Frontiers in Cellular Neuroscience (May 2020)

Loss of Arid1a Promotes Neuronal Survival Following Optic Nerve Injury

  • Xue-Qi Peng,
  • Xue-Qi Peng,
  • Xue-Qi Peng,
  • Shang-Kun Dai,
  • Shang-Kun Dai,
  • Shang-Kun Dai,
  • Chang-Ping Li,
  • Chang-Ping Li,
  • Chang-Ping Li,
  • Pei-Pei Liu,
  • Pei-Pei Liu,
  • Zhi-Meng Wang,
  • Zhi-Meng Wang,
  • Zhi-Meng Wang,
  • Hong-Zhen Du,
  • Hong-Zhen Du,
  • Zhao-Qian Teng,
  • Zhao-Qian Teng,
  • Zhao-Qian Teng,
  • Shu-Guang Yang,
  • Shu-Guang Yang,
  • Chang-Mei Liu,
  • Chang-Mei Liu,
  • Chang-Mei Liu

DOI
https://doi.org/10.3389/fncel.2020.00131
Journal volume & issue
Vol. 14

Abstract

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Trauma or neurodegenerative diseases trigger the retrograde death of retinal ganglion cells (RGCs), causing an irreversible functional loss. AT-rich interaction domain 1A (ARID1A), a subunit of the SWItch/Sucrose Non-Fermentable (SWI/SNF) chromatin remodeling complex, has been shown to play crucial roles in cell homeostasis and tissue regeneration. However, its function in adult RGC regeneration remains elusive. Here, we show that optic nerve injury induces dynamic changes of Arid1a expression. Importantly, deleting Arid1a in mice dramatically promotes RGC survival, but insignificantly impacts axon regeneration after optic nerve injury. Next, joint profiling of transcripts and accessible chromatin in mature RGCs reveals that Arid1a regulates several genes involved in apoptosis and JAK/STAT signaling pathway. Thus, our findings suggest modulation of Arid1a as a potential therapeutic strategy to promote RGC neuroprotection after damage.

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