title: Lack of CSF-1 receptor message in Reed-Sternberg cells.
abstract: The histogenesis of the Reed-Sternberg (R-S) cell in Hodgkin's disease is uncertain. Some have suggested that it is a derivative of the monocyte/macrophage lineage. To explore this possibility, we have searched for the presence of mRNA corresponding to the c-fms proto-oncogene, a marker for cells of the monocyte/macrophage lineage which encodes the colony-stimulating factor-1 receptor. In situ hybridization was performed using a single-stranded c-fms complementary RNA (cRNA) to probe R-S cells, lymphocytes, and eosinophils from touch imprints of a lymph node from a 12-year-old boy with mixed cellularity Hodgkin's disease in relapse. The probe was synthesized from a bacterial plasmid, pSM3, into which a portion of v-fms (a viral-derived oncogene) had been inserted. The plasmid was linearized with a restriction endonuclease, and 35S-labeled cRNA was synthesized from the DNA template using T3 RNA polymerase and the nucleotide analog [35S]UTP. Positive control hybridizations were obtained with the human acute promyelocytic cell line HL-60 induced to monocyte differentiation. R-S cells were clearly negative, supporting a cell of origin other than the monocyte. In situ hybridization is a potentially powerful method for exploring differentiation and assigning cell lineage in R-S cells.
authors.affiliation: Institute of Pathology, Case Western Reserve University, Cleveland, Ohio 44106.
authors.forename: D C
authors.initials: DC
authors.lastname: Farhi
mesh_terms: D002648:Child; D002762:Cholecalciferol / Q000494:pharmacology; D004804:Eosinophils / Q000032:analysis; D006689:Hodgkin Disease / Q000235:genetics / Q000473:pathology*; D006801:Humans; D008297:Male; D009693:Nucleic Acid Hybridization; D000090063:Proto-Oncogene Mas; D011519:Proto-Oncogenes; D012333:RNA, Messenger / Q000235:genetics; D011956:Receptors, Cell Surface / Q000235:genetics*; D016184:Receptors, Colony-Stimulating Factor; D014407:Tumor Cells, Cultured
chemical_list: C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D012333:RNA, Messenger; D011956:Receptors, Cell Surface; D016184:Receptors, Colony-Stimulating Factor; D002762:Cholecalciferol