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Santos ALS, Silva BA, da Cunha MML, Branquinha MH, Mello TP. Fibronectin-binding molecules of Scedosporium apiospermum: focus on adhesive events. Braz J Microbiol 2023; 54:2577-2585. [PMID: 37442880 PMCID: PMC10689634 DOI: 10.1007/s42770-023-01062-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023] Open
Abstract
Scedosporium apiospermum is a widespread, emerging, and multidrug-resistant filamentous fungus that can cause localized and disseminated infections. The initial step in the infection process involves the adhesion of the fungus to host cells and/or extracellular matrix components. However, the mechanisms of adhesion involving surface molecules in S. apiospermum are not well understood. Previous studies have suggested that the binding of fungal receptors to fibronectin enhances its ability to attach to and infect host cells. The present study investigated the effects of fibronectin on adhesion events of S. apiospermum. The results revealed that conidial cells were able to bind to both immobilized and soluble human fibronectin in a typically dose-dependent manner. Moreover, fibronectin binding was virtually abolished in trypsin-treated conidia, suggesting the proteinaceous nature of the binding site. Western blotting assay, using fibronectin and anti-fibronectin antibody, evidenced 7 polypeptides with molecular masses ranging from 55 to 17 kDa in both conidial and mycelial extracts. Fibronectin-binding molecules were localized by immunofluorescence and immunocytochemistry microscopies at the cell wall and in intracellular compartments of S. apiospermum cells. Furthermore, a possible function for the fibronectin-like molecules of S. apiospermum in the interaction with host lung cells was assessed. Conidia pre-treated with soluble fibronectin showed a significant reduction in adhesion to either epithelial or fibroblast lung cells in a classically dose-dependent manner. Similarly, the pre-treatment of the lung cells with anti-fibronectin antibodies considerably diminished the adhesion. Collectively, the results demonstrated the presence of fibronectin-binding molecules in S. apiospermum cells and their role in adhesive events.
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Affiliation(s)
- André L S Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- Rede Micologia RJ - Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro, Brazil.
- Programa de Pós-Graduação em Bioquímica (PPGBq), Instituto de Química (IQ), UFRJ, Rio de Janeiro, Brazil.
| | - Bianca A Silva
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Instituto de Saúde de Nova Friburgo, Universidade Federal Fluminense (UFF), Nova Friburgo, Rio de Janeiro, Brazil
| | - Marcel M L da Cunha
- Núcleo Multidisciplinar de Pesquisa UFRJ-Xerém em Biologia (NUMPEX-BIO), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Marta H Branquinha
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Rede Micologia RJ - Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro, Brazil
| | - Thaís P Mello
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
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Talaromyces marneffei Infection: Virulence, Intracellular Lifestyle and Host Defense Mechanisms. J Fungi (Basel) 2022; 8:jof8020200. [PMID: 35205954 PMCID: PMC8880324 DOI: 10.3390/jof8020200] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/14/2022] [Accepted: 02/18/2022] [Indexed: 12/02/2022] Open
Abstract
Talaromycosis (Penicilliosis) is an opportunistic mycosis caused by the thermally dimorphic fungus Talaromyces (Penicillium) marneffei. Similar to other major causes of systemic mycoses, the extent of disease and outcomes are the results of complex interactions between this opportunistic human pathogen and a host’s immune response. This review will highlight the current knowledge regarding the dynamic interaction between T. marneffei and mammalian hosts, particularly highlighting important aspects of virulence factors, intracellular lifestyle and the mechanisms of immune defense as well as the strategies of the pathogen for manipulating and evading host immune cells.
