A glycobiology review: carbohydrates, lectins, and implications in cancer therapeutics
TL;DR: This review is intended for general readers who would like a basic foundation in carbohydrate structure and function, lectin biology, and the implications of glycobiology in human health and disease, particularly in cancer therapeutics.
About: This article is published in Acta Histochemica.The article was published on 2011-05-01 and is currently open access. It has received 389 citations till now. The article focuses on the topics: Glycobiology.
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TL;DR: How coronaviruses have evolved their complex receptor recognition pattern is discussed and important principles that govern receptor recognition by viruses in general are summarized.
Abstract: Receptor recognition by viruses is the first and essential step of viral infections of host cells. It is an important determinant of viral host range and cross-species infection and a primary target for antiviral intervention. Coronaviruses recognize a variety of host receptors, infect many hosts, and are health threats to humans and animals. The receptor-binding S1 subunit of coronavirus spike proteins contains two distinctive domains, the N-terminal domain (S1-NTD) and the C-terminal domain (S1-CTD), both of which can function as receptor-binding domains (RBDs). S1-NTDs and S1-CTDs from three major coronavirus genera recognize at least four protein receptors and three sugar receptors and demonstrate a complex receptor recognition pattern. For example, highly similar coronavirus S1-CTDs within the same genus can recognize different receptors, whereas very different coronavirus S1-CTDs from different genera can recognize the same receptor. Moreover, coronavirus S1-NTDs can recognize either protein or sugar receptors. Structural studies in the past decade have elucidated many of the puzzles associated with coronavirus-receptor interactions. This article reviews the latest knowledge on the receptor recognition mechanisms of coronaviruses and discusses how coronaviruses have evolved their complex receptor recognition pattern. It also summarizes important principles that govern receptor recognition by viruses in general.
459 citations
Cites background from "A glycobiology review: carbohydrate..."
...Sugars decorate many proteins and fats on cell surfaces and function in many biological processes such as immunity and cell-cell communication (57, 74, 75)....
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TL;DR: Mucin biology is dynamic and the processes of degradation and turnover are well integrated with biosynthesis to maintain a continuous mucosal protection against all external aggressive forces.
389 citations
TL;DR: This review will first describe the rationale behind these antibody mimics, and the different synthesis methods that have been employed for the preparation of MIPs destined for in vitro and in vivo targeting and bioimaging of cancer biomarkers, an emerging and fast-growing area of M IP applications.
Abstract: Molecularly imprinted polymers (MIPs) are tailor-made chemical receptors that recognize and bind target molecules with a high affinity and selectivity. MIPs came into the spotlight in 1993 when they were dubbed "antibody mimics," and ever since, they have been widely studied for the extraction or trapping of chemical pollutants, in immunoassays, and for the design of sensors. Owing to novel synthesis strategies resulting in more biocompatible MIPs in the form of soluble nanogels, these synthetic antibodies have found favor in the biomedical domain since 2010, when for the first time, they were shown to capture and eliminate a toxin in live mice. This review, covering the years 2015-2020, will first describe the rationale behind these antibody mimics, and the different synthesis methods that have been employed for the preparation of MIPs destined for in vitro and in vivo targeting and bioimaging of cancer biomarkers, an emerging and fast-growing area of MIP applications. MIPs have been synthesized for targeting and visualizing glycans and protein-based cell receptors overexpressed in certain diseases, which are well-known biomarkers for example for tumors. When loaded with drugs, the MIPs could locally kill the tumor cells, making them efficient therapeutic agents. We will end the review by reporting how MIPs themselves can act as therapeutics by inhibiting cancer growth. These works mark a new opening in the use of MIPs for antibody therapy and even immunotherapy, as materials of the future in nanomedicine.
230 citations
TL;DR: This work focuses on the mechanisms by which EVs dock and transfer their contents to cells, and highlights how these findings may provide new avenues for therapeutic intervention.
209 citations
TL;DR: This review summarises currently utilised glycoprotein biomarkers and novel glycosylation-based biomarkers from the serum glycoproteome under investigation as cancer diagnostics and for monitoring and prognostics and includes details of recent high throughput and other emerging glycoanalytical techniques.
