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    Stem Cell/Wnt
  2. ROCK
  3. RKI-1447

RKI-1447 

Cat. No.: HY-15755 Purity: 97.26%
Handling Instructions

RKI-1447 is a potent small molecule inhibitor of ROCK1 and ROCK2 with IC50 values of 14.5 nM and 6.2 nM, respectively.

For research use only. We do not sell to patients.

RKI-1447 Chemical Structure

RKI-1447 Chemical Structure

CAS No. : 1342278-01-6

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Free Sample (0.5-1 mg)   Apply now  
10 mM * 1 mL in DMSO USD 119 In-stock
Estimated Time of Arrival: December 31
5 mg USD 108 In-stock
Estimated Time of Arrival: December 31
10 mg USD 144 In-stock
Estimated Time of Arrival: December 31
50 mg USD 540 In-stock
Estimated Time of Arrival: December 31
100 mg USD 780 In-stock
Estimated Time of Arrival: December 31
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Description

RKI-1447 is a potent small molecule inhibitor of ROCK1 and ROCK2 with IC50 values of 14.5 nM and 6.2 nM, respectively.

IC50 & Target

ROCK2

6.2 nM (IC50)

ROCK1

14.5 nM (IC50)

In Vitro

RKI-1447 is a Type I kinase inhibitor that binds the ATP binding site through interactions with the hinge region and the DFG motif. RKI-1447 suppresses phosphorylation of the ROCK substrates mLC-2 and MYPT-1 in human cancer cells, but has no effect on the phosphorylation levels of the AKT, MEK and S6 kinase at concentrations as high as 10 μM. RKI-1447 is also highly selective at inhibiting ROCK-mediated cytoskeleton re-organization. RKI-1447 inhibits migration, invasion and anchorage-independent tumor growth of breast cancer cells[1].

In Vivo

RKI-1447 is highly effective at inhibiting the outgrowth of mammary tumors in a transgenic mouse model. RKI-1447 inhibits mammary tumor growth by 87% and on average the mammary tumors from RKI-1447 treated mice are 7.7 fold smaller compared to those tumors from mice treated with the vehicle control[1].

Molecular Weight

326.37

Formula

C₁₆H₁₄N₄O₂S

CAS No.

1342278-01-6

SMILES

O=C(NC1=NC(C2=CC=NC=C2)=CS1)NCC3=CC=CC(O)=C3

Shipping

Room temperature in continental US; may vary elsewhere

Storage
Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : ≥ 50 mg/mL (153.20 mM)

H2O : < 0.1 mg/mL (insoluble)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.0640 mL 15.3200 mL 30.6401 mL
5 mM 0.6128 mL 3.0640 mL 6.1280 mL
10 mM 0.3064 mL 1.5320 mL 3.0640 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.5 mg/mL (7.66 mM); Clear solution

  • 2.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 2.5 mg/mL (7.66 mM); Clear solution

*All of the co-solvents are provided by MCE.
References
Kinase Assay
[1]

Compounds are tested on three separate days with 8 point dilutions performed in duplicate to determine average IC50 values. The assay conditions are optimized to 15 µL of kinase reaction volume with 5 ng of enzyme in 50 mM HEPES (pH 7.5), 10 mM MgCl2, 1 mM EGTA, and 0.01% Brij-35. The reaction is incubated for 1 h at room temperature in the presence of 1.5 µM of peptide substrate with 12.5 µM of ATP (for ROCK1) or 2 µM of substrate with 50 µM of ATP (for ROCK2). The reaction is then stopped and the ratio of phosphorylated to unphosphorylated peptides is determined by selective cleavage of only the unphosphorylated peptide. The ratio of the signals at 445 nm and 520 nm is measured. IC50 values are determined using fitted curves with GraphPad Prism 5 software[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Assay
[1]

NIH 3T3 cells are plated at 8000 cells/well in 8-chamber slides in serum free media for 24 hours, and treated with vehicle, 1 μM RKI-1447 or 1 μM RKI-1313 for 1 hour. The cells are then stimulated with complete media, 10 μM LPA, 200 ng/mL bradykinin or 30 ng/mL PDGF for 30 mins. After stimulation, the cells are fixed in 4% paraformaldehyde and stained with Texas-Red Phalloidin. Mounting medium containing DAPI is then added and at least 100 cells per well are observed[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration
[1]

Mice: MMTV/neu transgenic mice are treated i.p. daily for 14 days with either Vehicle [20%-2-hydroxypropyl-beta-cyclodextrin (HPCD)] or 200 mpk RKI-1447 dissolved in freshly prepared HPCD. The percent change in volume is calculated on the basis of the tumor volume on the last day of treatment (Vf) relative to that on the day of initiation of treatment (V0). The average percent change in tumor volume is then calculated for each treatment group[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

References
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RKI-1447
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HY-15755
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