Regulation of the expression of mitogen-regulated protein (MRP; proliferin) and cathepsin L in cultured cells and in the murine placenta

• Published in: Molecular and cellular endocrinology Vol. 77; no. 1; pp. 115 - 122
• Main Authors: Nilsen-Hamilton, Marit, Jang, Yng-Ju, Delgado, Michael, Shim, Jae-Kyoung, Bruns, Kerry, Chiang, Chia-Ping, Fang, Yu, Parfett, Craig L.J., Denhardt, David T., Hamilton, Richard T.
• Format: Journal Article
• Language: English
• Published: Shannon Elsevier Ireland Ltd 01.05.1991; Elsevier
• Subjects: 3T3 Cells; Animals; Biological and medical sciences; Cathepsin L; Cathepsins - genetics; Cathepsins - metabolism; Cells, Cultured; Cysteine Endopeptidases; Embryology: invertebrates and vertebrates. Teratology; Endopeptidases; Epidermal Growth Factor - pharmacology; Fibroblast Growth Factors - pharmacology; Fundamental and applied biological sciences. Psychology; Gene Expression Regulation; General aspects. Development. Fetal membranes; Gestation; Gestational Age; Glycoproteins - genetics; Glycoproteins - metabolism; Growth factor; Growth Substances - genetics; Growth Substances - metabolism; Humans; Immunoenzyme Techniques; Intercellular Signaling Peptides and Proteins; Mice; Mitogen-regulated protein; Placenta - metabolism; Placenta, murine; Placentation; Proliferin; RNA, Messenger - metabolism; Tetradecanoylphorbol Acetate - pharmacology; Transforming Growth Factor alpha - pharmacology; Cathepsin L; SSC; SDS; Proliferin; FGF; EGF; PMA; CL; IGF; MRP; Gestation; PLF; Mitogen-regulated protein; CS; BSA; Placenta, murine; TGF; SSPE; PDGF; FCS; MEP; Growth factor; Immunohistochemistry; Cell culture; Fibroblast growth factor; Enzyme; Fetal membrane; Rodentia; Glycoproteins; Gene expression; Gestational age; Vertebrata; Mammalia; Epidermal growth factor; Cell line; Placenta; Messenger RNA; Mouse; Hormonal regulation; Comparative study
• ISSN: 0303-7207; 1872-8057
• DOI: 10.1016/0303-7207(91)90065-Z

The genes encoding mitogen-regulated protein (MRP; also called proliferin; PLF) and procathepsin L (CL; also called major excreted protein; MEP) are expressed to high levels in the mouse placenta. Although they are both regulated by epidermal growth factor (EGF) and fibroblast growth factor (FGF) in 3T3 cells, expression of these genes is differently regulated with growth state. The expression patterns of MRP and CL as a function of murine development are also different. Basal and growth factor-stimulated levels of MRP expression are much higher in growing than in quiescent 3T3 cells, whereas CL levels are similar. These changes in gene expression in cultured quiescent cells parallel the changes in MRP and CL expression observed in the late-gestational quiescent placenta. These results suggest growth factors may regulate the expression of these genes, but other influences also regulate the expression of MRP and CL in vivo.