1
|
Dinadayala P, Gleizal G, Guinamand S, Bonifassi P, Haensler J. Characterization of antigen adjuvant interactions in polyacrylate adjuvanted vaccines. Biochem Biophys Rep 2023; 33:101405. [DOI: 10.1016/j.bbrep.2022.101405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/23/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
|
2
|
Ogiso H, Suno R, Kobayashi T, Kawami M, Takano M, Ogasawara M. A Liquid Chromatography-Mass Spectrometry Method to Study the Interaction between Membrane Proteins and Low-Molecular-Weight Compound Mixtures. Molecules 2022; 27:molecules27154889. [PMID: 35956840 PMCID: PMC9369908 DOI: 10.3390/molecules27154889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 11/27/2022] Open
Abstract
Molecular interaction analysis is an essential technique for the study of biomolecular functions and the development of new drugs. Most current methods generally require manipulation to immobilize or label molecules, and require advance identification of at least one of the two molecules in the reaction. In this study, we succeeded in detecting the interaction of low-molecular-weight (LMW) compounds with a membrane protein mixture derived from cultured cells expressing target membrane proteins by using the size exclusion chromatography-mass spectrometry (SEC-MS) method under the condition of 0.001% lauryl maltose neopentyl glycol as detergent and atmospheric pressure chemical ionization. This method allowed us to analyze the interaction of a mixture of medicinal herbal ingredients with a mixture of membrane proteins to identify the two interacting ingredients. As it does not require specialized equipment (e.g., a two-dimensional liquid chromatography system), this SEC-MS method enables the analysis of interactions between LMW compounds and relatively high-expressed membrane proteins without immobilization or derivatization of the molecules.
Collapse
Affiliation(s)
- Hideo Ogiso
- Toyama Prefectural Institute for Pharmaceutical Research, Imizu 939-0363, Toyama, Japan;
- Correspondence:
| | - Ryoji Suno
- Department of Medical Chemistry, Kansai Medical University, Hirakata 573-1010, Osaka, Japan; (R.S.); (T.K.)
| | - Takuya Kobayashi
- Department of Medical Chemistry, Kansai Medical University, Hirakata 573-1010, Osaka, Japan; (R.S.); (T.K.)
| | - Masashi Kawami
- Department of Pharmaceutics and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima City 734-8553, Hiroshima, Japan; (M.K.); (M.T.)
| | - Mikihisa Takano
- Department of Pharmaceutics and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima City 734-8553, Hiroshima, Japan; (M.K.); (M.T.)
| | - Masaru Ogasawara
- Toyama Prefectural Institute for Pharmaceutical Research, Imizu 939-0363, Toyama, Japan;
| |
Collapse
|
3
|
Calamini B, Ferry G, Boutin JA. Melatonin Binding to Human NQO2 by Isothermal Titration Calorimetry. Methods Mol Biol 2022; 2550:305-314. [PMID: 36180701 DOI: 10.1007/978-1-0716-2593-4_32] [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: 06/16/2023]
Abstract
To ensure the physical interaction between a protein and its ligand, many techniques can be applied. One of them, isothermal titration calorimetry (ITC), measures the heat exchange between a forming molecular complex and its milieu. From this heat exchange, it is possible to acquire the thermodynamic parameters, the binding stoichiometry and the affinity constant (Ka) between the two interacting binding partners, which can then be used to determine the dissociation constant (Kd). We made use of ITC to determine the true Kd of melatonin for its putative receptor MT3, also known as the enzyme quinone reductase 2 (NQO2). In this chapter, we describe the step-by-step procedure for performing this experiment and extend it to 2-iodomelatonin, a melatonin derivative that was used in the initial identification and characterization of MT3. The dissociation constants of melatonin and 2-iodomelatonin toward NQO2 derived from these experiments are in line with data reported previously, albeit using alternative techniques.
Collapse
Affiliation(s)
- Barbara Calamini
- Sanofi Strasbourg R&D Center, Strasbourg, France
- Eli Lilly and Company, Cambridge, MA, USA
| | - Gilles Ferry
- Pole d'expertise Biotechnologie, Chimie & Biologie, Institut de Recherches Servier, Croissy-sur-Seine, France
| | - Jean A Boutin
- Pole d'expertise Biotechnologie, Chimie & Biologie, Institut de Recherches Servier, Croissy-sur-Seine, France.
