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Hatakeyama T, Masuda K, Kudo M, Tanaka K, Takeuchi A, Unno H. Mannose oligosaccharide recognition of CGL1, a mannose-specific lectin containing DM9 motifs from Crassostrea gigas, revealed by X-ray crystallographic analysis. J Biochem 2023; 175:35-41. [PMID: 37793172 DOI: 10.1093/jb/mvad073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/15/2023] [Accepted: 09/26/2023] [Indexed: 10/06/2023] Open
Abstract
CGL1 is a mannose-specific lectin isolated from the Pacific oyster Crassostrea gigas, and it belongs to the DM9 domain protein family. Each subunit of the CGL1 dimer consists of a tandem repeat of DM9 motifs, which were originally found in the Drosophila melanogaster genome. The CGL1 protomer contains two carbohydrate-binding sites: a high-affinity site A and a low-affinity site B. An assay using dendrimers containing oligomannose from yeast (Saccharomyces cerevisiae) revealed that CGL1 exhibited significantly higher affinity for mannotetraose (Man4) compared to mannobiose (Man2) and mannotriose (Man3). To investigate its oligomannose-recognition mechanism, X-ray crystallographic analyses of CGL1/oligomannose complexes were performed. In the CGL1/Man2 and CGL1/Man3 complexes, Manα1-2Man and Manα1-2Manα1-2Man, respectively, were primarily bound to site A, interacting with the non-reducing mannose residue. On the other hand, in the CGL1/Man4 crystal, Man4 (Manα1-2Manα1-2Manα1-6Man) was bound at both site A and site B at the non-reducing and reducing ends, thus linking adjacent CGL1 molecules with crystallographic symmetry. These findings suggest that CGL1 can recognize both the non-reducing and reducing mannose residues of mannose oligosaccharides at its two distinct carbohydrate-binding sites. This enables efficient complex formation, making CGL1 a pattern-recognition molecule capable of recognizing diverse structures of mannose-containing carbohydrate chains.
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Affiliation(s)
- Tomomitsu Hatakeyama
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Kazuki Masuda
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Mizuki Kudo
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Koshi Tanaka
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Ayaka Takeuchi
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Hideaki Unno
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
- Organization for Marine Science and Technology, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
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Hädrich G, Vaz GR, Bidone J, Yurgel VC, Teixeira HF, Gonçalves Dal Bó A, da Silva Pinto L, Hort MA, Ramos DF, Junior ASV, Almeida da Silva PE, Dora CL. Development of a Novel Lipid-Based Nanosystem Functionalized with WGA for Enhanced Intracellular Drug Delivery. Pharmaceutics 2022; 14:2022. [PMID: 36297456 PMCID: PMC9611000 DOI: 10.3390/pharmaceutics14102022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/08/2022] [Accepted: 09/19/2022] [Indexed: 11/17/2022] Open
Abstract
Despite a considerable number of new antibiotics under going clinical trials, treatment of intracellular pathogens still represents a major pharmaceutical challenge. The use of lipid nanocarriers provides several advantages such as protection from compound degradation, increased bioavailability, and controlled and targeted drug release. Wheat germ agglutinin (WGA) is known to have its receptors on the alveolar epithelium and increase phagocytosis. The present study aimed to produce nanostructured lipid carriers with novel glycosylated amphiphilic employed to attach WGA on the surface of the nanocarriers to improve intracellular drug delivery. High-pressure homogenization was employed to prepare the lipid nanocarriers. In vitro, high-content analysis and flow cytometry assay was employed to study the increased uptake by macrophages when the nanocarriers were grafted with WGA. A lipid nanocarrier with surface-functionalized WGA protein (~200 nm, PDI > 0.3) was successfully produced and characterized. The system was loaded with a lipophilic model compound (quercetin; QU), demonstrating the ability to encapsulate a high amount of compound and release it in a controlled manner. The nanocarrier surface functionalization with the WGA protein increased the phagocytosis by macrophages. The system proposed here has characteristics to be further explored to treat intracellular pathogens.
