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Svrcina H, Greer A, Baker S, Smith M, Martinez P, Granger N, Thomas N, Miller J, Steinke E, Davitt K, Sloane E, Nugent L, Sabo R, Williams C, Lipton MA, Jones D. Death effects of reveromycin A in normal and disease-associated cells of the joint. J Cell Biochem 2017; 119:4382-4396. [PMID: 29077233 DOI: 10.1002/jcb.26463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/24/2017] [Indexed: 11/09/2022]
Abstract
Earlier work in our laboratory demonstrated that naturally occurring reveromycin A (Rev A) causes apoptosis in osteoclasts without accompanying necrosis. Rev A death effects in both normal and diseased joint cells were investigated in this study. A dose of 10 μM Rev A did not cause apoptosis nor necrosis in monolayer chondrocytes, even at pH 6.8, a pH mimicking that of an inflamed joint. In contrast, at the acidic pH Rev A did induce significant apoptosis (fourfold increase at 48 h of treatment, P < 0.005) in normal synoviocytes without accompanying necrosis. Western blot of the normal synoviocyte proteins revealed that cytochrome c levels were not significantly changed over the time course of treatment nor did caspase 8 activity increase; therefore, Rev A appears to exert this apoptotic effect through a mechanism independent of the classical intrinsic and extrinsic pathways. Fibroblast-like synoviocytes isolated from rheumatoid arthritis patients (RAFLS) as well as normal human fibroblast-like synoviocytes (NHFLS), cells known to play key roles in arthritic joint pathology, were also subjected to Rev A treatment at both physiologic and acidic pH's. Neither apoptosis nor necrosis was induced in either RAFLS or NHFLS. Parallel mitomycin C treatment of NHFLS induced both apoptosis and necrosis. Comparative structure-activity analyses of Rev A and mitomycin C revealed that Rev A is less likely to cross the cell membrane at near neutral pH. Collectively the data reveal that a physiological dose of Rev A under acidic conditions induces normal synoviocytes to undergo apoptosis while pathologic fibroblast-like synoviocytes are resistant to apoptosis and necrosis.
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Affiliation(s)
- Haley Svrcina
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Austin Greer
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Seth Baker
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Morgan Smith
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Patricia Martinez
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Nathan Granger
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Natassja Thomas
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Jaylin Miller
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Ellen Steinke
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Kelsey Davitt
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Emily Sloane
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Lauren Nugent
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Ryan Sabo
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Calli Williams
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
| | - Mark A Lipton
- Department of Chemistry, Purdue University, West Lafayette, Indiana
| | - Daniel Jones
- Division of Natural Sciences, Department of Biology, Indiana Wesleyan University, Marion, Indiana
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Gomez PF, Pillinger MH, Attur M, Marjanovic N, Dave M, Park J, Bingham CO, Al-Mussawir H, Abramson SB. Resolution of inflammation: prostaglandin E2 dissociates nuclear trafficking of individual NF-kappaB subunits (p65, p50) in stimulated rheumatoid synovial fibroblasts. THE JOURNAL OF IMMUNOLOGY 2006; 175:6924-30. [PMID: 16272352 DOI: 10.4049/jimmunol.175.10.6924] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
NF-kappaB transcription factors regulate inflammatory responses to cytokines such as IL-1beta and TNF-alpha. We tested whether PGE2 regulated nuclear localization of individual NF-kappaB subunits, p65 and p50, in synovial fibroblasts harvested from patients with rheumatoid arthritis (RA). IL-1beta/TNF-alpha stimulated the translocation of p65 and p50 from the cytosol to the nucleus of human RA synovial fibroblasts, as well as NF-kappaB activation measured by luciferase reporter assay. PGE2 (10 nM, 6 h) enhanced p50, but inhibited p65 translocation and NF-kappaB activation. In contrast, depletion of endogenous PGE2 by ibuprofen (100 microM) and celecoxib (5 microM) enhanced p65, but inhibited p50 nuclear translocation as well as binding to NF-kappaB DNA binding sites. PGE2 also blocked IL-1beta/TNF-alpha-stimulated ERK activation, and the ERK inhibitor, PD98059, mimicked PGE2 in blocking p65, but enhancing p50 nuclear translocation, suggesting that the effects of PGE2 on p65 and p50 are mediated via effects on ERK. PGE2 also enhanced the expression of IkappaBalpha in an ERK-independent manner, suggesting that PGE2 inhibits NF-kappaB activation by both ERK-dependent and -independent mechanisms. Our data indicate that PGE2 may act to attenuate cytokine-induced inflammatory responses in RA synovial fibroblasts via regulation of the localization of specific NF-kappaB family dimers.
