1
|
Ta HP, Clarisse C, Maes E, Yamakawa N, Guérardel Y, Krzewinski F, Zarzycka W, Touboul D, Girardeau A, Fonseca F, Kermarrec A, Viau M, Riaublanc A, Ropers MH. Membrane lipid composition of Carnobacterium maltaromaticum CNCM I-3298, a highly cryoresistant lactic bacterium. Chem Phys Lipids 2023; 255:105326. [PMID: 37414116 DOI: 10.1016/j.chemphyslip.2023.105326] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
The growing consumption of fermented products has led to an increasing demand for lactic acid bacteria (LAB), especially for LAB tolerant to freezing/thawing conditions. Carnobacterium maltaromaticum is a psychrotrophic and freeze-thawing resistant lactic acid bacterium. The membrane is the primary site of damage during the cryo-preservation process and requires modulation to improve cryoresistance. However, knowledge about the membrane structure of this LAB genus is limited. We presented here the first study of the membrane lipid composition of C. maltaromaticum CNCM I-3298 including the polar heads and the fatty acid compositions of each lipid family (neutral lipids, glycolipids, phospholipids). The strain CNCM I-3298 is principally composed of glycolipids (32%) and phospholipids (55%). About 95% of glycolipids are dihexaosyldiglycerides while less than 5% are monohexaosyldiglycerides. The disaccharide chain of dihexaosyldiglycerides is composed of α-Gal(1-2)-α-Glc chain, evidenced for the first time in a LAB strain other than Lactobacillus strains. Phosphatidylglycerol is the main phospholipid (94%). All polar lipids are exceptionally rich in C18:1 (from 70% to 80%). Regarding the fatty acid composition, C. maltaromaticum CNCM I-3298 is an atypical bacterium within the genus Carnobacterium due to its high C18:1 proportion but resemble the other Carnobacterium strains as they mostly do not contain cyclic fatty acids.
Collapse
Affiliation(s)
- H P Ta
- INRAE, BIA, F-44316 Nantes, France.
| | - C Clarisse
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, US 41-UAR 2014-PLBS, F-59000 Lille, France
| | - E Maes
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, US 41-UAR 2014-PLBS, F-59000 Lille, France
| | - N Yamakawa
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, US 41-UAR 2014-PLBS, F-59000 Lille, France
| | - Y Guérardel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France; Institute for Glyco-core Research (iGCORE), Gifu University, Gifu, Japan
| | - F Krzewinski
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - W Zarzycka
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - D Touboul
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - A Girardeau
- Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, F-91120 Palaiseau, France
| | - F Fonseca
- Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, F-91120 Palaiseau, France
| | | | - M Viau
- INRAE, BIA, F-44316 Nantes, France
| | | | | |
Collapse
|
2
|
Illouz M, Leclercq LD, Dessenne C, Hatfull G, Daher W, Kremer L, Guérardel Y. Multiple Mycobacterium abscessus O-acetyltransferases influence glycopeptidolipid structure and colony morphotype. J Biol Chem 2023; 299:104979. [PMID: 37390990 PMCID: PMC10400925 DOI: 10.1016/j.jbc.2023.104979] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/02/2023] Open
Abstract
Mycobacterium abscessus causes severe lung infections. Clinical isolates can have either smooth (S) or rough (R) colony morphotypes; of these, S but not R variants have abundant cell wall glycopeptidolipids (GPL) consisting of a peptidolipid core substituted by a 6-deoxy-α-L-talose (6-dTal) and rhamnose residues. Deletion of gtf1, encoding the 6-dTal transferase, results in the S-to-R transition, mycobacterial cord formation, and increased virulence, underscoring the importance of 6-dTal in infection outcomes. However, since 6-dTal is di-O-acetylated, it is unclear whether the gtf1 mutant phenotypes are related to the loss of the 6-dTal or the result of the absence of acetylation. Here, we addressed whether M. abscessus atf1 and atf2, encoding two putative O-acetyltransferases located within the gpl biosynthetic locus, transfer acetyl groups to 6-dTal. We found deletion of atf1 and/or atf2 did not drastically alter the GPL acetylation profile, suggesting there are additional enzymes with redundant functions. We subsequently identified two paralogs of atf1 and atf2, MAB_1725c and MAB_3448. While deletion of MAB_1725c and MAB_3448 had no effect on GPL acetylation, the triple atf1-atf2-MAB_1725c mutant did not synthetize fully acetylated GPL, and the quadruple mutant was totally devoid of acetylated GPL. Moreover, both triple and quadruple mutants accumulated hyper-methylated GPL. Finally, we show deletion of atf genes resulted in subtle changes in colony morphology but had no effect on M. abscessus internalization by macrophages. Overall, these findings reveal the existence of functionally redundant O-acetyltransferases and suggest that O-acetylation influences the glycan moiety of GPL by deflecting biosynthetic flux in M. abscessus.
Collapse
Affiliation(s)
- Morgane Illouz
- Centre National de la Recherche Scientifique UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, Montpellier, France
| | - Louis-David Leclercq
- UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, CNRS, Université de Lille, Lille, France
| | - Clara Dessenne
- UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, CNRS, Université de Lille, Lille, France
| | - Graham Hatfull
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Wassim Daher
- Centre National de la Recherche Scientifique UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, Montpellier, France; INSERM, IRIM, Montpellier, France
| | - Laurent Kremer
- Centre National de la Recherche Scientifique UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, Montpellier, France; INSERM, IRIM, Montpellier, France.
| | - Yann Guérardel
- UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, CNRS, Université de Lille, Lille, France; Institute for Glyco-Core Research (iGCORE), Gifu University, Gifu, Japan.
| |
Collapse
|
3
|
Wu D, Gilormini PA, Toda S, Biot C, Lion C, Guérardel Y, Sato C, Kitajima K. A novel C-domain-dependent inhibition of the rainbow trout CMP-sialic acid synthetase activity by CMP-deaminoneuraminic acid. Biochem Biophys Res Commun 2022; 617:16-21. [DOI: 10.1016/j.bbrc.2022.05.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 05/10/2022] [Indexed: 11/02/2022]
|
4
|
Daher W, Leclercq LD, Johansen MD, Hamela C, Karam J, Trivelli X, Nigou J, Guérardel Y, Kremer L. Glycopeptidolipid glycosylation controls surface properties and pathogenicity in Mycobacterium abscessus. Cell Chem Biol 2022; 29:910-924.e7. [PMID: 35358417 DOI: 10.1016/j.chembiol.2022.03.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 08/20/2021] [Revised: 12/17/2021] [Accepted: 03/10/2022] [Indexed: 12/18/2022]
Abstract
Mycobacterium abscessus is an emerging and difficult-to-manage mycobacterial species that exhibits smooth (S) or rough (R) morphotypes. Disruption of glycopeptidolipid (GPL) production results in transition from S to R and severe lung disease. A structure-activity relationship study was undertaken to decipher the role of GPL glycosylation in morphotype transition and pathogenesis. Deletion of gtf3 uncovered the prominent role of the extra rhamnose in enhancing mannose receptor-mediated internalization of M. abscessus by macrophages. In contrast, the absence of the 6-deoxy-talose and the first rhamnose in mutants lacking gtf1 and gtf2, respectively, affected M abscessus phagocytosis but also resulted in the S-to-R transition. Strikingly, gtf1 and gtf2 mutants displayed a strong propensity to form cords and abscesses in zebrafish, leading to robust and lethal infection. Together, these results underscore the importance and differential contribution of GPL monosaccharides in promoting virulence and infection outcomes.
Collapse
Affiliation(s)
- Wassim Daher
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France; INSERM, IRIM, 34293 Montpellier, France
| | - Louis-David Leclercq
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France
| | - Matt D Johansen
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France; Centre for Inflammation, Centenary Institute and University of Technology Sydney, Faculty of Science, School of Life Sciences, Sydney, NSW, Australia
| | - Claire Hamela
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France
| | - Jona Karam
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France
| | - Xavier Trivelli
- Université de Lille, CNRS, INRAE, Centrale Lille, Université d'Artois, FR 2638 - IMEC - Institut Michel-Eugène Chevreul, 59000 Lille, France
| | - Jérôme Nigou
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, Université Paul Sabatier, Toulouse, France
| | - Yann Guérardel
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France; Institute for Glyco-core Research (iGCORE), Gifu University, Gifu, Japan.
| | - Laurent Kremer
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France; INSERM, IRIM, 34293 Montpellier, France.
| |
Collapse
|
5
|
Yan S, Hodžić A, Bandini G, Yang G, Vanbeselaere J, Guérardel Y. Editorial: Characterization, Biosynthesis and Biological Functions of Novel Glyco-Epitopes. Front Mol Biosci 2022; 9:871037. [PMID: 35309506 PMCID: PMC8931030 DOI: 10.3389/fmolb.2022.871037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 02/15/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Shi Yan
- Institute of Parasitology, University of Veterinary Medicine Vienna, Vienna, VIA, Austria,*Correspondence: Shi Yan,
| | - Adnan Hodžić
- Institute of Parasitology, University of Veterinary Medicine Vienna, Vienna, VIA, Austria
| | - Giulia Bandini
- York Biomedical Research Institute and Department of Biology, University of York, York, United Kingdom
| | - Ganglong Yang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Jiangnan University, Wuxi, China
| | - Jorick Vanbeselaere
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, VIA, Austria
| | - Yann Guérardel
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France,Institute for Glyco-core Research (iGCORE), Gifu University, Gifu, Japan
| |
Collapse
|
6
|
Tseng HC, Hsiao CT, Yamakawa N, Guérardel Y, Khoo KH. Discovery Sulfoglycomics and Identification of the Characteristic Fragment Ions for High-Sensitivity Precise Mapping of Adult Zebrafish Brain-Specific Glycotopes. Front Mol Biosci 2022; 8:771447. [PMID: 34988116 PMCID: PMC8721812 DOI: 10.3389/fmolb.2021.771447] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/17/2021] [Indexed: 11/13/2022] Open
Abstract
Mass spectrometry-based high-sensitivity mapping of terminal glycotopes relies on diagnostic MS2 and/or MS3 ions that can differentiate linkage and define the location of substituents including sulfates. Unambiguous identification of adult zebrafish glycotopes is particularly challenging due to the presence of extra β4-galactosylation on the basic building block of Galβ1-4GlcNAc that can be fucosylated and variably sialylated by N-acetyl, N-glycolyl, or deaminated neuraminic acids. Building on previous groundwork that have identified various organ-specific N- and O-glycans of adult zebrafish, we show here that all the major glycotopes of interest can be readily mapped by direct nano-LC-MS/MS analysis of permethylated glycans. Homing in on the brain-, intestine-, and ovary-derived samples, organ-specific glycomic reference maps based on overlaid extracted ion chromatograms of resolved glycan species, and composite charts of summed intensities of diagnostic MS2 ions representing the distribution and relative abundance of each of the glycotopes and sialic acid variants were established. Moreover, switching to negative mode analysis of sample fractions enriched in negatively charged glycans, we show, for the first time, that a full range of sulfated glycotopes is expressed in adult zebrafish. In particular, 3-O-sulfation of terminal Gal was commonly found, whereas terminal sulfated HexNAc as in GalNAcβ1-4GlcNAc (LacdiNAc), and 3-O-sulfated hexuronic acid as in HNK-1 epitope (SO3-3GlcAβ1-3Galβ1-4GlcNAc) were identified only in the brain and not in the intestine or ovaries analyzed in parallel. Other characteristic structural features of sulfated O- and N-glycans along with their diagnostic ions detected in this discovery mode sulfoglycomic work collectively expand our adult zebrafish glycome atlas, which can now allow for a more complete navigation and probing of the underlying sulfotransferases and glycosyltransferases, in search of the functional relevance of zebrafish-specific glycotopes. Of particular importance is the knowledge of glycomic features distinct from those of humans when using adult zebrafish as an alternative vertebrate model, rather than mouse, for brain-related glyco-neurobiology studies.
Collapse
Affiliation(s)
- Huan-Chuan Tseng
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
| | - Cheng-Te Hsiao
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Nao Yamakawa
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, US 41-UMS 2014-PLBS, Lille, France
| | - Yann Guérardel
- Université de Lille, CNRS, UMR 8576-UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France.,Institute for Glyco-core Research (iGCORE), Gifu University, Gifu, Japan
| | - Kay-Hooi Khoo
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
| |
Collapse
|
7
|
Daher W, Leclercq LD, Viljoen A, Karam J, Dufrêne YF, Guérardel Y, Kremer L. O-Methylation of the Glycopeptidolipid Acyl Chain Defines Surface Hydrophobicity of Mycobacterium abscessus and Macrophage Invasion. ACS Infect Dis 2020; 6:2756-2770. [PMID: 32857488 DOI: 10.1021/acsinfecdis.0c00490] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mycobacterium abscessus, an emerging pathogen responsible for severe lung infections in cystic fibrosis patients, displays either smooth (S) or rough (R) morphotypes. The S-to-R transition is associated with reduced levels of glycopeptidolipid (GPL) production and is correlated with increased pathogenicity in animal and human hosts. While the structure of GPL is well established, its biosynthetic pathway is incomplete. In addition, the biological functions of the distinct structural parts of this complex lipid remain elusive. Herein, the fmt gene encoding a putative O-methyltransferase was deleted in the M. abscessus S variant. Subsequent biochemical and structural analyses demonstrated that methoxylation of the fatty acyl chain of GPL was abrogated in the Δfmt mutant, and this defect was rescued upon complementation with a functional fmt gene. In contrast, the introduction of fmt derivatives mutated at residues essential for methyltransferase activity failed to complement GPL defects, indicating that fmt encodes an O-methyltransferase. Unexpectedly, phenotypic analyses showed that Δfmt was more hydrophilic than its parental progenitor, as demonstrated by hexadecane-aqueous buffer partitioning and atomic force microscopy experiments with hydrophobic probes. Importantly, the invasion rate of THP-1 macrophages by Δfmt was reduced by 50% when compared to the wild-type strain. Together, these results indicate that Fmt O-methylates the lipid moiety of GPL and plays a substantial role in conditioning the surface hydrophobicity of M. abscessus as well as in the early steps of the interaction between the bacilli and macrophages.
