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Cyclopamine-KAAD Sale

(Synonyms: 3-酮-N-氨基乙基-N'-氨基己酰二氢肉桂酰环杷明,Cyclopamine-KAAD) 目录号 : GC43346

A potent inhibitor of hedgehog signaling

Cyclopamine-KAAD Chemical Structure

Cas No.:306387-90-6

规格 价格 库存 购买数量
500μg
¥6,766.00
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1mg
¥12,249.00
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产品描述

Cyclopamine-KAAD is a potent inhibitor of hedgehog signaling with an IC50 value of 20 nM in a Shh-LIGHT2 assay. It blocks binding of BODIPY-cyclopamine to cells expressing Smoothened (Smo) in a dose-dependent manner. Cyclopamine-KAAD is cell-permeable and binds to SmoA1 to promote its exit from the endoplasmic reticulum. It inhibits the invasion and migration (45.9 and 43.3% inhibition, respectively) of Bel-7402 hepatocarcinoma cells and decreases the expression of nuclear glioma-associated oncogene 1 (Gli1) and cytosolic MMP-9, pERK1, and pERK2 proteins in a dose-dependent manner. Cyclopamine-KAAD also increases TRAIL-mediated cell death in NCH82 and NCH89 human glioblastoma cultures and upregulates expression of the death receptors DR4 and DR5 in LN229 and U251 glioma cells.

Chemical Properties

Cas No. 306387-90-6 SDF
别名 3-酮-N-氨基乙基-N'-氨基己酰二氢肉桂酰环杷明,Cyclopamine-KAAD
Canonical SMILES CC1=C2[C@](CC[C@@]31O[C@@](C[C@H](C)CN4CCNC(CCCCCNC(CCC5=CC=CC=C5)=O)=O)([H])[C@]4([H])[C@H]3C)([H])[C@]6([H])CC=C7CC(CC[C@]7(C)[C@@]6([H])C2)=O
分子式 C44H63N3O4 分子量 698
溶解度 Chloroform: Slightly soluble,Methanol: Slightly soluble 储存条件 Store at -20°C
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1 mM 1.4327 mL 7.1633 mL 14.3266 mL
5 mM 0.2865 mL 1.4327 mL 2.8653 mL
10 mM 0.1433 mL 0.7163 mL 1.4327 mL
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Research Update

A NanoBRET-Based Binding Assay for Smoothened Allows Real-time Analysis of Ligand Binding and Distinction of Two Binding Sites for BODIPY-cyclopamine

Mol Pharmacol 2020 Jan;97(1):23-34.PMID:31707356DOI:10.1124/mol.119.118158.

Smoothened (SMO) is a GPCR that mediates hedgehog signaling. Hedgehog binds the transmembrane protein Patched, which in turn regulates SMO activation. Overactive SMO signaling is oncogenic and is therefore a clinically established drug target. Here we establish a nanoluciferase bioluminescence resonance energy transfer (NanoBRET)-based ligand binding assay for SMO providing a sensitive and high throughput-compatible addition to the toolbox of GPCR pharmacologists. In the NanoBRET-based binding assay, SMO is N terminally tagged with nanoluciferase (Nluc) and binding of BODIPY-cyclopamine is assessed by quantifying resonance energy transfer between receptor and ligand. The assay allowed kinetic analysis of ligand-receptor binding in living HEK293 cells, competition binding experiments using commercially available SMO ligands (SANT-1, Cyclopamine-KAAD, SAG1.3 and purmorphamine), and pharmacological dissection of two BODIPY-cyclopamine binding sites. This high throughput-compatible assay is superior to commonly used SMO ligand binding assays in the separation of specific from non-specific ligand binding and, provides a suitable complement to chemical biology strategies for the discovery of novel SMO-targeting drugs. SIGNIFICANCE STATEMENT: We established a NanoBRET-based binding assay for SMO with superior sensitivity compared to fluorescence-based assays. This assay allows distinction of two separate binding sites for BODIPY-cyclopamine on the SMO transmembrane core in live cells in real time. The assay is a valuable complement for drug discovery efforts and will support a better understanding of Class F GPCR pharmacology.

