Loss of l(3)mbt leads to acquisition of the ping-pong cycle in Drosophila ovarian somatic cells.

Abstract:

:In Drosophila germ cells, PIWI-interacting RNAs (piRNAs) are amplified through a PIWI slicer-dependent feed-forward loop termed the ping-pong cycle, yielding secondary piRNAs. However, the detailed mechanism remains poorly understood, largely because an ex vivo model system amenable to biochemical analyses has not been available. Here, we show that CRISPR-mediated loss of function of lethal (3) malignant brain tumor [l(3)mbt] leads to ectopic activation of the germ-specific ping-pong cycle in ovarian somatic cells. Perinuclear foci resembling nuage, the ping-pong center, appeared following l(3)mbt mutation. This activation of the ping-pong machinery in cultured cells will greatly facilitate elucidation of the mechanism underlying secondary piRNA biogenesis in Drosophila.

journal_name

Genes Dev

journal_title

Genes & development

authors

Sumiyoshi T,Sato K,Yamamoto H,Iwasaki YW,Siomi H,Siomi MC

doi

10.1101/gad.283929.116

subject

Has Abstract

pub_date

2016-07-15 00:00:00

pages

1617-22

issue

14

eissn

0890-9369

issn

1549-5477

pii

30/14/1617

journal_volume

30

pub_type

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