Projects per year
Abstract
Summary In the male mouse germ line, PIWI-interacting RNAs (piRNAs), bound by the PIWI protein MIWI2 (PIWIL4), guide DNA methylation of young active transposons through SPOCD1. However, the underlying mechanisms of SPOCD1-mediated piRNA-directed transposon methylation and whether this pathway functions to protect the human germ line remain unknown. We identified loss-of-function variants in human SPOCD1 that cause defective transposon silencing and male infertility. Through the analysis of these pathogenic alleles, we discovered that the uncharacterized protein C19ORF84 interacts with SPOCD1. DNMT3C, the DNA methyltransferase responsible for transposon methylation, associates with SPOCD1 and C19ORF84 in fetal gonocytes. Furthermore, C19ORF84 is essential for piRNA-directed DNA methylation and male mouse fertility. Finally, C19ORF84 mediates the in vivo association of SPOCD1 with the de novo methylation machinery. In summary, we have discovered a conserved role for the human piRNA pathway in transposon silencing and C19ORF84, an uncharacterized protein essential for orchestrating piRNA-directed DNA methylation.
| Original language | English |
|---|---|
| Pages (from-to) | 1021 |
| Number of pages | 27 |
| Journal | Molecular Cell |
| Volume | 84 |
| Issue number | 6 |
| Early online date | 14 Feb 2024 |
| DOIs | |
| Publication status | Published - 21 Mar 2024 |
Keywords / Materials (for Non-textual outputs)
- germline
- transposon
- DNA methylation
- piRNA
- PIWI
- DNMT3C
- human male fertility
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Dive into the research topics of 'C19ORF84 connects piRNA and DNA methylation machineries to defend the mammalian germ line'. Together they form a unique fingerprint.Projects
- 7 Finished
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Core funding for the Wellcome Centre for Cell Biology
Marston, A. (Principal Investigator)
1/12/21 → 30/11/23
Project: Research
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Epigenetic inheritance: establishment and transmission of specialised chromatin domains
Allshire, R. (Principal Investigator)
1/04/17 → 31/03/23
Project: Research
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Wellcome Centre for Cell Biology
Tollervey, D. (Principal Investigator)
1/12/16 → 1/12/21
Project: Research