1
|
Guerin MC, Torreilles J. Lipid peroxidation by peroxidase-catalyzed bioactivation of tyrosine. Redox Rep 2016; 1:287-90. [DOI: 10.1080/13510002.1995.11746999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
2
|
Pilmé J, Luppi E, Bergès J, Houée-Lévin C, de la Lande A. Topological analyses of time-dependent electronic structures: application to electron-transfers in methionine enkephalin. J Mol Model 2014; 20:2368. [PMID: 25060148 DOI: 10.1007/s00894-014-2368-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 06/22/2014] [Indexed: 10/25/2022]
Abstract
We have studied electron transfers (ET) between electron donors and acceptors, taking as illustrative example the case of ET in methionine enkephalin. Recent pulse and gamma radiolysis experiments suggested that an ultrafast ET takes place from the C-terminal tyrosine residue to the N-terminal, oxidized, methionine residue. According to standard theoretical frameworks like the Marcus theory, ET can be decomposed into two successive steps: i) the achievement through thermal fluctuations, of a set of nuclear coordinates associated with degeneracy of the two electronic states, ii) the electron tunneling from the donor molecular orbital to the acceptor molecular orbital. Here, we focus on the analysis of the time-dependent electronic dynamics during the tunneling event. This is done by extending the approaches based on the topological analyses of stationary electronic density and of the electron localization function (ELF) to the time-dependent domain. Furthermore, we analyzed isosurfaces of the divergence of the current density, showing the paths that are followed by the tunneling electron from the donor to the acceptor. We show how these functions can be calculated with constrained density functional theory. Beyond this work, the topological tools used here can open up new opportunities for the electronic description in the time-dependent domain.
Collapse
Affiliation(s)
- Julien Pilmé
- Laboratoire de Chimie Théorique, UPMC Université Paris 06, UMR 7616, F-75005, Paris, France,
| | | | | | | | | |
Collapse
|
3
|
Castaño C, Lorente C, Martins-Froment N, Oliveros E, Thomas AH. Degradation of α-melanocyte-stimulating hormone photosensitized by pterin. Org Biomol Chem 2014; 12:3877-86. [DOI: 10.1039/c4ob00434e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
4
|
Castaño C, Dántola ML, Oliveros E, Thomas AH, Lorente C. Oxidation of Tyrosine Photoinduced by Pterin in Aqueous Solution. Photochem Photobiol 2013; 89:1448-55. [DOI: 10.1111/php.12099] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 05/07/2013] [Indexed: 12/01/2022]
Affiliation(s)
- Carolina Castaño
- Departamento de Química; Facultad de Ciencias Exactas; Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA); Universidad Nacional de La Plata; CCT La Plata-CONICET; La Plata Argentina
| | - María L. Dántola
- Departamento de Química; Facultad de Ciencias Exactas; Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA); Universidad Nacional de La Plata; CCT La Plata-CONICET; La Plata Argentina
| | - Esther Oliveros
- Laboratoire des Interactions Moléculaires Réactivité Chimique et Photochimique (IMRCP); UMR 5623-CNRS/UPS; Université Toulouse III (Paul Sabatier); Toulouse Cédex France
| | - Andrés H. Thomas
- Departamento de Química; Facultad de Ciencias Exactas; Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA); Universidad Nacional de La Plata; CCT La Plata-CONICET; La Plata Argentina
| | - Carolina Lorente
- Departamento de Química; Facultad de Ciencias Exactas; Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA); Universidad Nacional de La Plata; CCT La Plata-CONICET; La Plata Argentina
| |
Collapse
|
5
|
Mozziconacci O, Mirkowski J, Rusconi F, Kciuk G, Wisniowski PB, Bobrowski K, Houée-Levin C. Methionine Residue Acts as a Prooxidant in the •OH-Induced Oxidation of Enkephalins. J Phys Chem B 2012; 116:12460-72. [DOI: 10.1021/jp307043q] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olivier Mozziconacci
- Laboratory of Physical Chemistry and CNRS Bldg 350, Centre Universitaire, F-91405
Orsay, F-91405 Orsay, France
- Institute of Nuclear Chemistry and Technology, Dorodna, 16, 03-195 Warsaw,
Poland
- Department
of Pharmaceutical
Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Jacek Mirkowski
