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317701

Sigma-Aldrich

Dkk Inhibitor II, IIIC3a

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Synonym(s):
Dkk Inhibitor II, IIIC3a, 9-Carboxy-3-(dimethyliminio)-6,7-dihydroxy-10-methyl-3H-phenoxazin-10-ium iodide
Empirical Formula (Hill Notation):
C16H16I2N2O5
Molecular Weight:
570.12
UNSPSC Code:
12352200
NACRES:
NA.77

Assay

≥90% (HPLC)

Quality Level

form

powder

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)
protect from light

color

black

solubility

DMSO: 10 mg/mL
hydrogen: 2.5 mg/mL

shipped in

ambient

storage temp.

2-8°C

General description

An enhanced in solution stable gallocyanine analog that directly and reversibly targets human LRP5/6 (low density lipoprotein-related protein 5/6), and disrupts its interaction with Dkk (Dickkopf) in a competitive manner. Shown to potently reverse DKK1/2/4-mediated inhibition of WNT3A-stimulated reporter gene activity (IC50 ~ 10 - 30 µM in in NIH 3T3 cells) with no effects on sFRP4-mediated inhibition of Wnt signaling. Blocks Dkk-2 - alkaline phosphatase binding to cells expressing LRP5 (IC50 = 1 µM in LRP5 transfected NIH 3T3 cells). Reduces blood glucose levels, improves glucose tolerance, and increases insulin sensitivity in type 2 diabetic mice (1.5 mg/kg, i.p. daily), mainly via its antagonistic action on DKK2. These effects are not observed in DKK2 -/- mice.

Biochem/physiol Actions

Primary Target
LRP5/6
Reversible: yes

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.
Use only fresh DMSO for reconstitution.

Other Notes

Li, X., et al. 2012. Proc. Natl. Acad. Sci. USA109, 11402.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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