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Le Q, Zhang Z, Sun D, Cui Q, Yang X, Hassan AE. Anti-inflammatory activities of two new deoxygenated N-acetyl glucosamines in lipopolysaccharide-activated mouse macrophage RAW264.7 cells. Heliyon 2023; 9:e15769. [PMID: 37159698 PMCID: PMC10163627 DOI: 10.1016/j.heliyon.2023.e15769] [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: 09/08/2022] [Revised: 04/18/2023] [Accepted: 04/20/2023] [Indexed: 05/11/2023] Open
Abstract
Background Glucosamine and N-acetyl-glucosamine (NAG) are amino sugars found in human extracellular matrix with previously described anti-inflammatory effects. Despite mixed results from clinical studies, these molecules have been used extensively in supplements. Objective We investigated the anti-inflammatory properties of two synthesized derivatives of N-acetyl-glucosamine (NAG), bi-deoxy-N-acetyl-glucosamine (BNAG) 1 and 2. Methods Using mouse macrophage RAW 264.7 cells with lipopolysaccharide (LPS) to induce inflammation, the effects of NAG, BNAG 1, and BNAG 2 on the expression of IL-6, IL-1β, inducible nitric oxide synthase (iNOS) and COX-2 were studied using ELISA, Western blot and quantitative RT-PCR. Cell toxicity and nitric oxide (NO) production were evaluated using WST-1 assay and the Griess reagent, respectively. Results Among the three tested compounds, BNAG1 shows the highest inhibition of iNOS, IL-6, TNF α and IL-1β expression and NO production. All three tested compounds show slight inhibition on cell proliferation of RAW 264.7 cells, except that BNAG1 displays a remarkable toxicity at the tested maximum dose of 5 mM. Conclusion BNAG 1 and 2 exhibit notable anti-inflammatory effects compared to the parent NAG molecule.
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Affiliation(s)
- Quang Le
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
| | - Zhichang Zhang
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
- Dept of Orthopaedic Surgery, The First Affiliated Hospital of Xinxiang Medical University, Wehui, 453100, Henan, China
| | - Daniel Sun
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
| | - Quanjun Cui
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
| | - Xinlin Yang
- Dept of Orthopaedic Surgery, University of Virginia, 22903, USA
- Corresponding author. Department of Orthopaedic Surgery, University of Virginia, School of Medicine, 450 Ray C. Hunt Drive, Charlottesville, VA 22908, USA.
| | - Ameer E. Hassan
- Department of Neuroscience, Valley Baptist Medical Center, 78550, USA
- Corresponding author. Department of Neuroscience, Valley Baptist Medical Center, 2101 Pease St, Harlingen, TX, 78550, USA.
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Yuan Z, Liu S, Song W, Liu Y, Bi G, Xie R, Ren L. Galactose Enhances Chondrogenic Differentiation of ATDC5 and Cartilage Matrix Formation by Chondrocytes. Front Mol Biosci 2022; 9:850778. [PMID: 35615738 PMCID: PMC9124793 DOI: 10.3389/fmolb.2022.850778] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 04/07/2022] [Indexed: 12/01/2022] Open
Abstract
Galactose, an important carbohydrate nutrient, is involved in several types of cellular metabolism, participating in physiological activities such as glycosaminoglycan (GAG) synthesis, glycosylation, and intercellular recognition. The regulatory effects of galactose on osteoarthritis have attracted increased attention. In this study, in vitro cell models of ATDC5 and chondrocytes were prepared and cultured with different concentrations of galactose to evaluate its capacity on chondrogenesis and cartilage matrix formation. The cell proliferation assay demonstrated that galactose was nontoxic to both ATDC5 cells and chondrocytes. RT-PCR and immunofluorescence staining indicated that the gene expressions of cartilage matrix type II collagen and aggrecan were significantly upregulated with increasing galactose concentration and the expression and accumulation of the extracellular matrix (ECM) protein. Overall, these results indicated that a galactose concentration below 8 mM exhibited the best effect on promoting chondrogenesis, which entitles galactose as having considerable potential for cartilage repair and regeneration.
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Affiliation(s)
- Zhongrun Yuan
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China
- Guangdong Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, China
| | - Sa Liu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China
- Guangdong Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, China
- *Correspondence: Sa Liu, ; Renjian Xie, ; Li Ren,
| | - Wenjing Song
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China
- Guangdong Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, China
| | - Ying Liu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China
- Guangdong Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, China
| | - Gangyuan Bi
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China
- Guangdong Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, China
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, China
| | - Renjian Xie
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
- School of Medical Information Engineering, Gannan Medical University, Ganzhou, China
- Jiangxi Key Laboratory of Medical Tissue Engineering Materials and Biofabrication, Gannan Medical University, Ganzhou, China
- *Correspondence: Sa Liu, ; Renjian Xie, ; Li Ren,
| | - Li Ren
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China
- Guangdong Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, China
- *Correspondence: Sa Liu, ; Renjian Xie, ; Li Ren,
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Multifaceted Protective Role of Glucosamine against Osteoarthritis: Review of Its Molecular Mechanisms. Sci Pharm 2019. [DOI: 10.3390/scipharm87040034] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Osteoarthritis (OA) is a joint disease resulting from cartilage degeneration and causing joint pain and stiffness. Glucosamine exerts chondroprotective effects and effectively reduces OA pain and stiffness. This review aims to summarise the mechanism of glucosamine in protecting joint health and preventing OA by conducting a literature search on original articles. Current evidence has revealed that glucosamine exhibits anti-inflammatory effects by reducing the levels of pro-inflammatory factors (such as tumour necrosis factor-alpha, interleukin-1, and interleukin-6) and enhancing the synthesis of proteoglycans that retard cartilage degradation and improve joint function. Additionally, glucosamine improves cellular redox status, reduces OA-mediated oxidative damages, scavenges free radicals, upregulates antioxidant proteins and enzyme levels, inhibits the production of reactive oxygen species, and induces autophagy to delay OA pathogenesis. In conclusion, glucosamine prevents OA and maintains joint health by reducing inflammation, improving the redox status, and inducing autophagy in joints. Further studies are warranted to determine the synergistic effect of glucosamine with other anti-inflammatory and/or antioxidative agents on joint health in humans.
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