1
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Pantouris G, Khurana L, Ma A, Skeens E, Reiss K, Batista VS, Lisi GP, Lolis EJ. Regulation of MIF Enzymatic Activity by an Allosteric Site at the Central Solvent Channel. Cell Chem Biol 2020; 27:740-750.e5. [PMID: 32433911 DOI: 10.1016/j.chembiol.2020.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 02/18/2020] [Accepted: 04/30/2020] [Indexed: 12/18/2022]
Abstract
In proteins with multiple functions, such as macrophage migration inhibitory factor (MIF), the study of its intramolecular dynamic network can offer a unique opportunity to understand how a single protein is able to carry out several nonoverlapping functions. A dynamic mechanism that controls the MIF-induced activation of CD74 was recently discovered. In this study, the regulation of tautomerase activity was explored. The catalytic base Pro1 is found to form dynamic communications with the same allosteric node that regulates CD74 activation. Signal transmission between the allosteric and catalytic sites take place through intramolecular aromatic interactions and a hydrogen bond network that involves residues and water molecules of the MIF solvent channel. Once thought to be a consequence of trimerization, a regulatory function for the solvent channel is now defined. These results provide mechanistic insights into the regulation of catalytic activity and the role of solvent channel water molecules in MIF catalysis.
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Affiliation(s)
- Georgios Pantouris
- Department of Chemistry, University of the Pacific, Stockton, CA 95211, USA.
| | - Leepakshi Khurana
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT 06510, USA
| | - Anthony Ma
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT 06510, USA
| | - Erin Skeens
- Department of Molecular Biology, Cell Biology & Biochemistry, Brown University, Providence, RI 02903, USA
| | - Krystle Reiss
- Department of Chemistry, Yale University, New Haven, CT 06510, USA
| | - Victor S Batista
- Department of Chemistry, Yale University, New Haven, CT 06510, USA
| | - George P Lisi
- Department of Molecular Biology, Cell Biology & Biochemistry, Brown University, Providence, RI 02903, USA.
| | - Elias J Lolis
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT 06510, USA; Yale Cancer Center, Yale School of Medicine, New Haven, CT 06510, USA.
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2
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Mitsiogianni M, Koutsidis G, Mavroudis N, Trafalis DT, Botaitis S, Franco R, Zoumpourlis V, Amery T, Galanis A, Pappa A, Panayiotidis MI. The Role of Isothiocyanates as Cancer Chemo-Preventive, Chemo-Therapeutic and Anti-Melanoma Agents. Antioxidants (Basel) 2019; 8:E106. [PMID: 31003534 PMCID: PMC6523696 DOI: 10.3390/antiox8040106] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 04/03/2019] [Accepted: 04/12/2019] [Indexed: 12/11/2022] Open
Abstract
Many studies have shown evidence in support of the beneficial effects of phytochemicals in preventing chronic diseases, including cancer. Among such phytochemicals, sulphur-containing compounds (e.g., isothiocyanates (ITCs)) have raised scientific interest by exerting unique chemo-preventive properties against cancer pathogenesis. ITCs are the major biologically active compounds capable of mediating the anticancer effect of cruciferous vegetables. Recently, many studies have shown that a higher intake of cruciferous vegetables is associated with reduced risk of developing various forms of cancers primarily due to a plurality of effects, including (i) metabolic activation and detoxification, (ii) inflammation, (iii) angiogenesis, (iv) metastasis and (v) regulation of the epigenetic machinery. In the context of human malignant melanoma, a number of studies suggest that ITCs can cause cell cycle growth arrest and also induce apoptosis in human malignant melanoma cells. On such basis, ITCs could serve as promising chemo-therapeutic agents that could be used in the clinical setting to potentiate the efficacy of existing therapies.
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Affiliation(s)
- Melina Mitsiogianni
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK.
| | - Georgios Koutsidis
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK.
| | - Nikos Mavroudis
- Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6AP, UK.
| | - Dimitrios T Trafalis
- Laboratory of Pharmacology, Unit of Clinical Pharmacology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece.
| | - Sotiris Botaitis
- Second Department of Surgery, Democritus University of Thrace, 68100 Alexandroupolis, Greece.
| | - Rodrigo Franco
- Redox Biology Centre, University of Nebraska-Lincoln, Lincoln, NE 68588, USA.
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
| | - Vasilis Zoumpourlis
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, 11635 Athens, Greece.
| | - Tom Amery
- The Watrercress Company / The Wasabi Company, Waddock, Dorchester, Dorset DT2 8QY, UK.
| | - Alex Galanis
- Department of Molecular Biology and Genetics, Democritus University of Thrace, 68100 Alexandroupolis, Greece.
| | - Aglaia Pappa
- Department of Molecular Biology and Genetics, Democritus University of Thrace, 68100 Alexandroupolis, Greece.
| | - Mihalis I Panayiotidis
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK.
