The kinetochore protein, CENPF, is mutated in human ciliopathy and microcephaly phenotypes.

Waters AM, Asfahani R, Carroll P, Bicknell L, Lescai F, Bright A, Chanudet E, Brooks A, Christou-Savina S, Osman G, Walsh P, Bacchelli C, Chapgier A, Vernay B, Bader DM, Deshpande C, O' Sullivan M, Ocaka L, Stanescu H, Stewart HS, Hildebrandt F, Otto E, Johnson CA, Szymanska K, Katsanis N, Davis E, Kleta R, Hubank M, Doxsey S, Jackson A, Stupka E, Winey M, Beales PL
J Med Genet. 2015 52 (3): 147-56

PMID: 25564561 · PMCID: PMC4345935 · DOI:10.1136/jmedgenet-2014-102691

BACKGROUND - Mutations in microtubule-regulating genes are associated with disorders of neuronal migration and microcephaly. Regulation of centriole length has been shown to underlie the pathogenesis of certain ciliopathy phenotypes. Using a next-generation sequencing approach, we identified mutations in a novel centriolar disease gene in a kindred with an embryonic lethal ciliopathy phenotype and in a patient with primary microcephaly.

METHODS AND RESULTS - Whole exome sequencing data from a non-consanguineous Caucasian kindred exhibiting mid-gestation lethality and ciliopathic malformations revealed two novel non-synonymous variants in CENPF, a microtubule-regulating gene. All four affected fetuses showed segregation for two mutated alleles [IVS5-2A>C, predicted to abolish the consensus splice-acceptor site from exon 6; c.1744G>T, p.E582X]. In a second unrelated patient exhibiting microcephaly, we identified two CENPF mutations [c.1744G>T, p.E582X; c.8692 C>T, p.R2898X] by whole exome sequencing. We found that CENP-F colocalised with Ninein at the subdistal appendages of the mother centriole in mouse inner medullary collecting duct cells. Intraflagellar transport protein-88 (IFT-88) colocalised with CENP-F along the ciliary axonemes of renal epithelial cells in age-matched control human fetuses but did not in truncated cilia of mutant CENPF kidneys. Pairwise co-immunoprecipitation assays of mitotic and serum-starved HEKT293 cells confirmed that IFT88 precipitates with endogenous CENP-F.

CONCLUSIONS - Our data identify CENPF as a new centriolar disease gene implicated in severe human ciliopathy and microcephaly related phenotypes. CENP-F has a novel putative function in ciliogenesis and cortical neurogenesis.

Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

MeSH Terms (20)

Animals Centrioles Chromosomal Proteins, Non-Histone Cilia Exome Female Fetus Genetics, Medical HEK293 Cells High-Throughput Nucleotide Sequencing Humans Male Mice Microcephaly Microfilament Proteins Mutation NIH 3T3 Cells Pedigree Pregnancy Zebrafish

Connections (2)

This publication is referenced by other Labnodes entities:

Links