例如:"lncRNA", "apoptosis", "WRKY"

ASK1-Mediated Phosphorylation Blocks HDAC6 Ubiquitination and Degradation to Drive the Disassembly of Photoreceptor Connecting Cilia.

Dev. Cell. 2020 May 04;53(3):287-299.e5. Epub 2020 Apr 09
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摘要


Retinopathy of prematurity (ROP) is a leading cause of childhood blindness. However, the pathogenesis and molecular mechanisms underlying ROP remain elusive. Herein, using the oxygen-induced retinopathy (OIR) mouse model of ROP, we demonstrate that disassembly of photoreceptor connecting cilia is an early event in response to oxygen changes. Histone deacetylase 6 (HDAC6) is upregulated in the retina of OIR mice and accumulates in the transition zone of connecting cilia. We also show that in response to oxygen changes, apoptosis signal-regulating kinase 1 (ASK1) is activated and phosphorylates HDAC6, blocking its ubiquitination by von Hippel-Lindau and subsequent degradation by the proteasome. Moreover, depletion of HDAC6 or inhibition of the ASK1/HDAC6 axis protects mice from oxygen-change-induced pathological changes of photoreceptors. These findings reveal a critical role for ASK1/HDAC6-mediated connecting cilium disassembly in the OIR mouse model of ROP and suggest a potential value of ASK1/HDAC6-targeted agents for prevention of this disease.

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