title: Bigenotypic and biphenotypic appearance of immunoglobulin light chains in 1 of 3 non-Hodgkin's lymphoma xenografts.
abstract: Chromosomal analysis of three human non-Hodgkin's lymphoma (NHL) xenografts revealed common extra 14q+ segment and other individual clonal markers without involvement of immunoglobulin light-chain regions. Two NHL xenografts (HT 58 and HT 130) showed restricted lambda light chain expression and deleted kappa and rearranged lambda genes. However, in HT 117 both kappa and lambda chains were present on the cell surface, and both light chain genes showed rearranged alleles. This unique phenomenon could have resulted from either disturbed regulation of isotype exclusion or from the malignant transformation of light chain 'uncommitted' B cells.
authors.affiliation: 1st Institute of Pathology and Experimental Cancer Research, Semmelweis Medical University, Budapest, Hungary.
authors.forename: L
authors.initials: L
authors.lastname: Kopper
authors.forename: A
authors.initials: A
authors.lastname: Bánkfalvi
authors.forename: J
authors.initials: J
authors.lastname: Földi
authors.forename: R
authors.initials: R
authors.lastname: Mihalik
authors.forename: M
authors.initials: M
authors.lastname: Magyar
authors.forename: A
authors.initials: A
authors.lastname: Aczél
mesh_terms: D000818:Animals; D000906:Antibodies; D000911:Antibodies, Monoclonal; D015321:Gene Rearrangement; D005838:Genotype; D006801:Humans; D007147:Immunoglobulin Light Chains / Q000235:genetics*; D007165:Immunosuppression Therapy; D007621:Karyotyping; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics / Q000276:immunology* / Q000473:pathology; D051379:Mice; D010641:Phenotype; D015183:Restriction Mapping; D014183:Transplantation, Heterologous
chemical_list: D000906:Antibodies; D000911:Antibodies, Monoclonal; D007147:Immunoglobulin Light Chains