- Pharma-Dev, UMR 152, Université de Toulouse, Toulouse, France.
| |
Collapse
|
4
|
Park D, Anisuzzaman ASM, Magis AT, Chen G, Xie M, Zhang G, Behera M, Sica GL, Ramalingam SS, Owonikoko TK, Deng X. Discovery of Small Molecule Bak Activator for Lung Cancer Therapy. Theranostics 2021; 11:8500-8516. [PMID: 34373755 PMCID: PMC8344021 DOI: 10.7150/thno.60349] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 07/17/2021] [Indexed: 12/21/2022] Open
Abstract
Rationale: Bak is a major proapoptotic Bcl2 family member and a required molecule for apoptotic cell death. High levels of endogenous Bak were observed in both small cell lung cancer (SCLC) and non-small cell lung cancer (NSCLC) cell lines. Increased Bak expression was correlated with poor prognosis of NSCLC patients, suggesting that Bak protein is an attractive target for lung cancer therapy. The BH3 domain functions as death domain and is required for Bak to initiate apoptotic cell death. Thus, the BH3 domain is attractive target for discovery of Bak agonist. Methods: The BH3 death domain binding pocket (aa75-88) of Bak was chosen as a docking site for screening of small molecule Bak activators using the UCSF DOCK 6.1 program suite and the NCI chemical library (300,000 small molecules) database. The top 500 compounds determined to have the highest affinity for the BH3 domain were obtained from the NCI and tested for cytotoxicity for further screening. We identified a small molecule Bak activator BKA-073 as the lead compound. The binding affinity of BKA-073 with Bak protein was analyzed by isothermal titration calorimetry (ITC) assay. BKA-073-mediated Bak activation via oligomerization was analyzed by a cross-linking with Bis (maleimido) hexane (BMH). Sensitivity of BKA-073 to lung cancer cells in vitro was evaluated by dynamic BH3 profiling (DBP) and apoptotic cell death assay. The potency of BKA-073 alone or in combination with radiotherapy or Bcl2 inhibitor was evaluated in animal models. Results: We found that BKA-073 binds Bak at BH3 domain with high affinity and selectivity. BKA-073/Bak binding promotes Bak oligomerization and mitochondrial priming that activates its proapoptotic function. BKA-073 potently suppresses tumor growth without significant normal tissue toxicity in small cell lung cancer (SCLC) and NSCLC xenografts, patient-derived xenografts, and genetically engineered mouse models of mutant KRAS-driven cancer. Bak accumulates in radioresistant lung cancer cells and BKA-073 reverses radioresistance. Combination of BKA-073 with Bcl-2 inhibitor venetoclax exhibits strong synergy against lung cancer in vivo. Conclusions: Development of small molecule Bak activator may provide a new class of anticancer agents to treat lung cancer.
Collapse
|
5
|
Label-free evaluation of small-molecule-protein interaction using magnetic capture and electrochemical detection. Anal Bioanal Chem 2019; 411:2111-2119. [PMID: 30739194 DOI: 10.1007/s00216-019-01636-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 01/22/2019] [Indexed: 12/17/2022]
Abstract
The evaluation of interaction between small molecules and protein is an important step in the discovery of new drugs and to study complex biological systems. In this work, an alternative method was presented to evaluate small-molecule-protein interaction by using ligand capture by protein-coated magnetic particles (MPs) and disposable electrochemical cells. The interaction study was conducted using [10]-gingerol from ginger rhizome and a transmembrane protein αVβ3 integrin. Initially, the electrochemical behavior of the natural compound [10]-gingerol was evaluated with the disposable carbon-based electrodes and presented an irreversible oxidation process controlled by diffusion. The analytical curve for [10]-gingerol was obtained in the range of 1.0 to 20.0 μmol L-1, with limit of detection of 0.26 μmol L-1. Then MPs coated with αVβ3 integrin were incubated with standard solutions and extracts of ginger rhizome for [10]-gingerol capture and separation. The bioconjugate obtained was dropped to the disposable electrochemical cells, keeping a permanent magnet behind the working electrode, and the binding process was evaluated by the electrochemical detection of [10]-gingerol. The assay method proposed was also employed to calculate the [10]-gingerol-αVβ3 integrin association constant, which was calculated as 4.3 × 107 M-1. The method proposed proved to be a good label-free alternative to ligand-protein interaction studies. Graphical abstract ᅟ.
