| abstract |
Methods for screening or selecting cells expressing a polypeptide of interest, e.g. for selecting cells expressing a desired level of a polypeptidé of interest, for evaluating recombinant polypeptide expression in a population of cells, or for selecting cells expressing a polypeptide with a desired binding affinity to a ligand, as well as for producing a polypeptide of interest from a selected cell, where the cells comprise an expression cassette comprising a first polynucleotide encoding the polypeptide of interest, at least one stop codon downstream of the first polynucleotide, and a second polynucleotide encoding a cell membrane anchoring peptide, a reporter peptide or an epitope tag downstream of the stop codon, and where the cells are cultured in the presence of a termination suppression agent, in particular an aminoglycoside antibiotic, that results in regulated stop codon readthrough. |