Glycans: Molecules at the Interface of Immunity and Disease

Glycans: Molecules at the Interface of Immunity and Disease PDF Author: Shoib Sarwar Siddiqui
Publisher: Frontiers Media SA
ISBN: 2832542980
Category : Science
Languages : en
Pages : 154

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Book Description
Glycans are complex, multi-unit carbohydrate structures that cover the surfaces of cells and guide cellular interactions. Glycobiology studies the synthesis, structure, function, regulation, and evolution of glycans and glycan-binding molecules. Glycans are synthesized and added as modifications to proteins, lipids, and RNA. Though they are often associated with functions outside of cells (glycoproteins and glycolipids are most often extracellular or secreted), glycans are also active within cells. Glycans are known to have diverse physiological roles ranging from cell adhesion (maintaining tissue structure and integrity) to molecular recognition (marking position during development, or self-identity in immunity and reproduction). Glycans also regulate cellular activity and physiological state. The families of proteins that bind glycans are called lectins. Glycans and lectins are vital in many diseases such as cancer, neurodegeneration, inflammation, allergies, asthma, and autoimmune disorders.

Glycans: Molecules at the Interface of Immunity and Disease

Glycans: Molecules at the Interface of Immunity and Disease PDF Author: Shoib Sarwar Siddiqui
Publisher: Frontiers Media SA
ISBN: 2832542980
Category : Science
Languages : en
Pages : 154

Get Book Here

Book Description
Glycans are complex, multi-unit carbohydrate structures that cover the surfaces of cells and guide cellular interactions. Glycobiology studies the synthesis, structure, function, regulation, and evolution of glycans and glycan-binding molecules. Glycans are synthesized and added as modifications to proteins, lipids, and RNA. Though they are often associated with functions outside of cells (glycoproteins and glycolipids are most often extracellular or secreted), glycans are also active within cells. Glycans are known to have diverse physiological roles ranging from cell adhesion (maintaining tissue structure and integrity) to molecular recognition (marking position during development, or self-identity in immunity and reproduction). Glycans also regulate cellular activity and physiological state. The families of proteins that bind glycans are called lectins. Glycans and lectins are vital in many diseases such as cancer, neurodegeneration, inflammation, allergies, asthma, and autoimmune disorders.

The Role of Glycans in Immune Cell Functions

The Role of Glycans in Immune Cell Functions PDF Author: Jasmeen S. Merzaban
Publisher: Frontiers Media SA
ISBN: 2889636968
Category :
Languages : en
Pages : 205

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Book Description
Glycans represent a major constituency of post-translational modifications that occur on most, if not all, proteins. Whether on mammalian or invertebrate cell surfaces, they exist as sugar chain moieties designed from the exquisite and coordinated activity of cell-specific glycosylation. Some of the more common glycan structures are linked to cell surface polypeptides via an asparagine (N)-linked residue or a serine/threonine (O)-linked residue, along with a notable contingent found linked to ceramides in the lipid bilayer known as glycosphingolipids. These glycans can associate with complementary glycan-binding proteins (GBP) or lectins to mediate and translate this carbohydrate recognition to cell function. In immunity, there is increasing evidence that precise immune cell glycans are recognized by corresponding GBPs in a cell-intrinsic or -extrinsic manner. Unique carbohydrate recognition domains within GBPs are comprised of precisely spaced amino acid functional groups that allow for selective engagement of a particular glycan target. This structure-function relationship is present in immune signaling pathways, whereby glycans and GBPs on the surface of immune cells (and non-immune cells) help control processes such as immune cell activation, recognition of pathogens, suppression and tissue-specific migration. The diversity of glycan structures and glycosylation among individual immune cell subsets is controlled by the expression of genes involved in glycan biosynthesis including glycosyltransferases, glycosidases, glycan-precursor biosynthetic enzymes and nucleotide-sugar transporters. These genes represent more than 3% of the human genome, and cell-specific expression of these genes dictates a cell’s glycan repertoire, ultimately influencing its molecular interactions with GBPs. Altogether, these emerging lines of investigation highlight the regulatory capacity of glycans in immune health and disease, which in turn, pave the way for novel diagnostic, prognostic, and therapeutic strategies.

Transforming Glycoscience

Transforming Glycoscience PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309260868
Category : Science
Languages : en
Pages : 171

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Book Description
A new focus on glycoscience, a field that explores the structures and functions of sugars, promises great advances in areas as diverse as medicine, energy generation, and materials science, this report finds. Glycans-also known as carbohydrates, saccharides, or simply as sugars-play central roles in many biological processes and have properties useful in an array of applications. However, glycans have received little attention from the research community due to a lack of tools to probe their often complex structures and properties. Transforming Glycoscience: A Roadmap for the Future presents a roadmap for transforming glycoscience from a field dominated by specialists to a widely studied and integrated discipline, which could lead to a more complete understanding of glycans and help solve key challenges in diverse fields.

