Abstract:
:Integrator is an RNA polymerase II (RNAPII)-associated complex that was recently identified to have a broad role in both RNA processing and transcription regulation. Importantly, its role in human development and disease is so far largely unexplored. Here, we provide evidence that biallelic Integrator Complex Subunit 1 (INTS1) and Subunit 8 (INTS8) gene mutations are associated with rare recessive human neurodevelopmental syndromes. Three unrelated individuals of Dutch ancestry showed the same homozygous truncating INTS1 mutation. Three siblings harboured compound heterozygous INTS8 mutations. Shared features by these six individuals are severe neurodevelopmental delay and a distinctive appearance. The INTS8 family in addition presented with neuronal migration defects (periventricular nodular heterotopia). We show that the first INTS8 mutation, a nine base-pair deletion, leads to a protein that disrupts INT complex stability, while the second missense mutation introduces an alternative splice site leading to an unstable messenger. Cells from patients with INTS8 mutations show increased levels of unprocessed UsnRNA, compatible with the INT function in the 3'-end maturation of UsnRNA, and display significant disruptions in gene expression and RNA processing. Finally, the introduction of the INTS8 deletion mutation in P19 cells using genome editing alters gene expression throughout the course of retinoic acid-induced neural differentiation. Altogether, our results confirm the essential role of Integrator to transcriptome integrity and point to the requirement of the Integrator complex in human brain development.
journal_name
PLoS Genetjournal_title
PLoS geneticsauthors
Oegema R,Baillat D,Schot R,van Unen LM,Brooks A,Kia SK,Hoogeboom AJM,Xia Z,Li W,Cesaroni M,Lequin MH,van Slegtenhorst M,Dobyns WB,de Coo IFM,Verheijen FW,Kremer A,van der Spek PJ,Heijsman D,Wagner EJ,Fornerod M,Madoi
10.1371/journal.pgen.1006809subject
Has Abstractpub_date
2017-05-25 00:00:00pages
e1006809issue
5eissn
1553-7390issn
1553-7404pii
PGENETICS-D-16-01999journal_volume
13pub_type
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