Category
- PI3K/Akt/mTOR
- Epigenetics
- Methylation
- Immunology & Inflammation
- Protein Tyrosine Kinase
- Angiogenesis
- Apoptosis
- Autophagy
- ER stress & UPR
- JAK/STAT
- MAPK
- Cytoskeletal Signaling
- Cell Cycle
- TGF-beta/Smad
- DNA Damage/DNA Repair
- Stem Cells & Wnt
- Hippo
- Ubiquitin
- Neuronal Signaling
- NF-κB
- GPCR & G Protein
- Endocrinology & Hormones
- Transmembrane Transporters
- Metabolism
- Proteases
- Microbiology
- Others
Archives
Melatonin alleviates inflammasome-induced pyroptosis through inhibiting NF-κB/GSDMD signal in mice adipose tissue
Pyroptosis is a proinflammatory form of cell death that is associated with pathogenesis of many chronic inflammatory diseases. Melatonin is substantially reported to possess anti-inflammatory properties by inhibiting inflammasome activation. However, the effects of melatonin on inflammasome-induced pyroptosis in adipocytes remain elusive. Here, we demonstrated that melatonin alleviated lipopolysaccharides (LPS)-induced inflammation and NLRP3 inflammasome formation in mice adipose tissue. The NLRP3 inflammasome-mediated pyroptosis was also inhibited by melatonin in adipocytes. Further analysis revealed that gasdermin D (GSDMD), the key executioner of pyroptosis, was the target for melatonin inhibition of adipocyte pyroptosis. Importantly, we determined that nuclear factor κB (NF-κB) signal was required for the GSDMD-mediated pyroptosis in adipocytes. We also confirmed that melatonin alleviated adipocyte pyroptosis by transcriptional suppression of GSDMD. Moreover, GSDMD physically interacted with interferon regulatory factor 7 (IRF7) and subsequently formed a complex to promote adipocyte pyroptosis. Melatonin also attenuated NLRP3 inflammasome activation and pyroptosis, which was induced by LPS or obesity. In summary, our results demonstrate that melatonin alleviates inflammasome-induced pyroptosis by blocking NF-κB/GSDMD signal in mice adipose tissue. Our data reveal a novel function of melatonin on adipocyte pyroptosis, suggesting a new potential therapy for melatonin to prevent and treat obesity caused systemic inflammatory response.
Related Products
Cat.No. | Product Name | Information | Publications | Customer Product Validation |
---|---|---|---|---|
S1204 | Melatonin | Melatonin is a MT receptor agonist, used as a dietary supplement. Melatonin is a selective ATF-6 inhibitor and downregulates COX-2. Melatonin enhances mitophagy and regulates the homeostasis of apoptosis and autophagy. | (15) | (4) |