Establishment of a follicular lymphoma cell line (FLK-1) dependent on follicular dendritic cell-like cell line HK. 2001

Y Kagami, and J Jung, and Y S Choi, and K Osumi, and S Nakamura, and Y Morishima, and M Seto
Department of Hematology and Chemotherapy, Aichi Cancer Center Hospital, Nagoya, Japan.

A novel cell line, FLK-1, was established from bone marrow cells of a patient with follicular lymphoma by means of co-culture with follicular dendritic cell (FDC)-like cell line HK. Immunophenotypic analysis showed that FLK-1 expressed CD10, CD19, CD20, CD38, IgG and HLA-DR, which is a typical feature of germinal center B cells. Cytogenetic analysis of FLK-1 demonstrated t(14;18)(q32;q21) translocation involving BCL2 and immunoglobulin heavy chain genes. Especially noteworthy is that the growth of FLK-1 was found to be dependent on a FDC line, HK. When HK cells were removed from the culture, FLK-1 cells stopped growing and eventually died. An apoptotic mechanism appeared to be involved as indicated by the presence of chromosome condensation and DNA ladder formation. The culture experiment using micropore membranes showed that soluble factor(s) of HK cells supported the growth, while direct cell-to-cell contact appeared to be necessary for longterm cell proliferation. These findings suggest the importance of the micro-environment for follicular lymphoma cells to grow. The FLK-1 cell line may thus prove to be useful for studying the growth mechanism of follicular lymphoma and provide new insights into the pathogenesis of follicular lymphoma.

UI MeSH Term Description Entries
D008224 Lymphoma, Follicular Malignant lymphoma in which the lymphomatous cells are clustered into identifiable nodules within the LYMPH NODES. The nodules resemble to some extent the GERMINAL CENTER of lymph node follicles and most likely represent neoplastic proliferation of lymph node-derived follicular center B-LYMPHOCYTES. Brill-Symmers Disease,Follicular Lymphoma,Lymphoma, Giant Follicular,Lymphoma, Nodular,Follicular Large-Cell Lymphoma,Follicular Lymphoma, Giant,Follicular Lymphoma, Grade 1,Follicular Lymphoma, Grade 2,Follicular Lymphoma, Grade 3,Follicular Mixed-Cell Lymphoma,Giant Follicular Lymphoma,Histiocytic Lymphoma, Nodular,Large Lymphoid Lymphoma, Nodular,Large-Cell Lymphoma, Follicular,Lymphocytic Lymphoma, Nodular, Poorly Differentiated,Lymphocytic Lymphoma, Nodular, Poorly-Differentiated,Lymphoma, Follicular Large-Cell,Lymphoma, Follicular, Grade 1,Lymphoma, Follicular, Grade 2,Lymphoma, Follicular, Grade 3,Lymphoma, Follicular, Mixed Cell,Lymphoma, Follicular, Mixed Lymphocytic-Histiocytic,Lymphoma, Follicular, Mixed Small and Large Lymphoid,Lymphoma, Follicular, Small and Large Cleaved Cell,Lymphoma, Follicular, Small and Large Cleaved-Cell,Lymphoma, Histiocytic, Nodular,Lymphoma, Large Cell, Follicular,Lymphoma, Large Lymphoid, Nodular,Lymphoma, Large-Cell, Follicular,Lymphoma, Lymphocytic, Nodular, Poorly Differentiated,Lymphoma, Lymphocytic, Nodular, Poorly-Differentiated,Lymphoma, Mixed-Cell, Follicular,Lymphoma, Nodular, Large Follicular Center Cell,Lymphoma, Nodular, Large Follicular Center-Cell,Lymphoma, Nodular, Mixed Lymphocytic Histiocytic,Lymphoma, Nodular, Mixed Lymphocytic-Histiocytic,Lymphoma, Nodular, Mixed Small and Large Cell,Lymphoma, Small Cleaved Cell, Follicular,Lymphoma, Small Cleaved-Cell, Follicular,Lymphoma, Small Follicular Center-Cell,Lymphoma, Small Lymphoid, Follicular,Mixed-Cell Lymphoma, Follicular,Nodular Large Follicular Center-Cell Lymphoma,Small Cleaved-Cell Lymphoma, Follicular,Small Follicular Center-Cell Lymphoma,Brill Symmers Disease,Disease, Brill-Symmers,Follicular Large Cell Lymphoma,Follicular Large-Cell Lymphomas,Follicular Lymphomas,Follicular Lymphomas, Giant,Follicular Mixed Cell Lymphoma,Follicular Mixed-Cell Lymphomas,Giant Follicular Lymphomas,Histiocytic Lymphomas, Nodular,Large Cell Lymphoma, Follicular,Large-Cell Lymphomas, Follicular,Lymphoma, Follicular Large Cell,Lymphoma, Follicular Mixed-Cell,Lymphoma, Nodular Histiocytic,Lymphoma, Small Follicular Center Cell,Lymphomas, Follicular,Lymphomas, Follicular Large-Cell,Lymphomas, Follicular Mixed-Cell,Lymphomas, Giant Follicular,Lymphomas, Nodular,Lymphomas, Nodular Histiocytic,Mixed Cell Lymphoma, Follicular,Mixed-Cell Lymphomas, Follicular,Nodular Histiocytic Lymphoma,Nodular Histiocytic Lymphomas,Nodular Large Follicular Center Cell Lymphoma,Nodular Lymphoma,Nodular Lymphomas,Small Cleaved Cell Lymphoma, Follicular,Small Follicular Center Cell Lymphoma
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002450 Cell Communication Any of several ways in which living cells of an organism communicate with one another, whether by direct contact between cells or by means of chemical signals carried by neurotransmitter substances, hormones, and cyclic AMP. Cell Interaction,Cell-to-Cell Interaction,Cell Communications,Cell Interactions,Cell to Cell Interaction,Cell-to-Cell Interactions,Communication, Cell,Communications, Cell,Interaction, Cell,Interaction, Cell-to-Cell,Interactions, Cell,Interactions, Cell-to-Cell
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014407 Tumor Cells, Cultured Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely. Cultured Tumor Cells,Neoplastic Cells, Cultured,Cultured Neoplastic Cells,Cell, Cultured Neoplastic,Cell, Cultured Tumor,Cells, Cultured Neoplastic,Cells, Cultured Tumor,Cultured Neoplastic Cell,Cultured Tumor Cell,Neoplastic Cell, Cultured,Tumor Cell, Cultured
D018920 Coculture Techniques A technique of culturing mixed cell types in vitro to allow their synergistic or antagonistic interactions, such as on CELL DIFFERENTIATION or APOPTOSIS. Coculture can be of different types of cells, tissues, or organs from normal or disease states. Cocultivation,Co-culture,Coculture,Co culture,Co-cultures,Cocultivations,Coculture Technique,Cocultures
D020566 Dendritic Cells, Follicular Non-hematopoietic cells, with extensive dendritic processes, found in the primary and secondary follicles of lymphoid tissue (the B cell zones). They are different from conventional DENDRITIC CELLS associated with T-CELLS. They are derived from MESENCHYMAL STEM CELLS and are negative for class II MHC antigen and do not process or present antigen like the conventional dendritic cells do. Instead, follicular dendritic cells have FC RECEPTORS and C3B RECEPTORS that hold antigen in the form of ANTIGEN-ANTIBODY COMPLEXES on their surfaces for long periods for recognition by B-CELLS. Follicular Dendritic Cells,Dendritic Reticulum Cells, Follicular,Dendritic Cell, Follicular,Follicular Dendritic Cell

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