Standardized, systemic phenotypic analysis reveals kidney dysfunction as main alteration of Kctd1 I27N mutant mice.

Abstract:

BACKGROUND:Increased levels of blood plasma urea were used as phenotypic parameter for establishing novel mouse models for kidney diseases on the genetic background of C3H inbred mice in the phenotype-driven Munich ENU mouse mutagenesis project. The phenotypically dominant mutant line HST014 was established and further analyzed. METHODS:Analysis of the causative mutation as well as the standardized, systemic phenotypic analysis of the mutant line was carried out. RESULTS:The causative mutation was detected in the potassium channel tetramerization domain containing 1 (Kctd1) gene which leads to the amino acid exchange Kctd1 I27N thereby affecting the functional BTB domain of the protein. This line is the first mouse model harboring a Kctd1 mutation. Kctd1 I27N homozygous mutant mice die perinatally. Standardized, systemic phenotypic analysis of Kctd1 I27N heterozygous mutants was carried out in the German Mouse Clinic (GMC). Systematic morphological investigation of the external physical appearance did not detect the specific alterations that are described in KCTD1 mutant human patients affected by the scalp-ear-nipple (SEN) syndrome. The main pathological phenotype of the Kctd1 I27N heterozygous mutant mice consists of kidney dysfunction and secondary effects thereof, without gross additional primary alterations in the other phenotypic parameters analyzed. Genome-wide transcriptome profiling analysis at the age of 4 months revealed about 100 differentially expressed genes (DEGs) in kidneys of Kctd1 I27N heterozygous mutants as compared to wild-type controls. CONCLUSIONS:In summary, the main alteration of the Kctd1 I27N heterozygous mutants consists in kidney dysfunction. Additional analyses in 9-21 week-old heterozygous mutants revealed only few minor effects.

journal_name

J Biomed Sci

authors

Kumar S,Rathkolb B,Sabrautzki S,Krebs S,Kemter E,Becker L,Beckers J,Bekeredjian R,Brommage R,Calzada-Wack J,Garrett L,Hölter SM,Horsch M,Klingenspor M,Klopstock T,Moreth K,Neff F,Rozman J,Fuchs H,Gailus-Durner V,H

doi

10.1186/s12929-017-0365-5

subject

Has Abstract

pub_date

2017-08-17 00:00:00

pages

57

issue

1

eissn

1021-7770

issn

1423-0127

pii

10.1186/s12929-017-0365-5

journal_volume

24

pub_type

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