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Zhang B, Chi L. Chondroitin Sulfate/Dermatan Sulfate-Protein Interactions and Their Biological Functions in Human Diseases: Implications and Analytical Tools. Front Cell Dev Biol 2021; 9:693563. [PMID: 34422817 PMCID: PMC8377502 DOI: 10.3389/fcell.2021.693563] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 07/20/2021] [Indexed: 01/12/2023] Open
Abstract
Chondroitin sulfate (CS) and dermatan sulfate (DS) are linear anionic polysaccharides that are widely present on the cell surface and in the cell matrix and connective tissue. CS and DS chains are usually attached to core proteins and are present in the form of proteoglycans (PGs). They not only are important structural substances but also bind to a variety of cytokines, growth factors, cell surface receptors, adhesion molecules, enzymes and fibrillary glycoproteins to execute series of important biological functions. CS and DS exhibit variable sulfation patterns and different sequence arrangements, and their molecular weights also vary within a large range, increasing the structural complexity and diversity of CS/DS. The structure-function relationship of CS/DS PGs directly and indirectly involves them in a variety of physiological and pathological processes. Accumulating evidence suggests that CS/DS serves as an important cofactor for many cell behaviors. Understanding the molecular basis of these interactions helps to elucidate the occurrence and development of various diseases and the development of new therapeutic approaches. The present article reviews the physiological and pathological processes in which CS and DS participate through their interactions with different proteins. Moreover, classic and emerging glycosaminoglycan (GAG)-protein interaction analysis tools and their applications in CS/DS-protein characterization are also discussed.
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Affiliation(s)
- Bin Zhang
- National Glycoengineering Research Center, Shandong University, Qingdao, China
| | - Lianli Chi
- National Glycoengineering Research Center, Shandong University, Qingdao, China
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Karakioulaki M, Papakonstantinou E, Stolz D. Extracellular matrix remodelling in COPD. Eur Respir Rev 2020; 29:29/158/190124. [PMID: 33208482 DOI: 10.1183/16000617.0124-2019] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 05/16/2020] [Indexed: 12/30/2022] Open
Abstract
The extracellular matrix (ECM) of the lung plays several important roles in lung function, as it offers a low resistant pathway that allows the exchange of gases, provides compressive strength and elasticity that supports the fragile alveolar-capillary intersection, controls the binding of cells with growth factors and cell surface receptors and acts as a buffer against retention of water.COPD is a chronic inflammatory respiratory condition, characterised by various conditions that result in progressive airflow limitation. At any stage in the course of the disease, acute exacerbations of COPD may occur and lead to accelerated deterioration of pulmonary function. A key factor of COPD is airway remodelling, which refers to the serious alterations of the ECM affecting airway wall thickness, resistance and elasticity. Various studies have shown that serum biomarkers of ECM turnover are significantly associated with disease severity in patients with COPD and may serve as potential targets to control airway inflammation and remodelling in COPD. Unravelling the complete molecular composition of the ECM in the diseased lungs will help to identify novel biomarkers for disease progression and therapy.
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Affiliation(s)
- Meropi Karakioulaki
- Clinic of Pulmonary Medicine and Respiratory Cell Research, University Hospital, Basel, Switzerland
| | - Eleni Papakonstantinou
- Clinic of Pulmonary Medicine and Respiratory Cell Research, University Hospital, Basel, Switzerland.,Dept of Pharmacology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Daiana Stolz
- Clinic of Pulmonary Medicine and Respiratory Cell Research, University Hospital, Basel, Switzerland
