consumption per sample, and the process has been conducted rapidly and efficiently within 15 min to keep the neutrophils viability. ROS from either unstimulated or substimulated or stimulated salivary polymorphonuclear neutrophils, in comparison with those from autologous circulatory polymorphonuclear neutrophils, have been determined, together with further monitoring the impact of extracellular and intracellular calcium ion (Ca2+) on neutrophils ROS generation. Conclusively, the priming state of salivary polymorphonuclear neutrophils during activation has been testified from multiple aspects.
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Affiliation(s)
- Yuqi Wu
- Institute of Analytical Chemistry, Zhejiang University, 310058, China
| | - Chaoman He
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, China; Xiasha Hospital, Hangzhou, China
| | - Hong Shen
- Institute of Analytical Chemistry, Zhejiang University, 310058, China.
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3
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Therapeutic Anticoagulation with Argatroban and Heparins Reduces Granulocyte Migration: Possible Impact on ECLS-Therapy? Cardiovasc Ther 2020; 2020:9783630. [PMID: 32405324 PMCID: PMC7196999 DOI: 10.1155/2020/9783630] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 04/09/2020] [Indexed: 02/06/2023] Open
Abstract
Introduction Anticoagulants such as argatroban and heparins (low-molecular-weight and unfractionated) play an immense role in preventing thromboembolic complications in clinical practice. Nevertheless, they can also have a negative effect on the immune system. This study is aimed at investigating the influence of these substances on polymorphonuclear neutrophils (PMNs), whose nonspecific defense mechanisms can promote thrombogenesis. Methods Blood samples from 30 healthy volunteers were investigated, whereby PMNs were isolated by density gradient centrifugation and incubated with 0.8 μg/mL of argatroban, 1.0 U/mL of low-molecular-weight heparin (LMWH), 1.0 U/mL of unfractionated heparin (UFH), or without drug (control). A collagen-cell mixture was prepared and filled into 3D μ-slide chemotaxis chambers (IBIDI® GmbH, Germany). Stimulation was initiated by using a chemokine gradient of n-formyl-methionine-leucyl-phenylalanine (fMLP), and microscopic observation was conducted for 4.5 hours. The cells' track length and track straightness, as well as the number of attracted granulocytes, level of ROS (reactive oxygen species) production, and NET (neutrophil extracellular traps) formation, were analyzed and categorized into migration distances and time periods. Results All three anticoagulants led to significantly reduced PMN track lengths, with UFH having the biggest impact. The number of tracks observed in the UFH group were significantly reduced compared to the control group. Additionally, the UFH group demonstrated a significantly lower track straightness compared to the control. ROS production and NET formation were unaffected. Conclusion Our data provide evidence that anticoagulants have an inhibitory effect on the extent of PMN migration and chemotactic migration efficiency, thus indicating their potential immune-modulatory and prothrombotic effects.
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4
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Chen L, Cho MK, Wu D, Kim HM, Yoon J. Two-Photon Fluorescence Probe for Selective Monitoring of Superoxide in Live Cells and Tissues. Anal Chem 2019; 91:14691-14696. [DOI: 10.1021/acs.analchem.9b03937] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Liyan Chen
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Myoung Ki Cho
- Department of Chemistry and Energy Systems Research, Ajou University, Suwon 16499, Korea
| | - Di Wu
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Hwan Myung Kim
- Department of Chemistry and Energy Systems Research, Ajou University, Suwon 16499, Korea
| | - Juyoung Yoon
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
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5
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Liu C, Li Z, Yu C, Chen Y, Liu D, Zhuang Z, Jia P, Zhu H, Zhang X, Yu Y, Zhu B, Sheng W. Development of a Concise Rhodamine-Formylhydrazine Type Fluorescent Probe for Highly Specific and Ultrasensitive Tracing of Basal HOCl in Live Cells and Zebrafish. ACS Sens 2019; 4:2156-2163. [PMID: 31293155 DOI: 10.1021/acssensors.9b01001] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Hypochlorous acid (HOCl) has received special attention by virtue of its pivotal antimicrobial nature, and the appropriate amount of HOCl is beneficial to innate immunity of host to cope with microbial invasion. However, the uncontrollable accumulation of HOCl is implicated in many human diseases and even cancers. Thus, to determine its deeper biological functions, it is significantly important to specifically monitor intracellular HOCl in biosystems. Herein, we rationally designed a simple fluorescent probe FH-HA on the basis of the formylhydrazine recognition receptor and rhodamine B fluorophore. It is worth noting that the formylhydrazine moiety for the first time is adopted as the recognition receptor for specifically recognizing HOCl. Additionally, probe FH-HA also exhibited excellent performance in many areas including satisfactory water-solubility, high specificity, and excellent sensitivity. Notably, probe FH-HA could quickly respond to HOCl (within 3 s), which facilitates the tracing of transient HOCl. More importantly, probe FH-HA was capable of specifically tracing the fluctuations of endogenous HOCl in living cells and zebrafish, and it could monitor basal HOCl in cancer cells to distinguish cancer cells from normal ones.
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Affiliation(s)
- Caiyun Liu
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Zilu Li
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Chen Yu
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Yanan Chen
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Dongmei Liu
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Zihan Zhuang
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Pan Jia
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Hanchuang Zhu
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Xue Zhang
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Yamin Yu
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Baocun Zhu
- School of Water Conservancy and Environment, University of Jinan, Shandong Provincial Engineering
Technology Research Center for Ecological Carbon Sink and Capture
Utilization, Jinan 250022, China
| | - Wenlong Sheng
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
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6
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Zhang L, Abdullah R, Hu X, Bai H, Fan H, He L, Liang H, Zou J, Liu Y, Sun Y, Zhang X, Tan W. Engineering of Bioinspired, Size-Controllable, Self-Degradable Cancer-Targeting DNA Nanoflowers via the Incorporation of an Artificial Sandwich Base. J Am Chem Soc 2019; 141:4282-4290. [PMID: 30730715 PMCID: PMC6625512 DOI: 10.1021/jacs.8b10795] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In this article, we used an artificial DNA base to manipulate the formation of DNA nanoflowers (NFs) to easily control their sizes and functionalities. Nanoflowers have been reported as the noncanonical self-assembly of multifunctional DNA nanostructures, assembled from long DNA building blocks generated by rolling circle replication (RCR). They could be incorporated with myriad functional moieties. However, the efficacy of these DNA NFs as potential nanocarriers delivering cargo in biomedicine is limited by the bioavailability and therapeutic efficacy of their cargo. Here we report the incorporation of metal-containing artificial analogues into DNA strands to control the size and the functions of NFs. We have engineered bioinspired, size-controllable, self-degradable cancer-targeting DNA nanoflowers (Sgc8-NFs-Fc) via the incorporation of an artificial sandwich base. More specifically, the introduction of a ferrocene base not only resulted in the size controllability of Sgc8-NFs-Fc from 1000 to 50 nm but also endowed Sgc8-NFs-Fc with self-degradability in the presence of H2O2 via Fenton's reaction. In vitro experiments confirmed that Sgc8-NFs-Fc/Dox could be selectively taken up by protein tyrosine kinase 7 (PTK7)-positive cancer cells and subsequently cleaved via Fenton's reaction, resulting in rapid release kinetics, nuclear accumulation, and enhanced cytotoxicity of their cargo. In vivo experiments further confirmed that Sgc8-NFs-Fc has good tumor-targeting ability and could significantly improve the therapeutic efficacy of doxorubicin in a xenograft tumor model. On the basis of their tunable size and on-demand drug release kinetics upon H2O2 stimulation, the Sgc8-NFs-Fc nanocarriers possess promising potential in drug delivery.
