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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The proto-oncogene c-ets is preferentially expressed in lymphoid cells.

The transforming sequences of the avian acute leukemia virus, E26, contain two distinct oncogenes, v-mybE and v-ets, fused together. By using a probe containing v-ets sequences, polyadenylated transcripts of the c-ets proto-oncogene were detected in avian tissues; they included a major 7.0-kilobase and a minor 2.0-kilobase species. These c-ets mRNAs were detected at high levels only in lymphoid organs and in avian T and B lymphoid cell lines. A similar pattern of c-ets transcription was observed in human hematopoietic cell lines, with transcripts detected in lymphoid B and T cells but not in erythroid or myeloid cells. The E26 oncogene was inserted into an inducible expression vector, and a 90-kilodalton protein (bp90) was produced in bacteria. Rabbit antisera raised to purified bp90 precipitated P135gag-mybE-ets, the v-mybE-ets polyprotein expressed in E26-transformed cells, and also reacted with p50v-mybA, the transforming protein of the avian myeloblastosis virus. Antiserum to bp90 was absorbed with a bacterially synthesized v-mybA protein to remove anti-myb activity. The absorbed anti-bp90 serum retained the ability to immunoprecipitate P135gag-mybE-ets from E26-transformed cells and specifically reacted with a 56-kilodalton polypeptide ( p56) detected in chicken lymphoid organs and in T and B lymphocytes of both avian and human origin. The data suggest that p56 is a translational product of the c-ets proto-oncogene and imply that p56 may be involved in regulating the growth of lymphoid cells.[1]


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