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Ma X, Li M, Wang X, Qi G, Wei L, Zhang D. Sialylation in the gut: From mucosal protection to disease pathogenesis. Carbohydr Polym 2024; 343:122471. [PMID: 39174097 DOI: 10.1016/j.carbpol.2024.122471] [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: 05/07/2024] [Revised: 06/19/2024] [Accepted: 07/07/2024] [Indexed: 08/24/2024]
Abstract
Sialylation, a crucial post-translational modification of glycoconjugates, entails the attachment of sialic acid (SA) to the terminal glycans of glycoproteins and glycolipids through a tightly regulated enzymatic process involving various enzymes. This review offers a comprehensive exploration of sialylation within the gut, encompassing its involvement in mucosal protection and its impact on disease progression. The sialylation of mucins and epithelial glycoproteins contributes to the integrity of the intestinal mucosal barrier. Furthermore, sialylation regulates immune responses in the gut, shaping interactions among immune cells, as well as their activation and tolerance. Additionally, the gut microbiota and gut-brain axis communication are involved in the role of sialylation in intestinal health. Altered sialylation patterns have been implicated in various intestinal diseases, including inflammatory bowel disease (IBD), colorectal cancer (CRC), and other intestinal disorders. Emerging research underscores sialylation as a promising avenue for diagnostic, prognostic, and therapeutic interventions in intestinal diseases. Potential strategies such as sialic acid supplementation, inhibition of sialidases, immunotherapy targeting sialylated antigens, and modulation of sialyltransferases have been utilized in the treatment of intestinal diseases. Future research directions will focus on elucidating the molecular mechanisms underlying sialylation alterations, identifying sialylation-based biomarkers, and developing targeted interventions for precision medicine approaches.
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Affiliation(s)
- Xueni Ma
- Key Laboratory of Digestive Diseases, Lanzhou University Second Hospital, Lanzhou, China; The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Muyang Li
- Key Laboratory of Digestive Diseases, Lanzhou University Second Hospital, Lanzhou, China; The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Xiaochun Wang
- Department of Gastroenterology, Gansu Provincial Hospital, Lanzhou, China
| | - Guoqing Qi
- Department of Gastroenterology, Lanzhou University Second Hospital, Lanzhou, China
| | - Lina Wei
- Department of Gastroenterology, Lanzhou University Second Hospital, Lanzhou, China
| | - Dekui Zhang
- Key Laboratory of Digestive Diseases, Lanzhou University Second Hospital, Lanzhou, China; Department of Gastroenterology, Lanzhou University Second Hospital, Lanzhou, China.
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2
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Xu Y, Ren S, Wang H, Qin Y, Liu T, Sun C, Xiao Y, Shao B, Zhang J, Chen Q, Zhao P, Yang G, Liu X, Wang H. Endometrial regeneration cell-derived exosomes loaded with siSLAMF6 inhibit cardiac allograft rejection through the suppression of desialylation modification. Cell Mol Biol Lett 2024; 29:128. [PMID: 39354345 PMCID: PMC11443917 DOI: 10.1186/s11658-024-00645-y] [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: 05/05/2024] [Accepted: 09/13/2024] [Indexed: 10/03/2024] Open
Abstract
BACKGROUNDS Acute transplant rejection is a major component of poor prognoses for organ transplantation. Owing to the multiple complex mechanisms involved, new treatments are still under exploration. Endometrial regenerative cells (ERCs) have been widely used in various refractory immune-related diseases, but the role of ERC-derived exosomes (ERC-Exos) in alleviating transplant rejection has not been extensively studied. Signaling lymphocyte activation molecule family 6 (SLAMF6) plays an important role in regulating immune responses. In this study, we explored the main mechanism by which ERC-Exos loaded with siSLAMF6 can alleviate allogeneic transplant rejection. METHODS C57BL/6 mouse recipients of BALB/c mouse kidney transplants were randomly divided into four groups and treated with exosomes. The graft pathology was evaluated by H&E staining. Splenic and transplanted heart immune cell populations were analyzed by flow cytometry. Recipient serum cytokine profiles were determined by enzyme-linked immunosorbent assay (ELISA). The proliferation and differentiation capacity of CD4+ T cell populations were evaluated in vitro. The α-2,6-sialylation levels in the CD4+ T cells were determined by SNA blotting. RESULTS In vivo, mice treated with ERC-siSLAMF6 Exo achieved significantly prolonged allograft survival. The serum cytokine profiles of the recipients were significantly altered in the ERC-siSLAMF6 Exo-treated recipients. In vitro, we found that ERC-siSLAMF6-Exo considerably downregulated α-2,6-sialyltransferase (ST6GAL1) expression in CD4+ T cells, and significantly reduced α-2,6-sialylation levels. Through desialylation, ERC-siSLAMF6 Exo therapy significantly decreased CD4+ T cell proliferation and inhibited CD4+ T cell differentiation into Th1 and Th17 cells while promoting regulatory T cell (Treg) differentiation. CONCLUSIONS Our study indicated that ERC-Exos loaded with siSLAMF6 reduce the amount of sialic acid connected to α-2,6 at the end of the N-glycan chain on the CD4+ T cell surface, increase the number of therapeutic exosomes endocytosed into CD4+ T cells, and inhibit the activation of T cell receptor signaling pathways, which prolongs allograft survival. This study confirms the feasibility of using ERC-Exos as natural carriers combined with gene therapy, which could be used as a potential therapeutic strategy to alleviate allograft rejection.
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Affiliation(s)
- Yini Xu
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Shaohua Ren
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Hongda Wang
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Yafei Qin
- Department of Vascular Surgery, Henan Provincial People's Hospital, The Affiliated People's Hospital of Zhengzhou University, Zhengzhou, 450003, Henan, China
| | - Tong Liu
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Chenglu Sun
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Yiyi Xiao
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Bo Shao
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Jingyi Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Qiang Chen
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Pengyu Zhao
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Guangmei Yang
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Xu Liu
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Hao Wang
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.
- Tianjin General Surgery Institute, 154 Anshan Road, Heping District, Tianjin, 300052, China.
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, 154 Anshan Road, Heping District, Tianjin, 300052, China.
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3
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Zhu W, Zhou Y, Guo L, Feng S. Biological function of sialic acid and sialylation in human health and disease. Cell Death Discov 2024; 10:415. [PMID: 39349440 PMCID: PMC11442784 DOI: 10.1038/s41420-024-02180-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 09/08/2024] [Accepted: 09/12/2024] [Indexed: 10/02/2024] Open
Abstract
Sialic acids are predominantly found at the terminal ends of glycoproteins and glycolipids and play key roles in cellular communication and function. The process of sialylation, a form of post-translational modification, involves the covalent attachment of sialic acid to the terminal residues of oligosaccharides and glycoproteins. This modification not only provides a layer of electrostatic repulsion to cells but also serves as a receptor for various biological signaling pathways. Sialylation is involved in several pathophysiological processes. Given its multifaceted involvement in cellular functions, sialylation presents a promising avenue for therapeutic intervention. Current studies are exploring agents that target sialic acid residues on sialoglycans or the sialylation process. These efforts are particularly focused on the fields of cancer therapy, stroke treatment, antiviral strategies, and therapies for central nervous system disorders. In this review, we aimed to summarize the biological functions of sialic acid and the process of sialylation, explore their roles in various pathophysiological contexts, and discuss their potential applications in the development of novel therapeutics.
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Affiliation(s)
- Wengen Zhu
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yue Zhou
- Department of Ophthalmology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Linjuan Guo
- Department of Cardiology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China.
| | - Shenghui Feng
- Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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4
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Wu Z, Li M, Wu J, Jin S, Xu Y, Jin J, Wu Y. Characterization of the molecular role that ST3GAL1 plays in porcine susceptibility to E. coli F18 infection. Int J Biol Macromol 2024; 276:133959. [PMID: 39029847 DOI: 10.1016/j.ijbiomac.2024.133959] [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: 04/29/2024] [Revised: 06/09/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
Escherichia coli F18 (E. coli F18) is the main cause of bacterial diarrhea in piglets. Previous transcriptome reported that ST3GAL1 was associated to E. coli F18 infection. However, its role in mediating the resistance to E. coli F18 remains elusive. Here, we revealed that the downregulation of ST3GAL1 expression contributed to the enhancement of E. coli F18 resistance in IPEC-J2 cells. Bisulfite sequencing identified 26 methylated CpG sites in the ST3GAL1 core promoter. Among these, the ST3GAL1 mRNA levels significantly correlated with methylation levels of the mC-8 site in the specificity protein 1 (SP1) transcription factor (P < 0.01). Interestingly, ST3GAL1 expression may enhances the immune response by activating TLRs signaling, meanwhile decreases the production of the E. coli F18 receptor by inhibiting glycosphingolipid biosynthesis signaling, thereby leading to enhance the resistance to E. coli F18 infection. Besides, low ST3GAL1 expression may increase E. coli resistance by reducing sialylation. Together, these results support the status of ST3GAL1 as a viable target for efforts to modulate E. coli F18 susceptibility, offering a theoretical foundation for the use of this gene as a key biomarker for molecular breeding to improve porcine disease resistance.
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Affiliation(s)
- Zhengchang Wu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou 225009, Jiangsu, China; College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Meiqi Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Jiayun Wu
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou 225300, China
| | - Shuting Jin
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Yifan Xu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Jian Jin
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China.
| | - Yanqing Wu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou 225009, Jiangsu, China.
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5
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Radwan M, Guo T, Carvajal EG, Bekkema BAR, Cairo CW. Bioisosteres at C9 of 2-Deoxy-2,3-didehydro- N-acetyl Neuraminic Acid Identify Selective Inhibitors of NEU3. J Med Chem 2024; 67:13594-13603. [PMID: 39101748 DOI: 10.1021/acs.jmedchem.3c02186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
Human neuraminidases play critical roles in many physiological and pathological processes. Humans have four isoenzymes of NEU, making selective inhibitors important tools to investigate the function of individual isoenzymes. A typical scaffold for NEU inhibitors is 2-deoxy-2,3-didehydro-N-acetylneuraminic acid (DANA) where C9 modifications can be critical for potency and selectivity against human NEU. To design improved DANA analogues, we generated a library of compounds with either a short alkyl chain or a biphenyl substituent linked to the C9 position through one of six amide bioisosteres. Bioisostere linkers included triazole, urea, thiourea, carbamate, thiocarbamate, and sulfonamide groups. Within this library, we identified a C9 biphenyl carbamate derivative (963) that showed high selectivity and potency for NEU3 (Ki = 0.12 ± 0.01 μM). In contrast, NEU1 and NEU4 isoenzymes preferred amide and triazole linkers, respectively. Finally, analogues with urea, sulfonamide, and amide linkers showed enhanced inhibitory activity for a bacterial NEU, NanI from Clostridium perfringens.
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Affiliation(s)
- Mostafa Radwan
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Tianlin Guo
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Elisa G Carvajal
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Benjamin A R Bekkema
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Christopher W Cairo
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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6
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Zhao J, Ge X, Li T, Yang M, Zhao R, Yan S, Wu H, Liu Y, Wang K, Xu Z, Jia J, Liu L, Dou T. Integrating metabolomics and transcriptomics to analyze the differences of breast muscle quality and flavor formation between Daweishan mini chicken and broiler. Poult Sci 2024; 103:103920. [PMID: 38909504 PMCID: PMC11253666 DOI: 10.1016/j.psj.2024.103920] [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: 03/24/2024] [Revised: 05/23/2024] [Accepted: 05/28/2024] [Indexed: 06/25/2024] Open
Abstract
The quality and flavor of chicken are affected by muscle metabolites and related regulatory genes, and the molecular regulation mechanism of meat quality is different among different breeds of chicken. In this study, 40 one-day-old Daweishan mini chicken (DM) and Cobb broiler (CB) were selected from each group, with 4 replicates and 10 chickens in each replicate. The chickens were reared until 90 d of age under the same management conditions. Then, metabolomics and transcriptomics data of 90-day-old DM (n = 4) and CB (n = 4) were integrated to analyze metabolites affecting breast muscle quality and flavor, and to explore the important genes regulating meat quality and flavor related metabolites. The results showed that a total of 38 significantly different metabolites (SDMs) and 420 differentially expressed genes (DEGs) were detected in the breast muscle of the 2 breeds. Amino acid and lipid metabolism may be the cause of meat quality and flavor difference between DM and CB chickens, involving metabolites such as L-methionine, betaine, N6, N6, N6-Trimethyl-L-lysine, L-anserine, glutathione, glutathione disulfide, L-threonine, N-Acetyl-L-aspartic acid, succinate, choline, DOPC, SOPC, alpha-linolenic acid, L-palmitoylcarnitine, etc. Important regulatory genes with high correlation with flavor amino acids (GATM, GSTO1) and lipids (PPARG, LPL, PLIN1, SCD, ANGPTL4, FABP7, GK, B4GALT6, UGT8, PLPP4) were identified by correlation analysis, and the gene-metabolite interaction network of breast muscle mass and flavor formation in DM chicken was constructed. This study showed that there were significant differences in breast metabolites between DM and CB chickens, mainly in amino acid and lipid metabolites. These 2 kinds of substances may be the main reasons for the difference in breast muscle quality and flavor between the 2 breeds. In general, this study could provide a theoretical basis for further research on the molecular regulatory mechanism of the formation of breast muscle quality and flavor differences between DM and CB chickens, and provide a reference for the development, utilization and genetic breeding of high-quality meat chicken breeds.
