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Chatrath A, Dey P, Greeley K, Maciel G, Huang L, Heiss C, Black I, Azadi P, Free SJ. Characterization of the Neurospora crassa Galactosaminogalactan Biosynthetic Pathway. Microorganisms 2024; 12:1509. [PMID: 39203353 PMCID: PMC11356417 DOI: 10.3390/microorganisms12081509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 07/17/2024] [Accepted: 07/19/2024] [Indexed: 09/03/2024] Open
Abstract
The Neurospora crassa genome has a gene cluster for the synthesis of galactosaminogalactan (GAG). The gene cluster includes the following: (1) UDP-glucose-4-epimerase to convert UDP-glucose and UDP-N-acetylglucosamine to UDP-galactose and UDP-N-acetylgalactosamine (NCU05133), (2) GAG synthase for the synthesis of an acetylated GAG (NCU05132), (3) GAG deacetylase (/NCW-1/NCU05137), (4) GH135-1, a GAG hydrolase with specificity for N-acetylgalactosamine-containing GAG (NCU05135), and (5) GH114-1, a galactosaminidase with specificity for galactosamine-containing GAG (NCU05136). The deacetylase was previously shown to be a major cell wall glycoprotein and given the name of NCW-1 (non-GPI anchored cell wall protein-1). Characterization of the polysaccharides found in the growth medium from the wild type and the GAG synthase mutant demonstrates that there is a major reduction in the levels of polysaccharides containing galactosamine and N-acetylgalactosamine in the mutant growth medium, providing evidence that the synthase is responsible for the production of a GAG. The analysis also indicates that there are other galactose-containing polysaccharides produced by the fungus. Phenotypic characterization of wild-type and mutant isolates showed that deacetylated GAG from the wild type can function as an adhesin to a glass surface and provides the fungal mat with tensile strength, demonstrating that the deacetylated GAG functions as an intercellular adhesive. The acetylated GAG produced by the deacetylase mutant was found to function as an adhesive for chitin, alumina, celite (diatomaceous earth), activated charcoal, and wheat leaf particulates.
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Affiliation(s)
- Apurva Chatrath
- Department of Biological Sciences, SUNY University at Buffalo, Buffalo, NY 14260, USA; (A.C.); (K.G.)
| | - Protyusha Dey
- Department of Biological Sciences, SUNY University at Buffalo, Buffalo, NY 14260, USA; (A.C.); (K.G.)
| | - Kevin Greeley
- Department of Biological Sciences, SUNY University at Buffalo, Buffalo, NY 14260, USA; (A.C.); (K.G.)
| | - Gabriela Maciel
- Department of Biological Sciences, SUNY University at Buffalo, Buffalo, NY 14260, USA; (A.C.); (K.G.)
| | - Lei Huang
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA; (L.H.)
| | - Christian Heiss
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA; (L.H.)
| | - Ian Black
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA; (L.H.)
| | - Parastoo Azadi
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA; (L.H.)
| | - Stephen J. Free
- Department of Biological Sciences, SUNY University at Buffalo, Buffalo, NY 14260, USA; (A.C.); (K.G.)
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Lei MG, Jorgenson MA, Robbs EJ, Black IM, Archer-Hartmann S, Shalygin S, Azadi P, Lee CY. Characterization of Ssc, an N-acetylgalactosamine-containing Staphylococcus aureus surface polysaccharide. J Bacteriol 2024; 206:e0004824. [PMID: 38712944 PMCID: PMC11112989 DOI: 10.1128/jb.00048-24] [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: 02/11/2024] [Accepted: 04/08/2024] [Indexed: 05/08/2024] Open
Abstract
Whole genome sequencing has revealed that the genome of Staphylococcus aureus possesses an uncharacterized 5-gene operon (SAOUHSC_00088-00092 in strain 8325 genome) that encodes factors with functions related to polysaccharide biosynthesis and export, indicating the existence of a new extracellular polysaccharide species. We designate this locus as ssc for staphylococcal surface carbohydrate. We found that the ssc genes were weakly expressed and highly repressed by the global regulator MgrA. To characterize Ssc, Ssc was heterologously expressed in Escherichia coli and extracted by heat treatment. Ssc was also conjugated to AcrA from Campylobacter jejuni in E. coli using protein glycan coupling technology (PGCT). Analysis of the heat-extracted Ssc and the purified Ssc-AcrA glycoconjugate by tandem mass spectrometry revealed that Ssc is likely a polymer consisting of N-acetylgalactosamine. We further demonstrated that the expression of the ssc genes in S. aureus affected phage adsorption and susceptibility, suggesting that Ssc is surface-exposed. IMPORTANCE Surface polysaccharides play crucial roles in the biology and virulence of bacterial pathogens. Staphylococcus aureus produces four major types of polysaccharides that have been well-characterized. In this study, we identified a new surface polysaccharide containing N-acetylgalactosamine (GalNAc). This marks the first report of GalNAc-containing polysaccharide in S. aureus. Our discovery lays the groundwork for further investigations into the chemical structure, surface location, and role in pathogenesis of this new polysaccharide.
