1
|
Ježek P, Dlasková A, Engstová H, Špačková J, Tauber J, Průchová P, Kloppel E, Mozheitova O, Jabůrek M. Mitochondrial Physiology of Cellular Redox Regulations. Physiol Res 2024:935269. [PMID: 38647168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024] Open
Abstract
Mitochondria (mt) represent the vital hub of the molecular physiology of the cell, being decision-makers in cell life/death and information signaling, including major redox regulations and redox signaling. Now we review recent advances in understanding mitochondrial redox homeostasis, including superoxide sources and H2O2 consumers, i.e., antioxidant mechanisms, as well as exemplar situations of physiological redox signaling, including the intramitochondrial one and mt-to-cytosol redox signals, which may be classified as acute and long-term signals. This review exemplifies the acute redox signals in hypoxic cell adaptation and upon insulin secretion in pancreatic beta-cells. We also show how metabolic changes under these circumstances are linked to mitochondrial cristae narrowing at higher intensity of ATP synthesis. Also, we will discuss major redox buffers, namely the peroxiredoxin system, which may also promote redox signaling. We will point out that pathological thresholds exist, specific for each cell type, above which the superoxide sources exceed regular antioxidant capacity and the concomitant harmful processes of oxidative stress subsequently initiate etiology of numerous diseases. The redox signaling may be impaired when sunk in such excessive pro-oxidative state.
Collapse
Affiliation(s)
- P Ježek
- Laboratory of Mitochondrial Physiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic.
| | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Venel F, Giovine R, Laurencin D, Špačková J, Mittelette S, Métro TX, Volkringer C, Lafon O, Pourpoint F. Probing oxygen exchange between UiO-66(Zr) MOF and water using 17 O solid-state NMR. Chemistry 2024; 30:e202302731. [PMID: 38227358 DOI: 10.1002/chem.202302731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Indexed: 01/17/2024]
Abstract
The Zr-based Metal Organic Framework (MOF) UiO-66(Zr) is widely employed owing to its good thermal and chemical stabilities. Although the long-range structure of this MOF is preserved in the presence of water during several days, little is known about the formation of defects, which cannot be detected using diffraction techniques. We apply here 17 O solid-state NMR spectroscopy at 18.8 T to investigate the reactivity of UiO-66, through the exchange of oxygen atoms between the different sites of the MOF and water. For that purpose, we have selectively enriched in 17 O isotope the carboxylate groups of UiO-66(Zr) by using it with 17 O-labeled terephthalic acid prepared using mechanochemistry. In the presence of water at 50 °C and a following dehydration at 150 °C, we observe an overall exchange of O atoms between COO- and μ3 -O2- sites. Furthermore, we demonstrate that the three distinct oxygen sites, μ3 -OH, μ3 -O2- and COO- , of UiO-66(Zr) MOF can be enriched in 17 O isotope by post-synthetic hydrothermal treatment in the presence of 17 O-enriched water. These results demonstrate the lability of Zr-O bonds and the reactivity of UiO-66(Zr) with water.
Collapse
Affiliation(s)
- Florian Venel
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - Raynald Giovine
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - Danielle Laurencin
- Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM-ENSCM, 1919 route de Mende, 34095, Montpellier, Cedex 05, France
| | - Jessica Špačková
- Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM-ENSCM, 1919 route de Mende, 34095, Montpellier, Cedex 05, France
| | - Sébastien Mittelette
- Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM-ENSCM, 1919 route de Mende, 34095, Montpellier, Cedex 05, France
| | - Thomas-Xavier Métro
- Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM-ENSCM, 1919 route de Mende, 34095, Montpellier, Cedex 05, France
| | - Christophe Volkringer
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - Olivier Lafon
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - Frédérique Pourpoint
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| |
Collapse
|
3
|
Špačková J, Goldberga I, Yadav R, Cazals G, Lebrun A, Verdié P, Métro TX, Laurencin D. Fast and Cost-Efficient 17 O-Isotopic Labeling of Carboxylic Groups in Biomolecules: From Free Amino Acids to Peptide Chains. Chemistry 2023; 29:e202203014. [PMID: 36333272 DOI: 10.1002/chem.202203014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/04/2022] [Indexed: 11/08/2022]
Abstract
17 O NMR spectroscopy is a powerful technique, which can provide unique information regarding the structure and reactivity of biomolecules. However, the low natural abundance of 17 O (0.04 %) generally requires working with enriched samples, which are not easily accessible. Here, we present simple, fast and cost-efficient 17 O-enrichment strategies for amino acids and peptides by using mechanochemistry. First, five unprotected amino acids were enriched under ambient conditions, consuming only microliter amounts of costly labeled water, and producing pure molecules with enrichment levels up to ∼40 %, yields ∼60-85 %, and no loss of optical purity. Subsequently, 17 O-enriched Fmoc/tBu-protected amino acids were produced on a 1 g/day scale with high enrichment levels. Lastly, a site-selective 17 O-labeling of carboxylic functions in peptide side-chains was achieved for RGD and GRGDS peptides, with ∼28 % enrichment level. For all molecules, 17 O ssNMR spectra were recorded at 14.1 T in reasonable times, making this an important step forward for future NMR studies of biomolecules.
