@article{BarnekowGessler1986, author = {Barnekow, Angelika and Gessler, Manfred}, title = {Activation of the pp60\(^{c-src}\) kinase during differentiation of monomyelocytic cells in vitro}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-59278}, year = {1986}, abstract = {Tbe proto-oncogene c-src, the cellular homolog of the Rous sarcoma virus (RSV) transforming gene v-src, is expressed in a tissue-specific and age-dependent manner. Its physiological function, although still unknown, appears to be more closely related to differentiation processes than to proliferation processes. To obtain more information about the physiological role of the c-src gene in cells, we have studied differentiation-dependent alterations using the human HL-60 leukaemia cell line as a model system. Induction of monocytic and granulocytic differentiation of HL-60 cells by 12-0-tetradecanoylphorbol-13-acetate (TPA) and dimethylsulfoxide (DMSO) is associated with an activation of the pp60c-src tyrosine kinase, but not with increased c-src gene expression. Control experiments exclude an interaction of TPA and DMSO themselves with the pp60c-src kinase.}, subject = {Biochemie}, language = {en} } @article{GesslerBarnekow1984, author = {Gessler, Manfred and Barnekow, Angelika}, title = {Differential expression of the cellular oncogenes c-src and c-yes in embryonal and adult chicken tissues}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-59289}, year = {1984}, abstract = {The cellular onc-genes c-src and c-yes are expressed very differently during chicken embryonic development. The c-src mRNA and its translational product are detectable at high levels in brain extracts of chicken embryos and adult chickens, whereas muscle extracts show an age-dependent decrease in the amounts of c-src-specific mRNA and pp60c-src kinase activity. In contrast, the Ievels of c-yes mRNA in brain, heart, and muscle are relatively low in early embryonic stages and increase later on to values comparable to those found for liver, while in adult animals the pattern of c-yes expression is similar to that of the c-src gene. From the close correlation between the Ievels of pp60c-src, its enzymatic activity, and its corresponding mRNA at a given stage of development and in given tissues, it appears that the expression of pp60c-src is primarily controlled at the level of transcription. It is suggested that because of the different patterns of expression, the two cellular oncogenes, c-src and c-yes, play different roles in cell proliferation during early embryonic stages as weil as in ensuing differentiation processes.}, subject = {Biochemie}, language = {en} }