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Affiliation(s)
- Gabriela Hädrich
- Department of Pharmaceutical Technology and Biopharmacy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Gustavo Richter Vaz
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Juliana Bidone
- Center of Chemical, Pharmaceutical and Food Sciences, Federal University of Pelotas, Pelotas 96010-610, Brazil
| | - Virginia Campello Yurgel
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Helder Ferreira Teixeira
- Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul, Porto Alegre 90610-000, Brazil
| | - Alexandre Gonçalves Dal Bó
- Graduate Program in Science and Materials Engineering, University of the Extreme South of Santa Catarina, Criciúma 88806-000, Brazil
| | - Luciano da Silva Pinto
- Graduate Program in Biotechnology, Campus Capão do Leão, Federal University of Pelotas, Pelotas 96010-610, Brazil
| | - Mariana Appel Hort
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Daniela Fernandes Ramos
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | | | | | - Cristiana Lima Dora
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
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Sun Y, Qiao Z, Muchero W, Chen JG. Lectin Receptor-Like Kinases: The Sensor and Mediator at the Plant Cell Surface. FRONTIERS IN PLANT SCIENCE 2020; 11:596301. [PMID: 33362827 PMCID: PMC7758398 DOI: 10.3389/fpls.2020.596301] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/19/2020] [Indexed: 05/17/2023]
Abstract
Lectin receptor-like kinases (LecRLKs), a plant-specific receptor-like kinase (RLK) sub-family, have been recently found to play crucial roles in plant development and responses to abiotic and biotic stresses. In this review, we first describe the classification and structures of Lectin RLKs. Then we focus on the analysis of functions of LecRLKs in various biological processes and discuss the status of LecRLKs from the ligands they recognize, substrate they target, signaling pathways they are involved in, to the overall regulation of growth-defense tradeoffs. LecRLKs and the signaling components they interact with constitute recognition and protection systems at the plant cell surface contributing to the detection of environmental changes monitoring plant fitness.
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Hatakeyama T, Ichise A, Unno H, Goda S, Oda T, Tateno H, Hirabayashi J, Sakai H, Nakagawa H. Carbohydrate recognition by the rhamnose-binding lectin SUL-I with a novel three-domain structure isolated from the venom of globiferous pedicellariae of the flower sea urchin Toxopneustes pileolus. Protein Sci 2017; 26:1574-1583. [PMID: 28470711 DOI: 10.1002/pro.3185] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/20/2017] [Accepted: 04/24/2017] [Indexed: 11/06/2022]
Abstract
The globiferous pedicellariae of the venomous sea urchin Toxopneustes pileolus contains several biologically active proteins. We have cloned the cDNA of one of the toxin components, SUL-I, which is a rhamnose-binding lectin (RBL) that acts as a mitogen through binding to carbohydrate chains on target cells. Recombinant SUL-I (rSUL-I) was produced in Escherichia coli cells, and its carbohydrate-binding specificity was examined with the glycoconjugate microarray analysis, which suggested that potential target carbohydrate structures are galactose-terminated N-glycans. rSUL-I exhibited mitogenic activity for murine splenocyte cells and toxicity against Vero cells. The three-dimensional structure of the rSUL-I/l-rhamnose complex was determined by X-ray crystallographic analysis at a 1.8 Å resolution. The overall structure of rSUL-I is composed of three distinctive domains with a folding structure similar to those of CSL3, a RBL from chum salmon (Oncorhynchus keta) eggs. The bound l-rhamnose molecules are mainly recognized by rSUL-I through hydrogen bonds between its 2-, 3-, and 4-hydroxy groups and Asp, Asn, and Glu residues in the binding sites, while Tyr and Ser residues participate in the recognition mechanism. It was also inferred that SUL-I may form a dimer in solution based on the molecular size estimated via dynamic light scattering as well as possible contact regions in its crystal structure.
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Affiliation(s)
- Tomomitsu Hatakeyama
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, 852-8521, Japan
| | - Ayaka Ichise
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, 852-8521, Japan
| | - Hideaki Unno
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, 852-8521, Japan
| | - Shuichiro Goda
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, 852-8521, Japan
| | - Tatsuya Oda
- Division of Biochemistry, Faculty of Fisheries, Nagasaki University, 852-8521, Japan
| | - Hiroaki Tateno
- Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8568, Japan
| | - Jun Hirabayashi
- Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8568, Japan
| | - Hitomi Sakai
- Center for Technical Support, Faculty of Science and Technology, Tokushima University, 770-8506, Japan
| | - Hideyuki Nakagawa
- Laboratory of Pharmacology, Faculty of Nursing, Shikoku University, Tokushima, 771-1192, Japan
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Mannose-recognition mutant of the galactose/N-acetylgalactosamine-specific C-type lectin CEL-I engineered by site-directed mutagenesis. Biochim Biophys Acta Gen Subj 2015; 1850:1457-65. [PMID: 25869490 DOI: 10.1016/j.bbagen.2015.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 02/27/2015] [Accepted: 04/06/2015] [Indexed: 11/21/2022]