Collapse
Affiliation(s)
| | | | - Rishit Yadav
- ICGM, CNRS, UM, ENSCM, 34293, Montpellier, France
| | | | | | | | | | | |
Collapse
|
4
|
Leroy C, Mittelette S, Félix G, Fabregue N, Špačková J, Gaveau P, Métro TX, Laurencin D. Operando acoustic analysis: a valuable method for investigating reaction mechanisms in mechanochemistry. Chem Sci 2022; 13:6328-6334. [PMID: 35733892 PMCID: PMC9159074 DOI: 10.1039/d2sc01496c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/05/2022] [Indexed: 11/21/2022] Open
Abstract
We present a new operando approach for following reactions taking place in mechanochemistry, relying on the analysis of the evolution of the sound during milling. We show that differences in...
Collapse
Affiliation(s)
- César Leroy
- ICGM, Univ Montpellier, CNRS, ENSCM Montpellier France
| | | | - Gautier Félix
- ICGM, Univ Montpellier, CNRS, ENSCM Montpellier France
| | | | | | | | | | | |
Collapse
|
5
|
Chen C, Goldberga I, Gaveau P, Mittelette S, Špačková J, Mullen C, Petit I, Métro T, Alonso B, Gervais C, Laurencin D. Looking into the dynamics of molecular crystals of ibuprofen and terephthalic acid using 17 O and 2 H nuclear magnetic resonance analyses. Magn Reson Chem 2021; 59:975-990. [PMID: 33615550 PMCID: PMC8518726 DOI: 10.1002/mrc.5141] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/15/2021] [Accepted: 02/18/2021] [Indexed: 05/09/2023]
Abstract
Oxygen-17 and deuterium are two quadrupolar nuclei that are of interest for studying the structure and dynamics of materials by solid-state nuclear magnetic resonance (NMR). Here, 17 O and 2 H NMR analyses of crystalline ibuprofen and terephthalic acid are reported. First, improved 17 O-labelling protocols of these molecules are described using mechanochemistry. Then, dynamics occurring around the carboxylic groups of ibuprofen are studied considering variable temperature 17 O and 2 H NMR data, as well as computational modelling (including molecular dynamics simulations). More specifically, motions related to the concerted double proton jump and the 180° flip of the H-bonded (-COOH)2 unit in the crystal structure were looked into, and it was found that the merging of the C=O and C-OH 17 O resonances at high temperatures cannot be explained by the sole presence of one of these motions. Lastly, preliminary experiments were performed with a 2 H-17 O diplexer connected to the probe. Such configurations can allow, among others, 2 H and 17 O NMR spectra to be recorded at different temperatures without needing to tune or to change probe configurations. Overall, this work offers a few leads which could be of use in future studies of other materials using 17 O and 2 H NMR.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Ivan Petit
- Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), UMR 7574, Sorbonne Université, CNRSParisFrance
| | | | - Bruno Alonso
- ICGM, Univ Montpellier, CNRS, ENSCMMontpellierFrance
| | - Christel Gervais
- Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), UMR 7574, Sorbonne Université, CNRSParisFrance
| | | |
Collapse
|
6
|
Špačková J, Fabra C, Cazals G, Hubert-Roux M, Schmitz-Afonso I, Goldberga I, Berthomieu D, Lebrun A, Métro TX, Laurencin D. Cost-efficient and user-friendly 17O/ 18O labeling procedures of fatty acids using mechanochemistry. Chem Commun (Camb) 2021; 57:6812-6815. [PMID: 34143162 PMCID: PMC8265319 DOI: 10.1039/d1cc02165f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 05/27/2021] [Indexed: 01/12/2023]
Abstract
Two mechanochemical procedures for 17O/18O-isotope labeling of fatty acids are reported: a carboxylic acid activation/hydrolysis approach and a saponification approach. The latter route allowed first-time enrichment of important polyunsaturated fatty acids (PUFAs) including docosahexaenoic acid (DHA). Overall, a total of 9 pure labeled products were isolated in high yields (≥80%) and with high enrichment levels (≥37% average labeling of C=O and C-OH carboxylic oxygen atoms), under mild conditions, and in short time (
Collapse
Affiliation(s)
| | - Charlyn Fabra
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | | | - Marie Hubert-Roux
- Normandie Univ., COBRA UMR 6014 and FR 3038 Univ. Rouen, INSA Rouen, CNRS IRCOF, Mont-Saint-Aignan, France
| | - Isabelle Schmitz-Afonso
- Normandie Univ., COBRA UMR 6014 and FR 3038 Univ. Rouen, INSA Rouen, CNRS IRCOF, Mont-Saint-Aignan, France
| | - Ieva Goldberga
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | | | | | | | | |
Collapse
|
7
|
