| Autor: |
Yousuke Katsuda, Shin-ichi Sato, Maimi Inoue, Hisashi Tsugawa, Takuto Kamura, Tomoki Kida, Rio Matsumoto, Sefan Asamitsu, Norifumi Shioda, Shuhei Shiroto, Yoshiki Oosawatsu, Kenji Yatsuzuka, Yusuke Kitamura, Masaki Hagihara, Toshihiro Ihara, Motonari Uesugi |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Nucleic acids research. 50(14) |
| ISSN: |
1362-4962 |
| Popis: |
Tandem repeats of guanine-rich sequences in RNA often form thermodynamically stable four-stranded RNA structures. Such RNA G-quadruplexes have long been considered to be linked to essential biological processes, yet their physiological significance in cells remains unclear. Here, we report a approach that permits the detection of RNA G-quadruplex structures that modulate protein translation in mammalian cells. The approach combines antibody arrays and RGB-1, a small molecule that selectively stabilizes RNA G-quadruplex structures. Analysis of the protein and mRNA products of 84 cancer-related human genes identified Nectin-4 and CapG as G-quadruplex-controlled genes whose mRNAs harbor non-canonical G-quadruplex structures on their 5′UTR region. Further investigations revealed that the RNA G-quadruplex of CapG exhibits a structural polymorphism, suggesting a possible mechanism that ensures the translation repression in a KCl concentration range of 25–100 mM. The approach described in the present study sets the stage for further discoveries of RNA G-quadruplexes. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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