Collapse
Affiliation(s)
- Wassim Daher
- Centre National de la Recherche Scientifique UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France
- INSERM, IRIM, 34293 Montpellier, France
| | - Louis-David Leclercq
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - Albertus Viljoen
- Centre National de la Recherche Scientifique UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France
- Louvain Institute of Biomolecular Science and Technology, Université Catholique de Louvain, Croix du Sud, 4-5, bte L7.07.07, B-1348 Louvain-la-Neuve, Belgium
| | - Jona Karam
- Centre National de la Recherche Scientifique UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France
| | - Yves F. Dufrêne
- Louvain Institute of Biomolecular Science and Technology, Université Catholique de Louvain, Croix du Sud, 4-5, bte L7.07.07, B-1348 Louvain-la-Neuve, Belgium
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - Laurent Kremer
- Centre National de la Recherche Scientifique UMR 9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, 1919 route de Mende, 34293 Montpellier, France
- INSERM, IRIM, 34293 Montpellier, France
| |
Collapse
|
8
|
Somrit M, Yu SY, Le Pendu J, Breiman A, Guérardel Y, Weerachatyanukul W, Watthammawut A. Macrobrachium rosenbergii nodavirus virus-like particles attach to fucosylated glycans in the gills of the giant freshwater prawn. Cell Microbiol 2020; 22:e13258. [PMID: 32862508 DOI: 10.1111/cmi.13258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/23/2020] [Revised: 08/06/2020] [Accepted: 08/25/2020] [Indexed: 02/04/2023]
Abstract
The Macrobrachium rosenbergii nodavirus (MrNV), the causative agent of white-tail disease (WTD) in many species of shrimp and prawn, has been shown to infect hemocytes and tissues such as the gills and muscles. However, little is known about the host surface molecules to which MrNV attach to initiate infection. Therefore, the present study investigated the role of glycans as binding molecules for virus attachment in susceptible tissues such as the gills. We established that MrNV in their virus-like particle (MrNV-VLP) form exhibited strong binding to gill tissues and lysates, which was highly reduced by the glycan-reducing periodate and PNGase F. The broad, fucose-binding Aleuria Aurantia lectin (AAL) highly reduced MrNV-VLPs binding to gill tissue sections and lysates, and efficiently disrupted the specific interactions between the VLPs and gill glycoproteins. Furthermore, mass spectroscopy revealed the existence of unique fucosylated LacdiNAc-extended N-linked and O-linked glycans in the gill tissues, whereas beta-elimination experiments showed that MrNV-VLPs demonstrated a binding preference for N-glycans. Therefore, the results from this study highly suggested that MrNV-VLPs preferentially attach to fucosylated N-glycans in the susceptible gill tissues, and these findings could lead to the development of strategies that target virus-host surface glycan interactions to reduce MrNV infections.
Collapse
Affiliation(s)
- Monsicha Somrit
- Department of Anatomy, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Shin-Yi Yu
- CNRS, UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Université de Lille, Lille, France
| | | | - Adrien Breiman
- Inserm, CRCINA, Université de Nantes, Nantes, France.,Centre Hospitalier Universitaire de Nantes, Nantes, France
| | - Yann Guérardel
- CNRS, UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Université de Lille, Lille, France
| | | | - Atthaboon Watthammawut
- Department of Anatomy, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
| |
Collapse
|
9
|
de Ruyck J, Dupont C, Lamy E, Le Moigne V, Biot C, Guérardel Y, Herrmann JL, Blaise M, Grassin-Delyle S, Kremer L, Dubar F. Structure-Based Design and Synthesis of Piperidinol-Containing Molecules as New Mycobacterium abscessus Inhibitors. ChemistryOpen 2020; 9:351-365. [PMID: 32211280 PMCID: PMC7083170 DOI: 10.1002/open.202000042] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Indexed: 02/06/2023] Open
Abstract
Non-tuberculous mycobacterium (NTM) infections, such as those caused by Mycobacterium abscessus, are increasing globally. Due to their intrinsic drug resistance, M. abscessus pulmonary infections are often difficult to cure using standard chemotherapy. We previously demonstrated that a piperidinol derivative, named PIPD1, is an efficient molecule both against M. abscessus and Mycobacterium tuberculosis, the agent of tuberculosis, by targeting the mycolic acid transporter MmpL3. These results prompted us to design and synthesize a series of piperidinol derivatives and to determine the biological activity against M. abscessus. Structure-activity relationship (SAR) studies pointed toward specific sites on the scaffold that can tolerate slight modifications. Overall, these results identified FMD-88 as a new promising active analogue against M. abscessus. Also, we determined the pharmacokinetics properties of PIPD1 and showed that intraperitoneal administration of this compound resulted in promising serum concentration and an elimination half-life of 3.2 hours.
Collapse
Affiliation(s)
- Jérôme de Ruyck
- Univ. Lille, CNRS UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle 59000 Lille France
| | - Christian Dupont
- IRIM Institut de Recherche en Infectiologie de Montpellier - UMR9004-CNRS/UM 1919 route de Mende 34293 Montpellier France
| | - Elodie Lamy
- Infection et inflammation - Laboratoire 2I UMD1173-INSERM/UVSQ Versailles 2 Avenue de la source de la Bièvres 78180 Montigny le Bretonneux France
| | - Vincent Le Moigne
- Infection et inflammation - Laboratoire 2I UMD1173-INSERM/UVSQ Versailles 2 Avenue de la source de la Bièvres 78180 Montigny le Bretonneux France
| | - Christophe Biot
- Univ. Lille, CNRS UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle 59000 Lille France
| | - Yann Guérardel
- Univ. Lille, CNRS UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle 59000 Lille France
| | - Jean-Louis Herrmann
- Infection et inflammation - Laboratoire 2I UMD1173-INSERM/UVSQ Versailles 2 Avenue de la source de la Bièvres 78180 Montigny le Bretonneux France
- Université Paris-Saclay, UVSQ, INSERM Infection et Inflammation (U1173) Montigny le Bretonneux France
| | - Mickaël Blaise
- IRIM Institut de Recherche en Infectiologie de Montpellier - UMR9004-CNRS/UM 1919 route de Mende 34293 Montpellier France
| | - Stanislas Grassin-Delyle
- Infection et inflammation - Laboratoire 2I UMD1173-INSERM/UVSQ Versailles 2 Avenue de la source de la Bièvres 78180 Montigny le Bretonneux France
- Hôpital Foch Département des maladies des voies respiratoires 92150 Suresnes France
| | - Laurent Kremer
- IRIM Institut de Recherche en Infectiologie de Montpellier - UMR9004-CNRS/UM 1919 route de Mende 34293 Montpellier France
- INSERM, Institut de Recherche en Infectiologie de Montpellier Montpellier France
| | - Faustine Dubar
- Univ. Lille, CNRS UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle 59000 Lille France
| |
Collapse
|
10
|
Shen L, Viljoen A, Villaume S, Joe M, Halloum I, Chêne L, Méry A, Fabre E, Takegawa K, Lowary TL, Vincent SP, Kremer L, Guérardel Y, Mariller C. The endogenous galactofuranosidase GlfH1 hydrolyzes mycobacterial arabinogalactan. J Biol Chem 2020; 295:5110-5123. [PMID: 32107309 DOI: 10.1074/jbc.ra119.011817] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 11/10/2019] [Revised: 02/11/2020] [Indexed: 12/14/2022] Open
Abstract
Despite impressive progress made over the past 20 years in our understanding of mycolylarabinogalactan-peptidoglycan (mAGP) biogenesis, the mechanisms by which the tubercle bacillus Mycobacterium tuberculosis adapts its cell wall structure and composition to various environmental conditions, especially during infection, remain poorly understood. Being the central portion of the mAGP complex, arabinogalactan (AG) is believed to be the constituent of the mycobacterial cell envelope that undergoes the least structural changes, but no reports exist supporting this assumption. Herein, using recombinantly expressed mycobacterial protein, bioinformatics analyses, and kinetic and biochemical assays, we demonstrate that the AG can be remodeled by a mycobacterial endogenous enzyme. In particular, we found that the mycobacterial GlfH1 (Rv3096) protein exhibits exo-β-d-galactofuranose hydrolase activity and is capable of hydrolyzing the galactan chain of AG by recurrent cleavage of the terminal β-(1,5) and β-(1,6)-Galf linkages. The characterization of this galactosidase represents a first step toward understanding the remodeling of mycobacterial AG.
Collapse
Affiliation(s)
- Lin Shen
- Univ. Lille, CNRS, UMR8576 - UGSF - Unit[c33c]zpi;● de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - Albertus Viljoen
- Institut de Recherche en Infectiologie de Montpellier (IRIM), UMR9004 - CNRS/UM, 1919 route de Mende, 34293 Montpellier cedex 5, France
| | - Sydney Villaume
- Laboratoire de Chimie Bio-Organic (CBO), Université de Namur, rue de Bruxelles 61, 5000 Namur, Belgium
| | - Maju Joe
- Alberta Glycomics Centre and Department of Chemistry, University of Alberta, Edmonton AB T6G 2G2, Canada
| | - Iman Halloum
- Institut de Recherche en Infectiologie de Montpellier (IRIM), UMR9004 - CNRS/UM, 1919 route de Mende, 34293 Montpellier cedex 5, France
| | - Loïc Chêne
- Laboratoire de Chimie Bio-Organic (CBO), Université de Namur, rue de Bruxelles 61, 5000 Namur, Belgium
| | - Alexandre Méry
- Univ. Lille, CNRS, UMR8576 - UGSF - Unit[c33c]zpi;● de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - Emeline Fabre
- Univ. Lille, CNRS, UMR8576 - UGSF - Unit[c33c]zpi;● de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - Kaoru Takegawa
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Todd L Lowary
- Alberta Glycomics Centre and Department of Chemistry, University of Alberta, Edmonton AB T6G 2G2, Canada
| | - Stéphane P Vincent
- Laboratoire de Chimie Bio-Organic (CBO), Université de Namur, rue de Bruxelles 61, 5000 Namur, Belgium
| | - Laurent Kremer
- Institut de Recherche en Infectiologie de Montpellier (IRIM), UMR9004 - CNRS/UM, 1919 route de Mende, 34293 Montpellier cedex 5, France.,INSERM, Institut de Recherche en Infectiologie de Montpellier, 34293 Montpellier, France
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR8576 - UGSF - Unit[c33c]zpi;● de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - Christophe Mariller
- Univ. Lille, CNRS, UMR8576 - UGSF - Unit[c33c]zpi;● de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| |
Collapse
|
11
|
Cavdarli S, Yamakawa N, Clarisse C, Aoki K, Brysbaert G, Le Doussal JM, Delannoy P, Guérardel Y, Groux-Degroote S. Profiling of O-acetylated Gangliosides Expressed in Neuroectoderm Derived Cells. Int J Mol Sci 2020; 21:ijms21010370. [PMID: 31935967 PMCID: PMC6981417 DOI: 10.3390/ijms21010370] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/31/2019] [Accepted: 12/31/2019] [Indexed: 12/15/2022] Open
Abstract
The expression and biological functions of oncofetal markers GD2 and GD3 were extensively studied in neuroectoderm-derived cancers in order to characterize their potential as therapeutic targets. Using immunological approaches, we previously identified GD3, GD2, and OAcGD2 expression in breast cancer (BC) cell lines. However, antibodies specific for O-acetylated gangliosides are not exempt of limitations, as they only provide information on the expression of a limited set of O-acetylated ganglioside species. Consequently, the aim of the present study was to use structural approaches in order to apprehend ganglioside diversity in melanoma, neuroblastoma, and breast cancer cells, focusing on O-acetylated species that are usually lost under alkaline conditions and require specific analytical procedures. We used purification and extraction methods that preserve the O-acetyl modification for the analysis of native gangliosides by MALDI-TOF. We identified the expression of GM1, GM2, GM3, GD2, GD3, GT2, and GT3 in SK-Mel28 (melanoma), LAN-1 (neuroblastoma), Hs 578T, SUM 159PT, MDA-MB-231, MCF-7 (BC), and BC cell lines over-expressing GD3 synthase. Among O-acetylated gangliosides, we characterized the expression of OAcGM1, OAcGD3, OAcGD2, OAcGT2, and OAcGT3. Furthermore, the experimental procedure allowed us to clearly identify the position of the sialic acid residue that carries the O-acetyl group on b- and c-series gangliosides by MS/MS fragmentation. These results show that ganglioside O-acetylation occurs on both inner and terminal sialic acid residue in a cell type-dependent manner, suggesting different O-acetylation pathways for gangliosides. They also highlight the limitation of immuno-detection for the complete identification of O-acetylated ganglioside profiles in cancer cells.
Collapse
Affiliation(s)
- Sumeyye Cavdarli
- Univ. Lille, CNRS, UMR 8576–UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France; (S.C.); (N.Y.); (C.C.); (G.B.); (P.D.); (Y.G.)
- OGD2 Pharma, Institut de Recherche en Santé de l’Université de Nantes, 44007 Nantes, France;
| | - Nao Yamakawa
- Univ. Lille, CNRS, UMR 8576–UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France; (S.C.); (N.Y.); (C.C.); (G.B.); (P.D.); (Y.G.)
| | - Charlotte Clarisse
- Univ. Lille, CNRS, UMR 8576–UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France; (S.C.); (N.Y.); (C.C.); (G.B.); (P.D.); (Y.G.)
| | - Kazuhiro Aoki
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA;
| | - Guillaume Brysbaert
- Univ. Lille, CNRS, UMR 8576–UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France; (S.C.); (N.Y.); (C.C.); (G.B.); (P.D.); (Y.G.)
| | - Jean-Marc Le Doussal
- OGD2 Pharma, Institut de Recherche en Santé de l’Université de Nantes, 44007 Nantes, France;
| | - Philippe Delannoy
- Univ. Lille, CNRS, UMR 8576–UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France; (S.C.); (N.Y.); (C.C.); (G.B.); (P.D.); (Y.G.)