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Tsang CC, Lau SKP, Woo PCY. Sixty Years from Segretain’s Description: What Have We Learned and Should Learn About the Basic Mycology of Talaromyces marneffei? Mycopathologia 2019; 184:721-729. [DOI: 10.1007/s11046-019-00395-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Protein interactome analysis of iduronic acid-containing glycosaminoglycans reveals a novel flagellar invasion factor MbhA. J Proteomics 2019; 208:103485. [PMID: 31421271 DOI: 10.1016/j.jprot.2019.103485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 08/02/2019] [Accepted: 08/12/2019] [Indexed: 12/27/2022]
Abstract
Pathogens are able to exploit specific glycosaminoglycans (GAGs), especially iduronic acid (IdoA)-containing GAGs, to invade the host. By analyzing Escherichia coli proteome chip data, we identified the interactomes of three IdoA-containing GAGs: heparin, heparin sulfate (HS), and chondroitin sulfate B (CSB). Using non-IdoA-containing GAG, chondroitin sulfate C, as a negative control, 157 proteins specifically binding with IdoA-containing GAGs were revealed in the present study. These proteins showed functional enrichment in protein synthesis and metabolism. Fifteen proteins which commonly interacts with three IdoA-containing GAGs were further examined. The regular expression for motif showed these common IdoA interactome shared a conserved sequence. Among them, we identified a second flagellar system outer membrane protein, MbhA. The MbhA has Kd values of 8.9 × 10-8 M, 5.3 × 10-7 M, and 1.79 × 10-7 M to interact with heparin, HS, and CSB, respectively. Using flow cytometry, we confirmed that the MbhA protein can bind to human epithelial cells HCT-8. Overexpression of mbhA increased the percentage of invasion in E. coli which lacks a second flagellar system. Moreover, pre-blocking of HCT-8 cells with MbhA inhibited the bacterial invasion, implying the importance of the direct interaction of MbhA and the host cell surface on bacterial invasion. SIGNIFICANCE: We analyzed the Escherichia coli proteomic data to elucidate the interactomes of three different IdoA-containing GAGs (heparin, HS, and CSB) because these IdoA-containing GAGs can mediate bacterial invasion to the host. Through proteomic and systematic analysis, a second flagellar system outer membrane protein, MbhA, was also identified in the present study. Affinity assay confirmed that MbhA can bind to three IdoA-containing GAGs heparin, HS, and CSB. The result of flow cytometry also showed MbhA can interact with human epithelial cells HCT-8. Results of bacteria invasion assay showed overexpression of mbhA promoted the bacterial invasion. Moreover, pre-blocking of HCT-8 cells with MbhA also reduced the percentage of bacterial invasion. These findings correspond well that MbhA is one of invasion factors.
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Kennelly TM, Li Y, Cao Y, Qwarnstrom EE, Geoghegan M. Distinct Binding Interactions of α 5β 1-Integrin and Proteoglycans with Fibronectin. Biophys J 2019; 117:688-695. [PMID: 31337547 PMCID: PMC6712418 DOI: 10.1016/j.bpj.2019.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 06/13/2019] [Accepted: 07/03/2019] [Indexed: 02/07/2023] Open
Abstract
Dynamic single-molecule force spectroscopy was performed to monitor the unbinding of fibronectin with the proteoglycans syndecan-4 (SDC4) and decorin and to compare this with the unbinding characteristics of α5β1-integrin. A single energy barrier was sufficient to describe the unbinding of both SDC4 and decorin from fibronectin, whereas two barriers were observed for the dissociation of α5β1-integrin from fibronectin. The outer (high-affinity) barriers in the interactions of fibronectin with α5β1-integrin and SDC4 are characterized by larger barrier heights and widths and slower dissociation rates than those of the inner (low-affinity) barriers in the interactions of fibronectin with α5β1-integrin and decorin. These results indicate that SDC4 and (ultimately) α5β1-integrin have the ability to withstand deformation in their interactions with fibronectin, whereas the decorin-fibronectin interaction is considerably more brittle.
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Affiliation(s)
- Thomas M Kennelly
- Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom; Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Yiran Li
- Department of Physics, Nanjing University, Nanjing, People's Republic of China
| | - Yi Cao
- Department of Physics, Nanjing University, Nanjing, People's Republic of China
| | - Eva E Qwarnstrom
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.
| | - Mark Geoghegan
- Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom.
