論文 - 詳細
| RRC ID | 80796 |
|---|---|
| 著者 | Nahar S, Morales Moya LJ, Brunner J, Hendriks GJ, Towbin B, Hauser YP, Brancati G, Gaidatzis D, Großhans H. |
| タイトル | Dynamics of miRNA accumulation during C. elegans larval development. |
| ジャーナル | Nucleic Acids Res |
| Abstract |
Temporally and spatially controlled accumulation underlies the functions of microRNAs (miRNAs) in various developmental processes. In Caenorhabditis elegans, this is exemplified by the temporal patterning miRNAs lin-4 and let-7, but for most miRNAs, developmental expression patterns remain poorly resolved. Indeed, experimentally observed long half-lives may constrain possible dynamics. Here, we profile miRNA expression throughout C. elegans postembryonic development at high temporal resolution, which identifies dynamically expressed miRNAs. We use mathematical models to explore the underlying mechanisms. For let-7, we can explain, and experimentally confirm, a striking stepwise accumulation pattern through a combination of rhythmic transcription and stage-specific regulation of precursor processing by the RNA-binding protein LIN-28. By contrast, the dynamics of several other miRNAs cannot be explained by regulation of production rates alone. Specifically, we show that a combination of oscillatory transcription and rhythmic decay drive rhythmic accumulation of miR-235, orthologous to miR-92 in other animals. We demonstrate that decay of miR-235 and additional miRNAs depends on EBAX-1, previously implicated in target-directed miRNA degradation (TDMD). Taken together, our results provide insight into dynamic miRNA decay and establish a resource to studying both the developmental functions of, and the regulatory mechanisms acting on, miRNAs. |
| 巻・号 | 52(9) |
| ページ | 5336-5355 |
| 公開日 | 2024-5-22 |
| DOI | 10.1093/nar/gkae115 |
| PII | 7612103 |
| PMID | 38381904 |
| PMC | PMC11109986 |
| MeSH | Animals Caenorhabditis elegans* / genetics Caenorhabditis elegans* / growth & development Caenorhabditis elegans* / metabolism Caenorhabditis elegans Proteins* / genetics Caenorhabditis elegans Proteins* / metabolism Gene Expression Regulation, Developmental* Larva / genetics Larva / growth & development Larva / metabolism MicroRNAs* / genetics MicroRNAs* / metabolism RNA Stability / genetics Repressor Proteins Transcription Factors / genetics Transcription Factors / metabolism |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 18 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 線虫 | tm2321 |