The τCstF-64 Polyadenylation Protein Controls Genome Expression in Testis

Wencheng Li, Hsiang Jui Yeh, Ganesh S. Shankarling, Zhe Ji, Bin Tian, Clinton C. MacDonald

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23 Scopus citations


The τCstF-64 polyadenylation protein (gene symbol Cstf2t) is a testis-expressed orthologue of CstF-64. Mice in which Cstf2t was knocked out had a phenotype that was only detected in meiotic and postmeiotic male germ cells, giving us the opportunity to examine CstF-64 function in an isolated developmental system. We performed massively parallel clonally amplified sequencing of cDNAs from testes of wild type and Cstf2t-/- mice. These results revealed that loss of τCstF-64 resulted in large-scale changes in patterns of genome expression. We determined that there was a significant overrepresentation of RNAs from introns and intergenic regions in testes of Cstf2t-/- mice, and a concomitant use of more distal polyadenylation sites. We observed this effect particularly in intronless small genes, many of which are expressed retroposons that likely co-evolved with τCstF-64. Finally, we observed overexpression of long interspersed nuclear element (LINE) sequences in Cstf2t-/- testes. These results suggest that τCstF-64 plays a role in 3′ end determination and transcription termination for a large range of germ cell-expressed genes.

Original languageEnglish (US)
Article numbere48373
JournalPloS one
Issue number10
StatePublished - Oct 26 2012

ASJC Scopus subject areas

  • General


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