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Molecular characterization of CHST11 and its potential role in nacre formation in pearl oyster Pinctada fucata martensii. ELECTRON J BIOTECHN 2017. [DOI: 10.1016/j.ejbt.2017.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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9
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Dual and antagonic therapeutic effects of sulfated glycans. Bioorg Med Chem 2016; 24:3965-3971. [DOI: 10.1016/j.bmc.2016.07.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 07/15/2016] [Accepted: 07/16/2016] [Indexed: 11/24/2022]
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10
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Papakonstantinou E, Klagas I, Roth M, Tamm M, Stolz D. Acute Exacerbations of COPD Are Associated With Increased Expression of Heparan Sulfate and Chondroitin Sulfate in BAL. Chest 2016; 149:685-95. [DOI: 10.1378/chest.14-2868] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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11
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Pomin VH. Marine Non-Glycosaminoglycan Sulfated Glycans as Potential Pharmaceuticals. Pharmaceuticals (Basel) 2015; 8:848-64. [PMID: 26690451 PMCID: PMC4695813 DOI: 10.3390/ph8040848] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 11/30/2015] [Accepted: 12/08/2015] [Indexed: 12/18/2022] Open
Abstract
Sulfated fucans (SFs) and sulfated galactans (SGs) are currently the marine non-glycosaminoglycan (GAG) sulfated glycans most studied in glycomics. These compounds exhibit therapeutic effects in several pathophysiological systems such as blood coagulation, thrombosis, neovascularization, cancer, inflammation, and microbial infections. As analogs of the largely employed GAGs and due to some limitations of the GAG-based therapies, SFs and SGs comprise new carbohydrate-based therapeutics available for clinical studies. Here, the principal structural features and the major mechanisms of action of the SFs and SGs in the above-mentioned pathophysiological systems are presented. Discussion is also given on the current challenges and the future perspectives in drug development of these marine glycans.
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Affiliation(s)
- Vitor H Pomin
- Program of Glycobiology, Institute of Medical Biochemistry Leopoldo de Meis, University Hospital Clementino Fraga Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-913, Brazil.
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de Oliveira HC, da Silva JDF, Scorzoni L, Marcos CM, Rossi SA, de Paula E Silva ACA, Assato PA, da Silva RAM, Fusco-Almeida AM, Mendes-Giannini MJS. Importance of adhesins in virulence of Paracoccidioides spp. Front Microbiol 2015; 6:303. [PMID: 25914695 PMCID: PMC4392702 DOI: 10.3389/fmicb.2015.00303] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 03/27/2015] [Indexed: 12/26/2022] Open
Abstract
Members of the Paracoccidioides genus are the etiologic agents of paracoccidioidomycosis (PCM). This genus is composed of two species: Paracoccidioides brasiliensis and Paracoccidioides lutzii. The correct molecular taxonomic classification of these fungi has created new opportunities for studying and understanding their relationships with their hosts. Paracoccidioides spp. have features that permit their growth under adverse conditions, enable them to adhere to and invade host tissues and may contribute to disease development. Cell wall proteins called adhesins facilitate adhesion and are capable of mediating fungi-host interactions during infection. This study aimed to evaluate the adhesion profile of two species of the genus Paracoccidioides, to analyze the expression of adhesin-encoding genes by real-time PCR and to relate these results to the virulence of the species, as assessed using a survival curve in mice and in Galleria mellonella after blocking the adhesins. A high level of heterogeneity was observed in adhesion and adhesin expression, showing that the 14-3-3 and enolase molecules are the most highly expressed adhesins during pathogen-host interaction. Additionally, a survival curve revealed a correlation between the adhesion rate and survival, with P. brasiliensis showing higher adhesion and adhesin expression levels and greater virulence when compared with P. lutzii. After blocking 14-3-3 and enolase adhesins, we observed modifications in the virulence of these two species, revealing the importance of these molecules during the pathogenesis of members of the Paracoccidioides genus. These results revealed new insights into the host-pathogen interaction of this genus and may enhance our understanding of different isolates that could be useful for the treatment of this mycosis.