- Institute of Nuclear Chemistry and Technology, Dorodna, 16, 03-195 Warsaw,
Poland
| | - Filippo Rusconi
- Laboratory of Physical Chemistry and CNRS Bldg 350, Centre Universitaire, F-91405
Orsay, F-91405 Orsay, France
- Muséum National d’Histoire
Naturelle, CNRS, UMR7196 - INSERM, U565 - MNHN USM0503, 57 rue Cuvier, F-75231 Paris Cedex-05, France
| | - Gabriel Kciuk
- Institute of Nuclear Chemistry and Technology, Dorodna, 16, 03-195 Warsaw,
Poland
| | - Pawel B. Wisniowski
- Institute of Nuclear Chemistry and Technology, Dorodna, 16, 03-195 Warsaw,
Poland
| | - Krzysztof Bobrowski
- Institute of Nuclear Chemistry and Technology, Dorodna, 16, 03-195 Warsaw,
Poland
| | - Chantal Houée-Levin
- Laboratory of Physical Chemistry and CNRS Bldg 350, Centre Universitaire, F-91405
Orsay, F-91405 Orsay, France
| |
Collapse
|
6
|
Capuozzo E, Pecci L, Giovannitti F, Baseggio Conrado A, Fontana M. Oxidative and nitrative modifications of enkephalins by human neutrophils: effect of nitroenkephalin on leukocyte functional responses. Amino Acids 2011; 43:875-84. [DOI: 10.1007/s00726-011-1147-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Accepted: 11/03/2011] [Indexed: 11/25/2022]
|
7
|
Stanojević S, Vujić V, Mitić K, Kustrimović N, Kovacević-Jovanović V, Miletić T, Dimitrijević M. Methionine-enkephalin modulation of hydrogen peroxide (H2O2) release by rat peritoneal macrophages involves different types of opioid receptors. Neuropeptides 2008; 42:147-58. [PMID: 18237778 DOI: 10.1016/j.npep.2007.12.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2007] [Revised: 11/15/2007] [Accepted: 12/19/2007] [Indexed: 11/23/2022]
Abstract
We investigated the involvement of specific types of opioid receptors in methionine-enkephalin (MET)-induced modulation of hydrogen peroxide (H2O2) release by rat macrophages primed with sub-optimal concentrations of phorbol myristate acetate (PMA). Peritoneal macrophages in vitro treated with different concentrations of MET were tested for H2O2 release in phenol red assay. In the antagonistic study macrophages were treated with MET and one opioid receptor antagonist, or combination of MET and two or three opioid receptor antagonists. MET decreased H2O2 release in eight individual macrophage samples, and increased it in 10 samples. The increase of H2O2 release induced by MET in macrophages was blocked with combination of opioid receptor antagonists specific delta1,2 and mu receptors, as well as with combination of antagonists specific for delta1,2 and kappa opioid receptors. MET-induced decrease of the H2O2 release in macrophages was prevented by opioid receptor antagonists specific for delta1,2 or mu receptors, and also with combination of two or three opioid receptor antagonists. MET-induced enhancement of H2O2 release was mediated via delta1 or delta2 opioid receptor subtypes, or by mu-kappa opioid receptor functional interactions, while MET-induced suppression involved functional interactions between delta1 and mu, delta2 and mu, or delta1 and kappa opioid receptors. It is possible that individual differences in basal or induced macrophage capacity to produce H2O2 might shape the repertoire of opioid receptors expression and in that way pre-determine the direction of MET-induced changes after the in vitro treatment.
Collapse
MESH Headings
- Animals
- Benzylidene Compounds/pharmacology
- Carcinogens/pharmacology
- Dose-Response Relationship, Drug
- Enkephalin, Methionine/metabolism
- Enkephalin, Methionine/pharmacology
- Hydrogen Peroxide/metabolism
- Macrophages, Peritoneal/drug effects
- Macrophages, Peritoneal/metabolism
- Male
- Naltrexone/analogs & derivatives
- Naltrexone/pharmacology
- Narcotic Antagonists/pharmacology
- Rats
- Rats, Wistar
- Receptors, Opioid/metabolism
- Receptors, Opioid, delta/antagonists & inhibitors
- Receptors, Opioid, delta/metabolism
- Receptors, Opioid, kappa/antagonists & inhibitors
- Receptors, Opioid, kappa/metabolism
- Receptors, Opioid, mu/antagonists & inhibitors
- Receptors, Opioid, mu/metabolism
- Tetradecanoylphorbol Acetate/pharmacology
Collapse
Affiliation(s)
- Stanislava Stanojević
- Institute of Virology, Vaccines and Sera Torlak, Immunology Research Centre Branislav Janković, Vojvode Stepe 458, 11152 Belgrade, Serbia.
