Evidence map›Paper›PMID 21915300›Full record

ArticlePloS one2011

CD44v6 regulates growth of brain tumor stem cells partially through the AKT-mediated pathway.

Mayumi Jijiwa, Habibe Demir, Snehalata Gupta, Crystal Leung, Kaushal Joshi, Nicholas Orozco, Tiffany Huang, Vedat O Yildiz, Ichiyo Shibahara, Jason A de Jesus and 5 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 2 pooled it
7.0field-weighted citation impact, top 2% 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

74 citing papers in PubMed, 2 syntheses or guidelines pooled it, 136 citations in OpenAlex.

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14 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

15 authors at 3 institutions in 1 country.

Mayumi JijiwaDepartment of Neurological Surgery, The Ohio State University, Columbus, Ohio, United States of America.
Habibe Demir
Snehalata Gupta
Crystal Leung
Kaushal Joshi
Nicholas Orozco
Tiffany Huang
Vedat O Yildiz
Ichiyo Shibahara
Jason A de Jesus
William H Yong
Paul S Mischel
Soledad Fernandez
Harley I Kornblum
Ichiro Nakano
University of California, Los Angeles · USThe Ohio State University · USNeurological Surgery · US

Funding

University of Iowa Clinical and Translational Science Program (TL1)UL1RR025755 · NCRR · OHIO STATE UNIVERSITY · PI JACKSON, REBECCA D · 2008 to 2011
$26.3M
Neural Progenitor Genes and Brain TumorsR01NS052563 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KORNBLUM, HARLEY IAN · 2006 to 2015
$2.4M
Characterization of CD44 in brain tumor stem cellsR21CA135013 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NAKANO, ICHIRO · 2009 to 2010
$371k
Neural Progenitor Genes and Brain TumorsR56NS052563 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KORNBLUM, HARLEY IAN · 2010 to 2010
$231k
NCI NIH HHS 1R21CA135013-01A1NCI NIH HHS R21 CA135013NCRR NIH HHS UL1 RR025755NINDS NIH HHS NS052563NINDS NIH HHS R01 NS052563NINDS NIH HHS R56 NS052563
6 · The paper itself

Abstract

Identification of stem cell-like brain tumor cells (brain tumor stem-like cells; BTSC) has gained substantial attention by scientists and physicians. However, the mechanism of tumor initiation and proliferation is still poorly understood. CD44 is a cell surface protein linked to tumorigenesis in various cancers. In particular, one of its variant isoforms, CD44v6, is associated with several cancer types. To date its expression and function in BTSC is yet to be identified. Here, we demonstrate the presence and function of the variant form 6 of CD44 (CD44v6) in BTSC of a subset of glioblastoma multiforme (GBM). Patients with CD44(high) GBM exhibited significantly poorer prognoses. Among various variant forms, CD44v6 was the only isoform that was detected in BTSC and its knockdown inhibited in vitro growth of BTSC from CD44(high) GBM but not from CD44(low) GBM. In contrast, this siRNA-mediated growth inhibition was not apparent in the matched GBM sample that does not possess stem-like properties. Stimulation with a CD44v6 ligand, osteopontin (OPN), increased expression of phosphorylated AKT in CD44(high) GBM, but not in CD44(low) GBM. Lastly, in a mouse spontaneous intracranial tumor model, CD44v6 was abundantly expressed by tumor precursors, in contrast to no detectable CD44v6 expression in normal neural precursors. Furthermore, overexpression of mouse CD44v6 or OPN, but not its dominant negative form, resulted in enhanced growth of the mouse tumor stem-like cells in vitro. Collectively, these data indicate that a subset of GBM expresses high CD44 in BTSC, and its growth may depend on CD44v6/AKT pathway.

Indexed as

AnimalsBlotting, WesternFlow CytometryHumansHyaluronan ReceptorsImmunohistochemistryMiceMice, Inbred NODMice, SCIDNeoplastic Stem CellsOsteopontinProto-Oncogene Proteins c-aktReal-Time Polymerase Chain ReactionRNA, Small InterferingSignal TransductionTissue Array AnalysisHyaluronan ReceptorsOsteopontinProto-Oncogene Proteins c-aktRNA, Small Interfering

Identifiers

PMID21915300
PMCPMC3167830
OpenAlexW2070816104

What OpenQuestion holds

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LicenceCC BY
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.