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Affiliation(s)
- Mei G. Lei
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Matthew A. Jorgenson
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Emily J. Robbs
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Ian M. Black
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | | | - Sergei Shalygin
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Parastoo Azadi
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Chia Y. Lee
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
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Sirén H. Research of saccharides and related biocomplexes: A review with recent techniques and applications. J Sep Sci 2024; 47:e2300668. [PMID: 38699940 DOI: 10.1002/jssc.202300668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 02/14/2024] [Accepted: 02/26/2024] [Indexed: 05/05/2024]
Abstract
Saccharides and biocompounds as saccharide (sugar) complexes have various roles and biological functions in living organisms due to modifications via nucleophilic substitution, polymerization, and complex formation reactions. Mostly, mono-, di-, oligo-, and polysaccharides are stabilized to inactive glycosides, which are formed in metabolic pathways. Natural saccharides are important in food and environmental monitoring. Glycosides with various functionalities are significant in clinical and medical research. Saccharides are often studied with the chromatographic methods of hydrophilic interaction liquid chromatography and anion exchange chromatograpy, but also with capillary electrophoresis and mass spectrometry with their on-line coupling systems. Sample preparation is important in the identification of saccharide compounds. The cases discussed here focus on bioscience, clinical, and food applications.
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Affiliation(s)
- Heli Sirén
- Chemicum Building, University of Helsinki, Helsinki, Finland
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2019-2020. MASS SPECTROMETRY REVIEWS 2022:e21806. [PMID: 36468275 DOI: 10.1002/mas.21806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
This review is the tenth update of the original article published in 1999 on the application of matrix-assisted laser desorption/ionization (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2020. Also included are papers that describe methods appropriate to analysis by MALDI, such as sample preparation techniques, even though the ionization method is not MALDI. The review is basically divided into three sections: (1) general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, quantification and the use of arrays. (2) Applications to various structural types such as oligo- and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals, and (3) other areas such as medicine, industrial processes and glycan synthesis where MALDI is extensively used. Much of the material relating to applications is presented in tabular form. The reported work shows increasing use of incorporation of new techniques such as ion mobility and the enormous impact that MALDI imaging is having. MALDI, although invented nearly 40 years ago is still an ideal technique for carbohydrate analysis and advancements in the technique and range of applications show little sign of diminishing.
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Affiliation(s)
- David J Harvey
- Nuffield Department of Medicine, Target Discovery Institute, University of Oxford, Oxford, UK
- Department of Chemistry, University of Oxford, Oxford, Oxfordshire, United Kingdom
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Li S, Zhao S, Christman LM, Washington TL, Gu L. Anti-adhesion capacities of selected cranberry polyphenols and metabolites against P-type and Type-1 fimbriated uropathogenic E. coli using a fluorometric method. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Jana UK, Kango N, Pletschke B. Hemicellulose-Derived Oligosaccharides: Emerging Prebiotics in Disease Alleviation. Front Nutr 2021; 8:670817. [PMID: 34386513 PMCID: PMC8353096 DOI: 10.3389/fnut.2021.670817] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 06/21/2021] [Indexed: 12/11/2022] Open
Abstract
The gut microbiota in the human body is an important component that plays a pivotal role in the ability of the host to prevent diseases and recover from these diseases. If the human microbiome changes for any reason, it affects the overall functioning of the host. Healthy and vigorous gut microbiota require dietary fiber supplementation. Recently, oligosaccharides have been found to play a significant role in the modulation of microbiota. Several such oligosaccharides, i.e., xylooligosaccharides (XOS), mannooligosaccharides (MOS), and arabino-xylooligosaccharides (AXOS), are derived from hemicellulosic macromolecules such as xylan, mannan, and arabino-xylan, respectively. These oligosaccharides serve as substrates for the probiotic production of health-promoting substances (short-chain fatty acids, branched chain amino acids etc.), which confer a variety of health benefits, including the prevention of some dreaded diseases. Among hemicellulose-derived oligosaccharides (HDOs), XOS have been largely explored, whereas, studies on MOS and AXOS are currently underway. HDOs, upon ingestion, help reduce morbidities by lowering populations of harmful or pathogenic bacteria. The ATP-binding cassette (ABC) transporters are mainly utilized for the uptake of oligosaccharides in probiotics. Butyrate generated by the selective fermentation of oligosaccharides, along with other short-chain fatty acids, reduces gut inflammation. Overall, oligosaccharides derived from hemicelluloses show a similar potential as conventional prebiotics and can be supplemented as functional foods. This review summarizes the role of HDOs in the alleviation of autoimmune diseases (inflammatory bowel disease, Crohn's disease), diabetes, urinary tract infection, cardiovascular diseases, and antimicrobial resistance (AMR) through the modulation of the gut microbiota. The mechanism of oligosaccharide utilization and disease mitigation is also explained.