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Affiliation(s)
- Jingying Zhao
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Xuehai Ge
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Tao Li
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Min Yang
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Ruohan Zhao
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Shixiong Yan
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Hao Wu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Yong Liu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; Yunnan Rural Revitalization Education Institute, Yunnan Open University, Kunming 650101, China
| | - Kun Wang
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Zhiqiang Xu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Junjing Jia
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Lixian Liu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; Institute of Science and Technology, Chuxiong Normal University, Chuxiong 675099, China
| | - Tengfei Dou
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China.
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7
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Mishra B, Yuan Y, Yu H, Kang H, Gao J, Daniels R, Chen X. Synthetic Sialosides Terminated with 8-N-Substituted Sialic Acid as Selective Substrates for Sialidases from Bacteria and Influenza Viruses. Angew Chem Int Ed Engl 2024; 63:e202403133. [PMID: 38713874 DOI: 10.1002/anie.202403133] [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: 02/16/2024] [Revised: 04/17/2024] [Accepted: 05/02/2024] [Indexed: 05/09/2024]
Abstract
Sialosides containing C8-modified sialic acids are challenging synthetic targets but potentially useful probes for diagnostic substrate profiling of sialidases and elucidating the binding specificity of sialic acid-interacting proteins. Here, we demonstrate efficient chemoenzymatic methods for synthesizing para-nitrophenol-tagged α2-3- and α2-6-linked sialyl galactosides containing C8-acetamido, C8-azido, or C8-amino derivatized N-acetylneuraminic acid (Neu5Ac). High-throughput substrate specificity studies showed that the C8-modification of sialic acid significantly changes its recognition by sialidases from humans, various bacteria, and different influenza A and B viruses. Sialosides carrying Neu5Ac with a C8-azido modification were generally well tolerated by all the sialidases we tested, whereas sialosides containing C8-acetamido-modified Neu5Ac were only cleaved by selective bacterial sialidases. In contrast, sialosides with C8-amino-modified Neu5Ac were cleaved by a combination of selective bacterial and influenza A virus sialidases. These results indicate that sialosides terminated with a C8-amino or C8-acetamido-modified sialic acid can be used with other sialosides for diagnostic profiling of disease-causing sialidase-producing pathogens.
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Affiliation(s)
- Bijoyananda Mishra
- Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, United States
| | - Yue Yuan
- Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, United States
| | - Hai Yu
- Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, United States
| | - Hyeog Kang
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, 20993, United States
| | - Jin Gao
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, 20993, United States
| | - Robert Daniels
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, 20993, United States
| | - Xi Chen
- Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, United States
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Ayyalasomayajula R, Boneva I, Ormaza D, Whyte A, Farook K, Gorlin Z, Yancey E, André S, Kaltner H, Cudic M. Synthesis and Thermodynamic Evaluation of Sialyl-Tn MUC1 Glycopeptides Binding to Macrophage Galactose-Type Lectin. Chembiochem 2024:e202400391. [PMID: 38877657 DOI: 10.1002/cbic.202400391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/30/2024] [Accepted: 06/14/2024] [Indexed: 06/16/2024]
Abstract
Interactions between the tumor-associated carbohydrate antigens of Mucin 1 (MUC1) and the carbohydrate-binding proteins, lectins, often lead to the creation of a pro-tumor microenvironment favoring tumor initiation, progression, metastasis, and immune evasion. Macrophage galactose binding lectin (MGL) is a C-type lectin receptor found on antigen-presenting cells that facilitates the uptake of carbohydrate antigens for antigen presentation, modulating the immune response homeostasis, autoimmunity, and cancer. Considering the crucial role of tumor-associated forms of MUC1 and MGL in tumor immunology, a thorough understanding of their binding interaction is essential for it to be exploited for cancer vaccine strategies. The synthesis of MUC1 glycopeptide models carrying a single or multiple Tn and/or sialyl-Tn antigen(s) is described. A novel approach for the sialyl-Tn threonine building block suitable for the solid phase peptide synthesis was developed. The thermodynamic profile of the binding interaction between the human MGL and MUC1 glycopeptide models was analyzed using isothermal titration calorimetry. The measured dissociation constants for the sialyl-Tn-bearing peptide epitopes were consistently lower compared to the Tn antigen and ranged from 10 μM for mono- to 1 μM for triglycosylated MUC1 peptide, respectively. All studied interactions, regardless of the glycan's site of attachment or density, exhibited enthalpy-driven thermodynamics.
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Affiliation(s)
- Ramya Ayyalasomayajula
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd, Boca Raton, FL, 33431
| | - Ivet Boneva
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd, Boca Raton, FL, 33431
| | - David Ormaza
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd, Boca Raton, FL, 33431
| | - Andrew Whyte
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd, Boca Raton, FL, 33431
| | - Kamran Farook
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd, Boca Raton, FL, 33431
| | - Zachary Gorlin
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd, Boca Raton, FL, 33431
| | - Evelyn Yancey
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd, Boca Raton, FL, 33431
| | - Sabine André
- Department of Veterinary Sciences, Physiological Chemistry, Ludwig-Maximilians-Universität München, Lena-Christ-Str. 48, 82152, Planegg-Martinsried
| | - Herbert Kaltner
- Department of Veterinary Sciences, Physiological Chemistry, Ludwig-Maximilians-Universität München, Lena-Christ-Str. 48, 82152, Planegg-Martinsried
| | - Maré Cudic
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd, Boca Raton, FL, 33431
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9
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Jordan C, Siebold K, Priegue P, Seeberger PH, Gilmour R. A Fluorinated Sialic Acid Vaccine Lead Against Meningitis B and C. J Am Chem Soc 2024; 146:15366-15375. [PMID: 38768956 PMCID: PMC11157539 DOI: 10.1021/jacs.4c03179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 05/22/2024]
Abstract
Inspired by the specificity of α-(2,9)-sialyl epitopes in bacterial capsular polysaccharides (CPS), a doubly fluorinated disaccharide has been validated as a vaccine lead against Neisseria meningitidis serogroups C and/or B. Emulating the importance of fluorine in drug discovery, this molecular editing approach serves a multitude of purposes, which range from controlling α-selective chemical sialylation to mitigating competing elimination. Conjugation of the disialoside with two carrier proteins (CRM197 and PorA) enabled a semisynthetic vaccine to be generated; this was then investigated in six groups of six mice. The individual levels of antibodies formed were compared and classified as highly glycan-specific and protective. All glycoconjugates induced a stable and long-term IgG response and binding to the native CPS epitope was achieved. The generated antibodies were protective against MenC and/or MenB; this was validated in vitro by SBA and OPKA assays. By merging the fluorinated glycan epitope of MenC with an outer cell membrane protein of MenB, a bivalent vaccine against both serogroups was created. It is envisaged that validation of this synthetic, fluorinated disialoside bioisostere as a potent antigen will open new therapeutic avenues.
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Affiliation(s)
- Christina Jordan
- Institute
for Organic Chemistry, University of Münster, Corrensstraße 36, Münster 48149, Germany
| | - Kathrin Siebold
- Institute
for Organic Chemistry, University of Münster, Corrensstraße 36, Münster 48149, Germany
| | - Patricia Priegue
- Department
of Biomolecular Systems, Max Planck Institute
for Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany
- Freie
Universität Berlin, Institute of
Chemistry and Biochemistry, Arnimallee 22, Berlin 14195, Germany
| | - Peter H. Seeberger
- Department
of Biomolecular Systems, Max Planck Institute
for Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany
- Freie
Universität Berlin, Institute of
Chemistry and Biochemistry, Arnimallee 22, Berlin 14195, Germany
| | - Ryan Gilmour
- Institute
for Organic Chemistry, University of Münster, Corrensstraße 36, Münster 48149, Germany
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10
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Xu Z, Li J, Yan N, Liu X, Deng Y, Song Y. Phosphatidylserine and/or Sialic Acid Modified Liposomes Increase Uptake by Tumor-associated Macrophages and Enhance the Anti-tumor Effect. AAPS PharmSciTech 2024; 25:125. [PMID: 38834759 DOI: 10.1208/s12249-024-02837-3] [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: 01/07/2024] [Accepted: 05/13/2024] [Indexed: 06/06/2024] Open
Abstract
DOX liposomes have better therapeutic effects and lower toxic side effects. The targeting ability of liposomes is one of the key factors affecting the therapeutic effect of DOX liposomes. This study developed two types of targeted liposomes. Sialic acid (SA)-modified liposomes were designed to target the highly expressed Siglec-1 receptor on tumor-associated macrophages surface. Phosphatidylserine (PS)-modified liposomes were designed to promote phagocytosis by monocyte-derived macrophages through PS apoptotic signaling. In order to assess and compare the therapeutic potential of different targeted pathways in the context of anti-tumor treatment, we compared four phosphatidylserine membrane materials (DOPS, DSPS, DPPS and DMPS) and found that liposomes prepared using DOPS as material could significantly improve the uptake ability of RAW264.7 cells for DOX liposomes. On this basis, normal DOX liposomes (CL-DOX) and SA-modified DOX liposomes (SAL-DOX), PS-modified DOX liposomes (PS-CL-DOX), SA and PS co-modified DOX liposomes (PS-SAL-DOX) were prepared. The anti-tumor cells function of each liposome on S180 and RAW264.7 in vitro was investigated, and it was found that SA on the surface of liposomes can increase the inhibitory effect. In vivo efficacy results exhibited that SAL-DOX and PS-CL-DOX were superior to other groups in terms of ability to inhibit tumor growth and tumor inhibition index, among which SAL-DOX had the best anti-tumor effect. Moreover, SAL-DOX group mice had high expression of IFN-γ as well as IL-12 factors, which could significantly inhibit mice tumor growth, improve the immune microenvironment of the tumor site, and have excellent targeted delivery potential.
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Affiliation(s)
- Zihan Xu
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, People's Republic of China
| | - Jie Li
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, People's Republic of China
| | - Na Yan
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, People's Republic of China
| | - Xinrong Liu
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, People's Republic of China
| | - Yihui Deng
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, People's Republic of China
| | - Yanzhi Song
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, People's Republic of China.
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11
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Huang Y, Zhu Q, Wang Y, Zhu K. Bacterial-derived sialidases inhibit porcine rotavirus OSU replication by interfering with the early steps of infection. Microb Pathog 2024; 190:106628. [PMID: 38508422 DOI: 10.1016/j.micpath.2024.106628] [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: 01/05/2024] [Revised: 02/27/2024] [Accepted: 03/17/2024] [Indexed: 03/22/2024]
Abstract
Rotavirus infections in suckling and weaning piglets cause severe dehydration and death, resulting in significant economic losses in the pig breeding industry. With the continuous emergence of porcine rotavirus (PoRV) variants and poor vaccine cross-protection among various genotypes, there is an urgent need to develop alternative strategies such as seeking effective antiviral products from nature, microbial metabolites and virus-host protein interaction. Sialidases play a crucial role in various physiopathological processes and offer a promising target for developing antivirus drugs. However, the effect of bacterial-derived sialidases on the infection of PoRVs remains largely unknown. Herein, we investigated the impact of bacterial-derived sialidases (sialidase Cp and Vc) on PoRV strain OSU(Group A) infection, using differentiated epithelial monkey kidney cells (MA104) as a model. Our results indicated that the pretreatment of MA104 with exogenous sialidases effectively suppressed PoRV OSU in a concentration-dependent manner. Notably, even at a concentration of 0.01 μU/mL, sialidases significantly inhibited the virus (MOI = 0.01). Meanwhile, we found that sialidase Vc pretreatment sharply reduced the binding rate of PoRV OSU. Last, we demonstrated that PoRV OSU might recognize α-2,3-linked sialic acid as the primary attachment factor in MA104. Our findings provide new insights into the underlying mechanism of PoRV OSU infections, shedding lights on the development of alternative antivirus approaches based on bacteria-virus interaction.
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Affiliation(s)
- Yucheng Huang
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Qian Zhu
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Yongqiang Wang
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Kui Zhu
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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12
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Walklett AJ, Flack EKP, Chidwick HS, Hatton NE, Keenan T, Budhadev D, Walton J, Thomas GH, Fascione MA. The Retaining Pse5Ac7Ac Pseudaminyltransferase KpsS1 Defines a Previously Unreported glycosyltransferase family (GT118). Angew Chem Int Ed Engl 2024; 63:e202318523. [PMID: 38224120 DOI: 10.1002/anie.202318523] [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: 12/03/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/16/2024]
Abstract
Cell surface sugar 5,7-diacetyl pseudaminic acid (Pse5Ac7Ac) is a bacterial analogue of the ubiquitous sialic acid, Neu5Ac, and contributes to the virulence of a number of multidrug resistant bacteria, including ESKAPE pathogens Pseudomonas aeruginosa, and Acinetobacter baumannii. Despite its discovery in the surface glycans of bacteria over thirty years ago, to date no glycosyltransferase enzymes (GTs) dedicated to the synthesis of a pseudaminic acid glycosidic linkage have been unequivocally characterised in vitro. Herein we demonstrate that A. baumannii KpsS1 is a dedicated pseudaminyltransferase enzyme (PseT) which constructs a Pse5Ac7Ac-α(2,6)-Glcp linkage, and proceeds with retention of anomeric configuration. We utilise this PseT activity in tandem with the biosynthetic enzymes required for CMP-Pse5Ac7Ac assembly, in a two-pot, seven enzyme synthesis of an α-linked Pse5Ac7Ac glycoside. Due to its unique activity and protein sequence, we also assign KpsS1 as the prototypical member of a previously unreported GT family (GT118).
