Emergence of a High-Plasticity Cell State during Lung Cancer Evolution

Cancer Cell. 2020 Aug 10;38(2):229-246.e13. doi: 10.1016/j.ccell.2020.06.012. Epub 2020 Jul 23.

Abstract

Tumor evolution from a single cell into a malignant, heterogeneous tissue remains poorly understood. Here, we profile single-cell transcriptomes of genetically engineered mouse lung tumors at seven stages, from pre-neoplastic hyperplasia to adenocarcinoma. The diversity of transcriptional states increases over time and is reproducible across tumors and mice. Cancer cells progressively adopt alternate lineage identities, computationally predicted to be mediated through a common transitional, high-plasticity cell state (HPCS). Accordingly, HPCS cells prospectively isolated from mouse tumors and human patient-derived xenografts display high capacity for differentiation and proliferation. The HPCS program is associated with poor survival across human cancers and demonstrates chemoresistance in mice. Our study reveals a central principle underpinning intra-tumoral heterogeneity and motivates therapeutic targeting of the HPCS.

Keywords: cell state transition; chromatin state; differentiation; drug resistance; lung cancer; plasticity; single-cell transcriptomics; tumor evolution; tumor heterogeneity; tumor progression.

Publication types

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

MeSH terms

  • Animals
  • Cell Differentiation / genetics
  • Cell Line, Tumor
  • Cell Plasticity / genetics*
  • Cell Proliferation / genetics
  • Cells, Cultured
  • Disease Models, Animal
  • Epithelial Cells / cytology
  • Epithelial Cells / metabolism*
  • Epithelial-Mesenchymal Transition / genetics*
  • Genetic Heterogeneity
  • Humans
  • Lung Neoplasms / genetics*
  • Lung Neoplasms / pathology
  • Mice
  • Neoplastic Stem Cells / metabolism*
  • Single-Cell Analysis / methods
  • Transcriptome / genetics