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Affiliation(s)
- Uttam Kumar Jana
- Department of Microbiology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, India
| | - Naveen Kango
- Department of Microbiology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, India
| | - Brett Pletschke
- Department of Biochemistry and Microbiology, Rhodes University, Makhanda, South Africa
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Cai D, Bian Y, Wu S, Ding K. Conformation-Controlled Hydrogen-Bond-Mediated Aglycone Delivery Method for α-Xylosylation. J Org Chem 2021; 86:9945-9960. [PMID: 34292734 DOI: 10.1021/acs.joc.1c00187] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
α-Xylosylated glycans and xylosyl derivatives are biomedically important molecules which show numerous bioactivities against infection, cancer, inflammation, and so on. Lacking an efficient α-xylosylation method, the synthesis of α-xyloside-containing molecules was full of challenges. Herein, a robust method is presented for selective α-xylosylation via combination of a rare conformation-controlled strategy and the hydrogen-bond-mediated aglycone delivery method. Various native branched α-xyloside structures necessitate an orthogonally protected xyloside, and a three-pot preparation method of the xylosyl donor was developed for this novel α-xylosylation method, which was further applied in the first synthesis of the side chain N of xyloglucan. This work provides an efficient α-xylosylation method which would make various α-xyloside structures achievable. The conformation-controlled strategy also has important reference to the chemistry of five-carbon pyranose.
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Affiliation(s)
- Deqin Cai
- University of Chinese Academy of Sciences, Beijing 100049, China.,Glycochemistry and Glycobiology Lab, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Ya Bian
- Glycochemistry and Glycobiology Lab, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,Interdisciplinary Science Research Institute, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Shengjie Wu
- University of Chinese Academy of Sciences, Beijing 100049, China.,Glycochemistry and Glycobiology Lab, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Kan Ding
- University of Chinese Academy of Sciences, Beijing 100049, China.,Glycochemistry and Glycobiology Lab, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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Gato E, Rosalowska A, Martínez-Guitián M, Lores M, Bou G, Pérez A. Anti-adhesive activity of a Vaccinium corymbosum polyphenolic extract targeting intestinal colonization by Klebsiella pneumoniae. Biomed Pharmacother 2020; 132:110885. [PMID: 33113420 DOI: 10.1016/j.biopha.2020.110885] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 11/26/2022] Open
Abstract
The therapeutic effect of Vaccinium polyphenols against uropathogens has been widely studied. Most attention has focused on the antimicrobial activity against P-fimbriated Escherichia coli strains. The present study investigated the anti-adhesive and anti-biofilm activity of a saline extract of blueberry (Vaccinium corymbosum) targeting intestinal colonization by a highly adherent Klebsiella pneumoniae strain. This strain, responsible for a large outbreak of infection in Spain, was selected on the basis of its remarkable capacity to colonize the gastrointestinal tract of patients. The blueberry extract was obtained using a medium scale ambient temperature system (MSAT) in a novel approach based on the use of an aqueous solvent and addition of mineral salts. The polyphenolic content was determined by liquid chromatography coupled to tandem mass-spectrometry (LC-MS/MS). The findings confirmed that the blueberry extract is a rich source of phenolic compounds, including the most polar polyphenols (mostly non-flavonoids), intermediate polarity compounds (flavan-3-ols and most procyanidins) and low polarity compounds (flavonols and anthocyanins). The extract significantly inhibited biofilm formation and bacterial adhesion to HT-29 colorectal cells by a highly adherent multidrug-resistant K. pneumoniae. Although some individual anthocyanidins (malvidin, delphinidin and cyanidin) and one hydroxycinnamic acid (caffeic acid) proved capable of reducing bacterial adhesion, the unfractionated extract was more active than any of the individual polyphenolic compounds. In addition, the extract displayed considerable potential as an intestinal decolonization treatment in a murine model. The study findings demonstrate the potential value of the V. corymbosum extract as an alternative treatment for K. pneumoniae infections.
