ArticleProceedings of the National Academy of Sciences of the United States of America2023
The HP1α protein is mandatory to repress the circadian clock and its output genes during the 12 h period of transcriptional repression.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed, 4 citations in OpenAlex.
- Night-shift work is associated with peripheral clock gene dysregulation and circadian transcriptional network remodeling in female healthcare workers.Frontiers in endocrinology · 2026Article
- The circadian demethylation of a unique intronic deoxymethylCpG-rich island boosts the transcription of its cognate circadian clock output gene.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
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Authors and funding
3 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The transcriptional repressions driven by the circadian core clock repressors RevErbα, E4BP4, and CRY1/PER1 involve feedback loops which are mandatory for generating the circadian rhythms. These repressors are known to bind to cognate DNA binding sites, but how their circadian bindings trigger the cascade of events leading to these repressions remain to be elucidated. Through molecular and genetic analyses, we now demonstrate that the chromatin protein HP1α plays a key role in these transcriptional repressions of both the circadian clock (CC) genes and their cognate output genes (CCGs). We show that these CC repressors recruit the HP1α protein downstream from a repressive cascade, and that this recruitment is mandatory for the maintenance of both the CC integrity and the expression of the circadian genes. We further show that the presence of HP1α is critical for both the repressor-induced chromatin compaction and the generation of "transcriptionally repressed biomolecular hydrophobic condensates" and demonstrates that HP1α is mandatory within the CC output genes for both the recruitment of DNA methylating enzymes on the intronic deoxyCpG islands and their subsequent methylation.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.