A mutation in the SUV39H2 gene in Labrador Retrievers with hereditary nasal parakeratosis (HNPK) provides insights into the epigenetics of keratinocyte differentiation.


Autoria(s): Jagannathan, Vidhya; Bannoehr, Jeanette; Plattet, Philippe; Hauswirth, Regula; Drögemüller, Cord; Drögemüller, Michaela; Wiener, Dominique Judith; Doherr, Marcus; Owczarek-Lipska, Marta; Galichet, Arnaud; Welle, Monika Maria; Tengvall, Katarina; Bergvall, Kerstin; Lohi, Hannes; Rüfenacht, Silvia; Linek, Monika; Paradis, Manon; Müller, Eliane Jasmine; Roosje, Petra; Leeb, Tosso
Data(s)

2013

Resumo

Hereditary nasal parakeratosis (HNPK), an inherited monogenic autosomal recessive skin disorder, leads to crusts and fissures on the nasal planum of Labrador Retrievers. We performed a genome-wide association study (GWAS) using 13 HNPK cases and 23 controls. We obtained a single strong association signal on chromosome 2 (p(raw) = 4.4×10⁻¹⁴). The analysis of shared haplotypes among the 13 cases defined a critical interval of 1.6 Mb with 25 predicted genes. We re-sequenced the genome of one case at 38× coverage and detected 3 non-synonymous variants in the critical interval with respect to the reference genome assembly. We genotyped these variants in larger cohorts of dogs and only one was perfectly associated with the HNPK phenotype in a cohort of more than 500 dogs. This candidate causative variant is a missense variant in the SUV39H2 gene encoding a histone 3 lysine 9 (H3K9) methyltransferase, which mediates chromatin silencing. The variant c.972T>G is predicted to change an evolutionary conserved asparagine into a lysine in the catalytically active domain of the enzyme (p.N324K). We further studied the histopathological alterations in the epidermis in vivo. Our data suggest that the HNPK phenotype is not caused by hyperproliferation, but rather delayed terminal differentiation of keratinocytes. Thus, our data provide evidence that SUV39H2 is involved in the epigenetic regulation of keratinocyte differentiation ensuring proper stratification and tight sealing of the mammalian epidermis.

Formato

application/pdf

Identificador

http://boris.unibe.ch/43860/1/journal.pgen.1003848.pdf

Jagannathan, Vidhya; Bannoehr, Jeanette; Plattet, Philippe; Hauswirth, Regula; Drögemüller, Cord; Drögemüller, Michaela; Wiener, Dominique Judith; Doherr, Marcus; Owczarek-Lipska, Marta; Galichet, Arnaud; Welle, Monika Maria; Tengvall, Katarina; Bergvall, Kerstin; Lohi, Hannes; Rüfenacht, Silvia; Linek, Monika; Paradis, Manon; Müller, Eliane Jasmine; Roosje, Petra and Leeb, Tosso (2013). A mutation in the SUV39H2 gene in Labrador Retrievers with hereditary nasal parakeratosis (HNPK) provides insights into the epigenetics of keratinocyte differentiation. PLoS genetics, 9(10), e1003848. Public Library of Science 10.1371/journal.pgen.1003848 <http://dx.doi.org/10.1371/journal.pgen.1003848>

doi:10.7892/boris.43860

info:doi:10.1371/journal.pgen.1003848

info:pmid:24098150

urn:issn:1553-7390

Idioma(s)

eng

Publicador

Public Library of Science

Relação

http://boris.unibe.ch/43860/

Direitos

info:eu-repo/semantics/openAccess

Fonte

Jagannathan, Vidhya; Bannoehr, Jeanette; Plattet, Philippe; Hauswirth, Regula; Drögemüller, Cord; Drögemüller, Michaela; Wiener, Dominique Judith; Doherr, Marcus; Owczarek-Lipska, Marta; Galichet, Arnaud; Welle, Monika Maria; Tengvall, Katarina; Bergvall, Kerstin; Lohi, Hannes; Rüfenacht, Silvia; Linek, Monika; Paradis, Manon; Müller, Eliane Jasmine; Roosje, Petra and Leeb, Tosso (2013). A mutation in the SUV39H2 gene in Labrador Retrievers with hereditary nasal parakeratosis (HNPK) provides insights into the epigenetics of keratinocyte differentiation. PLoS genetics, 9(10), e1003848. Public Library of Science 10.1371/journal.pgen.1003848 <http://dx.doi.org/10.1371/journal.pgen.1003848>

Palavras-Chave #590 Animals (Zoology) #630 Agriculture
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

PeerReviewed