OCT4A contributes to the stemness and multi-potency of human umbilical cord blood-derived multipotent stem cells (hUCB-MSCs)

Kwang Won Seo, Sae Rom Lee, Dilli Ram Bhandari, Kyoung Hwan Roh, Sang Bum Park, Ah Young So, Ji Won Jung, Min Soo Seo, Soo Kyung Kang, Yong Soon Lee, Kyung Sun Kang

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

The OCT4A gene, a POU homeodomain transcription factor, has been shown to be expressed in embryonic stem cells (ESC) as well as hUCB-MSCs. In this study, the roles played by OCT4A in hUCB-MSCs were determined by stably inhibiting OCT4A with lenti-viral vector-based small hairpin RNA (shRNA). A decreased rate of cell proliferation was observed in OCT4-inhibited hUCB-MSCs. Down-regulation of CCNA2 expression in OCT4-inhibited hUCB-MSCs was confirmed by RT-PCR and real-time RT-PCR analysis in three genetically independent hUCB-MSC clones. Adipogenic differentiation was also suppressed in OCT4-inhibited hUCB-MSCs. The up-regulation of DTX1 and down-regulation of HDAC1, 2, and 4 expressions may be related to this differentiation deformity. The expression of other transcription factors, including SOX2, REX1 and c-MYC, was also affected by OCT4 inhibition in hUCB-MSCs. In conclusion, these finding suggest that OCT4A performs functionally conserved roles in hUCB-MSCs, making its expression biologically important for ex vivo culture of hUCB-MSCs.

Original languageEnglish
Pages (from-to)120-125
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume384
Issue number1
DOIs
StatePublished - 19 Jun 2009

Keywords

  • Multi-potency
  • OCT4
  • shRNA
  • Stemness
  • Umbilical cord blood-derived mesenchymal stem cells

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