Rabdoternin E
Rabdoternin E is a potential anti-inflammatory and antitumor agent. 2α-Acetoxy-14,15-cyclopimara-7β,16-diol only inhibits nitric oxide (NO) production in lipopolysaccharide (LPS)-induced RAW264.7 macrophages (IC50=2.3 μM) and exhibits cytotoxicity against human tumor cells such as HL-60 and SW-480 (IC50 values ??of 2.6 μM and 4.1 μM, respectively). Rabdoternin E is an ent-kaurane-type diterpenoid compound that can be naturally extracted from the 70% acetone aqueous extract of the aerial parts of Isodon rosthornii (Diels) Hara (a plant of the Lamiaceae family, Isodon genus).
For research use only. We do not sell to patients.
- CAS No.: 155969-82-7
- Formula: C21H30O7
- Molecular Weight:394.46
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
Description
Chemical Information
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CAS No. 155969-82-7
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Molecular Weight 394.46
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Formula C21H30O7
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SMILES
O[C@]12[C@]34[C@](CC[C@](C(C4=O)=C)([H])C3O)([H])[C@@]5([C@@H](O2)OC)C(C(C)(CC[C@H]5O)C)([H])[C@@H]1O
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Structure Classification
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Protocols
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Cell Cytotoxicity Assay
Cytotoxicity assays are usually based on the assessment of cell membrane damage, which can also be indirectly detected by measuring cell viability. Detection methods include MTT assay, CKK-8 assay, LDH assay and ATP assay, etc.
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Mammalian live/dead viability and cytotoxicity staining
Live/dead viability and cytotoxicity staining assays are based on the simultaneous detection of intracellular esterase activity in metabolically active (viable) cells and membrane integrity loss in non-viable cells. In commonly used dual-staining approaches, membrane-permeant fluorogenic substrates are converted by intracellular esterases into fluorescent products in live cells, while impermeant DNA-binding dyes selectively enter cells with compromised plasma membranes and label nucleic acids in dead or dying cells, enabling discrimination between viable and non-viable populations by fluorescence microscopy or flow cytometry.
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Research Protocol for Inflammation-related Diseases
The NLRP3 inflammasome is a cytosolic innate immune signaling platform that integrates priming signals and danger-signal activation to promote caspase-1 activation, maturation of IL-1β and IL-18, and gasdermin D-mediated pyroptotic cell death. The core experimental logic is to determine whether inflammatory disease phenotypes are driven by increased NLRP3 expression, ASC-containing inflammasome assembly, caspase-1 cleavage, GSDMD cleavage, and extracellular release of IL-1β/IL-18 rather than by nonspecific cell injury alone. The pathway is strongly linked to inflammation-related disease phenotypes because monosodium urate crystals activate NALP3/NLRP3 inflammasome signaling in gout-like crystal inflammation, cholesterol crystals activate NLRP3 inflammasomes in atherogenesis models, and DSS-induced intestinal inflammation has been reported to involve NLRP3 inflammasome activity. However, experimental colitis studies also show context-dependent protective effects of NLRP3 inflammasome co
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Cell Viability Determination by MTT Colorimetric Assay
The following protocol uses the MTT colorimetric assay as a classic literature-established method for assessing cell viability/metabolic activity in cultured mammalian cells. MTT[3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] is reduced by metabolically active cells to a colored formazan product; the amount of formazan is quantified spectrophotometrically and provides an indirect measure of metabolically active viable cells. Importantly, MTT reduction reflects cellular oxidoreductase/metabolic activity rather than an absolute direct count of living cells, so changes in cellular metabolism can alter the signal independently of cell number.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)