Soyasaponin Bb
Soyasaponin Bb can suppress Eca-9706 cell growth, reverse effects on over expression of c-met, VEGF, and induce cell apoptosis through inhibiting HDAC1-NF-kappaB and activating PETEN and caspase-3 signaling pathways.
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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.
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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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Wei Sheng Yan Jiu. 2010 Jul;39(4):444-6.
Apoptosis effects on human esophageal cancer cells by soyasaponin Bb and its machanism.[Pubmed:
20726234]
To explore the effect and potential mechanism of apoptosis in the Eca-9706 cells induced by Soyasaponin Bb.
METHODS AND RESULTS:
Different concentrations of Soyasaponin Bb were on the Eca-9706 cell. Cell growth suppression rate was detected by MTT. Apoptotic rate was detected by TUNEL. The expression changes of HDAC1, NF-kappaB, PTEN, cyclin D1, c-met, VEGF or caspase-3 in the SSBb were detected by immunohistochemistry and immunoblotting.
Compared with the control group, the growth-inhibition rate and apoptotic rate were increased, the expressions of PTEN, caspase 3 were increased, the expressions of c-met, VEGF, HDAC1, NF-kappaB and cyclin D1 were decreased.
CONCLUSIONS:
SSBb can suppress Eca-9706 cell growth. SSBb can exhibit reverse effects on over expression of c-met, VEGF in Eca-9706 cells. Eca-9706 cell apoptosis can be induced by SSBb through inhibiting HDAC1-NF-kappaB and activating PETEN and caspase-3 signaling pathways.
J Enzyme Inhib Med Chem . 2019 Dec;34(1):350-360.
Soyasaponins from Zolfino bean as aldose reductase differential inhibitors[Pubmed:
30734590]
Abstract
Seven triterpenoid saponins were identified in methanolic extracts of seeds of the Zolfino bean landrace (Phaseolus vulgaris L.) by HPLC fractionation, revealing their ability to inhibit highly purified human recombinant aldose reductase (hAKR1B1). Six of these compounds were associated by MS analysis with the following saponins already reported in different Phaseolus vulgaris varieties: soyasaponin Ba (V), Soyasaponin Bb, soyasaponin Bd (sandosaponin A), soyasaponin αg, 3-O-[R-l-rhamnopyranosyl(1 → 2)-α-d-glucopyranosyl(1 → 2)-α-d-glucuronopyranosyl]olean-12-en-22-oxo-3α,-24-diol, and soyasaponin βg. The inhibitory activity of the collected fractions containing the above compounds was tested for hAKR1B1-dependent reduction of both l-idose and 4-hydroxynonenal, revealing that some are able to differentially inhibit the enzyme. The present work also highlights the difficulties in the search for aldose reductase differential inhibitors (ARDIs) in mixtures due to the masking effect on ARDIs exerted by the presence of conventional aldose reductase inhibitors. The possibility of differential inhibition generated by a different inhibitory model of action of molecules on different substrates undergoing transformation is also discussed.
Keywords: Saponins; Zolfino bean; aldose reductase; differential inhibitors.
Anal Sci. 2015;31(2):85-9.
Simple and rapid separation of soyasaponin Bb from a soy extract.[Pubmed:
25746805]
A simple method to separate Soyasaponin Bb from a soy extract is presented.
METHODS AND RESULTS:
This method is based on the difference in the solubility of Soyasaponin Bb and Ba and other components into 3:7 and 1:1 (v/v) acetone-water mixed solvents. The crude soyasaponin consisting of soyasaponins Aa, Ab, Ba, and Bb at the 10 wt% level and other components was examined as the soy extract. A 10 mg quantity of the crude soyasaponin was mixed with 1 mL of the 3:7 acetone-water containing 0.1 mol/L HCl, and the supernatant was removed to obtain a precipitate, which was found to contain mainly soyasaponins Bb and Ba. The precipitate was mixed with 0.4 mL of the 1:1 acetone-water containing 0.1 mol/L HCl; the supernatant was transferred, and was mixed with 0.6 mL of water to obtain a precipitate, which was found to contain mainly Soyasaponin Bb.
CONCLUSIONS:
The yield was ca. 30%, which may be much higher than that by the conventional preparative chromatographic approach. The separation method is rapid and easy to carry out, and is useful for the preparation of a Soyasaponin Bb sample.
