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Diphenoxytriphenylphosphorane: A potent carbohydrate cyclodehydration reagent. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mosaiab T, Boiteux S, Zulfiker AHM, Wei MQ, Kiefel MJ, Houston TA. A Simple Glycolipid Mimic of the Phosphatidylinositol Mannoside Core from Mycobacterium tuberculosis Inhibits Macrophage Cytokine Production. Chembiochem 2018; 19:1476-1481. [PMID: 29693771 DOI: 10.1002/cbic.201800150] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Indexed: 11/10/2022]
Abstract
Glycolipids from Mycobacterium tuberculosis have a profound impact on the innate immune response of the host. Macrophage-inducible C-type lectin (Mincle) is a pattern-recognition receptor that has been shown to bind trehalose dimycolate (TDM) from the mycobacterium and instigate intracellular signalling in the immune cell. There are structural similarities between the structures of TDM and phosphatidyl inositol mannoside (PIM). We thus hypothesized that these latter structures might also modulate an immune response in a similar manner. To test this, we synthesized a series of new mannose derivatives modified with fatty esters at the 6-position and assessed the release of inflammatory cytokines in human U937 macrophages under the induction of lipopolysaccharides (LPS) after glycolipid treatment. The results showed that the amount of two major cytokines-tumour necrosis factor (TNF)-α and interleukin (IL)-6-released from LPS-stimulated U937 cells decreased significantly when compared to a control upon treatment with the prepared glycolipids, thus indicating a reduction in cytokine production by the macrophages.
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Affiliation(s)
- Tamim Mosaiab
- Institute for Glycomics, Griffith University, Gold Coast Campus, Parklands Drive, Southport, Queensland, 4215, Australia
| | - Sandra Boiteux
- Institute for Glycomics, Griffith University, Gold Coast Campus, Parklands Drive, Southport, Queensland, 4215, Australia
| | - Abu Hasanat Md Zulfiker
- Menzies Health Institute Queensland and School of Medical Science, Griffith University, Gold Coast Campus, Parklands Drive, Southport, Queensland, 4215, Australia.,Department of Biomedical Sciences, John C. Edwards School of Medicine, Marshall University, 1 John Marshall Drive, Huntington, WV, 25701, USA
| | - Ming Q Wei
- Menzies Health Institute Queensland and School of Medical Science, Griffith University, Gold Coast Campus, Parklands Drive, Southport, Queensland, 4215, Australia
| | - Milton J Kiefel
- Institute for Glycomics, Griffith University, Gold Coast Campus, Parklands Drive, Southport, Queensland, 4215, Australia
| | - Todd A Houston
- Institute for Glycomics, Griffith University, Gold Coast Campus, Parklands Drive, Southport, Queensland, 4215, Australia
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