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR 8576–UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France; (S.C.); (N.Y.); (C.C.); (G.B.); (P.D.); (Y.G.)
| | - Sophie Groux-Degroote
- Univ. Lille, CNRS, UMR 8576–UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France; (S.C.); (N.Y.); (C.C.); (G.B.); (P.D.); (Y.G.)
- Correspondence:
| |
Collapse
|
12
|
Vergé C, Bouchatal A, Chirat F, Guérardel Y, Maftah A, Petit JM. Involvement of ST6Gal I-mediated α2,6 sialylation in myoblast proliferation and differentiation. FEBS Open Bio 2019; 10:56-69. [PMID: 31622539 PMCID: PMC6943236 DOI: 10.1002/2211-5463.12745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/24/2019] [Accepted: 10/16/2019] [Indexed: 12/20/2022] Open
Abstract
Myogenesis is a physiological process which involves the proliferation of myoblasts and their differentiation into multinucleated myotubes, which constitute the future muscle fibers. Commitment of myoblasts to differentiation is regulated by the balance between the myogenic factors Pax7 and MyoD. The formation of myotubes requires the presence of glycans, especially N‐glycans, on the cell surface. We examined here the involvement of α2,6 sialylation during murine myoblastic C2C12 cell differentiation by generating a st6gal1‐knockdown C2C12 cell line; these cells exhibit reduced proliferative potential and precocious differentiation due to the low expression of Pax7. The earlier fusion of st6gal1‐knockdown cells leads to a high fusion index and a drop in reserve cells (Pax7+/MyoD−). In st6gal1‐knockdown cells, the Notch pathway is inactivated; consequently, Pax7 expression is virtually abolished, leading to impairment of the proliferation rate. All these results indicate that the decrease in α2,6 sialylation of N‐glycans favors the differentiation of most cells and provokes a significant loss of reserve cells.
Collapse
Affiliation(s)
- Caroline Vergé
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Amel Bouchatal
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Frédéric Chirat
- UGSF, UMR 8576, CNRS, University of Lille, Villeneuve d'Ascq, France
| | - Yann Guérardel
- UGSF, UMR 8576, CNRS, University of Lille, Villeneuve d'Ascq, France
| | - Abderrahman Maftah
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Jean-Michel Petit
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| |
Collapse
|
13
|
Dupont C, Chen Y, Xu Z, Roquet-Banères F, Blaise M, Witt AK, Dubar F, Biot C, Guérardel Y, Maurer FP, Chng SS, Kremer L. A piperidinol-containing molecule is active against Mycobacterium tuberculosis by inhibiting the mycolic acid flippase activity of MmpL3. J Biol Chem 2019; 294:17512-17523. [PMID: 31562241 DOI: 10.1074/jbc.ra119.010135] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [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: 07/10/2019] [Revised: 09/25/2019] [Indexed: 12/19/2022] Open
Abstract
Mycobacterium tuberculosis, the causative agent of tuberculosis, remains a major human pathogen, and current treatment options to combat this disease are under threat because of the emergence of multidrug-resistant and extensively drug-resistant tuberculosis. High-throughput whole-cell screening of an extensive compound library has recently identified a piperidinol-containing molecule, PIPD1, as a potent lead compound against M. tuberculosis Herein, we show that PIPD1 and related analogs exert in vitro bactericidal activity against the M. tuberculosis strain mc26230 and also against a panel of multidrug-resistant and extensively drug-resistant clinical isolates of M. tuberculosis, suggesting that PIPD1's mode of action differs from those of most first- and second-line anti-tubercular drugs. Selection and DNA sequencing of PIPD1-resistant mycobacterial mutants revealed the presence of single-nucleotide polymorphisms in mmpL3, encoding an inner membrane-associated mycolic acid flippase in M. tuberculosis Results from functional assays with spheroplasts derived from a M. smegmatis strain lacking the endogenous mmpL3 gene but harboring the M. tuberculosis mmpL3 homolog indicated that PIPD1 inhibits the MmpL3-driven translocation of trehalose monomycolate across the inner membrane without altering the proton motive force. Using a predictive structural model of MmpL3 from M. tuberculosis, docking studies revealed a PIPD1-binding cavity recently found to accommodate different inhibitors in M. smegmatis MmpL3. In conclusion, our findings have uncovered bactericidal activity of a new chemical scaffold. Its anti-tubercular activity is mediated by direct inhibition of the flippase activity of MmpL3 rather than by inhibition of the inner membrane proton motive force, significantly advancing our understanding of MmpL3-targeted inhibition in mycobacteria.
Collapse
Affiliation(s)
- Christian Dupont
- Centre National de la Recherche Scientifique UMR9004, Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, 34293 Montpellier, France
| | - Yushu Chen
- Department of Chemistry, National University of Singapore, Singapore 117543
| | - Zhujun Xu
- Department of Chemistry, National University of Singapore, Singapore 117543
| | - Françoise Roquet-Banères
- Centre National de la Recherche Scientifique UMR9004, Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, 34293 Montpellier, France
| | - Mickaël Blaise
- Centre National de la Recherche Scientifique UMR9004, Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, 34293 Montpellier, France
| | - Anne-Kathrin Witt
- National Reference Center for Mycobacteria, Research Center Borstel-Leibniz Lung Center, D-23845 Borstel, Germany
| | - Faustine Dubar
- University of Lille, CNRS, UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France
| | - Christophe Biot
- University of Lille, CNRS, UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France
| | - Yann Guérardel
- University of Lille, CNRS, UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France
| | - Florian P Maurer
- National Reference Center for Mycobacteria, Research Center Borstel-Leibniz Lung Center, D-23845 Borstel, Germany
| | - Shu-Sin Chng
- Department of Chemistry, National University of Singapore, Singapore 117543
| | - Laurent Kremer
- Centre National de la Recherche Scientifique UMR9004, Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, 34293 Montpellier, France .,INSERM, Institut de Recherche en Infectiologie de Montpellier, 34293 Montpellier, France
| |
Collapse
|
14
|
Maes E, Sadovskaya I, Lévêque M, Elass-Rochard E, Payré B, Grard T, Théodorou V, Guérardel Y, Mercier-Bonin M. Structure and biological activities of a hexosamine-rich cell wall polysaccharide isolated from the probiotic Lactobacillus farciminis. Glycoconj J 2019; 36:39-55. [PMID: 30637506 DOI: 10.1007/s10719-018-09854-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 12/13/2018] [Accepted: 12/18/2018] [Indexed: 12/11/2022]
Abstract
Lactobacillus farciminis CIP 103136 is a bacterial strain with recognized probiotic properties. However, the mechanisms underlying such properties have only been partially elucidated. In this study, we isolated and purified a cell-wall associated polysaccharide (CWPS), and evaluated its biological role in vitro. The structure of CWPS and responses from stimulation of (i) human macrophage-like THP-1 cells, (ii) human embryonal kidney (HEK293) cells stably transfected with Toll-like receptors (TLR2 or TLR4) and (iii) human colonocyte-like T84 intestinal epithelial cells, upon exposure to CWPS were studied. The structure of the purified CWPS from L. farciminis CIP 103136 was analyzed by nuclear magnetic resonance (NMR), MALDI-TOF-TOF MS, and methylation analyses in its native form and following Smith degradation. It was shown to be a novel branched polysaccharide, composed of linear backbone of trisaccharide repeating units of: [→6αGlcpNAc1 → 4βManpNAc1 → 4βGlcpNAc1→] highly substituted with single residues of αGlcp, αGalp and αGlcpNAc. Subsequently, the lack of pro- or anti-inflammatory properties of CWPS was established on macrophage-like THP-1 cells. In addition, CWPS failed to modulate cell signaling pathways dependent of TLR2 and TLR4 in transfected HEK-cells. Finally, in T84 cells, CWPS neither influenced intestinal barrier integrity under basal conditions nor prevented TNF-α/IFN-γ cytokine-mediated epithelium impairment.
Collapse
Affiliation(s)
- Emmanuel Maes
- CNRS UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ Lille, 59 000, Lille, France
| | - Irina Sadovskaya
- Equipe Biochimie des Produits Aquatiques BPA, Institut Régional Charles Violette EA 7394, USC Anses-ULCO, Université du Littoral-Côte d'Opale, Bassin Napoléon, 62327, Boulogne-sur-mer cedex, France
| | - Mathilde Lévêque
- Toxalim (Research Centre in Food Toxicology), INRA, ENVT, INP-Purpan, UPS, Université de Toulouse, Toulouse, France
| | - Elisabeth Elass-Rochard
- CNRS UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ Lille, 59 000, Lille, France
| | - Bruno Payré
- Faculté de Médecine Rangueil, Centre de Microscopie Electronique Appliquée à la Biologie (CMEAB), Toulouse Cedex, France
| | - Thierry Grard
- Equipe Biochimie des Produits Aquatiques BPA, Institut Régional Charles Violette EA 7394, USC Anses-ULCO, Université du Littoral-Côte d'Opale, Bassin Napoléon, 62327, Boulogne-sur-mer cedex, France
| | - Vassilia Théodorou
- Toxalim (Research Centre in Food Toxicology), INRA, ENVT, INP-Purpan, UPS, Université de Toulouse, Toulouse, France
| | - Yann Guérardel
- CNRS UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ Lille, 59 000, Lille, France
| | - Muriel Mercier-Bonin
- Toxalim (Research Centre in Food Toxicology), INRA, ENVT, INP-Purpan, UPS, Université de Toulouse, Toulouse, France.
| |
Collapse
|
15
|
Abstract
Cell wall polysaccharides (CWPS), which are usually covalently bound to the peptidoglycan and are closely associated with the cell wall, are considered as ubiquitous components of the cell envelope of gram-positive bacteria and play an important role as mediators of bacterial interactions with the environment. Here, we describe a simple method for purifying CWPS by extraction of bacterial cells with consecutive acid treatments. Purified CWPS are obtained by gel-filtration chromatography following treatment with HF. We also provide the methodology to easily assess the integrity of CWPS using high-resolution magic-angle spinning (HR-MAS) NMR.
Collapse
Affiliation(s)
- Irina Sadovskaya
- Équipe BPA, Univ. Littoral Côte d'Opale, convention ANSES, EA 7394, ICV Charles Violette, Univ. Lille, Univ. Artois, INRA, ISA F-62321, Boulogne-sur-mer, France
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France.
| |
Collapse
|
16
|
Dubois V, Viljoen A, Laencina L, Le Moigne V, Bernut A, Dubar F, Blaise M, Gaillard JL, Guérardel Y, Kremer L, Herrmann JL, Girard-Misguich F. MmpL8 MAB controls Mycobacterium abscessus virulence and production of a previously unknown glycolipid family. Proc Natl Acad Sci U S A 2018; 115:E10147-E10156. [PMID: 30301802 PMCID: PMC6205491 DOI: 10.1073/pnas.1812984115] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Mycobacterium abscessus is a peculiar rapid-growing Mycobacterium (RGM) capable of surviving within eukaryotic cells thanks to an arsenal of virulence genes also found in slow-growing mycobacteria (SGM), such as Mycobacterium tuberculosis A screen based on the intracellular survival in amoebae and macrophages (MΦ) of an M. abscessus transposon mutant library revealed the important role of MAB_0855, a yet uncharacterized Mycobacterial membrane protein Large (MmpL). Large-scale comparisons with SGM and RGM genomes uncovered MmpL12 proteins as putative orthologs of MAB_0855 and a locus-scale synteny between the MAB_0855 and Mycobacterium chelonae mmpL8 loci. A KO mutant of the MAB_0855 gene, designated herein as mmpL8MAB , had impaired adhesion to MΦ and displayed a decreased intracellular viability. Despite retaining the ability to block phagosomal acidification, like the WT strain, the mmpL8MAB mutant was delayed in damaging the phagosomal membrane and in making contact with the cytosol. Virulence attenuation of the mutant was confirmed in vivo by impaired zebrafish killing and a diminished propensity to induce granuloma formation. The previously shown role of MmpL in lipid transport prompted us to investigate the potential lipid substrates of MmpL8MAB Systematic lipid analysis revealed that MmpL8MAB was required for the proper expression of a glycolipid entity, a glycosyl diacylated nonadecyl diol (GDND) alcohol comprising different combinations of oleic and stearic acids. This study shows the importance of MmpL8MAB in modifying interactions between the bacteria and phagocytic cells and in the production of a previously unknown glycolipid family.
Collapse
Affiliation(s)
- Violaine Dubois
- Université de Versailles Saint Quentin en Yvelines, INSERM UMR1173, 78000 Versailles, France
| | - Albertus Viljoen
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, 34293 Montpellier, France
| | - Laura Laencina
- Université de Versailles Saint Quentin en Yvelines, INSERM UMR1173, 78000 Versailles, France
| | - Vincent Le Moigne
- Université de Versailles Saint Quentin en Yvelines, INSERM UMR1173, 78000 Versailles, France
| | - Audrey Bernut
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, 34293 Montpellier, France
| | - Faustine Dubar
- Université de Lille, CNRS UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France
| | - Mickaël Blaise
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, 34293 Montpellier, France
| | - Jean-Louis Gaillard
- Université de Versailles Saint Quentin en Yvelines, INSERM UMR1173, 78000 Versailles, France
- Assistance Publique-Hôpitaux de Paris, Groupement Hospitalier Universitaire Paris Ile de France Ouest, Hôpital Raymond Poincaré, Hôpital Ambroise Paré, 92380 Garches, Boulogne Billancourt, France
| | - Yann Guérardel
- Université de Lille, CNRS UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France
| | - Laurent Kremer
- CNRS UMR 9004, Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, 34293 Montpellier, France
- INSERM, Institut de Recherche en Infectiologie de Montpellier, 34293 Montpellier, France
| | - Jean-Louis Herrmann
- Université de Versailles Saint Quentin en Yvelines, INSERM UMR1173, 78000 Versailles, France;
- Assistance Publique-Hôpitaux de Paris, Groupement Hospitalier Universitaire Paris Ile de France Ouest, Hôpital Raymond Poincaré, Hôpital Ambroise Paré, 92380 Garches, Boulogne Billancourt, France
| | | |
Collapse
|
17
|
Noel M, Gilormini PA, Cogez V, Lion C, Biot C, Harduin-Lepers A, Guérardel Y. MicroPlate Sialyltransferase Assay: A Rapid and Sensitive Assay Based on an Unnatural Sialic Acid Donor and Bioorthogonal Chemistry. Bioconjug Chem 2018; 29:3377-3384. [PMID: 30192128 DOI: 10.1021/acs.bioconjchem.8b00529] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mammalian sialyltransferases transfer sialic acids onto glycoproteins and glycolipids within the Golgi apparatus. Despite their key role in glycosylation, the study of their enzymatic activities is limited by the lack of appropriate tools. Herein, we developed a quick and sensitive sialyltransferase microplate assay based on the use of the unnatural CMP-SiaNAl donor substrate. In this assay, an appropriate acceptor glycoprotein is coated on the bottom of 96-well plate and the sialyltransferase activity is assessed using CMP-SiaNAl. The alkyne tag of SiaNAl enables subsequent covalent ligation of an azido-biotin probe via CuAAC and an antibiotin-HRP conjugated antibody is then used to quantify the amount of transferred SiaNAl by a colorimetric titration. With this test, we evaluated the kinetic characteristics and substrate preferences of two human sialyltransferases, ST6Gal I and ST3Gal I toward a panel of asialoglycoprotein acceptors, and identified cations that display a sialyltransferase inhibitory effect.
