Notch signaling and ghost cell fate in the calcifying cystic odontogenic tumor

C. H. Siar, Toshiyuki Kawakami, R. R. Buery, K. Nakano, M. Tomida, H. Tsujigiwa, P. P. Han, H. Nagatsuka, K. H. Ng

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Notch signaling is an evolutionarily conserved mechanism that enables adjacent cells to adopt different fates. Ghost cells (GCs) are anucleate cells with homogeneous pale eosinophilic cytoplasm and very pale to clear central areas (previous nucleus sites). Although GCs are present in a variety of odontogenic lesions notably the calcifying cystic odontogenic tumor (CCOT), their nature and process of formation remains elusive. The aim of this study was to investigate the role of Notch signaling in the cell fate specification of GCs in CCOT. Immunohistochemical staining for four Notch receptors (Notch1, Notch2, Notch3 and Notch4) and three ligands (Jagged1, Jagged2 and Delta1) was performed on archival tissues of five CCOT cases. Level of positivity was quantified as negative (0), mild (+), moderate (2+) and strong (3+). Results revealed that GCs demonstrated overexpression for Notch1 and Jagged1 suggesting that Notch1-Jagged1 signaling might serve as the main transduction mechanism in cell fate decision for GCs in CCOT. Protein localizations were largely membranous and/or cytoplasmic. Mineralized GCs also stained positive implicating that the calcification process might be associated with upregulation of these molecules. The other Notch receptors and ligands were weak to absent in GCs and tumoral epithelium. Stromal endothelium and fibroblasts were stained variably positive.

Original languageEnglish
Pages (from-to)501-506
Number of pages6
JournalEuropean journal of medical research
Volume16
Issue number11
Publication statusPublished - Nov 10 2011

Keywords

  • Calcifying cystic odontogenic tumor (CCOT)
  • Delta
  • Ghost cells
  • Jagged
  • Notch

ASJC Scopus subject areas

  • Medicine(all)

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  • Cite this

    Siar, C. H., Kawakami, T., Buery, R. R., Nakano, K., Tomida, M., Tsujigiwa, H., Han, P. P., Nagatsuka, H., & Ng, K. H. (2011). Notch signaling and ghost cell fate in the calcifying cystic odontogenic tumor. European journal of medical research, 16(11), 501-506.