Abstract:
:The cloning and characterization of the common fragile site (CFS) FRA6E (6q26) identified Parkin, the gene involved in the pathogenesis of many cases of juvenile, early-onset and, rarely, late-onset Parkinson's disease, as the third large gene to be localized within a large CFS. Initial analyses of Parkin indicated that in addition to playing a role in Parkinson's disease, it might also be involved in the development and/or progression of ovarian cancer. These analyses also indicated striking similarities among the large CFS-locus genes: fragile histidine triad gene (FHIT; 3p14.2), WW domain-containing oxidoreductase gene (WWOX; 16q23), and Parkin (6q26). Analyses of FHIT and WWOX in a variety of different cancer types have identified the presence of alternative transcripts with whole exon deletions. Interestingly, various whole exon duplications and deletions have been identified for Parkin in juvenile and early-onset Parkinson's patients. Therefore, we performed mutational/exon rearrangement analysis of Parkin in ovarian cancer cell lines and primary tumors. Four (66.7%) cell lines and four (18.2%) primary tumors were identified as being heterozygous for the duplication or deletion of a Parkin exon. Additionally, three of 23 (13.0%) nonovarian tumor-derived cell lines were also identified as having a duplication or deletion of one or more Parkin exons. Analysis of Parkin protein expression with antibodies revealed that most of the ovarian cancer cell lines and primary tumors had diminished or absent Parkin expression. While functional analyses have not yet been performed for Parkin, these data suggest that like FHIT and WWOX, Parkin may represent a tumor suppressor gene.
journal_name
Oncogenejournal_title
Oncogeneauthors
Denison SR,Wang F,Becker NA,Schüle B,Kock N,Phillips LA,Klein C,Smith DIdoi
10.1038/sj.onc.1207072subject
Has Abstractpub_date
2003-11-13 00:00:00pages
8370-8issue
51eissn
0950-9232issn
1476-5594pii
1207072journal_volume
22pub_type
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