1
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Moreira RS, da Silva MM, de Melo Vasconcelos CF, da Silva TD, Cordeiro GG, Mattos-Jr LAR, da Rocha Pitta MG, de Melo Rêgo MJB, Pereira MC. Siglec 15 as a biomarker or a druggable molecule for non-small cell lung cancer. J Cancer Res Clin Oncol 2023; 149:17651-17661. [PMID: 37843557 DOI: 10.1007/s00432-023-05437-z] [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] [Received: 08/01/2023] [Accepted: 09/18/2023] [Indexed: 10/17/2023]
Abstract
Lung cancer has been the main cause of cancer mortality worldwide. Furthermore, lung cancer rates of new cases per year evidenced a large incidence of this neoplasm in both men and women. Because there is no biomarker for early detection, it is frequently detected late, at an advanced state. The introduction of multiple lines of tyrosine kinase inhibitors in patients with EGFR, ALK, ROS1, and NTRK mutations has modified the therapy of lung cancer. Immunotherapy advances have resulted in substantial improvements in overall survival and disease-free survival, making immune checkpoint inhibitors (ICIs) a potential option for lung cancer treatment. Current PD-1/PD-L1/CTLA-4 immunotherapies have resulted in important response and survival rates. However, existing medicines only function in around 20% of unselected, advanced NSCLC patients, and primary and acquired resistance remain unsolved obstacles. Therefore, precise predictive indicators must be identified to choose the best patients for ICI treatment. Thus, Sialic acid-binding immunoglobulin-like lectin 15 (Siglec-15) stands out as a potential tumor biomarker, with distinctive expression in normal tissues, in tumor immune involvement, and a high structural similarity to PD-L1. Understanding the tumor immune response and the search for new therapeutic targets leads to the improvement of therapeutic pathways directed at the tumor microenvironment. The present review aims to analyze Siglec-15 potential as a diagnostic, prognostic, and response biomarker in lung cancer, considering its results evidenced in the current literature.
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Affiliation(s)
- Rodrigo Santiago Moreira
- Suely-Galdino Therapeutic Innovation Research Center (NUPIT-SG), Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Marillya Morais da Silva
- Suely-Galdino Therapeutic Innovation Research Center (NUPIT-SG), Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | - Thiago Douberin da Silva
- Suely-Galdino Therapeutic Innovation Research Center (NUPIT-SG), Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | - Luiz Alberto Reis Mattos-Jr
- Department of Clinic Medicine, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife, PE, Brazil
| | - Maira Galdino da Rocha Pitta
- Suely-Galdino Therapeutic Innovation Research Center (NUPIT-SG), Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | - Michelly Cristiny Pereira
- Suely-Galdino Therapeutic Innovation Research Center (NUPIT-SG), Federal University of Pernambuco, Recife, Pernambuco, Brazil.
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2
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Dolan JP, Cosgrove SC, Miller GJ. Biocatalytic Approaches to Building Blocks for Enzymatic and Chemical Glycan Synthesis. JACS AU 2023; 3:47-61. [PMID: 36711082 PMCID: PMC9875253 DOI: 10.1021/jacsau.2c00529] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
While the field of biocatalysis has bloomed over the past 20-30 years, advances in the understanding and improvement of carbohydrate-active enzymes, in particular, the sugar nucleotides involved in glycan building block biosynthesis, have progressed relatively more slowly. This perspective highlights the need for further insight into substrate promiscuity and the use of biocatalysis fundamentals (rational design, directed evolution, immobilization) to expand substrate scopes toward such carbohydrate building block syntheses and/or to improve enzyme stability, kinetics, or turnover. Further, it explores the growing premise of using biocatalysis to provide simple, cost-effective access to stereochemically defined carbohydrate materials, which can undergo late-stage chemical functionalization or automated glycan synthesis/polymerization.