Abstract: Cancer is the second most common cause of death in developed countries with approximately 14 million newly diagnosed individuals and over 6 million cancer-related deaths in 2012. Many cancers are discovered at a more advanced stage but better survival rates are correlated with earlier detection. Current clinically approved cancer biomarkers are most effective when applied to patients with widespread cancer. Single biomarkers with satisfactory sensitivity and specificity have not been identified for the most common cancers and some biomarkers are ineffective for the detection of early stage cancers. Thus, novel biomarkers with better diagnostic and prognostic performance are required. Aberrant protein glycosylation is well known hallmark of cancer and represents a promising source of potential biomarkers. Glycoproteins enter circulation from tissues or blood cells through active secretion or leakage and patient serum is an attractive option as a source for biomarkers from a clinical and diagnostic perspective. A plethora of technical approaches have been developed to address the challenges of glycosylation structure detection and determination. This review summarises currently utilised glycoprotein biomarkers and novel glycosylation-based biomarkers from the serum glycoproteome under investigation as cancer diagnostics and for monitoring and prognostics and includes details of recent high throughput and other emerging glycoanalytical techniques.
163 citations
Cites background from "A glycobiology review: carbohydrate..."
...lectins, carbohydrate-binding proteins which are highly specific for various carbohydrate moieties [18], are also commonly employed for the detection of abnormal structures and the proportion of alterations can be quantified [14, 19–21]....
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References
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TL;DR: Gut flora might be an essential factor in certain pathological disorders, including multisystem organ failure, colon cancer, and inflammatory bowel diseases, and Probiotics and prebiotics are known to have a role in prevention or treatment of some diseases.
3,184 citations
1,480 citations
TL;DR: Emerging data indicate that O-GlcNAc glycosylation has a role in the aetiology of diabetes and neurodegeneration.
Abstract: All animals and plants dynamically attach and remove O-linked β-N-acetylglucosamine (O-GlcNAc) at serine and threonine residues on myriad nuclear and cytoplasmic proteins. O-GlcNAc cycling, which is tightly regulated by the concerted actions of two highly conserved enzymes, serves as a nutrient and stress sensor. On some proteins, O-GlcNAc competes directly with phosphate for serine/threonine residues. Glycosylation with O-GlcNAc modulates signalling, and influences protein expression, degradation and trafficking. Emerging data indicate that O-GlcNAc glycosylation has a role in the aetiology of diabetes and neurodegeneration.
1,212 citations
TL;DR: This work has shown thatectins on cell surfaces mediate cell-cell interactions by combining with complementary carbohydrates on apposing cells to form lectins, which play a key role in the control of various normal and pathological processes in living organisms.
Abstract: Lectins on cell surfaces mediate cell-cell interactions by combining with complementary carbohydrates on apposing cells. They play a key role in the control of various normal and pathological processes in living organisms.
1,158 citations
TL;DR: Aberrant glycosylation as such may be the basis of inappropriate cell/cell and cell/matrix interactions that may be reflected in the abnormal cell social behavior of tumor cells, such as uncontrolled cell growth, invasiveness, and metastatic potential.
Abstract: Publisher Summary Aberrant glycosylation is the most common phenomenon associated with oncogenic transformation expressed in cell membranes of animal and human cancer cells. Such aberrant structures at the surface membranes may well be effective targets in prevention, diagnosis, and treatment of human cancer. Many of the aberrant glycosylation products can be recognized by specific MAbs as tumor-associated carbohydrate antigens. Many of these antigens have been identified as carbohydrates, thus there is increasing evidence that essentially all human cancers are characterized by aberrant glycosylation. Aberrant glycosylation as such may be the basis of inappropriate cell/cell and cell/matrix interactions that may be reflected in the abnormal cell social behavior of tumor cells, such as uncontrolled cell growth, invasiveness, and metastatic potential. Whatever the genetic or epigenetic basis of expression of aberrant glycosylation is, the phenomenon is of crucial importance in understanding the antisocial behavior of tumor cells as well as in practical applications in diagnosis and treatment of human cancer.
1,086 citations