Evidence map›Paper›PMID 19491901›Full record

ArticleBritish journal of cancer2009

Fluorescent tumour imaging of type I IGF receptor in vivo: comparison of antibody-conjugated quantum dots and small-molecule fluorophore.

H Zhang, X Zeng, Q Li, M Gaillard-Kelly, C R Wagner, D Yee

Open access · hybridAbstract readComparative Study
In one paragraph

Article in British journal of cancer, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. Recent nanotheranostic approaches in cancer research.Clinical and experimental medicine · 2024
    Review
  3. Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. In vivo evaluation of IGF1R/IR PET ligand [Bioorganic & medicinal chemistry letters · 2017
    Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Review
  16. Article
  17. Polymersomes containing quantum dots for cellular imaging.International journal of nanomedicine · 2014
    Article
  18. Review
  19. Review
  20. Article
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

6 authors at 3 institutions in 4 countries.

H ZhangMasonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA.
X Zeng
Q Li
M Gaillard-Kelly
C R Wagner
D Yee
University of Minnesota · USUniversity of Minnesota Medical Center · USSanofi (France) · FR

Funding

TARGETING THE IGF SYSTEM IN BREAST CANCERR01CA074285 · NCI · UNIVERSITY OF TEXAS HLTH SCI CTR SAN ANT · PI YEE, DOUGLAS · 1998 to 2012
$4.0M
Olympus FV500 Confocal Microscope SystemS10RR016851 · NCRR · UNIVERSITY OF MINNESOTA TWIN CITIES · PI CLOHISY, DENIS R · 2002 to 2002
$246k
NCI NIH HHS R01 CA074285NCI NIH HHS R01 CA74285NCRR NIH HHS S10 RR016851PHS HHS P30 077598
6 · The paper itself

Abstract

backgroundThe type I insulin-like growth factor receptor (IGF1R) is a transmembrane tyrosine kinase involved in cancer proliferation, survival, and metastasis.

methodsIn this study, we used two different fluorescent technologies (small-molecule fluorophores and quantum dot (QD) nanoparticles) to detect receptor expression and its downregulation by antibodies in vivo.

resultsAfter conjugation with AVE-1642, a humanised anti-IGF1R monoclonal antibody, both QDs (705 nm) or Alexa 680 (small-molecule fluorophore) detected expression and downregulation of IGF1R in vitro. To examine their utility in vivo, either AVE-1642 conjugates were intravenously delivered to mice bearing xenograft tumours of mouse embryo fibroblasts expressing human IGF1R or MCF-7 human breast cancer cells. Quantum dot fluorescence was mainly localised to the reticuloendothelial system in several organs and engulfed by macrophages, with only very small amount of QDs detected in the xenograft tumours. Depletion of macrophages by clodronate liposomes did not alter the nonspecific uptake of QDs. In contrast, AVE-1642-conjugated Alexa 680 solely targeted to xenograft tumour and was able to detect IGF1R downregulation, with little nonspecific targeting to other tissues or organs in mice.

conclusionTaken together, our data suggest that small-molecule fluorophores, not QDs, are suitable to detect the expression and downregulation of IGF1R in vivo.

Indexed as

Quantum DotsAnimalsAntibodies, MonoclonalAntibody SpecificityBreast NeoplasmsCell LineCell Line, TumorChromatography, GelDown-RegulationFemaleFibroblastsFluorescent Antibody Technique, DirectFluorescent DyesHumansImmunoconjugatesMacrophagesAntibodies, MonoclonalFluorescent DyesImmunoconjugatesReceptor, IGF Type 1

Identifiers

PMID19491901
PMCPMC2713715
OpenAlexW2071771389

What OpenQuestion holds

Textmetadata
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.