3',5'-Diprenylgenistein
3',5'-Diprenylgenistein inhibits protein tyrosine phosphatase 1B (PTP1B) activities, it can reduce muscle cell viability. 3',5'-Diprenylgenistein exhibits significant glucose-uptake activity in basal and insulin-stimulated L6 myotubes.
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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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Biol Pharm Bull. 2009 Mar;32(3):504-8.
Genistein-derivatives from Tetracera scandens stimulate glucose-uptake in L6 myotubes.[Pubmed:
19252305]
METHODS AND RESULTS:
An EtOAc-soluble partition of the MeOH extract of a branch of Tetracera scandens (Dilleniaceae family) was subjected to a glucose-uptake assay, which led to the isolation and identification of five isoflavones of previously known structure namely, genistein (1), its derivatives 3',5'-Diprenylgenistein (2), 6,8-diprenylgenistein (3), derrone (4) and alpinumisoflavone (5). Of these, compounds 2--5 exhibited significant glucose-uptake activity in basal and insulin-stimulated L6 myotubes. The findings from adenosine monophosphate-activated kinase (AMPK) activation and glucose transport protein4 (GLUT4) and GLUT1 over-expression revealed certain characteristics of compounds 2--5.
CONCLUSIONS:
These compounds inhibited protein tyrosine phosphatase 1B (PTP1B) activities with IC50 values ranging from 20.63 +/- 0.17 to 37.52 +/- 0.31 microM. No muscle cell toxicity was reported with compounds 3--5, while compounds 1 and 3',5'-Diprenylgenistein reduced muscle cell viability with IC50 values of 34.27 +/- 0.35 and 18.69 +/- 0.19 microM, respectively.