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Affiliation(s)
- Lili Zhang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Razack Abdullah
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, and College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoxiao Hu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Huarong Bai
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Huanhuan Fan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Lei He
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Hao Liang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Jianmei Zou
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Yanlan Liu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Yang Sun
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, and College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaobing Zhang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Weihong Tan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, and College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
- Department of Chemistry and Department of Physiology and Functional Genomics, Center for Research at the Bio/Nano Interface, Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200, United States
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7
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Yao S, Ma C, Lu Y, Wei X, Feng X, Miao P, Yang G, Zhang J, Yan M, Yu J. A FRET-based ratiometric two-photon fluorescent probe for superoxide anion detection and imaging in living cells and tissues. Analyst 2019; 144:1704-1710. [PMID: 30657475 DOI: 10.1039/c8an02196a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The superoxide anion (O2˙-) plays a crucial role in several physiological processes and many human diseases. Developing new methods for O2˙- detection in biological systems is very important. A FRET-based two-photon (TP) fluorescent probe with a ratiometric signal, TFR-O, was developed. A naphthalene derivative based TP fluorescent group was selected as the energy donor group, and a rhodol fluorescent group was chosen as the energy acceptor; the trifluoromethanesulfonate group was chosen as the recognition moiety. After reacting with O2˙-, the recognition moiety was removed and the fluorophore was released, leading to a fluorescence intensity decrease at the wavelength of 425 nm and a significant enhancement of the fluorescence intensity at 550 nm. The fluorescence intensity ratio between 550 and 425 nm (I550/I425) varied from 0.15 to 6.72, with the O2˙- concentration increasing from 0 to 50 μM. The detection limit of the TFR-O was 83 nM. Moreover, TFR-O was applied for detecting and imaging O2˙- in cells and liver tissues.
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Affiliation(s)
- Shan Yao
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
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8
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Duan LY, Wang YJ, Liu JW, Wang YM, Li N, Jiang JH. Tumor-selective catalytic nanosystem for activatable theranostics. Chem Commun (Camb) 2018; 54:8214-8217. [PMID: 29979458 DOI: 10.1039/c8cc03922d] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A novel tumor-selective catalytic nanosystem that enables efficient chemodynamic therapy (CDT) and activatable fluorescence imaging in H2O2-rich tumor microenvironments has been developed.
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Affiliation(s)
- Lu-Ying Duan
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
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9
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Lu X, Chen Z, Dong X, Zhao W. Water-Soluble Fluorescent Probe with Dual Mitochondria/Lysosome Targetability for Selective Superoxide Detection in Live Cells and in Zebrafish Embryos. ACS Sens 2018; 3:59-64. [PMID: 29336143 DOI: 10.1021/acssensors.7b00831] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel water-soluble fluorescein-based fluorescent probe for superoxide detection was developed. The probe is fairly stable under neutral and acidic conditions. It can be used to detect superoxide both in solution with the detection limit of 2.2 μM and in living cells. Cell imaging experiments indicated that such a probe displayed good cell penetration and O2•- could be detected with PMA-stimulated HepG2 cells in both mitochondria and lysosome. Such a probe is the first dual mitochondria- and lysosome- targetable fluorescent chemodosimeter. Additionally, O2•- in intact live zebrafish embryos was successfully visualized under PMA-stimulated conditions, and the possible detection mechanism was studied as well.
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Affiliation(s)
- Xiuhong Lu
- School
of Pharmacy Fudan University, 826 Zhangheng Road, Shanghai, 201203, P. R. China
- PET
Center,Huashan Hospital, Fudan University, 518 East Wuzhong Road, Shanghai 200235, P. R. China
| | - Zhongjian Chen
- Shanghai Dermatology Hospital, Shanghai, 200443, P. R. China
| | - Xiaochun Dong
- School
of Pharmacy Fudan University, 826 Zhangheng Road, Shanghai, 201203, P. R. China
| | - Weili Zhao
- School
of Pharmacy Fudan University, 826 Zhangheng Road, Shanghai, 201203, P. R. China
- Key
Laboratory for Special Functional Material of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China
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10
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Liu F, Bing T, Shangguan D, Zhao M, Shao N. Ratiometric Fluorescent Biosensing of Hydrogen Peroxide and Hydroxyl Radical in Living Cells with Lysozyme–Silver Nanoclusters: Lysozyme as Stabilizing Ligand and Fluorescence Signal Unit. Anal Chem 2016; 88:10631-10638. [DOI: 10.1021/acs.analchem.6b02995] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fang Liu
- College
of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Tao Bing
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Dihua Shangguan
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Meiping Zhao
- Beijing
National Laboratory for Molecular Sciences, College of Chemistry and
Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Na Shao
- College
of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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11
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Liu C, Chen W, Qing Z, Zheng J, Xiao Y, Yang S, Wang L, Li Y, Yang R. In Vivo Lighted Fluorescence via Fenton Reaction: Approach for Imaging of Hydrogen Peroxide in Living Systems. Anal Chem 2016; 88:3998-4003. [DOI: 10.1021/acs.analchem.6b00267] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Changhui Liu
- School
of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, People’s Republic of China
- Department
of Chemistry and Environmental Engineering, Hunan City University, Yiyang 413000, People’s Republic of China
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Weiju Chen
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Zhihe Qing
- School
of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, People’s Republic of China
| | - Jing Zheng
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Yue Xiao
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Sheng Yang
- School
of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, People’s Republic of China
| | - Lili Wang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Yinhui Li
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Ronghua Yang
- School
of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, People’s Republic of China
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
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12
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Li P, Zhang W, Li K, Liu X, Xiao H, Zhang W, Tang B. Mitochondria-Targeted Reaction-Based Two-Photon Fluorescent Probe for Imaging of Superoxide Anion in Live Cells and in Vivo. Anal Chem 2013; 85:9877-81. [DOI: 10.1021/ac402409m] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ping Li
