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Tian Z, Jiang X, Chen Z, Huang C, Qian F. Quantifying Protein Shape to Elucidate Its Influence on Solution Viscosity in High-Concentration Electrolyte Solutions. Mol Pharm 2024; 21:1719-1728. [PMID: 38411904 DOI: 10.1021/acs.molpharmaceut.3c01075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Therapeutic proteins with a high concentration and low viscosity are highly desirable for subcutaneous and certain local injections. The shape of a protein is known to influence solution viscosity; however, the precise quantification of protein shape and its relative impact compared to other factors like charge-charge interactions remains unclear. In this study, we utilized seven model proteins of varying shapes and experimentally determined their shape factors (v) based on Einstein's viscosity theory, which correlate strongly with the ratios of the proteins' surface area to the 2/3 power of their respective volumes, based on protein crystal structures resolved experimentally or predicted by AlphaFold. This finding confirms the feasibility of computationally estimating protein shape factors from amino acid sequences alone. Furthermore, our results demonstrated that, in high-concentration electrolyte solutions, a more spherical protein shape increases the protein's critical concentration (C*), the transition concentration beyond which protein viscosity increases exponentially relative to concentration increases. In summary, our work elucidates protein shape as a key determinant of solution viscosity through quantitative analysis and comparison with other contributing factors. This provides insights into molecular engineering strategies to optimize the molecular design of therapeutic proteins, thus optimizing their viscosity.
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Affiliation(s)
- Zhou Tian
- School of Pharmaceutical Sciences, Beijing Frontier Research Center for Biological Structure, and Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China
| | - Xuling Jiang
- School of Pharmaceutical Sciences, Beijing Frontier Research Center for Biological Structure, and Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China
| | - Zhidong Chen
- School of Pharmaceutical Sciences, Beijing Frontier Research Center for Biological Structure, and Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China
| | - Chengnan Huang
- School of Pharmaceutical Sciences, Beijing Frontier Research Center for Biological Structure, and Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China
| | - Feng Qian
- School of Pharmaceutical Sciences, Beijing Frontier Research Center for Biological Structure, and Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, P. R. China
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2
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Foressi NN, Rodríguez LC, Celej MS. Heterotypic liquid-liquid phase separation of tau and α-synuclein: Implications for overlapping neuropathologies. BIOCHIMICA ET BIOPHYSICA ACTA. PROTEINS AND PROTEOMICS 2023; 1871:140950. [PMID: 37574035 DOI: 10.1016/j.bbapap.2023.140950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/15/2023]
Abstract
Tauopathies and synucleinopathies are characterized by the aggregation of Tau and α-synuclein (AS) into amyloid structures, respectively. Individuals with these neuropathies have an elevated risk of developing subsequent neurodegenerative or comorbid disorders. Intriguingly, post-mortem brain examinations have revealed co-localization of Tau and AS aggregates, suggesting a synergistic pathological relationship with an adverse prognosis. The role of liquid-liquid phase separation (LLPS) in the development of neurodegenerative diseases is currently receiving significant attention, as it can contribute to the aggregation and co-deposition of amyloidogenic proteins. In this study, we investigated the phase separation behavior of Tau and AS under various insults, some of which are implicated in disease progression. Our findings demonstrate the formation of heterotypic droplets composed of Tau and AS at physiologically relevant mole ratios that mimic neurons' soma and terminal buttons. Importantly, these heterotypic droplets exhibit increased resistance to electrostatic screening compared to homotypic condensates. Moreover, we observed that biologically relevant biomolecules, known to be dysregulated in disease, exert different effects on these droplets. Additionally, we provide evidence that phase separation itself influences the amyloid aggregation of Tau and AS, underscoring the significance of this process in the development of aggregopathies.
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Affiliation(s)
- Nahuel N Foressi
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Leandro Cruz Rodríguez
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - M Soledad Celej
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
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Hautke A, Ebbinghaus S. The emerging role of ATP as a cosolute for biomolecular processes. Biol Chem 2023; 404:897-908. [PMID: 37656203 DOI: 10.1515/hsz-2023-0202] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 08/09/2023] [Indexed: 09/02/2023]
Abstract
ATP is an important small molecule that appears at outstandingly high concentration within the cellular medium. Apart from its use as a source of energy and a metabolite, there is increasing evidence for important functions as a cosolute for biomolecular processes. Owned to its solubilizing kosmotropic triphosphate and hydrophobic adenine moieties, ATP is a versatile cosolute that can interact with biomolecules in various ways. We here use three models to categorize these interactions and apply them to review recent studies. We focus on the impact of ATP on biomolecular solubility, folding stability and phase transitions. This leads us to possible implications and therapeutic interventions in neurodegenerative diseases.