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3
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Dayalan Naidu S, Suzuki T, Yamamoto M, Fahey JW, Dinkova‐Kostova AT. Phenethyl Isothiocyanate, a Dual Activator of Transcription Factors NRF2 and HSF1. Mol Nutr Food Res 2018; 62:e1700908. [PMID: 29710398 PMCID: PMC6175120 DOI: 10.1002/mnfr.201700908] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/30/2018] [Indexed: 12/19/2022]
Abstract
Cruciferous vegetables are rich sources of glucosinolates which are the biogenic precursor molecules of isothiocyanates (ITCs). The relationship between the consumption of cruciferous vegetables and chemoprotection has been widely documented in epidemiological studies. Phenethyl isothiocyanate (PEITC) occurs as its glucosinolate precursor gluconasturtiin in the cruciferous vegetable watercress (Nasturtium officinale). PEITC has multiple biological effects, including activation of cytoprotective pathways, such as those mediated by the transcription factor nuclear factor erythroid 2 p45-related factor 2 (NRF2) and the transcription factor heat shock factor 1 (HSF1), and can cause changes in the epigenome. However, at high concentrations, PEITC leads to accumulation of reactive oxygen species and cytoskeletal changes, resulting in cytotoxicity. Underlying these activities is the sulfhydryl reactivity of PEITC with cysteine residues in its protein targets. This chemical reactivity highlights the critical importance of the dose of PEITC for achieving on-target selectivity, which should be carefully considered in the design of future clinical trials.
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Affiliation(s)
- Sharadha Dayalan Naidu
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Takafumi Suzuki
- Department of Medical BiochemistryTohoku University Graduate School of MedicineSendai980‐8575Japan
| | - Masayuki Yamamoto
- Department of Medical BiochemistryTohoku University Graduate School of MedicineSendai980‐8575Japan
| | - Jed W. Fahey
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of MedicineDivision of Clinical PharmacologyJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of International HealthCenter for Human NutritionJohns Hopkins University Bloomberg School of Public HealthBaltimoreMD21205USA
| | - Albena T. Dinkova‐Kostova
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of MedicineDivision of Clinical PharmacologyJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Jacqui Wood Cancer CentreDivision of Cancer ResearchSchool of MedicineUniversity of DundeeDundeeDD1 9SYScotlandUK
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4
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Schindler L, Dickerhof N, Hampton MB, Bernhagen J. Post-translational regulation of macrophage migration inhibitory factor: Basis for functional fine-tuning. Redox Biol 2017; 15:135-142. [PMID: 29247897 PMCID: PMC5975065 DOI: 10.1016/j.redox.2017.11.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 11/27/2017] [Accepted: 11/30/2017] [Indexed: 11/29/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) is a chemokine-like protein and an important mediator in the inflammatory response. Unlike most other pro-inflammatory cytokines, a number of cell types constitutively express MIF and secretion occurs from preformed stores. MIF is an evolutionarily conserved protein that shows a remarkable functional diversity, including specific binding to surface CD74 and chemokine receptors and the presence of two intrinsic tautomerase and oxidoreductase activities. Several studies have shown that MIF is subject to post-translational modification, particularly redox-dependent modification of the catalytic proline and cysteine residues. In this review, we summarize and discuss MIF post-translational modifications and their effects on the biological properties of this protein. We propose that the redox-sensitive residues in MIF will be modified at sites of inflammation and that this will add further depth to the functional diversity of this intriguing cytokine. MIF is a pro-inflammatory cytokine with tautomerase and oxidoreductase activity. MIF is susceptible to post-translational modifications, including redox modification. Oxidants and electrophiles generated at inflammatory sites can modify MIF. The biological consequences of redox modification need detailed characterization.
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Affiliation(s)
- Lisa Schindler
- Department of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Nina Dickerhof
- Centre for Free Radical Research, Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Mark B Hampton
- Centre for Free Radical Research, Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Jürgen Bernhagen
- Department of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-University (LMU), Munich, Germany; Munich Cluster for System Neurology (EXC 1010 SyNergy), Munich, Germany.
