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Cited by 198

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Poly(A)-specific ribonuclease deficiency impacts telomere biology and causes dyskeratosis congenita

Open access
Tummala, Hemanth, Walne, Amanda, Collopy, Laura, Cardoso, Shirleny, de la Fuente, Josu, Lawson, Sarah, Powell, James, Cooper, Nicola, Foster, Alison, Mohammed, Shehla, Plagnol, Vincent, Vulliamy, Thomas, Dokal, Inderjeet·2015·Journal of Clinical Investigation

Abstract

Dyskeratosis congenita (DC) and related syndromes are inherited, life-threatening bone marrow (BM) failure disorders, and approximately 40% of cases are currently uncharacterized at the genetic level. Here, using whole exome sequencing (WES), we have identified biallelic mutations in the gene encoding poly(A)-specific ribonuclease (PARN) in 3 families with individuals exhibiting severe DC. PARN is an extensively characterized exonuclease with deadenylation activity that controls mRNA stability in part and therefore regulates expression of a large number of genes. The DC-associated mutations identified affect key domains within the protein, and evaluation of patient cells revealed reduced deadenylation activity. This deadenylation deficiency caused an early DNA damage response in terms of nuclear p53 regulation, cell-cycle arrest, and reduced cell viability upon UV treatment. Individuals with biallelic PARN mutations and PARN-depleted cells exhibited reduced RNA levels for several key genes that are associated with telomere biology, specifically TERC, DKC1, RTEL1, and TERF1. Moreover, PARN-deficient cells also possessed critically short telomeres. Collectively, these results identify a role for PARN in telomere maintenance and demonstrate that it is a disease-causing gene in a subset of patients with severe DC.

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Metadata

Authors
Tummala, H., Walne, A., Collopy, L., Cardoso, S., de la Fuente, J., Lawson, S., Powell, J., Cooper, N., Foster, A., Mohammed, S., Plagnol, V., Vulliamy, T., & Dokal, I.
Venue
Journal of Clinical Investigation
Published
2015-04-20
Volume
125
Issue
5
Pages
2151-2160
ISSN
0021-9738 (ISSN-L)
OpenAlex
W1998739058
Cited by
198
References
3
FWCI
16.14
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Poly(A)-specific ribonuclease deficiency impacts telomere biology and causes dyskeratosis congenita. https://app.cochat.ai/papers/10.1172/jci78963
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Tummala, H., Walne, A., Collopy, L., Cardoso, S., de la Fuente, J., Lawson, S., Powell, J., Cooper, N., Foster, A., Mohammed, S., Plagnol, V., Vulliamy, T., & Dokal, I. (2015). Poly(A)-specific ribonuclease deficiency impacts telomere biology and causes dyskeratosis congenita. Journal of Clinical Investigation. https://doi.org/10.1172/jci78963

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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