Coelonin

Coelonin is a dihydrophenanthrene with anti-inflammation activity. Coelonin inhibits LPS-induced PTEN phosphorylation. Coelonin inhibits NF-κB activation and p27Kip1 degradation by regulating the PI3K/AKT pathway negatively. Coelonin can inhibit IκBα phosphorylation and degradation and increases the expression of IκBα protein[1][2].

Signaling Pathways >> Immunology/Inflammation >> Interleukin Related

Signaling Pathways >> PI3K/Akt/mTOR >> PTEN

Signaling Pathways >> PI3K/Akt/mTOR >> Akt

Research Areas >> Inflammation/Immunology

Akt

NF-κB

IL-1β

IL-6

Coelonin (2.5 μg/mL) 显著降低 NF-κB p65 和 p105/50 磷酸化水平[1]。 Coelonin (0-5 μg/mL, 1.5 h) 剂量依赖性地降低 LPS 诱导的 PTEN、AKT 和 IκBa 磷酸化的增加[1]。 Coelonin (10 和 20 μg/ml) 通过减少炎症因子(包括白细胞介素 6 (IL-6) 和肿瘤坏死因子-α (TNF-α)) 的产生来减轻颗粒物 2.5 (PM2.5) 诱导的炎症< sup>[2]. Coelonin 对 IL-1β、IL-6 和 TNF-α 表达的抑制与 PTEN 无关，而对 p27Kip1 降解的抑制导致细胞周期停滞在 G1 期，这依赖于 PTEN[1] . Western Blot Analysis[1] Cell Line: RAW264.7 cells Concentration: 0, 1, 2.5, and 5 μg/mL Incubation Time: 1.5 h Result: Dose dependently reduced the increase of p65 accumulation in the nucleus induced by LPS. Dose dependently reversed LPS-induced iNOS and COX2 expression. LPS (200 ng/mL) significantly increased the phosphorylation of PTEN, AKT and inhibitor of NF-κB (IκBa), which was dose-dependently reduced by coelonin pre-treatment.

[1]. Jiang F, et al. Coelonin, an Anti-Inflammation Active Component of Bletilla striata and Its Potential Mechanism. Int J Mol Sci. 2019 Sep 8;20(18):4422.  

[2]. Cheng W, et al. Inhibition of inflammation-induced injury and cell migration by coelonin and militarine in PM2.5-exposed human lung alveolar epithelial A549 cells. Eur J Pharmacol. 2021 Apr 5;896:173931.