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Affiliation(s)
| | - Emily K P Flack
- Department of Chemistry, University of York, York, YO10 5DD, UK
- Department of Biology, University of York, York, YO10 5DD, UK
| | | | | | - Tessa Keenan
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | | | - Julia Walton
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Gavin H Thomas
- Department of Biology, University of York, York, YO10 5DD, UK
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13
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Shizukuishi S, Ogawa M, Kuroda E, Hamaguchi S, Sakuma C, Kakuta S, Tanida I, Uchiyama Y, Akeda Y, Ryo A, Ohnishi M. Pneumococcal sialidase promotes bacterial survival by fine-tuning of pneumolysin-mediated membrane disruption. Cell Rep 2024; 43:113962. [PMID: 38483905 DOI: 10.1016/j.celrep.2024.113962] [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: 10/02/2023] [Revised: 01/24/2024] [Accepted: 02/28/2024] [Indexed: 04/02/2024] Open
Abstract
Pneumolysin (Ply) is an indispensable cholesterol-dependent cytolysin for pneumococcal infection. Although Ply-induced disruption of pneumococci-containing endosomal vesicles is a prerequisite for the evasion of endolysosomal bacterial clearance, its potent activity can be a double-edged sword, having a detrimental effect on bacterial survivability by inducing severe endosomal disruption, bactericidal autophagy, and scaffold epithelial cell death. Thus, Ply activity must be maintained at optimal levels. We develop a highly sensitive assay to monitor endosomal disruption using NanoBiT-Nanobody, which shows that the pneumococcal sialidase NanA can fine-tune Ply activity by trimming sialic acid from cell-membrane-bound glycans. In addition, oseltamivir, an influenza A virus sialidase inhibitor, promotes Ply-induced endosomal disruption and cytotoxicity by inhibiting NanA activity in vitro and greater tissue damage and bacterial clearance in vivo. Our findings provide a foundation for innovative therapeutic strategies for severe pneumococcal infections by exploiting the duality of Ply activity.
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Affiliation(s)
- Sayaka Shizukuishi
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan; Department of Microbiology, Yokohama City University Graduate School of Medicine, Kanagawa, Japan
| | - Michinaga Ogawa
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan.
| | - Eisuke Kuroda
- Department of Transformative Infection Control Development Studies, Osaka University Graduate School of Medicine, Osaka, Japan; Division of Fostering Required Medical Human Resources, Center for Infectious Disease Education and Research (CiDER), Osaka University, Osaka, Japan
| | - Shigeto Hamaguchi
- Division of Fostering Required Medical Human Resources, Center for Infectious Disease Education and Research (CiDER), Osaka University, Osaka, Japan; Department of Transformative Analysis for Human Specimen, Osaka University Graduate School of Medicine, Osaka, Japan; Division of Infection Control and Prevention, Osaka University Hospital, Osaka, Japan
| | - Chisato Sakuma
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Soichiro Kakuta
- Laboratory of Morphology and Image Analysis, Biomedical Research Core Facilities, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Cellular and Molecular Neuropathology, Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Isei Tanida
- Department of Cellular and Molecular Neuropathology, Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yasuo Uchiyama
- Department of Cellular and Molecular Neuropathology, Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yukihiro Akeda
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Akihide Ryo
- Department of Microbiology, Yokohama City University Graduate School of Medicine, Kanagawa, Japan; Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Ohnishi
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
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14
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Uprety T, Yu J, Nogales A, Naveed A, Yu H, Chen X, Liu Y, Bowman AS, Martinez-Sobrido L, Parrish CR, Melikyan GB, Wang D, Li F. Influenza D virus utilizes both 9- O-acetylated N-acetylneuraminic and 9- O-acetylated N-glycolylneuraminic acids as functional entry receptors. J Virol 2024; 98:e0004224. [PMID: 38376198 PMCID: PMC10949506 DOI: 10.1128/jvi.00042-24] [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: 01/07/2024] [Accepted: 01/20/2024] [Indexed: 02/21/2024] Open
Abstract
Influenza D virus (IDV) utilizes bovines as a primary reservoir with periodical spillover to other hosts. We have previously demonstrated that IDV binds both 9-O-acetylated N-acetylneuraminic acid (Neu5,9Ac2) and 9-O-acetylated N-glycolylneuraminic acid (Neu5Gc9Ac). Bovines produce both Neu5,9Ac2 and Neu5Gc9Ac, while humans are genetically unable to synthesize Neu5Gc9Ac. 9-O-Acetylation of sialic acids is catalyzed by CASD1 via a covalent acetyl-enzyme intermediate. To characterize the role of Neu5,9Ac2 and Neu5Gc9Ac in IDV infection and determine which form of 9-O-acetylated sialic acids drives IDV entry, we took advantage of a CASD1 knockout (KO) MDCK cell line and carried out feeding experiments using synthetic 9-O-acetyl sialic acids in combination with the single-round and multi-round IDV infection assays. The data from our studies show that (i) CASD1 KO cells are resistant to IDV infection and lack of IDV binding to the cell surface is responsible for the failure of IDV replication; (ii) feeding CASD1 KO cells with Neu5,9Ac2 or Neu5Gc9Ac resulted in a dose-dependent rescue of IDV infectivity; and (iii) diverse IDVs replicated robustly in CASD1 KO cells fed with either Neu5,9Ac2 or Neu5Gc9Ac at a level similar to that in wild-type cells with a functional CASD1. These data demonstrate that IDV can utilize Neu5,9Ac2- or non-human Neu5Gc9Ac-containing glycan receptor for infection. Our findings provide evidence that IDV has acquired the ability to infect and transmit among agricultural animals that are enriched in Neu5Gc9Ac, in addition to posing a zoonotic risk to humans expressing only Neu5,9Ac2.IMPORTANCEInfluenza D virus (IDV) has emerged as a multiple-species-infecting pathogen with bovines as a primary reservoir. Little is known about the functional receptor that drives IDV entry and promotes its cross-species spillover potential among different hosts. Here, we demonstrated that IDV binds exclusively to 9-O-acetylated N-acetylneuraminic acid (Neu5,9Ac2) and non-human 9-O-acetylated N-glycolylneuraminic acid (Neu5Gc9Ac) and utilizes both for entry and infection. This ability in effective engagement of both 9-O-acetylated sialic acids as functional receptors for infection provides an evolutionary advantage to IDV for expanding its host range. This finding also indicates that IDV has the potential to emerge in humans because Neu5,9Ac2 is ubiquitously expressed in human tissues, including lung. Thus, results of our study highlight a need for continued surveillance of IDV in humans, as well as for further investigation of its biology and cross-species transmission mechanism.
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Affiliation(s)
- Tirth Uprety
- Maxwell H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA
| | - Jieshi Yu
- Maxwell H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA
| | - Aitor Nogales
- Centro de Investigación en Sanidad Animal, INIA-CSIC. Madrid, Madrid, Spain
| | - Ahsan Naveed
- Maxwell H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA
| | - Hai Yu
- Department of Chemistry, University of California, Davis, California, USA
| | - Xi Chen
- Department of Chemistry, University of California, Davis, California, USA
| | | | - Andrew S. Bowman
- Department of Veterinary Preventive Medicine, The Ohio State University, Columbus, Ohio, USA
| | | | - Colin R. Parrish
- College of Veterinary Medicine, Cornell University, Ithaca, New York, USA
| | | | - Dan Wang
- Maxwell H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA
| | - Feng Li
- Maxwell H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA
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15
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Dedola S, Ahmadipour S, de Andrade P, Baker AN, Boshra AN, Chessa S, Gibson MI, Hernando PJ, Ivanova IM, Lloyd JE, Marín MJ, Munro-Clark AJ, Pergolizzi G, Richards SJ, Ttofi I, Wagstaff BA, Field RA. Sialic acids in infection and their potential use in detection and protection against pathogens. RSC Chem Biol 2024; 5:167-188. [PMID: 38456038 PMCID: PMC10915975 DOI: 10.1039/d3cb00155e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 12/12/2023] [Indexed: 03/09/2024] Open
Abstract
In structural terms, the sialic acids are a large family of nine carbon sugars based around an alpha-keto acid core. They are widely spread in nature, where they are often found to be involved in molecular recognition processes, including in development, immunology, health and disease. The prominence of sialic acids in infection is a result of their exposure at the non-reducing terminus of glycans in diverse glycolipids and glycoproteins. Herein, we survey representative aspects of sialic acid structure, recognition and exploitation in relation to infectious diseases, their diagnosis and prevention or treatment. Examples covered span influenza virus and Covid-19, Leishmania and Trypanosoma, algal viruses, Campylobacter, Streptococci and Helicobacter, and commensal Ruminococci.
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Affiliation(s)
- Simone Dedola
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
- Iceni Glycoscience Ltd, Norwich Research Park Norwich NR4 7TJ UK
| | - Sanaz Ahmadipour
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
| | - Peterson de Andrade
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
| | - Alexander N Baker
- Department of Chemistry, University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
| | - Andrew N Boshra
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Assiut University Assiut 71526 Egypt
| | - Simona Chessa
- Iceni Glycoscience Ltd, Norwich Research Park Norwich NR4 7TJ UK
| | - Matthew I Gibson
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
- Department of Chemistry, University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
- Division of Biomedical Sciences, Warwick Medical School Coventry CV4 7AL UK
| | - Pedro J Hernando
- Iceni Glycoscience Ltd, Norwich Research Park Norwich NR4 7TJ UK
| | - Irina M Ivanova
- Iceni Glycoscience Ltd, Norwich Research Park Norwich NR4 7TJ UK
| | - Jessica E Lloyd
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
| | - María J Marín
- School of Chemistry, University of East Anglia, Norwich Research Park Norwich NR4 7TJ UK
| | - Alexandra J Munro-Clark
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
| | | | - Sarah-Jane Richards
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
- Department of Chemistry, University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
| | - Iakovia Ttofi
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
- Iceni Glycoscience Ltd, Norwich Research Park Norwich NR4 7TJ UK
| | - Ben A Wagstaff
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
| | - Robert A Field
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester 131 Princess Street Manchester M1 7DN UK
- Iceni Glycoscience Ltd, Norwich Research Park Norwich NR4 7TJ UK
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16
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Zangiabadi M, Bahrami F, Ghosh A, Yu H, Agrahari AK, Chen X, Zhao Y. Synthetic Catalysts for Selective Glycan Cleavage from Glycoproteins and Cells. J Am Chem Soc 2024; 146:4346-4350. [PMID: 38346011 PMCID: PMC11103250 DOI: 10.1021/jacs.3c13700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
In situ modification of glycans requires extraordinary molecular recognition of highly complex and subtly different carbohydrates, followed by reactions at precise locations on the substrate. We here report synthetic catalysts that under physiological conditions cleave a predetermined oligosaccharide block such as a branched trimannose or the entire N-glycan of a glycoprotein, while nontargeted glycoproteins stay intact. The method also allows α2-6-sialylated galactosides to be removed preferentially over the α2-3-linked ones from cell surfaces, highlighting the potential of these synthetic glycosidases for glycan editing.
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Affiliation(s)
- Milad Zangiabadi
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Foroogh Bahrami
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Avijit Ghosh
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Hai Yu
- Department of Chemistry, University of California-Davis, One Shields Avenue, Davis, California 95616, United States
| | - Anand Kumar Agrahari
- Department of Chemistry, University of California-Davis, One Shields Avenue, Davis, California 95616, United States
| | - Xi Chen
- Department of Chemistry, University of California-Davis, One Shields Avenue, Davis, California 95616, United States
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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17
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Radwan M, Jana M, Cairo CW. Facile synthesis of C5-azido derivatives of thiosialosides and 2,3-dehydro-5-N-acetylneuraminic acid (DANA). Carbohydr Res 2024; 536:109013. [PMID: 38185031 DOI: 10.1016/j.carres.2023.109013] [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: 10/30/2023] [Revised: 12/14/2023] [Accepted: 12/14/2023] [Indexed: 01/09/2024]
Abstract
Neuraminic acid (Neu5Ac, also known as sialic acid) is an important monosaccharide found in glycoproteins and glycolipids which plays a vital role in regulation of physiological functions and pathological conditions. The study of sialoglycans has benefitted from the development of glycomimetic probes and inhibitors for proteins and enzymes that interact with and modify neuraminic acid in glycan chains. Methods to access sialoside intermediates with high yield are needed to facilitate the design of new targets. Here, we report the synthesis of C5-azido thiosialosides using a mild method to deprotect the C5-acetamido functional group followed by the use of a diazo-transfer reagent. We examined two diazo-transfer strategies and compared their yields and tolerance of acetate protecting groups. The same methods and comparisons were also performed for the 2,3-dehydro-5-N-acetylneuraminic acid (DANA) scaffold which is commonly used to generate inhibitors of neuraminidase (sialidase) enzymes. We found that C5-azido derivatives of both thiosialosides and DANA could be produced in five or six steps with yields up to 76 % and 83 %, respectively. Diazo-transfer reagents compared in this study were trifluoromethanesulfonyl azide (TfN3) and imidazole-1-sulfonyl azide (ImzSO2N3). We found that both reagents were compatible with this method and showed comparable yields. Finally, we show that C5-azido derivatives can help to avoid O, N-acyl protecting group migration which was observed in C5-NHAc analogs.
