Vesicular-Bound HLA-G as a Predictive Marker for Disease Progression in Epithelial Ovarian Cancer
AbstractExtracellular vesicles (EV) and their tumor-supporting cargos provide a promising translational potential in liquid biopsies for risk assessment of epithelial ovarian cancer (EOC) patients frequently relapsing, despite initial complete therapy responses. As the immune checkpoint molecule HLA-G, which is operative in immune-escape, can be released by EV, we evaluate the abundance of EV and its vesicular-bound amount of HLA-G (HLA-GEV) as a biomarker in EOC. After enrichment of EV from plasma samples, we determined the EV particle number and amount of HLA-GEV by nanoparticle tracking analysis or ELISA. The association of results with the clinical status/outcome revealed that both, EV particle number and HLA-GEV were significantly elevated in EOC patients, compared to healthy females. However, elevated levels of HLA-GEV, but not EV numbers, were exclusively associated with a disadvantageous clinical status/outcome, including residual tumor, presence of circulating tumor cells, and disease progression. High HLA-GEV status was an independent predictor of progression, besides residual tumor burden and platinum-sensitivity. Especially among patients without residual tumor burden or with platinum-sensitivity, HLA-GEV identified patients with high risk of progression. Thus, this study highlights HLA-GEV as a potential novel biomarker for risk assessment of EOC patients with a rather beneficial prognosis defined by platinum-sensitivity or lack of residual tumor burden. View Full-Text
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Schwich, E.; Rebmann, V.; Horn, P.A.; Celik, A.A.; Bade-Döding, C.; Kimmig, R.; Kasimir-Bauer, S.; Buderath, P. Vesicular-Bound HLA-G as a Predictive Marker for Disease Progression in Epithelial Ovarian Cancer. Cancers 2019, 11, 1106.
Schwich E, Rebmann V, Horn PA, Celik AA, Bade-Döding C, Kimmig R, Kasimir-Bauer S, Buderath P. Vesicular-Bound HLA-G as a Predictive Marker for Disease Progression in Epithelial Ovarian Cancer. Cancers. 2019; 11(8):1106.Chicago/Turabian Style
Schwich, Esther; Rebmann, Vera; Horn, Peter A.; Celik, Alexander A.; Bade-Döding, Christina; Kimmig, Rainer; Kasimir-Bauer, Sabine; Buderath, Paul. 2019. "Vesicular-Bound HLA-G as a Predictive Marker for Disease Progression in Epithelial Ovarian Cancer." Cancers 11, no. 8: 1106.
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