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Lee KH, Ali NF, Lee SH, Zhang Z, Burdick M, Beaulac ZJ, Petruncio G, Li L, Xiang J, Chung EM, Foreman KW, Noble SM, Shim YM, Paige M. Substrate-dependent modulation of the leukotriene A 4 hydrolase aminopeptidase activity and effect in a murine model of acute lung inflammation. Sci Rep 2022; 12:9443. [PMID: 35676292 PMCID: PMC9177663 DOI: 10.1038/s41598-022-13238-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 04/12/2022] [Indexed: 11/09/2022] Open
Abstract
The aminopeptidase activity (AP) of the leukotriene A4 hydrolase (LTA4H) enzyme has emerged as a therapeutic target to modulate host immunity. Initial reports focused on the benefits of augmenting the LTA4H AP activity and clearing its putative pro-inflammatory substrate Pro-Gly-Pro (PGP). However, recent reports have introduced substantial complexity disconnecting the LTA4H modulator 4-methoxydiphenylmethane (4MDM) from PGP as follows: (1) 4MDM inhibits PGP hydrolysis and subsequently inhibition of LTA4H AP activity, and (2) 4MDM activates the same enzyme target in the presence of alternative substrates. Differential modulation of LTA4H by 4MDM was probed in a murine model of acute lung inflammation, which showed that 4MDM modulates the host neutrophilic response independent of clearing PGP. X-ray crystallography showed that 4MDM and PGP bind at the zinc binding pocket and no allosteric binding was observed. We then determined that 4MDM modulation is not dependent on the allosteric binding of the ligand, but on the N-terminal side chain of the peptide. In conclusion, our study revealed that a peptidase therapeutic target can interact with its substrate and ligand in complex biochemical mechanisms. This raises an important consideration when ligands are designed to explain some of the unpredictable outcomes observed in therapeutic discovery targeting LTA4H.
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Affiliation(s)
- Kyung Hyeon Lee
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, VA, 20110, USA
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, 503 Robert Grant Ave, Silver Spring, MD, 20910, USA
| | - Nadia Fazal Ali
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, VA, 20110, USA
| | - Soo Hyeon Lee
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, 503 Robert Grant Ave, Silver Spring, MD, 20910, USA
| | - Zhimin Zhang
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Virginia, PO Box 800546, Charlottesville, VA, 22908, USA
| | - Marie Burdick
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Virginia, PO Box 800546, Charlottesville, VA, 22908, USA
| | - Zachary J Beaulac
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, VA, 20110, USA
| | - Greg Petruncio
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, VA, 20110, USA
| | - Linxia Li
- Department of Obstetrics and Gynecology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, 358 Datong Road, Shanghai, 200137, China
| | - Jiangdong Xiang
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Ezra M Chung
- STCube Pharmaceutical, Inc., 401 Professional Dr, Gaithersburg, MD, 20879, USA
| | - Kenneth W Foreman
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, VA, 20110, USA
| | - Schroeder M Noble
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, 503 Robert Grant Ave, Silver Spring, MD, 20910, USA.
| | - Yun M Shim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Virginia, PO Box 800546, Charlottesville, VA, 22908, USA.
| | - Mikell Paige
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, VA, 20110, USA.
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Li G, Zhao Y, Li Y, Chen Y, Jin W, Sun G, Han R, Tian Y, Li H, Kang X. Weighted gene coexpression network analysis identifies specific transcriptional modules and hub genes related to intramuscular fat traits in chicken breast muscle. J Cell Biochem 2019; 120:13625-13639. [PMID: 30937957 DOI: 10.1002/jcb.28636] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/15/2019] [Accepted: 02/28/2019] [Indexed: 12/31/2022]
Abstract
Intramuscular fat (IMF) traits are important factors that influence meat quality. However, the molecular regulatory mechanisms that underlie this trait in chickens are still poorly understood at the gene coexpression level. Here, we performed a weighted gene coexpression network analysis between IMF traits and transcriptome profile in breast muscle in the Chinese domestic Gushi chicken breed at 6, 14, 22, and 30 weeks. A total of 26 coexpressed gene modules were identified. Six modules, which included the dark gray, purple, cyan, pink, light cyan, and blue modules, showed a significant positive correlation (P < 0.05) with IMF traits. The strongest correlation was observed between the dark gray module and IMF content (r = 0.85; P = 4e-04) and between the blue module and different fatty acid content (r = 0.87~0.91; P = 5e-05~2e-04). Enrichment analysis showed that the enrichment of biological processes, such as fatty acid metabolic process, fat cell differentiation, acylglycerol metabolic process, and glycerolipid metabolism were significantly different in the six modules. In addition, the 32, 24, 4, 7, 6, and 25 hub genes were identified from the blue, pink, light cyan, cyan, dark gray, and purple modules, respectively. These hub genes are involved in multiple links to fatty acid metabolism, phospholipid metabolism, cholesterol metabolism, diverse cellular behaviors, and cell events. These results provide novel insights into the molecular regulatory mechanisms for IMF-related traits in chicken and may also help to uncover the formation mechanism for excellent meat quality traits in local breeds of Chinese chicken.
