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BIO, 5 mg

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WNT pathway activator Inhibits GSK3
SKU: ST10029

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BIO is a reversible and ATP-competitive inhibitor of GSK-3α/β (IC₅₀ = 5 nM) that functions as a WNT pathway activator. Under feeder-free conditions, BIO maintains the undifferentiated state of both mouse and human ES cells. It has been used to promote differentiation of cardiomyocytes from hES and iPS cells. BIO has also been shown to enhance reprogramming of mouse fibroblasts, neural stem cells, and thymocytes to iPS cells.



Molecular Weight 356.17
Molecular Formula C16H10BrN3O2
Chemical Name (3Z)-6-bromo-3-[3-(hydroxyamino)indol-2-ylidene]-1H-indol-2-one
CAS Number 667463-62-9
PubChem Identifier 5287844
Appearance Dark red solid
Purity >95% by HPLC analysis
Alternative Names GSK-3 Inhibitor IX, 6BIO, 6-bromoindirubin-3-oxime
Solubility Soluble in DMSO at 100 mM and ethanol at 50 mM
Reconstitution For a 10 mM concentrated stock solution, reconstitute the compound by adding 1.4 mL of DMSO to the entire contents of vial. If precipitate is observed, warm the solution to 37°C for 2 to 5 minutes.
Storage and Stability Solid: Shipped at room temperature. Store at -20°C. Stable for 6 months when stored as directed.
Solution: Following reconstitution, store aliquots in tightly sealed vials at -20°C. Avoid repeated freeze-thaw cycles.
References Lian, X., et al. (2012) Robust cardiomyocyte differentiation from human pluripotent stem cells via temporal modulation of canonical Wnt signaling. Proc Natl Acad Sci USA 109(27): E1848-1857. PMID: 22645348.

Lluis, F., et al. (2008) Periodic activation of Wnt/beta-catenin signaling enhances somatic cell reprogramming mediated by cell fusion. Cell Stem Cell 3(5): 493-507. PMID: 18983965.

Sato, N., et al. (2004) Maintenance of pluripotency in human and mouse embryonic stem cells through activation of Wnt signaling by a pharmacological GSK-3-specific inhibitor. Nat Med 10(1): 55-63. PMID: 14702635.

Tseng, A.S., et al. (2006) The GSK-3 inhibitor BIO promotes proliferation in mammalian cardiomyocytes. Chem Biol 13(9): 957-963. PMID: 16984885.
Technical Documents

ST10029 Technical Data Sheet


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