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. 2025 Jun 2;39(11-12):751-769.
doi: 10.1101/gad.352166.124.

The USP11/TCEAL1 complex promotes transcription elongation to sustain oncogenic gene expression in neuroblastoma

Markus Dehmer #  1   2 , Katrin Trunk #  1 , Peter Gallant  1 , Daniel Fleischhauer  1 , Mareike Müller  1   2 , Steffi Herold  1 , Giacomo Cossa  1 , Francesca Conte  3 , Jan Koster  4 , Florian Sauer  5 , Christina Schülein-Völk  6 , Carsten P Ade  1 , Raphael Vidal  1   7 , Caroline Kisker  5 , Rogier Versteeg  8 , Petra Beli  3   9 , Seychelle M Vos  10   11 , Martin Eilers  12   7 , Gabriele Büchel  12   2   7
Affiliations

The USP11/TCEAL1 complex promotes transcription elongation to sustain oncogenic gene expression in neuroblastoma

Markus Dehmer et al. Genes Dev. .

Abstract

During early transcription, RNA polymerase II (RNAPII) undergoes a series of structural transitions controlled by cyclin-dependent kinases. How protein ubiquitylation and proteasomal degradation control the function of RNAPII is less well understood. Here we show that the deubiquitinating enzyme USP11 forms a complex with TCEAL1, a member of the TFIIS (TCEA)-like protein family. TCEAL1 shares sequence homology with the RNAPII interaction domain of the elongation factor TFIIS (which controls the fate of backtracked RNAPII) and competes with TFIIS for binding to core promoters. USP11 protects TCEAL1 from proteasomal degradation, and TCEAL1 recruits USP11 to RNAPII. Both USP11 and TCEAL1 promote transcription elongation and maintain expression of RPB8, an essential subunit of all three nuclear RNA polymerases. In neuroblastoma, USP11- and TCEAL1-dependent genes define a gene expression program that is characteristic for mesenchymal tumors, which are described as able to escape from many treatments, suggesting that the USP11/TCEAL1 complex promotes transcription elongation to support a critical oncogenic gene expression program.

Keywords: MYCN; RNA polymerase II; TCEAL1; TFIIS; USP11; transcription elongation.

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