Functional characterization of NIPBL physiological splice variants and eight splicing mutations in patients with cornelia de lange syndrome

Teresa-Rodrigo, M. ; Eckhold, J. ; Puisac, B. (Universidad de Zaragoza) ; Dalski, A. ; Gil-Rodríguez, M.C. ; Braunholz, D. ; Baquero, C. ; Hernández-Marcos, M. (Universidad de Zaragoza) ; de Karam, J.C. ; Ciero, M. ; Santos-Simarro, F. ; Lapunzina, P. ; Wierzba, J. ; Casale, C.H. ; Ramos, F.J. (Universidad de Zaragoza) ; Gillessen-Kaesbach, G. ; Kaiser, F.J. ; Pié, J. (Universidad de Zaragoza)

Resumen: Cornelia de Lange syndrome (CdLS) is a congenital developmental disorder characterized by distinctive craniofacial features, growth retardation, cognitive impairment, limb defects, hirsutism, and multisystem involvement. Mutations in five genes encoding structural components (SMC1A, SMC3, RAD21) or functionally associated factors (NIPBL, HDAC8) of the cohesin complex have been found in patients with CdLS. In about 60% of the patients, mutations in NIPBL could be identified. Interestingly, 17% of them are predicted to change normal splicing, however, detailed molecular investigations are often missing. Here, we report the first systematic study of the physiological splicing of the NIPBL gene, that would reveal the identification of four new splicing isoforms ¿E10, ¿E12, ¿E33,34, and B’. Furthermore, we have investigated nine mutations affecting splice-sites in the NIPBL gene identified in twelve CdLS patients. All mutations have been examined on the DNA and RNA level, as well as by in silico analyses. Although patients with mutations affecting NIPBL splicing show a broad clinical variability, the more severe phenotypes seem to be associated with aberrant transcripts resulting in a shift of the reading frame.

Idioma: Inglés

DOI: 10.3390/ijms150610350

Año: 2014

Publicado en: International Journal of Molecular Sciences 15, 6 (2014), 10350-10364
ISSN: 1661-6596

Factor impacto JCR: 2.862 (2014)

Categ. JCR: BIOCHEMISTRY & MOLECULAR BIOLOGY rank: 134 / 290 = 0.462 (2014) - Q2 - T2
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 45 / 154 = 0.292 (2014) - Q2 - T1

Financiación: info:eu-repo/grantAgreement/ES/DGA/B20
Financiación: info:eu-repo/grantAgreement/ES/FIS/PI12-01318
Financiación: info:eu-repo/grantAgreement/ES/UZ/UZ2011-BIO-02

Tipo y forma: Article (Published version)

Área (Departamento): Área Fisiología (Dpto. Farmacología y Fisiolog.)
Área (Departamento): Proy. investigación DUA (Dpto. Farmacología y Fisiolog.)
Área (Departamento): Área Pediatría (Dpto. Pediatría Radiol.Med.Fís)