LY6/PLAUR domain containing 3 has a role in the maintenance of colorectal cancer stem-like cells

Biochem Biophys Res Commun. 2017 Apr 29;486(2):232-238. doi: 10.1016/j.bbrc.2017.02.112. Epub 2017 Feb 24.

Abstract

Colorectal carcinoma (CRC) is one of the most frequently diagnosed cancers and the leading cause of cancer-related death for both men and women. Recent studies have revealed that a small sub-population of cancer cells, termed cancer stem-like cells (CSCs)/cancer-initiating cells (CICs), are endowed with tumor-initiating ability, self-renewal ability and differentiation ability. CSCs/CICs are resistant to current therapies including chemotherapy and radiotherapy. Thus, CSCs/CICs are responsible for recurrence and metastasis, and eradication of CSCs/CICs is essential to cure cancer. In this study, we isolated CR-CSCs/CICs as sphere-cultured cells and found that a product derived from LY6/PLAUR domain containing 3 (LYPD3) is preferentially expressed in CSCs/CICs. Gene overexpression and gene knockdown experiments revealed that LYPD3 has a role in the maintenance of CR-CSCs/CICs. The findings provide a novel molecular insight into CR-CSCs/CICs.

Keywords: Cancer stem cell; Colorectal cancer; LYPD3; Sphere formation.

MeSH terms

  • Aldehyde Dehydrogenase / genetics
  • Aldehyde Dehydrogenase / metabolism
  • Aldehyde Dehydrogenase 1 Family
  • Cell Adhesion Molecules / antagonists & inhibitors
  • Cell Adhesion Molecules / genetics*
  • Cell Adhesion Molecules / metabolism
  • Cell Line, Tumor
  • Cell Proliferation
  • GPI-Linked Proteins / antagonists & inhibitors
  • GPI-Linked Proteins / genetics
  • GPI-Linked Proteins / metabolism
  • Gene Expression Regulation, Neoplastic*
  • HCT116 Cells
  • HT29 Cells
  • Humans
  • Nanog Homeobox Protein / genetics
  • Nanog Homeobox Protein / metabolism
  • Neoplastic Stem Cells / metabolism*
  • Neoplastic Stem Cells / pathology
  • Octamer Transcription Factor-3 / genetics
  • Octamer Transcription Factor-3 / metabolism
  • RNA, Small Interfering / genetics
  • RNA, Small Interfering / metabolism
  • Retinal Dehydrogenase
  • SOXB1 Transcription Factors / genetics
  • SOXB1 Transcription Factors / metabolism
  • Signal Transduction
  • Spheroids, Cellular / metabolism*
  • Spheroids, Cellular / pathology

Substances

  • Cell Adhesion Molecules
  • GPI-Linked Proteins
  • LYPD3 protein, human
  • NANOG protein, human
  • Nanog Homeobox Protein
  • Octamer Transcription Factor-3
  • POU5F1 protein, human
  • RNA, Small Interfering
  • SOX2 protein, human
  • SOXB1 Transcription Factors
  • Aldehyde Dehydrogenase 1 Family
  • Aldehyde Dehydrogenase
  • ALDH1A1 protein, human
  • Retinal Dehydrogenase