title: Sublocalization of c-myb to 6q21----q23 by in situ hybridization and c-myb expression in a human teratocarcinoma with 6q rearrangements.
abstract: We have sublocalized the human proto-oncogene c-myb by applying two different techniques: in situ hybridization of metaphase spreads and chromosome spot hybridization of flow-sorted chromosomes. For this we used a teratocarcinoma cell line carrying specific chromosome translocations involving the two chromosomes 6 and one chromosome 11. The distribution of the c-myb gene copies on the different translocation chromosomes revealed that c-myb is located in the region 6q21----q23. Because of the close proximity of the c-myb locus to the chromosomal breakpoints in the teratocarcinoma, we investigated whether c-myb was implicated in the development of this tumor. No rearrangement, deletion, or amplification of the gene was detected in the teratocarcinoma cells. Furthermore, the level of c-myb expression was comparable to that of other cell lines of nonhematopoietic origin. These results suggest that c-myb was not affected by the translocation and played no significant role in the development of this teratocarcinoma.
mesh_terms: D002460:Cell Line; D002871:Chromosome Banding; D002874:Chromosome Mapping; D002906:Chromosomes, Human, 6-12 and X; D004262:DNA Restriction Enzymes; D004273:DNA, Neoplasm / Q000302:isolation & purification; D006801:Humans; D007621:Karyotyping; D008677:Metaphase; D009693:Nucleic Acid Hybridization; D000090063:Proto-Oncogene Mas; D011519:Proto-Oncogenes; D012334:RNA, Neoplasm / Q000302:isolation & purification; D013724:Teratoma / Q000235:genetics*
chemical_list: D004273:DNA, Neoplasm; C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D012334:RNA, Neoplasm; D004262:DNA Restriction Enzymes