Journal
ELIFE
Volume 4, Issue -, Pages -Publisher
ELIFE SCIENCES PUBLICATIONS LTD
DOI: 10.7554/eLife.08077
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Categories
Funding
- BBSRC Career Track Fellowship [BB/F024347/1]
- European Community [FP7/2009/241955]
- FAUN-Stiftung
- Foundation Fighting Blindness (FFB)
- Imhoff-Stiftung
- Stiftung Auge (Deutsche Ophthalmologische Gesellschaft)
- Deutsche Heredo-Ataxie-Gesellschaft
- Deutsche Forschungsgemeinschaft (DFG) [AB393/2-2]
- BBSRC ISPG
- BBSRC EastBio Studentship
- University Hospital of Cologne
- BBSRC [BB/L003163/1, BBS/E/D/20221657, BBS/E/R/00001614, BB/F024347/1] Funding Source: UKRI
- MRC [MC_UU_12018/26] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/L003163/1, BBS/E/D/20221657, 1513235, BBS/E/R/00001614, BB/F024347/1] Funding Source: researchfish
- Medical Research Council [MC_UU_12018/26] Funding Source: researchfish
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Joubert syndrome (JBTS) is a severe recessive neurodevelopmental ciliopathy which can affect several organ systems. Mutations in known JBTS genes account for approximately half of the cases. By homozygosity mapping and whole-exome sequencing, we identified a novel locus, JBTS23, with a homozygous splice site mutation in KIAA0586 (alias TALPID3), a known lethal ciliopathy locus in model organisms. Truncating KIAA0586 mutations were identified in two additional patients with JBTS. One mutation, c.428delG (p.Arg143Lysfs*4), is unexpectedly common in the general population and may be a major contributor to JBTS. We demonstrate KIAA0586 protein localization at the basal body in human and mouse photoreceptors, as is common for JBTS proteins, and also in pericentriolar locations. We show that loss of TALPID3 (KIAA0586) function in animal models causes abnormal tissue polarity, centrosome length and orientation, and centriolar satellites. We propose that JBTS and other ciliopathies may in part result from cell polarity defects.
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