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5
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Gao Y, Hou R, Liu F, Liu H, Fei Q, Han Y, Cai R, Peng C, Qi Y. Obacunone causes sustained expression of MKP-1 thus inactivating p38 MAPK to suppress pro-inflammatory mediators through intracellular MIF. J Cell Biochem 2017; 119:837-849. [PMID: 28657665 DOI: 10.1002/jcb.26248] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 06/26/2017] [Indexed: 12/11/2022]
Abstract
Obacunone (OBA) is a highly oxygenated triterpenoid with various pharmacological activities. In this study, we explored its anti-inflammatory effect and underlying mechanisms in LPS-activated macrophages. Our data showed that OBA potently decreased pro-inflammatory mediators (eg, NO, IL-6, IL-1β, and MCP-1) at the transcriptional and translational levels without cytotoxicity. A mechanism study showed that OBA significantly suppressed p38-mediated AP-1 signaling by stabilizing the mRNA of mitogen-activated protein kinase phosphatase 1 (MKP-1), thus prolonging the expression time of the MKP-1 protein. Next, we used computational target-fishing technology to predict the possible target of OBA. Only one potential target, macrophage migration inhibitory factor (MIF), was presented. Experimentally, the interaction between OBA and MIF was also confirmed. By using an anti-mouse MIF antibody, extracellular MIF (exMIF) was neutralized. Our results showed that autocrine MIF had slight influence on the pro-inflammatory mediator production. Correspondingly, the anti-inflammatory activity of OBA was also not affected. Accordingly, we knocked down the MIF gene in RAW 264.7 cells and obtained stable MIF deficient cells MIF(-), in which the effects of OBA on p38 phosphorylation, AP-1 activation, and pro-inflammatory mediator production in response to LPS nearly disappeared. In contrast to MIF(+) cells, the MKP-1 protein expression time of the MIF(-) cells was markedly prolonged. We conclude that OBA exerts its anti-inflammatory effect by targeting intracellular MIF (inMIF) inhibition to regulate the MKP-1/p38/AP-1 pathway. Our findings also provide a chain of evidence that the inhibition of inMIF, rather than exMIF, may become a novel target for inflammation.
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Affiliation(s)
- Yuan Gao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China.,Chegndu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Rui Hou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China
| | - Fen Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China
| | - Haibo Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China
| | - Qiaoling Fei
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China
| | - Yixin Han
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China
| | - Runlan Cai
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China
| | - Cheng Peng
- Chegndu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Yun Qi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China
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6
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Qian Y, Schürmann M, Janning P, Hedberg C, Waldmann H. Activity-Based Proteome Profiling Probes Based on Woodward's Reagent K with Distinct Target Selectivity. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602666] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yong Qian
- Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 Dortmund Germany
| | - Marc Schürmann
- Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 Dortmund Germany
| | - Petra Janning
- Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 Dortmund Germany
| | - Christian Hedberg
- Department of Chemistry, Chemical Biology Centre (KBC); Umeå University; 90187 Umeå Sweden
| | - Herbert Waldmann
- Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 Dortmund Germany
- Technical University Dortmund; Department of Chemistry and Chemical Biology; Otto-Hahn-Strasse 6 Dortmund Germany
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7
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Qian Y, Schürmann M, Janning P, Hedberg C, Waldmann H. Activity-Based Proteome Profiling Probes Based on Woodward's Reagent K with Distinct Target Selectivity. Angew Chem Int Ed Engl 2016; 55:7766-71. [DOI: 10.1002/anie.201602666] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Yong Qian
- Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 Dortmund Germany
| | - Marc Schürmann
- Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 Dortmund Germany
| | - Petra Janning
- Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 Dortmund Germany
| | - Christian Hedberg
- Department of Chemistry, Chemical Biology Centre (KBC); Umeå University; 90187 Umeå Sweden
| | - Herbert Waldmann
- Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 Dortmund Germany
- Technical University Dortmund; Department of Chemistry and Chemical Biology; Otto-Hahn-Strasse 6 Dortmund Germany
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8
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Gorman J, Soto C, Yang MM, Davenport TM, Guttman M, Bailer RT, Chambers M, Chuang GY, DeKosky BJ, Doria-Rose NA, Druz A, Ernandes MJ, Georgiev IS, Jarosinski MC, Joyce MG, Lemmin TM, Leung S, Louder MK, McDaniel JR, Narpala S, Pancera M, Stuckey J, Wu X, Yang Y, Zhang B, Zhou T, Mullikin JC, Baxa U, Georgiou G, McDermott AB, Bonsignori M, Haynes BF, Moore PL, Morris L, Lee KK, Shapiro L, Mascola JR, Kwong PD. Structures of HIV-1 Env V1V2 with broadly neutralizing antibodies reveal commonalities that enable vaccine design. Nat Struct Mol Biol 2016; 23:81-90. [PMID: 26689967 PMCID: PMC4833398 DOI: 10.1038/nsmb.3144] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 11/17/2015] [Indexed: 12/20/2022]
Abstract
Broadly neutralizing antibodies (bNAbs) against HIV-1 Env V1V2 arise in multiple donors. However, atomic-level interactions had previously been determined only with antibodies from a single donor, thus making commonalities in recognition uncertain. Here we report the cocrystal structure of V1V2 with antibody CH03 from a second donor and model Env interactions of antibody CAP256-VRC26 from a third donor. These V1V2-directed bNAbs used strand-strand interactions between a protruding antibody loop and a V1V2 strand but differed in their N-glycan recognition. Ontogeny analysis indicated that protruding loops develop early, and glycan interactions mature over time. Altogether, the multidonor information suggested that V1V2-directed bNAbs form an 'extended class', for which we engineered ontogeny-specific antigens: Env trimers with chimeric V1V2s that interacted with inferred ancestor and intermediate antibodies. The ontogeny-based design of vaccine antigens described here may provide a general means for eliciting antibodies of a desired class.
