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. 1984 Sep;53(1):87–95.

Production and characterization of monoclonal antibodies against rat brush border antigens of the proximal convoluted tubule.

P Ronco, C Melcion, M Geniteau, E Ronco, L Reininger, M Galceran, P Verroust
PMCID: PMC1454736  PMID: 6381294

Abstract

In order to understand further the processes involved in immunological injury of the kidney, we have prepared monoclonal antibodies against brush border (BB) antigens of rat proximal tubule. The 27 antibodies which constitute the basis of this report have been cloned, characterized immunochemically, and classified in three specificity groups on the basis of tissue reactivity. The first group is made up of six antibodies reacting with antigens simultaneously present on BB and glomerulus: three are directed against a high molecular weight (MW) protein which migrates with an apparent MW of 330,000; two react with a 90,000 MW protein that is present diffusely on renal and intestinal BB as well as on endothelial cells; one recognizes an antigen exclusively present on superficial tubules and glomerular epithelial cells, which could not be chemically characterized. The second group is made up of eight antibodies present on renal and intestinal BB: five react with a 120,000 MW antigen, one with a 300,000 MW antigen. The third group comprises 13 antibodies. Two are directed against antigens present within the cytoplasm or the basolateral membranes of renal tubules. Eleven react with intracellular antigens probably related to the cytoskeleton. Since they have been identified through several fusions, some of the monoclonal antibodies described are probably directed against immunodominant proteins of the BB. They open new possibilities for purifying the corresponding antigens by affinity chromatography as well as for obtaining BB preparations selectively depleted of the strongest immunogens thus favouring antibody production to previously unrecognized antigens.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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