PIWI-interacting RNAs: from generation to transgenerational epigenetics

M.J. Luteijn, R.F. Ketting

Research output: Contribution to journal/periodicalArticleScientificpeer-review


Small-RNA-guided gene regulation is a recurring theme in biology. Animal germ cells are characterized by an intriguing small-RNA-mediated gene-silencing mechanism known as the PIWI pathway. For a long time, both the biogenesis of PIWI-interacting RNAs (piRNAs) as well as their mode of gene silencing has remained elusive. A recent body of work is shedding more light on both aspects and implicates PIWI in the establishment of transgenerational epigenetic states. In fact, the epigenetic states imposed by PIWI on targets may actually drive piRNA production itself. These findings start to couple small RNA biogenesis with small-RNA-mediated epigenetics.
Original languageEnglish
Pages (from-to)523-534
JournalNature Reviews Genetics
Issue number8
Publication statusPublished - 2013


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