Novel human alpha-fetoprotein mRNA isoform lacking exon 1 identified in ovarian yolk sac tumor.
J Soc Gynecol Investig
; 12(6): 456-62, 2005 Sep.
Article
en En
| MEDLINE
| ID: mdl-15914041
ABSTRACT
OBJECTIVE:
Alpha-fetoprotein (AFP) is a major fetal serum protein, the biologic role of which has not been not fully elucidated. Recently, existence of a novel AFP mRNA isoform (del.1 AFP mRNA isoform), which is transcribed from the intron A (the intron between exons 1 and 2), has been reported in murine yolk sac and fetal liver. In the present study, we intended to identify the human homologue of the murine AFP mRNA isoform in the yolk sac tumor.METHODS:
To investigate the existence of the mRNA isoform (which we termed the "AFP-C mRNA isoform"), reverse transcription-polymerase chain reaction (RT-PCR) was used. Moreover, the expression analysis of the AFP-C cDNA isoform using the AFP-negative human cell line was carried out.RESULTS:
RT-PCR revealed the existence of the AFP-C mRNA isoform in the yolk sac tumor and human hepatocellular carcinoma cells. The expression analysis clarified that the molecular size of the AFP-C was approximately 65 kd, and that the protein was not secreted, in contrast to the traditional AFP.CONCLUSION:
From these results, the existence of the AFP-C mRNA isoform has been demonstrated for the first time in humans. The AFP-C located in cytoplasm possibly plays physiologic/pathogenic roles distinct from those of the traditional AFP in the yolk sac tumor and hepatocellular carcinoma.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias Ováricas
/
Adenocarcinoma
/
Alfa-Fetoproteínas
/
Tumor del Seno Endodérmico
Límite:
Female
/
Humans
Idioma:
En
Revista:
J Soc Gynecol Investig
Asunto de la revista:
GINECOLOGIA
Año:
2005
Tipo del documento:
Article
País de afiliación:
Japón