Collapse
|
6
|
Fernández M, Ortega Á, Rico-Jiménez M, Martín-Mora D, Daddaoua A, Matilla MA, Krell T. High-Throughput Screening to Identify Chemoreceptor Ligands. Methods Mol Biol 2018; 1729:291-301. [PMID: 29429099 DOI: 10.1007/978-1-4939-7577-8_23] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The majority of bacterial chemoreceptors remain functionally un-annotated. The knowledge of chemoreceptor function, however, is indispensable to understanding the evolution of the chemotaxis system in bacteria with different lifestyles. Significant progress in the annotation of chemoreceptor function has been made using experimental strategies that are based on the individual, genetically engineered ligand binding domain (LBD) of chemoreceptors. There is now evidence that all major classes of LBDs can be produced as individual domains that retain their ligand binding activity. Here, we provide a protocol for the combined use of high-throughput ligand screening using Differential Scanning Fluorimetry followed by Isothermal Titration Calorimetry to identify and characterize ligands that bind to recombinant chemoreceptor LBDs. This approach has been shown to be very efficient for determining the function of novel chemoreceptors.
Collapse
Affiliation(s)
- Matilde Fernández
- Department of Environmental Protection, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Álvaro Ortega
- Department of Environmental Protection, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Miriam Rico-Jiménez
- Department of Environmental Protection, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - David Martín-Mora
- Department of Environmental Protection, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Abdelali Daddaoua
- Department of Environmental Protection, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Miguel A Matilla
- Department of Environmental Protection, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Tino Krell
- Department of Environmental Protection, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain.
| |
Collapse
|
7
|
Chen G, Magis AT, Xu K, Park D, Yu DS, Owonikoko TK, Sica GL, Satola SW, Ramalingam SS, Curran WJ, Doetsch PW, Deng X. Targeting Mcl-1 enhances DNA replication stress sensitivity to cancer therapy. J Clin Invest 2017; 128:500-516. [PMID: 29227281 DOI: 10.1172/jci92742] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 11/02/2017] [Indexed: 12/21/2022] Open
Abstract
DNA double-strand breaks (DSBs) are mainly repaired either by homologous recombination (HR) or by nonhomologous end-joining (NHEJ) pathways. Here, we showed that myeloid cell leukemia sequence 1 (Mcl-1) acts as a functional switch in selecting between HR and NHEJ pathways. Mcl-1 was cell cycle-regulated during HR, with its expression peaking in S/G2 phase. While endogenous Mcl-1 depletion reduced HR and enhanced NHEJ, Mcl-1 overexpression resulted in a net increase in HR over NHEJ. Mcl-1 directly interacted with the dimeric Ku protein complex via its Bcl-2 homology 1 and 3 (BH1 and BH3) domains, which are required for Mcl-1 to inhibit Ku-mediated NHEJ. Mcl-1 also promoted DNA resection mediated by the Mre11 complex and HR-dependent DSB repair. Using the Mcl-1 BH1 domain as a docking site, we identified a small molecule, MI-223, that directly bound to BH1 and blocked Mcl-1-stimulated HR DNA repair, leading to sensitization of cancer cells to hydroxyurea- or olaparib-induced DNA replication stress. Combined treatment with MI-223 and hydroxyurea or olaparib exhibited a strong synergy against lung cancer in vivo. This mechanism-driven combination of agents provides a highly attractive therapeutic strategy to improve lung cancer outcomes.