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Affiliation(s)
- Paul F Gomez
- Department of Rheumatology, Hospital for Joint Diseases and Department of Medicine, New York University School of Medicine, New York, NY 10003, USA
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Mor A, Abramson SB, Pillinger MH. The fibroblast-like synovial cell in rheumatoid arthritis: a key player in inflammation and joint destruction. Clin Immunol 2005; 115:118-28. [PMID: 15885632 DOI: 10.1016/j.clim.2004.12.009] [Citation(s) in RCA: 271] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2004] [Revised: 12/24/2004] [Accepted: 12/27/2004] [Indexed: 02/02/2023]
Abstract
Although multiple cell types are present in the rheumatoid joint, the fibroblast-like synovial cell (FLS) is among the most prominent. It is now appreciated that the FLS is not only space-filling, but is directly responsible for cartilage destruction, and also drives both inflammation and autoimmunity. In this article, we consider the normal role of the FLS in healthy joints, and review evidence that implicates the FLS as a central player in the propagation of rheumatoid arthritis.
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Affiliation(s)
- Adam Mor
- Division of Rheumatology, NYU School of Medicine and The Hospital for Joint Disease, New York, NY 10003, USA
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Pillinger MH, Marjanovic N, Kim SY, Scher JU, Izmirly P, Tolani S, Dinsell V, Lee YC, Blaser MJ, Abramson SB. Matrix metalloproteinase secretion by gastric epithelial cells is regulated by E prostaglandins and MAPKs. J Biol Chem 2005; 280:9973-9. [PMID: 15640153 DOI: 10.1074/jbc.m413522200] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Because matrix metalloproteinases (MMPs) play roles in inflammatory tissue injury, we asked whether MMP secretion by gastric epithelial cells may contribute to gastric injury in response to signals involved in Helicobacter pylori-induced inflammation and/or cyclooxygenase inhibition. Tumor necrosis factor (TNF)-alpha, interleukin (IL)-1beta, and epidermal growth factor (EGF) stimulated gastric cell MMP-1 secretion, indicating that MMP-1 secretion occurs in inflammatory as well as non-inflammatory situations. MMP-1 secretion required activation of the MAPK Erk and subsequent protein synthesis but was down-regulated by the alternate MAPK, p38. In contrast, secretion of MMP-13 was stimulated by TNF-alpha/IL-1beta but not EGF and was Erk-independent and mediated by p38. MMP-13 secretion was more rapid (peak, 6 h) than MMP-1 (peak > or =30 h) and only partly depended on protein synthesis, suggesting initial release of a pre-existing MMP-13 pool. Therefore, MMP-1 and MMP-13 secretion are differentially regulated by MAPKs. MMP-1 secretion was regulated by E prostaglandins (PGEs) in an Erk-dependent manner. PGEs enhanced Erk activation and MMP-1 secretion in response to EGF but inhibited Erk and MMP-1 when TNF-alpha and IL-1beta were the stimuli, indicating that the effects of PGEs on gastric cell responses are context-dependent. These data show that secretion of MMPs is differentially regulated by MAPKs and suggest mechanisms through which H. pylori infection and/or cyclooxygenase inhibition may induce epithelial cell signaling to contribute to gastric ulcerogenesis.
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Affiliation(s)
- Michael H Pillinger
- Department of Medicine, New York University School of Medicine, New York, New York 10016, USA.
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Pillinger MH, Dinsell V, Apsel B, Tolani SN, Marjanovic N, Chan ESL, Gomez P, Clancy R, Chang LF, Abramson SB. Regulation of metalloproteinases and NF-kappaB activation in rabbit synovial fibroblasts via E prostaglandins and Erk: contrasting effects of nabumetone and 6MNA. Br J Pharmacol 2004; 142:973-82. [PMID: 15210577 PMCID: PMC1575112 DOI: 10.1038/sj.bjp.0705864] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
1 Nabumetone is a prodrug that is converted in vivo into 6-methoxy-2-naphthylacetic acid (6MNA), a cyclooxygenase inhibitor with anti-inflammatory properties. We tested the effects of nabumetone and 6MNA on the inflammatory responses of synovial fibroblasts (SFs). 2 Brief exposures to 6MNA (50-150 microm) had no effect on IL-1beta/TNF-alpha (each 20 ng ml(-1))-stimulated Erk activation. Longer exposures depleted prostaglandin E1 (PGE1) as much as 70%, and stimulated Erk as much as 300%. Nabumetone (150 microm) inhibited Erk activation by 60-80%. 6MNA (50-150 microm) stimulated (approximately 200%) and nabumetone (150 microm) inhibited (approximately 50%) matrix metalloproteinase (MMP)-1, but not MMP-13 secretion from SFs. 3 6MNA stimulation of MMP-1 secretion was inhibited approximately 30% by PGE1 (1 microm) and approximately 80% by the Erk pathway inhibitor UO126 (10 microm), confirming that PGE depletion and Erk activation mediate MMP-1 secretion by 6MNA. 4 Consistent with its role as an Erk inhibitor, nabumetone (150 microm) abrogated 6MNA enhancement of MMP-1 secretion. 5 UO126 (10 microm) and nabumetone (150 microm) inhibited (approximately 70 and 40%, respectively), but 6MNA (150 microm) enhanced (approximately 40%), NF-kappaB activation. 6 Our data indicate that 6MNA shares with other COX inhibitors several proinflammatory effects on synovial fibroblasts. In contrast, nabumetone demonstrates anti-inflammatory and potentially arthroprotective effects that have not been previously appreciated.