Collapse
Affiliation(s)
- Maxence Noel
- Universite Lille , CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille , France
| | - Pierre-André Gilormini
- Universite Lille , CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille , France
| | - Virginie Cogez
- Universite Lille , CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille , France
| | - Cédric Lion
- Universite Lille , CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille , France
| | - Christophe Biot
- Universite Lille , CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille , France
| | - Anne Harduin-Lepers
- Universite Lille , CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille , France
| | - Yann Guérardel
- Universite Lille , CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille , France
| |
Collapse
|
18
|
Gilormini PA, Lion C, Vicogne D, Guérardel Y, Foulquier F, Biot C. Chemical glycomics enrichment: imaging the recycling of sialic acid in living cells. J Inherit Metab Dis 2018; 41:515-523. [PMID: 29294191 PMCID: PMC5959963 DOI: 10.1007/s10545-017-0118-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/28/2017] [Accepted: 11/20/2017] [Indexed: 01/10/2023]
Abstract
The development of metabolic oligosaccharide engineering (MOE) over the past two decades enabled the bioimaging studies of glycosylation processes in physio-pathological contexts. Herein, we successfully applied the chemical reporter strategy to image the fate of sialylated glycoconjugates in healthy and sialin-deficient patient fibroblasts. This chemical glycomics enrichment is a powerful tool for tracking sialylated glycoconjugates and probing lysosomal recycling capacities. Thus, such strategies appear fundamental for the characterization of lysosomal storage diseases.
Collapse
Affiliation(s)
- Pierre André Gilormini
- University Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - Cédric Lion
- University Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - Dorothée Vicogne
- University Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - Yann Guérardel
- University Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - François Foulquier
- University Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France.
| | - Christophe Biot
- University Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France.
| |
Collapse
|
19
|
Sulzenbacher G, Roig-Zamboni V, Lebrun R, Guérardel Y, Murat D, Mansuelle P, Yamakawa N, Qian XX, Vincentelli R, Bourne Y, Wu LF, Alberto F. Glycosylate and move! The glycosyltransferase Maf is involved in bacterial flagella formation. Environ Microbiol 2017; 20:228-240. [DOI: 10.1111/1462-2920.13975] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/17/2017] [Accepted: 10/22/2017] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Régine Lebrun
- Plate-forme Protéomique; Institut de Microbiologie de la Méditerranée, FR3479 Aix-Marseille Université and Centre National de la Recherche Scientifique; Marseille 13402 France
| | - Yann Guérardel
- Unité de Glycobiologie Structurale et Fonctionnelle; UMR 8576 Université de Lille and Centre National de la Recherche Scientifique; Lille 59000 France
| | - Dorothée Murat
- Aix Marseille Univ, CNRS, LCB UMR7283; Marseille 13402 France
- International Associated Laboratory of Evolution and Development of Magnetotactic Organisms (LIA-MagMC); Centre National de la Recherche Scientifique; Marseille 13402 France
| | - Pascal Mansuelle
- Plate-forme Protéomique; Institut de Microbiologie de la Méditerranée, FR3479 Aix-Marseille Université and Centre National de la Recherche Scientifique; Marseille 13402 France
| | - Nao Yamakawa
- Unité de Glycobiologie Structurale et Fonctionnelle; UMR 8576 Université de Lille and Centre National de la Recherche Scientifique; Lille 59000 France
| | - Xin-Xin Qian
- Aix Marseille Univ, CNRS, LCB UMR7283; Marseille 13402 France
- International Associated Laboratory of Evolution and Development of Magnetotactic Organisms (LIA-MagMC); Centre National de la Recherche Scientifique; Marseille 13402 France
| | | | - Yves Bourne
- Aix Marseille Univ, CNRS, AFMB UMR7257; Marseille 13288 France
| | - Long-Fei Wu
- Aix Marseille Univ, CNRS, LCB UMR7283; Marseille 13402 France
- International Associated Laboratory of Evolution and Development of Magnetotactic Organisms (LIA-MagMC); Centre National de la Recherche Scientifique; Marseille 13402 France
| | - François Alberto
- Aix Marseille Univ, CNRS, LCB UMR7283; Marseille 13402 France
- International Associated Laboratory of Evolution and Development of Magnetotactic Organisms (LIA-MagMC); Centre National de la Recherche Scientifique; Marseille 13402 France
| |
Collapse
|
20
|
Simon C, Lion C, Huss B, Blervacq AS, Spriet C, Guérardel Y, Biot C, Hawkins S. BLISS: Shining a light on lignification in plants. Plant Signal Behav 2017; 12:e1359366. [PMID: 28786751 PMCID: PMC5616161 DOI: 10.1080/15592324.2017.1359366] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 07/20/2017] [Indexed: 06/07/2023]
Abstract
Lignin is a polyphenolic polymer of the plant cell wall formed by the oxidative polymerization of 3 main monomers called monolignols that give rise to the lignin H-, G- and S-units. Together with cellulose and hemicelluloses, lignin is a major component of plant biomass that is widely exploited by humans in numerous industrial processes. Despite recent advances in our understanding of monolignol biosynthesis, our current understanding of the spatio-temporal regulation of their transport and polymerization is more limited. In a recent publication, we have reported the development of an original Bioorthogonal Labeling Imaging Sequential Strategy (BLISS) that allows us to visualize the simultaneous incorporation dynamics of H and G monolignol reporters into lignifying cell walls of the flax stem. 11 Here, we extend the application of this strategy to other plant organs such as roots and rapidly discuss some of the contributions and perspectives of this new technique for improving our understanding of the lignification process in plants.
Collapse
Affiliation(s)
- Clémence Simon
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille,France
| | - Cedric Lion
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille,France
| | - Brigitte Huss
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille,France
| | - Anne-Sophie Blervacq
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille,France
| | - Corentin Spriet
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille,France
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille,France
| | - Christophe Biot
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille,France
| | - Simon Hawkins
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille,France
| |
Collapse
|
21
|
Noel M, Gilormini P, Cogez V, Yamakawa N, Vicogne D, Lion C, Biot C, Guérardel Y, Harduin‐Lepers A. Probing the CMP-Sialic Acid Donor Specificity of Two Human β-d-Galactoside Sialyltransferases (ST3Gal I and ST6Gal I) Selectively Acting on O- and N-Glycosylproteins. Chembiochem 2017; 18:1251-1259. [PMID: 28395125 PMCID: PMC5499661 DOI: 10.1002/cbic.201700024] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Indexed: 12/29/2022]
Abstract
Sialylation of glycoproteins and glycolipids is catalyzed by sialyltransferases in the Golgi of mammalian cells, whereby sialic acid residues are added at the nonreducing ends of oligosaccharides. Because sialylated glycans play critical roles in a number of human physio-pathological processes, the past two decades have witnessed the development of modified sialic acid derivatives for a better understanding of sialic acid biology and for the development of new therapeutic targets. However, nothing is known about how individual mammalian sialyltransferases tolerate and behave towards these unnatural CMP-sialic acid donors. In this study, we devised several approaches to investigate the donor specificity of the human β-d-galactoside sialyltransferases ST6Gal I and ST3Gal I by using two CMP-sialic acids: CMP-Neu5Ac, and CMP-Neu5N-(4pentynoyl)neuraminic acid (CMP-SiaNAl), an unnatural CMP-sialic acid donor with an extended and functionalized N-acyl moiety.
Collapse
Affiliation(s)
- Maxence Noel
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| | - Pierre‐André Gilormini
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| | - Virginie Cogez
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| | - Nao Yamakawa
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| | - Dorothée Vicogne
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| | - Cédric Lion
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| | - Christophe Biot
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| | - Yann Guérardel
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| | - Anne Harduin‐Lepers
- Université de LilleCNRSUMR 8576UGSFUnité de Glycobiologie Structurale et Fonctionnelle59000LilleFrance
| |
Collapse
|
22
|
Abstract
Gangliosides are acidic glycosphingolipids containing one or more sialic acid residues. They are essential compounds at the outer leaflet of the plasma membrane, where they interact with phospholipids, cholesterol, and transmembrane proteins, forming lipid rafts. They are involved in cell adhesion, proliferation, and recognition processes, as well as in the modulation of signal transduction pathways. These functions are mainly governed by the glycan moiety, and changes in the structures of gangliosides occur under pathological conditions, particularly in neuro-ectoderm-derived cancers. With the progress in mass spectrometry analysis of gangliosides, their role in cancer progression can be now investigated in more detail. In this review we summarize the current knowledge on the biosynthesis of gangliosides and their role in cancers, together with the recent development of cancer immunotherapy targeting gangliosides.
Collapse
Affiliation(s)
- Sophie Groux-Degroote
- Université de Lille, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, 59000, Lille, France
| | - Yann Guérardel
- Université de Lille, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, 59000, Lille, France
| | - Philippe Delannoy
- Université de Lille, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, 59000, Lille, France
| |
Collapse
|
23
|
Gilormini PA, Lion C, Noel M, Krzewinski-Recchi MA, Harduin-Lepers A, Guérardel Y, Biot C. Improved workflow for the efficient preparation of ready to use CMP-activated sialic acids. Glycobiology 2016; 26:1151-1156. [PMID: 27543325 DOI: 10.1093/glycob/cww084] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 08/12/2016] [Accepted: 08/13/2016] [Indexed: 11/13/2022] Open
Abstract
Natural and synthetically modified cytidine monophosphate activated sialic acids (CMP-Sias) are essential research assets in the field of glycobiology: among other applications, they can be used to probe glycans, detect sialylation defects at the cell surface or carry out detailed studies of sialyltransferase activities. However, these chemical tools are notoriously unstable because of hydrolytic decomposition, and are very time-consuming and costly to obtain. They are nigh impossible to store with satisfactory purity, and their preparation requires multiple laborious purification steps that usually lead to heavy product loss. Using in situ time-resolved 31P phosphorus nuclear magnetic resonance (31P NMR), we precisely established the kinetics of formation and degradation of a number of CMP-Sias including CMP-Neu5Ac, CMP-Neu5Gc, CMP-SiaNAl and CMP-SiaNAz in several experimental conditions. 31P NMR can be carried out in undeuterated solvents and is a sensitive and nondestructive technique that allows for direct in situ monitoring and optimization of chemo-enzymatic syntheses that involve phosphorus-containing species. Thus, we showed that CMP-sialic acid derivatives can be robustly obtained in high yields using the readily available Neisseria meningitidis CMP-sialic acid synthase. This integrated workflow takes less than an hour, and the freshly prepared CMP-Sias can be directly transferred to sialylation biological assays without any purification step.