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Affiliation(s)
- Alexander Hautke
- Institut für Physikalische und Theoretische Chemie, TU Braunschweig, Rebenring 56, D-38106 Braunschweig, Germany
- Lehrstuhl für Biophysikalische Chemie and Research Center Chemical Sciences and Sustainability, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - Simon Ebbinghaus
- Institut für Physikalische und Theoretische Chemie, TU Braunschweig, Rebenring 56, D-38106 Braunschweig, Germany
- Lehrstuhl für Biophysikalische Chemie and Research Center Chemical Sciences and Sustainability, Ruhr-Universität Bochum, D-44780 Bochum, Germany
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Cordeiro Y, Freire MHO, Wiecikowski AF, do Amaral MJ. (Dys)functional insights into nucleic acids and RNA-binding proteins modulation of the prion protein and α-synuclein phase separation. Biophys Rev 2023; 15:577-589. [PMID: 37681103 PMCID: PMC10480379 DOI: 10.1007/s12551-023-01067-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 05/22/2023] [Indexed: 09/09/2023] Open
Abstract
Prion diseases are prototype of infectious diseases transmitted by a protein, the prion protein (PrP), and are still not understandable at the molecular level. Heterogenous species of aggregated PrP can be generated from its monomer. α-synuclein (αSyn), related to Parkinson's disease, has also shown a prion-like pathogenic character, and likewise PrP interacts with nucleic acids (NAs), which in turn modulate their aggregation. Recently, our group and others have characterized that NAs and/or RNA-binding proteins (RBPs) modulate recombinant PrP and/or αSyn condensates formation, and uncontrolled condensation might precede pathological aggregation. Tackling abnormal phase separation of neurodegenerative disease-related proteins has been proposed as a promising therapeutic target. Therefore, understanding the mechanism by which polyanions, like NAs, modulate phase transitions intracellularly, is key to assess their role on toxicity promotion and neuronal death. Herein we discuss data on the nucleic acids binding properties and phase separation ability of PrP and αSyn with a special focus on their modulation by NAs and RBPs. Furthermore, we provide insights into condensation of PrP and/or αSyn in the light of non-trivial subcellular locations such as the nuclear and cytosolic environments.
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Affiliation(s)
- Yraima Cordeiro
- Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, bloco B, subsolo Sala 36, Rio de Janeiro, RJ 21941-902 Brazil
| | - Maria Heloisa O. Freire
- Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, bloco B, subsolo Sala 36, Rio de Janeiro, RJ 21941-902 Brazil
| | - Adalgisa Felippe Wiecikowski
- Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, bloco B, subsolo Sala 36, Rio de Janeiro, RJ 21941-902 Brazil
| | - Mariana Juliani do Amaral
- Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, bloco B, subsolo Sala 36, Rio de Janeiro, RJ 21941-902 Brazil
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Mori T, Yoshida N. Tuning the ATP-ATP and ATP-disordered protein interactions in high ATP concentration by altering water models. J Chem Phys 2023; 159:035102. [PMID: 37458354 DOI: 10.1063/5.0158046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 06/27/2023] [Indexed: 07/20/2023] Open
Abstract
The adenosine triphosphate (ATP)-protein interactions have been of great interest since the recent experimental finding of ATP's role as a hydrotrope. The interaction between ATP and disordered proteins is fundamental to the dissolution of protein aggregates and the regulation of liquid-liquid phase separation by ATP. Molecular dynamics simulation is a powerful tool for analyzing these interactions in molecular detail but often suffers from inaccuracies in describing disordered proteins and ATPs in high concentrations. Recently, several water models have been proposed to improve the description of the protein-disordered states, yet how these models work with ATP has not been explored. To this end, here, we study how water models affect ATP and alter the ATP-ATP and ATP-protein interactions for the intrinsically disordered protein, α-Synuclein. Three water models, TIP4P-D, OPC, and TIP3P, are compared, while the protein force field is fixed to ff99SBildn. The results show that ATP over-aggregates into a single cluster in TIP3P water, but monomers and smaller clusters are found in TIP4P-D and OPC waters. ATP-protein interaction is also over-stabilized in TIP3P, whereas repeated binding/unbinding of ATP to α-Synuclein is observed in OPC and TIP4P-D waters, which is in line with the recent nuclear magnetic resonance experiment. The adenine ring-mediated interaction is found to play a major role in ATP-ATP and ATP-protein contacts. Interestingly, changing Mg2+ into Na+ strengthened the electrostatic interaction and promoted ATP oligomerization and ATP-α-Synuclein binding. Overall, this study shows that changing the water model can be an effective approach to improve the properties of ATP in high concentration.
