1
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Xuan S, Li Y, Wu Y, Adcock IM, Zeng X, Yao X. Langerin-expressing dendritic cells in pulmonary immune-related diseases. Front Med (Lausanne) 2022; 9:909057. [PMID: 36160158 PMCID: PMC9490018 DOI: 10.3389/fmed.2022.909057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 08/12/2022] [Indexed: 11/30/2022] Open
Abstract
Dendritic cells (DCs) are “frontline” immune cells dedicated to antigen presentation. They serve as an important bridge connecting innate and adaptive immunity, and express various receptors for antigen capture. DCs are divided into various subclasses according to their differential expression of cell surface receptors and different subclasses of DCs exhibit specific immunological characteristics. Exploring the common features of each sub-category has became the focus of many studies. There are certain amounts of DCs expressing langerin in airways and peripheral lungs while the precise mechanism by which langerin+ DCs drive pulmonary disease is unclear. Langerin-expressing DCs can be further subdivided into numerous subtypes based on the co-expressed receptors, but here, we identify commonalities across these subtypes that point to the major role of langerin. Better understanding is required to clarify key disease pathways and determine potential new therapeutic approaches.
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Affiliation(s)
- Shurui Xuan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yuebei Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yunhui Wu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ian M. Adcock
- Airway Disease Section, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Xiaoning Zeng
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xin Yao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Xin Yao
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2
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Indeterminate Dendritic Cell Tumor With Persistent Complete Metabolic Response to BRAF/MEK Inhibition. Hemasphere 2020; 5:e511. [PMID: 33324955 PMCID: PMC7732267 DOI: 10.1097/hs9.0000000000000511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 10/21/2020] [Indexed: 11/26/2022] Open
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3
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Valverde P, Martínez JD, Cañada FJ, Ardá A, Jiménez-Barbero J. Molecular Recognition in C-Type Lectins: The Cases of DC-SIGN, Langerin, MGL, and L-Sectin. Chembiochem 2020; 21:2999-3025. [PMID: 32426893 PMCID: PMC7276794 DOI: 10.1002/cbic.202000238] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/19/2020] [Indexed: 12/16/2022]
Abstract
Carbohydrates play a pivotal role in intercellular communication processes. In particular, glycan antigens are key for sustaining homeostasis, helping leukocytes to distinguish damaged tissues and invading pathogens from healthy tissues. From a structural perspective, this cross‐talk is fairly complex, and multiple membrane proteins guide these recognition processes, including lectins and Toll‐like receptors. Since the beginning of this century, lectins have become potential targets for therapeutics for controlling and/or avoiding the progression of pathologies derived from an incorrect immune outcome, including infectious processes, cancer, or autoimmune diseases. Therefore, a detailed knowledge of these receptors is mandatory for the development of specific treatments. In this review, we summarize the current knowledge about four key C‐type lectins whose importance has been steadily growing in recent years, focusing in particular on how glycan recognition takes place at the molecular level, but also looking at recent progresses in the quest for therapeutics.
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Affiliation(s)
- Pablo Valverde
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - J Daniel Martínez
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - F Javier Cañada
- Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain.,CIBER de Enfermedades Respiratorias (CIBERES), Avda Monforte de Lemos 3-5, 28029, Madrid, Spain
| | - Ana Ardá
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain.,Ikerbasque, Basque Foundation for Science, 48009, Bilbao, Spain.,Department of Organic Chemistry II, Faculty of Science and Technology, UPV-EHU, 48940, Leioa, Spain
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4
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Thornton SM, Samararatne VD, Skeate JG, Buser C, Lühen KP, Taylor JR, Da Silva DM, Kast WM. The Essential Role of anxA2 in Langerhans Cell Birbeck Granules Formation. Cells 2020; 9:cells9040974. [PMID: 32326440 PMCID: PMC7227008 DOI: 10.3390/cells9040974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/01/2020] [Accepted: 04/12/2020] [Indexed: 12/15/2022] Open
Abstract
Langerhans cells (LC) are the resident antigen presenting cells of the mucosal epithelium and play an essential role in initiating immune responses. LC are the only cells in the body to contain Birbeck granules (BG), which are unique cytoplasmic organelles comprised of c-type lectin langerin. Studies of BG have historically focused on morphological characterizations, but BG have also been implicated in viral antigen processing which suggests that they can serve a function in antiviral immunity. This study focused on investigating proteins that could be involved in BG formation to further characterize their structure using transmission electron microscopy (TEM). Here, we report a critical role for the protein annexin A2 (anxA2) in the proper formation of BG structures. When anxA2 expression is downregulated, langerin expression decreases, cytoplasmic BG are nearly ablated, and the presence of malformed BG-like structures increases. Furthermore, in the absence of anxA2, we found langerin was no longer localized to BG or BG-like structures. Taken together, these results indicate an essential role for anxA2 in facilitating the proper formation of BG.
