White crystalline powder
(3S,4R,8R,9Z,12S)-10-Methyl-5-methylene-6,14-dioxo-7,13-dioxatricyclo[10.2.1.0]pentadeca-1(15),9-dien-3-yl methacrylate/2-Propenoic acid, 2-methyl-, (3aR,4S,9S,11Z,12aR)-2,3,3a,4,5,9,10,12a-octahydro-11-methyl-3-methylene-2,7-dioxo-7H-9,6-methenofuro[2,3-f]oxacycloundecin-4-yl ester/Isodeoxyelephantopin
Methanol; Acetontrile; DMSO
584.3±50.0 °C at 760 mmHg
HS Code Reference
Personal Projective Equipment
For Reference Standard and R&D, Not for Human Use Directly.
provides coniferyl ferulate(CAS#:38927-54-7) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate
Purpose: Deoxyelephantopin (ESD) and isodeoxyelephantopin (ESI) are two sesquiterpene lactones derived from the medicinal plant Elephantopus scaber Linn. (Asteraceae). Although they are used for the treatment of a wide variety of proinflammatory diseases, very little is known about their mechanism of action. Because most genes that control inflammation are regulated by activation of the transcription factor nuclear factor-kappaB (NF-kappaB), we postulated that ESD and ESI mediate their activities through modulation of the NF-kappaB activation pathway.
Experimental design: We investigated the effect of ESI and ESD on NF-kappaB activation by electrophoretic mobility shift assay and NF-kappaB-regulated gene expression by Western blot analysis.
Results: We found that ESI suppressed NF-kappaB activation induced by a wide variety of inflammatory agents, including tumor necrosis factor (TNF), interleukin-1beta, phorbol 12-myristate 13-acetate, and lipopolysaccharide. The suppression was not cell type specific, and both inducible and constitutive NF-kappaB activation was blocked. ESI did not interfere with the binding of NF-kappaB to DNA but rather inhibited IkappaBalpha kinase, IkappaBalpha phosphorylation, IkappaBalpha degradation, p65 phosphorylation, and subsequent p65 nuclear translocation. ESI also suppressed the expression of TNF-induced NF-kappaB-regulated, proliferative, antiapoptotic, and metastatic gene products. These effects correlated with enhancement of apoptosis induced by TNF and suppression of TNF-induced invasion and receptor activator of NF-kappaB ligand-induced osteoclastogenesis.
Conclusion: Our results indicate that ESI inhibits NF-kappaB activation and NF-kappaB-regulated gene expression, which may explain the ability of ESI to enhance apoptosis and inhibit invasion and osteoclastogenesis.
Isodeoxyelephantopin, a Novel Sesquiterpene Lactone, Potentiates Apoptosis, Inhibits Invasion, and Abolishes Osteoclastogenesis Through Suppression of Nuclear factor-kappaB (nf-kappaB) Activation and nf-kappaB-regulated Gene Expression
Haruyo Ichikawa 1 , Mangalam S Nair, Yasunari Takada, D B Alan Sheeja, M A Suresh Kumar, Oommen V Oommen, Bharat B Aggarwal
2006 Oct 1
The sesquiterpene lactones, Isodeoxyelephantopin (IDET) and Deoxyelephantopin (DET) are known to exhibit activities against some cancer types. The activities of these lactones against breast cancer and the molecular bases is not known. We examined the efficacy of lactones in breast cancer preclinical model. Although both lactones exhibited drug like properties, IDET was relatively effective in comparison to DET. IDET suppressed the proliferation of both invasive and non-invasive breast cancer cell lines. IDET also suppressed the colony formation and migration of breast cancer cells. The assays for Acridine Orange (AO)/Propidium Iodide (PI) staining, cell cycle distribution, phosphatidylserine externalization and DNA laddering suggested the apoptosis inducing potential of IDET. The treatment with IDET also induced an accumulation of cells in the sub-G1 and G2/M phases. The exposure of breast cancer cells to the lactone was associated with a depolarization in mitochondrial membrane potential, and cleavage of caspase and PARP. The lactone induced reactive oxygen species (ROS) generation in breast cancer cells. Further, the use of N-acetyl cysteine (NAC) suppressed IDET induced ROS generation and apoptosis. The NF-κB-p65 nuclear translocation induced by okadaic acid (OA) was suppressed by the sesquiterpene. IDET also suppressed the expression of NF-κB regulated tumorigenic proteins, and induced the expression of proapoptotic gene (Bax) in cancer cells. While the expression of oncogenic lncRNAs was suppressed, the tumor suppressor lncRNAs were induced by the sesquiterpene. Collectively, the modulation of multiple cell signaling molecules by IDET may contribute to its activities in breast cancer cells.
Isodeoxyelephantopin, a Sesquiterpene Lactone Induces ROS Generation, Suppresses NF-κB Activation, Modulates LncRNA Expression and Exhibit Activities Against Breast Cancer
Sumit S Verma 1 , Vipin Rai 1 , Nikee Awasthee 1 , Anupam Dhasmana 2 , Dhanya S Rajalaksmi 3 , Mangalam S Nair 3 , Subash C Gupta 4
2019 Nov 29
Isodeoxyelephantopin (ESI), isolated from Elephantopus scaber L. has been reported to exert anticancer effects. In this study, we aimed to investigate whether and how cancer cells exert protective responses against ESI treatment. Confocal fluorescence microscopy showed that ESI significantly induced autophagy flux in the lung cancer cells expressing mCherry-EGFP-LC3 reporter. Treatment of the cells with ESI increased the expression levels of the autophagy markers including LC3-II, ATG3 and Beclin1 in a dose-dependent manner. Pretreatment with autophagy inhibitor 3-methyladenine (3-MA) not only attenuated the effects of ESI on autophagy, but also enhanced the effects of ESI on cell viability and apoptosis. Mechanistically, the SILAC quantitative proteomics coupled with bioinformatics analysis revealed that the ESI-regulated proteins were mainly involved in Nrf2-mediated oxidative stress response. We found that ESI induced the nuclear translocation of Nrf2 for activating the downstream target genes including HO-1 and p62 (SQSTM1). More importantly, ESI-induced p62 could competitively bind with Keap1, and releases Nrf2 to activate downstream target gene p62 as a positive feedback loop, therefore promoting autophagy. Furthermore, knockdown of Nrf2 or p62 could abrogate the ESI-induced autophagy and significantly enhanced the anticancer effect of ESI. Taken together, we demonstrated that ESI can sustain cell survival by activating protective autophagy through Nrf2-p62-keap1 feedback loop, whereas targeting this regulatory axis combined with ESI treatment may be a promising strategy for anticancer therapy.
Isodeoxyelephantopin Induces Protective Autophagy in Lung Cancer Cells via Nrf2-p62-keap1 Feedback Loop
Yang Wang 1 , Jing Zhang 1 , Zhi-Hao Huang 1 , Xiao-Hui Huang 1 , Wei-Bin Zheng 1 , Xing-Feng Yin 1 , Yao-Lan Li 2 , Bin Li 1 , Qing-Yu He 1
2017 Jun 15