Biomaterial Database

The requirement of lipids for the formation of immunostimulating complexes (iscoms). 1988

K Lövgren, and B Morein

National Veterinary Institute, Department of Virology, Biomedicum, Uppsala, Sweden.

The iscom--immunostimulating complex--is a highly immunogenic formulation of microbial membrane antigens. The biochemically analyzed components of the iscom are the protein and the glycoside Quil A. Continued analysis of the iscom showed that the protein moiety--the antigen--does not contribute to the iscom as a construct. Instead, cholesterol and Quil A are the essential structural components assembled together into a typical cage-like structure. A more "fluid" lipid, such as phosphatidylcholine, is needed to facilitate the incorporation of amphipathic poly- or oligopeptides into the iscom matrix.

UI	MeSH Term	Description	Entries
D010455	Peptides	Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS.	Peptide,Polypeptide,Polypeptides
D002499	Centrifugation, Density Gradient	Separation of particles according to density by employing a gradient of varying densities. At equilibrium each particle settles in the gradient at a point equal to its density. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Centrifugations, Density Gradient,Density Gradient Centrifugation,Density Gradient Centrifugations,Gradient Centrifugation, Density,Gradient Centrifugations, Density
D002784	Cholesterol	The principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils.	Epicholesterol
D005537	Aphthovirus	A genus of the family PICORNAVIRIDAE infecting mainly cloven-hoofed animals. They cause vesicular lesions and upper respiratory tract infections. FOOT AND MOUTH DISEASE VIRUS is the type species.	Equine rhinitis A virus,Equine rhinovirus 1,Aphthoviruses
D000276	Adjuvants, Immunologic	Substances that augment, stimulate, activate, potentiate, or modulate the immune response at either the cellular or humoral level. The classical agents (Freund's adjuvant, BCG, Corynebacterium parvum, et al.) contain bacterial antigens. Some are endogenous (e.g., histamine, interferon, transfer factor, tuftsin, interleukin-1). Their mode of action is either non-specific, resulting in increased immune responsiveness to a wide variety of antigens, or antigen-specific, i.e., affecting a restricted type of immune response to a narrow group of antigens. The therapeutic efficacy of many biological response modifiers is related to their antigen-specific immunoadjuvanticity.	Immunoactivators,Immunoadjuvant,Immunoadjuvants,Immunologic Adjuvant,Immunopotentiator,Immunopotentiators,Immunostimulant,Immunostimulants,Adjuvant, Immunologic,Adjuvants, Immunological,Immunologic Adjuvants,Immunological Adjuvant,Adjuvant, Immunological,Immunological Adjuvants
D012503	Saponins	A type of glycoside widely distributed in plants. Each consists of a sapogenin as the aglycone moiety, and a sugar. The sapogenin may be a steroid or a triterpene and the sugar may be glucose, galactose, a pentose, or a methylpentose.	Saponin
D014316	Tritium	The radioactive isotope of hydrogen also known as hydrogen-3. It contains two NEUTRONS and one PROTON in its nucleus and decays to produce low energy BETA PARTICLES.	Hydrogen-3,Hydrogen 3
D015060	1,2-Dipalmitoylphosphatidylcholine	Synthetic phospholipid used in liposomes and lipid bilayers to study biological membranes. It is also a major constituent of PULMONARY SURFACTANTS.	Dipalmitoyllecithin,1,2-Dihexadecyl-sn-Glycerophosphocholine,1,2-Dipalmitoyl-Glycerophosphocholine,Dipalmitoyl Phosphatidylcholine,Dipalmitoylglycerophosphocholine,Dipalmitoylphosphatidylcholine,1,2 Dihexadecyl sn Glycerophosphocholine,1,2 Dipalmitoyl Glycerophosphocholine,1,2 Dipalmitoylphosphatidylcholine,Phosphatidylcholine, Dipalmitoyl
D062605	Quillaja Saponins	Natural detergents made up of a heterogeneous mixture of molecules having a triterpenoid core structure. They vary in aglycone (sapogenin) and sugar moieties, including glucose.	Quillaja Saponin,Saponin, Quillaja,Saponins, Quillaja