The genomic landscape of UM-SCC oral cavity squamous cell carcinoma cell lines

Megan L. Ludwig, Aditi Kulkarni, Andrew C. Birkeland, Nicole L. Michmerhuizen, Susan K. Foltin, Jacqueline E. Mann, Rebecca C. Hoesli, Samantha N. Devenport, Brittany M. Jewell, Andrew G. Shuman, Matthew E. Spector, Thomas E. Carey, Hui Jiang, J. Chad Brenner

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Objectives: We sought to describe the genetic complexity of 14 UM-SCC oral cavity cancer cell lines that have remained uncharacterized despite being used as model systems for decades. Materials and Methods: We performed exome sequencing on 14 oral cavity UM-SCC cell lines and denote the mutational profile of each line. We used a SNP array to profile the multiple copy number variations of each cell line and use immunoblotting to compare alterations to protein expression of commonly amplified genes (EGFR, PIK3CA, etc.). RNA sequencing was performed to characterize the expression of genes with copy number alterations. Results: The cell lines displayed a highly complex network of genetic aberrations that was consistent with alterations identified in the HNSCC TCGA project including PIK3CA amplification, CDKN2A deletion, as well as TP53 and CASP8 mutations, enabling genetic stratification of each cell line in the panel. Copy number FISH and spectral karyotyping analysis demonstrate that cell lines retain chromosomal heterogeneity. Conclusions: Collectively, we developed an important resource for future oral cavity HNSCC cell line studies and highlight the complexity of genomic aberrations in cell lines.

Original languageEnglish (US)
Pages (from-to)144-151
Number of pages8
JournalOral Oncology
Volume87
DOIs
StatePublished - Dec 2018
Externally publishedYes

Keywords

  • Cell Lines
  • Exome
  • HNSCC
  • Oral cancer
  • UM-SCC

ASJC Scopus subject areas

  • Oral Surgery
  • Oncology
  • Cancer Research

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