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| Format: | Artículo científico |
| Sprache: | en |
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Nucleic acids research
2025
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| Online-Zugang: | https://pubmed.ncbi.nlm.nih.gov/39868535/ |
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| author | Duan, Lili Li, Haicheng Ju, Aili Zhang, Zhe Niu, Junhua Zhang, Yumiao Diao, Jinghan Liu, Yongqiang Song, Ni Ma, Honggang Kataoka, Kensuke Gao, Shan Wang, Yuanyuan |
| author_facet | Duan, Lili Li, Haicheng Ju, Aili Zhang, Zhe Niu, Junhua Zhang, Yumiao Diao, Jinghan Liu, Yongqiang Song, Ni Ma, Honggang Kataoka, Kensuke Gao, Shan Wang, Yuanyuan Duan, Lili Li, Haicheng Ju, Aili Zhang, Zhe Niu, Junhua Zhang, Yumiao Diao, Jinghan Liu, Yongqiang Song, Ni Ma, Honggang Kataoka, Kensuke Gao, Shan Wang, Yuanyuan |
| collection | PubMed - marine biology |
| contents | Methyl-dependent auto-regulation of the DNA N6-adenine methyltransferase AMT1 in the unicellular eukaryote Tetrahymena thermophila. Duan, Lili Li, Haicheng Ju, Aili Zhang, Zhe Niu, Junhua Zhang, Yumiao Diao, Jinghan Liu, Yongqiang Song, Ni Ma, Honggang Kataoka, Kensuke Gao, Shan Wang, Yuanyuan Tetrahymena thermophila Site-Specific DNA-Methyltransferase (Adenine-Specific) Adenine DNA Methylation Protozoan Proteins Transcription, Genetic Transcriptional Activation Epigenesis, Genetic DNA N6-methyladenine (6mA) is a potential epigenetic mark involved in gene transcription in eukaryotes, yet the regulatory mechanism governing its methyltransferase (MTase) activity remains obscure. Here, we exploited the 6mA MTase AMT1 to elucidate its auto-regulation in the unicellular eukaryote Tetrahymena thermophila. The detailed endogenous localization of AMT1 in vegetative and sexual stages revealed a correlation between the 6mA reestablishment in the new MAC and the occurrence of zygotically expressed AMT1. Catalytically inactive AMT1 reduced 6mA level on the AMT1 gene and its expression, suggesting that AMT1 modulated its own transcription via 6mA. Furthermore, AMT1-dependent 6mA regulated the transcription of its target genes, thereby affecting cell fitness. Our findings unveil a positive feedback loop of transcriptional activation on the AMT1 gene and highlight the crucial role of AMT1-dependent 6mA in gene transcription. |
| format | Artículo científico |
| id | pubmed_39868535 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Nucleic acids research |
| record_format | pubmed |
| spellingShingle | Methyl-dependent auto-regulation of the DNA N6-adenine methyltransferase AMT1 in the unicellular eukaryote Tetrahymena thermophila. Duan, Lili Li, Haicheng Ju, Aili Zhang, Zhe Niu, Junhua Zhang, Yumiao Diao, Jinghan Liu, Yongqiang Song, Ni Ma, Honggang Kataoka, Kensuke Gao, Shan Wang, Yuanyuan Tetrahymena thermophila Site-Specific DNA-Methyltransferase (Adenine-Specific) Adenine DNA Methylation Protozoan Proteins Transcription, Genetic Transcriptional Activation Epigenesis, Genetic Methyl-dependent auto-regulation of the DNA N6-adenine methyltransferase AMT1 in the unicellular eukaryote Tetrahymena thermophila. Duan, Lili Li, Haicheng Ju, Aili Zhang, Zhe Niu, Junhua Zhang, Yumiao Diao, Jinghan Liu, Yongqiang Song, Ni Ma, Honggang Kataoka, Kensuke Gao, Shan Wang, Yuanyuan Tetrahymena thermophila Site-Specific DNA-Methyltransferase (Adenine-Specific) Adenine DNA Methylation Protozoan Proteins Transcription, Genetic Transcriptional Activation Epigenesis, Genetic DNA N6-methyladenine (6mA) is a potential epigenetic mark involved in gene transcription in eukaryotes, yet the regulatory mechanism governing its methyltransferase (MTase) activity remains obscure. Here, we exploited the 6mA MTase AMT1 to elucidate its auto-regulation in the unicellular eukaryote Tetrahymena thermophila. The detailed endogenous localization of AMT1 in vegetative and sexual stages revealed a correlation between the 6mA reestablishment in the new MAC and the occurrence of zygotically expressed AMT1. Catalytically inactive AMT1 reduced 6mA level on the AMT1 gene and its expression, suggesting that AMT1 modulated its own transcription via 6mA. Furthermore, AMT1-dependent 6mA regulated the transcription of its target genes, thereby affecting cell fitness. Our findings unveil a positive feedback loop of transcriptional activation on the AMT1 gene and highlight the crucial role of AMT1-dependent 6mA in gene transcription. |
| title | Methyl-dependent auto-regulation of the DNA N6-adenine methyltransferase AMT1 in the unicellular eukaryote Tetrahymena thermophila. |
| topic | Tetrahymena thermophila Site-Specific DNA-Methyltransferase (Adenine-Specific) Adenine DNA Methylation Protozoan Proteins Transcription, Genetic Transcriptional Activation Epigenesis, Genetic |
| url | https://pubmed.ncbi.nlm.nih.gov/39868535/ |