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Affiliation(s)
- Haroldo C de Oliveira
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Julhiany de Fátima da Silva
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Liliana Scorzoni
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Caroline M Marcos
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Suelen A Rossi
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Ana C A de Paula E Silva
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Patrícia A Assato
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Rosângela A M da Silva
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Ana M Fusco-Almeida
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
| | - Maria J S Mendes-Giannini
- Laboratório de Micologia Clínica, Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas, UNESP - Universidade Estadual Paulista Araraquara, Brazil
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Lau SKP, Tse H, Chan JSY, Zhou AC, Curreem SOT, Lau CCY, Yuen KY, Woo PCY. Proteome profiling of the dimorphic fungus Penicillium marneffei extracellular proteins and identification of glyceraldehyde-3-phosphate dehydrogenase as an important adhesion factor for conidial attachment. FEBS J 2013; 280:6613-26. [PMID: 24128375 DOI: 10.1111/febs.12566] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/26/2013] [Accepted: 10/04/2013] [Indexed: 12/18/2022]
Abstract
Despite being the most important thermal dimorphic fungus causing systemic mycosis in Southeast Asia, the pathogenic mechanisms of Penicillium marneffei remain largely unknown. By comparing the extracellular proteomes of P. marneffei in mycelial and yeast phases, we identified 12 differentially expressed proteins among which glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and heat shock protein 60 (HSP60) were found to be upregulated in mycelial and yeast phases respectively. Based on previous findings in other pathogens, we hypothesized that these two extracellular proteins may be involved in adherence during P. marneffei-host interaction. Using inhibition assays with recombinant GAPDH (rGAPDH) proteins and anti-rGAPDH sera, we demonstrated that adhesion of P. marneffei conidia to fibronectin and laminin was inhibited by rGAPDH or rabbit anti-rGAPDH serum in a dose-dependent manner. Similarly, a dose-dependent inhibition of conidial adherence to A549 pneumocytes by rGAPDH or rabbit anti-rGAPDH serum was observed, suggesting that P. marneffei GAPDH can mediate binding of conidia to human extracellular matrix proteins and pneumocytes. However, HSP60 did not exhibit similar inhibition on conidia adherence, and neither GAPDH norHSP60 exhibited inhibition on adherence to J774 or THP-1 macrophage cell lines. This report demonstrates GAPDH as an adherence factor in P. marneffei by mediating conidia adherence to host bronchoalveolar epithelium during the early establishment phase of infection.
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Affiliation(s)
- Susanna K P Lau
- State Key Laboratory of Emerging Infectious Diseases, Research Centre of Infection and Immunology and Carol Yu Centre for Infection, University of Hong Kong, China; Department of Microbiology, University of Hong Kong, China
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Martín R, Martín C, Escobedo S, Suárez JE, Quirós LM. Surface glycosaminoglycans mediate adherence between HeLa cells and Lactobacillus salivarius Lv72. BMC Microbiol 2013; 13:210. [PMID: 24044741 PMCID: PMC3848620 DOI: 10.1186/1471-2180-13-210] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 09/11/2013] [Indexed: 02/05/2023] Open
Abstract
Background The adhesion of lactobacilli to the vaginal surface is of paramount importance to develop their probiotic functions. For this reason, the role of HeLa cell surface proteoglycans in the attachment of Lactobacillus salivarius Lv72, a mutualistic strain of vaginal origin, was investigated. Results Incubation of cultures with a variety of glycosaminoglycans (chondroitin sulfate A and C, heparin and heparan sulfate) resulted in marked binding interference. However, no single glycosaminoglycan was able to completely abolish cell binding, the sum of all having an additive effect that suggests cooperation between them and recognition of specific adhesins on the bacterial surface. In contrast, chondroitin sulfate B enhanced cell to cell attachment, showing the relevance of the stereochemistry of the uronic acid and the sulfation pattern on binding. Elimination of the HeLa surface glycosaminoglycans with lyases also resulted in severe adherence impairment. Advantage was taken of the Lactobacillus-glycosaminoglycans interaction to identify an adhesin from the bacterial surface. This protein, identify as a soluble binding protein of an ABC transporter system (OppA) by MALDI-TOF/(MS), was overproduced in Escherichia coli, purified and shown to interfere with L. salivarius Lv72 adhesion to HeLa cells. Conclusions These data suggest that glycosaminoglycans play a fundamental role in attachment of mutualistic bacteria to the epithelium that lines the cavities where the normal microbiota thrives, OppA being a bacterial adhesin involved in the process.
