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Jakas A, Ayyalasomayajula R, Cudic M, Jerić I. Multicomponent reaction derived small di- and tri-carbohydrate-based glycomimetics as tools for probing lectin specificity. Glycoconj J 2022. [PMID: 36001188 DOI: 10.1007/s10719-022-10079-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/14/2022] [Accepted: 08/10/2022] [Indexed: 11/04/2022]
Abstract
Lectins, carbohydrate-binding proteins, play important functions in all forms of life from bacteria and viruses to plants, animals, and humans, participating in cell-cell communication and pathogen binding. In an attempt to modify lectin functions, artificial lectin ligands were made usually as big dendrimeric or cluster multivalent glycomimetic structures. Here we synthesized a novel set of glycomimetic ligands through protection/deprotection multicomponent reactions (MCR) approach. Multivalent di-and tri-carbohydrate glycomimetics containing D-fructose, D-galactose, and D-allose moieties were prepared in 63-96% yield. MCR glycomimetics demonstrated different binding abilities for plant lectins Con A and UEA I, and human galectin-3. Information gained about the influence of molecule structure, multivalency and optical purity on the lectin binding ability can be used in lectin detection and sensitivity measurements to further facilitate understanding of carbohydrate recognition process.
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2
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FitzGerald FG, Rodriguez Benavente MC, Garcia C, Rivero Y, Singh Y, Wang H, Fields GB, Cudic M. TF-containing MUC1 glycopeptides fail to entice Galectin-1 recognition of tumor-associated Thomsen-Freidenreich (TF) antigen (CD176) in solution. Glycoconj J 2020; 37:657-666. [PMID: 33001366 DOI: 10.1007/s10719-020-09951-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/28/2020] [Accepted: 09/25/2020] [Indexed: 12/31/2022]
Abstract
Aberrant Mucin-1 (MUC1) glycosylation with the Thomsen-Friedenreich (TF) tumor-associated antigen (CD176) is a hallmark of epithelial carcinoma progression and poor patient prognosis. Recognition of TF by glycan-binding proteins, such as galectins, enables the pathological repercussions of this glycan presentation, yet the underlying binding specificities of different members of the galectin family is a matter of continual investigation. While Galectin-3 (Gal-3) recognition of TF has been well-documented at both the cellular and molecular level, Galectin-1 (Gal-1) recognition of TF has only truly been alluded to in cell-based platforms. Immunohistochemical analyses have purported Gal-1 binding to TF on MUC1 at the cell surface, however binding at the molecular level was inconclusive. We hypothesize that glycan scaffold (MUC1's tandem repeat peptide sequence) and/or multivalency play a role in the binding recognition of TF antigen by Gal-1. In this study we have developed a method for large-scale expression of Gal-1 and its histidine-tagged analog for use in binding studies by isothermal titration calorimetry (ITC) and development of an analytical method based on AlphaScreen technology to screen for Gal-1 inhibitors. Surprisingly, neither glycan scaffold or multivalent presentation of TF antigen on the scaffold was able to entice Gal-1 recognition to the level of affinity expected for functional significance. Future evaluations of the Gal-1/TF binding interaction in order to draw connections between immunohistochemical data and analytical measurements are warranted.
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Affiliation(s)
- Forrest G FitzGerald
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431, USA.,Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Maria C Rodriguez Benavente
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431, USA.,Department of Biochemistry and Molecular Biology, Complex Carbohydrate Research Center, University of Georgia, 120 E Green St, Athens, GA, 30602, USA
| | - Camelia Garcia
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431, USA
| | - Yaima Rivero
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431, USA
| | - YashoNandini Singh
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431, USA
| | - Hongjie Wang
- Department of Chemistry and Biochemistry, Florida Atlantic University, Jupiter, FL, USA
| | - Gregg B Fields
- Department of Chemistry and Biochemistry, Florida Atlantic University, Jupiter, FL, USA.,Department of Chemistry, The Scripps Research Institute/Scripps Florida, Jupiter, FL, USA
| | - Maré Cudic
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431, USA.
