Isolation of a new human fetal liver cytochrome P450 cDNA clone: evidence for expression of a limited number of forms of cytochrome P450 in human fetal livers.
From a human fetal liver cDNA library, a new cDNA clone (lambda HFL10) was isolated using an antiserum to P450 HFLa, which has been isolated from livers of human fetuses. Cytochrome P450 cDNAs, namely lambda hPA6, lamda hP2-1, and lambda hPD4 which were highly homologous to cDNA clones, pHY13, Hp1-1, and phP450j, respectively, were also isolated from the cDNA library of human adult livers. Using these cDNA clones as probes together with Lambda HFL10, Northern blot analysis was conducted to determine whether all of these cytochromes were expressed in human fetal livers. The results clearly showed that only P450 HFL10 mRNA was detected in human fetal livers. This result supports the allegation that there is a much more limited number of forms of cytochrome P450 in human fetal livers than in adult livers.
Komori
M
M
Division of Analytical Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
Nishio
K
K
Fujitani
T
T
Ohi
H
H
Kitada
M
M
Mima
S
S
Itahashi
K
K
Kamataki
T
T
D000595:Amino Acid Sequence; D001483:Base Sequence; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics* / Q000378:metabolism; D004247:DNA / Q000302:isolation & purification*; D015342:DNA Probes; D015247:Deoxyribonuclease HindIII; D015252:Deoxyribonucleases, Type II Site-Specific; D005786:Gene Expression Regulation; D006801:Humans; D008099:Liver / Q000032:analysis / Q000196:embryology*; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D013379:Substrate Specificity
D015342:DNA Probes; D004247:DNA; D003577:Cytochrome P-450 Enzyme System; D015247:Deoxyribonuclease HindIII; C024408:endodeoxyribonuclease SacI; C024388:CTGCAG-specific type II deoxyribonucleases; D015252:Deoxyribonucleases, Type II Site-Specific