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Affiliation(s)
- Rebeca Martín
- Área de Microbiología, Universidad de Oviedo, Julián Clavería 6 33006 Oviedo, Spain.
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Real-time monitoring of the adherence of Streptococcus anginosus group bacteria to extracellular matrix decorin and biglycan proteoglycans in biofilm formation. Res Microbiol 2012; 163:436-47. [DOI: 10.1016/j.resmic.2012.07.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 07/16/2012] [Indexed: 11/22/2022]
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16
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Protein adsorption and cytocompatibility of poly(L-lactic acid) surfaces modified with biomacromolecules. J Appl Polym Sci 2012. [DOI: 10.1002/app.36976] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zhou Q, Chen H, Qu M, Wang Q, Yang L, Xie L. Development of a novel ex vivo model of corneal fungal adherence. Graefes Arch Clin Exp Ophthalmol 2010; 249:693-700. [PMID: 21184093 DOI: 10.1007/s00417-010-1601-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 11/22/2010] [Accepted: 12/02/2010] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To construct a suitable ex vivo model for the research of molecular mechanisms and the pharmacological screening of fungal adherence on the corneal surface. MATERIALS AND METHODS Mouse eyes were divided into three groups as follows: a control group with normal corneal epithelium, a group with corneal epithelium that was needle-scarified, and a group with corneal epithelium that was completely debrided. All 96 corneas were placed in organ culture and inoculated with 5 μl spore suspensions of Candida albicans at 10⁹, 10⁸, or 10⁷ colony-forming units (CFU)/ml and incubated for 0, 30, 60, or 120 min. The corneas were homogenated and diluted for quantification by counting the CFU. The effects of amphotericin B or chondroitin sulfate on the adherence of the fungal spores were evaluated with the ex vivo organ culture model and were also compared with the human corneal epithelium monolayer model in vitro. RESULTS Compared with the normal corneas with intact epithelium, the corneas with scarified and debrided epithelium adhered more spores for above two and four folds. The spore adhesion on the corneal surface was in an inoculation concentration- and incubation time-dependent manner. Moreover, both amphotericin B and chondroitin sulfate inhibited the adhesion of C. albicans spores on the corneal surface, but the inhibitory rates were different between the ex vivo corneal organ culture model and the in vitro corneal epithelium monolayer model. CONCLUSIONS The corneal organ culture was a suitable ex vivo model for the research of fungal adhesion mechanisms and drug screening.
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Affiliation(s)
- Qingjun Zhou
- Shandong Provincial Key Lab of Ophthalmology, Shandong Eye Institute, Qingdao, 266071, China
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Sawesi O, Spillmann D, Lundén A, Wernersson S, Åbrink M. Serglycin-independent release of active mast cell proteases in response to Toxoplasma gondii infection. J Biol Chem 2010; 285:38005-13. [PMID: 20864536 PMCID: PMC2992234 DOI: 10.1074/jbc.m110.118471] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Revised: 08/13/2010] [Indexed: 01/05/2023] Open
Abstract
Earlier studies identified serglycin proteoglycan and its heparin chains to be important for storage and activity of mast cell proteases. However, the importance of serglycin for secretion and activity of mast cell proteases in response to parasite infection has been poorly investigated. To address this issue, we studied the effects on mast cell proteases in serglycin-deficient and wild type mice after peritoneal infection with the obligate intracellular parasite Toxoplasma gondii. In line with previous results, we found severely reduced levels of cell-bound mast cell proteases in both noninfected and infected serglycin-deficient mice. However, serglycin-deficient mice secreted mast cell proteases at wild type levels at the site of infection, and enzymatic activities associated with mast cell proteases were equally up-regulated in wild type and serglycin-deficient mice 48 h after infection. In both wild type and serglycin-deficient mice, parasite infection resulted in highly increased extracellular levels of glycosaminoglycans, including hyaluronan and chondroitin sulfate A, suggesting a role of these substances in the general defense mechanism. In contrast, heparan sulfate/heparin was almost undetectable in serglycin-deficient mice, and in wild type mice, it was mainly confined to the cellular fraction and was not increased upon infection. Furthermore, the heparan sulfate/heparin population was less sulfated in serglycin-deficient than in wild type mice indicative for the absence of heparin, which supports that heparin production is dependent on the serglycin core protein. Together, our results suggest that serglycin proteoglycan is dispensable for normal secretion and activity of mast cell proteases in response to peritoneal infection with T. gondii.
