Candidate exome capture identifies mutation of SDCCAG8 as the cause of a retinal-renal ciliopathy

E.A. Otto, T.W. Hurd, R. Airik, M. Chaki, W. Zhou, C. Stoetzel, S.B. Patil, S. Levy, A.K. Ghosh, C.A. Murga-Zamalloa, J. van Reeuwijk, S.J. Letteboer, L. Sang, R.H. Giles, Q. Liu, K.L. Coene, A. Estrada-Cuzcano, R.W. Collin, H.M. McLaughlin, S. HeldJ.M. Kasanuki, G. Ramaswami, J. Conte, I. Lopez, J. Washburn, J. Macdonald, J. Hu, Y. Yamashita, ER Maher, L.M. Guay-Woodford, H.P. Neumann, N. Obermuller, R.K. Koenekoop, C. Bergmann, X. Bei, R.A. Lewis, N. Katsanis, V. Lopes, D.S. Williams, R.H. Lyons, C.V. Dang, D.A. Brito, M.B. Dias, X. Zhang, J.D. Cavalcoli, G. Nurnberg, P. Nurnberg, E.A. Pierce, P.K. Jackson, C. Antignac, S. Saunier, R. Roepman, H. Dollfus, H. Khanna, F. Hildebrandt

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Nephronophthisis-related ciliopathies (NPHP-RC) are recessive disorders that feature dysplasia or degeneration occurring preferentially in the kidney, retina and cerebellum. Here we combined homozygosity mapping with candidate gene analysis by performing 'ciliopathy candidate exome capture' followed by massively parallel sequencing. We identified 12 different truncating mutations of SDCCAG8 (serologically defined colon cancer antigen 8, also known as CCCAP) in 10 families affected by NPHP-RC. We show that SDCCAG8 is localized at both centrioles and interacts directly with OFD1 (oral-facial-digital syndrome 1), which is associated with NPHP-RC. Depletion of sdccag8 causes kidney cysts and a body axis defect in zebrafish and induces cell polarity defects in three-dimensional renal cell cultures. This work identifies loss of SDCCAG8 function as a cause of a retinal-renal ciliopathy and validates exome capture analysis for broadly heterogeneous single-gene disorders.

Original languageEnglish
Pages (from-to)840-850
Number of pages11
JournalNature Genetics
Volume42
Issue number10
DOIs
Publication statusPublished - 2010

Keywords

  • Animals
  • Autoantigens
  • Blotting, Western
  • Case-Control Studies
  • Centrosome
  • Cyclic AMP
  • Exons
  • Family
  • Fluorescent Antibody Technique, Indirect
  • Gene Expression Regulation, Developmental
  • Genetic Association Studies
  • Homozygote
  • Humans
  • Kidney Diseases
  • Mice
  • Molecular Sequence Data
  • Mutation
  • Neoplasm Proteins
  • Photoreceptor Cells, Vertebrate
  • Proteins
  • RNA, Messenger
  • RNA, Small Interfering
  • Rats
  • Retinal Diseases
  • Reverse Transcriptase Polymerase Chain Reaction
  • Subcellular Fractions
  • Two-Hybrid System Techniques
  • Zebrafish

Fingerprint

Dive into the research topics of 'Candidate exome capture identifies mutation of SDCCAG8 as the cause of a retinal-renal ciliopathy'. Together they form a unique fingerprint.

Cite this