Collapse
Affiliation(s)
- Pierre-André Gilormini
- Université Lille 1, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Bât. C9, Cité Scientifique, F-59000 Lille, France
| | - Cédric Lion
- Université Lille 1, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Bât. C9, Cité Scientifique, F-59000 Lille, France
| | - Maxence Noel
- Université Lille 1, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Bât. C9, Cité Scientifique, F-59000 Lille, France
| | - Marie-Ange Krzewinski-Recchi
- Université Lille 1, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Bât. C9, Cité Scientifique, F-59000 Lille, France
| | - Anne Harduin-Lepers
- Université Lille 1, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Bât. C9, Cité Scientifique, F-59000 Lille, France
| | - Yann Guérardel
- Université Lille 1, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Bât. C9, Cité Scientifique, F-59000 Lille, France
| | - Christophe Biot
- Université Lille 1, CNRS, UMR 8576, UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Bât. C9, Cité Scientifique, F-59000 Lille, France
| |
Collapse
|
24
|
Delannoy CP, Rombouts Y, Groux-Degroote S, Holst S, Coddeville B, Harduin-Lepers A, Wuhrer M, Elass-Rochard E, Guérardel Y. Glycosylation Changes Triggered by the Differentiation of Monocytic THP-1 Cell Line into Macrophages. J Proteome Res 2016; 16:156-169. [DOI: 10.1021/acs.jproteome.6b00161] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Clément P. Delannoy
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Yoann Rombouts
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Sophie Groux-Degroote
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Stephanie Holst
- Center
for Proteomics and Metabolomics, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Bernadette Coddeville
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Anne Harduin-Lepers
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Manfred Wuhrer
- Center
for Proteomics and Metabolomics, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Elisabeth Elass-Rochard
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| |
Collapse
|
25
|
Dupont C, Viljoen A, Dubar F, Blaise M, Bernut A, Pawlik A, Bouchier C, Brosch R, Guérardel Y, Lelièvre J, Ballell L, Herrmann JL, Biot C, Kremer L. A new piperidinol derivative targeting mycolic acid transport inMycobacterium abscessus. Mol Microbiol 2016; 101:515-29. [DOI: 10.1111/mmi.13406] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2016] [Indexed: 01/24/2023]
Affiliation(s)
- Christian Dupont
- Centre National de la Recherche Scientifique FRE 3689, Centre d’études d'agents Pathogènes et Biotechnologies pour la Santé, Université de Montpellier; 1919 route de Mende Montpellier 34293 France
- UMR1173, INSERM, Université de Versailles St Quentin; 2 avenue de la Source de la Bièvre 78180 Montigny le Bretonneux France
| | - Albertus Viljoen
- Centre National de la Recherche Scientifique FRE 3689, Centre d’études d'agents Pathogènes et Biotechnologies pour la Santé, Université de Montpellier; 1919 route de Mende Montpellier 34293 France
| | - Faustine Dubar
- Université Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle; Lille F 59000 France
| | - Mickaël Blaise
- Centre National de la Recherche Scientifique FRE 3689, Centre d’études d'agents Pathogènes et Biotechnologies pour la Santé, Université de Montpellier; 1919 route de Mende Montpellier 34293 France
| | - Audrey Bernut
- Centre National de la Recherche Scientifique FRE 3689, Centre d’études d'agents Pathogènes et Biotechnologies pour la Santé, Université de Montpellier; 1919 route de Mende Montpellier 34293 France
| | - Alexandre Pawlik
- Institut Pasteur, Unité de Pathogénomique Mycobactérienne Intégrée; 25 rue du Dr. Roux Paris 75724 France
| | | | - Roland Brosch
- Institut Pasteur, Unité de Pathogénomique Mycobactérienne Intégrée; 25 rue du Dr. Roux Paris 75724 France
| | - Yann Guérardel
- Université Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle; Lille F 59000 France
| | - Joël Lelièvre
- Diseases of the Developing World, GlaxoSmithKline Tres Cantos; Madrid 28760 Spain
| | - Lluis Ballell
- Diseases of the Developing World, GlaxoSmithKline Tres Cantos; Madrid 28760 Spain
| | - Jean-Louis Herrmann
- UMR1173, INSERM, Université de Versailles St Quentin; 2 avenue de la Source de la Bièvre 78180 Montigny le Bretonneux France
| | - Christophe Biot
- Université Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle; Lille F 59000 France
| | - Laurent Kremer
- Centre National de la Recherche Scientifique FRE 3689, Centre d’études d'agents Pathogènes et Biotechnologies pour la Santé, Université de Montpellier; 1919 route de Mende Montpellier 34293 France
- INSERM, CPBS; Montpellier 34293 France
| |
Collapse
|
26
|
Cattiaux L, Mée A, Pourcelot M, Sfihi-Loualia G, Hurtaux T, Maes E, Fradin C, Sendid B, Poulain D, Fabre E, Delplace F, Guérardel Y, Mallet JM. Candida albicans β-1,2 mannosyl transferase Bmt3: Preparation and evaluation of a β (1,2), α (1,2)-tetramannosyl fluorescent substrate. Bioorg Med Chem 2016; 24:1362-8. [PMID: 26895658 DOI: 10.1016/j.bmc.2016.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 02/03/2016] [Accepted: 02/05/2016] [Indexed: 11/18/2022]
Abstract
We describe for the first time the chemical synthesis of a tetramannoside, containing both α (1→2) and β (1→2) linkages. Dodecylthio (lauryl) glycosides were prepared from odorless dodecyl thiol and used as donors for the glycosylation steps. This tetramannoside, was coupled to a mantyl group, and revealed to be a perfect substrate of β-mannosyltransferase Bmt3, confirming the proposed specificity and allowing the preparation of a pentamannoside sequence (β Man (1,2) β Man (1,2) α Man (1,2) α Man (1,2) α Man) usable as a novel substrate for further elongation studies.
Collapse
Affiliation(s)
- Laurent Cattiaux
- École Normale Supérieure-PSL Research University, Département de Chimie, 24, rue Lhomond, 75005 Paris, France; Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005 Paris, France; CNRS, UMR 7203 LBM, F-75005 Paris, France
| | - Anaïs Mée
- École Normale Supérieure-PSL Research University, Département de Chimie, 24, rue Lhomond, 75005 Paris, France; Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005 Paris, France; CNRS, UMR 7203 LBM, F-75005 Paris, France
| | - Marilyne Pourcelot
- École Normale Supérieure-PSL Research University, Département de Chimie, 24, rue Lhomond, 75005 Paris, France; Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005 Paris, France; CNRS, UMR 7203 LBM, F-75005 Paris, France
| | - Ghenima Sfihi-Loualia
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Thomas Hurtaux
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France; Univ. Lille, Inserm, CHU Lille, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France
| | - Emmanuel Maes
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Chantal Fradin
- Univ. Lille, Inserm, CHU Lille, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France
| | - Boualem Sendid
- Univ. Lille, Inserm, CHU Lille, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France
| | - Daniel Poulain
- Univ. Lille, Inserm, CHU Lille, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France
| | - Emeline Fabre
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Florence Delplace
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Jean-Maurice Mallet
- École Normale Supérieure-PSL Research University, Département de Chimie, 24, rue Lhomond, 75005 Paris, France; Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005 Paris, France; CNRS, UMR 7203 LBM, F-75005 Paris, France.
| |
Collapse
|
27
|
Hurtaux T, Sfihi-Loualia G, Brissonnet Y, Bouckaert J, Mallet JM, Sendid B, Delplace F, Fabre E, Gouin SG, Guérardel Y. Evaluation of monovalent and multivalent iminosugars to modulate Candida albicans β-1,2-mannosyltransferase activities. Carbohydr Res 2016; 429:123-7. [PMID: 26852253 DOI: 10.1016/j.carres.2016.01.004] [Citation(s) in RCA: 6] [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: 11/18/2015] [Revised: 01/15/2016] [Accepted: 01/16/2016] [Indexed: 11/30/2022]
Abstract
β-1,2-Linked oligomannosides substitute the cell wall of numerous yeast species. Several of those including Candida albicans may cause severe infections associated with high rates of morbidity and mortality, especially in immunocompromised patients. β-1,2-Mannosides are known to be involved in the pathogenic process and to elicit an immune response from the host. In C. albicans, the synthesis of β-mannosides is under the control of a family of nine genes coding for putative β-mannosyltransferases. Two of them, CaBmt1 and CaBmt3, have been shown to initiate and prime the elongation of the β-mannosides on the cell-wall mannan core. In the present study, we have assessed the modulating activities of monovalent and multivalent iminosugar analogs on these enzymes in order to control the enzymatic bio-synthesis of β-mannosides. We have identified a monovalent deoxynojirimycin (DNJ) derivative that inhibits the CaBmt1-catalyzed initiating activity, and mono-, tetra- and polyvalent deoxymannojirimycin (DMJ) that modulate the CaBmt1 activity toward the formation of a single major product. Analysis of the aggregating properties of the multivalent iminosugars showed their ability to elicit clusterization of both CaBmt1 and CaBmt3, without affecting their activity. These results suggest promising roles for multivalent iminosugars as controlling agents for the biosynthesis of β-1,2 mannosides and for monovalent DNJ derivative as a first target for the design of future β-mannosyltransferase inhibitors.
Collapse
Affiliation(s)
- Thomas Hurtaux
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France; CHU Lille, U995-LIRIC-Lille Inflammation Research International Center, Inserm, F-59000 Lille, France
| | - Ghenima Sfihi-Loualia
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France
| | - Yoan Brissonnet
- CEISAM, Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation, LUNAM Université, UMR CNRS 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Julie Bouckaert
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France
| | - Jean-Maurice Mallet
- Département de Chimie, Sorbonne Universités-UPMC Univ Paris 06, École Normale Supérieure-PSL Research University, CNRS UMR 7203 LBM, 24, rue Lhomond, 75005 Paris, France
| | - Boualem Sendid
- CHU Lille, U995-LIRIC-Lille Inflammation Research International Center, Inserm, F-59000 Lille, France
| | - Florence Delplace
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France
| | - Emeline Fabre
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France
| | - Sébastien G Gouin
- CEISAM, Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation, LUNAM Université, UMR CNRS 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Yann Guérardel
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France.
| |
Collapse
|
28
|
Gilormini PA, Lion C, Vicogne D, Levade T, Potelle S, Mariller C, Guérardel Y, Biot C, Foulquier F. A sequential bioorthogonal dual strategy: ManNAl and SiaNAl as distinct tools to unravel sialic acid metabolic pathways. Chem Commun (Camb) 2016; 52:2318-21. [DOI: 10.1039/c5cc08838k] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new sequential orthogonal dual strategy to unravel the intracellular trafficking and cellular uptake mechanism of sialic acid.
Collapse
Affiliation(s)
- P. A. Gilormini
- Univ. Lille
- UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle
- F-59000 Lille
- France
- CNRS
| | - C. Lion
- Univ. Lille
- UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle
- F-59000 Lille
- France
- CNRS
| | - D. Vicogne
- Univ. Lille
- UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle
- F-59000 Lille
- France
- CNRS
| | - T. Levade
- Laboratoire de Biochimie Métabolique
- IFB
- CHU Purpan
- INSERM UMR 1037
- CRCT
| | - S. Potelle
- Univ. Lille
- UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle
- F-59000 Lille
- France
- CNRS
| | - C. Mariller
- Univ. Lille
- UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle
- F-59000 Lille
- France
- CNRS
| | - Y. Guérardel
- Univ. Lille
- UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle
- F-59000 Lille
- France
- CNRS
| | - C. Biot
- Univ. Lille
- UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle
- F-59000 Lille
- France
- CNRS
| | - F. Foulquier
- Univ. Lille
- UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle
- F-59000 Lille
- France
- CNRS
| |
Collapse
|
29
|
Sfihi-Loualia G, Hurtaux T, Fabre E, Fradin C, Mée A, Pourcelot M, Maes E, Bouckaert J, Mallet JM, Poulain D, Delplace F, Guérardel Y. Candida albicans β-1,2-mannosyltransferase Bmt3 prompts the elongation of the cell-wall phosphopeptidomannan. Glycobiology 2015; 26:203-14. [PMID: 26525402 DOI: 10.1093/glycob/cwv094] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 04/27/2015] [Accepted: 10/26/2015] [Indexed: 01/06/2023] Open
Abstract
β-1,2-Linked mannosides are expressed on numerous cell-wall glycoconjugates of the opportunistic pathogen yeast Candida albicans. Several studies evidenced their implication in the host-pathogen interaction and virulence mechanisms. In the present study, we characterized the in vitro activity of CaBmt3, a β-1,2-mannosyltransferase involved in the elongation of β-1,2-oligomannosides oligomers onto the cell-wall polymannosylated N-glycans. A recombinant soluble enzyme Bmt3p was produced in Pichia pastoris and its enzyme activity was investigated using natural and synthetic oligomannosides as potential acceptor substrates. Bmt3p was shown to exhibit an exquisite enzymatic specificity by adding a single terminal β-mannosyl residue to α-1,2-linked oligomannosides capped by a Manβ1-2Man motif. Furthermore, we demonstrated that the previously identified CaBmt1 and CaBmt3 efficiently act together to generate Manβ1-2Manβ1-2[Manα1-2]n sequence from α-1,2-linked oligomannosides onto exogenous and endogenous substrates.
Collapse
Affiliation(s)
- Ghenima Sfihi-Loualia
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Thomas Hurtaux
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Emeline Fabre
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Chantal Fradin
- Univ. Lille, Inserm, CHU Lille, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France
| | - Anaïs Mée
- École Normale Supérieure-PSL Research University, Département de Chimie, Sorbonne Universités - UPMC Univ Paris 06, CNRS UMR 7203 LBM, 24, rue Lhomond, 75005 Paris, France
| | - Marilyne Pourcelot
- École Normale Supérieure-PSL Research University, Département de Chimie, Sorbonne Universités - UPMC Univ Paris 06, CNRS UMR 7203 LBM, 24, rue Lhomond, 75005 Paris, France
| | - Emmanuel Maes
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Julie Bouckaert
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Jean-Maurice Mallet
- École Normale Supérieure-PSL Research University, Département de Chimie, Sorbonne Universités - UPMC Univ Paris 06, CNRS UMR 7203 LBM, 24, rue Lhomond, 75005 Paris, France
| | - Daniel Poulain
- Univ. Lille, Inserm, CHU Lille, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France
| | - Florence Delplace
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| |
Collapse
|
30
|
Groux-Degroote S, Guérardel Y, Julien S, Delannoy P. Gangliosides in breast cancer: New perspectives. Biochemistry Moscow 2015; 80:808-19. [DOI: 10.1134/s0006297915070020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
31
|
Carrère-Kremer S, Blaise M, Singh VK, Alibaud L, Tuaillon E, Halloum I, van de Weerd R, Guérardel Y, Drancourt M, Takiff H, Geurtsen J, Kremer L. A new dehydratase conferring innate resistance to thiacetazone and intra-amoebal survival of Mycobacterium smegmatis. Mol Microbiol 2015; 96:1085-102. [PMID: 25754266 DOI: 10.1111/mmi.12992] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2015] [Indexed: 12/12/2022]
Abstract
Nontuberculous mycobacteria are innately resistant to most antibiotics, although the mechanisms responsible for their drug resistance remain poorly understood. They are particularly refractory to thiacetazone (TAC), a second-line antitubercular drug. Herein, we identified MSMEG_6754 as essential for the innate resistance of Mycobacterium smegmatis to TAC. Transposon-mediated and targeted disruption of MSMEG_6754 resulted in hypersusceptibility to TAC. Conversely, introduction of MSMEG_6754 into Mycobacterium tuberculosis increased resistance 100-fold. Resolution of the crystal structure of MSMEG_6754 revealed a homodimer in which each monomer comprises two hot-dog domains characteristic of dehydratase-like proteins and very similar to the HadAB complex involved in mycolic acid biosynthesis. Gene inactivation of the essential hadB dehydratase could be achieved in M. smegmatis and M. tuberculosis only when the strains carried an integrated copy of MSMEG_6754, supporting the idea that MSMEG_6754 and HadB share redundant dehydratase activity. Using M. smegmatis-Acanthamoeba co-cultures, we found that intra-amoebal growth of the MSMEG_6754 deleted strain was significantly reduced compared with the parental strain. This in vivo growth defect was fully restored upon complementation with catalytically active MSMEG_6754 or HadABC, indicating that MSMEG_6754 plays a critical role in the survival of M. smegmatis within the environmental host.
