Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...
Patent
1993-03-12
1996-05-07
Saunders, David
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving antigen-antibody binding, specific binding protein...
435 29, 435240241, 436 63, 436503, C12Q 102, G01N 33567
Patent
active
055145558
ABSTRACT:
The present invention relates to a novel assay for lymphocyte chemotaxis. The assay is transendothelial assay using endothelial cells cultured on microporous filters. Lymphocyte transmigration through the filter toward a suspected chemoattractant is measured. Apparatuses for carrying out the assay are also provided. The apparatuses and methods of the present invention can be used for the identification of inhibitors (e.g., antagonists) or promoters (chemoattractants) of the adhesion receptor-mediated migration of leukocytes through the endothelium (extravasation). Such inhibitors and promoters respectively inhibit and promote the inflammatory response, and thus have therapeutic utilities. The inhibitors and promoters are identified by detecting their abilities to respectively inhibit or promote the chemotaxis of lymphocytes in the assay of the invention. The assay of the invention also has diagnostic utilities for detecting a disease or disorder involving a defect in lymphocyte chemotaxis. In a specific embodiment, the invention provides a novel lymphocyte chemoattractant, termed LCA, of molecular weight of about 14,500.+-.3,000 daltons. Derivatives and analogs of LCA, and antibodies and antibody fragments thereto are also provided. The invention also relates to therapeutic uses and compositions related to the foregoing.
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Carr Michelle W.
Roth Stephen J.
Springer Timothy A.
Center For Blood Research, Inc.
Saunders David
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