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PF-04929113 mesylate

Alias: SNX-5422 mesylate;SNX5422; SNX 5422; PF4929113; PF-4929113 mesylate; PF 4929113; PF04929113; PF 04929113; PF-04929113mesylate
Cat No.:V3758 Purity: ≥98%
PF-04929113 mesylate (also known as SNX-5422 mesylate) is a potent and selective inhibitor of heat shock protein 90 (HSP90) with Kd of 41 nM, it induces Her-2 degradation with IC50 of 37 nM.
PF-04929113 mesylate
PF-04929113 mesylate Chemical Structure CAS No.: 1173111-67-5
Product category: Others 5
This product is for research use only, not for human use. We do not sell to patients.
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Other Forms of PF-04929113 mesylate:

  • PF-04929113 (SNX-5422)
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

PF-04929113 mesylate (also known as SNX-5422 mesylate) is a potent and selective inhibitor of heat shock protein 90 (HSP90) with Kd of 41 nM, it induces Her-2 degradation with IC50 of 37 nM. PF-04929113 is a synthetic prodrug of SNX-2112 with potential antineoplastic activity. PF-04929113 is rapidly converted to SNX-2112, which accumulates in tumors relative to normal tissues. SNX-2112 inhibits Hsp90, which may result in the proteasomal degradation of oncogenic client proteins, including HER2/ERBB2, and the inhibition of tumor cell proliferation.

Biological Activity I Assay Protocols (From Reference)
ln Vitro

In vitro activity: PF-04929113 is a small-molecule Hsp90 inhibitor based on the 6,7-dihydro-indazol-4-one scaffold. PF-04929113 developed by Serenex, converts to SNX-2122, which is the active Hsp90 inhibitor form. PF-04929113 exhibits potent effects on Her-2 stability and causes expected up-regulation of Hsp70. PF-04929113 shows potent antiproliferative activity against a broad range of cancer cell types, e.g. MCF-7 (IC50=16 nM), SW620 (IC50=19 nM), K562 (IC50=23 nM), SK-MEL-5 (IC50=25 nM), and A375 (IC50=51 nM).


Kinase Assay: Hsp90 from porcine spleen extract is isolated by affinity capture on a purine-affinity media. The Hsp90 loaded media is then challenged with PF-04929113 at a given concentration, ranging from 0.8 to 500 μM, and the amount of Hsp90 liberated at each concentration is determined by Bradford protein assay. The resulting IC50 values are corrected for the ATP ligand concentration and presented as apparent Kd values.


Cell Assay: All assays are done in 96-well plates. All cell lines are purchased from ATCC. Proliferation rates are measured by seeding cells (MCF-7, SW620, K562, SK-MEL-5 and A375 cancer cell lines) into 96-well plates, followed by compound addition 24 h later. After addition of PF-04929113, cells are allowed to grow for either an additional 72 or 144 h depending on rate of growth. At harvest, media is removed and DNA content for individual wells is determined using CyQuant DNA dye. Levels of Hsp90 client proteins and phosphor-regulated proteins in A375 are measured by high content analysis (HCA) using an ArrayScan 4.5 instrument after 24 hours of treatment with PF-04929113, followed by methanol fixation. After fixation in 4% PBS-buffered formalin and permeablization with 0.1% TX-100, cells are probed with anti-Her2, antiphospho-S6 (pS6), antipERK, and anti-Hsp70 primary antibodies, followed by TRITC or FITC conjugated secondary antibodies. Nuclei are also stained with Hoechst DNA binding dye. For each well, 250-500 individual nuclei are identified along with the average staining intensity for the client and phospho-proteins for each cell. Average client staining intensities are then calculated for each well.

