Evidence map›Paper›PMID 20508032›Full record

ArticleThe American journal of pathology2010

Tumor-associated retinal astrocytes promote retinoblastoma cell proliferation through production of IGFBP-5.

Xiaoliang L Xu, Thomas C Lee, Nneka Offor, Christine Cheng, Aihong Liu, Yuqiang Fang, Suresh C Jhanwar, David H Abramson, David Cobrinik

Open access · bronzeAbstract read
In one paragraph

Article in The American journal of pathology, 2010. 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
1.4field-weighted citation impact, top 18% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. Retinoblastoma and Its Tumor Microenvironment.Current oncology (Toronto, Ont.) · 2026
    Review
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  12. Perfluorobutane sulfonate exposure disrupted human placental cytotrophoblast cell proliferation and invasion involving in dysregulating preeclampsia related genes.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2020
    Article
  13. Article
  14. Tumor Environment of Retinoblastoma, Intraocular Cancer.Advances in experimental medicine and biology · 2020
    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

9 authors at 3 institutions in 2 countries.

Xiaoliang L XuDyson Vision Research Institute, Weill Medical College of Cornell University, New York, New York, USA.
Thomas C Lee
Nneka Offor
Christine Cheng
Aihong Liu
Yuqiang Fang
Suresh C Jhanwar
David H Abramson
David Cobrinik
Cornell University · USMemorial Sloan Kettering Cancer Center · USChildren's Hospital of Los Angeles · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Retinoblastomas consist of cone-like neoplastic cells and diverse non-neoplastic cells whose roles in tumorigenesis have not been defined. Here, we investigated the glial cells that constitute 2% to 3% of the cells in retinoblastoma tumors, including their origin, their relationship to a potential retinoblastoma stem cell population, and their effects on tumor cell proliferation. Retinoblastoma glia consistently expressed the retinal astrocyte marker Pax2 but inconsistently expressed the Müller cell and occasional astrocyte marker CRALBP. Many of the glia expressed the stem cell-associated Sox2 but nevertheless were non-neoplastic as they coexpressed Rb and/or retained two RB1 alleles. Conversely, the glia were distinct from the non-neoplastic cells that strongly expressed the stem cell-associated ABCG2. Adherent Pax2(+),Sox2(+),Rb(+) glia readily grew from explanted retinoblastomas and produced soluble factors that enhanced the proliferation of cocultured retinoblastoma cells. This effect was emulated by normal retinal glia and appeared to be mediated by insulin-like growth factor binding protein-5 (IGFBP-5), as it was mimicked by recombinant IGFBP-5 and mitigated by neutralizing IGFBP-5 antibody. As glia-derived IGFBP-5 was earlier found to promote photoreceptor survival, our findings indicate that retinal astrocytes enhance the proliferation of cone-like retinoblastoma cells by deploying a factor that also provides trophic support to the tumor cells' non-neoplastic counterparts. These observations suggest that a tissue-specific microenvironmental feature cooperates with oncogenic mutations in a cancer cell of origin to promote retinoblastoma tumorigenesis.

Indexed as

Cell ProliferationRetinal NeoplasmsRetinoblastomaAnimalsAstrocytesBiomarkersCell LineCell SurvivalCoculture TechniquesHumansInsulin-Like Growth Factor Binding Protein 5MiceBiomarkersInsulin-Like Growth Factor Binding Protein 5

Identifiers

PMID20508032
PMCPMC2893684
OpenAlexW2168509670

What OpenQuestion holds

Textmetadata
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.