Naturally occurring withanolide/steroidal lactone with anticancer properties
Biological descriptionNaturally occurring withanolide/steroidal lactone with anticancer properties. Demonstrates a number of cellular effects including the covalent binding to annexin II, inhibition of chymotrypsin-like activity, PKC and caspase 3. Causes translocation of cyctochrome C to the nucleous and the cleavage of PLC-γ1. Down-regulates Notch 1, 3, cdc25C, phosphorylated Akt and bcl-2 proteins.
Chemical name(4β,5β,6β,22R)-5,6-Epoxy-4,22,27-trihydroxy-1-oxoergosta-2,24-dien-26-oic acid δ-lactone
Storage instructionsStore at -20°C. Store under desiccating conditions. The product can be stored for up to 12 months.
Solubility overviewSoluble in ethanol
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use at an assay dependent concentration.
Withaferin A from Withania somnifera images
Functional Studies-Withaferin A from Withania somnifera(ab120644)
ab7973 staining Bcl2 in HEK 293 cells treated with withaferin A from Withania somnifera (ab120644), by ICC/IF. Decrease in Bcl2 expression with increased concentration of withaferin A from Withania somnifera, as described in literature. The cells were incubated at 37°C for 3h in media containing different concentrations of ab120644 (withaferin A from Withania somnifera) in DMSO, fixed with 100% methanol for 5 minutes at -20°C and blocked with PBS containing 10% goat serum, 0.3 M glycine, 1% BSA and 0.1% tween for 2h at room temperature. Staining of the treated cells with ab7973 (5 µg/ml) was performed overnight at 4°C in PBS containing 1% BSA and 0.1% tween. A DyLight 488 goat anti-rabbit polyclonal antibody (ab96899) at 1/250 dilution was used as the secondary antibody.
References for Withaferin A from Withania somnifera (ab120644)
This product has been referenced in:
Zhang X et al. Inhibition of cell growth and induction of apoptosis in ovarian carcinoma cell lines CaOV3 and SKOV3 by natural withanolide Withaferin A. Gynecol Oncol124:606-12 (2012).
Read more (PubMed: 22188785) »