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Affiliation(s)
- Eva Gato
- Departamento de Microbiología, Complejo Hospitalario Universitario A Coruña (HUAC), Instituto de Investigación Biomédica A Coruña (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Alicja Rosalowska
- Departamento de Química Analítica, Nutrición y Bromatología, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Marta Martínez-Guitián
- Departamento de Microbiología, Complejo Hospitalario Universitario A Coruña (HUAC), Instituto de Investigación Biomédica A Coruña (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Marta Lores
- Departamento de Química Analítica, Nutrición y Bromatología, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - German Bou
- Departamento de Microbiología, Complejo Hospitalario Universitario A Coruña (HUAC), Instituto de Investigación Biomédica A Coruña (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Astrid Pérez
- Departamento de Microbiología, Complejo Hospitalario Universitario A Coruña (HUAC), Instituto de Investigación Biomédica A Coruña (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain.
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Scharf B, Schmidt TJ, Rabbani S, Stork C, Dobrindt U, Sendker J, Ernst B, Hensel A. Antiadhesive natural products against uropathogenic E. coli: What can we learn from cranberry extract? JOURNAL OF ETHNOPHARMACOLOGY 2020; 257:112889. [PMID: 32311481 DOI: 10.1016/j.jep.2020.112889] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/14/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Extracts from Cranberry fruits (Vaccinium macrocarpon) are traditionally used against urinary tract infections, mainly due to antiadhesive activity against uropathogenic E. coli (UPEC), but the exact mode of action and compounds, responsible for the activity, are unknown. AIM OF THE STUDY i. To investigate if cranberry extract acts only by a single component or must be assessed as a multi-active-compound preparation; ii to screen isolated cranberry-related natural products under in vitro conditions to pinpoint natural products with antiadhesive effects against UPEC, followed by in silico calculations (QSAR) to predict potential antiadhesive compounds; iii. investigations by using urine samples from cranberry treated volunteers for evaluation on the bacterial transcriptome and the mannose-binding side of FimH, iv. to investigate if besides Tamm Horsfall Protein induction in the kidney, the extract acts also directly against UPEC. MATERIAL AND METHODS Antiadhesive activity of 105 compounds was determined by flow cytometric adhesion assay (UPEC UTI89 on T24 bladder cells). Urine samples from 16 volunteers treated with cranberry extract (p.o., 7 days, 900 mg/day) were used for ex vivo testing concerning influence on the bacterial transcriptome (Illumina RNA-seq) and interaction with the mannose binding domain of type-1 fimbriae. RESULTS i. The antiadhesive effect of cranberry extract cannot be attributed to a single compound or to a single fraction. ii. Unglycosylated flavones and flavonols with bulky substitution of the B ring contribute to the antiadhesive activity. 3'-8″-biflavones and flavolignans (not related to cranberry fruits) were identified as potent antiadhesive compounds against UPEC. iii. QSAR yielded a model with good statistical performance and sufficient internal and external predictive ability. iv. Urine samples from male cranberry-treated volunteers indicated significant interaction with the mannose binding domain of type-1 fimbriae, which correlated with the amount of Tamm-Horsfall Protein in the test samples. v Cranberry extract did not influence the UPEC transcriptome; gene expression of bacterial adhesins (P-, S-fimbrae, curli) was not influenced by the urine samples, while a slight, but non-significant upregulation of type 1 fimbriae was observed. CONCLUSIONS B-ring substituted flavones and flavonols from cranberry contribute to the antiadhesive activity against UPEC by inhibition of the FimH-mediated interaction with the host cell bladder epithelium.
