LDN-193189


Catalog No. size PriceQuantity
M6896-2 2mg solid $111
M6896-10 10mg solid $452

Description

Cas:1062368-24-4 (free base)

Product Information

LDN193189 is a highly potent small molecule BMP inhibitor with IC50 of 5 and 30 nM for ALK2 and ALK3, respectively. LDN193189 also inhibits BMP type I receptors ALK6 (TGFβ1/BMP signaling) and subsequent SMAD phosphorylation.

 

Chemical Formula: C25H22N6

 

Exact Mass: 406.19059

 

Molecular Weight: 406.48238
 
Elemental Analysis: C, 73.87; H, 5.46; N, 20.67
 
Related CAS #:
1062368-24-4 (free base)   
1062368-62-0 (HCl)   
1435934-00-1 (dihydrochloride)  
 
Synonym:
 
DM-3189
 
Chemical Name: 4-[6-(4-Piperazin-1-yl-phenyl)-pyrazolo[1,5-a]pyrimidin-3-yl]-quinoline
 
InChi Key:
CDOVNWNANFFLFJ-UHFFFAOYSA-N
 
InChi Code: InChI=1S/C25H22N6/c1-2-4-24-22(3-1)21(9-10-27-24)23-16-29-31-17-19(15-28-25(23)31)18-5-7-20(8-6-18)30-13-11-26-12-14-30/h1-10,15-17,26H,11-14H2
 
Smiles Code:
C1(C2=C3N=CC(C4=CC=C(N5CCNCC5)C=C4)=CN3N=C2)=CC=NC6=CC=CC=C16
 
 
Technical Data:
 
Appearance: Solid powder
Purity: >98% (or refer to the Certificate of Analysis)
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility: Soluble in DMSO, not in water
Shelf Life: >2 years if stored properly
Drug Formulation: This drug may be formulated in DMSO
Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code: 2934.99.9001
 

In Vitro:

LDN193189 inhibits BMP4-mediated Smad1, Smad5 and Smad8 activation with greater potency than did dorsomorphin (IC50=5 nM versus 470 nM) while retaining 200-fold selectivity for BMP signaling versus TGF-β signaling (IC50 for TGF-β ≥1,000 nM). LDN193189 efficiently inhibits transcriptional activity of the BMP type I receptors ALK2 and ALK3 (IC50=5 nM and 30 nM, respectively), and the TGF-β type I receptors ALK4, ALK5 and ALK7 (IC50≥500 nM) and increases selectivity for BMP signaling versus AMP-activated protein kinase, PDGFR and MAPK signaling pathways as compared to the parent compound. LDN-193189 blocks the transcriptional activity induced by either constitutively active ALK2R206H or ALK2Q207D mutant proteins. These findings suggest that LDN193189 might affect BMP-induced osteoblast differentiation. In fact, LDN193189 inhibits the induction of alkaline phosphatase activity in C2C12 cells by BMP4 even when administered 12 h after BMP stimulation, indicating sustained BMP signaling activity is needed for osteogenic differentiation.

 

In Vivo

In the first experiment, LDN193189 (3 mg/kg) is injected intraperitoneally twice a day after tumors became palpable 7 days post-implantation. The growth rates between the control vehicle- and LDN193189-treated mice are not significantly different after the first 5 weeks, but differences in the growth rates are detected after 6 and 7 weeks post-treatment. In the second experiment, cells are isolated from PCa-118b tumors and injected subcutaneously into SCID mice (1×106 cells per mouse). LDN193189 or vehicle is applied to mice 5 days post-tumor cell injection before tumors are palpable. The differences in the average growth rates between these two groups, as measured by tumor size, are significant at 6 and 7 weeks post-treatment. The tumor weights also show significant differences at the termination of the study at week 7. The X-ray of the tumors shows that the ectopic bone volume and bone density are reduced in the tumors of LDN193189-treated group compared to that of controls. Co-incubation of pulmonary arterial smooth muscle cells (PASMCs) from the pulmonary arterial hypertension (PAH) rats with UK-92480 and LDN193189 completely inhibited the anti-proliferation and up-regulation of the bone morphogenetic protein (BMPR2) and Cx40 expression by the UK-92480.
 
 

References

 
  1. Saeed O, Otsuka F, Polavarapu R, Karmali V, Weiss D, Davis T, Rostad B, Pachura K, Adams L, Elliott J, Taylor WR, Narula J, Kolodgie F, Virmani R, Hong CC, Finn AV. Pharmacological Suppression of Hepcidin Increases Macrophage Cholesterol Efflux and Reduces Foam Cell Formation and Atherosclerosis. Arterioscler Thromb Vasc Biol. 2011 Nov 17. [Epub ahead of print] PubMed PMID: 22095982.
 
  1. Kudo TA, Kanetaka H, Mizuno K, Ryu Y, Miyamoto Y, Nunome S, Zhang Y, Kano M, Shimizu Y, Hayashi H. Dorsomorphin stimulates neurite outgrowth in PC12 cells via activation of a protein kinase A-dependent MEK-ERK1/2 signaling pathway. Genes Cells. 2011 Nov;16(11):1121-32. doi: 10.1111/j.1365-2443.2011.01556.x. Epub 2011 Oct 12. PubMed PMID: 21988724.
 
  1. Vogt J, Traynor R, Sapkota GP. The specificities of small molecule inhibitors of the TGFß and BMP pathways. Cell Signal. 2011 Nov;23(11):1831-42. Epub 2011 Jun 29. PubMed PMID: 21740966.
 
  1. Cross EE, Thomason RT, Martinez M, Hopkins CR, Hong CC, Bader DM. Application of small organic molecules reveals cooperative TGFβ and BMP regulation of mesothelial cell behaviors. ACS Chem Biol. 2011 Sep 16;6(9):952-61. Epub 2011 Jul 20. PubMed PMID: 21740033; PubMed Central PMCID: PMC3177035.
 
  1. Theurl I, Schroll A, Sonnweber T, Nairz M, Theurl M, Willenbacher W, Eller K, Wolf D, Seifert M, Sun CC, Babitt JL, Hong CC, Menhall T, Gearing P, Lin HY, Weiss G. Pharmacologic inhibition of hepcidin expression reverses anemia of chronic inflammation in rats. Blood. 2011 Nov 3;118(18):4977-84. Epub 2011 Jul 5. PubMed PMID: 21730356; PubMed Central PMCID: PMC3208302.
 
Products are for research use only. Not for human use.

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