Glycobiology of Innate Immunology

Glycobiology of Innate Immunology PDF Author: Cheorl-Ho Kim
Publisher: Springer Nature
ISBN: 9811690812
Category : Science
Languages : en
Pages : 673

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Book Description
This book presents the latest knowledge and the most recent research results on glycobiology of innate immunology. Innate immunity is the crucial part of the immunological defense system that exerts their distinct functions through binding to certain functional glycoproteins. They play a role in various human diseases and also function against microbial invaders and self-associated molecular patterns. Co-regulated expression of glycan-binding is associated with many biological components such as cellular oncotransformation, phenotype change, neuronal or embryonic development, regulation of cell division, cell–cell interaction, cell attachment, adhesion, and motility, and intracellular signaling via protein–carbohydrate or carbohydrate–carbohydrate interactions. This book opens by providing the key background on glycans in innate immunity and its mechanisms behind the Dendritic cell interactions during infection and inflammation are examined in depth, and the concluding chapter is devoted to signaling tumor immunotherapy. Up-to-date information is then presented on all aspects of glycan structure-recognizing signaling. The book should assist in the further development of new strategies against emerging infectious agents and intractable diseases.

Addressing Roles for Glycans in Immunology using Chemical Biology

Addressing Roles for Glycans in Immunology using Chemical Biology PDF Author: Matthew S. Macauley
Publisher: Frontiers Media SA
ISBN: 2889638669
Category :
Languages : en
Pages : 175

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Book Description


Glycans: Masters of Immunity, From Cancers to Inflammatory Disease

Glycans: Masters of Immunity, From Cancers to Inflammatory Disease PDF Author: Richard Beatson
Publisher: Frontiers Media SA
ISBN: 2889767906
Category : Medical
Languages : en
Pages : 151

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Book Description


Essentials of Glycobiology

Essentials of Glycobiology PDF Author: Ajit Varki
Publisher: CSHL Press
ISBN: 9780879696818
Category : Medical
Languages : en
Pages : 694

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Book Description
Sugar chains (glycans) are often attached to proteins and lipids and have multiple roles in the organization and function of all organisms. "Essentials of Glycobiology" describes their biogenesis and function and offers a useful gateway to the understanding of glycans.

Antibody Glycosylation

Antibody Glycosylation PDF Author: Marija Pezer
Publisher: Springer Nature
ISBN: 3030769127
Category : Medical
Languages : en
Pages : 588

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Book Description
This book summarizes recent advances in antibody glycosylation research. Covering major topics relevant for immunoglobulin glycosylation - analytical methods, biosynthesis and regulation, modulation of effector functions - it provides new perspectives for research and development in the field of therapeutic antibodies, biomarkers, vaccinations, and immunotherapy. Glycans attached to both variable and constant regions of antibodies are known to affect the antibody conformation, stability, and effector functions. Although it focuses on immunoglobulin G (IgG), the most explored antibody in this context, and unravels the natural phenomena resulting from the mixture of IgG glycovariants present in the human body, the book also discusses other classes of human immunoglobulins, as well as immunoglobulins produced in other species and production systems. Further, it reviews the glycoanalytical methods applied to antibodies and addresses a range of less commonly explored topics, such as automatization and bioinformatics aspects of high-throughput antibody glycosylation analysis. Lastly, the book highlights application areas ranging from the ones already benefitting from antibody glycoengineering (such as monoclonal antibody production), to those still in the research stages (such as exploration of antibody glycosylation as a clinical or biological age biomarker), and the potential use of antibody glycosylation in the optimization of vaccine production and immunization protocols. Summarizing the current knowledge on the broad topic of antibody glycosylation and its therapeutic and biomarker potential, this book will appeal to a wide biomedical readership in academia and industry alike. Chapter 4 is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

Oral Biofilms

Oral Biofilms PDF Author: S. Eick
Publisher: Karger Medical and Scientific Publishers
ISBN: 3318068527
Category : Medical
Languages : en
Pages : 247

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Book Description
Biofilms are highly organized polymicrobial communities that are embedded in an extracellular matrix and formed on natural and artificial surfaces. In the oral cavity, biofilms are formed not only on natural teeth, but also on restorative materials, prosthetic constructions, and dental implants. Oral diseases like caries, gingivitis, periodontitis, and also pulp inflammation are associated with biofilms. This publication is an up-to-date overview on oral biofilms from different clinically relevant perspectives. Experts comprising basic researchers and clinicians report on recent research relating to biofilms - from general summaries to recommendations for daily clinical work. This book covers all aspects of oral biofilms, including models used in the laboratory, biofilms in dental water unit lines, periodontal and peri-implant biofilms, caries-related biofilms, halitosis, endodontic biofilms, and Candida infections, as well as biofilms on dental materials and on orthodontic appliances. Several chapters deal with anti-biofilm therapy, from the efficacy of mechanical methods and the use of antimicrobials, to alternative concepts. This publication is particularly recommended to dental medicine students, practitioners, other oral healthcare professionals, and scientists with an interest in translational research on biofilms.

Oxford Textbook of Rheumatology

Oxford Textbook of Rheumatology PDF Author: Philip Conaghan
Publisher: Oxford University Press
ISBN: 0199642486
Category : Medical
Languages : en
Pages : 1553

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Book Description
A strong clinical emphasis is present throughout this volume from the first section of commonly presenting problems through to the section addressing problems shared with a range of other clinical sub-specialties.