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Affiliation(s)
- Birte Scharf
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Münster, Germany
| | - Thomas J Schmidt
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Münster, Germany
| | - Said Rabbani
- University of Basel, Department Pharmaceutical Sciences, Molecular Pharmacy, Basel, Switzerland
| | - Christoph Stork
- University Hospital Münster, Institute of Hygiene, Münster, Germany
| | - Ulrich Dobrindt
- University Hospital Münster, Institute of Hygiene, Münster, Germany
| | - Jandirk Sendker
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Münster, Germany
| | - Beat Ernst
- University of Basel, Department Pharmaceutical Sciences, Molecular Pharmacy, Basel, Switzerland
| | - Andreas Hensel
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Münster, Germany.
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Coleman CM, Ferreira D. Oligosaccharides and Complex Carbohydrates: A New Paradigm for Cranberry Bioactivity. Molecules 2020; 25:E881. [PMID: 32079271 PMCID: PMC7070526 DOI: 10.3390/molecules25040881] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/04/2020] [Accepted: 02/14/2020] [Indexed: 02/07/2023] Open
Abstract
Cranberry is a well-known functional food, but the compounds directly responsible for many of its reported health benefits remain unidentified. Complex carbohydrates, specifically xyloglucan and pectic oligosaccharides, are the newest recognized class of biologically active compounds identified in cranberry materials. Cranberry oligosaccharides have shown similar biological properties as other dietary oligosaccharides, including effects on bacterial adhesion, biofilm formation, and microbial growth. Immunomodulatory and anti-inflammatory activity has also been observed. Oligosaccharides may therefore be significant contributors to many of the health benefits associated with cranberry products. Soluble oligosaccharides are present at relatively high concentrations (~20% w/w or greater) in many cranberry materials, and yet their possible contributions to biological activity have remained unrecognized. This is partly due to the inherent difficulty of detecting these compounds without intentionally seeking them. Inconsistencies in product descriptions and terminology have led to additional confusion regarding cranberry product composition and the possible presence of oligosaccharides. This review will present our current understanding of cranberry oligosaccharides and will discuss their occurrence, structures, ADME, biological properties, and possible prebiotic effects for both gut and urinary tract microbiota. Our hope is that future investigators will consider these compounds as possible significant contributors to the observed biological effects of cranberry.
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Affiliation(s)
- Christina M. Coleman
- Department of BioMolecular Sciences, Division of Pharmacognosy, and the Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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11
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Sun J, Deering RW, Peng Z, Najia L, Khoo C, Cohen PS, Seeram NP, Rowley DC. Pectic Oligosaccharides from Cranberry Prevent Quiescence and Persistence in the Uropathogenic Escherichia coli CFT073. Sci Rep 2019; 9:19590. [PMID: 31862919 PMCID: PMC6925298 DOI: 10.1038/s41598-019-56005-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 12/04/2019] [Indexed: 11/26/2022] Open
Abstract
Urinary tract infections (UTIs) caused by Escherichia coli create a large burden on healthcare and frequently lead to recurrent infections. Part of the success of E. coli as an uropathogenic bacterium can be attributed to its ability to form quiescent intracellular reservoirs in bladder cells and its persistence after antibiotic treatment. Cranberry juice and related products have been used for the prevention of UTIs with varying degrees of success. In this study, a group of cranberry pectic oligosaccharides (cPOS) were found to both inhibit quiescence and reduce the population of persister cells formed by the uropathogenic strain, CFT073. This is the first report detailing constituents of cranberry with the ability to modulate these important physiological aspects of uropathogenic E. coli. Further studies investigating cranberry should be keen to include oligosaccharides as part of the ‘active’ cocktail of chemical compounds.
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Affiliation(s)
- Jiadong Sun
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, 02881, USA.,Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, 20814, USA
| | - Robert W Deering
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, 02881, USA
| | - Zhiyuan Peng
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, 02881, USA
| | - Laila Najia
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, 02881, USA
| | - Christina Khoo
- Ocean Spray Cranberries, Inc., One Ocean Spray Drive, Lakeville-Middleboro, MA, 02349, USA
| | - Paul S Cohen
- Department of Cell and Molecular Biology, University of Rhode Island, Kingston, RI, 02881, USA
| | - Navindra P Seeram
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, 02881, USA
| | - David C Rowley
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, 02881, USA.
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