- College of Chemistry, Chemical
Engineering and Materials Science, Engineering Research
Center of Pesticide and Medicine Intermediate Clean Production, Ministry
of Education, Key Laboratory of Molecular and Nano Probes, Ministry
of Education, Shandong Normal University, Jinan, Shandong 250014, People’s Republic of China
| | - Wen Zhang
- College of Chemistry, Chemical
Engineering and Materials Science, Engineering Research
Center of Pesticide and Medicine Intermediate Clean Production, Ministry
of Education, Key Laboratory of Molecular and Nano Probes, Ministry
of Education, Shandong Normal University, Jinan, Shandong 250014, People’s Republic of China
| | - Kexiang Li
- College of Chemistry, Chemical
Engineering and Materials Science, Engineering Research
Center of Pesticide and Medicine Intermediate Clean Production, Ministry
of Education, Key Laboratory of Molecular and Nano Probes, Ministry
of Education, Shandong Normal University, Jinan, Shandong 250014, People’s Republic of China
| | - Xiao Liu
- College of Chemistry, Chemical
Engineering and Materials Science, Engineering Research
Center of Pesticide and Medicine Intermediate Clean Production, Ministry
of Education, Key Laboratory of Molecular and Nano Probes, Ministry
of Education, Shandong Normal University, Jinan, Shandong 250014, People’s Republic of China
| | - Haibin Xiao
- College of Chemistry, Chemical
Engineering and Materials Science, Engineering Research
Center of Pesticide and Medicine Intermediate Clean Production, Ministry
of Education, Key Laboratory of Molecular and Nano Probes, Ministry
of Education, Shandong Normal University, Jinan, Shandong 250014, People’s Republic of China
| | - Wei Zhang
- College of Chemistry, Chemical
Engineering and Materials Science, Engineering Research
Center of Pesticide and Medicine Intermediate Clean Production, Ministry
of Education, Key Laboratory of Molecular and Nano Probes, Ministry
of Education, Shandong Normal University, Jinan, Shandong 250014, People’s Republic of China
| | - Bo Tang
- College of Chemistry, Chemical
Engineering and Materials Science, Engineering Research
Center of Pesticide and Medicine Intermediate Clean Production, Ministry
of Education, Key Laboratory of Molecular and Nano Probes, Ministry
of Education, Shandong Normal University, Jinan, Shandong 250014, People’s Republic of China
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13
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Lu HW, He GN, Ma H, Wang JK. Ketamine reduces inducible superoxide generation in human neutrophils in vitro by modulating the p38 mitogen-activated protein kinase (MAPK)-mediated pathway. Clin Exp Immunol 2010; 160:450-6. [PMID: 20345980 DOI: 10.1111/j.1365-2249.2010.04111.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Many cellular stresses and inflammatory stimuli can activate p38 mitogen-activated protein kinase (MAPK), a serine/threonine kinase in the MAPK family. The different stimuli act via different receptors or signalling pathways to induce phosphorylation of the cytosolic protein p47(phox), one subunit of the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. Formyl-methionyl-leucyl-phenylalanine (fMLP) has been shown to induce the p38 MAPK phosphorylation during the respiratory burst in human neutrophils. Here, we show that treatment with S(+)-ketamine or R(-)-ketamine at different concentrations (50, 100, 200, 400 microM) reduced fMLP-induced superoxide anion generation and p47(phox) phosphorylation in neutrophils in a concentration-dependent manner (y = -0.093x + 93.35 for S(+)-ketamine and y = -0.0982x + 95.603 for R(-)-ketamine, respectively). While treatment with 50 microM ketamine inhibited fMLP-induced superoxide generation by 10%, treatment with 400 microM S(+)-ketamine and R(-)-ketamine reduced fMLP-induced superoxide generation to 60.5 +/- 8.3% and 60.0 +/- 8.5%, respectively, compared with that in neutrophils treated with fMLP alone. Furthermore, treatment with ketamine down-regulated both fMLP-induced p47(phox) and isoproterenol-induced p38 MAPK phosphorylation and superoxide production. Interestingly, treatment with SB203580, the p38 MAPK inhibitor, also mitigated fMLP-induced superoxide anion generation and p38 MAPK and p47(phox) phosphorylation as well as apoptosis in a concentration-dependent fashion in neutrophils. Therefore, ketamine racemes inhibited fMLP-induced superoxide anion generation and p47(phox) phosphorylation by modulating fMLP-mediated p38 MAPK activation in neutrophils.
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Affiliation(s)
- Huang-Wei Lu
- Department of Anesthesiology, First Affiliated Hospital of China Medical University, Heping District, Shenyang, China.
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14
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Yuan L, Lin W, Song J. Ratiometric fluorescent detection of intracellular hydroxyl radicals based on a hybrid coumarin–cyanine platform. Chem Commun (Camb) 2010; 46:7930-2. [DOI: 10.1039/c0cc02390f] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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15
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Xu K, Liu X, Tang B, Yang G, Yang Y, An L. Design of a phosphinate-based fluorescent probe for superoxide detection in mouse peritoneal macrophages. Chemistry 2007; 13:1411-6. [PMID: 17072931 DOI: 10.1002/chem.200600497] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
3',6'-Bis(diphenylphosphinyl)fluorescein (PF-1) was synthesized as a highly selective and sensitive fluorescent probe for imaging O(2) (.-) in living cells. The design strategy for the probe was based on the nucleophilic mechanism of O(2) (.-) to mediate deprotection of this probe to give fluorescein. Upon reaction with O(2) (.-), the probe exhibits a strong fluorescence response and high selectivity for O(2) (.-) over other reactive oxygen species and some biological compounds. The phosphinate-based probe, as a new fluorescent reagent, is cell-permeable and can detect micromolar changes of O(2) (.-) concentrations by using confocal microscopy in living cells. The unique combination of good selectivity, high sensitivity, good water solubility, and rapid reactivity establishes the potential value of the probe for facilitating investigations of the generation, metabolism, and mechanisms of superoxide-mediated cellular homeostasis and injury.
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Affiliation(s)
- Kehua Xu
- College of Chemistry, Chemical Engineering and Materials, Science, Shandong Normal University, Jinan 250014, China
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16
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Xu K, Liu X, Tang B. A phosphinate-based red fluorescent probe for imaging the superoxide radical anion generated by RAW264.7 macrophages. Chembiochem 2007; 8:453-8. [PMID: 17238211 DOI: 10.1002/cbic.200600392] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
4',9'-Bis(diphenylphosphinyl)naphthofluorescein (PNF-1) has been designed and synthesized as a highly selective, sensitive, cell-permeable, red fluorescent probe for detecting O(2) (.-) in biological systems. The design strategy for the probe is based on the nucleophilic mechanism of O(2) (.-) to mediate deprotection of the probe to naphthofluorescein, the emission spectrum of which is just in the spectral region of low background fluorescence interference in biological systems. Upon treatment with O(2) (.-), the probe exhibits a strong fluorescence response and high selectivity for O(2) (.-), rather than other reactive oxygen species or biological compounds. A linear calibration curve for PNF-1 showed a detection limit of 0.1 nM O(2) (.-). This new type of fluorescent probe allows nanomolar changes in O(2) (.-) concentrations in living cells to be detected by confocal microscopy.
