Expression ratio of the TGFβ-inducible gene MYO10 is prognostic for overall survival of squamous cell lung cancer patients and predicts chemotherapy response

Sci Rep. 2018 Jun 22;8(1):9517. doi: 10.1038/s41598-018-27912-1.

Abstract

In lung cancer a deregulation of Transforming Growth Factor-β (TGFβ) signaling has been observed. Yet, the impact of TGFβ in squamous cell carcinoma of the lung (LUSC) remained to be determined. We combined phenotypic and transcriptome-wide studies and showed that the stimulation of the LUSC cell line SK-MES1 with TGFβ results in an increase of migratory invasive properties. The analysis of the dynamics of gene expression by next-generation sequencing revealed that TGFβ stimulation orchestrates the upregulation of numerous motility- and actin cytoskeleton-related genes. Among these the non-muscle myosin 10 (MYO10) showed the highest upregulation in a LUSC patient cohort of the Cancer Genome Atlas (TCGA). Knockdown of MYO10 abrogated TGFβ-induced collagen gel invasion of SK-MES1 cells. The analysis of MYO10 mRNA expression in paired tissues of 151 LUSC patients with corresponding 80-month clinical follow-up data showed that the mRNA expression ratio of MYO10 in tumor and tumor-free tissue is prognostic for overall survival of LUSC patients and predictive for the response of these patients to adjuvant chemotherapy. Thus, MYO10 represents a new clinical biomarker for this aggressive disease and due to its role in cellular motility and invasion could serve as a potential molecular target for therapeutic interventions in patients with LUSC.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carcinogenesis
  • Carcinoma, Squamous Cell / diagnosis
  • Carcinoma, Squamous Cell / drug therapy
  • Carcinoma, Squamous Cell / genetics*
  • Carcinoma, Squamous Cell / pathology
  • Cell Line, Tumor
  • Gene Expression Regulation, Neoplastic*
  • Humans
  • Lung Neoplasms / diagnosis
  • Lung Neoplasms / drug therapy
  • Lung Neoplasms / genetics*
  • Lung Neoplasms / pathology
  • Myosins / genetics*
  • Neoplasm Invasiveness
  • Prognosis
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism
  • Survival Analysis
  • Transcriptional Activation / drug effects*
  • Transforming Growth Factor beta / pharmacology*

Substances

  • MYO10 protein, human
  • RNA, Messenger
  • Transforming Growth Factor beta
  • Myosins