title: U-2940, a human B-cell line derived from a diffuse large cell lymphoma sequential to Hodgkin lymphoma.
abstract: Several patterns of association between Hodgkin and non-Hodgkin lymphomas are recognized, some of which support a common cellular origin or shared transformation events for both malignancies. We describe the U-2940 cell line derived from a diffuse large B-cell lymphoma with some features consistent with mediastinal large B-cell lymphoma, clinically apparent 1 month after the initial course of chemotherapy for Hodgkin's disease, fulfilling the criteria for composite malignancies. U-2940 cells display a mature B phenotype with hypermutated IgH rearrangement typical of germinal/postgerminal center origin. The cell line is negative for Epstein-Barr virus and no evidence of t(14;18) was found. U-2940 cells display multiple chromosomal rearrangements similar to recurrent aberrations described in both Hodgkin and non-Hodgkin lymphomas, also partially shared by U-2932 derived from a B-cell lymphoma sequential to Hodgkin's disease. The original large B-cell lymphoma and the U-2940 cell line bear microsatellite instability, an abnormality associated with particular subtypes of non-Hodgkin lymphomas and found in tissues involved by Hodgkin lymphoma. Therefore, U-2940 cells bear several features known to occur in Hodgkin and in non-Hodgkin lymphomas, leading to the assumption that this cell line may constitute a useful tool to address elective pathways of lymphomagenesis and eventually the Hodgkin and non-Hodgkin lymphoma association.
authors.affiliation: Institute for Molecular Pathology and Immunology, Porto University, Porto, Portugal.
authors.forename: Clara
authors.initials: C
authors.lastname: Sambade
authors.forename: Mattias
authors.initials: M
authors.lastname: Berglund
authors.forename: Svetlana
authors.initials: S
authors.lastname: Lagercrantz
authors.forename: Jan
authors.initials: J
authors.lastname: Sällström
authors.forename: Rui M
authors.initials: RM
authors.lastname: Reis
authors.forename: Gunilla
authors.initials: G
authors.lastname: Enblad
authors.forename: Bengt
authors.initials: B
authors.lastname: Glimelius
authors.forename: Christer
authors.initials: C
authors.lastname: Sundström
mesh_terms: D000293:Adolescent; D000818:Animals; D045744:Cell Line, Tumor; D002869:Chromosome Aberrations; D002883:Chromosomes, Human, Pair 14 / Q000235:genetics; D002887:Chromosomes, Human, Pair 18 / Q000235:genetics; D003114:Colony-Forming Units Assay; D004273:DNA, Neoplasm / Q000032:analysis; D020031:Epstein-Barr Virus Infections / Q000209:etiology / Q000473:pathology; D005260:Female; D015321:Gene Rearrangement; D004854:Herpesvirus 4, Human / Q000472:pathogenicity; D006689:Hodgkin Disease / Q000188:drug therapy / Q000473:pathology*; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics; D016393:Lymphoma, B-Cell / Q000235:genetics / Q000473:pathology*; D016403:Lymphoma, Large B-Cell, Diffuse / Q000473:pathology*; D008479:Mediastinal Neoplasms / Q000473:pathology*; D051379:Mice; D008819:Mice, Nude; D016609:Neoplasms, Second Primary / Q000209:etiology / Q000473:pathology*; D032681:Spectral Karyotyping; D014178:Translocation, Genetic
chemical_list: D004273:DNA, Neoplasm; D007143:Immunoglobulin Heavy Chains