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Affiliation(s)
- Kehua Xu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China
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17
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Babior BM. The respiratory burst oxidase. ADVANCES IN ENZYMOLOGY AND RELATED AREAS OF MOLECULAR BIOLOGY 2006; 65:49-95. [PMID: 1570769 DOI: 10.1002/9780470123119.ch2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Sbarra and Karnovsky were the first to present evidence suggesting the presence in phagocytes of a special enzyme designed to generate reactive oxidants for purposes of host defense. In the years since their report appeared, a great deal has been learned about this enzyme, now known as the respiratory burst oxidase. It has been found to be a plasma membrane-bound heme- and flavin-containing enzyme, dormant in resting cells, that catalyzes the one-electron reduction of oxygen to O2- at the expense of NADPH: O2 + NADPH----O2- + NADP+ + H+ Its behavior in whole cells and its response to various activating stimuli have been described in detail, although important insights continue to emerge, as for example a very interesting new series of observations on differences in oxidase activation patterns between suspended and adherent cells. The enzyme has been shown by biochemical and genetic studies to consist of at least six components. In the resting cell, three of these components are in the cytosol and three in the plasma membrane, but when the cell passes from its resting to its activated state the cytosolic components are all transferred to the plasma membrane, presumably assembling the oxidase. Of the components initially bound to the membrane, two constitute cytochrome b558, a heme protein characteristic of the respiratory burst oxidase, and the third may represent an oxidase flavoprotein. With regard to the cytosolic components, one is a phosphoprotein and another is the NADPH-binding component, possibly a second oxidase flavoprotein. The nature of the third (p67phox) is a puzzle. Four of the six oxidase components have now been cloned and sequenced. These findings only scratch the surface, however, and many questions remain. How many oxidase components, for example, remain to be discovered, and how do they fit together to form the active enzyme? How is the route of activation of the oxidase integrated into the general signal transduction systems of the cell? How did the oxidase come to be? Could there be a widespread system that generates small amounts of O2- as an intercellular signaling molecule, as recent work is beginning to suggest, and did the ever-destructive respiratory burst oxidase arise from that innocuous system as the creation of some evolutionary Frankenstein--an oxidase from hell? Finally, will it be possible to develop drugs that specifically block the respiratory burst oxidase, and will such drugs prove to be clinically useful as anti-inflammatory agents?(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- B M Babior
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, California
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18
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Adachi Y, Kindzelskii AL, Petty AR, Huang JB, Maeda N, Yotsumoto S, Aratani Y, Ohno N, Petty HR. IFN-gamma primes RAW264 macrophages and human monocytes for enhanced oxidant production in response to CpG DNA via metabolic signaling: roles of TLR9 and myeloperoxidase trafficking. THE JOURNAL OF IMMUNOLOGY 2006; 176:5033-40. [PMID: 16585600 DOI: 10.4049/jimmunol.176.8.5033] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Macrophages and monocytes are activated by CpG DNA motifs to produce NO, which is enhanced dramatically by IFN-gamma. We hypothesize that synergistic cellular responses to IFN-gamma and CpG DNA are due to cross-talk between metabolic signaling pathways of leukocytes. Adherent RAW264.7 macrophages and human monocytes exhibited NAD(P)H autofluorescence oscillation periods of approximately 20 s. IFN-gamma increased the oscillatory amplitude, which was required for CpG DNA-mediated metabolic changes. These alterations in metabolic dynamics required the appropriate combinations of murine/human TLR9 and murine/human-specific CpG DNA. Other factors that also promoted an increase in metabolic oscillatory amplitude could substitute for IFN-gamma. Because recent studies have shown that the metabolic frequency is coupled to the hexose monophosphate shunt, and the amplitude is coupled to the peroxidase cycle, we tested the hypothesis that myeloperoxidase (MPO) participates in IFN-gamma priming for oxidant production. MPO inhibitors blocked cell responses to IFN-gamma and CpG DNA. In the absence of IFN-gamma exposure, the effects of CpG DNA could be duplicated by MPO addition to cell samples. Moreover, monocytes from MPO knockout mice were metabolically unresponsive to IFN-gamma and CpG DNA. NAD(P)H frequency doubling responses due to CpG DNA were blocked by an inhibitor of the hexose monophosphate shunt. Because NAD(P)H participates in electron trafficking to NO and superoxide anions, we tested oxidant production. Although CpG DNA alone had no effect, IFN-gamma plus CpG enhanced NO and reactive oxygen metabolite release compared with IFN-gamma treatment alone. We suggest that amplitude and frequency modulation of cellular metabolic oscillations contribute to intracellular signaling synergy.
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Affiliation(s)
- Yoshiyuki Adachi
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Hachioji, Tokyo, Japan
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Olsen LF, Kummer U, Kindzelskii AL, Petty HR. A model of the oscillatory metabolism of activated neutrophils. Biophys J 2003; 84:69-81. [PMID: 12524266 PMCID: PMC1302594 DOI: 10.1016/s0006-3495(03)74833-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2002] [Accepted: 09/04/2002] [Indexed: 11/18/2022] Open
Abstract
We present a two-compartment model to explain the oscillatory behavior observed experimentally in activated neutrophils. Our model is based mainly on the peroxidase-oxidase reaction catalyzed by myeloperoxidase with melatonin as a cofactor and NADPH oxidase, a major protein in the phagosome membrane of the leukocyte. The model predicts that after activation of a neutrophil, an increase in the activity of the hexose monophosphate shunt and the delivery of myeloperoxidase into the phagosome results in oscillations in oxygen and NAD(P)H concentration. The period of oscillation changes from >200 s to 10-30 s. The model is consistent with previously reported oscillations in cell metabolism and oxidant production. Key features and predictions of the model were confirmed experimentally. The requirement of the hexose monophosphate pathway for 10 s oscillations was verified using 6-aminonicotinamide and dexamethasone, which are inhibitors of glucose-6-phosphate dehydrogenase. The role of the NADPH oxidase in promoting oscillations was confirmed by dose-response studies of the effect of diphenylene iodonium, an inhibitor of the NADPH oxidase. Moreover, the model predicted an increase in the amplitude of NADPH oscillations in the presence of melatonin, which was confirmed experimentally. Successful computer modeling of complex chemical dynamics within cells and their chemical perturbation will enhance our ability to identify new antiinflammatory compounds.
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Affiliation(s)
- Lars F Olsen
- European Media Laboratory, Schloss-Wolfsbrunnenweg 33, D-69118 Heidelberg, Germany.
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20
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Wanten G, van Emst-de Vries S, Naber T, Willems P. Nutritional lipid emulsions modulate cellular signaling and activation of human neutrophils. J Lipid Res 2001. [DOI: 10.1016/s0022-2275(20)31667-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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21
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Rais S, Pédruzzi E, Dang MC, Giroud JP, Hakim J, Périanin A. Priming of phosphatidic acid production by staurosporine in f-Met-Leu-Phe-stimulated human neutrophils--correlation with respiratory burst. Cell Signal 1998; 10:121-9. [PMID: 9481487 DOI: 10.1016/s0898-6568(97)00116-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Staurosporine, a microbial alkaloid known as a potent though non specific PKC inhibitor, enhances the production of superoxide anion (respiratory burst) of human polymorphonuclear leukocytes (PMN) stimulated by chemoattractants such as f-Met-Leu-Phe (fMLP). To gain insights into the mechanisms of this priming, we analysed staurosporine effects on formation of second messengers issued from phospholipase D (PLD), i.e., phosphatidic acid (PA) and its dephosphorylated form, diglycerides (DG). PA and DG were measured by two methods, in mass and after the labelling of PMN with a phosphatidylcholine precursor, [3H]-1-O-alkyl-2-lyso-3-phosphatidylcholine. Treatment of labelled PMN with low concentrations of staurosporine (12.5 and 50 nM) which prime respiratory burst had no significant effect on basal amounts of tritiated PA and DG, but potentiated fMLP-mediated formation of [3H]PA and phosphatidylethanol (PEt) pointing to a priming of PLD activity. PA mass in resting PMN increased (approximately 80 +/- 7%) in the presence of high drug concentrations only (250-500 nM), with no change in basal DAG mass. Low staurosporine concentrations (6.25-25 nM) markedly potentiated PA mass formation induced by fMLP and positive correlation (R = 0.95) was found between enhanced superoxide formation and generation of PA but not DG. Furthermore, cytochalasin B, which is known to prime PA production induced by fMLP, synergised the priming of respiratory burst by staurosporine, which further suggests a functional role of PA. In contrast to staurosporine, the more selective PKC inhibitor GF109203X neither stimulated PLD nor primed fMLP-induced PLD or respiratory burst. These data indicate that priming of fMLP-mediated PMN respiratory burst by staurosporine correlates with PA formation. This priming may be linked to alteration of early signalling events upstream of PLD rather than to feedback inhibition of PKC.