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Affiliation(s)
- Guoxi Li
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
| | - Yinli Zhao
- Department of Animal Science, College of Biological Engineering, Henan University of Technology, Zheng Zhou, Henan, P. R. China
| | - Yuanfang Li
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
| | - Yi Chen
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
| | - Wenjiao Jin
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
| | - Guirong Sun
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
| | - Ruili Han
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
| | - Yadong Tian
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
| | - Hong Li
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
| | - Xiangtao Kang
- Department of Animal Production Systems and Engineering, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng Zhou, Henan, P. R. China
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Torres MJ, Fierro A, Pessoa-Mahana CD, Romero-Parra J, Cabrera G, Faúndez M. Effect of alpha lipoic acid on leukotriene A 4 hydrolase. Eur J Pharmacol 2017; 799:41-47. [PMID: 28132911 DOI: 10.1016/j.ejphar.2017.01.038] [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: 09/07/2016] [Revised: 01/25/2017] [Accepted: 01/25/2017] [Indexed: 10/20/2022]
Abstract
Leukotriene A4 hydrolase is a soluble enzyme with epoxide hydrolase and aminopeptidase activities catalysing the conversion of leukotriene A4 to leukotriene B4 and the hydrolysis of the peptide proline-glycine-proline. Imbalances in leukotriene B4 synthesis are related to several pathologic conditions. Currently there are no available drugs capable to modulate the synthesis of leukotriene B4 or to block its receptors. Here we show the inhibitory profile of alpha lipoic acid on the activity of leukotriene A4 Hydrolase. Alpha lipoic acid inhibited both activities of the enzyme at concentrations lower than 10μM. The 5-lipoxygenase inhibitor zileuton, or the 5-lipoxygenase activating protein inhibitor MK-886, were unable to inhibit the activity of the enzyme. Acute promyelocytic leukaemia HL-60 cells were differentiated to leukotriene A4 hydrolase expressing neutrophil-like cells. Alpha lipoic acid inhibited the aminopeptidase activity of the cytosolic fraction from neutrophil-like cells but had no effect on the cytosolic fraction from undifferentiated cells. Docking and molecular dynamic approximations revealed that alpha lipoic acid participates in electrostatic interactions with K-565 and R-563, which are key residues for the carboxylate group recognition of endogenous substrates by the enzyme. Alpha lipoic acid is a compound widely used in clinical practice, most of its therapeutic effects are associated with its antioxidants properties, however, antioxidant effect alone is unable to explain all clinical effects observed with alpha lipoic acid. Our results invite to evaluate the significance of the inhibitory effect of alpha lipoic acid on the catalytic activity of leukotriene A4 hydrolase using in vivo models.
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Affiliation(s)
- María José Torres
- Laboratorio de Farmacología y Toxicología Molecular, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile; Laboratorio de Simulación Molecular, Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Chile
| | - Angélica Fierro
- Laboratorio de Simulación Molecular, Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Chile
| | - C David Pessoa-Mahana
- Laboratorio de Diseño y Síntesis de Ligandos Cannabinoides, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile
| | - Javier Romero-Parra
- Laboratorio de Farmacología y Toxicología Molecular, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile; Laboratorio de Diseño y Síntesis de Ligandos Cannabinoides, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile
| | - Gonzalo Cabrera
- Laboratorio de Biología Celular, Programa de Biología Celular y Molecular, Instituto de Ciencias Biomedicas, Facultad de Medicina, Universidad de Chile, Chile
| | - Mario Faúndez
- Laboratorio de Farmacología y Toxicología Molecular, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile.
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Appiah-Kubi P, Soliman ME. Dual anti-inflammatory and selective inhibition mechanism of leukotriene A4 hydrolase/aminopeptidase: insights from comparative molecular dynamics and binding free energy analyses. J Biomol Struct Dyn 2016; 34:2418-33. [DOI: 10.1080/07391102.2015.1117991] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Patrick Appiah-Kubi
- Molecular Modelling and Drug Design Research Group, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban 4001, South Africa
| | - Mahmoud E.S. Soliman
- Molecular Modelling and Drug Design Research Group, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban 4001, South Africa
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Mazola Y, Guirola O, Palomares S, Chinea G, Menéndez C, Hernández L, Musacchio A. A comparative molecular dynamics study of thermophilic and mesophilic β-fructosidase enzymes. J Mol Model 2015; 21:228. [PMID: 26267297 DOI: 10.1007/s00894-015-2772-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 07/20/2015] [Indexed: 02/02/2023]
Abstract
Arabidopsis thaliana cell wall invertase 1 (AtcwINV1) and Thermotoga maritima β-fructosidase (BfrA) are among the best structurally studied members of the glycoside hydrolase family 32. Both enzymes hydrolyze sucrose as the main substrate but differ strongly in their thermal stability. Mesophilic AtcwINV1 and thermophilic BfrA have divergent sequence similarities in the N-terminal five bladed β-propeller catalytic domain (31 %) and the C-terminal β-sandwich domain (15 %) of unknown function. The two enzymes were subjected to 200 ns molecular dynamics simulations at 300 K (27 °C) and 353 K (80 °C). Regular secondary structure regions, but not loops, in AtcwINV1 and BfrA showed no significant fluctuation differences at both temperatures. BfrA was more rigid than AtcwINV1 at 300 K. The simulation at 353 K did not alter the structural stability of BfrA, but did increase the overall flexibility of AtcwINV1 exhibiting the most fluctuating regions in the β-propeller domain. The simulated heat treatment also increased the gyration radius and hydrophobic solvent accessible surface area of the plant enzyme, consistent with the initial steps of an unfolding process. The preservation of the conformational rigidity of BfrA at 353 K is linked to the shorter size of the protein loops. Shortening of BfrA loops appears to be a key mechanism for thermostability.
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Affiliation(s)
- Yuliet Mazola
- Department of Bioinformatics, Center for Genetic Engineering and Biotechnology (CIGB), Ave. 31 e/ 158 and 190, Playa, P.O. Box 6162, Havana, 10600, Cuba,
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