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Affiliation(s)
- Shantae M. Thornton
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, CA 90033, USA; (S.M.T.); (V.D.S.); (J.G.S.); (J.R.T.)
| | - Varsha D. Samararatne
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, CA 90033, USA; (S.M.T.); (V.D.S.); (J.G.S.); (J.R.T.)
| | - Joseph G. Skeate
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, CA 90033, USA; (S.M.T.); (V.D.S.); (J.G.S.); (J.R.T.)
| | | | - Kim P. Lühen
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90033, USA; (K.P.L.); (D.M.D.S.)
| | - Julia R. Taylor
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, CA 90033, USA; (S.M.T.); (V.D.S.); (J.G.S.); (J.R.T.)
| | - Diane M. Da Silva
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90033, USA; (K.P.L.); (D.M.D.S.)
- Department of Obstetrics & Gynecology, University of Southern California, Los Angeles, CA 90033, USA
| | - W. Martin Kast
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, CA 90033, USA; (S.M.T.); (V.D.S.); (J.G.S.); (J.R.T.)
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90033, USA; (K.P.L.); (D.M.D.S.)
- Department of Obstetrics & Gynecology, University of Southern California, Los Angeles, CA 90033, USA
- Correspondence: ; Tel.: +1-323-442-3870
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5
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van Dalen R, Fuchsberger FF, Rademacher C, van Strijp JAG, van Sorge NM. A Common Genetic Variation in Langerin (CD207) Compromises Cellular Uptake of Staphylococcus aureus. J Innate Immun 2019; 12:191-200. [PMID: 31141812 DOI: 10.1159/000500547] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 04/18/2019] [Indexed: 01/25/2023] Open
Abstract
Langerhans cells are key sentinel cells of the skin and mucosal lining. They sense microorganisms through their repertoire of pattern-recognition receptors to mount and direct appropriate immune responses. We recently demonstrated that human Langerhans cells interact with the Gram-positive pathogen Staphylococcus aureus through the Langerhans cell-specific receptor langerin (CD207). It was previously hypothesized that two linked single nucleotide polymorphisms (SNPs; N288D and K313I) in the carbohydrate recognition domain of langerin would affect interaction with microorganisms. We show that recognition of S. aureus by recombinant langerin molecules is abrogated in the co-inheriting SNP variant, which is mainly explained by the N288D SNP and further enhanced by K313I. Moreover, introduction of SNP N288D in ectopically-expressed langerin affected cellular distribution of the receptor such that langerin displayed enhanced plasma membraneexpression. Despite this increased binding of S. aureus by the langerin double SNP variant, uptake of bacteria by this langerin variant was compromised. Our findings indicate that in a proportion of the human population, the recognition and uptake of S. aureus by Langerhans cells may be affected, which could have important consequences for proper immune activation and S. aureus-associated disease.
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Affiliation(s)
- Rob van Dalen
- Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Felix F Fuchsberger
- Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Christoph Rademacher
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Jos A G van Strijp
- Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Nina M van Sorge
- Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands,
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6
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Miller ML, Porollo A, Wert S. Ultrastructure of Highly Ordered Granules in Alveolar Type II Cells in Several Species. Anat Rec (Hoboken) 2018; 301:1290-1302. [PMID: 29544026 DOI: 10.1002/ar.23805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 11/30/2017] [Accepted: 02/02/2018] [Indexed: 01/26/2023]
Abstract
Alveolar Type II cells from seven mammalian species were examined for a protein in the rough endoplasmic reticulum (RER), which showed a multilayered, repeating motif. Each motif, 100 nm in width, comprised two parallel outer dense layers, a less dense central layer, and often 1-3 faint layers on either side of the latter. Outer layers showed periodicities at 3-4 densities/100 nm of width, while layers on either side of the central layer showed 5-7 densities/100 nm of width. RER membranes were ribosome-free when parallel to these layers, but showed four ribosomes per motif at the growing ends: one ribosome at each outer dense layer, and one on either side of the less dense central layer. Granules appeared as single or as multiple motifs, stacked, curved, folded, or branching together within the same RER profile. Hexagons of around 30 nm in diameter with central densities were seen in tangential cuts of outer dense layers. Granule incidence varied: guinea pig > ferret > dog. Possible homologous structures occurred in rabbit and cat, but not in rat or mouse. Surfactant protein A (SP-A), a C-type lectin produced in Type II cells, forms trimers and bouquet-like 18-mer and can oligomerize further. Two pairs of SP-A 18-mers with carbohydrate recognition domains pointing inwardly and outwardly, stacked vertically as a column of four molecules, then repeated side by side in rows, approximated the size and layering patterns observed in these granules. Sequence analyses of SP-A from these species showed phylogenetic distances consistent with the observed occurrence and frequency of patterned granules. Anat Rec, 301:1290-1302, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Marian L Miller