Sonic hedgehog signaling pathway is activated in ALK-positive anaplastic large cell lymphoma

Cancer Res 2009 Mar 15;69(6):2550-8.PMID:19244133DOI:10.1158/0008-5472.CAN-08-1808.

Deregulation of the sonic hedgehog (SHH) signaling pathway has been implicated in several cancers but has not been explored in T-cell lymphomas. Here, we report that the SHH/GLI1 signaling pathway is activated in anaplastic lymphoma kinase (ALK)-positive anaplastic large cell lymphoma (ALCL). We show that SHH, but not its transcriptional effector GLI1, is amplified in ALK+ ALCL tumors and cell lines, and that SHH and GLI1 proteins are highly expressed in ALK+ ALCL tumors and cell lines. We also show that inhibition of SHH/GLI1 signaling with Cyclopamine-KAAD, as well as silencing GLI1 gene expression by small interfering (si)RNA, decreased cell viability and clonogenicity of ALK+ ALCL cells. Transfection of wild-type or mutant NPM-ALK into 293T cells showed that only wild-type NPM-ALK increased GLI1 protein levels and activated SHH/GLI1 signaling as shown by increase of CCND2 mRNA levels. Inhibition of ALK tyrosine kinase and phosphatidylinositol 3-kinase (PI3K)/AKT or forced expression of pAKT down-regulated or up-regulated SHH/GLI1 signaling, respectively. Inhibition of GSK3beta in 293T cells also increased protein levels of GLI1. In conclusion, the SHH/GLI1 signaling pathway is activated in ALK+ ALCL. SHH/GLI1 activation is the result of SHH gene amplification and is further mediated by NPM-ALK through activation of PI3K/AKT and stabilization of GLI1 protein. There is a positive synergistic effect between the SHH/GLI1 and PI3K/AKT pathways that contributes to the lymphomagenic effect of NPM-ALK.

ABCG2 is a direct transcriptional target of hedgehog signaling and involved in stroma-induced drug tolerance in diffuse large B-cell lymphoma

Oncogene 2011 Dec 8;30(49):4874-86.PMID:21625222DOI:10.1038/onc.2011.195.

Successful treatment of diffuse large B-cell lymphoma (DLBCL) is frequently hindered by the development of resistance to conventional chemotherapy resulting in disease relapse and high mortality. High expression of antiapoptotic and/or drug transporter proteins induced by oncogenic signaling pathways has been implicated in the development of chemoresistance in cancer. Previously, our studies showed that high expression of adenosine triphosphate-binding cassette drug transporter ABCG2 in DLBCL correlated inversely with disease- and failure-free survival. In this study, we have implicated activated hedgehog (Hh) signaling pathway as a key factor behind high ABCG2 expression in DLBCL through direct upregulation of ABCG2 gene transcription. We have identified a single binding site for GLI transcription factors in the ABCG2 promoter and established its functionality using luciferase reporter, site-directed mutagenesis and chromatin-immunoprecipitation assays. Furthermore, in DLBCL tumor samples, significantly high ABCG2 and GLI1 levels were found in DLBCL tumors with lymph node involvement in comparison with DLBCL tumor cells collected from pleural and/or peritoneal effusions. This suggests a role for the stromal microenvironment in maintaining high levels of ABCG2 and GLI1. Accordingly, in vitro co-culture of DLBCL cells with HS-5 stromal cells increased ABCG2 mRNA and protein levels by paracrine activation of Hh signaling. In addition to ABCG2, co-culture of DLBCL cells with HS-5 cells also resulted in increase expression of the antiapoptotic proteins BCL2, BCL-xL and BCL2A1 and in induced chemotolerance to doxorubicin and methotrexate, drugs routinely used for the treatment of DLBCL. Similarly, activation of Hh signaling in DLBCL cell lines with recombinant Shh N-terminal peptide resulted in increased expression of BCL2 and ABCG2 associated with increased chemotolerance. Finally, functional inhibition of ABCG2 drug efflux activity with fumitremorgin C or inhibition of Hh signaling with Cyclopamine-KAAD abrogated the stroma-induced chemotolerance suggesting that targeting ABCG2 and Hh signaling may have therapeutic value in overcoming chemoresistance in DLBCL.