1-O-Acetylbritannilactone
CAS No. : 33627-41-7

1-O-Acetylbritannilactone
Cat. No. : CS-3742
M. Wt. : 308.37
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10mg 5-10DAYS $600.0
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  • Data Sheet

  • Introduction

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Name: 1-O-Acetylbritannilactone; Inulicin
Cat. No. : CS-3742
CAS No. : 33627-41-7
Formula: C17H24O5
M. Wt. : 308.37
Solubility: DMSO

Activity:

1-O-Acetylbritannilactone is an active compound isolated from Inula Britannica L. 1-O-Acetylbritannilactone inhibits VEGF-mediated activation of Src and FAK. 1-O-Acetylbritannilactone inhibits LPS-induced PGE2 production and COX-2 expression, and NF-κB activation and translocation. IC50 & Target: Src, FAK[1]
PGE2, COX-2, NF-κB[2] In Vitro: 1-O-Acetylbritannilactone (ABL) inhibits angiogenesis and lung cancer cell growth through regulating VEGF-Src-FAK signaling. 1-O-Acetylbritannilactone dose-dependently inhibits vascular endothelial growth factor (VEGF)-induced proliferation, migration, and capillary structure formation of cultured human umbilical vascular endothelial cells (HUVECs). Treatment of A549 NSCLC cells with 1-O-Acetylbritannilactone results in cell growth inhibition and Src-FAK in-activation. The potential effect of 1-O-Acetylbritannilactone is tested ton Src and FAK phosphorylation in A549 lung cancer cells. Significant high levels of Src and FAK phosphorylations are noticed a in A549 cells, which are both inhibited by treatment of 1-O-Acetylbritannilactone (5 μM and 10 μM). Src and FAK are both important for cancer cell proliferation. Thus, A549 cell growth, tested by MTT assay and clonogenicity assay,is remarkably inhibited by corresponding 1-O-Acetylbritannilactone treatment. The anti-A549 cell growth activity of 1-O-Acetylbritannilactone is again dose-dependent[1].1-O-acetylbritannilactone (ABL) isolated from Inula britannica-F., inhibits inflammatory responses in vascular smooth muscle cells (VSMCs). 1-O-Acetylbritannilactone (5, 10, 20 μM) has several concentration dependent effects, including inhibition of lipopolysaccharide (LPS)-induced PGE2 production and COX-2 expression, and blockade of NF-κB activation and translocation. In addition, 1-O-Acetylbritannilactone directly inhibits the binding of active NF-κB to specific DNA cis-element[2]. In Vivo: Administration of a single dose of 1-O-Acetylbritannilactone (12 mg/kg/day) remarkably suppresses growth of A549 xenografts in nude mice. In vivo microvessels formation and Src activation are also significantly inhibited in 1-O-Acetylbritannilactone -treated xenograft tumors. To investigate the potential activity of 1-O-Acetylbritannilactone in vivo, a nude mice xenograft model is applied. A single dose of 1-O-Acetylbritannilactone (12 mg/kg/day, i.p.) dramatically inhibits the growth of A549 xenografts in nude mice. Further, the weights of 1-O-Acetylbritannilactone-treated tumors are remarkably lighter than that of vehicle-treated tumors. Notably, 1-O-Acetylbritannilactone administration does not affect mice body weights[1].

Protocol:

Cell Assay: [1]HUVECs or A549 cells are plated in 60 mm plates (300 cells/plate). After overnight incubation, cells are treated with applied agents (e.g., 1-O-Acetylbritannilactone; 5 μM and 10 μM) for 24 h. Cells are then washed, and fresh media are added. After 10 days of incubation, surviving colonies are fixed, stained, and manually counted[1].
Animal Administration: [1]Mice[1]
Male nude mice (4-6weeks old, BALB/c) are used. A549 cells (five million cells in 0.1 mL of culture medium) are subcutaneously injected at the right thigh of nude mice, and treatment is started when the tumors reach an average volume about 100 mm3. Animals are randomized into two groups with 10 mice per group: (a) Vehicle; (b) 12 mg/kg of 1-O-Acetylbritannilactone . 1-O-Acetylbritannilactone is injected intraperitoneally (i.p.) daily. The mice are examined daily for toxicity/mortality relevant to treatment, and the tumor is measured with a caliper every two days. The tumor volume (in mm3) is calculated, and the tumor growth curve is presented. At the end of experiments, xenograft tumors are isolated through surgery and weighted[1].

References:

Zhengfu H, et al. 1-o-acetylbritannilactone (ABL) inhibits angiogenesis and lung cancer cell growth through regulating VEGF-Src-FAK signaling. Biochem Biophys Res Commun. 2015 Aug 21;464(2):422-7.

Liu YP, et al. Acetylbritannilactone suppresses lipopolysaccharide-induced vascular smooth muscle cell inflammatory response. Eur J Pharmacol. 2007 Dec 22;577(1-3):28-34.

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