1. MAPK/ERK Pathway
  2. Raf
  3. BI-882370

BI-882370 

Cat. No.: HY-107779
Handling Instructions

BI-882370 is a potent and selective RAF kinase inhibitor that binds to the ATP binding site of the kinase positioned in the DFG-out (inactive) conformation of the BRAF kinase. BI-882370 (BI 882370) inhibits the oncogenic BRAFV600E-mutant, the WT BRAF and CRAF kinases with IC50s of 0.4, 0.8, and 0.6 nM, respectively. BI-882370 also inhibits SRC family kinases.

For research use only. We do not sell to patients.

BI-882370 Chemical Structure

BI-882370 Chemical Structure

CAS No. : 1392429-79-6

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Description

BI-882370 is a potent and selective RAF kinase inhibitor that binds to the ATP binding site of the kinase positioned in the DFG-out (inactive) conformation of the BRAF kinase. BI-882370 (BI 882370) inhibits the oncogenic BRAFV600E-mutant, the WT BRAF and CRAF kinases with IC50s of 0.4, 0.8, and 0.6 nM, respectively. BI-882370 also inhibits SRC family kinases[1].

IC50 & Target[1]

Braf

0.6 nM (IC50)

c-Raf

0.8 nM (IC50)

BRafV600E

0.4 nM (IC50)

In Vitro

BI-882370 (0.9-6000 nM; 3 days) inhibits the BRAF-mutant human melanoma and colorectal cancer cells proliferation with a EC50 range of 1-10 nM[1].
BI 882370 (0.1-100 nM, 0.1-3000 nM; 2 hours) results in a reduction of p-MEK1/2, p-ERK1/2 and cyclin D1/D2 expression in BRAFV600E-mutant A375 cells; induces phosphorylation of MEK1/2 and enhanced phosphorylation of ERK1/2 in WT BRO cells (3-300 nM)[1].
BI 882370 (0.1-100 nM, 0.1-3000 nM; 24 hours) suppresses cyclin D1/D2 expression, induces Kip1/p27 expression at concentrations of 1 nM or higher in BRAFV600E-mutant A375 cells, expression of cyclins D1/D2 or Kip1/p27 is not affected in WT BRO cells[1].

Cell Proliferation Assay[1]

Cell Line: BRAF-mutant and WT melanoma cell lines (A101D, A375, SK-MEL-28, G-361, and BRO); Colorectal cancer cell lines (COLO 205, HT-29, LS411N, and HCT-116)
Concentration: 0.9-6000 nM
Incubation Time: 3 days
Result: Showed a EC50 range of 1-10 nM in an extended panel of BRAF-mutant human melanoma and colorectal cancer cell; while proliferation of BRAF WT cells was inhibited with EC50 >1 μM.

Western Blot Analysis[1]

Cell Line: BRAFV600E-mutant A375 cells; BRAF WT, NRAS-mutant BRO (WT BRO) cells
Concentration: 0.1-100 nM; 0.1-3000 nM
Incubation Time: 2 hours; 24 hours
Result: Resulted in a reduction of phospho-MEK1/2 signals and cyclin D1/D2 expression in BRAFV600E-mutant A375 cells.
In Vivo

BI-882370 (deliver orally; 25 mg/kg, 50 mg/kg; twice daily; 2 weeks) is efficacious in multiple mouse models of BRAF-mutant melanomas and colorectal carcinomas, shows superior efficacy compared with Vemurafenib, Dabrafenib, or Trametinib[1].
BI-882370 (deliver orally; 25 mg/kg; twice daily; 40 days) developes resistance within 3 weeks, but resistance is not observed during 5 weeks of second-line therapy in combination with trametinib[1].
BI-882370 (deliver orally; 60 mg/kg; once daily; 2 weeks) indicates lack of toxicity in terms of clinical chemistry, hematology, pathology, and toxicogenomics in rats[1].

Animal Model: Human melanoma xenografts in nude mice with BRAF-mutant melanomas and colorectal carcinomas cells (A375, COLO 205; G-361, HT-29 cells)[1]
Dosage: 25 mg/kg; 50 mg/kg
Administration: Deliver orally; 25 mg/kg, 50 mg/kg; twice daily; 2 weeks
Result: Regressed tumors partially, upon discontinuation, tumor regrowth was markedly delayed.
Molecular Weight

569.67

Formula

C₂₈H₃₃F₂N₇O₂S

CAS No.

1392429-79-6

SMILES

CCCS(=O)(NC1=CC=C(F)C(N2C=C(C3=CN=CN=C3)C4=NC(N(C5CCN(CC)CC5)C)=CC=C42)=C1F)=O

Shipping

Room temperature in continental US; may vary elsewhere

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

References
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