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Affiliation(s)
- Toshifumi Mori
- Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
- Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
| | - Norio Yoshida
- Graduate School of Informatics, Nagoya University, Chikusa, Nagoya 464-8601, Japan
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6
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Rodríguez LC, Foressi NN, Celej MS. Modulation of α-synuclein phase separation by biomolecules. BIOCHIMICA ET BIOPHYSICA ACTA. PROTEINS AND PROTEOMICS 2023; 1871:140885. [PMID: 36481455 DOI: 10.1016/j.bbapap.2022.140885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Liquid-liquid phase separation (LLPS) is currently recognized as a common mechanism involved in the regulation of a number of cellular functions. On the other hand, aberrant phase separation has been linked to the biogenesis of several neurodegenerative disorders since many proteins that undergo LLPS are also found in pathological aggregates. The formation of mixed protein coacervates may constitute a risk factor in overlapping neuropathologies, such as Parkinson's (PD) and Alzheimer's (AD) diseases. In this work, we evaluated the homotypic and heterotypic phase behaviour of the PD-related protein α-synuclein (AS) in the presence of the biologically relevant molecules ATP, polyamines, and the AD-related protein Tau. We found that AS exhibits a low propensity to form homotypic liquid droplets, yet phase separates into liquid-like or solid-like phases depending on the interacting biomolecule. We further demonstrated the synergistic droplet formation of AS and Tau providing support for a mechanism in which mixed condensates might contribute to the biogenesis of AS/Tau pathologies.
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Affiliation(s)
- Leandro Cruz Rodríguez
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Nahuel N Foressi
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - M Soledad Celej
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
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Nishida K, Anada T, Tanaka M. Roles of interfacial water states on advanced biomedical material design. Adv Drug Deliv Rev 2022; 186:114310. [PMID: 35487283 DOI: 10.1016/j.addr.2022.114310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/12/2022] [Accepted: 04/21/2022] [Indexed: 12/15/2022]
Abstract
When biomedical materials come into contact with body fluids, the first reaction that occurs on the material surface is hydration; proteins are then adsorbed and denatured on the hydrated material surface. The amount and degree of denaturation of adsorbed proteins affect subsequent cell behavior, including cell adhesion, migration, proliferation, and differentiation. Biomolecules are important for understanding the interactions and biological reactions of biomedical materials to elucidate the role of hydration in biomedical materials and their interaction partners. Analysis of the water states of hydrated materials is complicated and remains controversial; however, knowledge about interfacial water is useful for the design and development of advanced biomaterials. Herein, we summarize recent findings on the hydration of synthetic polymers, supramolecular materials, inorganic materials, proteins, and lipid membranes. Furthermore, we present recent advances in our understanding of the classification of interfacial water and advanced polymer biomaterials, based on the intermediate water concept.
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Affiliation(s)
- Kei Nishida
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Japan(1)
| | - Takahisa Anada
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan.
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Nishida K, Nishimura SN, Tanaka M. Selective Accumulation to Tumor Cells with Coacervate Droplets Formed from a Water-Insoluble Acrylate Polymer. Biomacromolecules 2022; 23:1569-1580. [PMID: 35089709 DOI: 10.1021/acs.biomac.1c01343] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Selective targeting of specific cells without the use of biological ligands has not been achieved. In the present study, we revealed that the coacervate droplets formed from poly(2-methoxyethyl acrylate) (PMEA) and its derivatives selectively accumulated to tumor cells. PMEA derivatives, which are insoluble acrylate polymers, induced coacervation in water to form polymer-dense droplets via hydrophobic interaction. Interestingly, the accumulation of coacervate droplets to tumor cells was involved in the bound water content of PMEA derivatives. Coacervate droplets with a high bound water content accumulated and internalized up to 36.6-fold higher in HeLa cervical tumor cells than in normal human fibroblasts (NHDF). Moreover, the interactions between coacervate droplets and plasma membrane components such as CD44 played a key role in this accumulation process. Therefore, coacervate droplets formed from PMEA derivatives have great clinical potential in tumor cell detection, development of alternative tumor-targeting ligands, and optimization of drug delivery carriers.