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Affiliation(s)
- S Rais
- Laboratoire d'Hématologie, INSERM U294, Hôpital Bichat, Paris, France
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22
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Tronchère H, Planat V, Record M, Tercé F, Ribbes G, Chap H. Phosphatidylcholine turnover in activated human neutrophils. Agonist-induced cytidylyltransferase translocation is subsequent to phospholipase D activation. J Biol Chem 1995; 270:13138-46. [PMID: 7768909 DOI: 10.1074/jbc.270.22.13138] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Phosphatidylcholine synthesis and degradation are tightly regulated to assure a constant amount of the phospholipid in cellular membranes. The chemotactic peptide fMLP and the phorbol ester, phorbol 12-myristate 13-acetate, are known to stimulate phosphatidylcholine degradation by phospholipase D in human neutrophils. fMLP alone triggered phosphatidylcholine breakdown into phosphatidic acid, but did not stimulate phosphatidylcholine synthesis or activation of the rate-limiting enzyme CTP:phosphocholine cytidylyltransferase. Adding cytochalasin B to fMLP led to some conversion of phosphatidic acid into diglyceride, and fMLP was then able to trigger choline incorporation into phosphatidylcholine, and cytidylyltransferase translocation from cytosol to membranes. Inhibition of phosphatidyl-choline-phospholipase D activation with tyrphostin led to inhibition of choline incorporation. Therefore, phosphatidic acid-derived diglyceride but not phosphatidic acid alone was effective to promote cytidylyltransferase translocation. With phorbol 12-myristate 13-acetate as agonist, and by selective labeling of phosphatidylinositol and phosphatidylcholine, we demonstrated that only phosphatidylcholine-derived diglyceride participated in cytidylyltransferase translocation. Oleic acid stimulated phosphatidylcholine synthesis, but induced a weak increase in diglyceride and a slight cytidylyltransferase translocation, and did not stimulate phospholipase D activity. Our data established that only diglyceride derived from phosphatidylcholine degradation by the phospholipase D/phosphatidate phosphatase pathway are required for agonist-induced cytidylyltransferase translocation and subsequent choline incorporation into phosphatidylcholine.
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Affiliation(s)
- H Tronchère
- Institut National de la Santé et de la Recherche Médicale, Unité 326, Phospholipides Membranaires, Signalisation Cellulaire et Lipoprotéines, Hôpital Purpan, Toulouse, France
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23
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Wong K, Li XB, Hunchuk N. N-acetylsphingosine (C2-ceramide) inhibited neutrophil superoxide formation and calcium influx. J Biol Chem 1995; 270:3056-62. [PMID: 7852386 DOI: 10.1074/jbc.270.7.3056] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Ceramide, a product arising from sphingomyelinase activity, has been shown to act as an intracellular second messenger in effecting growth inhibition, cellular differentiation, and apoptosis. In the present study, the relative effects of cell-permeable ceramides, N-acetylsphingosine (C2-ceramide) and N-hexanoylsphingosine (C6-ceramide), on neutrophil responses were measured. When cells were activated with fMet-Leu-Phe, C2-ceramide both potentiated (< 1 microM) and inhibited (> 1 microM) superoxide generation. C2- and C6-ceramide inhibited phorbol ester-induced superoxide release from neutrophils at IC50 values of 5 and 120 microM, respectively. C2-ceramide had no effect on semipurified protein kinase C activity. Neither ceramide affected significantly the general level of phosphorylated proteins in phorbol ester-treated cells. C2-ceramide (1-20 microM) alone did not change cytosolic free Ca2+ levels but inhibited Ca2+ and Mn2+ influx in fMet-Leu-Phe-activated neutrophils. In contrast, sphingosine enhanced Ca2+ entry; thus, ceramide conversion to sphingosine was not significant. Unlike C2-ceramide, C2-dihydroceramide failed to block superoxide generation or Ca2+ influx. Preincubation of cells with 10 nM okadaic acid reversed slightly the effects of C2-ceramide. Calyculin A, tautomycin, and much higher concentrations of okadaic acid inhibited agonist-induced Ca2+ influx. We postulate that C2-ceramide may inhibit neutrophil superoxide release by activation of type 2A protein phosphatases. Results suggest that protein phosphatase type 1 up-regulates Ca2+ entry, whereas type 2A (or a ceramide-activated subtype) forestalls Ca2+ entry by inactivating a calcium influx factor.
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Affiliation(s)
- K Wong
- Department of Pharmacology and Therapeutics, University of Calgary, Alberta, Canada
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24
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Zhang L, Gay J, English D, Andersen B. Neutrophil Priming Mechanisms of Sulfolipid-I and N-Formyl-Methionyl-Leucyl-Phenylalanine. J Biomed Sci 1994; 1:253-262. [PMID: 11725034 DOI: 10.1007/bf02253310] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The principal sulfatide of virulent Mycobacterium tuberculosis, sulfolipid-I (SL-I), both directly stimulates neutrophil superoxide (O(-)(2)) release and, at substimulatory concentrations, primes these cells for markedly enhanced oxidative responsiveness to other stimuli. The present study was undertaken to clarify the priming mechanisms by comparing cellular events following priming doses of SL-I with those following priming with N-formyl-methionyl-leucylphenylalanine (FMLP). We compared the involvement of the calcium cation (Ca(2+)), as well as membrane protein kinase C (PKC) activity and the translocation of NADPH oxidase-cytosolic cofactor effected by priming levels of the two agonists. The investigation led to two important conclusions. First, we clearly demonstrate that priming by both SL-I and FMLP results from activation of cellular processes that are not involved in direct oxidative activation. For example, whereas direct induction of O(-)(2) generation by FMLP and SL-I required increases in intracellular Ca(2+), an increase in intracellular calcium concentration ([Ca(2+)](i)) above basal levels was not required for priming. Second, we identified key differences in the cellular responses to priming doses of SL-I and FMLP. Whereas increased membrane PKC activity caused by priming doses of FMLP was only partially blocked by chelation of intracellular Ca(2+), Ca(2+) chelation completely inhibited the increase in membrane PKC activity caused by SL-I. NADPH oxidase-cytosolic factor translocation to plasma membranes was completely blocked by pertussis toxin when priming doses of SL-I were used. This guanine-nucleotide-binding protein inhibitor had no effect on FMLP-dependent translocation of the oxidase cofactors. The comparative approach introduced in this report provides a valuable and novel method to discern the complex interactions of various cellular processes that regulate the state of activation of stimulated cells. Copyright 1994 S. Karger AG, Basel
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Affiliation(s)
- L. Zhang
- Departments of Medicine and Microbiology/Immunology, University of Illinois at Chicago, College of Medicine and the West Side VA Medical Center, Chicago, Ill., USA
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25
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Leino L, Hurttia H, Peltonen E. Diacylglycerol in peripheral blood neutrophils from patients with localized juvenile periodontitis. J Periodontal Res 1994; 29:334-8. [PMID: 7799214 DOI: 10.1111/j.1600-0765.1994.tb01231.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Neutrophils from patients with localized juvenile periodontitis (LJP) show several functional abnormalities. Recently, it has become increasingly apparent that the reason for these changes lies in part at the post receptor level of cellular metabolism. In this study we have analyzed intracellular diacylglycerol (DAG), a second messenger and an endogenous activator of protein kinase C, in unstimulated and agonist-stimulated neutrophils, from five LJP patients showing a chemotaxis defect and matched normal individuals. No difference was observed in the basal cellular DAG between the two groups. In neutrophils from LJP patients the DAG levels increased by 67% and 111% from the basal level following stimulation with N-formyl-methionyl-leucyl-phenylalanine (FMLP) and unopsonized zymosan particles, respectively, while in control cells the mean increases were 36% and 65%, respectively. Incubation with serum-opsonized zymosan particles produced an identical rise in DAG in both groups. These data indicate that the stimulation of receptors for FMLP and unopsonized zymosan may produce an enhanced accumulation of DAG in neutrophils from LJP patients. In addition to DAG mass analysis, we determined the effect of R59022, a DAG-kinase inhibitor, on zymosan-stimulated luminol-amplified chemiluminescence (CL) of neutrophils. In control cells R59022 significantly enhanced unopsonized zymosan induced CL, but it had no effect on cells from LJP patients, suggesting a possible change in the regulation of DAG-kinase in LJP.
