Abstract:
:The Long Evans cinnamon (LEC) rat is highly susceptible to X-irradiation due to defective DNA repair and is thus a model for hepatocellular carcinogenesis. We constructed a bacterial artificial chromosome (BAC) contig of rat chromosome 4 completely covering the region associated with radiation susceptibility. We used transient and stable transfections to demonstrate that defective DNA repair in LEC cells is fully complemented by a 200-kb BAC, CHORI-230-65K18. Further analysis showed that the region associated with radiation susceptibility is located in a 128,543-bp region of 65K18 that includes the known gene Rpn1. However, neither knockdown nor overexpression of Rpn1 indicated that this gene is associated with radiation susceptibility. We also mapped three ESTs (TC523872, TC533727, and CB607546) in the 128,543-bp region, suggesting that 65K18 contains an unknown gene associated with X-ray susceptibility in the LEC rat.
journal_name
Genomicsjournal_title
Genomicsauthors
Tsuji AB,Sugyo A,Sudo H,Sagara M,Ishikawa A,Ohtsuki M,Kimura T,Ogiu T,Miyagishi M,Taira K,Imai T,Harada YNdoi
10.1016/j.ygeno.2005.09.020subject
Has Abstractpub_date
2006-02-01 00:00:00pages
236-42issue
2eissn
0888-7543issn
1089-8646pii
S0888-7543(05)00288-0journal_volume
87pub_type
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