- Department of Environmental Health, University of Cincinnati, College of Medicine, Cincinnati, Ohio
| | - Aleksey Porollo
- Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio.,Center for Autoimmune Genomics and Etiology, University of Cincinnati, College of Medicine, Cincinnati, Ohio
| | - Susan Wert
- Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio.,Division of Neonatology and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
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7
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A variant on chromosome 2p13.3 is associated with atopic dermatitis in Chinese Han population. Gene 2017; 628:281-285. [DOI: 10.1016/j.gene.2017.07.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/18/2017] [Accepted: 07/20/2017] [Indexed: 12/18/2022]
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8
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Botting RA, Rana H, Bertram KM, Rhodes JW, Baharlou H, Nasr N, Cunningham AL, Harman AN. Langerhans cells and sexual transmission of HIV and HSV. Rev Med Virol 2017; 27. [PMID: 28044388 DOI: 10.1002/rmv.1923] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/01/2016] [Accepted: 12/02/2016] [Indexed: 12/14/2022]
Abstract
Langerhans cells (LCs) situated in stratified squamous epithelium of the skin and mucosal tissue are amongst the first cells that sexually transmitted pathogens encounter during transmission. They are potent antigen presenting cells and play a key role in the host mounting an appropriate immune response. As such, viruses have evolved complex strategies to manipulate these cells to facilitate successful transmission. One of best studied examples is HIV, which manipulates the natural function of these cells to interact with CD4 T cells, which are the main target cell for HIV in which rapid replication occurs. However, there is controversy in the literature as to the role that LCs play in this process. Langerhans cells also play a key role in the way the body mounts an immune response to HSV, and there is also a complex interplay between the transmission of HSV and HIV that involves LCs. In this article, we review both past and present literatures with a particular focus on a few very recent studies that shed new light on the role that LCs play in the transmission and immune response to these 2 pathogens.
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Affiliation(s)
- Rachel A Botting
- The Westmead Institute for Medical Research, University of Sydney, Westmead, New South Wales, Australia
| | - Hafsa Rana
- The Westmead Institute for Medical Research, University of Sydney, Westmead, New South Wales, Australia
| | - Kirstie M Bertram
- The Westmead Institute for Medical Research, University of Sydney, Westmead, New South Wales, Australia
| | - Jake W Rhodes
- The Westmead Institute for Medical Research, University of Sydney, Westmead, New South Wales, Australia
| | - Heeva Baharlou
- The Westmead Institute for Medical Research, University of Sydney, Westmead, New South Wales, Australia
| | - Najla Nasr
- The Westmead Institute for Medical Research, University of Sydney, Westmead, New South Wales, Australia
| | - Anthony L Cunningham
- The Westmead Institute for Medical Research, University of Sydney, Westmead, New South Wales, Australia
| | - Andrew N Harman
- The Westmead Institute for Medical Research, University of Sydney, Westmead, New South Wales, Australia
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9
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Dilanian RA, Williams SR, Martin AV, Streltsov VA, Quiney HM. Whole-pattern fitting technique in serial femtosecond nanocrystallography. IUCRJ 2016; 3:127-38. [PMID: 27006776 PMCID: PMC4775161 DOI: 10.1107/s2052252516001238] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 01/19/2016] [Indexed: 05/31/2023]
Abstract
Serial femtosecond X-ray crystallography (SFX) has created new opportunities in the field of structural analysis of protein nanocrystals. The intensity and timescale characteristics of the X-ray free-electron laser sources used in SFX experiments necessitate the analysis of a large collection of individual crystals of variable shape and quality to ultimately solve a single, average crystal structure. Ensembles of crystals are commonly encountered in powder diffraction, but serial crystallography is different because each crystal is measured individually and can be oriented via indexing and merged into a three-dimensional data set, as is done for conventional crystallography data. In this way, serial femtosecond crystallography data lie in between conventional crystallography data and powder diffraction data, sharing features of both. The extremely small sizes of nanocrystals, as well as the possible imperfections of their crystallite structure, significantly affect the diffraction pattern and raise the question of how best to extract accurate structure-factor moduli from serial crystallography data. Here it is demonstrated that whole-pattern fitting techniques established for one-dimensional powder diffraction analysis can be feasibly extended to higher dimensions for the analysis of merged SFX diffraction data. It is shown that for very small crystals, whole-pattern fitting methods are more accurate than Monte Carlo integration methods that are currently used.