ln Vivo
PF-04929113 inhibits human MM cell growth in vivo, and immuno-histochemical analysis shows PF-04929113 significantly inhibits p-ERK and p-Akt in treated mice. Meanwhile, PF-04929113 treatment significantly decreases the percentage of CD31+ cells and MVD, consistent with an inhibitory effect on angiogenesis in vivo. A 50 mg/kg administration of PF-04929113 delivered 3 times per week significantly delays castrate-resistant LNCaP tumor growth and prolongs cancer specific survival. Immuno-histochemical analysis indicates increased SP70 expression, and decreases Ki67, Akt, and AR expression, after treatment with PF-04929113. Inhibition of tumor progression by PF-04929113 may result from a combination of decreased proliferative (reduced Ki67 and Akt expression) or increased apoptosis (increased ApopTag staining) rates.
Animal Protocol
Dissolved in 1% carboxy methylcellulose/0.5% Tween 80 at 10 mg/mL and stored at 4 °C for in vivo study; 20 or 40 mg/kg; oral gavage
Fox Chase SCID mice bearing MM.1S cells
References
: J Med Chem. 2009;52(14):4288-305; Blood. 2009;113(4):846-55; Clin Cancer Res. 2011;17(8):2301-13.
Additional Infomation
Hsp90 Inhibitor SNX-5422 Mesylate is the orally bioavailable mesylate salt of a synthetic prodrug targeting the human heat-shock protein 90 (Hsp90) with potential antineoplastic activity. Although the mechanism of action remains to be fully elucidated, Hsp90 inhibitor SNX-5422 is rapidly converted to SNX-2112, which accumulates more readily in tumors relative to normal tissues. SNX-2112 inhibits Hsp90, which may result in the proteasomal degradation of oncogenic client proteins, including HER2/ERBB2, and the inhibition of tumor cell proliferation. Hsp90 is a molecular chaperone that plays a key role in the conformational maturation of oncogenic signaling proteins, such as HER2/ERBB2, AKT, RAF1, BCR-ABL, and mutated p53, as well as many other molecules that are important in cell cycle regulation or immune responses.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C26H34F3N5O7S
Molecular Weight
617.64
Exact Mass
617.213
CAS #
1173111-67-5
Related CAS #
908115-27-5;1173111-67-5 (mesylate);
PubChem CID
44195570
Appearance
Typically exists as solid at room temperature
LogP
5.612
Hydrogen Bond Donor Count
4
Hydrogen Bond Acceptor Count
13
Rotatable Bond Count
7
Heavy Atom Count
42
Complexity
969
Defined Atom Stereocenter Count
0
SMILES
S(C([H])([H])[H])(=O)(=O)O[H].FC(C1C2C(C([H])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])C=2N(C2C([H])=C([H])C(C(N([H])[H])=O)=C(C=2[H])N([H])C2([H])C([H])([H])C([H])([H])C([H])(C([H])([H])C2([H])[H])OC(C([H])([H])N([H])[H])=O)N=1)=O)(F)F
InChi Key
NVGFSTMGRRADRG-UHFFFAOYSA-N
InChi Code
InChI=1S/C25H30F3N5O4.CH4O3S/c1-24(2)10-18-21(19(34)11-24)22(25(26,27)28)32-33(18)14-5-8-16(23(30)36)17(9-14)31-13-3-6-15(7-4-13)37-20(35)12-29;1-5(2,3)4/h5,8-9,13,15,31H,3-4,6-7,10-12,29H2,1-2H3,(H2,30,36);1H3,(H,2,3,4)
Chemical Name
[4-[2-carbamoyl-5-[6,6-dimethyl-4-oxo-3-(trifluoromethyl)-5,7-dihydroindazol-1-yl]anilino]cyclohexyl] 2-aminoacetate;methanesulfonic acid
Synonyms
SNX-5422 mesylate;SNX5422; SNX 5422; PF4929113; PF-4929113 mesylate; PF 4929113; PF04929113; PF 04929113; PF-04929113mesylate
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: 5 mg/mL (9.6 mM)
Water:<1 mg/mL
Ethanol: 3 mg/mL (5.2 mM)
Solubility (In Vivo)
0.5% CMC+0.25% Tween 80: 25mg/mL
 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.6191 mL 8.0953 mL 16.1907 mL
5 mM 0.3238 mL 1.6191 mL 3.2381 mL
10 mM 0.1619 mL 0.8095 mL 1.6191 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
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Biological Data
  • PF-04929113 mesylate

    PF-04928473 induces degradation of Hsp90 client proteins, inhibits AR transactivation and nuclear translocation, and downregulates AR-regulated genes.Clin Cancer Res.2011 Apr 15;17(8):2301-13.
  • PF-04929113 mesylate

    PF-04929113 significantly delays castrate-resistant LNCaP tumor growth and prolongs cancer specific survival.Clin Cancer Res.2011 Apr 15;17(8):2301-13.
  • PF-04929113 mesylate

    Serum PSA changes in PF-04929113-treated mice do not correlate to suppression of tumor volume progression.Clin Cancer Res.2011 Apr 15;17(8):2301-13.
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