v-cbl, an oncogene from a dual-recombinant murine retrovirus that induces early B-lineage lymphomas

  1. W Y Langdon,
  2. J W Hartley,
  3. S P Klinken,
  4. S K Ruscetti, and
  5. H C Morse3rd
  1. Walter and Eliza Hall Institute of Medical Research, Royal Melbourne Hospital, Parkville, Victoria, Australia.

Abstract

Cas NS-1 is an acutely transforming murine retrovirus that induces pre-B and pro-B cell lymphomas. Molecular cloning showed it was generated from the ecotropic Cas-Br-M virus by sequential recombinations with endogenous retroviral sequences and a cellular oncogene. The oncogene sequence shows no homology with known oncogenes but some similarity to the yeast transcriptional activator GCN4. A 100-kDa gag-cbl fusion protein, with no detectable kinase activity, is responsible for the cellular transformation. The cellular homologue of v-cbl, present in mouse and human DNA, is expressed in a range of hemopoietic lineages.

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  1. PNAS 1989-02 vol. 86 no. 4 1168-1172
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