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Affiliation(s)
- Ruben A. Dilanian
- ARC Centre of Excellence for Advanced Molecular Imaging, School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Sophie R. Williams
- ARC Centre of Excellence for Advanced Molecular Imaging, School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Andrew V. Martin
- ARC Centre of Excellence for Advanced Molecular Imaging, School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia
| | | | - Harry M. Quiney
- ARC Centre of Excellence for Advanced Molecular Imaging, School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia
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10
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Drickamer K, Taylor ME. Recent insights into structures and functions of C-type lectins in the immune system. Curr Opin Struct Biol 2015; 34:26-34. [PMID: 26163333 PMCID: PMC4681411 DOI: 10.1016/j.sbi.2015.06.003] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 05/22/2015] [Accepted: 06/19/2015] [Indexed: 12/05/2022]
Abstract
Sugar-binding C-type carbohydrate-recognition domains fall in five structural groups. Structures for many of these domains, covering all of the groups, have been obtained. Not all human C-type lectins have clear orthologues in other mammals such as mice. Different mechanisms by which C-type lectins initiate signalling remain to be defined. Hetero-oligomeric receptors add to the complexity of overlapping specificities.
The majority of the C-type lectin-like domains in the human genome likely to bind sugars have been investigated structurally, although novel mechanisms of sugar binding are still being discovered. In the immune system, adhesion and endocytic receptors that bind endogenous mammalian glycans are often conserved, while pathogen-binding C-type lectins on cells of the innate immune system are more divergent. Lack of orthology between some human and mouse receptors, as well as overlapping specificities of many receptors and formation of receptor hetero-oligomers, can make it difficult to define the roles of individual receptors. There is good evidence that C-type lectins initiate signalling pathways in several different ways, but this function remains the least well understood from a mechanistic perspective.
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Affiliation(s)
- Kurt Drickamer
- Department of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom
| | - Maureen E Taylor
- Department of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom.
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11
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Muñoz-García JC, Chabrol E, Vivès RR, Thomas A, de Paz JL, Rojo J, Imberty A, Fieschi F, Nieto PM, Angulo J. Langerin–Heparin Interaction: Two Binding Sites for Small and Large Ligands As Revealed by a Combination of NMR Spectroscopy and Cross-Linking Mapping Experiments. J Am Chem Soc 2015; 137:4100-10. [DOI: 10.1021/ja511529x] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juan C. Muñoz-García
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), Centro
de Investigaciones Científicas Isla de La Cartuja, CSIC and Universidad de Sevilla, Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Eric Chabrol
- Univ. Grenoble Alpes, IBS, F-38044 Grenoble, France
- CNRS, IBS, F-38044, Grenoble, France
- CEA, IBS, F-38044 Grenoble, France
| | - Romain R. Vivès
- Univ. Grenoble Alpes, IBS, F-38044 Grenoble, France
- CNRS, IBS, F-38044, Grenoble, France
- CEA, IBS, F-38044 Grenoble, France
| | - Aline Thomas
- CERMAV
UPR5301, CNRS and Université Grenoble Alpes, BP 53, 38041 Grenoble cedex 9, France
| | - José L. de Paz
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), Centro
de Investigaciones Científicas Isla de La Cartuja, CSIC and Universidad de Sevilla, Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Javier Rojo
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), Centro
de Investigaciones Científicas Isla de La Cartuja, CSIC and Universidad de Sevilla, Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Anne Imberty
- CERMAV
UPR5301, CNRS and Université Grenoble Alpes, BP 53, 38041 Grenoble cedex 9, France
| | - Franck Fieschi
- Univ. Grenoble Alpes, IBS, F-38044 Grenoble, France
- CNRS, IBS, F-38044, Grenoble, France
- CEA, IBS, F-38044 Grenoble, France
| | - Pedro M. Nieto
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), Centro
de Investigaciones Científicas Isla de La Cartuja, CSIC and Universidad de Sevilla, Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Jesús Angulo
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), Centro
de Investigaciones Científicas Isla de La Cartuja, CSIC and Universidad de Sevilla, Américo Vespucio, 49, 41092 Sevilla, Spain
- School of
Pharmacy, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, U.K
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