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Kuboki T, Kantawong F, Burchmore R, Dalby MJ, Kidoaki S. 2D-DIGE proteomic analysis of mesenchymal stem cell cultured on the elasticity-tunable hydrogels. Cell Struct Funct 2012; 37:127-39. [PMID: 22971925 DOI: 10.1247/csf.12012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The present study focuses on mechanotransduction in mesenchymal stem cells (MSCs) in response to matrix elasticity. By using photocurable gelatinous gels with tunable stiffness, proteomic profiles of MSCs cultured on tissue culture plastic, soft (3 kPa) and stiff (52 kPa) matrices were deciphered using 2-dimensional differential in-gel analysis (2D-DIGE). The DIGE data, tied to immunofluorescence, indicated abundance and organization changes in the cytoskeletonal proteins as well as differential regulation of important signaling-related proteins, stress-responsing proteins and also proteins involved in collagen synthesis. The major CSK proteins including actin, tubulin and vimentin of the cells cultured on the gels were remarkably changed their expressions. Significant down-regulation of α-tubulin and β-actin can be observed on gel samples in comparison to the rigid tissue culture plates. The expression abundance of vimentin appeared to be highest in the MSCs cultured on hard gels. These results suggested that the substrate stiffness significantly affects expression balances in cytoskeletal proteins of MSCs with some implications to cellular tensegrity.
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Affiliation(s)
- Thasaneeya Kuboki
- Institute for Materials Chemistry and Engineering, Division of Biomolecular Chemistry, Kyushu University, Fukuoka, Japan
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Law J, Yeung C, Wan S, Ingebrandt S, Lau H, Rudd J, Chan M. The significance of chloride in the inhibitory action of disodium cromoglycate on immunologically-stimulated rat peritoneal mast cells. Biochim Biophys Acta Gen Subj 2011; 1810:867-74. [DOI: 10.1016/j.bbagen.2011.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 05/09/2011] [Accepted: 05/13/2011] [Indexed: 10/18/2022]
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Wang L, Ding G, Gu Q, Schwarz W. Single-channel properties of a stretch-sensitive chloride channel in the human mast cell line HMC-1. EUROPEAN BIOPHYSICS JOURNAL : EBJ 2010; 39:757-67. [PMID: 19823818 PMCID: PMC2847164 DOI: 10.1007/s00249-009-0542-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2009] [Accepted: 09/09/2009] [Indexed: 12/11/2022]
Abstract
A stretch-activated (SA) Cl(-) channel in the plasma membrane of the human mast cell line HMC-1 was identified in outside-out patch-clamp experiments. SA currents, induced by pressure applied to the pipette, exhibited voltage dependence with strong outward rectification (55.1 pS at +100 mV and an about tenfold lower conductance at -100 mV). The probability of the SA channel being open (P (o)) also showed steep outward rectification and pressure dependence. The open-time distribution was fitted with three components with time constants of tau(1o) = 755.1 ms, tau(2o) = 166.4 ms, and tau(3o) = 16.5 ms at +60 mV. The closed-time distribution also required three components with time constants of tau(1c) = 661.6 ms, tau(2c) = 253.2 ms, and tau(3c) = 5.6 ms at +60 mV. Lowering extracellular Cl(-) concentration reduced the conductance, shifted the reversal potential toward chloride reversal potential, and decreased the P (o) at positive potentials. The SA Cl(-) currents were reversibly blocked by the chloride channel blocker 4,4'-diisothiocyanatostilbene-2,2'-disulfonic acid (DIDS) but not by (Z)-1-(p-dimethylaminoethoxyphenyl)-1,2-diphenyl-1-butene (tamoxifen). Furthermore, in HMC-1 cells swelling due to osmotic stress, DIDS could inhibit the increase in intracellular [Ca(2+)] and degranulation. We conclude that in the HMC-1 cell line, the SA outward currents are mediated by Cl(-) influx. The SA Cl(-) channel might contribute to mast cell degranulation caused by mechanical stimuli or accelerate membrane fusion during the degranulation process.
