Evidence map›Paper›PMID 26938241›Full record

ArticlePloS one2016

PI-3K Inhibitors Preferentially Target CD15+ Cancer Stem Cell Population in SHH Driven Medulloblastoma.

Alok R Singh, Shweta Joshi, Muamera Zulcic, Michael Alcaraz, Joseph R Garlich, Guillermo A Morales, Yoon J Cho, Lei Bao, Michael L Levy, Robert Newbury and 4 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

22 citing papers in PubMed, 31 citations in OpenAlex.

  1. Cancer Stem Cell Characterization in Olfactory Neuroblastoma Tissue.International forum of allergy & rhinology · 2025
    Article
  2. Review
  3. Current Strategies for Management of Medulloblastoma.Diagnostics (Basel, Switzerland) · 2023
    Review
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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

14 authors at 4 institutions in 1 country.

Alok R SinghDepartment of Pediatrics, Moores Cancer Center, UC San Diego Health System, La Jolla, CA, United States of America.
Shweta JoshiDepartment of Pediatrics, Moores Cancer Center, UC San Diego Health System, La Jolla, CA, United States of America.
Muamera ZulcicDepartment of Pediatrics, Moores Cancer Center, UC San Diego Health System, La Jolla, CA, United States of America.
Michael AlcarazDepartment of Pediatrics, Moores Cancer Center, UC San Diego Health System, La Jolla, CA, United States of America.
Joseph R GarlichSignalRx Pharmaceuticals, San Diego, CA, United States of America.
Guillermo A MoralesSignalRx Pharmaceuticals, San Diego, CA, United States of America.
Yoon J ChoDepartments of Neurology and Neurosurgery, Stanford University School of Medicine, Stanford, CA, United States of America.
Lei BaoBiostatistics Department, Moores Cancer Center, UC San Diego Health System, La Jolla, CA, United States of America.
Michael L LevyDepartment of Neurosurgery, UCSD Rady Children's Hospital, La Jolla, CA, United States of America.
Robert NewburyDepartment of Pathology, UCSD Rady Children's Hospital, La Jolla, CA, United States of America.
Denise MalickiDepartment of Pathology, UCSD Rady Children's Hospital, La Jolla, CA, United States of America.
Karen MesserBiostatistics Department, Moores Cancer Center, UC San Diego Health System, La Jolla, CA, United States of America.
John CrawfordDepartment of Neurosciences Division of Child Neurology, UCSD Rady Children's Hospital, La Jolla, CA, United States of America.
Donald L DurdenDepartment of Pediatrics, Moores Cancer Center, UC San Diego Health System, La Jolla, CA, United States of America.
UC San Diego Health System · USRady Children's Hospital-San Diego · USSignalRx Pharmaceuticals (United States) · USStanford University · US

Funding

VIRAL MALIGNANCYP30CA023100 · NCI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI DIANE M SIMEONE · 1985 to 2026
$124.9M
Vascular targeted pan PI-3 kinase inhibitor prodrug, SF1126 for glioma therapyR01CA094233 · NCI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI DURDEN, DONALD · 2002 to 2012
$2.4M
Phase 2 Study of Poly-ICLC in the Treatment of Pediatric Low Grade GliomasR01FD004385 · FDA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI DURDEN, DONALD · 2014 to 2017
$1.6M
FDA HHS R01 FD004385NCI NIH HHS P30 CA023100NCI NIH HHS R01 CA094233NCI NIH HHS R01 CA94233-09
6 · The paper itself

Abstract

Sonic hedgehog (SHH) medulloblastoma (MB) subtype is driven by a proliferative CD15+ tumor propagating cell (TPC), also considered in the literature as a putative cancer stem cell (CSC). Despite considerable research, much of the biology of this TPC remains unknown. We report evidence that phosphatase and tensin homolog (PTEN) and phosphoinositide 3-kinase (PI-3K) play a crucial role in the propagation, survival and potential response to therapy in this CD15+ CSC/TPC-driven malignant disease. Using the ND2-SmoA1 transgenic mouse model for MB, mouse genetics and patient-derived xenografts (PDXs), we demonstrate that the CD15+TPCs are 1) obligately required for SmoA1Tg-driven tumorigenicity 2) regulated by PTEN and PI-3K signaling 3) selectively sensitive to the cytotoxic effects of pan PI-3K inhibitors in vitro and in vivo but resistant to chemotherapy 4) in the SmoA1Tg mouse model are genomically similar to the SHH human MB subgroup. The results provide the first evidence that PTEN plays a role in MB TPC signaling and biology and that PI-3K inhibitors target and suppress the survival and proliferation of cells within the mouse and human CD15+ cancer stem cell compartment. In contrast, CD15+ TPCs are resistant to cisplatinum, temozolomide and the SHH inhibitor, NVP-LDE-225, agents currently used in treatment of medulloblastoma. These studies validate the therapeutic efficacy of pan PI-3K inhibitors in the treatment of CD15+ TPC dependent medulloblastoma and suggest a sequential combination of PI-3K inhibitors and chemotherapy will have augmented efficacy in the treatment of this disease.

Indexed as

Gene Expression Regulation, NeoplasticPhosphoinositide-3 Kinase InhibitorsAminopyridinesAnimalsAntineoplastic AgentsCell Line, TumorCerebellar NeoplasmsDrug Resistance, NeoplasmFucosyltransferasesHedgehog ProteinsHumansMedulloblastomaMiceMice, TransgenicMicroarray AnalysisMolecular Targeted TherapyAminopyridinesAntineoplastic AgentsFucosyltransferasesFut4 protein, mouseHedgehog ProteinsMorpholinesNADH DehydrogenaseNADH dehydrogenase subunit 2, mouseNVP-BKM120Phosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsPTEN PhosphohydrolasePten protein, mouseShh protein, mouse

Identifiers

PMID26938241
PMCPMC4777592
OpenAlexW2288950308

What OpenQuestion holds

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LicenceCC BY
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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.