Identification of an endogenous RNA transcribed from the antisense strand of the HFE gene.
Hum Mol Genet
; 10(17): 1859-66, 2001 Aug 15.
Article
em En
| MEDLINE
| ID: mdl-11532995
ABSTRACT
Hereditary haemochromatosis is an autosomal recessive disease which results in iron overload, and it is the most frequently inherited disorder in Caucasian populations. The gene involved (HFE) has recently been identified, and it encodes an MHC class I-like molecule. A 2.7 kb cDNA has been isolated, whereas the HFE gene expression is characterized by an almost ubiquitous mRNA of 4.1 kb in size. The difference between this transcript and the isolated cDNA has not yet been explained. Thus, the 5' end of the HFE gene is still undefined and very little is known about the regulation of its expression. By searching this end, we isolated an antisense transcript originating from the same gene locus. Further investigations (rapid amplification of cDNA ends, RT-PCR experiments and dbEST screening) indicated that this RNA spans exon 1, exon 2, part of intron 1 of the HFE gene and approximately 1 kb upstream of it. This HFE antisense transcript is polyadenylated but displays no open reading frame. A ribonuclease A protection assay definitively demonstrated the biological existence of the HFE antisense RNA, which appears to be expressed in all of the tissues and cell lines tested. Furthermore, in vitro coupled transcription-translation experiments revealed that the HFE expression is decreased by this antisense RNA, indicating that it may play a critical role in the regulation of the HFE gene expression.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
RNA Mensageiro
/
Antígenos de Histocompatibilidade Classe I
/
Hemocromatose
/
Antígenos HLA
/
Proteínas de Membrana
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
Idioma:
En
Revista:
Hum Mol Genet
Assunto da revista:
BIOLOGIA MOLECULAR
/
GENETICA MEDICA
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
França