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3
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Anwar MT, Adak AK, Kawade SK, Wu HR, Angata T, Lin CC. Combining CuAAC reaction enables sialylated Bi- and triantennary pseudo mannose N-glycans for investigating Siglec-7 interactions. Bioorg Med Chem 2022; 67:116839. [PMID: 35640379 DOI: 10.1016/j.bmc.2022.116839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 11/02/2022]
Abstract
Naturally occurring N-glycans display much diversity in modifications, linkages, and peripheral presentation of the oligosaccharide chain. Despite continued advancements in oligosaccharide synthesis, synthetic access to these natural glycans remains challenging. Biologically relevant complex N-glycan mimetics with various natural and unnatural modifications are an alternate way for investigating glycan-protein interactions. Further supporting this pattern, we report here a new class of sialylated bi- and triantennary pseudo mannose N-glycans reproducing orientation of the underlying glycan chain and branching patterns and replacing the two inner mannopyranosyl units with 1,2,3-triazole rings. Such mimetics are straightforwardly generated by implementing multiple intermolecular Cu(I)-catalyzed azide-alkyne cycloaddition between chemoenzymatically synthesized azido sialosides and rationally designed C-3 and C-6 di-O- or C-2, C-3, and C-6 tri-O-alkynylated mannoside. Human recombinant Siglec-7-Fc fusion protein recognizes almost all sialylated pseudo mannose N-glycans in the microarray. However, a differential Sia-binding pattern was also observed. Given the library size, comparison of pairwise mannose N-glycan combinations showed that biantennary linear α(2,3)α(2,8)- and α(2,6)α(2,8)- or branched α(2,3)α(2,6)-, and triantennary branched α(2,3)α(2,6)-sialyl pseudo N-glycans possess similar binding capabilities and affinity to recombinant Siglec-7-Fc. While the full range of topological mannose arms remain elusive, the bi- and triantennary mimics are simpler structures for interrogating Siglec interactions.
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Affiliation(s)
| | - Avijit K Adak
- Department of Chemistry, National Tsing Hua University, Hsinchu 30044, Taiwan
| | - Sachin Kisan Kawade
- Department of Chemistry, National Tsing Hua University, Hsinchu 30044, Taiwan
| | - Hsin-Ru Wu
- Instrumentation Center, National Tsing Hua University, Hsinchu 30044, Taiwan
| | - Takashi Angata
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Chun-Cheng Lin
- Department of Chemistry, National Tsing Hua University, Hsinchu 30044, Taiwan; Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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4
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Chang LY, Liang SY, Lu SC, Tseng HC, Tsai HY, Tang CJ, Sugata M, Chen YJ, Chen YJ, Wu SJ, Lin KI, Khoo KH, Angata T. Molecular Basis and Role of Siglec-7 Ligand Expression on Chronic Lymphocytic Leukemia B Cells. Front Immunol 2022; 13:840388. [PMID: 35711441 PMCID: PMC9195294 DOI: 10.3389/fimmu.2022.840388] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 04/27/2022] [Indexed: 11/13/2022] Open
Abstract
Siglec-7 (sialic acid-binding immunoglobulin-like lectin 7) is an immune checkpoint-like glycan recognition protein on natural killer (NK) cells. Cancer cells often upregulate Siglec ligands to subvert immunosurveillance, but the molecular basis of Siglec ligands has been elusive. In this study, we investigated Siglec-7 ligands on chronic lymphocytic leukemia (CLL) B cells. CLL B cells express higher levels of Siglec-7 ligands compared with healthy donor B cells, and enzymatic removal of sialic acids or sialomucins makes them more sensitive to NK cell cytotoxicity. Gene knockout experiments have revealed that the sialyltransferase ST6GalNAc-IV is responsible for the biosynthesis of disialyl-T (Neu5Acα2-3Galβ1-3[Neu5Acα2-6]GalNAcα1-), which is the glycotope recognized by Siglec-7, and that CD162 and CD45 are the major carriers of this glycotope on CLL B cells. Analysis of public transcriptomic datasets indicated that the low expression of GCNT1 (encoding core 2 GlcNAc transferase, an enzyme that competes against ST6GalNAc-IV) and high expression of ST6GALNAC4 (encoding ST6GalNAc-IV) in CLL B cells, together enhancing the expression of the disialyl-T glycotope, are associated with poor patient prognosis. Taken together, our results determined the molecular basis of Siglec-7 ligand overexpression that protects CLL B cells from NK cell cytotoxicity and identified disialyl-T as a potential prognostic marker of CLL.
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Affiliation(s)
- Lan-Yi Chang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Suh-Yuen Liang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Shao-Chia Lu
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Huan Chuan Tseng
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Ho-Yang Tsai
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Genomics Research Center, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
| | - Chin-Ju Tang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Marcelia Sugata
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Yi-Ju Chen
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan
| | - Yu-Ju Chen
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan
| | - Shang-Ju Wu
- Division of Hematology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Kuo-I Lin
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Kay-Hooi Khoo
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
| | - Takashi Angata
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
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5
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Li P, Kawade SK, Adak AK, Shen Y, Fan C, Hsieh Y, Angata T, Chen Y, Lin C. Ligand‐assisted imprinting‐probe‐labeling
strategy reveals Siglec‐7 ‐ glycoprotein interactions. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Pei‐Jhen Li
- Department of Chemistry and Biochemistry National Chung Cheng University Chiayi Taiwan
| | | | - Avijit K. Adak
- Department of Chemistry National Tsing Hua University Hsinchu Taiwan
| | - Yu‐Ju Shen
- Department of Chemistry National Tsing Hua University Hsinchu Taiwan
| | - Chen‐Yo Fan
- Department of Chemistry National Tsing Hua University Hsinchu Taiwan
| | - Yu‐Heng Hsieh
- Institute of Chemistry, Academia Sinica Taipei Taiwan
| | - Takashi Angata
- Institute of Biological Chemistry, Academia Sinica Taipei Taiwan
| | - Yu‐Ju Chen
- Institute of Chemistry, Academia Sinica Taipei Taiwan
| | - Chun‐Cheng Lin
- Department of Chemistry National Tsing Hua University Hsinchu Taiwan
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung Taiwan
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6
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Sugar nucleotide regeneration system for the synthesis of Bi- and triantennary N-glycans and exploring their activities against siglecs. Eur J Med Chem 2022; 232:114146. [DOI: 10.1016/j.ejmech.2022.114146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/17/2022] [Accepted: 01/17/2022] [Indexed: 11/18/2022]
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7
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Yoshimura A, Asahina Y, Chang LY, Angata T, Tanaka H, Kitajima K, Sato C. Identification and functional characterization of a Siglec-7 counter-receptor on K562 cells. J Biol Chem 2021; 296:100477. [PMID: 33640457 PMCID: PMC8040268 DOI: 10.1016/j.jbc.2021.100477] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 02/18/2021] [Accepted: 02/24/2021] [Indexed: 12/16/2022] Open
Abstract
Sialic acid (Sia)-binding immunoglobulin-like lectin 7 (Siglec-7) is an inhibitory receptor primarily expressed on natural killer (NK) cells and monocytes. Siglec-7 is known to negatively regulate the innate immune system through Sia binding to distinguish self and nonself; however, a counter-receptor bearing its natural ligand remains largely unclear. Here, we identified a counter-receptor of Siglec-7 using K562 hematopoietic carcinoma cells presenting cell surface ligands for Siglec-7. We affinity-purified the ligands using Fc-ligated recombinant Siglec-7 and diSia-dextran polymer, a strong inhibitor for Siglec-7. We then confirmed the counter-receptor for Siglec-7 as leukosialin (CD43) through mass spectrometry, immunoprecipitation, and proximity labeling. Additionally, we demonstrated that the cytotoxicity of NK cells toward K562 cells was suppressed by overexpression of leukosialin in a Siglec-7-dependent manner. Taken together, our data suggest that leukosialin on K562 is a counter-receptor for Siglec-7 on NK cells and that a cluster of the Sia-containing glycan epitope on leukosialin is key as trans-ligand for unmasking the cis-ligand.
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Affiliation(s)
- Atsushi Yoshimura
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, Japan; Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Japan
| | - Yuki Asahina
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, Japan; Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Japan
| | - Lan-Yi Chang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Takashi Angata
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Hiroshi Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo, Japan
| | - Ken Kitajima
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, Japan; Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Japan; Integrated Glyco-Biomedical Research Center (iGMed), Nagoya University, Chikusa, Nagoya, Japan; Institute for Glyco-Core Research (iGCORE), Nagoya University, Chikusa, Nagoya, Japan
| | - Chihiro Sato
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, Japan; Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Japan; Integrated Glyco-Biomedical Research Center (iGMed), Nagoya University, Chikusa, Nagoya, Japan; Institute for Glyco-Core Research (iGCORE), Nagoya University, Chikusa, Nagoya, Japan.