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Affiliation(s)
- Mostafa Radwan
- Department of Chemistry, University of Alberta, Edmonton Alberta, T6G 2G2, Canada
| | - Manas Jana
- Department of Chemistry, University of Alberta, Edmonton Alberta, T6G 2G2, Canada
| | - Christopher W Cairo
- Department of Chemistry, University of Alberta, Edmonton Alberta, T6G 2G2, Canada.
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18
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Mamirgova ZZ, Zinin AI, Chizhov AO, Kononov LO. Synthesis of sialyl halides with various acyl protective groups. Carbohydr Res 2024; 536:109033. [PMID: 38295530 DOI: 10.1016/j.carres.2024.109033] [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: 11/30/2023] [Revised: 12/31/2023] [Accepted: 01/05/2024] [Indexed: 02/02/2024]
Abstract
Glycosyl halides are historically one of the first glycosyl donors used in glycosylation reactions, and interest in glycosylation reactions involving this class of glycosyl donors is currently increasing. New methods for their activation have been proposed and effective syntheses of oligosaccharides with their participation have been developed. At the same time, the possibilities of using these approaches to the synthesis of sialosides are restricted by the limited diversity of known sialyl halides (previously, mainly sialyl chlorides, less often sialyl bromides and sialyl fluorides, with acetyl (Ac) groups at the oxygen atoms and AcNH, Ac2N and N3 groups at C-5 were used). This work describes the synthesis of six new N-acetyl- and N-trifluoroacetyl-sialyl chlorides and bromides with O-chloroacetyl and O-trifluoroacetyl protective groups. Preparation of N,O-trifluoroacetyl protected derivatives was made possible due to development of the synthesis of sialic acid methyl ester pentaol with N-trifluoroacetyl group.
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Affiliation(s)
- Zarina Z Mamirgova
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp. 47, 119991, Russian Federation
| | - Alexander I Zinin
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp. 47, 119991, Russian Federation
| | - Alexander O Chizhov
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp. 47, 119991, Russian Federation
| | - Leonid O Kononov
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp. 47, 119991, Russian Federation.
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19
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Orlova AV, Malysheva NN, Panova MV, Podvalnyy NM, Medvedev MG, Kononov LO. Comparison of glycosyl donors: a supramer approach. Beilstein J Org Chem 2024; 20:181-192. [PMID: 38318458 PMCID: PMC10840533 DOI: 10.3762/bjoc.20.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 01/15/2024] [Indexed: 02/07/2024] Open
Abstract
The development of new methods for chemical glycosylation commonly includes comparison of various glycosyl donors. An attempted comparison of chemical properties of two sialic acid-based thioglycoside glycosyl donors, differing only in the substituent at O-9 (trifluoroacetyl vs chloroacetyl), at different concentrations (0.05 and 0.15 mol·L-1) led to mutually excluding conclusions concerning their relative reactivity and selectivity, which prevented us from revealing a possible influence of remote protective groups at O-9 on glycosylation outcome. According to the results of the supramer analysis of the reaction solutions, this issue might be related to the formation of supramers of glycosyl donors differing in structure hence chemical properties. These results seem to imply that comparison of chemical properties of different glycosyl donors may not be as simple and straightforward as it is usually considered.
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Affiliation(s)
- Anna V Orlova
- Laboratory of Glycochemistry, N.D. Zelinsky Institute of Organic Chemistry, Moscow, Russian Federation
| | - Nelly N Malysheva
- Laboratory of Glycochemistry, N.D. Zelinsky Institute of Organic Chemistry, Moscow, Russian Federation
| | - Maria V Panova
- Laboratory of Glycochemistry, N.D. Zelinsky Institute of Organic Chemistry, Moscow, Russian Federation
| | - Nikita M Podvalnyy
- Laboratory of Glycochemistry, N.D. Zelinsky Institute of Organic Chemistry, Moscow, Russian Federation
| | - Michael G Medvedev
- Theoretical Chemistry Group, N.D. Zelinsky Institute of Organic Chemistry, Moscow, Russian Federation
| | - Leonid O Kononov
- Laboratory of Glycochemistry, N.D. Zelinsky Institute of Organic Chemistry, Moscow, Russian Federation
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20
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Chen X. Enabling Chemoenzymatic Strategies and Enzymes for Synthesizing Sialyl Glycans and Sialyl Glycoconjugates. Acc Chem Res 2024; 57:234-246. [PMID: 38127793 PMCID: PMC10795189 DOI: 10.1021/acs.accounts.3c00614] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/04/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
Sialic acids are fascinating negatively charged nine-carbon monosaccharides. Sialic acid-containing glycans and glycoconjugates are structurally diverse, functionally important, and synthetically challenging molecules. We have developed highly efficient chemoenzymatic strategies that combine the power of chemical synthesis and enzyme catalysis to make sialic acids, sialyl glycans, sialyl glycoconjugates, and their derivatives more accessible, enabling the efforts to explore their functions and applications. The Account starts with a brief description of the structural diversity and the functional importance of naturally occurring sialic acids and sialosides. The development of one-pot multienzyme (OPME) chemoenzymatic sialylation strategies is then introduced, highlighting its advantages in synthesizing structurally diverse sialosides with a sialyltransferase donor substrate engineering tactic. With the strategy, systematic access to sialosides containing different sialic acid forms with modifications at C3/4/5/7/8/9, various internal glycans, and diverse sialyl linkages is now possible. Also briefly described is the combination of the OPME sialylation strategy with bacterial sialidases for synthesizing sialidase inhibitors. With the goal of simplifying the product purification process for enzymatic glycosylation reactions, glycosphingolipids that contain a naturally existing hydrophobic tag are attractive targets for chemoenzymatic total synthesis. A user-friendly highly efficient chemoenzymatic strategy is developed which involves three main processes, including chemical synthesis of lactosyl sphingosine as a water-soluble hydrophobic tag-containing intermediate, OPME enzymatic extension of its glycan component with a single C18-cartridge purification of the product, followed by a facile chemical acylation reaction. The strategy allows the introduction of different sialic acid forms and diverse fatty acyl chains into the products. Gram-scale synthesis has been demonstrated. OPME sialylation has also been demonstrated for the chemoenzymatic synthesis of sialyl glycopeptides and in vitro enzymatic N-glycan processing for the formation of glycoproteins with disialylated biantennary complex-type N-glycans. For synthesizing human milk oligosaccharides (HMOs) which are glycans with a free reducing end, acceptor substrate engineering and process engineering strategies are developed, which involve the design of a hydrophobic tag that can be easily installed into the acceptor substrate to allow facile purification of the product from enzymatic reactions and can be conveniently removed in the final step to produce target molecules. The process engineering involves heat-inactivation of enzymes in the intermediate steps in multistep OPME reactions for the production of long-chain sialoside targets in a single reaction pot and with a single C18-cartridge purification process. In addition, a chemoenzymatic synthon strategy has been developed. It involves the design of a derivative of the sialyltransferase donor substrate precursor, which is tolerated by enzymes in OPME reactions, introduced to enzymatic products, and then chemically converted to the desired target structures in the final step. The chemoenzymatic synthon approach has been used together with the acceptor substrate engineering method in the synthesis of complex bacterial glycans containing sialic acids, legionaminic acids, and derivatives. The biocatalysts characterized and their engineered mutants developed by the Chen group are described, with highlights on synthetically useful enzymes. We anticipate further development of chemoenzymatic strategies and biocatalysts to enable exploration of the sialic acid space.
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Affiliation(s)
- Xi Chen
- Department of Chemistry, University of California, Davis, California 95616, United States
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21
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Harazi A, Yakovlev L, Ilouz N, Selke P, Horstkorte R, Fellig Y, Lahat O, Lifschytz T, Abudi N, Abramovitch R, Argov Z, Mitrani-Rosenbaum S. Induced Muscle and Liver Absence of Gne in Postnatal Mice Does Not Result in Structural or Functional Muscle Impairment. J Neuromuscul Dis 2024; 11:905-917. [PMID: 38875046 PMCID: PMC11380236 DOI: 10.3233/jnd-240056] [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] [Indexed: 06/16/2024]
Abstract
Background GNE Myopathy is a unique recessive neuromuscular disorder characterized by adult-onset, slowly progressive distal and proximal muscle weakness, caused by mutations in the GNE gene which is a key enzyme in the biosynthesis of sialic acid. To date, the precise pathophysiology of the disease is not well understood and no reliable animal model is available. Gne KO is embryonically lethal in mice. Objective To gain insights into GNE function in muscle, we have generated an inducible muscle Gne KO mouse. To minimize the contribution of the liver to the availability of sialic acid to muscle via the serum, we have also induced combined Gne KO in liver and muscle. Methods A mouse carrying loxp sequences flanking Gne exon3 was generated by Crispr/Cas9 and bred with a human skeletal actin (HSA) promoter driven CreERT mouse. Gne muscle knock out was induced by tamoxifen injection of the resulting homozygote GneloxpEx3loxp/HSA Cre mouse. Liver Gne KO was induced by systemic injection of AAV8 vectors carrying the Cre gene driven by the hepatic specific promoter of the thyroxine binding globulin gene. Results Characterization of these mice for a 12 months period showed no significant changes in their general behaviour, motor performance, muscle mass and structure in spite of a dramatic reduction in sialic acid content in both muscle and liver. Conclusions We conclude that post weaning lack of Gne and sialic acid in muscle and liver have no pathologic effect in adult mice. These findings could reflect a strong interspecies versatility, but also raise questions about the loss of function hypothesis in Gne Myopathy. If these findings apply to humans they have a major impact on therapeutic strategies.
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Affiliation(s)
- Avi Harazi
- Goldyne Savad Institute of Gene Therapy, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Lena Yakovlev
- Goldyne Savad Institute of Gene Therapy, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Nili Ilouz
- Goldyne Savad Institute of Gene Therapy, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Philipp Selke
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Rudiger Horstkorte
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Yakov Fellig
- Department of Pathology, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Olga Lahat
- Goldyne Savad Institute of Gene Therapy, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Tzuri Lifschytz
- Biological Psychiatry Laboratory and Hadassah BrainLabs Center for Psychedelic Research, Hadassah Medical Center, Hebrew University, Jerusalem, Israel
| | - Nathalie Abudi
- Goldyne Savad Institute of Gene Therapy, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- The Wohl Institute for Translational Medicine, Hadassah Medical Center, Jerusalem, Israel
| | - Rinat Abramovitch
- Goldyne Savad Institute of Gene Therapy, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- The Wohl Institute for Translational Medicine, Hadassah Medical Center, Jerusalem, Israel
| | - Zohar Argov
- Department of Neurology, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Stella Mitrani-Rosenbaum
- Goldyne Savad Institute of Gene Therapy, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
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22
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Li D, Lin Q, Luo F, Wang H. Insights into the Structure, Metabolism, Biological Functions and Molecular Mechanisms of Sialic Acid: A Review. Foods 2023; 13:145. [PMID: 38201173 PMCID: PMC10779236 DOI: 10.3390/foods13010145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/18/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
Sialic acid (SA) is a kind of functional monosaccharide which exists widely in edible bird's nest (EBN), milk, meat, mucous membrane surface, etc. SA is an important functional component in promoting brain development, anti-oxidation, anti-inflammation, anti-virus, anti-tumor and immune regulation. The intestinal mucosa covers the microbial community that has a significant impact on health. In the gut, SA can also regulate gut microbiota and metabolites, participating in different biological functions. The structure, source and physiological functions of SA were reviewed in this paper. The biological functions of SA through regulating key signaling pathways and target genes were discussed. In summary, SA can modulate gut microbiota and metabolites, which affect gene expressions and exert its biological activities. It is helpful to provide scientific reference for the further investigation of SA in the functional foods.
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Affiliation(s)
- Dan Li
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, National Engineering Laboratory for Deep Process of Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China;
- Hunan Engineering Research Center of Full Life-Cycle Energy-Efficient Buildings and Environmental Health, School of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Qinlu Lin
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, National Engineering Laboratory for Deep Process of Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China;
| | - Feijun Luo
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, National Engineering Laboratory for Deep Process of Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China;
| | - Hanqing Wang
- Hunan Engineering Research Center of Full Life-Cycle Energy-Efficient Buildings and Environmental Health, School of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, China
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23
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Lu B, Liao SM, Liu XH, Liang SJ, Huang J, Lin M, Meng L, Wang QY, Huang RB, Zhou GP. The NMR studies of CMP inhibition of polysialylation. J Enzyme Inhib Med Chem 2023; 38:2248411. [PMID: 37615033 PMCID: PMC10453990 DOI: 10.1080/14756366.2023.2248411] [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: 04/15/2023] [Revised: 07/22/2023] [Accepted: 08/09/2023] [Indexed: 08/25/2023] Open
Abstract
The overexpression of polysialic acid (polySia) on neural cell adhesion molecules (NCAM) promotes hypersialylation, and thus benefits cancer cell migration and invasion. It has been proposed that the binding between the polysialyltransferase domain (PSTD) and CMP-Sia needs to be inhibited in order to block the effects of hypersialylation. In this study, CMP was confirmed to be a competitive inhibitor of polysialyltransferases (polySTs) in the presence of CMP-Sia and triSia (oligosialic acid trimer) based on the interactional features between molecules. The further NMR analysis suggested that polysialylation could be partially inhibited when CMP-Sia and polySia co-exist in solution. In addition, an unexpecting finding is that CMP-Sia plays a role in reducing the gathering extent of polySia chains on the PSTD, and may benefit for the inhibition of polysialylation. The findings in this study may provide new insight into the optimal design of the drug and inhibitor for cancer treatment.