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Zheng Y, Su J, Miller MC, Geng J, Xu X, Zhang T, Mayzel M, Zhou Y, Mayo KH, Tai G. Topsy-turvy binding of negatively charged homogalacturonan oligosaccharides to galectin-3. Glycobiology 2020; 31:341-350. [PMID: 32909036 DOI: 10.1093/glycob/cwaa080] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/10/2020] [Accepted: 08/10/2020] [Indexed: 12/17/2022] Open
Abstract
Galectin-3 is crucial to many physiological and pathological processes. The generally accepted dogma is that galectins function extracellularly by binding specifically to β(1→4)-galactoside epitopes on cell surface glycoconjugates. Here, we used crystallography and NMR spectroscopy to demonstrate that negatively charged homogalacturonans (HG, linear polysaccharides of α(1→4)-linked-D-galacturonate (GalA)) bind to the galectin-3 carbohydrate recognition domain. The HG carboxylates at the C6 positions in GalA rings mandate that this saccharide bind galectin-3 in an unconventional, "topsy-turvy" orientation that is flipped by about 180o relative to that of the canonical β-galactoside lactose. In this binding mode, the reducing end GalA β-anomer of HGs takes the position of the nonreducing end galactose residue in lactose. This novel orientation maintains interactions with the conserved tryptophan and seven of the most crucial lactose-binding residues, albeit with different H-bonding interactions. Nevertheless, the HG molecular orientation and new interactions have essentially the same thermodynamic binding parameters as lactose. Overall, our study provides structural details for a new type of galectin-sugar interaction that broadens glycospace for ligand binding to Gal-3 and suggests how the lectin may recognize other negatively charged polysaccharides like glycoaminoglycans (e.g. heparan sulfate) on the cell surface. This discovery impacts on our understanding of galectin-mediated biological function.
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Affiliation(s)
- Yi Zheng
- Engineering Research Center of Glycoconjugates Ministry of Education, Jilin Province Key Laboratory for Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Jiyong Su
- Engineering Research Center of Glycoconjugates Ministry of Education, Jilin Province Key Laboratory for Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Michelle C Miller
- Department of Biochemistry, Molecular Biology & Biophysics, University of Minnesota, 6-155 Jackson Hall, Minneapolis, MN 55455, USA
| | - Jie Geng
- Engineering Research Center of Glycoconjugates Ministry of Education, Jilin Province Key Laboratory for Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Xuejiao Xu
- Engineering Research Center of Glycoconjugates Ministry of Education, Jilin Province Key Laboratory for Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Tao Zhang
- Engineering Research Center of Glycoconjugates Ministry of Education, Jilin Province Key Laboratory for Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Maksim Mayzel
- Bruker BioSpin AG, Applications Department, Bruker BioSpin AG, Industriestrasse 26, 8117 Fällanden, Switzerland
| | - Yifa Zhou
- Engineering Research Center of Glycoconjugates Ministry of Education, Jilin Province Key Laboratory for Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Kevin H Mayo
- Department of Biochemistry, Molecular Biology & Biophysics, University of Minnesota, 6-155 Jackson Hall, Minneapolis, MN 55455, USA
| | - Guihua Tai
- Engineering Research Center of Glycoconjugates Ministry of Education, Jilin Province Key Laboratory for Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
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Yang R, Cui L, Liu Y, Cong X, Fei R, Wu S, Wei L. A hook-effect-free homogeneous light-initiated chemiluminescence assay: is it reliable for screening and the quantification of the hepatitis B surface antigen? Ann Transl Med 2020; 8:606. [PMID: 32566632 PMCID: PMC7290535 DOI: 10.21037/atm.2020.02.59] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Hepatitis B virus (HBV) infection remains a threat to global public health. As a hallmark of HBV infection, hepatitis B surface antigen (HBsAg) has been used to screen for HBV infection for decades, and quantitative assays are also being clinically rejuvenated to predict the disease outcome and monitor the antiviral response. Herein, we developed and evaluated a hook-effect-free homogeneous quantitative HBsAg assay based on the light-initiated chemiluminescence immunoassay (LICA). Methods A hook-effect-free LICA algorithm was established by measuring the relative light units (RLUs) of two time points during the immunoreaction. The precision was assessed using low- and high-level controls. Consecutive clinical serum samples were tested using the LICA and Abbott Architect assay; samples producing inconsistent results were retested using supplementary assays including the HBsAg neutralization, HBV DNA, and Roche Elecsys HBsAg assays for further confirmation. The consistency, sensitivity, specificity, and positive and negative predictive values (PPV and NPV) were calculated. For the quantitative results, the correlation was analyzed. The coverage of different genotypes and mutations by the LICA was evaluated. Moreover, serial on-treatment and follow-up samples from chronic hepatitis B patients were also measured using the two assays. Results The LICA had better within-run and within-laboratory precisions than the Architect assay. In total, 5,176 clinical samples were tested. The two assays showed a consistency of 99.63%. The LICA showed greater specificity (99.95% vs. 99.77%) and PPV (99.75% vs. 98.77%) than the Architect assay, whereas the Architect assay showed greater sensitivity (100.00% vs. 99.01%) and NPV (100.00% vs. 99.82%). The two assays displayed an excellent correlation independent of genotypes and mutations. The LICA hook-free algorithm recognized 100% of the underestimated results. Furthermore, similar HBsAg dynamics were demonstrated using the LICA and Architect HBsAg assay. Conclusions The hook-free LICA provides a reliable tool for screening for HBV infection and quantifying HBsAg.
