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Ruxolitinib (INCB018424)
Catalog No.S1378
For research use only.
Ruxolitinib (INCB018424) is the first potent, selective, JAK1/2 inhibitor to enter the clinic with IC50 of 3.3 nM/2.8 nM in cell-free assays, >130-fold selectivity for JAK1/2 versus JAK3. Ruxolitinib kills tumor cells through toxic mitophagy. Ruxolitinib induces autophagy and enhances apoptosis.
CAS No. 941678-49-5
Selleck's Ruxolitinib (INCB018424) has been cited by 462 publications
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Biological Activity
| Description | Ruxolitinib (INCB018424) is the first potent, selective, JAK1/2 inhibitor to enter the clinic with IC50 of 3.3 nM/2.8 nM in cell-free assays, >130-fold selectivity for JAK1/2 versus JAK3. Ruxolitinib kills tumor cells through toxic mitophagy. Ruxolitinib induces autophagy and enhances apoptosis. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| In vitro |
INCB018424 potently and selectively inhibits JAK2V617F-mediated signaling and proliferation in Ba/F3 cells and HEL cells. INCB018424 markedly increases apoptosis in a dose dependent manner in Ba/F3 cells. INCB018424 (64 nM) results in a doubling of cells with depolarized mitochondria in Ba/F3 cells. INCB018424 inhibits proliferating of erythroid progenitors from normal donors and polycythemia vera patients with IC50 of 407 nM and 223 nM, respectively. INCB018424 demonstrates remarkable potency against erythroid colony formation with IC50 of 67nM. [1] |
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| Cell Data |
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| Assay |
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| In vivo | INCB018424 (180 mg/kg, orally, twice a day) results in survive rate of greater than 90% by day 22 in a JAK2V617F-driven mouse model. INCB018424 (180 mg/kg, orally, twice a day) markedly reduces splenomegaly and circulating levels of inflammatory cytokines, and preferentially eliminated neoplastic cells, resulting in significantly prolonged survival without myelosuppressive or immunosuppressive effects in a JAK2V617F-driven mouse model. [1] The primary end point is reached in 41.9% of patients in the Ruxolitinib group as compared with 0.7% in the placebo group in the double-blind trial of myelofibrosis. Ruxolitinib results in maintaining of reduction in spleen volume and improvement of 50% or more in the total symptom score. [2] A total of 28% of the patients in the Ruxolitinib (15 mg twice daily) group has at least a 35% reduction in spleen volume at week 48 in patients with myelofibrosis, as compared with 0% in the group receiving the best available therapy. The mean palpable spleen length has decreased by 56% with Ruxolitinib but has increased by 4% with the best available therapy at week 48. Patients in the ruxolitinib group has an improvement in overall quality-of-life measures and a reduction in symptoms associated with myelofibrosis. [3] |
Protocol (from reference)
| Kinase Assay:[1] |
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| Cell Research:[1] |
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| Animal Research:[1] |
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Solubility (25°C)
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In vitro |
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In vivo |
Add solvents to the product individually and in order |
5mg/mL |
Chemical Information
| Molecular Weight | 306.37 | ||
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| Formula | C17H18N6 |
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| CAS No. | 941678-49-5 | ||
| Storage | 3 years | -20°C | powder |
| 2 years | -80°C | in solvent | |
| Smiles | C1CCC(C1)C(CC#N)N2C=C(C=N2)C3=C4C=CNC4=NC=N3 | ||
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Clinical Trial Information
| NCT Number | Recruitment | Interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|---|
| NCT05034822 | Recruiting | Drug: Ruxolitinib cream | Atopic Dermatitis|Open Label | Incyte Corporation|Innovaderm Research | December 16 2021 | Phase 1 |
| NCT04908735 | Recruiting | Drug: Ruxolitinib | Hematopoietic Stem Cell Transplant (HSCT)|Bronchiolitis Obliterans (BO) | Children''s Hospital Medical Center Cincinnati | November 12 2021 | Phase 2 |
| NCT05121142 | Recruiting | Drug: Ruxolitinib | Acute-graft-versus-host Disease|Chronic Graft-versus-host-disease | Children''s Hospital Medical Center Cincinnati | October 27 2021 | Phase 1 |
| NCT04551131 | Recruiting | Drug: Ruxolitinib|Drug: Dexamethasone|Drug: Etoposide | Hemophagocytic Lymphohistiocytosis | St. Jude Children''s Research Hospital|Incyte Corporation|North American Consortium for Histiocytosis | July 13 2021 | Phase 1|Phase 2 |
(data from https://clinicaltrials.gov, updated on 2022-01-17)
Tech Support
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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Frequently Asked Questions
Question 1:
What is the difference between S2902 and S1378 which seem to have same structure formula according to the product information?
Answer:
These two chemicals are the two different chiral forms of Ruxolitinib. S2902 S-Ruxolitinib is the S form and S1378 Ruxolitinib is the D form. One of the carbon atoms in this molecule is asymmetric, making the two molecules mirror images of each other. The biological activities of these two molecules can be very different because of the confirmation differences.
Question 2:
How about the half-life of the compound (Ruxolitinib)? How long is the duration of the inhibitory effect on JAK-STAT signaling?
Answer:
The half-life of this compound in body is about 2~3 hours according to previous study. Generally, it is longer in vitro culture medium than in vivo. In paper, Ruxolitinib was also used for 24hours. http://www.bloodjournal.org/cgi/pmidlookup?view=long&pmid=24711661.
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