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Shen D, Lang Y, Chu F, Wu X, Wang Y, Zheng X, Zhang HL, Zhu J, Liu K. Roles of macrophage migration inhibitory factor in Guillain-Barré syndrome and experimental autoimmune neuritis: beneficial or harmful? Expert Opin Ther Targets 2018; 22:567-577. [PMID: 29856236 DOI: 10.1080/14728222.2018.1484109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Macrophage migration inhibitory factor (MIF) plays an important role in the pathogenesis of Guillain-Barré syndrome (GBS) and its animal model experimental autoimmune neuritis (EAN), which may offer an opportunity for the development of the novel therapeutic strategies for GBS. Areas covered: 'macrophage migration inhibitory factor' and 'Guillain-Barré syndrome' were used as keywords to search for related publications on Pub-Med, National Center for Biotechnology Information (NCBI), USA. MIF is involved in the etiology of various inflammatory and autoimmune disorders. However, the roles of MIF in GBS and EAN have not been summarized in the publications we identified. Therefore, in this review, we described and analyzed the major roles of MIF in GBS/EAN. Primarily, this molecule aggravates the inflammatory responses in this disorder. However, multiple studies indicated a protective role of MIF in GBS. The potential of MIF as a therapeutic target in GBS has been recently demonstrated in experimental and clinical studies, although clinical trials have been unavailable to date. Expert opinion: MIF plays a critical role in the initiation and progression of GBS and EAN, and it may represent a potential therapeutic target for GBS.
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Affiliation(s)
- Donghui Shen
- a Neuroscience Center, Department of Neurology , The First Hospital of Jilin University, Jilin University , Changchun , China
| | - Yue Lang
- a Neuroscience Center, Department of Neurology , The First Hospital of Jilin University, Jilin University , Changchun , China
| | - Fengna Chu
- a Neuroscience Center, Department of Neurology , The First Hospital of Jilin University, Jilin University , Changchun , China
| | - Xiujuan Wu
- a Neuroscience Center, Department of Neurology , The First Hospital of Jilin University, Jilin University , Changchun , China
| | - Ying Wang
- b Department of Neurobiology, Care Sciences and Society , Division of Neurodegeneration, Karolinska Institute, Karolinska University Hospital Huddinge , Stockholm , Sweden
| | - Xiangyu Zheng
- a Neuroscience Center, Department of Neurology , The First Hospital of Jilin University, Jilin University , Changchun , China
| | - Hong-Liang Zhang
- c Department of Life Sciences , the National Natural Science Foundation of China , Beijing , China
| | - Jie Zhu
- a Neuroscience Center, Department of Neurology , The First Hospital of Jilin University, Jilin University , Changchun , China.,b Department of Neurobiology, Care Sciences and Society , Division of Neurodegeneration, Karolinska Institute, Karolinska University Hospital Huddinge , Stockholm , Sweden
| | - Kangding Liu
- a Neuroscience Center, Department of Neurology , The First Hospital of Jilin University, Jilin University , Changchun , China
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Lang EJM, Heyes LC, Jameson GB, Parker EJ. Calculated pKa Variations Expose Dynamic Allosteric Communication Networks. J Am Chem Soc 2016; 138:2036-45. [DOI: 10.1021/jacs.5b13134] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Geoffrey B. Jameson
- Institute
of Fundamental Sciences, Massey University, PO Box 11-222, Palmerston North 4422, New Zealand
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Mota AAR, Carvalho PHPR, Guido BC, de Oliveira HCB, Soares TA, Corrêa JR, Neto BAD. Bioimaging, cellular uptake and dynamics in living cells of a lipophilic fluorescent benzothiadiazole at low temperature (4 °C). Chem Sci 2014. [DOI: 10.1039/c4sc01785d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Liu JQ, Wu J, Jia ZB, Chen HL, Li QL, Sakiyama H, Soares T, Ren Fei RF, Daiguebonne C, Guillou O, Ng SW. Two isoreticular metal–organic frameworks with CdSO4-like topology: selective gas sorption and drug delivery. Dalton Trans 2014; 43:17265-73. [DOI: 10.1039/c4dt01890g] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we have also investigated the binding mode of 5-FU to these frameworks, which provides an atomic level view of host–guest interactions.