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Affiliation(s)
- L Leino
- Department of Hematology, Turku University Central Hospital, Finland
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26
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Abstract
PC hydrolysis by PLA2, PLC or PLD is a widespread response elicited by most growth factors, cytokines, neurotransmitters, hormones and other extracellular signals. The mechanisms can involve G-proteins, PKC, Ca2+ and tyrosine kinase activities. Although an agonist-responsive cytosolic PLA2 has been purified, cloned and sequenced, the agonist-responsive form(s) of PC-PLC has not been identified and no form of PC-PLD has been purified or cloned. Regulation of PLA2 by Ca2+ and MAPK is well established and involves membrane translocation and phosphorylation, respectively. PKC regulation of the enzyme in intact cells is probably mediated by MAPK. The question of G-protein control of PLA2 remains controversial since the nature of the G-protein is unknown and it is not established that its interaction with the enzyme is direct or not. Growth factor regulation of PLA2 involves tyrosine kinase activity, but not necessarily PKC. It may be mediated by MAPK. The physiological significance of PLA2 activation is undoubtedly related to the release of AA for eicosanoid production, but the LPC formed may have actions also. There is much evidence that PKC regulates PC-PLC and PC-PLD and this is probably a major mechanism by which agonists that promote PI hydrolysis secondarily activate PC hydrolysis. Since no agonist-responsive forms of either phospholipase have been isolated, it is not clear that PKC exerts its effects directly on the enzymes. Although it is assumed that a phosphorylation mechanism is involved, this may not be the case, and regulation may be by protein-protein interactions. G-protein control of PC-PLD is well-established, although, again, it has not been demonstrated that this is direct, and the nature of the G-protein(s) involved is unknown. In some cell types, there is evidence of the participation of a soluble protein, which may be a low Mr GTP-binding protein. What role this plays in the activation of PC-PLD is obscure. Agonist activation of PC hydrolysis in cells is usually Ca(2+)-dependent, but the step at which Ca2+ is involved is unclear, since PC-PLD and PC-PLC per se are not influenced by physiological concentrations of the ion. Most growth factors promote PC hydrolysis and this is mainly due to activation of PKC as a result of PI breakdown. However, in some cases, PC breakdown occurs in the absence of PI hydrolysis, implying another mechanism that does not involve PI-derived DAG.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- J H Exton
- Howard Hughes Medical Institute, Nashville, TN
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27
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Suchard S, Nakamura T, Abe A, Shayman J, Boxer L. Phospholipase D-mediated diradylglycerol formation coincides with H2O2 and lactoferrin release in adherent human neutrophils. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(17)37160-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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28
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Perry DK, Stevens VL, Widlanski TS, Lambeth JD. A novel ecto-phosphatidic acid phosphohydrolase activity mediates activation of neutrophil superoxide generation by exogenous phosphatidic acid. J Biol Chem 1993. [DOI: 10.1016/s0021-9258(19)74392-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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29
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Lederer ED, Jacobs AA, McLeish KR. Desensitization by protein kinase C activation differentially uncouples formyl peptide receptors from effector enzymes in HL-60 granulocytes. Cell Signal 1993; 5:735-45. [PMID: 8130077 DOI: 10.1016/0898-6568(93)90034-j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The hypothesis that protein kinase C (PKC) participates in agonist-mediated desensitization of formyl peptide receptors in HL-60 granulocytes was tested. fMet-Leu-Phe and leukotriene B4(LTB4) produced homologous desensitization of agonist-stimulated intracellular calcium transients. Pre-treatment with the PKC activator, phorbol myristate acetate (PMA; 10 nM), abolished both fMet-Leu-Phe and LTB4-stimulated calcium transients. Membranes prepared from control HL-60 granulocytes (NM) or cells treated with 10 nM PMA (PMA-M) demonstrated increased formyl peptide receptor and G protein density, as determined by radioligand binding and pertussis toxin- and cholera toxin-catalysed ADP ribosylation. fMet-Leu-Phe stimulation of guanosine 5'-[gamma-thio]-triphosphate (GTP gamma S) binding and GTP hydrolysis and GDP inhibition of fMet-Leu-Phe binding were not different between NM and PMA-M. Pre-treatment with 10 nM PMA did not inhibit subsequent fMet-Leu-Phe-stimulated superoxide generation or phospholipase D activation. We conclude that PKC desensitizes fMet-Leu-Phe-stimulated phospholipase C, but not phospholipase D, responses and that PKC activation does not mediate agonist-induced desensitization of formyl peptide receptors.
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Affiliation(s)
- E D Lederer
- Department of Medicine, University of Louisville, KY 40292
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30
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Qualliotine-Mann D, Agwu D, Ellenburg M, McCall C, McPhail L. Phosphatidic acid and diacylglycerol synergize in a cell-free system for activation of NADPH oxidase from human neutrophils. J Biol Chem 1993. [DOI: 10.1016/s0021-9258(20)80462-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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31
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Bauldry S, Elsey K, Bass D. Activation of NADPH oxidase and phospholipase D in permeabilized human neutrophils. Correlation between oxidase activation and phosphatidic acid production. J Biol Chem 1992. [DOI: 10.1016/s0021-9258(19)74017-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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32
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Caselli E, Bellini F, Ponzin D, Baricordi OR, Bruni A. Role of protein kinase C in the phosphatidylserine-induced inhibition of DNA synthesis in blood mononuclear cells. IMMUNOPHARMACOLOGY 1992; 24:191-201. [PMID: 1336010 DOI: 10.1016/0162-3109(92)90075-n] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The mechanism of immunosuppressant activity of phosphatidylserine has been studied in peripheral blood mononuclear cells depleted or not of monocytes. After the addition of phosphatidylserine, mass determinations and uptake of labeled compound demonstrate its transfer into the cells. Phosphatidylserine incorporation causes a 2.5-fold increase of membrane-bound protein kinase C activity. The activation of translocated enzyme is indicated by the inhibition of phosphoinositide hydrolysis, and early feedback effect induced by activated protein kinase C. This action of phosphatidylserine is reproduced by tetradecanoylphorbolacetate and is prevented by the protein kinase C inhibitor, staurosporine. Consistently, phosphatidylserine (8 nmol/10(6) cells) decreases by 46% the production of inositol phosphates in cells responding to phytohemagglutinin. The decrease of phosphoinositide signal pathway as well as the inhibition of mitogen-induced DNA synthesis are produced at the same phosphatidylserine concentration and are equally manifest in total mononuclear cells or in preparations depleted of monocytes. However, only in the presence of monocytes does tetradecanoylphorbolacetate enhance the action of phospholipid, decreasing its IC50 from 13-15 microM to 7 microM. Thus, the data suggest that a reaction driven by protein kinase-C and a factor released by activated monocytes are involved in the phosphatidylserine-induced inhibition of lymphocyte DNA synthesis.
