Evidence map›Paper›PMID 23100099›Full record

ArticleCancer immunology, immunotherapy : CII2013

Extensive expansion of primary human gamma delta T cells generates cytotoxic effector memory cells that can be labeled with Feraheme for cellular MRI.

Gabrielle M Siegers, Emeline J Ribot, Armand Keating, Paula J Foster

Open access · greenAbstract read
In one paragraph

Article in Cancer immunology, immunotherapy : CII, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

33 citing papers in PubMed, 56 citations in OpenAlex.

  1. Harnessing Vδ1Frontiers in immunology · 2026
    Review
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  3. Review
  4. Challenges and new technologies in adoptive cell therapy.Journal of hematology & oncology · 2023
    Review
  5. Article
  6. Article
  7. Nanotechnology-Assisted Cell Tracking.Nanomaterials (Basel, Switzerland) · 2022
    Review
  8. Article
  9. In vivo imaging of nanoparticle-labeled CAR T cells.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  10. CellTrace™ Violet Flow Cytometric Assay to Assess Cell Proliferation.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  11. Article
  12. Microfluidic Synthesis of Iron Oxide Nanoparticles.Nanomaterials (Basel, Switzerland) · 2020
    Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. 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

4 authors at 2 institutions in 1 country.

Gabrielle M SiegersImaging Research Laboratories, Robarts Research Institute, Western University, London, ON, Canada. gsiegers@uwo.ca
Emeline J Ribot
Armand Keating
Paula J Foster
Western University · CAPrincess Margaret Cancer Centre · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gamma delta T cells (GDTc) comprise a small subset of cytolytic T cells shown to kill malignant cells in vitro and in vivo. We have developed a novel protocol to expand GDTc from human blood whereby GDTc were initially expanded in the presence of alpha beta T cells (ABTc) that were then depleted prior to use. We achieved clinically relevant expansions of up to 18,485-fold total GDTc, with 18,849-fold expansion of the Vδ1 GDTc subset over 21 days. ABTc depletion yielded 88.1 ± 4.2 % GDTc purity, and GDTc continued to expand after separation. Immunophenotyping revealed that expanded GDTc were mostly CD27-CD45RA- and CD27-CD45RA+ effector memory cells. GDTc cytotoxicity against PC-3M prostate cancer, U87 glioblastoma and EM-2 leukemia cells was confirmed. Both expanded Vδ1 and Vδ2 GDTc were cytotoxic to PC-3M in a T cell antigen receptor- and CD18-dependent manner. We are the first to label GDTc with ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles for cellular MRI. Using protamine sulfate and magnetofection, we achieved up to 40 % labeling with clinically approved Feraheme (Ferumoxytol), as determined by enumeration of Perls' Prussian blue-stained cytospins. Electron microscopy at 2,800× magnification verified the presence of internalized clusters of iron oxide; however, high iron uptake correlated negatively with cell viability. We found improved USPIO uptake later in culture. MRI of GDTc in agarose phantoms was performed at 3 Tesla. The signal-to-noise ratios for unlabeled and labeled cells were 56 and 21, respectively. Thus, Feraheme-labeled GDTc could be readily detected in vitro via MRI.

Indexed as

Immunologic MemoryCell Line, TumorCell SeparationFerric CompoundsFerrosoferric OxideHumansImmunophenotypingLymphocyte SubsetsMagnetic Resonance ImagingNanoparticlesReceptors, Antigen, T-Cell, gamma-deltaStaining and LabelingT-Lymphocytes, CytotoxicFerric Compoundsferric oxideFerrosoferric OxideReceptors, Antigen, T-Cell, gamma-delta

Identifiers

PMID23100099
PMCPMC11029191
OpenAlexW2134157043

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.