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Affiliation(s)
- Jason Gorman
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Cinque Soto
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Max M. Yang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | | | - Miklos Guttman
- Department of Medicinal Chemistry, University of Washington, Seattle, Washington
| | - Robert T. Bailer
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Michael Chambers
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Gwo-Yu Chuang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Brandon J. DeKosky
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas
| | - Nicole A. Doria-Rose
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Aliaksandr Druz
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Michael J. Ernandes
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Ivelin S. Georgiev
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Marissa C. Jarosinski
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - M. Gordon Joyce
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Thomas M. Lemmin
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California
| | - Sherman Leung
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Mark K. Louder
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Jonathan R. McDaniel
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas
| | - Sandeep Narpala
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Marie Pancera
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Jonathan Stuckey
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Xueling Wu
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Yongping Yang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Baoshan Zhang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Tongqing Zhou
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | | | - James C. Mullikin
- NIH Intramural Sequenicng Center (NISC), National Human Geonome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Ulrich Baxa
- Electron Microscopy Laboratory, Cancer Research Technology Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - George Georgiou
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas
| | - Adrian B. McDermott
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Mattia Bonsignori
- Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Barton F. Haynes
- Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Penny L. Moore
- Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa
- Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Congella, South Africa
| | - Lynn Morris
- Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa
- Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Congella, South Africa
| | - Kelly K. Lee
- Department of Medicinal Chemistry, University of Washington, Seattle, Washington
| | - Lawrence Shapiro
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
- Department of Biochemistry & Molecular Biophysics and Department of Systems Biology, Columbia University, New York
| | - John R. Mascola
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Peter D. Kwong
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
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9
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Spencer ES, Dale EJ, Gommans AL, Rutledge MT, Vo CT, Nakatani Y, Gamble AB, Smith RAJ, Wilbanks SM, Hampton MB, Tyndall JDA. Multiple binding modes of isothiocyanates that inhibit macrophage migration inhibitory factor. Eur J Med Chem 2015; 93:501-10. [PMID: 25743213 DOI: 10.1016/j.ejmech.2015.02.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 02/08/2015] [Accepted: 02/10/2015] [Indexed: 12/28/2022]
Abstract
Macrophage migration inhibitory factor (MIF) is a pleiotropic cytokine that has roles in the innate immune response, and also contributes to inflammatory disease. While the biological properties of MIF are closely linked to protein-protein interactions, MIF also has tautomerase activity. Inhibition of this activity interferes with the interaction of MIF with protein partners e.g. the CD74 receptor, and tautomerase inhibitors show promise in disease models including multiple sclerosis and colitis. Isothiocyanates inhibit MIF tautomerase activity via covalent modification of the N-terminal proline. We systematically explored variants of benzyl and phenethyl isothiocyanates, to define determinants of inhibition. In particular, substitution with hydroxyl, chloro, fluoro and trifluoro moieties at the para and meta positions were evaluated. In assays on treated cells and recombinant protein, the IC50 varied from 250 nM to >100 μM. X-ray crystal structures of selected complexes revealed that two binding modes are accessed by some compounds, perhaps owing to strain in short linkers between the isothiocyanate and aromatic ring. The variety of binding modes confirms the existence of two subsites for inhibitors and establishes a platform for the development of potent inhibitors of MIF that only need to target one of these subsites.
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Affiliation(s)
- Emma S Spencer
- Centre for Free Radical Research, Department of Pathology, University of Otago, PO Box 4345, Christchurch 8140, New Zealand
| | - Edward J Dale
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Aimée L Gommans
- Department of Biochemistry, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Malcolm T Rutledge
- Department of Biochemistry, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Christine T Vo
- National School of Pharmacy, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Yoshio Nakatani
- Department of Biochemistry, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Allan B Gamble
- National School of Pharmacy, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Robin A J Smith
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Sigurd M Wilbanks
- Department of Biochemistry, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Mark B Hampton
- Centre for Free Radical Research, Department of Pathology, University of Otago, PO Box 4345, Christchurch 8140, New Zealand.
| | - Joel D A Tyndall
- National School of Pharmacy, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
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