Abstract

The repertoire of acceptor glycoproteins for concanavalin A expressed by a cultured tumour cell reflects the normal developmental lineage from which it was derived, as well as the degree of maturation along that lineage. Antibodies to this particular set of glycoproteins show a considerable specificity towards normal differentiation antigens which are often preferentially associated with the less mature intermediates of the corresponding pathway. In addition, comparisons between ‘immature’ and ‘mature’ tumour cells can be used to identify glycoproteins associated with specific differentiated functions such as secretion. Thus tumour cell glycoproteins provide useful probes for analysis of the molecular biology of development and differentiation.