The Repertoire of Serous Ovarian Cancer Non-genetic Heterogeneity Revealed by Single-Cell Sequencing of Normal Fallopian Tube Epithelial Cells

Published on Feb 10, 2020in Cancer Cell26.602
· DOI :10.1016/J.CCELL.2020.01.003
Zhiyuan Hu4
Estimated H-index: 4
(University of Oxford),
Mara Artibani7
Estimated H-index: 7
(University of Oxford)
+ 24 AuthorsAhmed Ashour Ahmed28
Estimated H-index: 28
(University of Oxford)
Sources
Abstract
Summary The inter-differentiation between cell states promotes cancer cell survival under stress and fosters non-genetic heterogeneity (NGH). NGH is, therefore, a surrogate of tumor resilience but its quantification is confounded by genetic heterogeneity. Here we show that NGH in serous ovarian cancer (SOC) can be accurately measured when informed by the molecular signatures of the normal fallopian tube epithelium (FTE) cells, the cells of origin of SOC. Surveying the transcriptomes of ∼6,000 FTE cells, predominantly from non-ovarian cancer patients, identified 6 FTE subtypes. We used subtype signatures to deconvolute SOC expression data and found substantial intra-tumor NGH. Importantly, NGH-based stratification of ∼1,700 tumors robustly correlated with survival. Our findings lay the foundation for accurate prognostic and therapeutic stratification of SOC.
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