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Affiliation(s)
- Osama Sawesi
- From the Department of Medical Biochemistry and Microbiology, Uppsala University, SE-75123 Uppsala, and
- Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, SE-75123 Uppsala, Sweden
| | - Dorothe Spillmann
- From the Department of Medical Biochemistry and Microbiology, Uppsala University, SE-75123 Uppsala, and
| | - Anna Lundén
- the Departments of Biomedical Sciences and Veterinary Public Health, Section of Parasitology (SWEPAR), SE-75189 Uppsala, and
| | - Sara Wernersson
- Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, SE-75123 Uppsala, Sweden
| | - Magnus Åbrink
- From the Department of Medical Biochemistry and Microbiology, Uppsala University, SE-75123 Uppsala, and
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Papakonstantinou E, Karakiulakis G. The 'sweet' and 'bitter' involvement of glycosaminoglycans in lung diseases: pharmacotherapeutic relevance. Br J Pharmacol 2009; 157:1111-27. [PMID: 19508395 DOI: 10.1111/j.1476-5381.2009.00279.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The extracellular matrix (ECM) plays a significant role in the structure and function of the lung. The ECM is a three-dimensional fibre mesh, comprised of various interconnected and intercalated macromolecules, among which are the glycosaminoglycans (GAG). GAG are long, linear and highly charged, heterogeneous polysaccharides that are composed of a variable number of repeating disaccharide units (macromolecular sugars) and most of them, as their name implies, have a sweet taste. In the lung, GAG support the structure of the interstitium, the subepithelial tissue and the bronchial walls, and are secreted in the airway secretions. Besides maintaining lung tissue structure, GAG also play an important role in lung function as they regulate hydration and water homeostasis, modulate the inflammatory response and influence lung tissue repair and remodelling. However, depending on their size and/or degree of sulphation, and their immobilization or solubilization in the ECM, specific GAG in the lung either live up to their sweet taste/name, supporting normal lung physiology, or they are associated to 'bitter' effects, related to lung pathology. The present review discusses the biological role of GAG in the lung as well as the involvement of these molecules in various respiratory diseases. Given the great structural diversity of GAG, understanding the changes in GAG expression that occur in lung diseases may lead to novel targets for pharmacological intervention in order to prevent and/or to treat a range of lung diseases.