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Affiliation(s)
- Lina Wang
- Shanghai Research Center for Acupuncture and Meridians, Department of Mechanics and Engineering Science, Fudan University, 220 Handan Rd, Shanghai, 200433 China
- Max Planck Institute for Biophysics, Max-von-Laue Str. 3, 60438 Frankfurt am Main, Germany
| | - Guanghong Ding
- Shanghai Research Center for Acupuncture and Meridians, Department of Mechanics and Engineering Science, Fudan University, 220 Handan Rd, Shanghai, 200433 China
| | - Quanbao Gu
- Shanghai Research Center for Acupuncture and Meridians, Department of Mechanics and Engineering Science, Fudan University, 220 Handan Rd, Shanghai, 200433 China
| | - Wolfgang Schwarz
- Shanghai Research Center for Acupuncture and Meridians, Department of Mechanics and Engineering Science, Fudan University, 220 Handan Rd, Shanghai, 200433 China
- Max Planck Institute for Biophysics, Max-von-Laue Str. 3, 60438 Frankfurt am Main, Germany
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Yeung CK, Law JKY, Sam SW, Ingebrandt S, Lau HYA, Rudd JA, Chan M. The Use of Microelectrode Array (MEA) to Study Rat Peritoneal Mast Cell Activation. J Pharmacol Sci 2008; 107:201-12. [DOI: 10.1254/jphs.fp0080027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Narenjkar J, Marsh SJ, Assem ESK. Inhibition of the antigen-induced activation of RBL-2H3 cells by charybdotoxin and cetiedil. Eur J Pharmacol 2004; 483:95-106. [PMID: 14729096 DOI: 10.1016/j.ejphar.2003.10.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Quinidine and Ba(2+), non-selective K(+)-channel blockers, have previously been shown to inhibit antigen-induced mediator (beta-hexosaminidase) release from RBL-2H3 cells, a mucosal-type mast cell line. We therefore used selective blockers of Ca(2+)-activated and other K(+) channels to determine if there was a role for these channels in antigen-induced mediator release. Charybdotoxin and cetiedil dose-dependently inhibited beta-hexosaminidase release with IC(50) values of 133 nM and 84 microM, respectively. Charybdotoxin also inhibited the repolarization phase of the antigen-induced biphasic change in the membrane potential (IC(50) 84 nM), antigen-stimulated 86Rb(+)-efflux and increase in free intracellular calcium, [Ca(2+)](i). Iberiotoxin, margatoxin, apamin and tetraethylammonium had no effect on beta-hexosaminidase release. These results suggest that K(+) conductances play a significant role in mediator release from RBL-2H3, that these conductances are of the intermediate conductance Ca(2+)-activated K(+) channel (IK(Ca)) type, and that they are somewhat similar to those which have been described in red blood cells, though they are much less sensitive to clotrimazole.
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Affiliation(s)
- Jamshid Narenjkar
- Department of Pharmacology, University College London, Gower St., London WC1E 6BT, UK
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Roloff T, Ziegler A, Heber D, Seebeck J. Pharmacological inhibition of outwardly rectifying Cl- currents in rat peritoneal mast cells: a comparison of different stilbene derivatives. Eur J Pharmacol 2003; 478:81-8. [PMID: 14575791 DOI: 10.1016/j.ejphar.2003.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Diethylstilbestrol and other stilbene derivatives can provide some inhibition of the outwardly rectifying Cl- current (I(Cl-,OR)) in rat peritoneal mast cells. In order to elucidate structure-activity relationships of diethylstilbestrol, 12 stilbenes as well as 17beta-estradiol and hexestrol were tested in rat peritoneal mast cells using the nystatin-perforated patch approach of the whole-cell patch-clamp technique. Since trans-stilbene showed no effect, the substituents of diethylstilbestrol must be of importance. The introduction of only one hydroxy group in trans-stilbene produced potent inhibition of the I(Cl-,OR) (IC50: 3.3 microM). But in contrast, resveratrol with hydroxy groups at positions 4, 3', and 5' as well as methoxy substituted stilbene derivatives and 17beta-estradiol were ineffective. On the other hand, hexestrol potently inhibited I(Cl-,OR) indicating that the aromatic ring systems can also be connected by an ethyl bridge. In summary, a hydroxy group at position 4 (or 4') is a prerequisite for diethylstilbestrol-mediated inhibition of I(Cl-,OR).
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Affiliation(s)
- Tim Roloff
- Institute of Pharmacology, University of Kiel, Hospitalstr 4, D-24105 Kiel, Germany
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Kulka M, Gilchrist M, Duszyk M, Befus AD. Expression and functional characterization of CFTR in mast cells. J Leukoc Biol 2002. [DOI: 10.1189/jlb.71.1.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- M. Kulka
- Pulmonary Research Group, University of Alberta, Edmonton, Canada
| | - M. Gilchrist
- Pulmonary Research Group, University of Alberta, Edmonton, Canada
| | - M. Duszyk
- Pulmonary Research Group, University of Alberta, Edmonton, Canada
| | - A. D. Befus
- Pulmonary Research Group, University of Alberta, Edmonton, Canada
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Roloff T, Wördehoff N, Ziegler A, Seebeck J. Evidence against the functional involvement of outwardly rectifying Cl- channels in agonist-induced mast cell exocytosis. Eur J Pharmacol 2001; 431:1-9. [PMID: 11716836 DOI: 10.1016/s0014-2999(01)01371-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In isolated rat peritoneal mast cells, an outwardly rectifying Cl- channel has been described. Influx of Cl- through this Cl- channel (I(Cl-(OR)) causes hyperpolarization, which facilitates Ca2+ currents through store-operated Ca2+ channels. The exocytotic effect of nerve growth factor (NGF) in the presence of lyso-phosphatidylserine strictly depends on the presence of extracellular [Ca2+]o. The aim of the present study was to assess the importance of I(Cl-(OR)) for exocytosis induced by NGF/lyso-phosphatidylserine. Therefore, we investigated the effects on NGF/lyso-phosphatidylserine-induced exocytosis of [3H]5-hydroxytryptamine ([3H]5-HT) in rat peritoneal mast cells: (a) of two inhibitors of I(Cl-(OR)) (4,4'-diisothiocyanatostilbene2,2'-disulfonic acid [DIDS] and diethylstilbestrol), and (b) of replacement of extracellular Cl- by methylsulfate. Additionally, whole-cell patch-clamp experiments (nystatin-perforated patch) were performed. Diethylstibestrol and DIDS, in concentrations sufficient to abolish the I(Cl-(OR)) (10 microM) and the replacement of (Cl-)o by methylsulfate, were ineffective in impairing the NGF/lyso-phosphatidylserine-induced [3H]5-HT-release. These findings argue against a role of outwardly rectifying Cl- channels in exocytosis induced by NGF/lyso-phosphatidylserine in rat peritoneal mast cells.