Collapse
Affiliation(s)
- Guo Chen
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University, Atlanta, Georgia, USA
| | | | - Ke Xu
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University, Atlanta, Georgia, USA
| | - Dongkyoo Park
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University, Atlanta, Georgia, USA
| | - David S Yu
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University, Atlanta, Georgia, USA
| | | | | | | | | | - Walter J Curran
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University, Atlanta, Georgia, USA
| | - Paul W Doetsch
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University, Atlanta, Georgia, USA.,Department of Biochemistry, Emory University School of Medicine and Winship Cancer Institute of Emory University, Atlanta, Georgia, USA
| | - Xingming Deng
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University, Atlanta, Georgia, USA
| |
Collapse
|
8
|
Hamdaoui M, Ney M, Sarda V, Karmazin L, Bailly C, Sieffert N, Dohm S, Hansen A, Grimme S, Djukic JP. Evidence of a Donor–Acceptor (Ir–H)→SiR3 Interaction in a Trapped Ir(III) Silane Catalytic Intermediate. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00248] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mustapha Hamdaoui
- Institut
de Chimie de Strasbourg, UMR 7177 CNRS, Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| | - Marjolaine Ney
- Institut
de Chimie de Strasbourg, UMR 7177 CNRS, Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| | - Vivien Sarda
- Institut
de Chimie de Strasbourg, UMR 7177 CNRS, Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| | - Lydia Karmazin
- Institut
de Chimie de Strasbourg, UMR 7177 CNRS, Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| | - Corinne Bailly
- Institut
de Chimie de Strasbourg, UMR 7177 CNRS, Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| | - Nicolas Sieffert
- Université Grenoble Alpes & CNRS, DCM UMR 5250, F-38000 Grenoble, France
| | - Sebastian Dohm
- Mulliken
Center for Theoretical Chemistry, Institut für Physikalische
und Theoretische Chemie, Universität Bonn, Beringstraße
4, D-53115 Bonn, Germany
| | - Andreas Hansen
- Mulliken
Center for Theoretical Chemistry, Institut für Physikalische
und Theoretische Chemie, Universität Bonn, Beringstraße
4, D-53115 Bonn, Germany
| | - Stefan Grimme
- Mulliken
Center for Theoretical Chemistry, Institut für Physikalische
und Theoretische Chemie, Universität Bonn, Beringstraße
4, D-53115 Bonn, Germany
| | - Jean-Pierre Djukic
- Institut
de Chimie de Strasbourg, UMR 7177 CNRS, Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| |
Collapse
|
9
|
Competitive binding of anticancer drugs 5-fluorouracil and cyclophosphamide with serum albumin: Calorimetric insights. Biochim Biophys Acta Gen Subj 2016; 1860:917-929. [DOI: 10.1016/j.bbagen.2016.01.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 01/27/2016] [Accepted: 01/30/2016] [Indexed: 11/22/2022]
|
10
|
Jehi SE, Li X, Sandhu R, Ye F, Benmerzouga I, Zhang M, Zhao Y, Li B. Suppression of subtelomeric VSG switching by Trypanosoma brucei TRF requires its TTAGGG repeat-binding activity. Nucleic Acids Res 2014; 42:12899-911. [PMID: 25313155 PMCID: PMC4227783 DOI: 10.1093/nar/gku942] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Trypanosoma brucei causes human African trypanosomiasis and regularly switches its major surface antigen, VSG, in the bloodstream of its mammalian host to evade the host immune response. VSGs are expressed exclusively from subtelomeric loci, and we have previously shown that telomere proteins TbTIF2 and TbRAP1 play important roles in VSG switching and VSG silencing regulation, respectively. We now discover that the telomere duplex DNA-binding factor, TbTRF, also plays a critical role in VSG switching regulation, as a transient depletion of TbTRF leads to significantly more VSG switching events. We solved the NMR structure of the DNA-binding Myb domain of TbTRF, which folds into a canonical helix-loop-helix structure that is conserved to the Myb domains of mammalian TRF proteins. The TbTRF Myb domain tolerates well the bulky J base in T. brucei telomere DNA, and the DNA-binding affinity of TbTRF is not affected by the presence of J both in vitro and in vivo. In addition, we find that point mutations in TbTRF Myb that significantly reduced its in vivo telomere DNA-binding affinity also led to significantly increased VSG switching frequencies, indicating that the telomere DNA-binding activity is critical for TbTRF's role in VSG switching regulation.
Collapse
Affiliation(s)
- Sanaa E Jehi
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH 44115, USA
| | - Xiaohua Li
- Department of Applied Biology and Chemical Technology, State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, P.R. China
| | - Ranjodh Sandhu
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH 44115, USA
| | - Fei Ye
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Imaan Benmerzouga
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH 44115, USA
| | - Mingjie Zhang
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Yanxiang Zhao
- Department of Applied Biology and Chemical Technology, State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China
| | - Bibo Li
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH 44115, USA Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA Department of Molecular Genetics, Cleveland Clinic Lerner Research Institute, Cleveland, OH 44195, USA The Rockefeller University, New York, NY 10065, USA
| |
Collapse
|