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Affiliation(s)
- Ruifeng Yang
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing 100044, China
| | - Liyan Cui
- Department of Clinical Laboratory, Peking University Third Hospital, Beijing 100191, China
| | - Yan Liu
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing 100044, China
| | - Xu Cong
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing 100044, China
| | - Ran Fei
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing 100044, China
| | - Shuping Wu
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing 100044, China
| | - Lai Wei
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing 100044, China
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Fan X, Wang Y, Deng L, Li L, Zhang X, Wu P. Oxidative Capacity Storage of Transient Singlet Oxygen from Photosensitization with a Redox Mediator for Improved Chemiluminescent Sensing. Anal Chem 2019; 91:9407-9412. [DOI: 10.1021/acs.analchem.9b01675] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xiaoya Fan
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Yanying Wang
- Analytical & Testing Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Li Deng
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Lin Li
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Xinfeng Zhang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Peng Wu
- Analytical & Testing Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
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Huang X, Schmidt TA, Shortt C, Arora S, Asari A, Kirsch T, Cowman MK. A competitive alphascreen assay for detection of hyaluronan. Glycobiology 2018; 28:137-147. [PMID: 29300896 DOI: 10.1093/glycob/cwx109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 12/21/2017] [Indexed: 11/12/2022] Open
Abstract
A method for specific quantification of hyaluronan (HA) concentration using AlphaScreen® (Amplified Luminescent Proximity Homogeneous Assay) technology is described. Two types of hydrogel-coated and chromophore-loaded latex nanobeads are employed. The proximity of the beads in solution is detected by excitation of the donor bead leading to the production of singlet oxygen, and chemiluminescence from the acceptor bead upon exposure to singlet oxygen. In the HA assay, the donor bead is modified with streptavidin, and binds biotin-labeled HA. The acceptor bead is modified with Ni(II), and is used to bind a specific recombinant HA-binding protein (such as HABP; aggrecan G1-IGD-G2) with a His-tag. Competitive inhibition of the HA-HABP interaction by free unlabeled HA in solution is used for quantification. The assay is specific for HA, and not dependent on HA molecular mass above the decasaccharide. HA can be quantified over a concentration range of approximately 30-1600 ng/mL using 2.5 μL of sample, for a detectable mass range of approximately 0.08-4 ng HA. This sensitivity of the AlphaScreen assay is greater than existing ELISA-like methods, due to the small volume requirements. HA can be detected in biological fluids using the AlphaScreen assay, after removal of bound proteins from HA and dilution or removal of other interfering proteins and lipids.
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Affiliation(s)
- Xiayun Huang
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, 433 First Avenue, New York, NY 10010, USA
| | - Tannin A Schmidt
- Biomedical Engineering Department, School of Dental Medicine, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030, USA
| | - Claire Shortt
- Department of Orthopedic Surgery, New York University School of Medicine, 433 First Avenue, New York, NY 10010, USA
| | - Shivani Arora
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, 433 First Avenue, New York, NY 10010, USA
| | - Akira Asari
- Hyaluronan Research Institute, Inc. 2-5-8-1001, Nihonbashimuromachi, Chuo-ku, Tokyo 103-0022,Japan
| | - Thorsten Kirsch
- Department of Orthopedic Surgery, New York University School of Medicine, 433 First Avenue, New York, NY 10010, USA
| | - Mary K Cowman
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, 433 First Avenue, New York, NY 10010, USA
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Zhang T, Zheng Y, Zhao D, Yan J, Sun C, Zhou Y, Tai G. Multiple approaches to assess pectin binding to galectin-3. Int J Biol Macromol 2016; 91:994-1001. [PMID: 27328612 DOI: 10.1016/j.ijbiomac.2016.06.058] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 06/15/2016] [Accepted: 06/18/2016] [Indexed: 11/16/2022]
Abstract
Although several approaches have been used to evaluate binding of carbohydrates to lectins, results are not always comparable, especially with larger polysaccharides. Here, we quantitatively assessed and compared binding of pectin-derived polysaccharides to galectin-3 (Gal-3) using five methods: surface plasmon resonance (SPR), bio-layer interferometry (BLI), fluorescence polarization (FP), competitive fluorescence-linked immunosorbance (cFLISA), and the well-known cell-based hemagglutination assay (G3H). Our studies revealed that whereas Gal-3-pectin binding parameters determined by SPR and BLI were comparable and correlated with inhibitory potencies from the G3H assay, results using FP and cFLISA assays were highly variable and depended greatly on the probe and mass of the polysaccharide. In the cFLISA assay, for example, pectins showed no inhibition when using the DTAF-labeled asialofetuin probe, but did when using a DTAF-labeled pectin probe. And the FP approach with the DTAF-lactose probe did not work on polysaccharides and large galactan chains, although it did work well with smaller galactans. Nevertheless, even though results derived from all of these methods are in general agreement, derived KD, IC50, and MIC values do differ. Our results reflect the variability using various techniques and therefore will be useful to investigators who are developing pectin-derived Gal-3 antagonists as anti-cancer agents.
