Abstract:
:To identify tumor-suppressor genes on chromosome 10 in non-small cell lung cancers, we isolated 10 types of splicing variant of the HELLS/SMARCA6 gene transcripts. HELLS/SMARCA6 is a novel member of SNF2 family, which is implicated in cellular functions like chromatin remodeling. Variant 1 was an alternatively spliced isoform containing an insertion of a 44 ntd intronic sequence between exons 3 and 4, giving rise to a premature termination of translation. Expression of variant 1 was detected exclusively in lung cancer specimens (11 of 43 cases, 26%) but was not detected in corresponding normal tissues. The D10S520 marker in the proximity of the HELLS/SMARCA6 gene showed prevalent allelic loss (41%) compared to flanking markers (25-31%). These results suggest that loss of function of HELLS/SMARCA6 by allelic loss and aberrant proteins by tumor-specific exon creation may result in epigenetic deregulation, leading lung cells to malignancy or its progression.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Yano M,Ouchida M,Shigematsu H,Tanaka N,Ichimura K,Kobayashi K,Inaki Y,Toyooka S,Tsukuda K,Shimizu N,Shimizu Kdoi
10.1002/ijc.20407keywords:
subject
Has Abstractpub_date
2004-10-20 00:00:00pages
8-13issue
1eissn
0020-7136issn
1097-0215journal_volume
112pub_type
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