Cell line which is knock out the bmp receptor genes and a method of producing target proteins using the same

Abstract

The present invention relates to a transgenic CHO cell line in which the BMP receptor gene BMPRIA or BMPRII is knocked out. The BMP type I receptor BMPRIA or BMP type II receptor BMPRII gene which plays an important role in intracellular signal transduction in CHO cells is knocked out to prevent the activation of self concentration control pathway and the signal transduction mediated by BMP in CHO cells, so that the productivity of a target protein to be produced can be improved.