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Affiliation(s)
- Tao Zhang
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Yi Zheng
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Dongyang Zhao
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Jingmin Yan
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Chongliang Sun
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Yifa Zhou
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China.
| | - Guihua Tai
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China.
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Abstract
Protein molecules often interact with other partner protein molecules in order to execute their vital functions in living organisms. Characterization of protein-protein interactions thus plays a central role in understanding the molecular mechanism of relevant protein molecules, elucidating the cellular processes and pathways relevant to health or disease for drug discovery, and charting large-scale interaction networks in systems biology research. A whole spectrum of methods, based on biophysical, biochemical, or genetic principles, have been developed to detect the time, space, and functional relevance of protein-protein interactions at various degrees of affinity and specificity. This article presents an overview of these experimental methods, outlining the principles, strengths and limitations, and recent developments of each type of method.
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Affiliation(s)
- Mi Zhou
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai, 200032, People's Republic of China
| | - Qing Li
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai, 200032, People's Republic of China
| | - Renxiao Wang
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai, 200032, People's Republic of China.
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Avenida Wai Long, Macau, 999078, People's Republic of China.
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9
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Zhou M, Li Q, Wang R. Current Experimental Methods for Characterizing Protein-Protein Interactions. ChemMedChem 2016. [PMID: 26864455 DOI: 10.1002/cmdc.201500495.] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Protein molecules often interact with other partner protein molecules in order to execute their vital functions in living organisms. Characterization of protein-protein interactions thus plays a central role in understanding the molecular mechanism of relevant protein molecules, elucidating the cellular processes and pathways relevant to health or disease for drug discovery, and charting large-scale interaction networks in systems biology research. A whole spectrum of methods, based on biophysical, biochemical, or genetic principles, have been developed to detect the time, space, and functional relevance of protein-protein interactions at various degrees of affinity and specificity. This article presents an overview of these experimental methods, outlining the principles, strengths and limitations, and recent developments of each type of method.
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Affiliation(s)
- Mi Zhou
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai, 200032, People's Republic of China
| | - Qing Li
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai, 200032, People's Republic of China
| | - Renxiao Wang
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai, 200032, People's Republic of China. .,State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Avenida Wai Long, Macau, 999078, People's Republic of China.
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Rodriguez MC, Yegorova S, Pitteloud JP, Chavaroche AE, André S, Ardá A, Minond D, Jiménez-Barbero J, Gabius HJ, Cudic M. Thermodynamic Switch in Binding of Adhesion/Growth Regulatory Human Galectin-3 to Tumor-Associated TF Antigen (CD176) and MUC1 Glycopeptides. Biochemistry 2015; 54:4462-74. [PMID: 26129647 PMCID: PMC4520625 DOI: 10.1021/acs.biochem.5b00555] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
![]()
A shift
to short-chain glycans is an observed change in mucin-type
O-glycosylation in premalignant and malignant epithelia. Given the
evidence that human galectin-3 can interact with mucins and also weakly
with free tumor-associated Thomsen-Friedenreich (TF) antigen (CD176),
the study of its interaction with MUC1 (glyco)peptides is of biomedical
relevance. Glycosylated MUC1 fragments that carry the TF antigen attached
through either Thr or Ser side chains were synthesized using standard
Fmoc-based automated solid-phase peptide chemistry. The dissociation
constants (Kd) for interaction of galectin-3
and the glycosylated MUC1 fragments measured by isothermal titration
calorimetry decreased up to 10 times in comparison to that of the
free TF disaccharide. No binding was observed for the nonglycosylated
control version of the MUC1 peptide. The most notable feature of the
binding of MUC1 glycopeptides to galectin-3 was a shift from a favorable
enthalpy to an entropy-driven binding process. The comparatively diminished
enthalpy contribution to the free energy (ΔG) was compensated by a considerable gain in the entropic term. 1H–15N heteronuclear single-quantum coherence
spectroscopy nuclear magnetic resonance data reveal contact at the
canonical site mainly by the glycan moiety of the MUC1 glycopeptide.