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Affiliation(s)
- Bo Lu
- National Engineering Research Center for Non-food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Si-Ming Liao
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xue-Hui Liu
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Shi-Jie Liang
- National Engineering Research Center for Non-food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Jun Huang
- National Engineering Research Center for Non-food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Mei Lin
- National Engineering Research Center for Non-food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Li Meng
- National Engineering Research Center for Non-food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Qing-Yan Wang
- National Engineering Research Center for Non-food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Ri-Bo Huang
- National Engineering Research Center for Non-food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China
- Rocky Mount Life Sciences Institute, Rocky Mount, NC, USA
| | - Guo-Ping Zhou
- National Engineering Research Center for Non-food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China
- Rocky Mount Life Sciences Institute, Rocky Mount, NC, USA
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24
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Tran NP, Tran P, Yoo SY, Tangchang W, Lee S, Lee JY, Son HY, Park JS. Sialic acid-decorated liposomes enhance the anti-cancer efficacy of docetaxel in tumor-associated macrophages. BIOMATERIALS ADVANCES 2023; 154:213606. [PMID: 37678087 DOI: 10.1016/j.bioadv.2023.213606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 08/16/2023] [Accepted: 08/25/2023] [Indexed: 09/09/2023]
Abstract
Tumor-associated macrophages (TAMs) in the tumor microenvironment potentially enhance tumor growth and invasion through various mechanisms and are thus an essential factor in tumor immunity. The highly expressed siglec-1 receptors on the surfaces of TAMs are potential targets for cancer drug delivery systems. Sialic acid (SA) is a specific ligand for siglec-1. In this study, the sialic acid-polyethylene glycol conjugate (DSPE-PEG2000-SA) was synthesized to modify the surface of liposomes and target TAMs by interacting with the siglec-1 receptor. Three docetaxel (DTX)-loaded liposomes, conventional (DTX-CL), DSPE-PEG2000-coated (DTX-PL), and DSPE-PEG2000-SA-coated (DTX-SAPL) liposomes, were prepared, with a particle size of <100 nm, uniform polydispersity index (PDI) values, negative zeta potential, and % encapsulation efficiency (EE) exceeding 95 %. Liposomes showed high stability after 3 months of storage at 4 °C without significant changes in particle size, PDI, zeta potential, or % EE. DTX was released from liposomes according to the Weibull model, and DTX-SAPL exhibited more rapid drug release than other liposomes. In vitro studies demonstrated that DTX-SAPL liposome exhibited a higher uptake and cytotoxicity on RAW 264.7 cells (TAM model) and lower toxicity on NIH3T3 cells (normal cell model) than other formulations. The high cell uptake ability was demonstrated by the role of the SA-SA receptor. Biodistribution studies indicated a high tumor accumulation of surface-modified liposomal formulations, particularly SA-modified liposomes, showing high signal accumulation at the tumor periphery, where TAMs were highly concentrated. Ex vivo imaging showed a significantly higher accumulation of SA-modified liposomes in the tumor, kidney, and heart than conventional liposomes. In the anti-cancer efficacy study, DTX-SAPL liposomes showed effective inhibition of tumor growth and relatively low systemic toxicity, as evidenced by the tumor volume, tumor weight, body weight values, and histopathological analysis. Therefore, DSPE-PEG2000-SA-coated liposomes could be promising carriers for DTX delivery targeting TAMs in cancer therapy.
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Affiliation(s)
- Nhan Phan Tran
- College of Pharmacy, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Phuong Tran
- College of Pharmacy, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - So-Yeol Yoo
- College of Pharmacy, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Warisraporn Tangchang
- College of Veterinary Medicine, Chungnam National University, 99 Daehak-ro Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Seokwoo Lee
- College of Pharmacy, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Jae-Young Lee
- College of Pharmacy, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Hwa-Young Son
- College of Veterinary Medicine, Chungnam National University, 99 Daehak-ro Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Jeong-Sook Park
- College of Pharmacy, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea.
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25
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Vos GM, Hooijschuur KC, Li Z, Fjeldsted J, Klein C, de Vries RP, Toraño JS, Boons GJ. Sialic acid O-acetylation patterns and glycosidic linkage type determination by ion mobility-mass spectrometry. Nat Commun 2023; 14:6795. [PMID: 37880209 PMCID: PMC10600165 DOI: 10.1038/s41467-023-42575-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 10/16/2023] [Indexed: 10/27/2023] Open
Abstract
O-acetylation is a common modification of sialic acids that has been implicated in a multitude of biological and disease processes. A lack of analytical methods that can determine exact structures of sialic acid variants is a hurdle to determine roles of distinct O-acetylated sialosides. Here, we describe a drift tube ion mobility-mass spectrometry approach that can elucidate exact O-acetylation patterns as well as glycosidic linkage types of sialosides isolated from complex biological samples. It is based on the use of a library of synthetic O-acetylated sialosides to establish intrinsic collision cross section (CCS) values of diagnostic fragment ions. The CCS values were used to characterize O-acetylated sialosides from mucins and N-linked glycans from biologicals as well as equine tracheal and nasal tissues. It uncovered contrasting sialic acid linkage types of acetylated and non-acetylated sialic acids and provided a rationale for sialic acid binding preferences of equine H7 influenza A viruses.
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Affiliation(s)
- Gaёl M Vos
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Kevin C Hooijschuur
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Zeshi Li
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | | | | | - Robert P de Vries
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Javier Sastre Toraño
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.
| | - Geert-Jan Boons
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.
- Bijvoet Center for Biomolecular Research, Utrecht University, 3584 CG, Utrecht, The Netherlands.
- Complex Carbohydrate Research Center and Department of Chemistry, University of Georgia, 315 Riverbend Road, Athens, GA, 30602, USA.
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26
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Zhao M, Zhu Y, Wang H, Zhang W, Mu W. Recent advances on N-acetylneuraminic acid: Physiological roles, applications, and biosynthesis. Synth Syst Biotechnol 2023; 8:509-519. [PMID: 37502821 PMCID: PMC10369400 DOI: 10.1016/j.synbio.2023.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/22/2023] [Accepted: 06/27/2023] [Indexed: 07/29/2023] Open
Abstract
N-Acetylneuraminic acid (Neu5Ac), the most common type of Sia, generally acts as the terminal sugar in cell surface glycans, glycoconjugates, oligosaccharides, lipo-oligosaccharides, and polysaccharides, thus exerting numerous physiological functions. The extensive applications of Neu5Ac in the food, cosmetic, and pharmaceutical industries make large-scale production of this chemical desirable. Biosynthesis which is associated with important application potential and environmental friendliness has become an indispensable approach for large-scale synthesis of Neu5Ac. In this review, the physiological roles of Neu5Ac was first summarized in detail. Second, the safety evaluation, regulatory status, and applications of Neu5Ac were discussed. Third, enzyme-catalyzed preparation, whole-cell biocatalysis, and microbial de novo synthesis of Neu5Ac were comprehensively reviewed. In addition, we discussed the main challenges of Neu5Ac de novo biosynthesis, such as screening and engineering of key enzymes, identifying exporters of intermediates and Neu5Ac, and balancing cell growth and biosynthesis. The corresponding strategies and systematic strategies were proposed to overcome these challenges and facilitate Neu5Ac industrial-scale production.
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Affiliation(s)
- Mingli Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, PR China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, PR China
| | - Hao Wang
- Bloomage Biotechnology Corp., Ltd., Jinan, Shandong, 250010, PR China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, PR China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, PR China
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Fan Q, Li M, Zhao W, Zhang K, Li M, Li W. Hyper α2,6-Sialylation Promotes CD4 + T-Cell Activation and Induces the Occurrence of Ulcerative Colitis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302607. [PMID: 37424034 PMCID: PMC10502867 DOI: 10.1002/advs.202302607] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/23/2023] [Indexed: 07/11/2023]
Abstract
α2,6-sialylation, catalyzed by α2,6-sialyltransferase (ST6GAL1), plays a pivotal role in immune responses. However, the role of ST6GAL1 in the pathogenesis of ulcerative colitis (UC) remains unknown. ST6GAL1 mRNA is highly expressed in UC tissues compared with the corresponding adjacent normal tissues, and α2,6-sialylation is significantly increased in the colon tissues of patients with UC. The expression of ST6GAL1 and proinflammatory cytokines, such as interleukin (IL)-2, IL-6, IL-17, and interferon-gamma, is also increased. The number of CD4+ T cells increases in UC patients. St6gal1 gene knockout (St6gal1-/- ) rats are established by clustered regularly interspaced short palindromic repeats (CRISPR)-associated gene knockout system. St6gal1 deficiency reduces the levels of pro-inflammatory cytokines and alleviates colitis symptoms in UC model rats. Ablation of α2,6-sialylation inhibits the transport of the TCR to lipid rafts and suppresses CD4+ T-cell activation. The attenuation of TCR signaling downregulates the expression of NF-κB in ST6GAL1-/- CD4+ T-cells. Moreover, NF-κB could bind to the ST6GAL1 promoter to increase its transcription. Ablation of ST6GAL1 downregulates the expression of NF-κB and reduces the production of proinflammatory cytokines to relieve UC pathogenesis, which is a potential novel target for the clinical treatment of UC.
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Affiliation(s)
- Qingjie Fan
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular ImmunopathologyShantou University Medical CollegeShantouGuangdong515041China
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Mechou Li
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Weiwei Zhao
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Kaixin Zhang
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Ming Li
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Wenzhe Li
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular ImmunopathologyShantou University Medical CollegeShantouGuangdong515041China
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Al Saoud R, Hamrouni A, Idris A, Mousa WK, Abu Izneid T. Recent advances in the development of sialyltransferase inhibitors to control cancer metastasis: A comprehensive review. Biomed Pharmacother 2023; 165:115091. [PMID: 37421784 DOI: 10.1016/j.biopha.2023.115091] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/10/2023] Open
Abstract
Metastasis accounts for the majority of cancer-associated mortalities, representing a huge health and economic burden. One of the mechanisms that enables metastasis is hypersialylation, characterized by an overabundance of sialylated glycans on the tumor surface, which leads to repulsion and detachment of cells from the original tumor. Once the tumor cells are mobilized, sialylated glycans hijack the natural killer T-cells through self-molecular mimicry and activatea downstream cascade of molecular events that result in inhibition of cytotoxicity and inflammatory responses against cancer cells, ultimately leading to immune evasion. Sialylation is mediated by a family of enzymes known as sialyltransferases (STs), which catalyse the transfer of sialic acid residue from the donor, CMP-sialic acid, onto the terminal end of an acceptor such as N-acetylgalactosamine on the cell-surface. Upregulation of STs increases tumor hypersialylation by up to 60% which is considered a distinctive hallmark of several types of cancers such as pancreatic, breast, and ovarian cancer. Therefore, inhibiting STs has emerged as a potential strategy to prevent metastasis. In this comprehensive review, we discuss the recent advances in designing novel sialyltransferase inhibitors using ligand-based drug design and high-throughput screening of natural and synthetic entities, emphasizing the most successful approaches. We analyse the limitations and challenges of designing selective, potent, and cell-permeable ST inhibitors that hindered further development of ST inhibitors into clinical trials. We conclude by analysing emerging opportunities, including advanced delivery methods which further increase the potential of these inhibitors to enrich the clinics with novel therapeutics to combat metastasis.
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Affiliation(s)
- Ranim Al Saoud
- Pharmaceutical Sciences Program, College of Pharmacy, Al Ain University, P.O. Box 112612, Al Ain, Abu Dhabi, United Arab Emirates; AAU Health and Biomedical Research Center, Al Ain University, P.O. Box 112612, Abu Dhabi, United Arab Emirates
| | - Amar Hamrouni
- Pharmaceutical Sciences Program, College of Pharmacy, Al Ain University, P.O. Box 112612, Al Ain, Abu Dhabi, United Arab Emirates; AAU Health and Biomedical Research Center, Al Ain University, P.O. Box 112612, Abu Dhabi, United Arab Emirates
| | - Adi Idris
- School of Biomedical Sciences, Queensland University of Technology, Gardens Point, QLD, Australia; School of Pharmacy and Medical Science, Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia
| | - Walaa K Mousa
- Pharmaceutical Sciences Program, College of Pharmacy, Al Ain University, P.O. Box 112612, Al Ain, Abu Dhabi, United Arab Emirates; AAU Health and Biomedical Research Center, Al Ain University, P.O. Box 112612, Abu Dhabi, United Arab Emirates
| | - Tareq Abu Izneid
- Pharmaceutical Sciences Program, College of Pharmacy, Al Ain University, P.O. Box 112612, Al Ain, Abu Dhabi, United Arab Emirates; AAU Health and Biomedical Research Center, Al Ain University, P.O. Box 112612, Abu Dhabi, United Arab Emirates.
