Journal
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volume 280, Issue 4, Pages 1148-1154Publisher
ACADEMIC PRESS INC
DOI: 10.1006/bbrc.2001.4250
Keywords
differential display; cisplatin; drug-resistance; cisplatin resistance related gene9 (CRR9); apoptosis
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In the screening for cisplatin (CDDP)-resistance related genes by a mRNA differential display method, we detected some increased bands in CDDP resistant ovarian tumor cell line 2008/C13*5.25. One of them, named DD9, was a positive fragment on Northern blot analysis. We cloned it as a fall length cDNA by 5'RACE and found a novel gene, CRR9 (Cisplatin Resistance Related gene 9). The CRR9 gene was transcribed into a 2.0 kb mRNA, encoding 512 amino acids. The putative protein had transmembrane-like domains and well conserved on C terminus with human CLPTM1 and the homologs found in Drosophila and C. elegans. Transfection assay showed that the CDDP-sensitive strain 2008 with CRR9 was more sensitive to CDDP, indicating that CRR9 was not associated with the CDDP-resistance, but the CDDP-induced apoptosis. (C) 2001 Academic Press.
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