Ligand-dependent differences in binding affinities were also confirmed
by a novel assay for screening of low-affinity glycan–lectin
interactions based on AlphaScreen technology. Another key finding
is that the glycosylated MUC1 peptides exhibited activity in a concentration-dependent
manner in cell-based assays revealing selectivity among human galectins.
Thus, the presentation of this tumor-associated carbohydrate ligand
by the natural peptide scaffold enhances its affinity, highlighting
the significance of model studies of human lectins with synthetic
glycopeptides.
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Affiliation(s)
- Maria C Rodriguez
- †Department of Chemistry and Biochemistry, Charles E. Schmidt College of Science, Florida Atlantic University, 777 Glades Road, Boca Raton, Florida 33431, United States.,‡Torrey Pines Institute for Molecular Studies, 11350 Southwest Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Svetlana Yegorova
- ‡Torrey Pines Institute for Molecular Studies, 11350 Southwest Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Jean-Philippe Pitteloud
- ‡Torrey Pines Institute for Molecular Studies, 11350 Southwest Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Anais E Chavaroche
- ‡Torrey Pines Institute for Molecular Studies, 11350 Southwest Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Sabine André
- §Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinärstrasse 13, 80539 Munich, Germany
| | - Ana Ardá
- ∥CIC bioGUNE, Bizkaia Technological Park, Building 801 A, 48160 Derio, Spain
| | - Dimitriy Minond
- ‡Torrey Pines Institute for Molecular Studies, 11350 Southwest Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Jesús Jiménez-Barbero
- ∥CIC bioGUNE, Bizkaia Technological Park, Building 801 A, 48160 Derio, Spain.,⊥Ikerbasque, Basque Foundation for Science, Maria Lopez de Haro 3, 48013 Bilbao, Spain
| | - Hans-Joachim Gabius
- §Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinärstrasse 13, 80539 Munich, Germany
| | - Mare Cudic
- †Department of Chemistry and Biochemistry, Charles E. Schmidt College of Science, Florida Atlantic University, 777 Glades Road, Boca Raton, Florida 33431, United States
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Zhang M, Wisniewski JA, Ji H. AlphaScreen selectivity assay for β-catenin/B-cell lymphoma 9 inhibitors. Anal Biochem 2015; 469:43-53. [DOI: 10.1016/j.ab.2014.09.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 09/03/2014] [Accepted: 09/25/2014] [Indexed: 01/07/2023]
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Stawikowski MJ, Aukszi B, Stawikowska R, Cudic M, Fields GB. Glycosylation modulates melanoma cell α2β1 and α3β1 integrin interactions with type IV collagen. J Biol Chem 2014; 289:21591-604. [PMID: 24958723 PMCID: PMC4118119 DOI: 10.1074/jbc.m114.572073] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/20/2014] [Indexed: 01/02/2023] Open
Abstract
Although type IV collagen is heavily glycosylated, the influence of this post-translational modification on integrin binding has not been investigated. In the present study, galactosylated and nongalactosylated triple-helical peptides have been constructed containing the α1(IV)382-393 and α1(IV)531-543 sequences, which are binding sites for the α2β1 and α3β1 integrins, respectively. All peptides had triple-helical stabilities of 37 °C or greater. The galactosylation of Hyl(393) in α1(IV)382-393 and Hyl(540) and Hyl(543) in α1(IV)531-543 had a dose-dependent influence on melanoma cell adhesion that was much more pronounced in the case of α3β1 integrin binding. Molecular modeling indicated that galactosylation occurred on the periphery of α2β1 integrin interaction with α1(IV)382-393 but right in the middle of α3β1 integrin interaction with α1(IV)531-543. The possibility of extracellular deglycosylation of type IV collagen was investigated, but no β-galactosidase-like activity capable of collagen modification was found. Thus, glycosylation of collagen can modulate integrin binding, and levels of glycosylation could be altered by reduction in expression of glycosylation enzymes but most likely not by extracellular deglycosylation activity.
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Affiliation(s)
- Maciej J Stawikowski
- From the Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida 34987 and
| | - Beatrix Aukszi
- the Nova Southeastern University, Fort Lauderdale, Florida 33314
| | - Roma Stawikowska
- From the Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida 34987 and
| | - Mare Cudic
- From the Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida 34987 and
| | - Gregg B Fields
- From the Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida 34987 and
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