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29
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Guerrero-Flores GN, Pacheco FJ, Boskovic DS, Pacheco SOS, Zhang G, Fraser GE, Miles FL. Sialic acids Neu5Ac and KDN in adipose tissue samples from individuals following habitual vegetarian or non-vegetarian dietary patterns. Sci Rep 2023; 13:12593. [PMID: 37537165 PMCID: PMC10400564 DOI: 10.1038/s41598-023-38102-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 06/30/2023] [Indexed: 08/05/2023] Open
Abstract
Sialic acids (Sias) are a class of sugar molecules with a parent nine-carbon neuraminic acid, generally present at the ends of carbohydrate chains, either attached to cellular surfaces or as secreted glycoconjugates. Given their position and structural diversity, Sias modulate a wide variety of biological processes. However, little is known about the role of Sias in human adipose tissue, or their implications for health and disease, particularly among individuals following different dietary patterns. The goal of this study was to measure N-Acetylneuraminic acid (Neu5Ac), N-Glycolylneuraminic acid (Neu5Gc), and 2-keto-3-deoxy-D-glycero-D-galacto-nononic acid (KDN) concentrations in adipose tissue samples from participants in the Adventist Health Study-2 (AHS-2) and to compare the abundance of these Sias in individuals following habitual, long-term vegetarian or non-vegetarian dietary patterns. A method was successfully developed for the extraction and detection of Sias in adipose tissue. Sias levels were quantified in 52 vegans, 56 lacto-vegetarians, and 48 non-vegetarians using LC-MS/MS with Neu5Ac-D-1,2,3-13C3 as an internal standard. Dietary groups were compared using linear regression. Vegans and lacto-ovo-vegetarians had significantly higher concentrations of Neu5Ac relative to non-vegetarians. While KDN levels tended to be higher in vegans and lacto-ovo-vegetarians, these differences were not statistically significant. However, KDN levels were significantly inversely associated with body mass index. In contrast, Neu5Gc was not detected in human adipose samples. It is plausible that different Neu5Ac concentrations in adipose tissues of vegetarians, compared to those of non-vegetarians, reflect a difference in the baseline inflammatory status between the two groups. Epidemiologic studies examining levels of Sias in human adipose tissue and other biospecimens will help to further explore their roles in development and progression of inflammatory conditions and chronic diseases.
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Affiliation(s)
- Gerardo N Guerrero-Flores
- Interdisciplinary Center for Research in Health and Behavioral Sciences, School of Medicine, Universidad Adventista del Plata, 3103, Libertador San Martín, Entre Ríos, Argentina
- Faculty of Medical Sciences, Universidad Nacional de Rosario (UNR), 3100, Rosario, Argentina
| | - Fabio J Pacheco
- Interdisciplinary Center for Research in Health and Behavioral Sciences, School of Medicine, Universidad Adventista del Plata, 3103, Libertador San Martín, Entre Ríos, Argentina
- Institute for Food Science and Nutrition, Universidad Adventista del Plata, 3103, Libertador San Martín, Entre Ríos, Argentina
| | - Danilo S Boskovic
- Division of Biochemistry, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Sandaly O S Pacheco
- Interdisciplinary Center for Research in Health and Behavioral Sciences, School of Medicine, Universidad Adventista del Plata, 3103, Libertador San Martín, Entre Ríos, Argentina
- Institute for Food Science and Nutrition, Universidad Adventista del Plata, 3103, Libertador San Martín, Entre Ríos, Argentina
| | - Guangyu Zhang
- Division of Biochemistry, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Gary E Fraser
- Center for Nutrition, Healthy Lifestyles and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA, 92350, USA
- Adventist Health Study, Loma Linda University, Loma Linda, CA, 92350, USA
- Department of Medicine, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Fayth L Miles
- Division of Biochemistry, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA.
- Center for Nutrition, Healthy Lifestyles and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA, 92350, USA.
- Adventist Health Study, Loma Linda University, Loma Linda, CA, 92350, USA.
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Zhao S, Yang Y, Wang Y, Liu H, Ju H, Chen Y. In situ evaluation of in vivo sialylation with a dual-color imaging strategy. Chem Commun (Camb) 2023; 59:7815-7818. [PMID: 37272281 DOI: 10.1039/d3cc01949g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work designs a functional dendrimer probe to conveniently identify newly generated sialic acid groups in vivo with a dual-color imaging strategy, which achieves in situ semiquantitative evaluation of the sialylation difference between tumor and normal tissues to reveal sialylation-related biological events and promote clinical tumor diagnosis.
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Affiliation(s)
- Shiya Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Yuanjiao Yang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Yuru Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Huipu Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Yunlong Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
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Zhou X, Chi K, Zhang C, Liu Q, Yang G. Sialylation: A Cloak for Tumors to Trick the Immune System in the Microenvironment. BIOLOGY 2023; 12:832. [PMID: 37372117 DOI: 10.3390/biology12060832] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/03/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023]
Abstract
The tumor microenvironment (TME), where the tumor cells incite the surrounding normal cells to create an immune suppressive environment, reduces the effectiveness of immune responses during cancer development. Sialylation, a type of glycosylation that occurs on cell surface proteins, lipids, and glycoRNAs, is known to accumulate in tumors and acts as a "cloak" to help tumor cells evade immunological surveillance. In the last few years, the role of sialylation in tumor proliferation and metastasis has become increasingly evident. With the advent of single-cell and spatial sequencing technologies, more research is being conducted to understand the effects of sialylation on immunity regulation. This review provides updated insights into recent research on the function of sialylation in tumor biology and summarizes the latest developments in sialylation-targeted tumor therapeutics, including antibody-mediated and metabolic-based sialylation inhibition, as well as interference with sialic acid-Siglec interaction.
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Affiliation(s)
- Xiaoman Zhou
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Kaijun Chi
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Chairui Zhang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Quan Liu
- Department of Medical Oncology, Affiliated Hospital of Jiangnan University, Wuxi 214122, China
| | - Ganglong Yang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
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Leusmann S, Ménová P, Shanin E, Titz A, Rademacher C. Glycomimetics for the inhibition and modulation of lectins. Chem Soc Rev 2023; 52:3663-3740. [PMID: 37232696 PMCID: PMC10243309 DOI: 10.1039/d2cs00954d] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Indexed: 05/27/2023]
Abstract
Carbohydrates are essential mediators of many processes in health and disease. They regulate self-/non-self- discrimination, are key elements of cellular communication, cancer, infection and inflammation, and determine protein folding, function and life-times. Moreover, they are integral to the cellular envelope for microorganisms and participate in biofilm formation. These diverse functions of carbohydrates are mediated by carbohydrate-binding proteins, lectins, and the more the knowledge about the biology of these proteins is advancing, the more interfering with carbohydrate recognition becomes a viable option for the development of novel therapeutics. In this respect, small molecules mimicking this recognition process become more and more available either as tools for fostering our basic understanding of glycobiology or as therapeutics. In this review, we outline the general design principles of glycomimetic inhibitors (Section 2). This section is then followed by highlighting three approaches to interfere with lectin function, i.e. with carbohydrate-derived glycomimetics (Section 3.1), novel glycomimetic scaffolds (Section 3.2) and allosteric modulators (Section 3.3). We summarize recent advances in design and application of glycomimetics for various classes of lectins of mammalian, viral and bacterial origin. Besides highlighting design principles in general, we showcase defined cases in which glycomimetics have been advanced to clinical trials or marketed. Additionally, emerging applications of glycomimetics for targeted protein degradation and targeted delivery purposes are reviewed in Section 4.
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Affiliation(s)
- Steffen Leusmann
- Chemical Biology of Carbohydrates (CBCH), Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, 66123 Saarbrücken, Germany.
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany
| | - Petra Ménová
- University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic
| | - Elena Shanin
- Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, University of Vienna, Biocenter 5, 1030 Vienna, Austria
| | - Alexander Titz
- Chemical Biology of Carbohydrates (CBCH), Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, 66123 Saarbrücken, Germany.
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany
| | - Christoph Rademacher
- Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, University of Vienna, Biocenter 5, 1030 Vienna, Austria
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Hu X, Li Y, Chen Q, Wang T, Ma L, Zhang W, Yu R, Zhang J, Wan J, Yu C, Yuan Z. Sialic acids promote macrophage M1 polarization and atherosclerosis by upregulating ROS and autophagy blockage. Int Immunopharmacol 2023; 120:110410. [PMID: 37270929 DOI: 10.1016/j.intimp.2023.110410] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 05/10/2023] [Accepted: 05/28/2023] [Indexed: 06/06/2023]
Abstract
Accumulating evidence suggests that sialic acids is closely related to atherosclerosis. However, the effects and underlying mechanisms of sialic acids in atherosclerosis have been not defined. Macrophages are one of the most important cells during plaque progression. In this study, we investigated the role of sialic acids in the M1 macrophage polarization and pathogenesis of atherosclerosis. Here we found that sialic acids can promote the polarization of RAW264.7 cells to the M1 phenotype, thereby promoting the expression of proinflammatory cytokines in vitro. The proinflammatory effect of sialic acids may result from the inhibition of LKB1-AMPK-Sirt3 signaling pathway to upregulate intracellular ROS and impairing autophagy-lysosome system to block autophagic flux. In the APOE-/- mice, sialic acids in plasma increased during the development of atherosclerosis. Moreover, exogenous supplement of sialic acids can promote plaque progression in aortic arch and aortic sinus being accompanied by the differentiation of macrophages into M1 type in peripheral tissues. These studies demonstrated that sialic acids can promote macrophage polarization toward the M1 phenotype to accentuate atherosclerosis via inducing mitochondrial ROS and blocking autophagy, thus providing clue to a novel therapeutic strategy for atherosclerosis.
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Affiliation(s)
- Xuemei Hu
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Yueyue Li
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Qingyang Chen
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Tingting Wang
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Limei Ma
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Wanping Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Ruihong Yu
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Jun Zhang
- Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Jingyuan Wan
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Chao Yu
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Zhiyi Yuan
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory for Pharmaceutical Metabolism Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
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Abstract
Sialic acids (Sias), a group of over 50 structurally distinct acidic saccharides on the surface of all vertebrate cells, are neuraminic acid derivatives. They serve as glycan chain terminators in extracellular glycolipids and glycoproteins. In particular, Sias have significant implications in cell-to-cell as well as host-to-pathogen interactions and participate in various biological processes, including neurodevelopment, neurodegeneration, fertilization, and tumor migration. However, Sia is also present in some of our daily diets, particularly in conjugated form (sialoglycans), such as those in edible bird's nest, red meats, breast milk, bovine milk, and eggs. Among them, breast milk, especially colostrum, contains a high concentration of sialylated oligosaccharides. Numerous reviews have concentrated on the physiological function of Sia as a cellular component of the body and its relationship with the occurrence of diseases. However, the consumption of Sias through dietary sources exerts significant influence on human health, possibly by modulating the gut microbiota's composition and metabolism. In this review, we summarize the distribution, structure, and biological function of particular Sia-rich diets, including human milk, bovine milk, red meat, and egg.
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Affiliation(s)
- Tiantian Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Jianrong Wu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Xiaobei Zhan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
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La Rocca P, Lavota I, Piccoli M, Cirillo F, Ghiroldi A, Ciconte G, Pappone C, Allevi P, Rota P, Anastasia L. Analysis of the intramolecular 1,7-lactone of N-acetylneuraminic acid using HPLC-MS: relationship between detection and stability. Glycoconj J 2023; 40:343-354. [PMID: 37084126 DOI: 10.1007/s10719-023-10114-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/30/2023] [Indexed: 04/22/2023]
Abstract
A subclass of the sialic acid family consists of intramolecular lactones that may function as key indicators of physiological and pathological states. However, the existence of these compounds in free form is highly improbable, since they are unlikely to exist in an aqueous solution due to their lability. Current analytical method used to detect them in biological fluids has not recognized their reactivity in solution and is prone to misidentification. However, recent advances in synthetic methods for 1,7-lactones have allowed the preparation of these sialic acid derivatives as authentic reference standards. We report here the development of a new HPLC-MS method for the simultaneous detection of the 1,7-lactone of N-acetylneuraminic acid, its γ-lactone derivative, and N-acetylneuraminic acid that overcomes the limitations of the previous analytical procedure for their identification.
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Affiliation(s)
- Paolo La Rocca
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, 20133, Italy
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy
| | - Ivana Lavota
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy
| | - Marco Piccoli
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy
- Laboratory of Stem Cells for Tissue Engineering, IRCCS Policlinico San Donato, San Donato Milanese, Milan, 20097, Italy
| | - Federica Cirillo
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy
- Laboratory of Stem Cells for Tissue Engineering, IRCCS Policlinico San Donato, San Donato Milanese, Milan, 20097, Italy
| | - Andrea Ghiroldi
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy
- Laboratory of Stem Cells for Tissue Engineering, IRCCS Policlinico San Donato, San Donato Milanese, Milan, 20097, Italy
| | - Giuseppe Ciconte
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy
- Arrhythmology Department, IRCCS Policlinico San Donato, San Donato Milanese, Milan, 20097, Italy
| | - Carlo Pappone
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy
- Arrhythmology Department, IRCCS Policlinico San Donato, San Donato Milanese, Milan, 20097, Italy
- Faculty of Medicine, University of Vita-Salute San Raffaele, 20132, Milan, Italy
| | - Pietro Allevi
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, 20133, Italy
| | - Paola Rota
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy.
