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569371 SREBP Processing Inhibitor, Betulin - CAS 473-98-3 - Calbiochem

Overview

Key Spec Table

CAS #Empirical Formula
473-98-3C₃₀H₅₀O₂

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569371-250MG
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      Description
      OverviewA cell-permeable pentacyclic triterpenoid from birch bark extract that interacts with SCAP (SREBP cleavage activating protein) and prevents SREBP (sterol regulatory element-binding protein) Golgi proteolytic activation (1 to 13.55 µM in Rat hepatocytes CRL-1601) via a similar mechanism as oxysterols by inducing the association of SCAP with Insig-1 (insulin-induced gene-1), thereby causing SCAP-SREBPs complex ER retention. Unlike oxysterols, Betulin does not activate LXR to induce concomitant HMGCR (HMG-CoA reductase) degradation and SREBP-1 up-regulation. While both Betulin and HMGCR inhibitor Lovastatin (Cat. No. 438185) inhibit cellular cholesterol synthesis (by ~70% in CRL-1601 cultures with respective compound at 13.55 and 1 µM concentration), only Betulin suppresses cellular fatty acid synthesis (by ~55% at 13.55 µM in CRL-1601). Betulin is shown to exhibit comparable in vivo efficacy as Lovastatin (both dosed at 30 mg/kg/day with chow) in ameliorating high fat/cholesterol diet-induced obesity (% fat/lean tissue ratio increase from non-fat diet mice = 167, 44, and 33 in mice consuming fat diet alone, with Lovastatin, with Betulin, respectively). However, only Betulin is demonstrated to lower fasting blood glucose and insulin levels and reduce fat cell size in white adipose tissue in high fat diet mice. Fatostatin (Cat. No. 341329) in comparison does not target SCAP via sterol-binding site, nor does it induce SCAP binding to Insig-1.
      Catalogue Number569371
      Brand Family Calbiochem®
      SynonymsLup-20(29)-ene-3β,28-diol, Sterol Regulatory Element Binding Protein Processing Inhibitor, Betulin
      References
      ReferencesTang, J.J., et al. 2011. Cell Metab. 13, 44.
      Product Information
      CAS number473-98-3
      FormOff-white powder
      Hill FormulaC₃₀H₅₀O₂
      Chemical formulaC₃₀H₅₀O₂
      Structure formula ImageStructure formula Image
      Quality LevelMQ100
      Biological Information
      Purity≥95% by NMR
      Safety Information
      R PhraseR: 20/21/22

      Harmful by inhalation, in contact with skin and if swallowed.
      S PhraseS: 22-26-36

      Do not breathe dust.
      In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
      Wear suitable protective clothing.
      Storage and Shipping Information
      Ship Code Shipped at Ambient Temperature or with Blue Ice or with Dry Ice
      Toxicity Toxic
      Storage +2°C to +8°C
      Do not freeze Ok to freeze
      Special InstructionsFollowing reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.
      Global Trade Item Number
      Catalogue Number GTIN
      569371-250MG 04055977190403