Specificity and cross-reactivity of monoclonal antibodies reactive with the core and lipid A regions of bacterial lipopolysaccharide. 1989

M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
Department of Medicine, F. Edward Hebert School of Medicine, Uniformed Services University, Bethesda, Maryland 20814-4799.

Twenty-nine murine monoclonal antibodies (MAbs) were prepared against antigenic determinants in the core and lipid A regions of Escherichia coli and Salmonella minnesota lipopolysaccharide (LPS). At least eight distinct MAb specificities were identified. Epitopes recognized by MAbs bearing these specificities were localized in the hexose, heptose, and 2-keto-3-deoxy-D-manno-octulosonic acid regions of the core oligosaccharide and on lipid A. Two groups of MAbs exhibited multispecificity for similar but distinct core- and lipid A-related epitopes. Some core-reactive MAbs cross-reacted with corresponding E. coli and Salmonella rough mutant chemotypes; others were specific for E. coli J5 LPS. Lipid A-specific MAbs reacted with free lipid A from diverse sources. Few MAbs reacted with smooth LPS. Antibody cross-reactivity was restricted by inter- and intraspecies differences in covalent core structure and by epitope concealment by overlying O-side chain and core sugars. The putative cross-reactive and antiendotoxic properties of MAbs specific for the core-lipid A complex may be limited by the inability of such MAbs to recognize determinants on "native" LPS.

UI MeSH Term Description Entries
D008050 Lipid A Lipid A is the biologically active component of lipopolysaccharides. It shows strong endotoxic activity and exhibits immunogenic properties.
D008070 Lipopolysaccharides Lipid-containing polysaccharides which are endotoxins and important group-specific antigens. They are often derived from the cell wall of gram-negative bacteria and induce immunoglobulin secretion. The lipopolysaccharide molecule consists of three parts: LIPID A, core polysaccharide, and O-specific chains (O ANTIGENS). When derived from Escherichia coli, lipopolysaccharides serve as polyclonal B-cell mitogens commonly used in laboratory immunology. (From Dorland, 28th ed) Lipopolysaccharide,Lipoglycans
D008807 Mice, Inbred BALB C An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse
D003429 Cross Reactions Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen. Cross Reaction,Reaction, Cross,Reactions, Cross
D004797 Enzyme-Linked Immunosorbent Assay An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed. ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D006461 Hemolysis The destruction of ERYTHROCYTES by many different causal agents such as antibodies, bacteria, chemicals, temperature, and changes in tonicity. Haemolysis,Extravascular Hemolysis,Intravascular Hemolysis,Extravascular Hemolyses,Haemolyses,Hemolyses, Extravascular,Hemolyses, Intravascular,Hemolysis, Extravascular,Hemolysis, Intravascular,Intravascular Hemolyses
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000911 Antibodies, Monoclonal Antibodies produced by a single clone of cells. Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000918 Antibody Specificity The property of antibodies which enables them to react with some ANTIGENIC DETERMINANTS and not with others. Specificity is dependent on chemical composition, physical forces, and molecular structure at the binding site. Antibody Specificities,Specificities, Antibody,Specificity, Antibody
D001419 Bacteria One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive. Eubacteria

Related Publications

M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
December 1994, Journal of bacteriology,
M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
December 1986, Journal of immunology (Baltimore, Md. : 1950),
M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
July 1993, Molecular immunology,
M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
April 2001, Hybridoma,
M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
December 1984, Infection and immunity,
M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
February 1987, Molecular immunology,
M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
November 1987, Molecular immunology,
M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
January 1984, Developments in biological standardization,
M Pollack, and J K Chia, and N L Koles, and M Miller, and G Guelde
April 1991, The Journal of infectious diseases,
Copied contents to your clipboard!