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TranscriptomicsMIWI catalysis is required for piRNA amplification-independent LINE1 transposon silencing
This SuperSeries is composed of the following subset Series: GSE32180: MIWI catalysis is required for piRNA amplification-independent LINE1 transposon silencing [microarray] GSE32184: MIWI catalysis is required for piRNA amplification-independent LINE1 transposon silencing [deep sequencing] Refer to...
ORGANISM(S): Mus musculus 
2011-11-30 | E-GEOD-32183 | biostudies-arrayexpress
TranscriptomicsA role for Fkbp6 and the chaperone machinery in piRNA amplification and transposon silencing
Epigenetic silencing of transposons by Piwi-interacting RNAs (piRNAs) constitutes an RNA-based genome defense mechanism. Piwi endonuclease action amplifies the piRNA pool by generating new piRNAs from target transcripts by a poorly understood mechanism. Here, we identified mouse Fkbp6 as a factor in...
ORGANISM(S): Bombyx mori 
2012-09-04 | E-GEOD-39203 | biostudies-arrayexpress
TranscriptomicsLoss of the Mili-interacting Tdrd1 activates transposons and alters Mili-associated small RNA profile
Piwi proteins and their associated Piwi-interacting RNAs (piRNAs) are implicated in transposon silencing in the murine germline. There is currently little information on additional proteins in the murine Piwi complex and how they might regulate the entry of transcripts that accumulate as piRNAs in t...
ORGANISM(S): Mus musculus 
2009-05-24 | E-GEOD-16023 | biostudies-arrayexpress
GenomicsImpact of nuclear Piwi elimination on chromatin state in Drosophila melanogaster ovaries
The piRNA-interacting Piwi protein is involved in transcriptional silencing of transposable elements in ovaries of D. melanogaster. Here we characterized the genome-wide effect of nuclear Piwi elimination on the presence of the heterochromatic H3K9me3 mark and HP1a, as well as on the transcription-a...
ORGANISM(S): Drosophila melanogaster 
2014-05-19 | E-GEOD-56347 | biostudies-arrayexpress
TranscriptomicsThe TDRD9-MIWI2 complex is essential for piRNA-mediated retrotransposon silencing in the mouse male germline
We identify small RNA partners of Mili from 14 dpp testes of Tdrd9-/- and Tdrd9+/- mice. Two technical replicates of the same library are indicated as replicate 1 and 2. Examination of differences in Mili-associated RNAs in 14 dpp testes of Tdrd9-/- and Tdrd9+/- mice
ORGANISM(S): Mus musculus 
2010-01-06 | E-GEOD-18825 | biostudies-arrayexpress
TranscriptomicsMIWI catalysis is required for piRNA amplification-independent LINE1 transposon silencing [microarray]
Here we show that MIWI is a small RNA-guided ribonuclease (Slicer) that requires extensive complementarity for target cleavage in vitro. Disruption of its catalytic activity in mice by a single point mutation results in male infertility and displays increased accumulation of LINE1 transposon transcr...
ORGANISM(S): Mus musculus 
2011-11-30 | E-GEOD-32180 | biostudies-arrayexpress
TranscriptomicsMIWI catalysis is required for piRNA amplification-independent LINE1 transposon silencing [deep sequencing]
Here we show that MIWI is a small RNA-guided ribonuclease (Slicer) that requires extensive complementarity for target cleavage in vitro. Disruption of its catalytic activity in mice by a single point mutation results in male infertility and displays increased accumulation of LINE1 transposon transcr...
ORGANISM(S): Mus musculus 
2011-11-30 | E-GEOD-32184 | biostudies-arrayexpress
TranscriptomicsMouse MOV10L1 associates with Piwi proteins and is an essential component of the piRNA pathway
Piwi-interacting RNAs (piRNAs) are essential for silencing of transposable elements in the germline but their biogenesis is poorly understood. Here we demonstrate that MOV10L1, a germ cell-specific putative RNA helicase, is associated with Piwi proteins. Genetic disruption of the MOV10L1 RNA helicas...
ORGANISM(S): Mus musculus 
2010-06-12 | E-GEOD-21763 | biostudies-arrayexpress
TranscriptomicsTudor domain containing 12 (TDRD12) is essential for secondary piRNA biogenesis in mice
Piwi-interacting RNAs (piRNAs) are gonad-specific small RNAs that provide defence against transposable genetic elements called transposons. Our knowledge of piRNA biogenesis is sketchy, partly due to an incomplete inventory of the factors involved. Here, we identify Tudor domain-containing 12 (TDRD1...
ORGANISM(S): Mus musculus 
2013-11-04 | E-GEOD-50544 | biostudies-arrayexpress
TranscriptomicsRNA clamping by Vasa assembles a piRNA Amplifier complex on transposon transcripts
Germline-specific Piwi-interacting RNAs (piRNAs) protect the genome against selfish genetic elements and are essential for fertility in animals. piRNAs targeting active transposons are amplified by a feed-forward loop known as the Ping-pong cycle, which links endonucleolytic slicing of target RNA...
ORGANISM(S): Bombyx mori 
2014-06-04 | E-GEOD-57420 | biostudies-arrayexpress
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