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Affiliation(s)
- Kei Nishida
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shin-Nosuke Nishimura
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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Insight into the protein salting-in mechanism of arginine, magnesium chloride and ethylene glycol: Solvent interaction with aromatic solutes. Int J Biol Macromol 2021; 188:670-677. [PMID: 34400229 DOI: 10.1016/j.ijbiomac.2021.08.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/01/2021] [Accepted: 08/09/2021] [Indexed: 11/18/2022]
Abstract
Key factors in the salting-in effects on proteins of additives are their interactions with aromatic groups. We studied the interaction of four aromatic solutes, benzyl alcohol (BA), phenol, 4-hydroxybenzyl alcohol (4-HBA) and methyl gallate (MG), with different salting-in additives, arginine hydrochloride (ArgHCl), magnesium chloride (MgCl2), ethylene glycol (EG), and guanidine hydrochloride (GdnHCl) using solubility measurements. We used sodium chloride (NaCl) as a control. MgCl2 decreased the solubility of the four aromatic solutes with weak solute dependence. In contrast, ArgHCl, GdnHCl, and EG increased the solubility of four aromatic solutes with a similar solute dependence. Their salting-in effects were weaker on BA and 4-HBA and stronger on phenol and MG. These results indicate that attached groups alter the aromatic properties, affecting the interactions between the benzene ring and these three additives. More importantly, the observed results demonstrate that the salting-in mechanism is different between MgCl2, EG and ArgHCl, which should play a role in their effects on protein solubility.
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Keller RM, Beaver LM, Reardon PN, Prater MC, Truong L, Robinson MM, Tanguay RL, Stevens JF, Hord NG. Nitrate-induced improvements in exercise performance are coincident with exuberant changes in metabolic genes and the metabolome in zebrafish ( Danio rerio) skeletal muscle. J Appl Physiol (1985) 2021; 131:142-157. [PMID: 34043471 PMCID: PMC8325611 DOI: 10.1152/japplphysiol.00185.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 11/22/2022] Open
Abstract
Dietary nitrate supplementation improves exercise performance by reducing the oxygen cost of exercise and enhancing skeletal muscle function. However, the mechanisms underlying these effects are not well understood. The purpose of this study was to assess changes in skeletal muscle energy metabolism associated with exercise performance in a zebrafish model. Fish were exposed to sodium nitrate (60.7 mg/L, 303.5 mg/L, 606.9 mg/L), or control water, for 21 days and analyzed at intervals (5, 10, 20, 30, 40 cm/s) during a 2-h strenuous exercise test. We measured oxygen consumption during an exercise test and assessed muscle nitrate concentrations, gene expression, and the muscle metabolome before, during, and after exercise. Nitrate exposure reduced the oxygen cost of exercise and increased muscle nitrate concentrations at rest, which were reduced with increasing exercise duration. In skeletal muscle, nitrate treatment upregulated expression of genes central to nutrient sensing (mtor), redox signaling (nrf2a), and muscle differentiation (sox6). In rested muscle, nitrate treatment increased phosphocreatine (P = 0.002), creatine (P = 0.0005), ATP (P = 0.0008), ADP (P = 0.002), and AMP (P = 0.004) compared with rested-control muscle. Following the highest swimming speed, concentration of phosphocreatine (P = 8.0 × 10-5), creatine (P = 6.0 × 10-7), ATP (P = 2.0 × 10-6), ADP (P = 0.0002), and AMP (P = 0.004) decreased compared with rested nitrate muscle. Our data suggest nitrate exposure in zebrafish lowers the oxygen cost of exercise by changing the metabolic programming of muscle prior to exercise and increasing availability of energy-rich metabolites required for exercise.NEW & NOTEWORTHY We show that skeletal muscle nitrate concentration is higher with supplementation at rest and was lower in groups with increasing exercise duration in a zebrafish model. The higher availability of nitrate at rest is associated with upregulation of key nutrient-sensing genes and greater availability of energy-producing metabolites (i.e., ATP, phosphocreatine, glycolytic intermediates). Overall, nitrate supplementation may lower oxygen cost of exercise through improved fuel availability resulting from metabolic programming of muscle prior to exercise.
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Affiliation(s)
- Rosa M Keller
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon
| | - Laura M Beaver
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon
- Linus Pauling Institute, Oregon State University, Corvallis, Oregon
| | - Patrick N Reardon
- Linus Pauling Institute, Oregon State University, Corvallis, Oregon
- Nuclear Magnetic Resonance Facility, Oregon State University, Corvallis, Oregon
| | - Mary C Prater
- Department of Foods and Nutrition, College of Family and Consumer Sciences, University of Georgia, Athens, Georgia
| | - Lisa Truong
- Sinnhuber Aquatic Research Laboratory and the Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon
| | - Matthew M Robinson
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon
| | - Robyn L Tanguay
- Sinnhuber Aquatic Research Laboratory and the Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon
| | - Jan F Stevens
- Linus Pauling Institute, Oregon State University, Corvallis, Oregon
- College of Pharmacy, Oregon State University, Corvallis, Oregon
| | - Norman G Hord
- OU Health, Harold Hamm Diabetes Center, Department of Nutritional Sciences, College of Allied Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
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