Collapse
Affiliation(s)
- Séverine Carrère-Kremer
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, CNRS UMR 5235, Université de Montpellier, case 107, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France.,INSERM U1058, Université de Montpellier and Department of Bacteriology-Virology, CHU de Montpellier, Montpellier, 34095, France
| | - Mickael Blaise
- CARB Centre, Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10c, DK-8000 Aarhus C, Denmark
| | - Vipul K Singh
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, CNRS UMR 5235, Université de Montpellier, case 107, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
| | - Laeticia Alibaud
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, CNRS UMR 5235, Université de Montpellier, case 107, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
| | - Edouard Tuaillon
- INSERM U1058, Université de Montpellier and Department of Bacteriology-Virology, CHU de Montpellier, Montpellier, 34095, France
| | - Iman Halloum
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, CNRS UMR 5235, Université de Montpellier, case 107, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
| | - Robert van de Weerd
- Department of Medical Microbiology and Infection Control, VU University Medical Center, Amsterdam, 1081 BT, The Netherlands
| | - Yann Guérardel
- Unité de Glycobiologie Structurale et Fonctionnelle, CNRS UMR 8576, IFR 147, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq cedex, France
| | - Michel Drancourt
- URMITE, UMR63, CNRS 7278, IRD 198, INSERM 1095, Université Aix-Marseille, Marseille, France
| | - Howard Takiff
- Laboratorio de Genética Molecular, CMBC, IVIC, Caracas, 1020A, Venezuela
| | - Jeroen Geurtsen
- Department of Medical Microbiology and Infection Control, VU University Medical Center, Amsterdam, 1081 BT, The Netherlands
| | - Laurent Kremer
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, CNRS UMR 5235, Université de Montpellier, case 107, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France.,INSERM, DIMNP, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
| |
Collapse
|
32
|
Vilchèze C, Molle V, Carrère-Kremer S, Leiba J, Mourey L, Shenai S, Baronian G, Tufariello J, Hartman T, Veyron-Churlet R, Trivelli X, Tiwari S, Weinrick B, Alland D, Guérardel Y, Jacobs WR, Kremer L. Phosphorylation of KasB regulates virulence and acid-fastness in Mycobacterium tuberculosis. PLoS Pathog 2014; 10:e1004115. [PMID: 24809459 PMCID: PMC4014462 DOI: 10.1371/journal.ppat.1004115] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 03/28/2014] [Indexed: 11/18/2022] Open
Abstract
Mycobacterium tuberculosis bacilli display two signature features: acid-fast staining and the capacity to induce long-term latent infections in humans. However, the mechanisms governing these two important processes remain largely unknown. Ser/Thr phosphorylation has recently emerged as an important regulatory mechanism allowing mycobacteria to adapt their cell wall structure/composition in response to their environment. Herein, we evaluated whether phosphorylation of KasB, a crucial mycolic acid biosynthetic enzyme, could modulate acid-fast staining and virulence. Tandem mass spectrometry and site-directed mutagenesis revealed that phosphorylation of KasB occurred at Thr334 and Thr336 both in vitro and in mycobacteria. Isogenic strains of M. tuberculosis with either a deletion of the kasB gene or a kasB_T334D/T336D allele, mimicking constitutive phosphorylation of KasB, were constructed by specialized linkage transduction. Biochemical and structural analyses comparing these mutants to the parental strain revealed that both mutant strains had mycolic acids that were shortened by 4–6 carbon atoms and lacked trans-cyclopropanation. Together, these results suggested that in M. tuberculosis, phosphorylation profoundly decreases the condensing activity of KasB. Structural/modeling analyses reveal that Thr334 and Thr336 are located in the vicinity of the catalytic triad, which indicates that phosphorylation of these amino acids would result in loss of enzyme activity. Importantly, the kasB_T334D/T336D phosphomimetic and deletion alleles, in contrast to the kasB_T334A/T336A phosphoablative allele, completely lost acid-fast staining. Moreover, assessing the virulence of these strains indicated that the KasB phosphomimetic mutant was attenuated in both immunodeficient and immunocompetent mice following aerosol infection. This attenuation was characterized by the absence of lung pathology. Overall, these results highlight for the first time the role of Ser/Thr kinase-dependent KasB phosphorylation in regulating the later stages of mycolic acid elongation, with important consequences in terms of acid-fast staining and pathogenicity. Acid-fast staining has been used since 1882 as the hallmark diagnostic test for detecting Mycobacterium tuberculosis, the causative agent of tuberculosis. It has been attributed to the presence of a waxy cell envelope, and primarily to its key components, mycolic acids. Here, we report a new mechanism of regulation in which phosphorylation of KasB, involved in the completion of full-length mycolic acids, leads to shortened mycolic acids and loss of acid-fast staining. Moreover, a M. tuberculosis mutant strain mimicking constitutive phosphorylation of KasB is severely attenuated for growth in both immunocompetent and immunosuppressed mice and fails to cause mortality and pathophysiological symptoms. These results emphasize the critical role of kinase-dependent phosphorylation in the pathogenesis of M. tuberculosis by controlling the mycolic acid chain length. Our study demonstrates the importance of a regulatory mechanism governing acid-fastness and virulence of M. tuberculosis.
Collapse
Affiliation(s)
- Catherine Vilchèze
- Howard Hughes Medical Institute, Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York, New York, United States of America
| | - Virginie Molle
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, Universités de Montpellier II et I, CNRS; UMR 5235, Montpellier, France
| | - Séverine Carrère-Kremer
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, Universités de Montpellier II et I, CNRS; UMR 5235, Montpellier, France
| | - Jade Leiba
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, Universités de Montpellier II et I, CNRS; UMR 5235, Montpellier, France
| | - Lionel Mourey
- Institut de Pharmacologie et de Biologie Structurale, CNRS, Toulouse, France; The Université de Toulouse, Université Paul Sabatier, IPBS, Toulouse, France
| | - Shubhada Shenai
- Division of Infectious Diseases, Department of Medicine, and the Ruy V. Lourenco Center for the Study of Emerging and Reemerging Pathogens, New Jersey Medical School, Rutgers Biomedical and Health Sciences, Newark, New Jersey, United States of America
| | - Grégory Baronian
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, Universités de Montpellier II et I, CNRS; UMR 5235, Montpellier, France
| | - Joann Tufariello
- Howard Hughes Medical Institute, Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York, New York, United States of America
| | - Travis Hartman
- Howard Hughes Medical Institute, Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York, New York, United States of America
| | - Romain Veyron-Churlet
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, Universités de Montpellier II et I, CNRS; UMR 5235, Montpellier, France
| | - Xavier Trivelli
- Université Lille 1, Unité de Glycobiologie Structurale et Fonctionnelle, UGSF, Villeneuve d'Ascq, France; CNRS, UMR 8576, Villeneuve d'Ascq, France
| | - Sangeeta Tiwari
- Howard Hughes Medical Institute, Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York, New York, United States of America
| | - Brian Weinrick
- Howard Hughes Medical Institute, Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York, New York, United States of America
| | - David Alland
- Division of Infectious Diseases, Department of Medicine, and the Ruy V. Lourenco Center for the Study of Emerging and Reemerging Pathogens, New Jersey Medical School, Rutgers Biomedical and Health Sciences, Newark, New Jersey, United States of America
| | - Yann Guérardel
- Université Lille 1, Unité de Glycobiologie Structurale et Fonctionnelle, UGSF, Villeneuve d'Ascq, France; CNRS, UMR 8576, Villeneuve d'Ascq, France
| | - William R Jacobs
- Howard Hughes Medical Institute, Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York, New York, United States of America
| | - Laurent Kremer
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, Universités de Montpellier II et I, CNRS; UMR 5235, Montpellier, France; INSERM, DIMNP, Montpellier, France
| |
Collapse
|
33
|
Raj R, Biot C, Carrère-Kremer S, Kremer L, Guérardel Y, Gut J, Rosenthal PJ, Forge D, Kumar V. 7-Chloroquinoline-isatin Conjugates: Antimalarial, Antitubercular, and Cytotoxic Evaluation. Chem Biol Drug Des 2014; 83:622-9. [DOI: 10.1111/cbdd.12273] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 11/28/2013] [Accepted: 12/09/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Raghu Raj
- Department of Chemistry; Guru Nanak Dev University; Amritsar Punjab 143005 India
| | - Christophe Biot
- Unité de Glycobiologie Structurale et Fonctionnelle; Université Lille 1; F-59650 Villeneuve d'Ascq France
- CNRS; UMR 8576; Villeneuve d'Ascq F-59650 France
| | - Séverine Carrère-Kremer
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques; UMR 5235 CNRS; Université Montpellier 2; Place Eugène Bataillon 34095 Montpellier Cedex 05 France
| | - Laurent Kremer
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques; UMR 5235 CNRS; Université Montpellier 2; Place Eugène Bataillon 34095 Montpellier Cedex 05 France
- INSERM; DIMNP; Place Eugène Bataillon 34095 Montpellier Cedex 05 France
| | - Yann Guérardel
- Unité de Glycobiologie Structurale et Fonctionnelle; Université Lille 1; F-59650 Villeneuve d'Ascq France
- CNRS; UMR 8576; Villeneuve d'Ascq F-59650 France
| | - Jiri Gut
- Department of Medicine; University of California; San Francisco CA 94143 USA
| | - Philip J. Rosenthal
- Department of Medicine; University of California; San Francisco CA 94143 USA
| | - Delphine Forge
- Laboratory of Organic Chemistry; Faculty of Sciences; University of Mons-UMONS; 20 place du parc B-7000 Mons Belgium
| | - Vipan Kumar
- Department of Chemistry; Guru Nanak Dev University; Amritsar Punjab 143005 India
| |
Collapse
|
34
|
Le DTL, Tran TL, Duviau MP, Meyrand M, Guérardel Y, Castelain M, Loubière P, Chapot-Chartier MP, Dague E, Mercier-Bonin M. Unraveling the role of surface mucus-binding protein and pili in muco-adhesion of Lactococcus lactis. PLoS One 2013; 8:e79850. [PMID: 24260308 PMCID: PMC3832589 DOI: 10.1371/journal.pone.0079850] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 09/25/2013] [Indexed: 11/19/2022] Open
Abstract
Adhesion of bacteria to mucus may favor their persistence within the gut and their beneficial effects to the host. Interactions between pig gastric mucin (PGM) and a natural isolate of Lactococcus lactis (TIL448) were measured at the single-cell scale and under static conditions, using atomic force microscopy (AFM). In parallel, these interactions were monitored at the bacterial population level and under shear flow. AFM experiments with a L. lactis cell-probe and a PGM-coated surface revealed a high proportion of specific adhesive events (60%) and a low level of non-adhesive ones (2%). The strain muco-adhesive properties were confirmed by the weak detachment of bacteria from the PGM-coated surface under shear flow. In AFM, rupture events were detected at short (100−200 nm) and long distances (up to 600−800 nm). AFM measurements on pili and mucus-binding protein defective mutants demonstrated the comparable role played by these two surface proteinaceous components in adhesion to PGM under static conditions. Under shear flow, a more important contribution of the mucus-binding protein than the pili one was observed. Both methods differ by the way of probing the adhesion force, i.e. negative force contact vs. sedimentation and normal-to-substratum retraction vs. tangential detachment conditions, using AFM and flow chamber, respectively. AFM blocking assays with free PGM or O-glycan fractions purified from PGM demonstrated that neutral oligosaccharides played a major role in adhesion of L. lactis TIL448 to PGM. This study dissects L. lactis muco-adhesive phenotype, in relation with the nature of the bacterial surface determinants.
Collapse
Affiliation(s)
- Doan Thanh Lam Le
- Université de Toulouse; INSA,UPS, INP; LISBP, Toulouse, France
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France
- CNRS, UMR5504, Toulouse, France
- CNRS, LAAS, Toulouse, France
- CNRS, ITAV-UMS3039, Toulouse, France
- Université de Toulouse, LAAS, Toulouse, France
| | - Thi-Ly Tran
- Université de Toulouse; INSA,UPS, INP; LISBP, Toulouse, France
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France
- CNRS, UMR5504, Toulouse, France
| | - Marie-Pierre Duviau
- Université de Toulouse; INSA,UPS, INP; LISBP, Toulouse, France
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France
- CNRS, UMR5504, Toulouse, France
| | - Mickael Meyrand
- INRA, UMR1319 Micalis, Jouy-en-Josas, France
- AgroParisTech, UMR Micalis, Jouy-en-Josas, France
| | - Yann Guérardel
- Université de Lille1, Unité de Glycobiologie Structurale et Fonctionnelle, UGSF, Villeneuve d'Ascq, France
- CNRS, UMR 8576, Villeneuve d'Ascq, France
| | - Mickaël Castelain
- Université de Toulouse; INSA,UPS, INP; LISBP, Toulouse, France
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France
- CNRS, UMR5504, Toulouse, France
| | - Pascal Loubière
- Université de Toulouse; INSA,UPS, INP; LISBP, Toulouse, France
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France
- CNRS, UMR5504, Toulouse, France
| | | | - Etienne Dague
- CNRS, LAAS, Toulouse, France
- CNRS, ITAV-UMS3039, Toulouse, France
- Université de Toulouse, LAAS, Toulouse, France
- * E-mail: (MMB); (ED)
| | - Muriel Mercier-Bonin
- Université de Toulouse; INSA,UPS, INP; LISBP, Toulouse, France
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France
- CNRS, UMR5504, Toulouse, France
- * E-mail: (MMB); (ED)
| |
Collapse
|
35
|
Alibaud L, Pawelczyk J, Gannoun-Zaki L, Singh VK, Rombouts Y, Drancourt M, Dziadek J, Guérardel Y, Kremer L. Increased phagocytosis of Mycobacterium marinum mutants defective in lipooligosaccharide production: a structure-activity relationship study. J Biol Chem 2013; 289:215-28. [PMID: 24235141 DOI: 10.1074/jbc.m113.525550] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Mycobacterium marinum is a waterborne pathogen responsible for tuberculosis-like infections in ectotherms and is an occasional opportunistic human pathogen. In the environment, M. marinum also interacts with amoebae, which may serve as a natural reservoir for this microorganism. However, the description of mycobacterial determinants in the early interaction with macrophages or amoebae remains elusive. Lipooligosaccharides (LOSs) are cell surface-exposed glycolipids capable of modulating the host immune system, suggesting that they may be involved in the early interactions of M. marinum with macrophages. Herein, we addressed whether LOS composition affects the uptake of M. marinum by professional phagocytes. Mutants with various truncated LOS variants were generated, leading to the identification of several previously uncharacterized biosynthetic genes (wbbL2, MMAR_2321, and MMAR_2331). Biochemical and structural approaches allowed resolving the structures of LOS precursors accumulating in this set of mutants. These strains with structurally defined LOS profiles were then used to infect both macrophages and Acanthamoebae. An inverse correlation between LOS completeness and uptake of mycobacteria by phagocytes was found, allowing the proposal of three mutant classes: class I (papA4), devoid of LOS and highly efficiently phagocytosed; class II, accumulating only early LOS intermediates (wbbL2 and MMAR_2331) and efficiently phagocytosed but less than class I mutants; class III, lacking LOS-IV (losA, MMAR_2319, and MMAR_2321) and phagocytosed similarly to the control strain. These results indicate that phagocytosis is conditioned by the LOS pattern and that the LOS pathway used by M. marinum in macrophages is conserved during infection of amoebae.