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8
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Shirakawa A, Manabe Y, Fukase K. Recent Advances in the Chemical Biology of N-Glycans. Molecules 2021; 26:molecules26041040. [PMID: 33669465 PMCID: PMC7920464 DOI: 10.3390/molecules26041040] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/08/2021] [Accepted: 02/14/2021] [Indexed: 12/19/2022] Open
Abstract
Asparagine-linked N-glycans on proteins have diverse structures, and their functions vary according to their structures. In recent years, it has become possible to obtain high quantities of N-glycans via isolation and chemical/enzymatic/chemoenzymatic synthesis. This has allowed for progress in the elucidation of N-glycan functions at the molecular level. Interaction analyses with lectins by glycan arrays or nuclear magnetic resonance (NMR) using various N-glycans have revealed the molecular basis for the recognition of complex structures of N-glycans. Preparation of proteins modified with homogeneous N-glycans revealed the influence of N-glycan modifications on protein functions. Furthermore, N-glycans have potential applications in drug development. This review discusses recent advances in the chemical biology of N-glycans.
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Affiliation(s)
- Asuka Shirakawa
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan;
| | - Yoshiyuki Manabe
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan;
- Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Correspondence: (Y.M.); (K.F.); Tel.: +81-6-6850-5391 (Y.M.); +81-6-6850-5388 (K.F.)
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan;
- Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Correspondence: (Y.M.); (K.F.); Tel.: +81-6-6850-5391 (Y.M.); +81-6-6850-5388 (K.F.)
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9
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Mikkola S. Nucleotide Sugars in Chemistry and Biology. Molecules 2020; 25:E5755. [PMID: 33291296 PMCID: PMC7729866 DOI: 10.3390/molecules25235755] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/02/2020] [Accepted: 12/04/2020] [Indexed: 12/15/2022] Open
Abstract
Nucleotide sugars have essential roles in every living creature. They are the building blocks of the biosynthesis of carbohydrates and their conjugates. They are involved in processes that are targets for drug development, and their analogs are potential inhibitors of these processes. Drug development requires efficient methods for the synthesis of oligosaccharides and nucleotide sugar building blocks as well as of modified structures as potential inhibitors. It requires also understanding the details of biological and chemical processes as well as the reactivity and reactions under different conditions. This article addresses all these issues by giving a broad overview on nucleotide sugars in biological and chemical reactions. As the background for the topic, glycosylation reactions in mammalian and bacterial cells are briefly discussed. In the following sections, structures and biosynthetic routes for nucleotide sugars, as well as the mechanisms of action of nucleotide sugar-utilizing enzymes, are discussed. Chemical topics include the reactivity and chemical synthesis methods. Finally, the enzymatic in vitro synthesis of nucleotide sugars and the utilization of enzyme cascades in the synthesis of nucleotide sugars and oligosaccharides are briefly discussed.
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Affiliation(s)
- Satu Mikkola
- Department of Chemistry, University of Turku, 20014 Turku, Finland
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10
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Bacterial sialyltransferases and their use in biocatalytic cascades for sialo-oligosaccharide production. Biotechnol Adv 2020; 44:107613. [DOI: 10.1016/j.biotechadv.2020.107613] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 12/17/2022]
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11
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Movsisyan LD, Macauley MS. Structural advances of Siglecs: insight into synthetic glycan ligands for immunomodulation. Org Biomol Chem 2020; 18:5784-5797. [PMID: 32756649 DOI: 10.1039/d0ob01116a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Sialic acid-binding immunoglobulin-like lectins (Siglecs) are transmembrane proteins of the immunoglobulin (Ig) superfamily predominantly expressed on the cells of our immune system. Siglecs recognize sialic acid via their terminal V-set domain. In mammals, sialic acid-terminated glycolipids and glycoproteins are the ligands of Siglecs, and the monomeric affinity of Siglecs for their sialic acid-containing ligands is weak. Significant efforts have been devoted toward the development of chemically modified sialoside ligands to target Siglecs with higher affinity and selectivity. In this review we discuss natural and synthetic sialoside ligands for each human Siglec, emphasizing the ligand binding determinants uncovered from recent advances in protein structural information. Potential therapeutic applications of these ligands are also discussed.
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Affiliation(s)
- Levon D Movsisyan
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Matthew S Macauley
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada and Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada.
