title: Long-term-cultured mouse B-lymphocyte line. I. Establishment and characterization of mouse B-lymphocyte line.
abstract: Mouse B-cell line was established by culturing anti-Thy-1 antibody and complement-treated splenic B cells with the conditioned medium of concanavalin A-stimulated spleen cell-culture supernatant. At the eighth week of culture, it was revealed that 100% of the long-term-cultured cells had both cytoplasmic and surface immunoglobulin. These cells were then maintained in the conditioned medium together with T-cell-depleted splenic and then splenic adherent feeder cells. Flow cytometric studies of the B-cell line showed that they had surface mu, delta, and kappa but no gamma, lambda, Lyt-1, or Lyt-2. The growth of the B-cell line was dependent on the factor(s) derived from concanavalin A-stimulated conditioned medium. It was found that IL-2 was the major factor supporting the B-cell growth. The B-cell line did not secrete immunoglobulin spontaneously, but it could differentiate into antibody-forming cells through the stimulation of bacterial lipopolysaccharides. The technique for obtaining mouse B-cell lines are reproducible in our laboratory and one of those lines has been propagated and maintained for 16 months to the present.
mesh_terms: D000818:Animals; D000917:Antibody Formation / Q000187:drug effects; D000921:Antibody-Producing Cells / Q000166:cytology; D001402:B-Lymphocytes / Q000166:cytology*; D002454:Cell Differentiation / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D007376:Interleukin-2 / Q000502:physiology; D008070:Lipopolysaccharides / Q000494:pharmacology; D051379:Mice; D008854:Microscopy, Electron; D013154:Spleen / Q000166:cytology; D013997:Time Factors
chemical_list: D007376:Interleukin-2; D008070:Lipopolysaccharides