A steroidal saponin with diverse biological activities; inhibits superoxide generation in isolated human neutrophils from 20-100 µM; reduces EV71-induced cell death in Vero cells (IC50 = 4.3 µM); inhibits ADP-induced platelet aggregation in isolated rabbit PRP at 20

Timosaponin BII – 1 mg

Brand:
Cayman
CAS:
136656-07-0
Storage:
-20
UN-No:
Non-Hazardous - /

Timosaponin BII (TB-II) is a steroidal saponin that has been found in Anemarrhenae and has diverse biological activities.{59438,55411,59439} TB-II (20-100 µM) inhibits superoxide generation induced by phorbol 12-myristate 13-acetate (PMA; Item No. 10008014), N-formyl-Met-Leu-Phe (fMLP; Item No. 21495), or arachidonic acid (Item Nos. 90010 | 90010.1 | 10006607) in isolated human neutrophils.{59438} It reduces cell death induced by enterovirus 71 (EV71) in Vero cells (IC50 = 4.3 µM).{55411} TB-II (20, 40, and 80 mg/ml) inhibits ADP-induced platelet aggregation in isolated rabbit platelet-rich plasma (PRP).{59439} TB-II (3 and 6 mg/kg) increases activated partial thromboplastin time (APTT) and decreases the wet weight and length of thrombi in Chandler’s ex vivo thrombosis model.  

 

Available on backorder

Add to quotes
SKU: 30644 - 1 mg Category:

Description

A steroidal saponin with diverse biological activities; inhibits superoxide generation in isolated human neutrophils from 20-100 µM; reduces EV71-induced cell death in Vero cells (IC50 = 4.3 µM); inhibits ADP-induced platelet aggregation in isolated rabbit PRP at 20, 40, and 80 mg/ml; increases APTT and decreases the wet weight and length of thrombi in Chandler’s ex vivo thrombosis model at 3 and 6 mg/kg

Formal name: (3β,5β,22α,25S)-26-(β-D-glucopyranosyloxy)-22-hydroxyfurostan-3-yl 2-O-β-D-glucopyranosyl-β-D-galactopyranoside

Synonyms:  TB-II

Molecular weight: 921.1

CAS: 136656-07-0

Purity: ≥98%

Formulation: A crystalline solid

Related products

  • A small molecule activator of stem cell renewal that allows the propagation of OG2 mES cells for at least 10 passages in an undifferentiated state; activity is mediated by the combined inhibition of RasGAP and ERK1 with Kd values of 98 and 212 nM

    SC-1 – 25 mg

    The maintenance of embryonic stem cells in culture typically requires feeder cells and various exogenous factors found in serum. Murine embryonic stem (mES) cells can be maintained in the absence of feeder cells and serum but require the leukemia inhibitor factor (LIF) and bone morphogenic protein (BMP) to prevent differentiation and promote self-renewal. SC-1 is a small molecule activator of stem cell renewal that allows the propagation of OG2 mES cells for at least 10 passages in an undifferentiated state.{14533} The activity of SC-1 is mediated by the combined inhibition of RasGAP and ERK1 with Kd values of 98 and 212 nM, respectively.{14533} Inhibition of RasGAP increases Ras signaling via the PI3-kinase pathway which promotes self-renewal, whereas inhibition of ERK blocks differentiation.  

     

    Brand:
    Cayman
    SKU:10009557 - 25 mg

    Available on backorder

    Add to quotes
    Add to quotes
    View product page
  • A powerful effector in both the TetR and revTetR transcriptional regulator systems

    Anhydrotetracycline (hydrochloride) – 100 mg

    The tetracycline repressor (TetR) is a transcriptional regulator which normally binds tightly to its palindromic tetO operator DNA, blocking gene expression.{17508} Tet causes the repressor to dissociate from the DNA, allowing transcription to occur. A novel reverse TetR (revTetR) requires tetracycline as a co-repressor to bind tetO and block transcription.{17509,17510} Anhydrotetracycline (hydrochloride) is a powerful effector in both the tetracycline repressor (TetR) and reverse TetR (revTetR) systems, binding the Tet repressor 35-fold more strongly than Tet.{17508,17511} Moreover, anhydrotetracycline poorly binds the 30S ribosomal subunit, compared to Tet,{17512} so it does not act as a general inhibitor of translation and is a poor antibiotic. Perhaps related to this, the concentration of anhydrotetracycline that inhibits eukaryotic cell growth is more than a 1,000-fold above the dose that alters transcription through TetR.{17508}  

     

    Brand:
    Cayman
    SKU:10009542 - 100 mg

    Available on backorder

    Add to quotes
    Add to quotes
    View product page
  • PtdIns-(3

    PtdIns-(3,4,5)-P3-biotin (sodium salt) – 25 µg

    The PtdIn phosphates play an important role in the generation and transduction of intracellular signals.{8344,4096,14518} PtdIns-(3,4,5)-P3-biotin is an affinity probe which allows the PIP3 to be detected through an interaction with the biotin ligand. This design allows PtdIns-(3,4,5)-P3-biotin to serve as a general probe for any protein with a high affinity binding interaction with inositol-(3,4,5)-triphosphate phospholipids, such as phosphatidylinositol 3-kinase, PTEN, or PH-domain-containing proteins.  

     

    Brand:
    Cayman
    SKU:10009531 - 25 µg

    Available on backorder

    Add to quotes
    Add to quotes
    View product page
  • CAY10512 is a substituted trans-stilbene analog of resveratrol that is 100-fold more potent as measured by antioxidant activity. The IC50 value for inhibition of TNFα-induced activation of NF-κB by CAY10512 is 0.15 µM compared to 20 µM by resveratrol.{14545}

    CAY10512 – 500 mg

    The nuclear factor-κB (NF-κB) regulates the expression of numerous genes involved in immunity and inflammation, cellular stress responses, growth, and apoptosis. Resveratrol, a polyphenolic trans-stilbene, is a known inhibitor of the activation of NF-κB and exhibits activity against a wide variety of cancer cells. CAY10512 is a substituted trans-stilbene analog of resveratrol that is 100-fold more potent as measured by antioxidant activity. The IC50 value for inhibition of TNFα-induced activation of NF-κB by CAY10512 is 0.15 µM compared to 20 µM by resveratrol.{14545}  

     

    Brand:
    Cayman
    SKU:10009536 - 500 mg

    Available on backorder

    Add to quotes
    Add to quotes
    View product page