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Affiliation(s)
- Michael H Pillinger
- The Department of Medicine, New York University School of Medicine, New York, NY 10016, USA.
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Pillinger MH, Rosenthal PB, Tolani SN, Apsel B, Dinsell V, Greenberg J, Chan ESL, Gomez PF, Abramson SB. Cyclooxygenase-2-derived E prostaglandins down-regulate matrix metalloproteinase-1 expression in fibroblast-like synoviocytes via inhibition of extracellular signal-regulated kinase activation. THE JOURNAL OF IMMUNOLOGY 2004; 171:6080-9. [PMID: 14634122 DOI: 10.4049/jimmunol.171.11.6080] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We examined the regulation of matrix metalloproteinase (MMP) production by mitogen-activated protein kinases and cyclooxygenases (COXs) in fibroblast-like synoviocytes (FLSCs). IL-1beta and TNF-alpha stimulated FLSC extracellular signal-regulated kinase (ERK) activation as well as MMP-1 and -13 release. Pharmacologic inhibitors of ERK inhibited MMP-1, but not MMP-13 expression. Whereas millimolar salicylates inhibited both ERK and MMP-1, nonsalicylate COX and selective COX-2 inhibitors enhanced stimulated MMP-1 release. Addition of exogenous PGE(1) or PGE(2) inhibited MMP-1, reversed the effects of COX inhibitors, and inhibited ERK activation, suggesting that COX-2 activity tonically inhibits MMP-1 production via ERK inhibition by E PGs. Exposure of FLSCs to nonselective COX and selective COX-2 inhibitors in the absence of stimulation resulted in up-regulation of MMP-1 expression in an ERK-dependent manner. Moreover, COX inhibition sufficient to reduce PGE levels increased ERK activity. Our data indicate that: 1) ERK activation mediates MMP-1 but not MMP-13 release from FLSCs, 2) COX-2-derived E PGs inhibit MMP-1 release from FLSCs via inhibition of ERK, and 3) COX inhibitors, by attenuating PGE inhibition of ERK, enhance the release of MMP-1 by FLSC.
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Affiliation(s)
- Michael H Pillinger
- Division of Rheumatology, Department of Medicine, New York University School of Medicine, New York, NY 10016, USA.
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Tung JT, Arnold CE, Alexander LH, Yuzbasiyan-Gurkan V, Venta PJ, Richardson DW, Caron JP. Evaluation of the influence of prostaglandin E2 on recombinant equine interleukin-1beta-stimulated matrix metalloproteinases 1, 3, and 13 and tissue inhibitor of matrix metalloproteinase 1 expression in equine chondrocyte cultures. Am J Vet Res 2002; 63:987-93. [PMID: 12118680 DOI: 10.2460/ajvr.2002.63.987] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine the effects of prostaglandin E2 (PGE2) on recombinant equine interleukin (IL)-1beta-stimulated expression of matrix metalloproteinases (MMP 1, MMP 3, MMP 13) and tissue inhibitor of matrix metalloproteinase 1 (TIMP 1) in vitro. SAMPLE POPULATION Cultured equine chondrocytes. PROCEDURE Stationary monolayers of first-passage chondrocytes were exposed to graduated concentrations of PGE2 with or without a subsaturating dose (50 pg/ml) of recombinant equine IL-1beta (reIL-1beta) to induce expression of MMP 1, MMP 3, MMP 13, and TIMP 1, followed by RNA isolation and northern blotting. In subsequent experiments, gene expression was similarly quantified from mRNA isolated from cultures pretreated with phenylbutazone to quench endogenous PGE2 synthesis, followed by exposure to reIL-1beta and exogenous PGE2 (5 mg/ml) with appropriate controls. RESULTS Exogenous PGE2 (10 mg/ml) significantly reduced reIL-1beta-induced expression of MMP 1, MMP 3, MMP 13, and TIMP 1. Abrogation of cytokine induction with this dose of PGE2 was comparable to that for dexamethasone (10(-5) M) control. Similarly, pretreatment with phenylbutazone, followed by exposure to relL-1beta and PGE2 (5 mg/ml), was associated with a reduced expression of the genes of interest, an effect that was significant for MMP 1, MMP 13, and TIMP 1. CONCLUSIONS AND CLINICAL RELEVANCE The MMP and TIMP 1 are important mediators in the pathophysiologic events in osteoarthritis. The potential for physiologically relevant regulation of expression of these genes by PGE2 is a consideration in the use of drugs that inhibit prostanoid synthesis in the treatment of equine arthropathies.
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Affiliation(s)
- Jayne T Tung
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing 48824, USA
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