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| Content Provider | PubMed Central |
|---|---|
| Author | Caira, F. Clémencet, M. C. Cherkaoui-malki, M. Dieuaide-noubhani, M. Pacot, C. Veldhoven, P. P. Van Latruffe, N. |
| Abstract | After our previous report on the cloning of two cDNA species in guinea pig, both encoding the same hepatic 79 kDa multifunctional protein 1 (MFP-1) [Caira, Cherkaoui-Malki, Hoefler and Latruffe (1996) FEBS Lett. 378, 57-60], here we report the cloning of a cDNA encoding a second multifunctional peroxisomal protein (MFP-2) in guinea-pig liver. This 2356 nt cDNA encodes a protein of 735 residues (79.7 kDa) whose sequence shows 83% identity with rat MFP-2 [Dieuaide-Noubhani, Novikov, Baumgart, Vanhooren, Fransen, Goethals, Vandekerckhove, Van Veldhoven and Mannaerts (1996) Eur. J. Biochem. 240, 660-666]. In parallel, we studied the effect of ciprofibrate, a hypolipaemic agent also known as peroxisome proliferator in rodent, on the expression of MFP-1 and MFP-2 (2.6 kb) in rats and guinea pigs. By Northern blotting analysis we demonstrated that three MFP-1-related mRNA species are expressed in the guinea-pig liver. The expression of two of them (3.5 and 2.6 kb) is slightly increased by ciprofibrate, whereas the 3.0 kb MFP-1 mRNA is, unlike the rat one, strongly down-regulated in guinea pigs treated with ciprofibrate. In a similar way, the hepatic expression of the guinea-pig 2.6 kb MFP-2 mRNA is also down-regulated in guinea pigs treated with ciprofibrate. These results demonstrate (1) that in contrast with the unique 3.0 kb MFP-1 rat mRNA, at least three hepatic MFP-1-related mRNA species are co-expressed in guinea pig; and (2) that, opposed to the accepted idea of non-responsiveness of the guinea pig to ciprofibrate, this drug affects MFP-1 and MFP-2 gene expression in this species. Also, the mRNA species for acyl-CoA oxidase and thiolase, two other enzymes of the peroxisomal beta-oxidation pathway that are induced severalfold in responsive species are down-regulated in guinea pig. This paper is the first, to our knowledge, reporting the down-regulation of the expression of genes encoding enzymes involved in the peroxisomal beta-oxidation of fatty acids (MFP-1) and bile acid synthesis (MFP-2) in mammals. |
| Starting Page | 1361 |
| File Format | |
| ISSN | 14708728 |
| e-ISSN | 14708728 |
| Journal | Biochemical Journal |
| Issue Number | Pt 3 |
| Volume Number | 330 |
| Language | English |
| Publisher Date | 1998-03-15 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Molecular Biology Biochemistry |
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