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Cat. No. M2342
YM155 Structure

Sepantronium bromide

Size Price Availability Quantity
Free Sample (0.5-1 mg)  USD 0 In stock
5mg USD 45  USD50 In stock
10mg USD 72  USD80 In stock
50mg USD 261  USD290 In stock
100mg USD 405  USD450 In stock
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Quality Control
Biological Activity

YM155 (Sepantronium bromide) is a novel small molecule survivin suppressant with an IC50 of 0.54 nM for the inhibition of survivin promoter activity. YM155 also completely inhibited the growth of orthotopically xenografted PC-3 tumors. YM155 suppressed expression of survivin and induced apoptosis in PC-3 and PPC-1 human HRPC cell lines at 10 nmol/L. It selectively suppresses expression of survivin and induces apoptosis in p53-deficient cancer cells in vitro at 10 nM. YM155 is highly distributed to tumors and at concentrations approximately 20-fold higher than those in plasma. YM155 exerts anti-tumor effects in various in vivo cancer models, including prostate, pancreatic, and lung cancer.

Product Citations
Customer Product Validations & Biological Datas
Source J Transl Med (2018). Figure 2. YM155
Method Cell viability assay
Cell Lines U251 and U87 cells
Concentrations 5 nM
Incubation Time 48 h
Results Cell viability decreased significantly in cells treated with both radiation and YM155 (5 nM) compared to radiation alone
Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

Chemical Information
Molecular Weight 443.29
Formula C20H19BrN4O3
CAS Number 781661-94-7
Purity >98%
Solubility DMSO 45 mg/mL
Water 80 mg/mL
Storage at -20°C

Radiosensitizing effect of YM155, a novel small-molecule survivin suppressant, in non-small cell lung cancer cell lines.
Iwasa T, et al. Clin Cancer Res. 2008 Oct 15;14(20):6496-504. PMID: 18927289.

YM155, a novel small-molecule survivin suppressant, induces regression of established human hormone-refractory prostate tumor xenografts.
Nakahara T, et al. Cancer Res. 2007 Sep 1;67(17):8014-21. PMID: 17804712.

Abmole Inhibitor Catalog 2017

Keywords: YM155, Sepantronium bromide supplier, Survivin, inhibitors

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