Predose blood gene expression profiles might identify the individuals susceptible to carbon tetrachloride-induced hepatotoxicity.
Although the extent of chemical-induced liver injury differs substantially from individual to individual, it is very hard to identify susceptible population priori to chemical exposure. We report here that the gene expression of the blood samples collected predose might identify the susceptible population without actual exposure to hepatotoxicant. The innate gene expressions in the blood samples collected at predose were compared using whole-genome microarray analysis and semiquantitative PCR with the extent of hepatotoxicity following the treatment of a model hepatotoxicant, carbon tetrachloride (CCl(4)) posteriori. The expression of 18 genes was found to innately differ in the blood of the susceptible animals from the resistant to CCl(4)-induced hepatotoxicity. Of these 18 genes, three genes, NADH dehydrogenase subunit 6 (ND6), transient receptor potential cation channel, subfamily C, member 6 (Trpc6), and tetraspanin 12 (Tspan12), were found to be different reproducibly in real-time PCR analysis with independent sets of animals. Of particular note, animals with the low expression level of ND6 and Tspan12 showed significantly higher susceptibility to CCl(4)-induced hepatotoxicity indeed. This study demonstrated that blood gene expression profiling might identify the susceptible individuals to chemical-induced hepatotoxicity without actual chemical exposure, providing a novel and important methodology for the prevention of drug-induced hepatotoxicity.
Yun
Jun-Won
JW
Amorepacific Corporation R&D Center, Giheung-gu, Yongin, Republic of Korea.
Lee
Tae-Ryong
TR
Kim
Chae-Wook
CW
Park
Young-Ho
YH
Chung
Jin-Ho
JH
Lee
Yong-Soon
YS
Kang
Kyung-Sun
KS
Lim
Kyung-Min
KM
D000818:Animals; D002251:Carbon Tetrachloride / Q000633:toxicity; D056486:Chemical and Drug Induced Liver Injury / Q000097:blood / Q000235:genetics* / Q000473:pathology; D015870:Gene Expression; D020869:Gene Expression Profiling; D005819:Genetic Markers; D020022:Genetic Predisposition to Disease; D008297:Male; D020411:Oligonucleotide Array Sequence Analysis; D012333:RNA, Messenger / Q000378:metabolism; D051381:Rats; D017207:Rats, Sprague-Dawley; D013047:Specific Pathogen-Free Organisms
D005819:Genetic Markers; D012333:RNA, Messenger; D002251:Carbon Tetrachloride