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Affiliation(s)
- Eleni Papakonstantinou
- 2nd Department of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Srinoulprasert Y, Pongtanalert P, Chawengkirttikul R, Chaiyaroj SC. Engagement of Penicillium marneffei conidia with multiple pattern recognition receptors on human monocytes. Microbiol Immunol 2009; 53:162-72. [PMID: 19302527 DOI: 10.1111/j.1348-0421.2008.00102.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
P. marneffei is a thermal dimorphic fungus which causes penicilliosis, an opportunistic infection in immunocompromised patients in South and Southeast Asia. Little is known about the innate immune response to P. marneffei infection. Therefore, the initial response of macrophages to P. marneffei conidia was evaluated by us. Adhesion between monocytes from healthy humans and fungal conidia was examined and found to be specifically inhibited by MAbs against PRR, such as MR, (TLR)1, TLR2, TLR4, TLR6, CD14, CD11a, CD11b, and CD18. To study the consequences of these interactions, cytokines were also examined by ELISA. Binding of P. marneffei conidia to monocytes was significantly inhibited, in a dose-dependent manner, by MAbs against MR, TLR1, TLR2, TLR4, TLR6, CD14, CD11b and CD18. When monocytes were co-cultured with the conidia, there was an increase in the amount of surface CD40 and CD86 expression, together with TNF-alpha and IL-1beta production, compared to unstimulated controls. In assays containing anti-TLR4 or anti-CD14 antibody, reduction in the amount of TNF-alpha released by monocytes stimulated with P. marneffei conidia was detected. In addition, it was found that production of TNF-alpha and IL-1beta from adherent peripheral blood monocytes was partially impaired when heat-inactivated autologous serum, in place of untreated autologous serum, was added to the assay. These results demonstrate that various PRR on human monocytes participate in the initial recognition of P. marneffei conidia, and the engagement of PRR could partly initiate proinflammatory cytokine production.
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Affiliation(s)
- Yuttana Srinoulprasert
- Department of Microbiology, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
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Cooper CR, Vanittanakom N. Insights into the pathogenicity of Penicillium marneffei. Future Microbiol 2008; 3:43-55. [PMID: 18230033 DOI: 10.2217/17460913.3.1.43] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Penicillium marneffei is a significant pathogen of AIDS patients in Southeast Asia. This fungus is unique in that it is the only dimorphic member of the genus. Pathogenesis of P. marneffei requires the saprobic mold form to undergo a morphological change upon tissue invasion. The in vivo form of this fungus reproduces as a fission yeast that capably evades the host immune system. The processes that control these morphological changes, better termed as phase transition, can be replicated in vitro by incubation of the mold form at 37 degrees C. The unidentified molecular mechanisms regulating phase transition in this fungus are now being uncovered using modern methodologies and novel strategies. A better comprehension of these underlying regulatory pathways will provide insight into eukaryotic cellular development as well as the potential factors responsible for infections caused by P. marneffei and other fungi. Such knowledge may lead to better chemotherapeutic interventions of fungal diseases.
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Affiliation(s)
- Chester R Cooper
- Department of Biological Sciences, Youngstown State University, 1 University Plaza, Youngstown, OH 44555, USA.
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Shinmyouzu K, Takahashi T, Ariyoshi W, Ichimiya H, Kanzaki S, Nishihara T. Dermatan sulfate inhibits osteoclast formation by binding to receptor activator of NF-κB ligand. Biochem Biophys Res Commun 2007; 354:447-52. [PMID: 17239341 DOI: 10.1016/j.bbrc.2006.12.221] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2006] [Accepted: 12/31/2006] [Indexed: 11/26/2022]
Abstract
Dermatan sulfate (DS) is a major component of extracellular matrices in mammalian tissues. In the present study, DS demonstrated a high level of binding activity to receptor activator of NF-kappaB ligand (RANKL) and obstructed the binding of RANK to RANKL, determined using a quartz-crystal microbalance (QCM) technique. Further, when mouse bone marrow cells were cultured with RANKL and macrophage colony-stimulating factor, DS suppressed tartrate-resistant acid phosphatase-positive multinucleated cell formation in a dose-dependent manner. In addition, immunoblot analyses revealed that DS reduced the levels of phosphorylation of p38 mitogen-activated protein kinase and extracellular signal-regulated kinase protein in mouse osteoclast progenitor cells stimulated with RANKL. Together, these results indicate that DS regulates osteoclast formation through binding to RANKL and inhibition of signal transduction in osteoclast progenitor cells, suggesting that it has an important role in bone metabolism in pathological conditions.
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Affiliation(s)
- Kouhei Shinmyouzu
- Division of Oral and Maxillofacial Reconstructive Surgery, Department of Oral and Maxillofacial Surgery, Kyushu Dental College, Kitakyushu 803-8580, Japan
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