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Chakraborti S, Sarkar J, Chakraborti T. Role of PLD-PKCζ signaling axis in p47phox phosphorylation for activation of NADPH oxidase by angiotensin II in pulmonary artery smooth muscle cells. Cell Biol Int 2019; 43:678-694. [PMID: 30977575 DOI: 10.1002/cbin.11145] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/07/2019] [Indexed: 12/12/2022]
Abstract
We sought to determine the mechanism by which angiotensin II (ANGII) stimulates NADPH oxidase-mediated superoxide (O2 .- ) production in bovine pulmonary artery smooth muscle cells (BPASMCs). ANGII-induced increase in phospholipase D (PLD) and NADPH oxidase activities were inhibited upon pretreatment of the cells with chemical and genetic inhibitors of PLD2, but not PLD1. Immunoblot study revealed that ANGII treatment of the cells markedly increases protein kinase C-α (PKC-α), -δ, -ε, and -ζ levels in the cell membrane. Pretreatment of the cells with chemical and genetic inhibitors of PKC-ζ, but not PKC-α, -δ, and -ε, attenuated ANGII-induced increase in NADPH oxidase activity without a discernible change in PLD activity. Transfection of the cells with p47phox small interfering RNA inhibited ANGII-induced increase in NADPH oxidase activity without a significant change in PLD activity. Pretreatment of the cells with the chemical and genetic inhibitors of PLD2 and PKC-ζ inhibited ANGII-induced p47phox phosphorylation and subsequently translocation from cytosol to the cell membrane, and also inhibited its association with p22phox (a component of membrane-associated NADPH oxidase). Overall, PLD-PKCζ-p47phox signaling axis plays a crucial role in ANGII-induced increase in NADPH oxidase-mediated O2 .- production in the cells.
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Affiliation(s)
- Sajal Chakraborti
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Jaganmay Sarkar
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Tapati Chakraborti
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal 741235, India
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Yang J, Zhang D, Yu Y, Zhang RJ, Hu XL, Huang HF, Lu YC. Binding of FGF2 to FGFR2 in an autocrine mode in trophectoderm cells is indispensable for mouse blastocyst formation through PKC-p38 pathway. Cell Cycle 2016; 14:3318-30. [PMID: 26378412 DOI: 10.1080/15384101.2015.1087622] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Fibroblast growth factors (FGF1, FGF2 and FGF4) and fibroblast growth factor receptors (FGFR1, FGFR2, FGFR3 and FGFR4) have been reported to be expressed in preimplantation embryos and be required for their development. However, the functions of these molecules in trophectoderm cells (TEs) that lead to the formation of the blastocyst as well as the underlying mechanism have not been elucidated. The present study has demonstrated for the first time that endogenous FGF2 secreted by TEs can regulate protein expression and distribution in TEs via the FGFR2-mediated activation of PKC and p38, which are important for the development of expanded blastocysts. This finding provides the first explanation for the long-observed phenomenon that only high concentrations of exogenous FGFs have effects on embryonic development, but in vivo the amount of endogenous FGFs are trace. Besides, the present results suggest that FGF2/FGFR2 may act in an autocrine fashion and activate the downstream PKC/p38 pathway in TEs during expanded blastocyst formation.
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Affiliation(s)
- Jing Yang
- a Department of Reproductive Endocrinology ; Women's Hospital, Zhejiang University School of Medicine ; Hangzhou, Zhejiang , China.,b The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University ; Hangzhou, Zhejiang , China.,d Department of Assisted Reproduction ; Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine ; Shanghai , China
| | - Dan Zhang
- a Department of Reproductive Endocrinology ; Women's Hospital, Zhejiang University School of Medicine ; Hangzhou, Zhejiang , China.,b The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University ; Hangzhou, Zhejiang , China
| | - Ying Yu
- a Department of Reproductive Endocrinology ; Women's Hospital, Zhejiang University School of Medicine ; Hangzhou, Zhejiang , China.,b The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University ; Hangzhou, Zhejiang , China
| | - Run-Ju Zhang
- a Department of Reproductive Endocrinology ; Women's Hospital, Zhejiang University School of Medicine ; Hangzhou, Zhejiang , China.,b The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University ; Hangzhou, Zhejiang , China
| | - Xiao-Ling Hu
- a Department of Reproductive Endocrinology ; Women's Hospital, Zhejiang University School of Medicine ; Hangzhou, Zhejiang , China.,b The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University ; Hangzhou, Zhejiang , China
| | - He-Feng Huang
- b The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University ; Hangzhou, Zhejiang , China.,c The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University ; Shanghai , China
| | - Yong-Chao Lu
- a Department of Reproductive Endocrinology ; Women's Hospital, Zhejiang University School of Medicine ; Hangzhou, Zhejiang , China.,b The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University ; Hangzhou, Zhejiang , China
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Ghosh S, Gupta M, Xu W, Mavrakis DA, Janocha AJ, Comhair SAA, Haque MM, Stuehr DJ, Yu J, Polgar P, Naga Prasad SV, Erzurum SC. Phosphorylation inactivation of endothelial nitric oxide synthesis in pulmonary arterial hypertension. Am J Physiol Lung Cell Mol Physiol 2016; 310:L1199-205. [PMID: 27130529 DOI: 10.1152/ajplung.00092.2016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 04/25/2016] [Indexed: 02/02/2023] Open
Abstract
The impairment of vasodilator nitric oxide (NO) production is well accepted as a typical marker of endothelial dysfunction in vascular diseases, including in the pathophysiology of pulmonary arterial hypertension (PAH), but the molecular mechanisms accounting for loss of NO production are unknown. We hypothesized that low NO production by pulmonary arterial endothelial cells in PAH is due to inactivation of NO synthase (eNOS) by aberrant phosphorylation of the protein. To test the hypothesis, we evaluated eNOS levels, dimerization, and phosphorylation in the vascular endothelial cells and lungs of patients with PAH compared with controls. In mechanistic studies, eNOS activity in endothelial cells in PAH lungs was found to be inhibited due to phosphorylation at T495. Evidence pointed to greater phosphorylation/activation of protein kinase C (PKC) α and its greater association with eNOS as the source of greater phosphorylation at T495. The presence of greater amounts of pT495-eNOS in plexiform lesions in lungs of patients with PAH confirmed the pathobiological mechanism in vivo. Transfection of the activating mutation of eNOS (T495A/S1177D) restored NO production in PAH cells. Pharmacological blockade of PKC activity by β-blocker also restored NO formation by PAH cells, identifying one mechanism by which β-blockers may benefit PAH and cardiovascular diseases through recovery of endothelial functions.
