Genome-wide profiling of transcription factor activity in primary liver cancer using single-cell ATAC sequencing

Cell Rep. 2023 Nov 28;42(11):113446. doi: 10.1016/j.celrep.2023.113446. Epub 2023 Nov 18.

Abstract

Primary liver cancer (PLC) consists of two main histological subtypes; hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (iCCA). The role of transcription factors (TFs) in malignant hepatobiliary lineage commitment between HCC and iCCA remains underexplored. Here, we present genome-wide profiling of transcription regulatory elements of 16 PLC patients using single-cell assay for transposase accessible chromatin sequencing. Single-cell open chromatin profiles reflect the compositional diversity of liver cancer, identifying both malignant and microenvironment component cells. TF motif enrichment levels of 31 TFs strongly discriminate HCC from iCCA tumors. These TFs are members of the nuclear/retinoid receptor, POU, or ETS motif families. POU factors are associated with prognostic features in iCCA. Overall, nuclear receptors, ETS and POU TF motif families delineate transcription regulation between HCC and iCCA tumors, which may be relevant to development and selection of PLC subtype-specific therapeutics.

Keywords: CP: Cancer; ETS; POU; hepatocellular carcinoma; intrahepatic cholangiocarcinoma; nuclear receptors; primary liver cancer; retinoid receptors; scATAC-seq; transcription factor.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, N.I.H., Intramural

MeSH terms

  • Bile Duct Neoplasms* / pathology
  • Bile Ducts, Intrahepatic / pathology
  • Carcinoma, Hepatocellular* / genetics
  • Carcinoma, Hepatocellular* / pathology
  • Cholangiocarcinoma* / genetics
  • Cholangiocarcinoma* / pathology
  • Chromatin
  • Humans
  • Liver Neoplasms* / genetics
  • Liver Neoplasms* / pathology
  • Transcription Factors / genetics
  • Tumor Microenvironment

Substances

  • Transcription Factors
  • Chromatin