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, 20133, Italy.
| | - Luigi Anastasia
- Institute for Molecular and Translational Cardiology (IMTC), San Donato Milanese, Milan, 20097, Italy.
- Laboratory of Stem Cells for Tissue Engineering, IRCCS Policlinico San Donato, San Donato Milanese, Milan, 20097, Italy.
- Faculty of Medicine, University of Vita-Salute San Raffaele, 20132, Milan, Italy.
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Gollapudi S, Jamal S, Kamatar A, Yuan F, Wang L, Lafer EM, Belardi B, Stachowiak JC. Steric pressure between glycosylated transmembrane proteins inhibits internalization by endocytosis. Proc Natl Acad Sci U S A 2023; 120:e2215815120. [PMID: 37023126 PMCID: PMC10104535 DOI: 10.1073/pnas.2215815120] [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: 09/15/2022] [Accepted: 03/02/2023] [Indexed: 04/07/2023] Open
Abstract
Clathrin-mediated endocytosis is essential for the removal of transmembrane proteins from the plasma membrane in all eukaryotic cells. Many transmembrane proteins are glycosylated. These proteins collectively comprise the glycocalyx, a sugar-rich layer at the cell surface, which is responsible for intercellular adhesion and recognition. Previous work has suggested that glycosylation of transmembrane proteins reduces their removal from the plasma membrane by endocytosis. However, the mechanism responsible for this effect remains unknown. To study the impact of glycosylation on endocytosis, we replaced the ectodomain of the transferrin receptor, a well-studied transmembrane protein that undergoes clathrin-mediated endocytosis, with the ectodomain of MUC1, which is highly glycosylated. When we expressed this transmembrane fusion protein in mammalian epithelial cells, we found that its recruitment to endocytic structures was substantially reduced in comparison to a version of the protein that lacked the MUC1 ectodomain. This reduction could not be explained by a loss of mobility on the cell surface or changes in endocytic dynamics. Instead, we found that the bulky MUC1 ectodomain presented a steric barrier to endocytosis. Specifically, the peptide backbone of the ectodomain and its glycosylation each made steric contributions, which drove comparable reductions in endocytosis. These results suggest that glycosylation constitutes a biophysical signal for retention of transmembrane proteins at the plasma membrane. This mechanism could be modulated in multiple disease states that exploit the glycocalyx, from cancer to atherosclerosis.
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Affiliation(s)
- Sadhana Gollapudi
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX
| | - Sabah Jamal
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX
| | - Advika Kamatar
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX
| | - Feng Yuan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX
| | - Liping Wang
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX
| | - Eileen M. Lafer
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX
| | - Brian Belardi
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX
| | - Jeanne C. Stachowiak
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX
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Cao X, Yang X, Xiao M, Jiang X. Molecular Dynamics Simulations Reveal the Conformational Transition of GH33 Sialidases. Int J Mol Sci 2023; 24:ijms24076830. [PMID: 37047800 PMCID: PMC10095477 DOI: 10.3390/ijms24076830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 04/14/2023] Open
Abstract
Sialidases are increasingly used in the production of sialyloligosaccharides, a significant component of human milk oligosaccharides. Elucidating the catalytic mechanism of sialidases is critical for the rational design of better biocatalysts, thereby facilitating the industrial production of sialyloligosaccharides. Through comparative all-atom molecular dynamics simulations, we investigated the structural dynamics of sialidases in Glycoside Hydrolase family 33 (GH33). Interestingly, several sialidases displayed significant conformational transition and formed a new cleft in the simulations. The new cleft was adjacent to the innate active site of the enzyme, which serves to accommodate the glycosyl acceptor. Furthermore, the residues involved in the specific interactions with the substrate were evolutionarily conserved in the whole GH33 family, highlighting their key roles in the catalysis of GH33 sialidases. Our results enriched the catalytic mechanism of GH33 sialidases, with potential implications in the rational design of sialidases.
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Affiliation(s)
- Xueting Cao
- National Glycoengineering Research Center, Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate-Based Medicine, Shandong University, Qingdao 266237, China
| | - Xiao Yang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Min Xiao
- National Glycoengineering Research Center, Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate-Based Medicine, Shandong University, Qingdao 266237, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Xukai Jiang
- National Glycoengineering Research Center, Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate-Based Medicine, Shandong University, Qingdao 266237, China
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38
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Bose P, Jaiswal MK, Singh SK, Singh RK, Tiwari VK. Growing impact of sialic acid-containing glycans in future drug discovery. Carbohydr Res 2023; 527:108804. [PMID: 37031650 DOI: 10.1016/j.carres.2023.108804] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/21/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023]
Abstract
In nature, almost all cells are covered with a complex array of glycan chain namely sialic acids or nuraminic acids, a negatively charged nine carbon sugars which is considered for their great therapeutic importance since long back. Owing to its presence at the terminal end of lipid bilayer (commonly known as terminal sugars), the well-defined sialosides or sialoconjugates have served pivotal role on the cell surfaces and thus, the sialic acid-containing glycans can modulate and mediate a number of imperative cellular interactions. Understanding of the sialo-protein interaction and their roles in vertebrates in regard of normal physiology, pathological variance, and evolution has indeed a noteworthy journey in medicine. In this tutorial review, we present a concise overview about the structure, linkages in chemical diversity, biological significance followed by chemical and enzymatic modification/synthesis of sialic acid containing glycans. A more focus is attempted about the recent advances, opportunity, and more over growing impact of sialosides and sialoconjugates in future drug discovery and development.
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Zhang L, Li Y, Li R, Yang X, Zheng Z, Fu J, Yu H, Chen X. Glycoprotein In Vitro N-Glycan Processing Using Enzymes Expressed in E. coli. Molecules 2023; 28:2753. [PMID: 36985724 PMCID: PMC10051842 DOI: 10.3390/molecules28062753] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/05/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Protein N-glycosylation is a common post-translational modification that plays significant roles on the structure, property, and function of glycoproteins. Due to N-glycan heterogeneity of naturally occurring glycoproteins, the functions of specific N-glycans on a particular glycoprotein are not always clear. Glycoprotein in vitro N-glycan engineering using purified recombinant enzymes is an attractive strategy to produce glycoproteins with homogeneous N-glycoforms to elucidate the specific functions of N-glycans and develop better glycoprotein therapeutics. Toward this goal, we have successfully expressed in E. coli glycoside hydrolases and glycosyltransferases from bacterial and human origins and developed a robust enzymatic platform for in vitro processing glycoprotein N-glycans from high-mannose-type to α2-6- or α2-3-disialylated biantennary complex type. The recombinant enzymes are highly efficient in step-wise or one-pot reactions. The platform can find broad applications in N-glycan engineering of therapeutic glycoproteins.
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Affiliation(s)
| | | | | | | | | | | | | | - Xi Chen
- Department of Chemistry, University of California, Davis, CA 95616, USA
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Chen X, Varki A. User-friendly bioorthogonal reactions click to explore glycan functions in complex biological systems. J Clin Invest 2023; 133:e169408. [PMID: 36919701 PMCID: PMC10014101 DOI: 10.1172/jci169408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Affiliation(s)
- Xi Chen
- Department of Chemistry, UCD, Davis, California, USA
| | - Ajit Varki
- Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center, UCSD, San Diego, California, USA
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41
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Azcutia V, Kelm M, Fink D, Cummings RD, Nusrat A, Parkos CA, Brazil JC. Sialylation regulates neutrophil transepithelial migration, CD11b/CD18 activation, and intestinal mucosal inflammatory function. JCI Insight 2023; 8:e167151. [PMID: 36719745 PMCID: PMC10077474 DOI: 10.1172/jci.insight.167151] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/25/2023] [Indexed: 02/01/2023] Open
Abstract
Polymorphonuclear neutrophils (PMNs) play a critical role in clearing invading microbes and promoting tissue repair following infection/injury. However, dysregulated PMN trafficking and associated tissue damage is pathognomonic of numerous inflammatory mucosal diseases. The final step in PMN influx into mucosal lined organs (including the lungs, kidneys, skin, and gut) involves transepithelial migration (TEpM). The β2-integrin CD11b/CD18 plays an important role in mediating PMN intestinal trafficking, with recent studies highlighting that terminal fucose and GlcNAc glycans on CD11b/CD18 can be targeted to reduce TEpM. However, the role of the most abundant terminal glycan, sialic acid (Sia), in regulating PMN epithelial influx and mucosal inflammatory function is not well understood. Here we demonstrate that inhibiting sialidase-mediated removal of α2-3-linked Sia from CD11b/CD18 inhibits PMN migration across intestinal epithelium in vitro and in vivo. Sialylation was also found to regulate critical PMN inflammatory effector functions, including degranulation and superoxide release. Finally, we demonstrate that sialidase inhibition reduces bacterial peptide-mediated CD11b/CD18 activation in PMN and blocks downstream intracellular signaling mediated by spleen tyrosine kinase (Syk) and p38 MAPK. These findings suggest that sialylated glycans on CD11b/CD18 represent potentially novel targets for ameliorating PMN-mediated tissue destruction in inflammatory mucosal diseases.
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Affiliation(s)
- Veronica Azcutia
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Matthias Kelm
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Dylan Fink
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Richard D. Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Asma Nusrat
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Charles A. Parkos
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Jennifer C. Brazil
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
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42
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Gadi MR, Chen C, Bao S, Wang S, Guo Y, Han J, Xiao W, Li L. Convergent chemoenzymatic synthesis of O-GalNAc rare cores 5, 7, 8 and their sialylated forms. Chem Sci 2023; 14:1837-1843. [PMID: 36819867 PMCID: PMC9931048 DOI: 10.1039/d2sc06925c] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
All O-GalNAc glycans are derived from 8 cores with 2 or 3 monosaccharides linked via α- or β-glycosidic bonds. While chemical and chemoenzymatic syntheses of β-linked cores 1-4 and 6 and derived glycans have been well developed, the preparation of α-linked rare cores 5, 7, and 8 is challenging due to the presence of this 1,2-cis linkage. Meanwhile, the biosynthesis and functional roles of these structures are poorly understood. Herein, we synthesize 3 α-linked rare cores with exclusive α-configuration from a versatile precursor through multifaceted chemical modulations. Efficient regioselective α2-6sialylion of the rare cores was then achieved by Photobacterium damselae α2-6sialyltransferase-catalyzed reactions. These structures, together with β-linked cores 1-4 and 6, and their sialylated forms, were fabricated into a comprehensive O-GalNAc core microarray to profile the binding of clinically important GalNAc-specific lectins. It is found that only Tn, (sialyl-)core 5, and core 7 are the binders of WFL, VVL, and SBA, while DBA only recognized (sialyl-)core 5, and Jacalin is the only lectin that binds core 8. In addition, activity assays of human α-N-acetylgalactosaminide α2-6sialyltransferases (ST6GalNAcTs) towards the cores suggested that ST6GalNAc1 may be involved in the biosynthesis of previously identified sialyl-core 5 and sialyl-core 8 glycans. In conclusion, we provide efficient routes to access α-linked O-GalNAc rare cores and derived structures, which are valuable tools for functional glycomics studies of mucin O-glycans.
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Affiliation(s)
- Madhusudhan Reddy Gadi
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University Atlanta GA 30303 USA
| | - Congcong Chen
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University Atlanta GA 30303 USA
- Shandong Academy of Pharmaceutical Science, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs Jinan 250101 China
| | - Shumin Bao
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University Atlanta GA 30303 USA
| | - Shuaishuai Wang
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University Atlanta GA 30303 USA
| | - Yuxi Guo
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University Atlanta GA 30303 USA
| | - Jinghua Han
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University Atlanta GA 30303 USA
| | - Weidong Xiao
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine Indianapolis IN 46202 USA
| | - Lei Li
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University Atlanta GA 30303 USA
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43
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Tomás-Martínez S, Chen LM, Pabst M, Weissbrodt DG, van Loosdrecht MCM, Lin Y. Enrichment and application of extracellular nonulosonic acids containing polymers of Accumulibacter. Appl Microbiol Biotechnol 2023; 107:931-941. [PMID: 36484828 DOI: 10.1007/s00253-022-12326-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022]
Abstract
Pseudaminic and legionaminic acids are a subgroup of nonulosonic acids (NulOs) unique to bacterial species. There is a lack of advances in the study of these NulOs due to their complex synthesis and production. Recently, it was seen that "Candidatus Accumulibacter" can produce Pse or Leg analogues as part of its extracellular polymeric substances (EPS). In order to employ a "Ca. Accumulibacter" enrichment as production platform for bacterial sialic acids, it is necessary to determine which fractions of the EPS of "Ca. Accumulibacter" contain NulOs and how to enrich and/or isolate them. We extracted the EPS from granules enriched with "Ca. Accumulibcater" and used size-exclusion chromatography (SEC) to separate them into different molecular weight (MW) fractions. This separation resulted in two high molecular weight (> 5500 kDa) fractions dominated by polysaccharides, with a NulO content up to 4 times higher than the extracted EPS. This suggests that NulOs in "Ca. Accumulibacter" are likely located in high molecular weight polysaccharides. Additionally, it was seen that the extracted EPS and the NulO-rich fractions can bind and neutralize histones. This opens the possibility of EPS and NulO-rich fractions as potential source for sepsis treatment drugs. KEY POINTS: • NulOs in "Ca. Accumulibacter" are likely located in high MW polysaccharides • SEC allows to obtain high MW polysaccharide-rich fractions enriched with NulOs • EPS and the NulOs-rich fractions are a potential source for sepsis treatment drugs.