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Affiliation(s)
- T Roloff
- Institute of Pharmacology, Hospitalstrasse 4, University of Kiel, D-24105, Kiel, Germany
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Duffy SM, Lawley WJ, Conley EC, Bradding P. Resting and activation-dependent ion channels in human mast cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2001; 167:4261-70. [PMID: 11591748 DOI: 10.4049/jimmunol.167.8.4261] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The mechanism of mediator secretion from mast cells in disease is likely to include modulation of ion channel activity. Several distinct Ca(2+), K(+), and Cl(-) conductances have been identified in rodent mast cells, but there are no data on human mast cells. We have used the whole-cell variant of the patch clamp technique to characterize for the first time macroscopic ion currents in purified human lung mast cells and human peripheral blood-derived mast cells at rest and following IgE-dependent activation. The majority of both mast cell types were electrically silent at rest with a resting membrane potential of around 0 mV. Following IgE-dependent activation, >90% of human peripheral blood-derived mast cells responded within 2 min with the development of a Ca(2+)-activated K(+) current exhibiting weak inward rectification, which polarized the cells to around -40 mV and a smaller outwardly rectifying Ca(2+)-independent Cl(-) conductance. Human lung mast cells showed more heterogeneity in their response to anti-IgE, with Ca(2+)-activated K(+) currents and Ca(2+)-independent Cl(-) currents developing in approximately 50% of cells. In both cell types, the K(+) current was blocked reversibly by charybdotoxin, which along with its electrophysiological properties suggests it is carried by a channel similar to the intermediate conductance Ca(2+)-activated K(+) channel. Charybdotoxin did not consistently attenuate histamine or leukotriene C(4) release, indicating that the Ca(2+)-activated K(+) current may enhance, but is not essential for, the release of these mediators.
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Affiliation(s)
- S M Duffy
- Division of Respiratory Medicine, Institute for Lung Health, University of Leicester, Leicester, United Kingdom
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Forsythe P, Gilchrist M, Kulka M, Befus AD. Mast cells and nitric oxide: control of production, mechanisms of response. Int Immunopharmacol 2001; 1:1525-41. [PMID: 11515817 DOI: 10.1016/s1567-5769(01)00096-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Mast cells are involved in numerous activities ranging from control of the vasculature, to tissue injury and repair, allergic inflammation and host defences. They synthesize and secrete a variety of mediators, activating and modulating the functions of nearby cells and initiating complex physiological changes. Interestingly, NO produced by mast cells and/or other cells in the microenvironment appears to regulate these diverse roles. This review outlines some of the pathways central to the production of NO by mast cells and identifies many of the tightly controlled regulatory mechanisms involved. Several cofactors and regulatory elements are involved in NO production, and these act at transcriptional and post-translational sites. Their involvement in NO production will be outlined and the possibility that these pathways are critically important in mast cell functions will be discussed. The effects of NO on mast cell functions such as adhesion, activation and mediator secretion will be examined with a focus on molecular mechanisms by which NO modifies intracellular signalling pathways dependent or independent of cGMP and soluble guanylate cyclase. The possibility that NO regulates mast cell function through effects on selected ion channels will be discussed. Metabolic products of NO including peroxynitrite and other reactive species may be the critical elements that affect the actions of NO on mast cell functions. Further understanding of the actions of NO on mast cell activities may uncover novel strategies to modulate inflammatory conditions.
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Affiliation(s)
- P Forsythe
- 574 Heritage Medical Research Center, University of Alberta, Edmonton, Canada
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Duffy SM, Leyland ML, Conley EC, Bradding P. Voltage‐dependent and calcium‐activated ion channels in the human mast cell line HMC‐1. J Leukoc Biol 2001. [DOI: 10.1189/jlb.70.2.233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- S. M. Duffy
- Division of Respiratory Medicine, Institute for Lung Health, University of Leicester Medical School, Leicester, United Kingdom
| | - M. L. Leyland
- Division of Respiratory Medicine, Institute for Lung Health, University of Leicester Medical School, Leicester, United Kingdom
| | - E. C. Conley
- Division of Respiratory Medicine, Institute for Lung Health, University of Leicester Medical School, Leicester, United Kingdom
| | - P. Bradding
- Division of Respiratory Medicine, Institute for Lung Health, University of Leicester Medical School, Leicester, United Kingdom
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