Estimation of tumor cell total mRNA expression in 15 cancer types predicts disease progression

Nat Biotechnol. 2022 Nov;40(11):1624-1633. doi: 10.1038/s41587-022-01342-x. Epub 2022 Jun 13.

Abstract

Single-cell RNA sequencing studies have suggested that total mRNA content correlates with tumor phenotypes. Technical and analytical challenges, however, have so far impeded at-scale pan-cancer examination of total mRNA content. Here we present a method to quantify tumor-specific total mRNA expression (TmS) from bulk sequencing data, taking into account tumor transcript proportion, purity and ploidy, which are estimated through transcriptomic/genomic deconvolution. We estimate and validate TmS in 6,590 patient tumors across 15 cancer types, identifying significant inter-tumor variability. Across cancers, high TmS is associated with increased risk of disease progression and death. TmS is influenced by cancer-specific patterns of gene alteration and intra-tumor genetic heterogeneity as well as by pan-cancer trends in metabolic dysregulation. Taken together, our results indicate that measuring cell-type-specific total mRNA expression in tumor cells predicts tumor phenotypes and clinical outcomes.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Disease Progression
  • Genetic Heterogeneity
  • Genomics
  • Humans
  • Neoplasms* / genetics
  • Neoplasms* / metabolism
  • RNA, Messenger / genetics

Substances

  • RNA, Messenger