Apoptosis-related gene expression in glioblastoma (LN-18) and medulloblastoma (Daoy) cell lines

Hum Cell. 2013 Dec;26(4):137-48. doi: 10.1007/s13577-011-0029-9. Epub 2013 Sep 15.

Abstract

The expression of apoptosis genes in a commercial pre-designed low-density array from Applied Biosystems was evaluated in two human brain cancer cell models, LN-18 and Daoy (HTB-186™) in comparison to the reference human primary endothelial cells under basic conditions. Analysis of the gene expression in the cancer cell lines compared to the normal control revealed features reflecting anti-apoptotic and inflammatory characteristics of the former. There was an overall downregulation of apoptosis-stimulating genes in both cancer cell lines, along with an upregulation of certain apoptosis inhibitors. A number of genes demonstrated statistically significant changes in their expressions, including BAX (BCL2-associated X protein); the CARD4/NLR family, CARD domain containing 4; CASP10 (caspase 10, apoptosis-related cysteine peptidase); DAP1 (death-associated protein kinase 1), and BIRC5 (baculoviral IAP repeat-containing 5). Anti-apoptotic potential in both cell lines was demonstrated by changes in the Bax:Bcl-2 ratio and downregulation of the APAF1 gene in LN18 cells. There was also significant downregulation of extrinsic signals and the TNF/FADD/inflammatory cascade, and upregulation of caspase inhibitors (IAPs). These results provided a novel molecular characterization of important human cancer cell lines, which might provide a useful research tool for investigating the experimental model of the CNS cell.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Apoptosis / genetics*
  • Apoptosis Regulatory Proteins / genetics
  • Apoptotic Protease-Activating Factor 1 / genetics
  • Caspase 10 / genetics
  • Cell Line, Tumor
  • Down-Regulation / genetics*
  • Fas-Associated Death Domain Protein / genetics
  • Glioblastoma / genetics*
  • Glioblastoma / pathology*
  • Humans
  • Inhibitor of Apoptosis Proteins / genetics
  • Medulloblastoma / genetics*
  • Medulloblastoma / pathology*
  • Nod1 Signaling Adaptor Protein / genetics
  • Survivin
  • Tumor Necrosis Factor-alpha / genetics
  • Up-Regulation / genetics*
  • bcl-2-Associated X Protein / genetics

Substances

  • APAF1 protein, human
  • Apoptosis Regulatory Proteins
  • Apoptotic Protease-Activating Factor 1
  • BIRC5 protein, human
  • DAP protein, human
  • FADD protein, human
  • Fas-Associated Death Domain Protein
  • Inhibitor of Apoptosis Proteins
  • NOD1 protein, human
  • Nod1 Signaling Adaptor Protein
  • Survivin
  • Tumor Necrosis Factor-alpha
  • bcl-2-Associated X Protein
  • Caspase 10
  • CASP10 protein, human