BACKGROUND: Mutations in ABCA1 gene are the cause of Tangier disease (TD) and familial high density lipoprotein (HDL) deficiency. Splice site mutations of this gene were reported infrequently.METHODS: ABCA1 gene was sequenced in a TD patient and in subjects with low HDL. The effect of intronic variants on ABCA1 pre-mRNA splicing was studied in COS-1 cells expressing a mutant minigene or in patients' cells.RESULTS: A novel mutation in intron 20 (c.2961 -2 A>C) was found in the TD patient. To assess its effect, a mutant ABCA1 minigene, containing intron 18-intron 23 region, was expressed in COS-1 cells. The mutant minigene generated three transcripts: i) in the first (459bp) 61 nucleotides of intron 20 were retained; ii) in the second (384bp) exon 20 joined to exon 21 devoid of the first 14 nucleotides; and iii) in the third (255bp) the entire exon 21 was skipped. The first two transcripts were also observed in patient's peripheral blood mononuclear cells. These mRNAs encode truncated proteins. A variant in intron 8 (c.814 -14 ins A), identified in subjects with low HDL, had no effect on ABCA1 pre-mRNA splicing.CONCLUSIONS: Functional analysis is required to establish the effect of intronic mutations on ABCA1 pre-mRNA splicing.
Multiple abnormally spliced ABCA1 mRNAs caused by a novel splice site mutation of ABCA1 gene in a patient with Tangier disease / Bocchi, Letizia; Pisciotta, L; Fasano, Tommaso; Candini, Chiara; Puntoni, Mr; Sampietro, T; Bertolini, S; CALANDRA BUONAURA, Sebastiano. - In: CLINICA CHIMICA ACTA. - ISSN 0009-8981. - ELETTRONICO. - 411 (7-8)(2010), pp. 524-530.
Data di pubblicazione: | 2010 |
Titolo: | Multiple abnormally spliced ABCA1 mRNAs caused by a novel splice site mutation of ABCA1 gene in a patient with Tangier disease. |
Autore/i: | Bocchi, Letizia; Pisciotta, L; Fasano, Tommaso; Candini, Chiara; Puntoni, Mr; Sampietro, T; Bertolini, S; CALANDRA BUONAURA, Sebastiano |
Autore/i UNIMORE: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.cca.2010.01.008 |
Rivista: | |
Volume: | 411 (7-8) |
Pagina iniziale: | 524 |
Pagina finale: | 530 |
Codice identificativo ISI: | WOS:000275803000012 |
Codice identificativo Scopus: | 2-s2.0-77649184745 |
Codice identificativo Pubmed: | 20093111 |
Citazione: | Multiple abnormally spliced ABCA1 mRNAs caused by a novel splice site mutation of ABCA1 gene in a patient with Tangier disease / Bocchi, Letizia; Pisciotta, L; Fasano, Tommaso; Candini, Chiara; Puntoni, Mr; Sampietro, T; Bertolini, S; CALANDRA BUONAURA, Sebastiano. - In: CLINICA CHIMICA ACTA. - ISSN 0009-8981. - ELETTRONICO. - 411 (7-8)(2010), pp. 524-530. |
Tipologia | Articolo su rivista |
File in questo prodotto:

I documenti presenti in Iris Unimore sono rilasciati con licenza Creative Commons Attribuzione - Non commerciale - Non opere derivate 3.0 Italia, salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris