Killing Neuroblastoma Cells with Natural Killer Cells
Author Information
Author(s): N.K. Foreman, D.R. Rill, E. Coustan-Smith, E.C. Douglass, M.K. Brenner
Primary Institution: St Jude Children's Research Hospital
Hypothesis
Can the expression of cell adhesion molecules on neuroblastoma cells predict their susceptibility to killing by natural killer and lymphokine-activated killer cells?
Conclusion
The study found that LFA-3 is a significant predictor of neuroblastoma cell susceptibility to killing by NK and LAK cells.
Supporting Evidence
- LFA-3 expression correlated with susceptibility to NK and LAK killing.
- Blocking experiments showed that antibodies against LFA-3 and ICAM-1 reduced cytotoxicity.
- Most neuroblastoma lines expressed GD2 and NCAM, but these did not correlate with susceptibility to killing.
Takeaway
This study looked at how certain proteins on neuroblastoma cells can help predict if they can be killed by special immune cells.
Methodology
The study involved examining neuroblastoma cell lines for expression of cell adhesion molecules and their susceptibility to NK and LAK cell killing through chromium release assays.
Limitations
The study's findings may not directly apply to fresh tumor cells in patients, as the expression of ligands in vivo may differ from the cell lines studied.
Participant Demographics
Cell lines derived from children with neuroblastoma.
Statistical Information
P-Value
P=0.018 for LFA-3 as a predictor of LAK killing; P=0.026 for LFA-3 as a predictor of NK killing.
Statistical Significance
p<0.05
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