Lebecetin, a snake venom C-type lectin protein, modulates LPS-induced inflammatory cytokine production in human THP-1-derived macrophages. (November 2020)

• Record Type: Journal Article
• Authors: Jebali, Jed; Zakraoui, Ons; Aissaoui, Dorra; Abdelkafi-Koubaa, Zaineb; Srairi-Abid, Najet; Marrakchi, Naziha; Essafi-Benkhadir, Khadija
• Is Part Of: Toxicon. Volume 187(2020)
• Page Start: 144
• Page End: 150
• Publication Date: 2020-11
• Subjects: Snake venom -- C-type lectin -- Lebecetin -- Inflammatory cytokines -- Mechanism of action; Toxins -- Periodicals; Venom -- Periodicals; 615.9
• DOI: 10.1016/j.toxicon.2020.09.001
• Languages: English
• ISSNs: 0041-0101

Abstract

Abstract: The excessive production of inflammatory mediators results in an overactive immune response leading to the worsening of various human diseases. Thus, there is a still need to identify molecules able to regulate the inflammatory response. Lebecetin, a C-type lectin protein isolated from Macrovipera lebetina snake venom, was previously characterized as a platelet aggregation inhibitor and antitumor active biomolecule. In the present work, we investigated its effect on the production of some cytokines linked to inflammatory response and the underlying mechanisms in lipopolysaccharide (LPS)-induced THP1 macrophages. Interestingly, we found that lebecetin reduced the levels of the pro-inflammatory cytokines TNF-α, IL-6, and IL-8 while it partially increased LPS-induced secretion of the immunomodulatory cytokine IL-10. Furthermore, this modulatory effect was accompanied by decreased activation of ERK1/2, p38, AKT kinases and NF-κB along with reduced expression of αvβ3 integrin. Thus, this study highlights the promising role of lebecetin as a natural biomolecule that could manage the inflammatory response involved in the development and progression of inflammatory diseases. Highlights: Lebecetin a snaclec from Macrovipera lebetina, modulates the production of inflammatory cytokines in monocytic cell line. Lebecetin reduced Alpha-v beta-3 integrin expression in lipopolysaccharide-induced human monocytic cell line. Lebecetin inhibited inflammatory response through modulating different signaling pathways In silico analysis highlighted the role of two new biologically active motifs in the modulation of inflammatory response