Interaction of immune complexes with cultured rabbit glomerular cells

Nephron
|January 1, 1982
PubMed

Rabbit glomerular cell cultures were established from adolescent and mature rabbits in the absence of antibiotics. Fibroblast growth factor was added to half the cultures. Immune complexes (IC) formed with 125I bovine albumin and rabbit antibody were incubated with 10-day-old cultures for 44 h. Cell-IC interaction was observed in all samples but was increased in cultures without growth factor: the effect was not age dependent. Cells cultured without growth factor had increased surface accumulation of fibronectin. Addition of antifibronectin antibody to cell cultures did not inhibit cell complex interaction. The presence of unlabeled IC reduced labeled IC binding in cultures without growth factor. Binding of IC made with F(ab')2 fragments exceeded that of IC made with intact IgG. The results suggest IC bind with cultured glomerular cells and the degree of interaction is influenced by the presence of growth factors which alter cell membrane composition.

Related Concept Videos

Hybridoma Technology01:31

Hybridoma Technology

Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
Hybridoma Selection
Commonly used fusion techniques — electroporation, polyethylene glycol...
Antibody Actions01:26

Antibody Actions

Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
Hypersensitivity Reactions: Immune-Complex Reactions01:19

Hypersensitivity Reactions: Immune-Complex Reactions

Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...