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Abstract
Sleep disturbance is a prevalent yet poorly understood comorbidity in autism spectrum disorders (ASD). Here, we uncover a bidirectional regulatory axis connecting the ASD risk gene POGZ to core circadian mechanisms. We demonstrate that Pogz is widely expressed in the suprachiasmatic nucleus (SCN), the central pacemaker of the circadian rhythms, and exhibits circadian oscillations in both the hypothalamus and liver, with its transcription directly regulated by the circadian molecule DBP through a D-box element in its proximal enhancer. Pogz-deficient mice exhibited prolonged circadian periodicity, impaired light-induced phase shift, delayed adaption to an 8-hour advance jet-lag, and reduced SCN c-Fos activation in response to light pulses. Mechanistically, POGZ interacts with and enhances the transcription activity of CREB, a key regulator of light-induced phase resetting. Notably, Pogz deletion leads to ASD-related deficits in social novelty and cognition, with cognitive impairments influenced by both photoperiod and behavioral paradigm. Our findings, thus, reveal a critical, previously unrecognized intersection between an ASD risk gene and circadian clock, offering insights into the pathogenesis of core ASD symptoms and comorbid sleep disturbances.
Authors
Ting Wu, Jiao He, Chu-Jun Xu, Chi-Yu Li, Pingchuan Zhang, Yanfeng Wang, Shanshan Zhu, Lusi Zhang, Jingtan Zhu, Jing Zhang, Jia-Da Li, Huadie Liu
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| Usage | JCI | PMC |
|---|---|---|
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