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Catalog No.
Hedgehog (Hh) signaling Inhibitor
Grouped product items
SizePriceStock Qty
10mM (in 1mL DMSO)
In stock
Evaluation Sample
In stock
In stock
In stock
In stock

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Cyclopamine is a naturally occurring Hedgehog (Hh)?specific small?molecule signaling steroidal alkaloid inhibitor, causes a profound inhibition of tumor growth, has significant anti?invasive, anti?proliferative and anti?estrogenic potency in human breast cancer cells [2] [1]. The EC50 of cyclopamine is 10.57 μM, it was identified by an FXR-bla (farnesoid X receptor- b-lactamase) assay [3].

Hh signaling pathway plays a critical role in embryonic development and tumorigenesis [4]. Hh signaling pathway shows saliency in regulating cellular proliferation and differentiation in a wide array of human tissues. It is related to aberrant cell survival in numerous human malignancies, ranging from BCCs and medulloblastomas to small cell lung, gastrointestinal, breast and prostate tumors [1].

Treated with cyclopamine (10 or 20 μM) only and incubated for time periods ranging from 0 to10 days, MCF-7 cells and MDA?MB?231 cells displayed a significant reduction in proliferation rate compared with the control cells on days 3 and 6 (P

Embryoes exposed to cyclopamine resulted in visible external defects, including cyclopia, proboscis formation, microphthalmia, thoracic lordosis, amelia and decreased body size. Examination of gastrointestinal organs revealed severe deficits, including less length of the gut tube and mesenchymal cell numbers in foregut-derived organs. Ectopic structures in duodenum, stomach, and dorsal pancreas were also found [5].

[1].  Marc J. Meth and Jeffrey M. Weinberg. Cyclopamine: Inhibiting Hedgehog in the Treatment of Psoriasis. Continuing Medical Education, 2006, 78: 185-188.
[2].  Jun Che, Fu-Zheng Zhang, Chao-Qian Zhao, et al. Cyclopamine is a novel Hedgehog signaling inhibitor with significant anti?proliferative, anti?invasive and anti?estrogenic potency in human breast cancer cells. Oncology Letters, 2013, 5: 1417-1421.
[3].  Chia-Wen Hsu, Jinghua Zhao, Ruili Huang, et al. Quantitative High-Throughput Profiling of Environmental Chemicals and Drugs that Modulate Farnesoid X Receptor. Scientific Reports, 2014, 4: 6437.
[4].  Robert J. Lipinski, Paul R. Hutson, Paul W. Hannam, et al. Dose- and Route-Dependent Teratogenicity, Toxicity, and Pharmacokinetic Profiles of the Hedgehog Signaling Antagonist Cyclopamine in the Mouse. Toxicological Sciences, 2008, 104(1):189-197.
[5].  Seung K. Kim and Douglas A. Melton. Pancreas development is promoted by cyclopamine, a Hedgehog signaling inhibitor. Proc. Natl. Acad. Sci. USA, 1998, 95: 13036-13041.

Product Citation

Chemical Properties

Physical AppearanceA solid
StorageStore at -20°C
Cas No.4449-51-8
Solubility≥6.9mg/mL in DMSO
Chemical Name(3S,3'R,3'aS,6'S,6aS,6bS,7'aR,9R,11aS,11bR)-3',6',10,11b-tetramethylspiro[2,3,4,6,6a,6b,7,8,11,11a-decahydro-1H-benzo[a]fluorene-9,2'-3a,4,5,6,7,7a-hexahydro-3H-furo[3,2-b]pyridine]-3-ol
SDFDownload SDF
Shipping ConditionEvaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request.
General tipsFor obtaining a higher solubility, please warm the tube at 37°C and shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.


Cell experiment: [1]

Cell lines

AA/C1, RG/C2, CaCo2, HT29 and SW480 cells

Preparation method

The solubility of this compound in DMSO is

Reaction Conditions

20 μM, 48 hours for cell yield inhibition 10 μM, 48 hours for apoptosis induction (measured by PARP expression)


Treatment of cyclopamine significantly reduced cell yield in all the tested human colorectal tumour cell lines with a dose-dependent manner. Cyclopamine also remarkably induced apoptosis in each of the cell lines. The CaCo2 cell line showed particular sensitivity to cyclopamine-induced apoptosis.

Animal experiment: [2]

Animal models

C57BL/6J mice

Dosage form

Intraperitoneal injection, 160 mg/kg/day for 31 hours.


Cyclopamine showed teratogenic potential in the tested animals. Affected embryos were slightly smaller than normal littermates and exhibited mild blunting of the snout as well as cleft lip and palate. Embryos exhibited unilateral and bilateral complete cleft lip with clefts extending into the primary and secondary palate. Facial clefts were often accompanied by open eyelid defects and in one embryo by forelimb syndactyly.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.


[1] Qualtrough D, Buda A, Gaffield W, et al. Hedgehog signalling in colorectal tumour cells: induction of apoptosis with cyclopamine treatment. International journal of cancer, 2004, 110(6): 831-837.

[2] Lipinski R J, Hutson P R, Hannam P W, et al. Dose-and route-dependent teratogenicity, toxicity, and pharmacokinetic profiles of the hedgehog signaling antagonist cyclopamine in the mouse. Toxicological sciences, 2008, 104(1): 189-197.

Biological Activity

Description Purmorphamine is a blocker of BODIPY-cyclopamine binding to Smo with IC50 of ~ 1.5 μM and also is an inducer of osteoblast differentiation with EC50 of 1 μM.
Targets Smoothened (Smo)          
IC50 46 nM          

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