Valentin A. Poltorachenko

The paper identifies chromaffin-neuroblast plasticity as a mechanism linking paraganglioma and neuroblastoma through shared developmental states and hybrid cell populations.

The paper shows that Piwi and piRNAs repress transcription of defective rRNA genes with truncated retrotransposon insertions in Drosophila ovaries, preventing aberrant rRNA accumulation.

The paper investigates how Udd protein and heterochromatin regulate rRNA gene transcription in Drosophila germline, showing Udd's role in distinguishing active from silent rDNA units.