TY  - JOUR
TI  - Differential expression of the mouse and human Thy-1 gene in embryonal carcinoma cells.
AU  - Malý, P
AU  - Kralova, J
AU  - Draber, P
T2  - The International Journal of Developmental Biology
AB  - Mouse P19 embryonal carcinoma (EC) cells express on their surfaces a Thy-1 glycoprotein. The expression of Thy-1 at the mRNA and protein levels is down-regulated during differentiation induced by retinoic acid (RA). Thy-1 is also expressed in human NTERA-2 EC cells, but its expression is not down-regulated during RA-induced differentiation. As a first step towards understanding differential regulation of the mouse and human Thy-1 gene in EC cells, we have introduced genomic DNA fragments encompassing the mouse or human Thy-1 gene into NTERA-2 and P19-derived cells and analyzed surface properties of the transfectants. In the transient transfection assay, both mouse and human Thy-1 genes were expressed on cell surfaces at comparable levels. P19-derived stable transfectants exhibited great clonal variations in the expressions of the transfected Thy-1 gene products, which in part reflected copy numbers. There was no simple correlation between the expression of the transfected Thy-1 gene and two stem cell surface markers, TEC-1 and TEC-4. In the course of differentiation induced by RA several clones with a surface phenotype of EC cells exhibited a significant decrease in the expression of the transfected mouse Thy-1, whereas expression of the human Thy-1 was less efficiently down-regulated. The results suggest the presence of multiple cis- and trans-acting elements controlling expression of the mouse and human Thy-1 genes in P19 EC cells and their differentiated derivatives.
PY  - 1992
VL  - 36
IS  - 4
SP  - 567
EP  - 571
J2  - Int. J. Dev. Biol.
LA  - en
SN  - 0214-6282
SN  - 1696-3547
UR  - https://ijdb.ehu.eus/article/1363523
Y2  - 2024/12/22/16:20:24
ER  -