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Affiliation(s)
- Sergio Tomás-Martínez
- Department of Biotechnology, Delft University of Technology, Van Der Maasweg 9, 2629 HZ, Delft, The Netherlands.
| | - Le Min Chen
- Department of Biotechnology, Delft University of Technology, Van Der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - Martin Pabst
- Department of Biotechnology, Delft University of Technology, Van Der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - David G Weissbrodt
- Department of Biotechnology, Delft University of Technology, Van Der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - Mark C M van Loosdrecht
- Department of Biotechnology, Delft University of Technology, Van Der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - Yuemei Lin
- Department of Biotechnology, Delft University of Technology, Van Der Maasweg 9, 2629 HZ, Delft, The Netherlands
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44
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Wang Y, Yang Y, Guo J, Ju H, Chen Y. Tumor identification via in vivo portable Raman detection of sialic acid with a dual gold nanoprobe system. Chem Sci 2023; 14:923-927. [PMID: 36755728 PMCID: PMC9890552 DOI: 10.1039/d2sc05163j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022] Open
Abstract
A dual gold nanoprobe system was designed for in vivo portable Raman detection of sialic acid (SA) for tumor identification. The dual gold nanoprobe system contained two gold nanoprobes, Au10-DTTC/PEG-PBA and Au40-PEG-SA. Au10-DTTC/PEG-PBA was constructed on a 10 nm gold nanoparticle modified with 3,3'-diethylthia tricarbocyanine iodide (DTTCI) as the Raman reporter and 3-aminophenylboronic acid (APBA) through a thiol PEG succinimidyl carboxymethyl ester (HS-PEG-NHS) linker for specific recognition of SA. Au40-PEG-SA was constructed on a 40 nm gold nanoparticle modified with SA through HS-PEG-NHS. For in vivo detection of SA, Au10-DTTC/PEG-PBA and Au40-PEG-SA were subsequently injected into tumor xenografted mice with optimal interval and retention times. Through the specific recognition between PBA and SA, the conjugates of Au10-DTTC/PEG-PBA and Au40-PEG-SA formed in the tumor region emitted strong SERS signals of DTTC, which could be detected by a portable Raman detector. This work provides a convenient and portable method to detect SA in tumor xenografted mice, which is useful for family-stay identification and clinical cleavage of tumors.
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Affiliation(s)
- Yuru Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Yuanjiao Yang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Jingxing Guo
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of TechnologyWuhan 430070P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Yunlong Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
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45
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Dolan JP, Cosgrove SC, Miller GJ. Biocatalytic Approaches to Building Blocks for Enzymatic and Chemical Glycan Synthesis. JACS AU 2023; 3:47-61. [PMID: 36711082 PMCID: PMC9875253 DOI: 10.1021/jacsau.2c00529] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
While the field of biocatalysis has bloomed over the past 20-30 years, advances in the understanding and improvement of carbohydrate-active enzymes, in particular, the sugar nucleotides involved in glycan building block biosynthesis, have progressed relatively more slowly. This perspective highlights the need for further insight into substrate promiscuity and the use of biocatalysis fundamentals (rational design, directed evolution, immobilization) to expand substrate scopes toward such carbohydrate building block syntheses and/or to improve enzyme stability, kinetics, or turnover. Further, it explores the growing premise of using biocatalysis to provide simple, cost-effective access to stereochemically defined carbohydrate materials, which can undergo late-stage chemical functionalization or automated glycan synthesis/polymerization.
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Affiliation(s)
- Jonathan P. Dolan
- School of Chemical and Physical
Sciences & Centre for Glycosciences, Keele University, Keele, Staffordshire ST5 5BG, United Kingdom
| | - Sebastian C. Cosgrove
- School of Chemical and Physical
Sciences & Centre for Glycosciences, Keele University, Keele, Staffordshire ST5 5BG, United Kingdom
| | - Gavin J. Miller
- School of Chemical and Physical
Sciences & Centre for Glycosciences, Keele University, Keele, Staffordshire ST5 5BG, United Kingdom
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46
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Red Meat Derived Glycan, N-acetylneuraminic Acid (Neu5Ac) Is a Major Sialic Acid in Different Skeletal Muscles and Organs of Nine Animal Species-A Guideline for Human Consumers. Foods 2023; 12:foods12020337. [PMID: 36673429 PMCID: PMC9858279 DOI: 10.3390/foods12020337] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/29/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
Sialic acids (Sias) are acidic monosaccharides and red meat is a notable dietary source of Sia for humans. Among the Sias, N-acetylneuraminic acid (Neu5Ac) and 2-keto-3-deoxy-D-glycero-D-galacto-2-nonulosonic acid (KDN) play multiple roles in immunity and brain cognition. On the other hand, N-glycolylneuraminic acid (Neu5Gc) is a non-human Sia capable of potentiating cancer and inflammation in the human body. However, their expression within the animal kingdom remains unknown. We determined Neu5Ac and KDN in skeletal muscle and organs across a range (n = 9) of species using UHPLC and found that (1) caprine skeletal muscle expressed the highest Neu5Ac (661.82 ± 187.96 µg/g protein) following by sheep, pig, dog, deer, cat, horse, kangaroo and cattle; (2) Among organs, kidney contained the most Neu5Ac (1992−3050 µg/g protein) across species; (3) ~75−98% of total Neu5Ac was conjugated, except for in dog and cat muscle (54−58%); (4) <1% of total Sia was KDN, in which ~60−100% was unconjugated, with the exception of sheep liver and goat muscle (~12−25%); (5) Neu5Ac was the major Sia in almost all tested organs. This study guides consumers to the safest red meat relating to Neu5Ac and Neu5Gc content, though the dog and cat meat are not conventional red meat globally.
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47
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Li J, Bi Z, Wang L, Xia Y, Xie Y, Liu Y. Recent Advances in Strategies for Imaging Detection and Intervention of Cellular Senescence. Chembiochem 2023; 24:e202200364. [PMID: 36163425 DOI: 10.1002/cbic.202200364] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/14/2022] [Indexed: 01/10/2023]
Abstract
Cellular senescence is a stable cell cycle arrest state that can be triggered by a wide range of intrinsic or extrinsic stresses. Increased burden of senescent cells in various tissues is thought to contribute to aging and age-related diseases. Thus, the detection and interventions of senescent cells are critical for longevity and treatment of disease. However, the highly heterogeneous feature of senescence makes it challenging for precise detection and selective clearance of senescent cells in different age-related diseases. To address this issue, considerable efforts have been devoted to developing senescence-targeting molecular theranostic strategies, based on the potential biomarkers of cellular senescence. Herein, we review recent advances in the field of anti-senescence research and highlight the specific visualization and elimination of senescent cells. Additionally, the challenges in this emerging field are outlined.
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Affiliation(s)
- Jili Li
- Molecular Science and Biomedicine Laboratory (MBL) State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering Aptamer Engineering Center of Hunan Province Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Zhengyan Bi
- Molecular Science and Biomedicine Laboratory (MBL) State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering Aptamer Engineering Center of Hunan Province Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Linlin Wang
- Molecular Science and Biomedicine Laboratory (MBL) State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering Aptamer Engineering Center of Hunan Province Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Yinghao Xia
- Molecular Science and Biomedicine Laboratory (MBL) State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering Aptamer Engineering Center of Hunan Province Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Yuqi Xie
- Molecular Science and Biomedicine Laboratory (MBL) State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering Aptamer Engineering Center of Hunan Province Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Yanlan Liu
- Molecular Science and Biomedicine Laboratory (MBL) State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering Aptamer Engineering Center of Hunan Province Hunan University, Changsha, Hunan, 410082, P. R. China
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48
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Liu C, Lv X, Li J, Liu L, Du G, Liu Y. Metabolic Engineering of Escherichia coli for Increased Bioproduction of N-Acetylneuraminic Acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:15859-15868. [PMID: 36475707 DOI: 10.1021/acs.jafc.2c05994] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
N-Acetylneuraminic acid (NeuAc) is widely used in the food and pharmaceutical industries. Therefore, it is important to develop an efficient and eco-friendly method for NeuAc production. Here, we achieved de novo biosynthesis of NeuAc in an engineered plasmid-free Escherichia coli strain, which efficiently synthesizes NeuAc using glycerol as the sole carbon source, via clustered regularly interspaced palindromic repeat (CRISPR)/CRISPR-associated protein 9-based genome editing. NeuAc key precursor, N-acetylmannosamine (ManNAc; 0.40 g/L), was produced by expressing UDP-N-acetylglucosamine-2-epimerase and glucosamine-6-phosphate synthase (GlmS) mutants and blocking the NeuAc catabolic pathway in E. coli BL21 (DE3). The expression levels of GlmM and GlmU-GlmSA metabolic modules were optimized, significantly increasing the ManNAc titer to 8.95 g/L. Next, the expression levels of NeuAc synthase from different microorganisms were optimized, leading to the production of 6.27 g/L of NeuAc. Blocking the competing pathway of NeuAc biosynthesis increased the NeuAc titer to 9.65 g/L. In fed-batch culture in a 3 L fermenter, NeuAc titer reached 23.46 g/L with productivity of 0.69 g/L/h, which is the highest level achieved by microbial synthesis using glycerol as the sole carbon source in E. coli. The strategies used in our study can aid in the efficient bioproduction of NeuAc and its derivatives.
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Affiliation(s)
- Chang Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xueqin Lv
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Yanfeng Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
- Qingdao Special Food Research Institute, Qingdao 266109, China
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49
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Bozzola T, Johnsson RE, Nilsson UJ, Ellervik U. Sialic Acid 4-N-Piperazine and Piperidine Derivatives Bind with High Affinity to the P. mirabilis Sialic Acid Sodium Solute Symporter. ChemMedChem 2022; 17:e202200351. [PMID: 36121381 PMCID: PMC10092485 DOI: 10.1002/cmdc.202200351] [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: 06/30/2022] [Revised: 09/16/2022] [Indexed: 01/14/2023]
Abstract
In search for novel antibacterial compounds, bacterial sialic acid uptake inhibition represents a promising strategy. Sialic acid plays a critical role for growth and colonisation of several pathogenic bacteria, and its uptake inhibition in bacteria was recently demonstrated to be a viable strategy by targeting the SiaT sodium solute symporters from Proteus mirabilis and Staphylococcus aureus. Here we report the design, synthesis and evaluation of potential sialic acid uptake inhibitors bearing 4-N-piperidine and piperazine moieties. The 4-N-derivatives were obtained via 4-N-functionalization with piperidine and piperazine nucleophiles in an efficient direct substitution of the 4-O-acetate of Neu5Ac. Evaluation for binding to bacterial transport proteins with nanoDSF and ITC revealed compounds possessing nanomolar affinity for the P. mirabilis SiaT symporter. Computational analyses indicate the engagement of a previously untargeted portion of the binding site.
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Affiliation(s)
- Tiago Bozzola
- Department of Chemistry, Lund University, P.O. Box 124, 221 00, Lund, Sweden
| | | | - Ulf J Nilsson
- Department of Chemistry, Lund University, P.O. Box 124, 221 00, Lund, Sweden
| | - Ulf Ellervik
- Department of Chemistry, Lund University, P.O. Box 124, 221 00, Lund, Sweden
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50
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Konietzny PB, Peters H, Hofer ML, Gerling-Driessen UIM, de Vries RP, Peters T, Hartmann L. Enzymatic Sialylation of Synthetic Multivalent Scaffolds: From 3'-Sialyllactose Glycomacromolecules to Novel Neoglycosides. Macromol Biosci 2022; 22:e2200358. [PMID: 36112275 DOI: 10.1002/mabi.202200358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/12/1912] [Indexed: 01/15/2023]
Abstract
Sialoglycans play a key role in many biological recognition processes and sialylated conjugates of various types have successfully been applied, e.g., as antivirals or in antitumor therapy. A key feature for high affinity binding of such conjugates is the multivalent presentation of sialoglycans which often possess synthetic challenges. Here, the combination is described of solid phase polymer synthesis and enzymatic sialylation yielding 3'-sialyllactose-presenting precision glycomacromolecules. CMP-Neu5Ac synthetase from Neisseria meningitidis (NmCSS) and sialyltransferase from Pasteurella multocida (PmST1) are combined in a one-pot reaction giving access to sequence-defined sialylated macromolecules. Surprisingly, when employing Tris(hydroxymethyl)aminomethane (Tris) as a buffer, formation of significant amounts of α-linked Tris-sialoside is observed as a side reaction. Further exploring and exploiting this unusual sialylation reaction, different neoglycosidic structures are synthesized showing that PmST1 can be used to derive both, sialylation on natural carbohydrates as well as on synthetic hydroxylated scaffolds.
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Affiliation(s)
- Patrick B Konietzny
- Department of Organic and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Hannelore Peters
- Institute of Chemistry and Metabolomics, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Marc L Hofer
- Department of Organic and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Ulla I M Gerling-Driessen
- Department of Organic and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Robert P de Vries
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, 3584 CG, The Netherlands
| | - Thomas Peters
- Institute of Chemistry and Metabolomics, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Laura Hartmann
- Department of Organic and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
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