|
|
|
|
|
Oozeer, R.; Furet, J.P.; Goupil-Feuillerat, N.; Anba, J.; Mengaud, J.; Corthier, G.. |
In a previous study using fusion of the deregulated lactose promoter lacTp* and reporter genes, we suggested that Lactobacillus casei could initiate de novo protein synthesis during intestinal transit. In order to confirm this finding and extend it to other promoters, we adopted a reverse transcriptase quantitative PCR (RT-QPCR) approach combined with a transcriptional fusion system consisting of luciferase genes under the control of four promoters (ccpA, dlt, ldh, and lacT*) from L. casei DN-114 001. Promoter expression was monitored during cell growth, and variable luciferase activities were detected. In 3-day cultures, all the genetically modified strains survived but without exhibiting luciferase activity. Luciferase mRNA levels determined by RT-QPCR... |
Tipo: Journal Article |
Palavras-chave: HUMAN; MOUSE; GENE EXPRESSION; INTESTINAL MICROBIOTA; FECES; RT-QPCR; PROBIOTIC; GASTROINTESTINAL TRACT. |
Ano: 2005 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008ec5c541b&uri=/notices/prodinra1/2008/06/ |
| |
|
| |
|
| |
|
|
Descamps, S.; Arzouk, H.; Bacou, F.; Bernardi, H.; Fedon, Y.; Gay, S.; Reyne, Y.; Rossano, B.; Levin, J.. |
Secreted Frizzled-related proteins (Sfrps) areextracellular regulators of Wnt signalling and play importantroles in developmental and oncogenic processes. They areknown to be upregulated in regenerating muscle and inmyoblast cultures but their function is unknown. Here, weshow that the addition of recombinant Sfrp1 or Sfrp2 toC2C12 cell line cultures or to primary cultures of satellitecells results in the inhibition of myotube formation with nosignificant effect on the cell cycle or apoptosis. Even thoughat confluence, treated and untreated cultures are identical inappearance, analyses have shown that, for maximum effect,the cells have to be treated while they are proliferating.Furthermore, removal of Sfrp from the culture mediumduring differentiation... |
Tipo: Journal Article |
Palavras-chave: Sfrp1; Sfrp2; MYOBLAST; PROLIFERATION; DIFFERENTIATION; CELL CULTURE; MOUSE; RABBIT. |
Ano: 2008 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008942fdfb7&uri=/notices/prodinra1/2009/09/ |
| |
|
|
|