Evidence map›Paper›PMID 26419724›Full record

ArticleScientific reports2015

Targeting substrate-site in Jak2 kinase prevents emergence of genetic resistance.

Meenu Kesarwani, Erika Huber, Zachary Kincaid, Chris R Evelyn, Jacek Biesiada, Mark Rance, Mahendra B Thapa, Neil P Shah, Jarek Meller, Yi Zheng and 1 more

Abstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  15. Frontiers in cell and developmental biology · 2022
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  19. Structural Basis of Inhibition of DCLK1 by Ruxolitinib.International journal of molecular sciences · 2021
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Meenu KesarwaniCincinnati Children's Hospital Medical Center, Cancer Blood Disease Institute, Divisions of Experimental Hematology and Cancer Pathology, Cincinnati, Ohio, 45229 USA.
Erika HuberCincinnati Children's Hospital Medical Center, Cancer Blood Disease Institute, Divisions of Experimental Hematology and Cancer Pathology, Cincinnati, Ohio, 45229 USA.
Zachary KincaidCincinnati Children's Hospital Medical Center, Cancer Blood Disease Institute, Divisions of Experimental Hematology and Cancer Pathology, Cincinnati, Ohio, 45229 USA.
Chris R EvelynCincinnati Children's Hospital Medical Center, Cancer Blood Disease Institute, Divisions of Experimental Hematology and Cancer Pathology, Cincinnati, Ohio, 45229 USA.
Jacek BiesiadaCincinnati Children's Hospital Medical Center, Cancer Blood Disease Institute, Divisions of Experimental Hematology and Cancer Pathology, Cincinnati, Ohio, 45229 USA.
Mark RanceDepartment of Molecular Genetics, Biochemistry and Microbiology University of Cincinnati College of Medicine, University of Cincinnati, Ohio 45229 USA.
Mahendra B ThapaDepartment of Molecular Genetics, Biochemistry and Microbiology University of Cincinnati College of Medicine, University of Cincinnati, Ohio 45229 USA.
Neil P ShahDivision of Hematology-Oncology UCSF School of Medicine, San Francisco, California, 94143 USA.
Jarek MellerCincinnati Children's Hospital Medical Center, Cancer Blood Disease Institute, Divisions of Experimental Hematology and Cancer Pathology, Cincinnati, Ohio, 45229 USA.
Yi ZhengCincinnati Children's Hospital Medical Center, Cancer Blood Disease Institute, Divisions of Experimental Hematology and Cancer Pathology, Cincinnati, Ohio, 45229 USA.
Mohammad AzamCincinnati Children's Hospital Medical Center, Cancer Blood Disease Institute, Divisions of Experimental Hematology and Cancer Pathology, Cincinnati, Ohio, 45229 USA.

Funding

Improved therapeutic approaches for hematological disorder treated with tyrosineR01CA155091 · NCI · CINCINNATI CHILDRENS HOSP MED CTR · PI AZAM, MOHAMMAD · 2012 to 2016
$1.6M
Mechanisms of drug resistance in Myeloproliferative neoplasms treated with JAK2 iR21HL114074 · NHLBI · CINCINNATI CHILDRENS HOSP MED CTR · PI AZAM, MOHAMMAD · 2013 to 2014
$407k
NCI NIH HHS 1R01CA155091NCI NIH HHS R01 CA155091NHLBI NIH HHS 1R21HL114074NHLBI NIH HHS R21 HL114074
6 · The paper itself

Abstract

Emergence of genetic resistance against kinase inhibitors poses a great challenge for durable therapeutic response. Here, we report a novel mechanism of JAK2 kinase inhibition by fedratinib (TG101348) that prevents emergence of genetic resistance. Using in vitro drug screening, we identified 211 amino-acid substitutions conferring resistance to ruxolitinib (INCB018424) and cross-resistance to the JAK2 inhibitors AZD1480, CYT-387 and lestaurtinib. In contrast, these resistant variants were fully sensitive to fedratinib. Structural modeling, coupled with mutagenesis and biochemical studies, revealed dual binding sites for fedratinib. In vitro binding assays using purified proteins showed strong affinity for the substrate-binding site (Kd = 20 nM) while affinity for the ATP site was poor (Kd = ~8 μM). Our studies demonstrate that mutations affecting the substrate-binding pocket encode a catalytically incompetent kinase, thereby preventing emergence of resistant variants. Most importantly, our data suggest that in order to develop resistance-free kinase inhibitors, the next-generation drug design should target the substrate-binding site.

Indexed as

Binding SitesCatalytic DomainAdenosine TriphosphateAllosteric RegulationAmino Acid SubstitutionBenzenesulfonamidesCodonDrug ResistanceDrug Resistance, MultipleHumansJanus Kinase 2Models, MolecularMolecular ConformationMutagenesis, Site-DirectedMutationNitrilesAdenosine TriphosphateBenzenesulfonamidesCodonfedratinibJanus Kinase 2NitrilesProtein Kinase InhibitorsPyrazolesPyrimidinesPyrrolidinesruxolitinibSulfonamides

Identifiers

PMID26419724
PMCPMC4588578

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.