| | | | | | | | | | | | | |
Collapse
|
8
|
Deo SH, Barlow MA, Gonzalez L, Yoshishige D, Caffrey JL. Cholinergic location of δ-opioid receptors in canine atria and SA node. Am J Physiol Heart Circ Physiol 2008; 294:H829-38. [DOI: 10.1152/ajpheart.01141.2007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
δ-Opioid receptors (DORs) are associated with ischemic preconditioning and vagal transmission in the sinoatrial (SA) node and atria. Although functional studies suggested that DORs are prejunctional on parasympathetic nerve terminals, their precise location remains unconfirmed. DORs were colocalized in tissue slices and synaptosomes from the canine right atrium and SA node along with cholinergic and adrenergic markers, vesicular acetylcholine transporter (VAChT), and tyrosine hydroxylase (TH). Synapsin I immunofluorescence verified the neural character of tissue structures and isolated synaptosomes. Acetylcholine and norepinephrine measurements suggested the presence of both cholinergic and adrenergic synaptosomes. Fluorescent analysis of VAChT and TH signals indicated that >80% of the synapsin-positive synaptosomes were of cholinergic origin and <8% were adrenergic. DORs colocalized 75–85% with synapsin in tissue slices from both atria and SA node. The colocalization was equally strong (85%) for nodal synaptosomes but less so for atrial synaptosomes (57%). Colocalization between DOR and VAChT was 75–85% regardless of the source. Overlap between DOR and TH was uniformly low, ranging from 8% to 17%. Western blots with synaptosomal extracts confirmed two DOR-positive bands at molecular masses corresponding to those reported for DOR monomers and dimers. The abundance of DOR was greater in nodal synaptosomes than in atrial synaptosomes, largely attributable to a greater abundance of monomers in the SA node. The abundant nodal and atrial DORs predominantly associated with cholinergic nerve terminals support the hypothesis that prejunctional DORs regulate vagal transmission locally within the heart.
Collapse
|
9
|
Foppoli C, Coccia R, Blarzino C, Cini C, Rosei MA. Tetrahydroisoquinoline derivatives of enkephalins: synthesis and properties. Biochem Pharmacol 2002; 63:1885-92. [PMID: 12034373 DOI: 10.1016/s0006-2952(02)00979-6] [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
Tetrahydroisoquinolines (TIQs) are endogenous alkaloid compounds deriving from the non-enzymatic Pictet-Spengler condensation of catecholamines with aldehydes. These compounds are able to unsettle catecholamines uptake and release from synaptosomes and have been detected in urine and in post-mortem Parkinsonian brains. We have obtained in vitro, by the reaction of dopa-enkephalin (dopa-Gly-Gly-Phe-Leu) with acetaldehyde in the presence of rameic ions, a TIQ derivative of Leu-enkephalin. The isolation and the recovery of the peptide was obtained by HPLC. The acid hydrolysis and the subsequent analysis of the peptide lysate by the Amino acid analyser clearly revealed the absence of dopa, while the electrospray ionisation mass spectrometry showed that the sequence of the enkephalin derivative was the following: 3-carboxy-salsolinol-Gly-Gly-Phe-Leu (TIQ-enkephalin). This compound was not a good substrate for microsomal aminopeptidase and pronase with respect to Leu-enkephalin. Tested in the binding assay, the TIQ-enkephalin exhibited a very poor affinity toward the enkephalin receptors. When the TIQ-enkephalin was incubated with tyrosinase or peroxidase/H(2)O(2), the formation of TIQ-opio-melanins occurred.
Collapse
Affiliation(s)
- Cesira Foppoli
- CNR Centre of Molecular Biology c/o University La Sapienza, Piazza le Aldo Moro 5, 00185 Rome, Italy
| | | | | | | | | |
Collapse
|
10
|
Foppoli C, De Marco C, Blarzino C, Coccia R, Mosca L, Rosen MA. Dimers formation by cytochrome c-catalyzed oxidation of tyrosine and enkephalins. Amino Acids 1997. [DOI: 10.1007/bf01372592] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
11
|
Torreilles J, Guérin MC, Roch P. Peroxidase-release associated with phagocytosis in Mytilus galloprovincialis haemocytes. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 1997; 21:267-275. [PMID: 9258608 DOI: 10.1016/s0145-305x(96)00034-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Fluorescence spectra of the supernatant of adherent haemocyte monolayers from Mytilus galloprovincialis, supplemented with homovanillic acid or with a tyrosyl peptide glycylglycyltyrosine (GGY), were recorded before and after stimulation by zymosan. The formation of fluorescent derivatives was observed to have spectral characteristics similar to those of fluorescent compounds generated by the exposure of homovanillic acid or GGY to a horseradish peroxidase/hydrogen peroxide system in vitro. Lucigenine-enhanced chemiluminescence (CLluc) of M. galloprovincialis haemocytes stimulated by zymosan or by phorbol ester (PMA) was measured in the presence and absence of sodium azide, a peroxidase inhibitor. Sodium azide inhibited the CLluc of haemocytes stimulated by zymosan, an effective stimulus for myeloperoxidase secretion in human polymorphonuclear leukocytes, but not the CLluc of haemocytes stimulated by PMA, indicating the presence of peroxidases with some properties of myeloperoxidase, in adherent haemocytes from M. galloprovincialis.
Collapse
Affiliation(s)
- J Torreilles
- UMR CNRS-IFREMER 219 Défense et Résistance chez les Invertébrés Marins, Université de Montpellier II, France
| | | | | |
Collapse
|
12
|
Rosei MA, Coccia R, Blarzino C, Foppoli C, Mosca L. The oxidation of oxytocin and vasopressin by peroxidase/H2O2 system. Amino Acids 1995; 8:385-91. [DOI: 10.1007/bf00806556] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/1993] [Accepted: 12/18/1993] [Indexed: 05/28/2023]
|