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Affiliation(s)
- E Caselli
- Fidia Research Laboratories, Abano Terme, Padua, Italy
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33
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The translocation of respiratory burst oxidase components from cytosol to plasma membrane is regulated by guanine nucleotides and diacylglycerol. J Biol Chem 1992. [DOI: 10.1016/s0021-9258(19)88641-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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34
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Tyagi SR, Uhlinger DJ, Lambeth JD, Champagne C, Van Dyke TE. Altered diacylglycerol level and metabolism in neutrophils from patients with localized juvenile periodontitis. Infect Immun 1992; 60:2481-7. [PMID: 1316876 PMCID: PMC257185 DOI: 10.1128/iai.60.6.2481-2487.1992] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Diacylglycerol, a physiological activator of protein kinase C, was elevated nearly twofold in unstimulated peripheral blood neutrophils from patients with localized juvenile periodontitis compared with cells from normal individuals. These cells also showed an enhanced and prolonged elevation of diglyceride in response to N-formylmethionylleucylphenylalanine. The metabolism of a cell-permeant diacylglycerol by diglyceride kinase was significantly decreased, because of a fivefold or higher elevation in the apparent Km of cellular diglyceride kinase.
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Affiliation(s)
- S R Tyagi
- Department of Biochemistry, Emory University Medical School, O. Wayne Rollins Research Center, Atlanta, Georgia 30322
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35
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Tyagi SR, Neckelmann N, Uhlinger DJ, Burnham DN, Lambeth JD. Cell-free translocation of recombinant p47-phox, a component of the neutrophil NADPH oxidase: effects of guanosine 5'-O-(3-thiotriphosphate), diacylglycerol, and an anionic amphiphile. Biochemistry 1992; 31:2765-74. [PMID: 1312346 DOI: 10.1021/bi00125a017] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We reported previously that diacylglycerol (diC8) and GTP gamma S synergize with an anionic amphiphile such as sodium dodecyl sulfate (SDS) to produce high rates of superoxide generation in a cell-free system consisting of neutrophil plasma membrane plus cytosol [Burnham, D. N., Uhlinger, D. J., & Lambeth, J. D. (1990) J. Biol. Chem. 265, 17550-17559]. Here we investigate the effects of these activating factors on the plasma membrane association in an in vitro translated radiolabeled recombinant p47-phox protein. Apparent translocation, assayed by cosedimentation with plasma membranes, required the presence of excess cytosol and an anionic amphiphile, was enhanced by both GTP gamma S and diC8, and was inhibited by high salt, correlating qualitatively with activation; up to 70% cosedimentation was observed with the combination of activators (compared with less than 20% in their absence). Similar results were obtained using heat-inactivated cytosol, wherein another oxidase component, p67-phox, has been inactivated. Unexpectedly, from 50 to 80% of the apparent translocation occurred in the absence of membranes, indicating that protein aggregation accounted for a significant part of the observed translocation. Nevertheless, the percent translocation was increased in all cases by the presence of membranes, indicating some degree of protein-membrane interaction. While a control in vitro translated protein failed to translocate, cosedimentation of p47-phox occurred equally well when red blood cell or neutrophil plasma membranes lacking cytochrome b558 were used. Also, the peptide RGVHFIF, which is contained within the C-terminus of the large subunit of cytochrome b558, failed to inhibit translocation/aggregation of p47-phox, despite its ability to inhibit cell-free activation of the oxidase. The data are consistent with the following: (a) SDS, diC8, and GTP gamma S all act on cytosolic components to alter protein-protein and/or protein-membrane associations, and these changes are necessary (but not sufficient) for activation; (b) these altered associations are likely to function by increasing the local concentration of p47-phox and other components at the plasma membrane; (c) a high background of nonspecific associations in the cell-free activation system is likely to obscure any specific, functionally relevant associations (e.g., with cytochrome b558); and (d) the mechanism of translocation in the cell-free system differs from that seen in intact neutrophils.
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Affiliation(s)
- S R Tyagi
- Department of Biochemistry, Emory University Medical School, Atlanta, Georgia 30322
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36
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Nucleoside triphosphate requirements for superoxide generation and phosphorylation in a cell-free system from human neutrophils. Sodium dodecyl sulfate and diacylglycerol activate independently of protein kinase C. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(18)54809-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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37
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Grimminger F, Sibelius U, Aktories K, Just I, Seeger W. Suppression of cytoskeletal rearrangement in activated human neutrophils by botulinum C2 toxin. Impact on cellular signal transduction. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(18)54994-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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38
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Eggleton P, Penhallow J, Crawford N. Priming action of inositol hexakisphosphate (InsP6) on the stimulated respiratory burst in human neutrophils. BIOCHIMICA ET BIOPHYSICA ACTA 1991; 1094:309-16. [PMID: 1655041 DOI: 10.1016/0167-4889(91)90091-b] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
After priming by a number of different host, bacterial and chemical agents, human neutrophils may be stimulated to produce a greater respiratory burst than would be elicited by the stimulus alone. Other neutrophil functions may be similarly enhanced by pre-exposure to a priming agent. We describe here a new extracellular role for inositol hexakisphosphate (InsP6) as a priming agent for a variety of human neutrophil functional responses. Preincubation of the cells with InsP6 alone (up to 250 microM) has no stimulatory effect upon the basal production of reactive oxygen intermediates but the response to a subsequent stimulus (FMLP, PMA or phagocytic particles) is substantially enhanced. Levels 100-200% higher than 'stimulus only' controls have been recorded. Peak enhancement of the FMLP-induced oxidative response occurs after 1-2 min preincubation with InsP6 and the effect is dose-dependent (maximum at approx. 100 microM InsP6). As others have shown FMLP stimulation of superoxide anion production has no external Ca2+ dependence but the presence of low levels of Ca2+ and Mg2+ (0.1 mM) during priming appears to be an essential requirement for full expression. Reports of intracellular concentrations of InsP6 in mammalian cells in the 30-100 microM range suggest that the local release of this inositol polyphosphate from damaged or effect cells could have a physiologically important modulatory role on neutrophil functions.
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Affiliation(s)
- P Eggleton
- Department of Biochemistry and Cell Biology, Hunterian Institute, Royal College of Surgeons of England, London, U.K
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39
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Phospholipase D activation in a cell-free system from human neutrophils by phorbol 12-myristate 13-acetate and guanosine 5'-O-(3-thiotriphosphate). Activation is calcium dependent and requires protein factors in both the plasma membrane and cytosol. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(19)47364-x] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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40
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Balsinde J, Diez E, Mollinedo F. Arachidonic acid release from diacylglycerol in human neutrophils. Translocation of diacylglycerol-deacylating enzyme activities from an intracellular pool to plasma membrane upon cell activation. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(18)98454-1] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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41
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Twomey BM, Clay K, Dale MM. The protein kinase C inhibitor, K252a, inhibits superoxide production in human neutrophils activated by both PIP2-dependent and -independent mechanisms. Biochem Pharmacol 1991; 41:1449-54. [PMID: 1850276 DOI: 10.1016/0006-2952(91)90560-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We report that the putative protein kinase C inhibitor, K252a, at concentrations of 0.2 and 1 microM, inhibited the respiratory burst induced by fluoride and formyl-methionyl-leucyl-phenyl-alanine respectively, both in human neutrophils primed with a subthreshold dose of phorbol myristate acetate and in non-primed neutrophils. In addition, K252a effectively inhibited ConA-zymosan-mediated superoxide generation in Ca2(+)-depleted neutrophils, with virtually maximal inhibition seen at 1 microM. These results suggest that protein kinase C is involved in the putative phosphatidylinositol bisphosphate-independent signal transduction mechanism of the respiratory burst as well as the pathway dependent on phosphatidylinositol bisphosphate hydrolysis.