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Affiliation(s)
- Jian-Qiang Liu
- School of Pharmacy
- Guangdong Medical College
- Dongguan, P. R. China
| | - Jian Wu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi University for Nationalities
- College of Chemistry and Chemical Engineering
- Nanning, China
| | - Zhen-Bin Jia
- School of Pharmacy
- Guangdong Medical College
- Dongguan, P. R. China
| | - Hong-Lang Chen
- School of Pharmacy
- Guangdong Medical College
- Dongguan, P. R. China
| | - Qing-Lin Li
- School of Pharmacy
- Guangdong Medical College
- Dongguan, P. R. China
| | - Hiroshi Sakiyama
- Department of Material and Biological Chemistry
- Faculty of Science
- Yamagata University
- Kojirakawa, Japan
| | - Thereza Soares
- Departament de Fundamental Chemistry
- Universidade Federal de Pernambuco
- Recife 50740-560, Brazil
| | - Ren Fei Ren Fei
- Department of Pharmacy
- Nanfang Hospital
- Southern Medical University
- Guangzhou 510515, China
| | - Carole Daiguebonne
- INSA
- UMR 6226 “Institut des Sciences Chimiques de Rennes”
- F-35708 Rennes, France
| | - Olivier Guillou
- INSA
- UMR 6226 “Institut des Sciences Chimiques de Rennes”
- F-35708 Rennes, France
| | - Seik Weng Ng
- Department of Chemistry
- University of Malaya
- 50603 Kuala Lumpur, Malaysia
- Chemistry Department
- King Abdulaziz University
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Current developments of macrophage migration inhibitory factor (MIF) inhibitors. Drug Discov Today 2013; 18:592-600. [DOI: 10.1016/j.drudis.2012.12.013] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Revised: 12/14/2012] [Accepted: 12/20/2012] [Indexed: 12/21/2022]
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Al-Sha'er MA, VanPatten S, Al-Abed Y, Taha MO. Elaborate ligand-based modeling reveal new migration inhibitory factor inhibitors. J Mol Graph Model 2013; 42:104-14. [PMID: 23603608 DOI: 10.1016/j.jmgm.2013.03.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 03/14/2013] [Accepted: 03/16/2013] [Indexed: 11/19/2022]
Abstract
Recent research suggested the involvement of migration inhibitor factor (MIF) in cancer and inflammatory diseases, which prompted several attempts to develop new MIF inhibitors. Accordingly, we investigated the pharmacophoric space of 79 MIF inhibitors using seven diverse subsets of inhibitors to identify plausible binding hypotheses (pharmacophores). Subsequently, we implemented genetic algorithm and multiple linear regression analysis to select optimal combination of pharmacophores and physicochemical descriptors capable of explaining bioactivity variation within the training compounds (QSAR model, r63=0.62, F=42.8, rLOO(2)=0.721,rPRESS(2) against 16 external test inhibitors=0.58). Two orthogonal pharmacophores appeared in the optimal QSAR model suggestive of at least two binding modes available to ligands inside MIF binding pocket. Subsequent validation using receiver operating characteristic (ROC) curves analysis established the validity of these two pharmacophores. We employed these pharmacophoric models and associated QSAR equation to screen the National Cancer Institute (NCI) list of compounds. Eight compounds gave >50% inhibition at 100μM. Two molecules illustrated >75% inhibition at 10μM.
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Bai F, Asojo OA, Cirillo P, Ciustea M, Ledizet M, Aristoff PA, Leng L, Koski RA, Powell TJ, Bucala R, Anthony KG. A novel allosteric inhibitor of macrophage migration inhibitory factor (MIF). J Biol Chem 2012; 287:30653-63. [PMID: 22782901 DOI: 10.1074/jbc.m112.385583] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) is a catalytic cytokine and an upstream mediator of the inflammatory pathway. MIF has broad regulatory properties, dysregulation of which has been implicated in the pathology of multiple immunological diseases. Inhibition of MIF activity with small molecules has proven beneficial in a number of disease models. Known small molecule MIF inhibitors typically bind in the tautomerase site of the MIF trimer, often covalently modifying the catalytic proline. Allosteric MIF inhibitors, particularly those that associate with the protein by noncovalent interactions, could reveal novel ways to block MIF activity for therapeutic benefit and serve as chemical probes to elucidate the structural basis for the diverse regulatory properties of MIF. In this study, we report the identification and functional characterization of a novel allosteric MIF inhibitor. Identified from a high throughput screening effort, this sulfonated azo compound termed p425 strongly inhibited the ability of MIF to tautomerize 4-hydroxyphenyl pyruvate. Furthermore, p425 blocked the interaction of MIF with its receptor, CD74, and interfered with the pro-inflammatory activities of the cytokine. Structural studies revealed a unique mode of binding for p425, with a single molecule of the inhibitor occupying the interface of two MIF trimers. The inhibitor binds MIF mainly on the protein surface through hydrophobic interactions that are stabilized by hydrogen bonding with four highly specific residues from three different monomers. The mode of p425 binding reveals a unique way to block the activity of the cytokine for potential therapeutic benefit in MIF-associated diseases.
