Cited by 148RNA Research and SplicingTelomeres, Telomerase, and SenescenceNuclear Structure and Function

Human Telomerase RNA Processing and Quality Control

Open access
Tseng, Chi-Kang, Wang, Hui-Fang, Burns, Allison M., Schroeder, Morgan R., Gaspari, Martina, Baumann, Peter·2015·Cell Reports

Abstract

The non-coding RNA subunit of telomerase provides the template for telomerase activity. In diverse fungi, 3' end processing of telomerase RNA involves a single cleavage by the spliceosome. Here, we examine how human telomerase RNA (hTR) primary transcripts are processed into the mature form of precisely 451 nt. We find that the splicing inhibitor isoginkgetin mimics the effects of RNA exosome inhibition and causes accumulation of long hTR transcripts. Depletion of exosome components and accessory factors reveals functions for the cap binding complex (CBC) and the nuclear exosome targeting (NEXT) complex in hTR turnover. Whereas longer transcripts are predominantly degraded, shorter precursor RNAs are oligo-adenylated by TRF4-2 and either processed by poly(A)-specific ribonuclease (PARN) or degraded by the exosome. Our results reveal that hTR biogenesis involves a kinetic competition between RNA processing and degradation and suggest treatment options for telomerase insufficiency disorders.

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Crossref · 10.1016/j.celrep.2015.10.075

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Authors
Tseng, C.-K., Wang, H.-F., Burns, A. M., Schroeder, M. R., Gaspari, M., & Baumann, P.
Affiliations
Stowers Institute for Medical Research (US)
Corresponding author
Baumann, Peter
Venue
Cell Reports
Publisher
Elsevier BV
Published
2015-12
Volume
13
Issue
10
Pages
2232-2243
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2178007530
Cited by
148
References
63
Citations by year
2026: 8 · 2025: 7 · 2024: 14 · 2023: 11 · 2022: 18 · 2021: 12 · 2020: 21 · 2019: 18 · 2018: 16 · 2017: 11 · 2016: 11 · 2015: 1
FWCI
5.64
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Howard Hughes Medical Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
Keywords
hTR, RNA processing, RNA quality control, RNA exosome, isoginkgetin, splicing, cap-binding complex, PARN, RNA degradation, non-coding RNA
MeSH terms
HeLa Cells, Humans, RNA, RNA Processing, Post-Transcriptional, Blotting, Northern, Polymerase Chain Reaction, Spliceosomes, Telomerase, High-Throughput Nucleotide Sequencing

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