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==JAK2-JH2== | |||
<StructureSection load='7f7w' size='340' side='right'caption='[[7f7w]], [[Resolution|resolution]] 1.83Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7F7W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7F7W FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.83Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=36H:2-((1-(2-fluoro-4-((4-(1-isopropyl-1H-pyrazol-4-yl)-5-methylpyrimidin-2-yl)amino)phenyl)piperidin-4-yl)(methyl)amino)ethan-1-ol'>36H</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7f7w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7f7w OCA], [https://pdbe.org/7f7w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7f7w RCSB], [https://www.ebi.ac.uk/pdbsum/7f7w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7f7w ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Janus kinase 2 (JAK2) hyperactivation by JAK2(V617F) mutation leads to myeloproliferative neoplasms (MPNs) and targeting JAK2 could serve as a promising therapeutic strategy for MPNs. Here, we report that Flonoltinib Maleate (FM), a selective JAK2/FLT3 inhibitor, shows high selectivity for JAK2 over the JAK family. Surface plasmon resonance assays verified that FM had a stronger affinity for the pseudokinase domain JH2 than JH1 of JAK2 and had an inhibitory effect on JAK2 JH2V617F. The cocrystal structure confirmed that FM could stably bind to JAK2 JH2, and FM suppressed endogenous colony formation of primary erythroid progenitor cells from patients with MPNs. In several JAK2(V617F)-induced MPN murine models, FM could dose-dependently reduce hepatosplenomegaly and prolong survival. Similar results were observed in JAK2(V617F) bone marrow transplantation mice. FM exhibited strong inhibitory effects on fibrosis of the spleen and bone marrow. Long-term FM treatment showed good pharmacokinetic/pharmacodynamic characteristics with high drug exposure in tumor-bearing tissues and low toxicity. Currently, FM has been approved by the National Medical Products Administration of China (CXHL2000628), and this study will guide clinical trials for patients with MPNs. | |||
Preclinical studies of Flonoltinib Maleate, a novel JAK2/FLT3 inhibitor, in treatment of JAK2(V617F)-induced myeloproliferative neoplasms.,Hu M, Yang T, Yang L, Niu L, Zhu J, Zhao A, Shi M, Yuan X, Tang M, Yang J, Pei H, Yang Z, Chen Q, Ye H, Niu T, Chen L Blood Cancer J. 2022 Mar 7;12(3):37. doi: 10.1038/s41408-022-00628-2. PMID:35256594<ref>PMID:35256594</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: Niu | <div class="pdbe-citations 7f7w" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Janus kinase 3D structures|Janus kinase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Niu L]] | |||
Latest revision as of 12:24, 9 October 2024
JAK2-JH2JAK2-JH2
Structural highlights
Publication Abstract from PubMedJanus kinase 2 (JAK2) hyperactivation by JAK2(V617F) mutation leads to myeloproliferative neoplasms (MPNs) and targeting JAK2 could serve as a promising therapeutic strategy for MPNs. Here, we report that Flonoltinib Maleate (FM), a selective JAK2/FLT3 inhibitor, shows high selectivity for JAK2 over the JAK family. Surface plasmon resonance assays verified that FM had a stronger affinity for the pseudokinase domain JH2 than JH1 of JAK2 and had an inhibitory effect on JAK2 JH2V617F. The cocrystal structure confirmed that FM could stably bind to JAK2 JH2, and FM suppressed endogenous colony formation of primary erythroid progenitor cells from patients with MPNs. In several JAK2(V617F)-induced MPN murine models, FM could dose-dependently reduce hepatosplenomegaly and prolong survival. Similar results were observed in JAK2(V617F) bone marrow transplantation mice. FM exhibited strong inhibitory effects on fibrosis of the spleen and bone marrow. Long-term FM treatment showed good pharmacokinetic/pharmacodynamic characteristics with high drug exposure in tumor-bearing tissues and low toxicity. Currently, FM has been approved by the National Medical Products Administration of China (CXHL2000628), and this study will guide clinical trials for patients with MPNs. Preclinical studies of Flonoltinib Maleate, a novel JAK2/FLT3 inhibitor, in treatment of JAK2(V617F)-induced myeloproliferative neoplasms.,Hu M, Yang T, Yang L, Niu L, Zhu J, Zhao A, Shi M, Yuan X, Tang M, Yang J, Pei H, Yang Z, Chen Q, Ye H, Niu T, Chen L Blood Cancer J. 2022 Mar 7;12(3):37. doi: 10.1038/s41408-022-00628-2. PMID:35256594[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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