Špačková J, Fabra C, Mittelette S, Gaillard E, Chen CH, Cazals G, Lebrun A, Sene S, Berthomieu D, Chen K, Gan Z, Gervais C, Métro TX, Laurencin D. Unveiling the Structure and Reactivity of Fatty-Acid Based (Nano)materials Thanks to Efficient and Scalable 17O and 18O-Isotopic Labeling Schemes. J Am Chem Soc 2020; 142:21068-21081. [PMID: 33264006 PMCID: PMC7877562 DOI: 10.1021/jacs.0c09383] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Indexed: 12/16/2022]
Abstract
Fatty acids are ubiquitous in biological systems and widely used in materials science, including for the formulation of drugs and the surface-functionalization of nanoparticles. However, important questions regarding the structure and reactivity of these molecules are still to be elucidated, including their mode of binding to certain metal cations or materials surfaces. In this context, we have developed novel, efficient, user-friendly, and cost-effective synthetic protocols based on ball-milling, for the 17O and 18O isotopic labeling of two key fatty acids which are widely used in (nano)materials science, namely stearic and oleic acid. Labeled molecules were analyzed by 1H and 13C solution NMR, IR spectroscopy, and mass spectrometry (ESI-TOF and LC-MS), as well as 17O solid state NMR (for the 17O labeled species). In both cases, the labeling procedures were scaled-up to produce up to gram quantities of 17O- or 18O-enriched molecules in just half-a-day, with very good synthetic yields (all ≥84%) and enrichment levels (up to an average of 46% per carboxylic oxygen). The 17O-labeled oleic acid was then used for the synthesis of a metal soap (Zn-oleate) and the surface-functionalization of ZnO nanoparticles (NPs), which were characterized for the first time by high-resolution 17O NMR (at 14.1 and 35.2 T). This allowed very detailed insight into (i) the coordination mode of the oleate ligand in Zn-oleate to be achieved (including information on Zn···O distances) and (ii) the mode of attachment of oleic-acid at the surface of ZnO (including novel information on its photoreactivity upon UV-irradiation). Overall, this work demonstrates the high interest of these fatty acid-enrichment protocols for understanding the structure and reactivity of a variety of functional (nano)materials systems using high resolution analyses like 17O NMR.
Collapse
Affiliation(s)
| | - Charlyn Fabra
- ICGM, Univ Montpellier, CNRS,
ENSCM, Montpellier 34095, France
| | | | | | - Chia-Hsin Chen
- ICGM, Univ Montpellier, CNRS,
ENSCM, Montpellier 34095, France
| | | | - Aurélien Lebrun
- IBMM, Univ Montpellier, CNRS,
ENSCM, Montpellier 34095, France
| | - Saad Sene
- ICGM, Univ Montpellier, CNRS,
ENSCM, Montpellier 34095, France
| | | | - Kuizhi Chen
- National High Magnetic Field Laboratory (NHMFL),
Florida State University, Tallahassee, Florida 32306,
United States
| | - Zhehong Gan
- National High Magnetic Field Laboratory (NHMFL),
Florida State University, Tallahassee, Florida 32306,
United States
| | - Christel Gervais
- Laboratoire de Chimie de la Matière
Condensée de Paris (LCMCP), UMR 7574, Sorbonne Université,
CNRS, 75005 Paris, France
| | | | | |
Collapse
|
8
|
Špačková J, Svobodová E, Hartman T, Stibor I, Kopecká J, Cibulková J, Chudoba J, Cibulka R. Visible Light [2+2] Photocycloaddition Mediated by Flavin Derivative Immobilized on Mesoporous Silica. ChemCatChem 2017. [DOI: 10.1002/cctc.201601654] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jessica Špačková
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 166 28 Prague 6 Czech Republic
| | - Eva Svobodová
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 166 28 Prague 6 Czech Republic
| | - Tomáš Hartman
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 166 28 Prague 6 Czech Republic
| | - Ivan Stibor
- Institute for Nanomaterials, Advanced Technologies and Innovations; Technical University of Liberec; Studentská 2 461 17 Liberec Czech Republic
| | - Jitka Kopecká
- Department of Physics and Measurements; University of Chemistry and Technology, Prague; Technická 5 166 28 Prague 6 Czech Republic
| | - Jana Cibulková
- Central laboratories; University of Chemistry and Technology, Prague; Technická 5 166 28 Prague 6 Czech Republic
| | - Josef Chudoba
- Central laboratories; University of Chemistry and Technology, Prague; Technická 5 166 28 Prague 6 Czech Republic
| | - Radek Cibulka
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 166 28 Prague 6 Czech Republic
| |
Collapse
|
9
|
Zítková M, Špačková J, Jureníková P. 79 Supervisor of the Adaptation Process in Haemato-oncology. Eur J Oncol Nurs 2012. [DOI: 10.1016/s1462-3889(12)70092-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|