Conditional deletion of Stat3 promotes neurogenesis and inhibits astrogliogenesis in neural stem cells

Fang Cao, Ryuji Hata, Pengxiang Zhu, Koh ichi Nakashiro, Masahiro Sakanaka

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Although signal transducer and activator of transcription 3 (Stat3) plays crucial roles in the determination of neural stem cell (NSC) fate, Stat3 has multiple roles in NSC function. Moreover, Stat3 plays important roles in neuronal survival and tumorigenesis. To investigate the overall effects of Stat3 on NSC fate, NSC were isolated from Stat3flox/flox mouse embryos (E14-15d), in which both Stat3 alleles are flanked by LoxP sites. Isolated NSC was inoculated with an adenovirus vector expressing Cre recombinase (Ad.nCre) or a control adenovirus vector expressing β-galactosidase (Ad.nLz). Three days later, quantitative real-time PCR (qPCR) analysis revealed that treatment with Ad.nCre eliminated stat3 mRNA expression in NSC. Promoter assay confirmed that overexpression of nCre inhibited transactivation of acute responsive element (APRE) and blocked Stat3 function in NSC. Moreover, Western blot analysis and immunocytochemical analysis revealed that elimination of Stat3 in NSC promoted neurogenesis and inhibited astrogliogenesis. In addition, we investigated the effects of Stat3 elimination in NSC on the mRNA expression of Notch family members and bHLH factors. Consequently, qPCR analysis showed that elimination of Stat3 in NSC promoted neurogenesis and inhibited astrogliogenesis through down-regulation of notch1, notch2 and hes5, but not hes1 mRNA expression.

Original languageEnglish
Pages (from-to)843-847
Number of pages5
JournalBiochemical and Biophysical Research Communications
Volume394
Issue number3
DOIs
Publication statusPublished - 09-04-2010

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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