Evidence map›Paper›PMID 22248732›Full record

ReviewBiochemical pharmacology2012

Role of breast cancer resistance protein (BCRP/ABCG2) in cancer drug resistance.

Karthika Natarajan, Yi Xie, Maria R Baer, Douglas D Ross

Open access · greenAbstract readReview
In one paragraph

Review in Biochemical pharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 179 papers.

0numbers the graph read from it
0cells of the map it votes in
179citing papers in PubMed
21.3field-weighted citation impact, top 1% 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

179 citing papers in PubMed, 398 citations in OpenAlex.

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  10. Molecular chameleons adaptability in target binding.Structural dynamics (Melville, N.Y.) · 2025
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119 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 1 country.

Karthika NatarajanUniversity of Maryland Greenebaum Cancer Center, Baltimore, MD 21201, USA.
Yi Xie
Maria R Baer
Douglas D Ross
University of Maryland, Baltimore · 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
Broad Spectrum MDR Modulation in AMLR21CA098457 · NCI · ROSWELL PARK CANCER INSTITUTE CORP · PI BAER, MARIA R · 2003 to 2004
$284k
MECHANISMS OF DRUG RESISTANCE IN ACUTE MYELOID LEUKEMIAR01CA052178 · NCI · UNIVERSITY OF MARYLAND BALTIMORE · PI ROSS, DOUGLAS DONALD · 1990 to 1997
–
NCI NIH HHS P30 CA134274NCI NIH HHS R01 CA052178NCI NIH HHS R21 CA098457
6 · The paper itself

Abstract

Since cloning of the ATP-binding cassette (ABC) family member breast cancer resistance protein (BCRP/ABCG2) and its characterization as a multidrug resistance efflux transporter in 1998, BCRP has been the subject of more than two thousand scholarly articles. In normal tissues, BCRP functions as a defense mechanism against toxins and xenobiotics, with expression in the gut, bile canaliculi, placenta, blood-testis and blood-brain barriers facilitating excretion and limiting absorption of potentially toxic substrate molecules, including many cancer chemotherapeutic drugs. BCRP also plays a key role in heme and folate homeostasis, which may help normal cells survive under conditions of hypoxia. BCRP expression appears to be a characteristic of certain normal tissue stem cells termed "side population cells," which are identified on flow cytometric analysis by their ability to exclude Hoechst 33342, a BCRP substrate fluorescent dye. Hence, BCRP expression may contribute to the natural resistance and longevity of these normal stem cells. Malignant tissues can exploit the properties of BCRP to survive hypoxia and to evade exposure to chemotherapeutic drugs. Evidence is mounting that many cancers display subpopulations of stem cells that are responsible for tumor self-renewal. Such stem cells frequently manifest the "side population" phenotype characterized by expression of BCRP and other ABC transporters. Along with other factors, these transporters may contribute to the inherent resistance of these neoplasms and their failure to be cured.

Indexed as

Drug Resistance, NeoplasmAntineoplastic AgentsATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily G, Member 2Blood-Brain BarrierCell HypoxiaDrug Resistance, MultipleFemaleHumansNeoplasm ProteinsNeoplasmsABCG2 protein, humanAntineoplastic AgentsATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily G, Member 2Neoplasm Proteins

Identifiers

PMID22248732
PMCPMC3307098
OpenAlexW1991953785

What OpenQuestion holds

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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.