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Affiliation(s)
- Sudakshina Ghosh
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Manveen Gupta
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Weiling Xu
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Deloris A Mavrakis
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Allison J Janocha
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Suzy A A Comhair
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | | | - Dennis J Stuehr
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Jun Yu
- Boston University School of Medicine, Boston, Massachusetts
| | - Peter Polgar
- Tupper Research Institute and Pulmonary, Critical Care, and Sleep Division, Tufts Medical Center, Boston, Massachusetts; and
| | | | - Serpil C Erzurum
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio; Respiratory Institute, Cleveland Clinic, Cleveland, Ohio
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Kawata J, Yamaguchi R, Yamamoto T, Ishimaru Y, Sakamoto A, Aoki M, Kitano M, Umehashi M, Hirose E, Yamaguchi Y. Human Neutrophil Elastase Induce Interleukin-10 Expression in Peripheral Blood Mononuclear Cells through Protein Kinase C Theta/Delta and Phospholipase Pathways. CELL JOURNAL 2016; 17:692-700. [PMID: 26862528 PMCID: PMC4746419 DOI: 10.22074/cellj.2016.3841] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 03/15/2015] [Indexed: 01/30/2023]
Abstract
Objective Neutrophils have an important role in the rapid innate immune response,
and the release or active secretion of elastase from neutrophils is linked to various
inflammatory responses. Purpose of this study was to determine how the human
neutrophil elastase affects the interleukin-10 (IL-10) response in peripheral blood
mononuclear cells (PBMC).
Materials and Methods In this prospective study, changes in IL-10 messenger RNA
(mRNA) and protein expression levels in monocytes derived from human PBMCs
were investigated after stimulation with human neutrophil elastase (HNE). A set of
inhibitors was used for examining the pathways for IL-10 production induced by HNE.
Results Reverse transcription polymerase chain reaction (RT-PCR) showed that
stimulation with HNE upregulated IL-10 mRNA expression by monocytes, while the
enzyme-linked immunosorbent assay (ELISA) revealed an increase of IL-10 protein
level in the culture medium. A phospholipase C inhibitor (U73122) partially blunt-
ed the induction of IL-10 mRNA expression by HNE, while IL-10 mRNA expression
was significantly reduced by a protein kinase C (PKC) inhibitor (Rottlerin). A calcium
chelator (3,4,5-trimethoxybenzoic acid 8-(diethylamino)octyl ester: TMB-8) inhibited
the response of IL-10 mRNA to stimulation by HNE. In addition, pretreatment with
a broad-spectrum PKC inhibitor (Ro-318425) partly blocked the response to HNE.
Finally, an inhibitor of PKC theta/delta abolished the increased level of IL-10 mRNA
expression.
Conclusion These results indicate that HNE mainly upregulates IL-10 mRNA ex-
pression and protein production in moncytes via a novel PKC theta/delta, although
partially via the conventional PKC pathway.
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Affiliation(s)
- Jin Kawata
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Rui Yamaguchi
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Takatoshi Yamamoto
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Yasuji Ishimaru
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Arisa Sakamoto
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Manabu Aoki
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Masafumi Kitano
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Misako Umehashi
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Eiji Hirose
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
| | - Yasuo Yamaguchi
- Graduate School of Medical Science, Kumamoto Health Science University, Kumamoto, Japan
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Maron BA, Leopold JA. Emerging Concepts in the Molecular Basis of Pulmonary Arterial Hypertension: Part II: Neurohormonal Signaling Contributes to the Pulmonary Vascular and Right Ventricular Pathophenotype of Pulmonary Arterial Hypertension. Circulation 2015; 131:2079-91. [PMID: 26056345 DOI: 10.1161/circulationaha.114.006980] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Bradley A Maron
- From Division of Cardiovascular Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (B.A.M., J.A.L.); and Department of Cardiology, Veterans Affairs Boston Healthcare System, Boston, MA (B.A.M.)
| | - Jane A Leopold
- From Division of Cardiovascular Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (B.A.M., J.A.L.); and Department of Cardiology, Veterans Affairs Boston Healthcare System, Boston, MA (B.A.M.).
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Kawata J, Aoki M, Ishimaru Y, Ono T, Sagara K, Narahara S, Matsmoto T, Hirose E, Yamaguchi Y. Mechanism of tissue factor production by monocytes stimulated with neutrophil elastase. Blood Cells Mol Dis 2015; 54:206-9. [DOI: 10.1016/j.bcmd.2014.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 10/25/2013] [Indexed: 11/25/2022]
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