Mutations in CTC1, encoding conserved telomere maintenance component 1, cause Coats plus

Anderson, Beverley H; Kasher, Paul R; Mayer, Josephine; Szynkiewicz, Marcin; Jenkinson, Emma M; Bhaskar, Sanjeev S; Urquhart, Jill E; Daly, Sarah B; Dickerson, Jonathan E; O'Sullivan, James; Leibundgut, Elisabeth Oppliger; Muter, Joanne; Abdel-Salem, Ghada M H; Babul-Hirji, Riyana; Baxter, Peter; Berger, Andrea; Bonafé, Luisa; Brunstom-Hernandez, Janice E; Buckard, Johannes A; Chitayat, David; ... (2012). Mutations in CTC1, encoding conserved telomere maintenance component 1, cause Coats plus. Nature genetics, 44(3), pp. 338-42. New York, N.Y.: Nature America 10.1038/ng.1084

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Coats plus is a highly pleiotropic disorder particularly affecting the eye, brain, bone and gastrointestinal tract. Here, we show that Coats plus results from mutations in CTC1, encoding conserved telomere maintenance component 1, a member of the mammalian homolog of the yeast heterotrimeric CST telomeric capping complex. Consistent with the observation of shortened telomeres in an Arabidopsis CTC1 mutant and the phenotypic overlap of Coats plus with the telomeric maintenance disorders comprising dyskeratosis congenita, we observed shortened telomeres in three individuals with Coats plus and an increase in spontaneous γH2AX-positive cells in cell lines derived from two affected individuals. CTC1 is also a subunit of the α-accessory factor (AAF) complex, stimulating the activity of DNA polymerase-α primase, the only enzyme known to initiate DNA replication in eukaryotic cells. Thus, CTC1 may have a function in DNA metabolism that is necessary for but not specific to telomeric integrity.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Haematology and Central Haematological Laboratory

UniBE Contributor:

Oppliger Leibundgut, Elisabeth and Baerlocher, Gabriela M.

ISSN:

1061-4036

Publisher:

Nature America

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:28

Last Modified:

17 Mar 2015 21:12

Publisher DOI:

10.1038/ng.1084

PubMed ID:

22267198

Web of Science ID:

000300843600023

URI:

https://boris.unibe.ch/id/eprint/10372 (FactScience: 216244)

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