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12
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Chen C, Wang S, Gadi MR, Zhu H, Liu F, Liu CC, Li L, Wang F, Ling P, Cao H. Enzymatic modular synthesis and microarray assay of poly-N-acetyllactosamine derivatives. Chem Commun (Camb) 2020; 56:7549-7552. [PMID: 32579622 DOI: 10.1039/d0cc03268a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A facile enzymatic modular assembly strategy for the preparative-scale synthesis of poly-N-acetyllactosamine (poly-LacNAc) glycans with varied lengths and designed sialylation and/or fucosylation patterns is described. These glycans were printed as a microarray to investigate their interactions with a panel of glycan binding proteins (GBPs). Binding affinities revealed that the avidity of GBPs could be largely affected by the length and the patterns of sialylation and fucosylation.
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Affiliation(s)
- Congcong Chen
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology (Ministry of Education), Cheeloo College of Medicine, Shandong University, Jinan 250012, China.
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13
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Li PJ, Anwar MT, Fan CY, Juang DS, Lin HY, Chang TC, Kawade SK, Chen HJ, Chen YJ, Tan KT, Lin CC. Fluorescence "Turn-on" Lectin Sensors Fabricated by Ligand-Assisted Labeling Probes for Detecting Protein-Glycoprotein Interactions. Biomacromolecules 2020; 21:815-824. [PMID: 31891486 DOI: 10.1021/acs.biomac.9b01495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Elucidation of protein-protein interactions (PPIs) is often very challenging and yields complex and unclear results. Lectin-glycoprotein interactions are especially difficult to study due to the noncovalent nature of the interactions and inherently low binding affinities of proteins to glycan ligands on glycoproteins. Here, we report a "ligand-directed labeling probe (LLP)"-based approach to fabricate protein probes for elucidating protein-glycoprotein interactions. LLP was designed with dual photoactivatable groups for the introduction of an alkyne handle proximal to the carbohydrate-binding pocket of lectins, Ricinus communis agglutinin 120 (RCA120) and recombinant human Siglec-2-Fc. In proof-of-principle studies, alkynylated lectins were conjugated with a photoreactive diazirine cross-linker and an environment-sensitive fluorophore, respectively, by the bioorthogonal click reaction. The modified RCA120 or Siglec-2-Fc was used for detecting the interaction with the target glycoprotein in the solution or endogenously expressed glycoproteins on live HeLa cells. We anticipate that the fabrication of these protein probes will accelerate the discovery of novel PPIs.
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Affiliation(s)
- Pei-Jhen Li
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan
| | - Mohammad Tarigue Anwar
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan
| | - Chen-Yo Fan
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan
| | - Duane S Juang
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan
| | - Hsin-Yi Lin
- Institute of Chemistry , Academia Sinica , Taipei 11529 , Taiwan
| | - Tsung-Che Chang
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan
| | - Sachin Kisan Kawade
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan
| | - Hsiang-Jung Chen
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan
| | - Yu-Ju Chen
- Institute of Chemistry , Academia Sinica , Taipei 11529 , Taiwan
| | - Kui-Thong Tan
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan
| | - Chun-Cheng Lin
- Department of Chemistry , National Tsing Hua University , 101 Section 2, Kuang Fu Road , Hsinchu 30013 , Taiwan.,Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 80708 , Taiwan
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14
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Angata T. Siglec-15: a potential regulator of osteoporosis, cancer, and infectious diseases. J Biomed Sci 2020; 27:10. [PMID: 31900164 PMCID: PMC6941304 DOI: 10.1186/s12929-019-0610-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/19/2019] [Indexed: 12/13/2022] Open
Abstract
Siglec-15 is a member of the Siglec family of glycan-recognition proteins, primarily expressed on a subset of myeloid cells. Siglec-15 has been known to be involved in osteoclast differentiation, and is considered to be a potential therapeutic target for osteoporosis. Recent studies revealed unexpected roles of Siglec-15 in microbial infection and the cancer microenvironment, expanding the potential pathophysiological roles of Siglec-15. Chemical biology has advanced our understanding of the nature of Siglec-15 ligands, but the exact nature of Siglec-15 ligand depends on the biological context, leaving plenty of room for further exploration.
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Affiliation(s)
- Takashi Angata
- Institute of Biological Chemistry, Academia Sinica, 128, Section 2, Academia Road, Nankang District, Taipei, Taiwan.
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