Abstract
BACKGROUND CEL-I is a galactose/N-acetylgalactosamine-specific C-type lectin isolated from the sea cucumber Cucumaria echinata. Its carbohydrate-binding site contains a QPD (Gln-Pro-Asp) motif, which is generally recognized as the galactose specificity-determining motif in the C-type lectins. In our previous study, replacement of the QPD motif by an EPN (Glu-Pro-Asn) motif led to a weak binding affinity for mannose. Therefore, we examined the effects of an additional mutation in the carbohydrate-binding site on the specificity of the lectin. METHODS Trp105 of EPN-CEL-I was replaced by a histidine residue using site-directed mutagenesis, and the binding affinity of the resulting mutant, EPNH-CEL-I, was examined by sugar-polyamidoamine dendrimer assay, isothermal titration calorimetry, and glycoconjugate microarray analysis. Tertiary structure of the EPNH-CEL-I/mannose complex was determined by X-ray crystallographic analysis. RESULTS Sugar-polyamidoamine dendrimer assay and glycoconjugate microarray analysis revealed a drastic change in the specificity of EPNH-CEL-I from galactose/N-acetylgalactosamine to mannose. The association constant of EPNH-CEL-I for mannose was determined to be 3.17×10(3) M(-1) at 25°C. Mannose specificity of EPNH-CEL-I was achieved by stabilization of the binding of mannose in a correct orientation, in which the EPN motif can form proper hydrogen bonds with 3- and 4-hydroxy groups of the bound mannose. CONCLUSIONS Specificity of CEL-I can be engineered by mutating a limited number of amino acid residues in addition to the QPD/EPN motifs. GENERAL SIGNIFICANCE Versatility of the C-type carbohydrate-recognition domain structure in the recognition of various carbohydrate chains could become a promising platform to develop novel molecular recognition proteins.
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Hatakeyama T, Ichise A, Yonekura T, Unno H, Goda S, Nakagawa H. cDNA cloning and characterization of a rhamnose-binding lectin SUL-I from the toxopneustid sea urchin Toxopneustes pileolus venom. Toxicon 2014; 94:8-15. [PMID: 25475394 DOI: 10.1016/j.toxicon.2014.11.236] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 11/27/2014] [Indexed: 10/24/2022]
Abstract
The globiferous pedicellariae of the venomous sea urchin Toxopneustes pileolus contain several biologically active proteins. Among these, a galactose-binding lectin SUL-I isolated from the venom in the large globiferous pedicellariae shows several activities such as mitogenic, chemotactic, and cytotoxic activities through binding to the carbohydrate chains on the cells. We cloned cDNA encoding SUL-I by reverse transcription-PCR using the degenerate primers designed on the basis of the N-terminal amino acid sequence of the protein and expressed the recombinant SUL-I (rSUL-I) in Escherichia coli cells. The SUL-I gene contains an open reading frame of 927 nucleotides corresponding to 308 amino acid residues, including 24 residues of a putative signal sequence. The mature protein with 284 residues is composed of three homologous regions, each showing similarity with the carbohydrate-recognition domains of the rhamnose-binding lectins, which have been mostly found in fish eggs. While rSUL-I exhibited binding activity for several galactose-related sugars, the highest affinity was found for l-rhamnose among carbohydrates tested, confirming that SUL-I is a rhamnose-binding lectin. rSUL-I also showed hemagglutinating activity toward rabbit erythrocytes, indicating the existence of more than one carbohydrate-binding site to cross-link the carbohydrate chains on the cell surface, which may be closely related to its biological activities.
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Affiliation(s)
- Tomomitsu Hatakeyama
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan.
| | - Ayaka Ichise
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Tomokazu Yonekura
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Hideaki Unno
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Shuichiro Goda
- Biomolecular Chemistry Laboratory, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Hideyuki Nakagawa
- Division of Environmental Symbiosis, Graduate School of Integrated Arts and Sciences, Tokushima University, Tokushima 770-8502, Japan
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Kato Y, Kochi K, Unno H, Goda S, Hatakeyama T. Manno-oligosaccharide-binding ability of mouse RegIV/GST-fusion protein evaluated by complex formation with the carbohydrate-containing polyamidoamine dendrimer. Biosci Biotechnol Biochem 2014; 78:1906-9. [PMID: 25069891 DOI: 10.1080/09168451.2014.940834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The carbohydrate-binding properties of the C-type lectin-like mouse RegIV and glutathione S-transferase-fusion protein (GST-mRegIV) were examined using carbohydrate-containing polyamidoamine dendrimers (PD). GST-mRegIV showed affinity for mannan- and manno-oligosaccharide containing PD. Binding was inhibited by manno-oligosaccharides but not by mannose or other tested carbohydrates, suggesting that the binding site may have an extended structure in contrast with typical C-type lectins.
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Affiliation(s)
- Yuta Kato
- a Biomolecular Chemistry Laboratory, Graduate School of Engineering , Nagasaki University , Nagasaki , Japan
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