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    Alisol B 23-acetate
    Information
    CAS No. 26575-95-1 Price $128 / 20mg
    Catalog No.CFN99753Purity>=98%
    Molecular Weight514.8Type of CompoundTriterpenoids
    FormulaC32H50O5Physical DescriptionWhite powder
    Download Manual    COA    MSDSSimilar structuralComparison (Web)
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    Biological Activity
    Description: Alisol B 23-acetate, a partial non-competitive inhibitor of P-gp, it may be a potential MDR reversal agent. Alisol B 23-acetate produces protective effects against ANIT-induced hepatotoxity and cholestasis, due to FXR-mediated gene regulation; it obviously inhibits proliferation of the three ovarian cancer cell lines, possesses anti-proliferation, anti-migration and anti-invasion activities as a single agent on ovarian cancer cells.
    Targets: FXR | STAT | PARP | Bcl-2/Bax | MMP(e.g.TIMP) | P-gp | ATPase | STAT | CDK
    In vitro:
    Biochem Pharmacol. 2004 Sep 1;68(5):843-55.
    Reversal of P-glycoprotein-mediated multidrug resistance by Alisol B 23-acetate.[Pubmed: 15294447 ]
    Herbal drugs were screened for their activity in reversing multidrug resistance (MDR) in P-glycoprotein (P-gp) over-expressing cancer cells.
    METHODS AND RESULTS:
    Through bio-assay guided fractionation an active compound was isolated from Rhizoma Alismatis, the underground part of Alisma orientale and the chemical structure of the isolate compound was confirmed by HPLC, LC-MS and NMR as Alisol B 23-acetate (ABA). ABA restored the sensitivity of MDR cell lines HepG2-DR and K562-DR to anti-tumor agents that have different modes of action but are all P-gp substrates. It restored the activity of vinblastine, a P-gp substrate, in causing G2/M arrest in MDR cells. In a dose-dependent manner, ABA increased doxorubicin accumulation and slowed down the efflux of rhodamin-123 from MDR cells. ABA inhibited the photoaffinity labeling of P-gp by [125I]iodoarylazidoprazosin and stimulated the ATPase activity of P-gp in a concentration-dependent manner, suggesting that it could be a transporter substrate for P-gp. In addition, ABA was also a partial non-competitive inhibitor of P-gp when verapamil was used as a substrate.
    CONCLUSIONS:
    Our results suggest that ABA may be a potential MDR reversal agent and could serve as a lead compound in the development of novel drugs.
    In vivo:
    Food Funct. 2015 Apr 8;6(4):1241-50.
    Protective effects of alisol B 23-acetate from edible botanical Rhizoma alismatis against carbon tetrachloride-induced hepatotoxicity in mice.[Pubmed: 25747392]
    Carbon tetrachloride (CCl4)-induced hepatotoxicity is a common syndrome with simultaneous severe hepatocyte death and acute cholestasis.
    METHODS AND RESULTS:
    The purpose of the present study is to investigate the hepatoprotective effect of Alisol B 23-acetate (AB23A), a natural triterpenoid from edible botanical Rhizoma alismatis, on acute hepatotoxicity induced by CCl4 in mice, and further to elucidate the involvement of farnesoid X receptor (FXR), signal transducers and activators of transcription 3 (STAT3) in the hepatoprotective effect. H&E staining, BrdU immunohistochemistry and TUNEL assay were used to identify the amelioration of histopathological changes, hepatocyte proliferation and apoptosis. Real-time PCR and western blot assay were used to elucidate the mechanisms underlying Alisol B 23-acetate hepatoprotection. The results indicated that Alisol B 23-acetate treatment in a dose-dependent manner resulted in protection against hepatotoxicity induced by CCl4via FXR activation. Through FXR activation, Alisol B 23-acetate promoted hepatocyte proliferation via an induction in hepatic levels of FoxM1b, Cyclin D1 and Cyclin B1. Alisol B 23-acetate also reduced hepatic bile acids through a decrease in hepatic uptake transporter Ntcp, bile acid synthetic enzymes Cyp7a1, Cyp8b1, and an increase in efflux transporter Bsep, Mrp2 expression. In addition, Alisol B 23-acetate induced the expression of STAT3 phosphorylation, and STAT3 target genes Bcl-xl and SOCS3, resulting in decreased hepatocyte apoptosis.
    CONCLUSIONS:
    In conclusion, Alisol B 23-acetate produces a protective effect against CCl4-induced hepatotoxicity, due to FXR and STAT3-mediated gene regulation.
    Alisol B 23-acetate Description
    Source: The tubers of Alisma plantago-aquatica Linn.
    Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
    Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

    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 -20C. Generally, these will be useable for up to two weeks. 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.

    Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

    After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 1.9425 mL 9.7125 mL 19.425 mL 38.85 mL 48.5625 mL
    5 mM 0.3885 mL 1.9425 mL 3.885 mL 7.77 mL 9.7125 mL
    10 mM 0.1943 mL 0.9713 mL 1.9425 mL 3.885 mL 4.8563 mL
    50 mM 0.0389 mL 0.1943 mL 0.3885 mL 0.777 mL 0.9713 mL
    100 mM 0.0194 mL 0.0971 mL 0.1943 mL 0.3885 mL 0.4856 mL
    * Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
    Protocol
    Kinase Assay:
    Toxicol Appl Pharmacol. 2015 Mar 15;283(3):178-86.
    Alisol B 23-acetate protects against ANIT-induced hepatotoxity and cholestasis, due to FXR-mediated regulation of transporters and enzymes involved in bile acid homeostasis.[Pubmed: 25655198]
    Intrahepatic cholestasis is a clinical syndrome with systemic and intrahepatic accumulation of excessive toxic bile acids that ultimately cause hepatobiliary injury. Appropriate regulation of bile acids in hepatocytes is critically important for protection against liver injury.
    METHODS AND RESULTS:
    In the present study, we characterized the protective effect of Alisol B 23-acetate (AB23A), a natural triterpenoid, on alpha-naphthylisothiocyanate (ANIT)-induced liver injury and intrahepatic cholestasis in mice and further elucidated the mechanisms in vivo and in vitro. AB23A treatment dose-dependently protected against liver injury induced by ANIT through reducing hepatic uptake and increasing efflux of bile acid via down-regulation of hepatic uptake transporters (Ntcp) and up-regulation of efflux transporter (Bsep, Mrp2 and Mdr2) expression. Furthermore, AB23A reduced bile acid synthesis through repressing Cyp7a1 and Cyp8b1, increased bile acid conjugation through inducing Bal, Baat and bile acid metabolism through an induction in gene expression of Sult2a1. We further demonstrate the involvement of farnesoid X receptor (FXR) in the hepatoprotective effect of AB23A. The changes in transporters and enzymes, as well as ameliorative liver histology in AB23A-treated mice were abrogated by FXR antagonist guggulsterone in vivo. In vitro evidences also directly demonstrated the effect of AB23A on FXR activation in a dose-dependent manner using luciferase reporter assay in HepG2 cells.
    CONCLUSIONS:
    In conclusion, AB23A produces protective effect against ANIT-induced hepatotoxity and cholestasis, due to FXR-mediated regulation of transporters and enzymes.
    Cell Research:
    Phytomedicine. 2016 Jul 15;23(8):800-9.
    Effects of alisol B 23-acetate on ovarian cancer cells: G1 phase cell cycle arrest, apoptosis, migration and invasion inhibition.[Pubmed: 27288915]
    Ovarian cancer is the first leading cause of death among gynecologic malignancies worldwide. Discovery of new chemotherapeutic drugs is still imperative for the improvement of the survival rate. This study aims to investigate the anti-cancer potential of Alisol B 23-acetate (AB23), a protostane-type triterpene isolated from the Alismatis Rhizoma, in the parental and paclitaxel-resistant ovarian cancer cells.
    METHODS AND RESULTS:
    MTT assay was performed to evaluate cell viability after treatment with AB23, along with flow cytometry for apoptosis and cell cycle analysis. Western blotting was conducted to determine the relative protein level. Wound healing and transwell assays were performed to investigate the effect of AB23 on cell migration and invasion. AB23 obviously inhibited proliferation of the three ovarian cancer cell lines, down-regulated the protein levels of CDK4, CDK6, and cyclin D1, and blocked the cell cycle progressions in G1 phase. Meanwhile, AB23 induced accumulation of the sub-G1 phase in the three cell lines in a concentration dependent manner. The protein levels of cleaved poly ADP-ribose polymerase (PARP) and the ratio of Bax/Bcl-2 were up-regulated after treatment with AB23. Further study showed that AB23 induced endoplasmic reticulum stress through IRE1 signaling pathway and silencing of IRE1α partially enhanced AB23-induced apoptosis. Wound healing and transwell assays showed that AB23 could also suppress the migration and invasion of HEY cells. Moreover, it down-regulated the protein levels of matrix metalloproteinases MMP-2 and MMP-9.
    CONCLUSIONS:
    AB23 possessed anti-proliferation, anti-migration and anti-invasion activities as a single agent on ovarian cancer cells.
    Structure Identification:
    Arch Pharm Res. 2002 Oct;25(5):608-12.
    Chemical modification of alisol B 23-acetate and their cytotoxic activity.[Pubmed: 12433190]
    The twelve-protostane analogues were synthesized from Alisol B 23-acetate and assessed for their in vitro antitumor activity against six different human and murine tumor cell lines.
    METHODS AND RESULTS:
    Of the compounds synthesized, 23S-acetoxy-24R(25)-epoxy-11beta,23S-dihydroxyprotost-13(17)-en-3-hydroxyimine (12) exhibited significant cytotoxic activities against A549, SK-OV3, B16-F10, and HT1080 tumor cells with ED50 values of 10.0, 8.7, 5.2, and 3.1 microg/ml, respectively. Furthermore, 23S-acetoxy-13(17),24R(25)-diepoxy-11beta-hydroxyprotost-3-one (5), 13(17),24R(25)-diepoxy-11beta,23S-dihydroxyprotostan-3-one (6), 24R,25-epoxy-11beta,23S-dihydroxyprotost-13(17)-en-3-one (7), and 11beta,23S,24R,25-tetrahydroxyprotost-13(17)-en-3-one (9) showed moderate cytotoxic activities against B16-F10 and HT1080 tumor cells.
    CONCLUSIONS:
    These results mean that a hydroxyimino group at C-3 position in the protostane-type terpene enhances cytotoxic activity.