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Affiliation(s)
- Fengwei Bai
- L2 Diagnostics, LLC, New Haven, CT 06511, USA
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Mi L, Di Pasqua AJ, Chung FL. Proteins as binding targets of isothiocyanates in cancer prevention. Carcinogenesis 2011; 32:1405-13. [PMID: 21665889 PMCID: PMC3179418 DOI: 10.1093/carcin/bgr111] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 06/01/2011] [Accepted: 06/05/2011] [Indexed: 01/18/2023] Open
Abstract
Isothiocyanates are versatile cancer-preventive compounds. Evidence from animal studies indicates that the anticarcinogenic activities of ITCs involve all the major stages of tumor growth: initiation, promotion and progression. Epidemiological studies have also shown that dietary intake of ITCs is associated with reduced risk of certain human cancers. A number of mechanisms have been proposed for the chemopreventive activities of ITCs. To identify the molecular targets of ITCs is a first step to understand the molecular mechanisms of ITCs. Studies in recent years have shown that the covalent binding to certain protein targets by ITCs seems to play an important role in ITC-induced apoptosis and cell growth inhibition and other cellular effects. The knowledge gained from these studies may be used to guide future design and screen of better and more efficacious compounds. In this review, we intend to cover all potential protein targets of ITCs so far studied and summarize what are known about their binding sites and the potential biological consequences. In the end, we also offer discussions to shed light onto the relationship between protein binding and reactive oxygen species generation by ITCs.
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Affiliation(s)
- Lixin Mi
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA.
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Franca EF, Freitas LCG, Lins RD. Chitosan molecular structure as a function of N-acetylation. Biopolymers 2011; 95:448-60. [PMID: 21328576 DOI: 10.1002/bip.21602] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 01/14/2011] [Accepted: 01/17/2011] [Indexed: 11/10/2022]
Abstract
Molecular dynamics simulations have been carried out to characterize the structure and solubility of chitosan nanoparticle-like structures as a function of the deacetylation level (0, 40, 60, and 100%) and the spatial distribution of the N-acetyl groups in the particles. The polysaccharide chains of highly N-deacetylated particles where the N-acetyl groups are uniformly distributed present a high flexibility and preference for the relaxed two-fold helix and five-fold helix motifs. When these groups are confined to a given region of the particle, the chains adopt preferentially a two-fold helix with ϕ and ψ values close to crystalline chitin. Nanoparticles with up to 40% acetylation are moderately soluble, forming stable aggregates when the N-acetyl groups are unevenly distributed. Systems with 60% or higher N-acetylation levels are insoluble and present similar degrees of swelling regardless the distribution of their N-acetyl groups. Overall particle solvation is highly affected by electrostatic forces resulting from the degree of acetylation. The water mobility and orientation around the polysaccharide chains affects the stability of the intramolecular O3-HO3((n)) ···O5((n +) (1)) hydrogen bond, which in turn controls particle aggregation.
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Affiliation(s)
- Eduardo F Franca
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia, MG 38400-902, Brazil
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Weimer KME, Shane BL, Brunetto M, Bhattacharyya S, Hati S. Evolutionary basis for the coupled-domain motions in Thermus thermophilus leucyl-tRNA synthetase. J Biol Chem 2009; 284:10088-99. [PMID: 19188368 PMCID: PMC2665063 DOI: 10.1074/jbc.m807361200] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2008] [Revised: 01/30/2009] [Indexed: 11/06/2022] Open
Abstract
Aminoacyl-tRNA synthetases are multidomain proteins that catalyze the covalent attachment of amino acids to their cognate transfer RNA. Various domains of an aminoacyl-tRNA synthetase perform their specific functions in a highly coordinated manner to maintain high accuracy in protein synthesis in cells. The coordination of their function, therefore, requires communication between domains. In this study we explored the relevance of enzyme motion in domain-domain communications. Specifically, we attempted to probe whether the communication between distantly located domains of a multidomain protein is accomplished through a coordinated movement of structural elements. We investigated the collective motion in Thermus thermophilus leucyl-tRNA synthetase by studying the low frequency normal modes. We identified the mode that best described the experimentally observed conformational changes of T. thermophilus leucyl-tRNA synthetase upon substrate binding and analyzed the correlated and anticorrelated motions between different domains. Furthermore, we used statistical coupling analysis to explore if the amino acid pairs and/or clusters whose motions are thermally coupled have also coevolved. Our study demonstrates that a small number of residues belong to the category whose coupled thermal motions correspond to evolutionary coupling as well. These residue clusters constitute a distinguished set of interacting networks that are sparsely distributed in the domain interface. Residues of these networking clusters are within van der Waals contact, and we suggest that they are critical in the propagation of long range mechanochemical motions in T. thermophilus leucyl-tRNA synthetase.
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Fitch CA, García-Moreno E B. Structure-based pKa calculations using continuum electrostatics methods. ACTA ACUST UNITED AC 2008; Chapter 8:Unit 8.11. [PMID: 18428794 DOI: 10.1002/0471250953.bi0811s16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Electrostatic free energy is useful for correlating structure with function in proteins in which ionizable groups play essential functional roles. To this end, the pK(a) values of ionizable groups must be known and their molecular determinants must be understood. Structure-based calculations of electrostatic energies and pK(a) values are necessary for this purpose. This unit describes protocols for pK(a) calculations with continuum electrostatics methods based on the numerical solution of the linearized Poisson-Boltzmann equation by the method of finite differences. Critical discussion of key parameters, approximations, and shortcomings of these methods is included. Two protocols are described for calculations with methods modified empirically to maximize agreement between measured and calculated pK(a) values. Applied judiciously, these methods can contribute useful and novel insight into properties of surface ionizable groups in proteins.
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