Collapse
Affiliation(s)
- Laeticia Alibaud
- From the Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques, Université de Montpellier 2 et 1, CNRS, UMR 5235, case 107, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Kumar K, Biot C, Carrère-Kremer S, Kremer L, Guérardel Y, Roussel P, Kumar V. Base-Promoted Expedient Access to Spiroisatins: Synthesis and Antitubercular Evaluation of 1H-1,2,3-Triazole-Tethered Spiroisatin–Ferrocene and Isatin–Ferrocene Conjugates. Organometallics 2013. [DOI: 10.1021/om4009229] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Kewal Kumar
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Christophe Biot
- Unité de Glycobiologie Structurale et
Fonctionnelle, Université Lille 1, F-59650 Villeneuve
d’Ascq, France
- CNRS, UMR 8576, F-59650 Villeneuve d’Ascq, France
| | - Séverine Carrère-Kremer
- Laboratoire de Dynamique des Interactions Membranaires
Normales et Pathologiques, UMR 5235 CNRS, Université Montpellier 2I, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
| | - Laurent Kremer
- Laboratoire de Dynamique des Interactions Membranaires
Normales et Pathologiques, UMR 5235 CNRS, Université Montpellier 2I, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
- DIMNP, INSERM, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
| | - Yann Guérardel
- Unité de Glycobiologie Structurale et
Fonctionnelle, Université Lille 1, F-59650 Villeneuve
d’Ascq, France
- CNRS, UMR 8576, F-59650 Villeneuve d’Ascq, France
| | - Pascal Roussel
- UMR CNRS 8181, Unitéde
Catalyse et de Chimie du
Solide (UCCS), ENSCL, University Lille Nord de France, F-59000 Lille, France
| | - Vipan Kumar
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| |
Collapse
|
37
|
Raj R, Biot C, Carrère-Kremer S, Kremer L, Guérardel Y, Gut J, Rosenthal PJ, Kumar V. 4-Aminoquinoline-β-Lactam Conjugates: Synthesis, Antimalarial, and Antitubercular Evaluation. Chem Biol Drug Des 2013; 83:191-7. [DOI: 10.1111/cbdd.12225] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 08/22/2013] [Indexed: 01/08/2023]
Affiliation(s)
- Raghu Raj
- Department of Chemistry; Guru Nanak Dev University; Amritsar 143005 India
| | - Christophe Biot
- Unité de Glycobiologie Structurale et Fonctionnelle; Université Lille 1; F-59650 Villeneuve d'Ascq France
- CNRS; UMR 8576; F-59650 Villeneuve d'Ascq France
| | - Séverine Carrère-Kremer
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques; UMR 5235 CNRS; Université Montpellier 2; Place Eugène Bataillon 34095 Montpellier Cedex 05 France
| | - Laurent Kremer
- Laboratoire de Dynamique des Interactions Membranaires Normales et Pathologiques; UMR 5235 CNRS; Université Montpellier 2; Place Eugène Bataillon 34095 Montpellier Cedex 05 France
- INSERM; DIMNP; Place Eugène Bataillon 34095 Montpellier Cedex 05 France
| | - Yann Guérardel
- Unité de Glycobiologie Structurale et Fonctionnelle; Université Lille 1; F-59650 Villeneuve d'Ascq France
- CNRS; UMR 8576; F-59650 Villeneuve d'Ascq France
| | - Jiri Gut
- Department of Medicine; University of California; San Francisco CA 94143 USA
| | - Philip J. Rosenthal
- Department of Medicine; University of California; San Francisco CA 94143 USA
| | - Vipan Kumar
- Department of Chemistry; Guru Nanak Dev University; Amritsar 143005 India
| |
Collapse
|
38
|
Vausselin T, Calland N, Belouzard S, Descamps V, Douam F, Helle F, François C, Lavillette D, Duverlie G, Wahid A, Fénéant L, Cocquerel L, Guérardel Y, Wychowski C, Biot C, Dubuisson J. The antimalarial ferroquine is an inhibitor of hepatitis C virus. Hepatology 2013; 58:86-97. [PMID: 23348596 PMCID: PMC7165689 DOI: 10.1002/hep.26273] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 11/20/2012] [Indexed: 12/15/2022]
Abstract
UNLABELLED Hepatitis C virus (HCV) is a major cause of chronic liver disease. Despite recent success in improving anti-HCV therapy, additional progress is still needed to develop cheaper and interferon (IFN)-free treatments. Here, we report that ferroquine (FQ), an antimalarial ferrocenic analog of chloroquine, is a novel inhibitor of HCV. FQ potently inhibited HCV infection of hepatoma cell lines by affecting an early step of the viral life cycle. The antiviral activity of FQ on HCV entry was confirmed with pseudoparticles expressing HCV envelope glycoproteins E1 and E2 from six different genotypes. In addition to its effect on HCV entry, FQ also inhibited HCV RNA replication, albeit at a higher concentration. We also showed that FQ has no effect on viral assembly and virion secretion. Using a binding assay at 4°C, we showed that FQ does not prevent attachment of the virus to the cell surface. Furthermore, virus internalization was not affected by FQ, whereas the fusion process was impaired in the presence of FQ as shown in a cell-cell fusion assay. Finally, virus with resistance to FQ was selected by sequential passage in the presence of the drug, and resistance was shown to be conferred by a single mutation in E1 glycoprotein (S327A). By inhibiting cell-free virus transmission using a neutralizing antibody, we also showed that FQ inhibits HCV cell-to-cell spread between neighboring cells. Combinations of FQ with IFN, or an inhibitor of HCV NS3/4A protease, also resulted in additive to synergistic activity. CONCLUSION FQ is a novel, interesting anti-HCV molecule that could be used in combination with other direct-acting antivirals.
Collapse
Affiliation(s)
- Thibaut Vausselin
- Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France; CNRS UMR8204, Lille, France; INSERM U1019, Lille, France; and Université Lille Nord de France, Lille, France
| | - Noémie Calland
- Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France; CNRS UMR8204, Lille, France; INSERM U1019, Lille, France; and Université Lille Nord de France, Lille, France
| | - Sandrine Belouzard
- Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France; CNRS UMR8204, Lille, France; INSERM U1019, Lille, France; and Université Lille Nord de France, Lille, France
| | - Véronique Descamps
- Laboratoire de Virologie EA4294, Centre Hospitalier Universitaire d'Amiens, Université de Picardie Jules Verne, Amiens, France
| | - Florian Douam
- INSERM, U758, Human Virology Laboratory, Lyon, France,Ecole Normale Supérieure de Lyon, Lyon, France,Université de Lyon, UCB‐Lyon1, Lyon, France
| | - François Helle
- Laboratoire de Virologie EA4294, Centre Hospitalier Universitaire d'Amiens, Université de Picardie Jules Verne, Amiens, France
| | - Catherine François
- Laboratoire de Virologie EA4294, Centre Hospitalier Universitaire d'Amiens, Université de Picardie Jules Verne, Amiens, France
| | - Dimitri Lavillette
- INSERM, U758, Human Virology Laboratory, Lyon, France,Ecole Normale Supérieure de Lyon, Lyon, France,Université de Lyon, UCB‐Lyon1, Lyon, France
| | - Gilles Duverlie
- Laboratoire de Virologie EA4294, Centre Hospitalier Universitaire d'Amiens, Université de Picardie Jules Verne, Amiens, France
| | - Ahmed Wahid
- Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France; CNRS UMR8204, Lille, France; INSERM U1019, Lille, France; and Université Lille Nord de France, Lille, France,Department of Biochemistry, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Lucie Fénéant
- Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France; CNRS UMR8204, Lille, France; INSERM U1019, Lille, France; and Université Lille Nord de France, Lille, France
| | - Laurence Cocquerel
- Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France; CNRS UMR8204, Lille, France; INSERM U1019, Lille, France; and Université Lille Nord de France, Lille, France
| | - Yann Guérardel
- Université Lille Nord de France, Université Lille1, CNRS UMR8576, Villeneuve d'Ascq, France
| | - Czeslaw Wychowski
- Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France; CNRS UMR8204, Lille, France; INSERM U1019, Lille, France; and Université Lille Nord de France, Lille, France
| | - Christophe Biot
- Université Lille Nord de France, Université Lille1, CNRS UMR8576, Villeneuve d'Ascq, France
| | - Jean Dubuisson
- Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France; CNRS UMR8204, Lille, France; INSERM U1019, Lille, France; and Université Lille Nord de France, Lille, France
| |
Collapse
|
39
|
Brument S, Sivignon A, Dumych TI, Moreau N, Roos G, Guérardel Y, Chalopin T, Deniaud D, Bilyy RO, Darfeuille-Michaud A, Bouckaert J, Gouin SG. Thiazolylaminomannosides As Potent Antiadhesives of Type 1 Piliated Escherichia coli Isolated from Crohn’s Disease Patients. J Med Chem 2013; 56:5395-406. [DOI: 10.1021/jm400723n] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sami Brument
- LUNAM Université, CEISAM, Chimie
Et Interdisciplinarité, Synthèse,
Analyse, Modélisation, UMR CNRS 6230, UFR des Sciences et des
Techniques, 2 rue de la Houssinière, BP 92208, 44322 NANTES
Cedex 3, France
| | - Adeline Sivignon
- Clermont Université, UMR 1071 Inserm/Université
d’Auvergne, 63000 Clermont-Ferrand,
France
- INRA, Unité Sous Contrat 2018, 63000 Clermont-Ferrand, France
| | - Tetiana I. Dumych
- Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv,
Ukraine
| | - Nicolas Moreau
- LUNAM Université, CEISAM, Chimie
Et Interdisciplinarité, Synthèse,
Analyse, Modélisation, UMR CNRS 6230, UFR des Sciences et des
Techniques, 2 rue de la Houssinière, BP 92208, 44322 NANTES
Cedex 3, France
| | - Goedele Roos
- Algemene Chemie (ALGC), Vrije Universiteit Brussel, Brussels, Belgium
| | - Yann Guérardel
- Unité de Glycobiologie
Structurale et Fonctionnelle (UGSF), UMR8576 du CNRS, Université Lille 1, F-59655 Villeneuve d’Ascq
Cedex, France
| | - Thibaut Chalopin
- LUNAM Université, CEISAM, Chimie
Et Interdisciplinarité, Synthèse,
Analyse, Modélisation, UMR CNRS 6230, UFR des Sciences et des
Techniques, 2 rue de la Houssinière, BP 92208, 44322 NANTES
Cedex 3, France
| | - David Deniaud
- LUNAM Université, CEISAM, Chimie
Et Interdisciplinarité, Synthèse,
Analyse, Modélisation, UMR CNRS 6230, UFR des Sciences et des
Techniques, 2 rue de la Houssinière, BP 92208, 44322 NANTES
Cedex 3, France
| | - Rostyslav O. Bilyy
- Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv,
Ukraine
| | - Arlette Darfeuille-Michaud
- Clermont Université, UMR 1071 Inserm/Université
d’Auvergne, 63000 Clermont-Ferrand,
France
- INRA, Unité Sous Contrat 2018, 63000 Clermont-Ferrand, France
- Centre Hospitalier Universitaire, 63000 Clermont-Ferrand, France
| | - Julie Bouckaert
- Unité de Glycobiologie
Structurale et Fonctionnelle (UGSF), UMR8576 du CNRS, Université Lille 1, F-59655 Villeneuve d’Ascq
Cedex, France
| | - Sébastien G. Gouin
- LUNAM Université, CEISAM, Chimie
Et Interdisciplinarité, Synthèse,
Analyse, Modélisation, UMR CNRS 6230, UFR des Sciences et des
Techniques, 2 rue de la Houssinière, BP 92208, 44322 NANTES
Cedex 3, France
| |
Collapse
|
40
|
Dubar F, Slomianny C, Khalife J, Dive D, Kalamou H, Guérardel Y, Grellier P, Biot C. The Ferroquine Antimalarial Conundrum: Redox Activation and Reinvasion Inhibition. Angew Chem Int Ed Engl 2013; 52:7690-3. [DOI: 10.1002/anie.201303690] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Indexed: 11/08/2022]
|
41
|
Dubar F, Slomianny C, Khalife J, Dive D, Kalamou H, Guérardel Y, Grellier P, Biot C. The Ferroquine Antimalarial Conundrum: Redox Activation and Reinvasion Inhibition. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303690] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
42
|
Kumar K, Carrère-Kremer S, Kremer L, Guérardel Y, Biot C, Kumar V. 1H-1,2,3-Triazole-Tethered Isatin–Ferrocene and Isatin–Ferrocenylchalcone Conjugates: Synthesis and in Vitro Antitubercular Evaluation. Organometallics 2013. [DOI: 10.1021/om301157z] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Kewal Kumar
- Department
of Chemistry, Guru Nanak Dev University, Amritsar-143005, Punjab, India
| | - Séverine Carrère-Kremer
- Laboratoire de Dynamique des
Interactions Membranaires Normales et Pathologiques, UMR 5235 CNRS, Université Montpellier 2I, Place Eugène
Bataillon, 34095 Montpellier Cedex 05, France
| | - Laurent Kremer
- Laboratoire de Dynamique des
Interactions Membranaires Normales et Pathologiques, UMR 5235 CNRS, Université Montpellier 2I, Place Eugène
Bataillon, 34095 Montpellier Cedex 05, France
- INSERM, DIMNP, Place
Eugène Bataillon, 34095 Montpellier Cedex 05, France
| | - Yann Guérardel
- Unité de Glycobiologie Structurale
et Fonctionnelle, Université Lille 1, F-59650 Villeneuve d’Ascq, France
- CNRS, UMR 8576, F-59650 Villeneuve
d’Ascq, France
| | - Christophe Biot
- Unité de Glycobiologie Structurale
et Fonctionnelle, Université Lille 1, F-59650 Villeneuve d’Ascq, France
- CNRS, UMR 8576, F-59650 Villeneuve
d’Ascq, France
| | - Vipan Kumar
- Department
of Chemistry, Guru Nanak Dev University, Amritsar-143005, Punjab, India
| |
Collapse
|
43
|
Combrouse T, Sadovskaya I, Faille C, Kol O, Guérardel Y, Midelet-Bourdin G. Quantification of the extracellular matrix of the Listeria monocytogenes biofilms of different phylogenic lineages with optimization of culture conditions. J Appl Microbiol 2013; 114:1120-31. [PMID: 23317349 DOI: 10.1111/jam.12127] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 12/18/2012] [Accepted: 12/29/2012] [Indexed: 12/15/2022]
Abstract
AIMS The purpose of this study was to quantify the extracellular matrix of Listeria monocytogenes biofilm. A preliminary study was carried out to establish a relationship between phylogenetic lineage of 27 strains and their ability to form biofilm in various conditions. METHODS AND RESULTS Biofilm formation on microtitre plates of 27 strains of L. monocytogenes belonging to lineages I or II was evaluated in different conditions [two temperatures (37 and 22°C) and two media (tryptone soy broth yeast extract medium (TSBYE) and MCDB 202 defined medium)] using crystal violet assay. Lineage II strains produced significantly more biofilm than lineage I strains. In microtitre plates assay, biofilm quantities were greater in MCDB 202 vs TSBYE medium [confirmed by scanning electron microscopy (SEM) analysis] and at 37 vs 22°C. Cultivable bacteria from biofilm population on Petri dishes were enumerated in greater quantities in TSBYE than in MCDB 202 medium. The SEM investigation established that L. monocytogenes biofilms produce extracellular matrix in both media at 37°C. The amount of exopolymers in the extracellular matrix and the pH values were significantly higher in TSBYE than in MCDB 202 medium. The exception was the ScottA strain that presented similar pH values and exopolymer contents in both media. Proteins were the most abundant exopolymer components, followed by DNA and polysaccharides. CONCLUSIONS The interpretation of results of biofilm quantification was depending on the growth conditions, the viability of the bacteria and the analysis method. The quantities of proteins, DNA and polysaccharides were different according to the strains and the medium. SIGNIFICANCE AND IMPACT OF THE STUDY This study screened the potential of a wide panel of L. monocytogenes strains to synthesize exopolymers in biofilm growing condition. The characterization of L. monocytogenes biofilm composition may help to develop new strategies to prevent the formation of biofilms and to remove the biofilms.