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Affiliation(s)
- B M Twomey
- Department of Pharmacology, University College London, U.K
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42
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43
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Bauldry SA, Bass DA, Cousart SL, McCall CE. Tumor necrosis factor alpha priming of phospholipase D in human neutrophils. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(20)64303-4] [Citation(s) in RCA: 93] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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44
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Cyclic AMP-elevating agents block chemoattractant activation of diradylglycerol generation by inhibiting phospholipase D activation. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(19)67823-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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45
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Shapira L, Borinski R, Sela MN, Soskolne A. Superoxide formation and chemiluminescence of peripheral polymorphonuclear leukocytes in rapidly progressive periodontitis patients. J Clin Periodontol 1991; 18:44-8. [PMID: 1646239 DOI: 10.1111/j.1600-051x.1991.tb01118.x] [Citation(s) in RCA: 91] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Previous studies have indicated that in certain types of chronic inflammatory periodontal diseases, polymorphonuclear leucocytes (PMN) functions are impaired. In view of the damage oxygen free radicals may cause to the periodontal tissues, the present study focussed on superoxide (SO) formation and luminol-dependent chemiluminescence (LDCL) by peripheral PMN cells in rapidly progressive periodontitis patients (RPP). PMN cell preparations were stimulated by either opsonized bacteria or phorbol myristate acetate (PMA). The results indicate that PMN cells from RPP patients, stimulated by opsonized bacteria, have significantly enhanced SO formation and LDCL response as compared to healthy subjects. The hyperactivity was cell-associated. In the presence of PMA, no significant differences were detected between the groups. The results suggest that PMN cells from RPP patients are functionally activated, and produce elevated levels of oxygen radicals. These oxygen radicals may play a role in the pathogenesis of RPP.
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Affiliation(s)
- L Shapira
- Department of Periodontics, Hebrew University, Hadassah School of Dental Medicine, Jerusalem, Israel
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46
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Wong K, Parente J, Prasad KV, Ng D. Auranofin modulated cytoplasmic free calcium in neutrophils by mobilizing intracellular calcium and inhibiting protein kinase. J Biol Chem 1990. [DOI: 10.1016/s0021-9258(18)45759-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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47
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Olson SC, Tyagi SR, Lambeth JD. Fluoride activates diradylglycerol and superoxide generation in human neutrophils via PLD/PA phosphohydrolase-dependent and -independent pathways. FEBS Lett 1990; 272:19-24. [PMID: 2172014 DOI: 10.1016/0014-5793(90)80439-p] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In contrast to the rapid, ethanol-inhibited superoxide generation by the receptor-linked agonist formyl-methionyl-leucyl-phenylalanine (fMLP), fluoride-activated superoxide generation occurs after a prolonged lag, and as shown herein is relatively ethanol-insensitive. We have investigated fluoride-activation of diradylglycerol generation and phospholipase D activity. Fluoride induces a very large increase in diradylglycerol mass (both 1,2-diacylglycerol (DAG) and 1-O-alkyl,2-acylglycerol (EAG)), with kinetics similar to superoxide generation. Unlike fMLP-activated diglyceride generation which is completely inhibited by ethanol, that produced by fluoride is only partially (30%) blocked. When the phosphatidylcholine pool is 3H-prelabeled, fluoride activates both [3H]phosphatidic acid (PA) and [3H]diglyceride generation with similar kinetics. Partial inhibition of the production of these species by ethanol was seen, coincident with the appearance of [3H]phosphatidylethanol, indicating phospholipase D-dependent transphosphatidylation had occurred. The data are consistent with the fluoride activation of PA and diglyceride generation by both phospholipase D-dependent and -independent (presumably phospholipase C) mechanisms.
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Affiliation(s)
- S C Olson
- Department of Biochemistry, Emory University Medical School, Atlanta, GA 30322
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48
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Kifor O, Congo D, Brown EM. Phorbol esters modulate the high Ca2(+)-stimulated accumulation of inositol phosphates in bovine parathyroid cells. J Bone Miner Res 1990; 5:1003-11. [PMID: 2080713 DOI: 10.1002/jbmr.5650051003] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We examined the effects of TPA on the high Ca2(+)-stimulated accumulation of inositol phosphates in bovine parathyroid cells to determine whether protein kinase C modulates phosphoinositide turnover in a fashion similar to that observed in other cell types stimulated by more classic Ca2+ mobilizing hormones. Following exposure of parathyroid cells to TPA (10(-6) M) for 10 or 30 minutes, there was a time- and dose-dependent inhibition of the accumulation of inositol monophosphate (IP), inositol bisphosphate (IP2) and inositol trisphosphate (IP3) stimulated by 3 mM Ca2+. Half the maximal observed inhibition took place at 1-10 nM TPA, with 50-60% inhibition of high Ca2(+)-stimulated accumulation of inositol phosphates at 10(-6) M TPA. The active phorbol ester, 4 beta-phorbol didecanoate, produced similar effects; the inactive derivative, 4 alpha-phorbol didecanoate, was without effect. When parathyroid cells were exposed to TPA (10(-6) M) for varying times and were then incubated with high (3 mM) Ca2+, inhibition of inositol phosphate accumulation was observed with 10 or 30 minutes preincubation. In contrast, preincubation of cells with TPA for 3 or 18 h markedly enhanced the high (3 mM) Ca2(+)-induced increase in inositol phosphates. In cells preincubated with TPA for 18 h, binding sites for [3H]phorbol dibutyrate and total protein kinase C (PKC) activity were reduced by greater than 95% and by 71%, respectively, consistent with downregulation of the enzyme.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- O Kifor
- Endocrine-Hypertension Unit, Brigham and Women's Hospital, Boston, MA 02115
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49
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Burnham DN, Uhlinger DJ, Lambeth JD. Diradylglycerol synergizes with an anionic amphiphile to activate superoxide generation and phosphorylation of p47phox in a cell-free system from human neutrophils. J Biol Chem 1990. [DOI: 10.1016/s0021-9258(18)38200-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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50
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Aaku E, Sorsa T, Wilkström M. Human immunoglobulin G potentiates superoxide production induced by chemotactic peptides and causes degranulation in isolated human neutrophils. BIOCHIMICA ET BIOPHYSICA ACTA 1990; 1052:243-7. [PMID: 2159345 DOI: 10.1016/0167-4889(90)90217-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Neutrophils are major cellular mediators of host defense and inflammation. They can be activated to produce superoxide and to release the contents of their granules to the extracellular space. We observed that monomeric human immunoglobulin G (IgG) sensitizes these cells to the chemotactic peptide N-formylmethionylleucylphenylalanine (fMLP). In cells submaximally stimulated by fMLP this enhancement was especially prominent. With saturating fMLP concentrations, the rate of O2- production was still about twice that in the control. No synergy with other activators (phorbol myristate acetate, concanavalin A) was observed. Binding of fMLP to the cells was decreased by IgG, resembling the effect of cytochalasin B. IgG did not induce O2- production on its own, but it stimulated degranulation of the neutrophils.
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Affiliation(s)
- E Aaku
- Department of Medical Chemisty, University of Helsinki, Finland
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