Z3 (NSC 42834) selectively inhibited Jak2 kinase function with no effect on Tyk2 or c-Src kinase function. Z3 significantly inhibited proliferation of the Jak2-V617F-expressing, human erythroleukemia cell line, HEL 92.1.7. The Z3-mediated reduction in cell proliferation correlated with reduced Jak2 and STAT3 tyrosine phosphorylation levels as well as marked cell cycle arrest. Finally, Z3 (NSC 42834) inhibited the growth of hematopoietic progenitor cells isolated from the bone marrow of an essential thrombocythemia patient harboring the Jak2-V617F mutation and a polycythemia vera patient carrying a Jak2-F537I mutation.
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
|Solubility||DMSO 40 mg/mL|
Prospect of JAK2 inhibitor therapy in myeloproliferative neoplasms.
Atallah E, et al. Expert Rev Anticancer Ther. 2009 May;9(5):663-70. PMID: 19445582.
Jak2 inhibitors: rationale and role as therapeutic agents in hematologic malignancies.
Sayyah J, et al. Curr Oncol Rep. 2009 Mar;11(2):117-24. PMID: 19216843.
Z3, a novel Jak2 tyrosine kinase small-molecule inhibitor that suppresses Jak2-mediated pathologic cell growth.
Sayyah J, et al. Mol Cancer Ther. 2008 Aug;7(8):2308-18. PMID: 18723478.
|Related JAK Products|
PF-06651600 is a potent and irreversible JAK3-selective inhibitor with an IC50 of 33.1 nM but without activity (IC50 > 10 000 nM) against JAK1, JAK2, and TYK2.
Upadacitinib (ABT-494) is a potent and selective Janus kinase (JAK) 1 inhibitor being developed for the treatment of several autoimmune disorders with an IC50 of 43 nM.
Ruxolitinib phosphate(INCB018424 phosphate) is the first potent, selective, JAK1/2 inhibitor to enter the clinic with IC50 of 3.3 nM/2.8 nM, >130-fold selectivity for JAK1/2 versus JAK3.
Oclacitinib is a novel inhibitor of JAK family members with IC50 ranging from 10 to 99 nM and JAK1-dependent cytokines with IC50 ranging from 36 to 249 nM, which did not inhibit a panel of 38 non-JAK kinases.
Baricitinib phosphate(INCB 028050; LY 3009104) is a selective JAK1 and JAK2 inhibitor with IC50 of 5.9 nM and 5.7 nM, ~70 and ~10-fold selective versus JAK3 and Tyk2, no inhibition to c-Met and Chk2.
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