Related Experiment Videos
Interaction of immune complexes with cultured rabbit glomerular cells
Nephron
|January 1, 1982
Summary
Fibroblast growth factor influences how immune complexes (IC) bind to glomerular cells in rabbits. Reduced binding occurred with growth factor, suggesting altered cell membrane composition impacts IC interaction.
Area of Science:
- Nephrology
- Cell Biology
- Immunology
Background:
- Glomerular cells play a crucial role in kidney function.
- Immune complex (IC) deposition is implicated in various kidney diseases.
- Understanding cell-IC interactions is vital for nephrology research.
Purpose of the Study:
- To investigate the interaction between immune complexes and cultured rabbit glomerular cells.
- To determine the influence of fibroblast growth factor (FGF) on this interaction.
- To explore the role of cell surface components like fibronectin.
Main Methods:
- Establishment of rabbit glomerular cell cultures from adolescent and mature rabbits.
- Incubation of cultures with radiolabeled immune complexes (IC) formed with bovine albumin.
- Treatment of cultures with and without fibroblast growth factor (FGF).
- Analysis of cell-IC binding, fibronectin accumulation, and effect of antifibronectin antibodies.
Main Results:
- Cell-IC interaction was observed in all cultures.
- IC binding was significantly increased in cultures without FGF, irrespective of rabbit age.
- FGF-deprived cells showed increased surface fibronectin accumulation.
- Antifibronectin antibody did not inhibit IC binding, suggesting fibronectin is not the primary binding site.
Conclusions:
- Immune complexes bind to cultured glomerular cells.
- Fibroblast growth factor modulates the degree of IC-glomerular cell interaction.
- Growth factors appear to alter glomerular cell membrane composition, affecting IC binding dynamics.