Collapse
Affiliation(s)
- T Combrouse
- Université Lille1, UGSF (Unité de Glycobiologie Structurale et Fonctionnelle), Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, France
| | | | | | | | | | | |
Collapse
|
44
|
Pourcelot M, Cattiaux L, Sfihi-Loualia G, Fabre E, Krzewinski F, Fradin C, Poulain D, Delplace F, Guérardel Y, Mallet JM. Mantyl tagged oligo α (1 → 2) mannosides as Candida albicans β-mannosyl transferases substrates: a comparison between synthetic strategies. RSC Adv 2013. [DOI: 10.1039/c3ra43340d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
45
|
Péanne R, Vanbeselaere J, Vicogne D, Mir AM, Biot C, Matthijs G, Guérardel Y, Foulquier F. Assessing ER and Golgi N-Glycosylation Process Using Metabolic Labeling in Mammalian Cultured Cells. Methods Cell Biol 2013; 118:157-76. [DOI: 10.1016/b978-0-12-417164-0.00010-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
46
|
Kumar K, Carrère-Kremer S, Kremer L, Guérardel Y, Biot C, Kumar V. Azide–alkynecycloadditionen route towards 1H-1,2,3-triazole-tethered β-lactam–ferrocene and β-lactam–ferrocenylchalcone conjugates: synthesis and in vitro anti-tubercular evaluation. Dalton Trans 2013; 42:1492-500. [DOI: 10.1039/c2dt32148c] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
47
|
Coddeville B, Wu SW, Fabre E, Brassart C, Rombouts Y, Burguière A, Kremer L, Khoo KH, Elass-Rochard E, Guérardel Y. Identification of the Mycobacterium marinum Apa antigen O-mannosylation sites reveals important glycosylation variability with the M. tuberculosis Apa homologue. J Proteomics 2012; 75:5695-705. [PMID: 22828516 DOI: 10.1016/j.jprot.2012.07.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/28/2012] [Accepted: 07/12/2012] [Indexed: 01/22/2023]
Abstract
The 45/47 kDa Apa, an immuno-dominant antigen secreted by Mycobacterium tuberculosis is O-mannosylated at multiple sites. Glycosylation of Apa plays a key role in colonization and invasion of the host cells by M. tuberculosis through interactions of Apa with the host immune system C-type lectins. Mycobacterium marinum (M.ma) a fish pathogen, phylogenetically close to M. tuberculosis, induces a granulomatous response with features similar to those described for M. tuberculosis in human. Although M.ma possesses an Apa homologue, its glycosylation status is unknown, and whether this represents a crucial element in the pathophysiology induced by M.ma remains to be addressed. To this aim, we have identified two concanavalin A-reactive 45/47 kDa proteins from M.ma, which have been further purified by a two-step anion exchange chromatography process. Advanced liquid chromatography-nanoESI mass spectrometry-based proteomic analyses of peptides, derived from either tryptic digestion alone or in combination with the Asp-N endoproteinase, established that M.ma Apa possesses up to seven distinct O-mannosylated sites with mainly single mannose substitutions, which can be further extended at the Ser/Thr/Pro rich region near the N-terminus. This opens the way to further studies focussing on the involvement and biological functions of Apa O-mannosylation using the M.ma/zebrafish model.
Collapse
Affiliation(s)
- Bernadette Coddeville
- Université Lille1, Unité de Glycobiologie Structurale et Fonctionnelle, UGSF, F-59650 Villeneuve d'Ascq, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Elass-Rochard E, Rombouts Y, Coddeville B, Maes E, Blervaque R, Hot D, Kremer L, Guérardel Y. Structural determination and Toll-like receptor 2-dependent proinflammatory activity of dimycolyl-diarabino-glycerol from Mycobacterium marinum. J Biol Chem 2012; 287:34432-44. [PMID: 22798072 DOI: 10.1074/jbc.m112.378083] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Although it was identified in the cell wall of several pathogenic mycobacteria, the biological properties of dimycolyl-diarabino-glycerol have not been documented yet. In this study an apolar glycolipid, presumably corresponding to dimycolyl-diarabino-glycerol, was purified from Mycobacterium marinum and subsequently identified as a 5-O-mycolyl-β-Araf-(1→2)-5-O-mycolyl-α-Araf-(1→1')-glycerol (designated Mma_DMAG) using a combination of nuclear magnetic resonance spectroscopy and mass spectrometry analyses. Lipid composition analysis revealed that mycolic acids were dominated by oxygenated mycolates over α-mycolates and devoid of trans-cyclopropane functions. Highly purified Mma_DMAG was used to demonstrate its immunomodulatory activity. Mma_DMAG was found to induce the secretion of proinflammatory cytokines (TNF-α, IL-8, IL-1β) in human macrophage THP-1 cells and to trigger the expression of ICAM-1 and CD40 cell surface antigens. This activation mechanism was dependent on TLR2, but not on TLR4, as demonstrated by (i) the use of neutralizing anti-TLR2 and -TLR4 antibodies and by (ii) the detection of secreted alkaline phosphatase in HEK293 cells co-transfected with the human TLR2 and secreted embryonic alkaline phosphatase reporter genes. In addition, transcriptomic analyses indicated that various genes encoding proinflammatory factors were up-regulated after exposure of THP-1 cells to Mma_DMAG. Importantly, a wealth of other regulated genes related to immune and inflammatory responses, including chemokines/cytokines and their respective receptors, adhesion molecules, and metalloproteinases, were found to be modulated by Mma_DMAG. Overall, this study suggests that DMAG may be an active cell wall glycoconjugate driving host-pathogen interactions and participating in the immunopathogenesis of mycobacterial infections.
Collapse
Affiliation(s)
- Elisabeth Elass-Rochard
- Université Lille Nord de France, Université Lille1, Unité de Glycobiologie Structurale et Fonctionnelle, UGSF, IFR 147, France.
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Dubar F, Bohic S, Dive D, Guérardel Y, Cloetens P, Khalife J, Biot C. Deciphering the Resistance-Counteracting Functions of Ferroquine in Plasmodium falciparum-Infected Erythrocytes. ACS Med Chem Lett 2012; 3:480-3. [PMID: 24900498 DOI: 10.1021/ml300062q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [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: 03/08/2012] [Accepted: 04/13/2012] [Indexed: 02/06/2023] Open
Abstract
The aminoquinoline chloroquine (CQ) has been widely used for treating malaria since World War II. Resistance to CQ began to spread around 1957 and is now found in all malarious areas of the world. CQ resistance is caused by multiple mutations in the Plasmodium falciparum chloroquine resistance transporter (PfCRT). These mutations result in an increased efflux of CQ from the acidic digestive vacuole (DV) to the cytosol of the parasite. This year, we proposed a strategy to locate and quantify the aminoquinolines in situ within infected red blood cells (iRBCs) using synchrotron based X-ray nanoprobe fluorescence. Direct measurements of unlabeled CQ and ferroquine (FQ) (a ferrocene-CQ conjugate, extremely active against CQ-resistant strains) enabled us to evidence fundamentally different transport mechanisms from the cytosol to the DV between CQ and FQ in the CQ-susceptible strain HB3. These results inspired the present study of the localization of CQ and FQ in the CQ-resistant strain W2. The introduction of the ferrocene core in the lateral side chain of CQ has an important consequence: the transporter is unable to efflux FQ from the DV. We also found that resistant parasites treated by FQ accumulate a sulfur-containing compound, credibly glutathion, in their DV.
Collapse
Affiliation(s)
- Faustine Dubar
- Université Lille 1, UCCS, CNRS UMR 8181, 59652 Villeneuve d'Ascq Cedex, France
| | - Sylvain Bohic
- Inserm, U836, équipe 6, Grenoble Institut des Neurosciences, 38054 Grenoble, France
- ESRF Facility, ESRF, BP220, Grenoble, France
| | - Daniel Dive
- CIIL, Inserm U 1019, UMR CNRS 8024, Institut Pasteur de Lille, 1 rue du Pr Calmette, 59019 Lille Cedex, France
| | - Yann Guérardel
- Université Lille 1, UGSF, CNRS UMR 8576, IFR 147, 59650 Villeneuve d'Ascq Cédex, France
| | | | - Jamal Khalife
- CIIL, Inserm U 1019, UMR CNRS 8024, Institut Pasteur de Lille, 1 rue du Pr Calmette, 59019 Lille Cedex, France
| | - Christophe Biot
- Université Lille 1, UGSF, CNRS UMR 8576, IFR 147, 59650 Villeneuve d'Ascq Cédex, France
| |
Collapse
|
50
|
Le DTL, Guérardel Y, Loubière P, Mercier-Bonin M, Dague E. Measuring kinetic dissociation/association constants between Lactococcus lactis bacteria and mucins using living cell probes. Biophys J 2012; 101:2843-53. [PMID: 22261074 DOI: 10.1016/j.bpj.2011.10.034] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 10/11/2011] [Accepted: 10/12/2011] [Indexed: 01/03/2023] Open
Abstract
In this work we focused on quantifying adhesion between Lactococcus lactis, the model for lactic acid bacteria (LAB) and mucins. Interactions between two strains of L. lactis (IBB477 and MG1820 as control) and pig gastric mucin-based coating were measured and compared with the use of atomic force microscopy. Analysis of retraction force-distance curves shed light on the differential contributions of nonspecific and specific forces. An increased proportion of specific adhesive events was obtained for IBB477 (20% vs. 5% for the control). Blocking assays with free pig gastric mucin and its O-glycan moiety showed that oligosaccharides play a major (but not exclusive) role in L. lactis-mucins interactions. Specific interactions were analyzed in terms of kinetic constants. An increase in the loading rate of atomic force microscope tip led to a higher force between interacting biological entities, which was directly linked to the kinetic dissociation constant (K(off)). Enhancing the contact time between the tip and the sample allowed an increase in the interaction probability, which can be related to the kinetic association constant (K(on)). Variations in the loading rate and contact time enabled us to determine K(on) (3.3 × 10(2) M(-1)·s(-1)) and K(off) (0.46 s(-1)), and the latter was consistent with values given in the literature for sugar-protein interactions.
Collapse
Affiliation(s)
- Doan Thanh Lam Le
- INSA, UPS, INP, Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés, Université de Toulouse, Toulouse, France
| | | | | | | | | |
Collapse
|