Down-regulation of ATF1 leads to early neuroectoderm differentiation of human embryonic stem cells by increasing the expression level of SOX2

Shang Chih Yang, Jan Jan Liu, Cheng Kai Wang, Yu Tsen Lin, Su Yi Tsai, Wei Ju Chen, Wei Kai Huang, Po Wen A. Tu, Yu Chen Lin, Ching Fang Chang, Chih Lun Cheng, Hsuan Lin, Chien Ying Lai, Chun Yu Lin, Yi Hsuan Lee, Yen Chun Chiu, Chiao Ching Hsu, Shu Ching Hsu, Michael Hsiao, Scott C. SchuylerFrank Leigh Lu*, Jean Lu

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

8 Scopus citations

Abstract

We reveal by high-throughput screening that activating transcription factor 1 (ATF1) is a novel pluripotent regulator in human embryonic stem cells (hESCs). The knockdown of ATF1 expression significantly up-regulated neuroectoderm (NE) genes but not mesoderm, endoderm, and trophectoderm genes. Of note, down-regulation or knockout of ATF1 with short hairpin RNA (shRNA), small interfering RNA (siRNA), or clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) was sufficient to up-regulate sex-determining region Y-box (SOX)2 and paired box 6 (PAX6) expression under the undifferentiated or differentiated conditions, whereas overexpression of ATF1 suppressed NE differentiation. Endogenous ATF1 was spontaneously down-regulated after d 1–3 of neural induction. By double-knockdown experiments, up-regulation of SOX2 was critical for the increase of PAX6 and SOX1 expression in shRNA targeting Atf1 hESCs. Using the luciferase reporter assay, we identified ATF1 as a negative transcriptional regulator of Sox2 gene expression. A novel function of ATF1 was discovered, and these findings contribute to a broader understanding of the very first steps in regulating NE differentiation in hESCs.—Yang, S.-C, Liu, J.-J., Wang, C.-K., Lin, Y.-T., Tsai, S.-Y., Chen, W.-J., Huang, W.-K., Tu, P.-W. A., Lin, Y.-C, Chang, C.-F., Cheng, C.-L., Lin, H., Lai, C.-Y., Lin, C.-Y., Lee, Y.-H., Chiu, Y.-C., Hsu, C.-C., Hsu, S.-C., Hsiao, M., Schuyler, S. C., Lu, F. L., Lu, J. Down-regulation of ATF1 leads to early neuroectoderm differentiation of human embryonic stem cells by increasing the expression level of SOX2. FASEB J. 33, 10577–10592 (2019). www.fasebj.org.

Original languageEnglish
Pages (from-to)10577-10592
Number of pages16
JournalFASEB Journal
Volume33
Issue number9
DOIs
StatePublished - 01 09 2019

Bibliographical note

Publisher Copyright:
© FASEB

Keywords

  • early development
  • gatekeeper
  • high-throughput screen

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