Abstract:Background: The objective of this study was to evaluate disease stage-associated differences in receptor tyrosine kinase (RTK) signaling in A549 cells using pretreatment sera from cases of pathologically-confirmed lung adenocarcinoma or control cases derived from a lung cancer screening study. This was accomplished as a means to explore the hypothesis that circulating concentrations of decoy receptors and/or ligands, as well as disease-specific ligand degradation all regulate RTK signaling in vivo.
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