Evidence map›Paper›PMID 22778153›Full record

ArticleMolecular cancer therapeutics2012

The novel BCR-ABL and FLT3 inhibitor ponatinib is a potent inhibitor of the MDR-associated ATP-binding cassette transporter ABCG2.

Rupashree Sen, Karthika Natarajan, Jasjeet Bhullar, Suneet Shukla, Hong-Bin Fang, Ling Cai, Zhe-Sheng Chen, Suresh V Ambudkar, Maria R Baer

Open access · bronzeAbstract read
In one paragraph

Article in Molecular cancer therapeutics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
3.2field-weighted citation impact, top 7% of its field
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

55 citing papers in PubMed, 89 citations in OpenAlex.

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  12. ABCG2 in Acute Myeloid Leukemia: Old and New Perspectives.International journal of molecular sciences · 2023
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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

9 authors at 4 institutions in 1 country.

Rupashree SenUniversity of Maryland Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
Karthika Natarajan
Jasjeet Bhullar
Suneet Shukla
Hong-Bin Fang
Ling Cai
Zhe-Sheng Chen
Suresh V Ambudkar
Maria R Baer
University of Maryland, Baltimore · USSt. John's University · USNational Cancer Institute · USU-M Rogel Cancer Center

Funding

UNIVERSITY OF MARYLAND GREENEBAUM CANCER CENTERSUPPORT GRANTP30CA134274 · NCI · UNIVERSITY OF MARYLAND BALTIMORE · PI FEYRUZ VIRGILIA RASSOOL · 2008 to 2026
$51.0M
Biochemical Analysis of Multidrug Resistance-linked Transport ProteinsZIABC010030 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI AMBUDKAR, SURESH · 2009 to 2025
$21.6M
Intramural NIH HHS ZIA BC010030NCI NIH HHS P30 CA134274
6 · The paper itself

Abstract

Ponatinib is a novel tyrosine kinase inhibitor with potent activity against BCR-ABL with mutations, including T315I, and also against fms-like tyrosine kinase 3. We tested interactions between ponatinib at pharmacologically relevant concentrations of 50 to 200 nmol/L and the MDR-associated ATP-binding cassette (ABC) proteins ABCB1, ABCC1, and ABCG2. Ponatinib enhanced uptake of substrates of ABCG2 and ABCB1, but not ABCC1, in cells overexpressing these proteins, with a greater effect on ABCG2 than on ABCB1. Ponatinib potently inhibited [(125)I]-IAAP binding to ABCG2 and ABCB1, indicating binding to their drug substrate sites, with IC(50) values of 0.04 and 0.63 μmol/L, respectively. Ponatinib stimulated ABCG2 ATPase activity in a concentration-dependent manner and stimulated ABCB1 ATPase activity at low concentrations, consistent with it being a substrate of both proteins at pharmacologically relevant concentrations. The ponatinib IC(50) values of BCR-ABL-expressing K562 cells transfected with ABCB1 and ABCG2 were approximately the same as and 2-fold higher than that of K562, respectively, consistent with ponatinib being a substrate of both proteins, but inhibiting its own transport, and resistance was also attenuated to a small degree by ponatinib-induced downregulation of ABCB1 and ABCG2 cell-surface expression on resistant K562 cells. Ponatinib at pharmacologically relevant concentrations produced synergistic cytotoxicity with ABCB1 and ABCG2 substrate chemotherapy drugs and enhanced apoptosis induced by these drugs, including daunorubicin, mitoxantrone, topotecan, and flavopiridol, in cells overexpressing these transport proteins. Combinations of ponatinib and chemotherapy drugs warrant further testing.

Indexed as

Antineoplastic AgentsApoptosisATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1ATP Binding Cassette Transporter, Subfamily G, Member 2CarbocyaninesCell Cycle CheckpointsCell Line, TumorCell SurvivalChlorophyllDrug Resistance, MultipleDrug Resistance, NeoplasmDrug Synergismfms-Like Tyrosine Kinase 3Fusion Proteins, bcr-abl3,3'-diethyloxacarbocyanineABCB1 protein, humanABCG2 protein, humanAntineoplastic AgentsATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1ATP Binding Cassette Transporter, Subfamily G, Member 2CarbocyaninesChlorophyllFLT3 protein, humanfms-Like Tyrosine Kinase 3Fusion Proteins, bcr-ablImidazolesMitoxantroneNeoplasm Proteinspheophorbide aponatinibPyridazinesRhodamine 123Topotecan

Identifiers

PMID22778153
PMCPMC3683995
OpenAlexW2155383511

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.