Biomaterial Database

In vitro analysis of allogeneic lymphocyte interaction. II. I-region control of the activity of a B-cell-derived H-2-restricted allogeneic effect factor and its receptor during B-cell activation. 1978

T L Delovitch, and J Biggin, and F Y Fung

A genetically restricted allogeneic effect factor (AEF) derived from a mixed lymphocyte culture reaction between Ia-negative activated responder cells and irradiated T-cell-depleted stimulator cells was characterized. Restricted AEF is a B-cell-derived soluble helper factor which consists in part of Ia antigens controlled by the I-A subregion of the stimulator haplotype; additional control by the I-B, I-E, and I-C subregions, although unlikely, could not be excluded. This factor helps B cells of only its own haplotype or of haplotypes which carry an I-A and/or I-B subregion identity. Unprimed as well as hapten-primed Ia-positive B cells express a receptor for restricted AEF. The results indicate that the B-cell receptor for AEF is determined by the I-A subregion. Both restricted AEF and its receptor may therefore be products of the same I-region gene(s). The data are compatible with the hypothesis that the AEF Ia antigens serve as a second signal required for B-cell activation to IgG antibody production.

UI	MeSH Term	Description	Entries
D007519	Isoantigens	Antigens that exist in alternative (allelic) forms in a single species. When an isoantigen is encountered by species members who lack it, an immune response is induced. Typical isoantigens are the BLOOD GROUP ANTIGENS.	Alloantigens,Alloantigen,Isoantigen
D008198	Lymph Nodes	They are oval or bean shaped bodies (1 - 30 mm in diameter) located along the lymphatic system.	Lymph Node,Node, Lymph,Nodes, Lymph
D008211	Lymphocyte Cooperation	T-cell enhancement of the B-cell response to thymic-dependent antigens.	Cooperation, Lymphocyte,Cooperations, Lymphocyte,Lymphocyte Cooperations
D005802	Genes, MHC Class II	Genetic loci in the vertebrate major histocompatibility complex that encode polymorphic products which control the immune response to specific antigens. The genes are found in the HLA-D region in humans and include H-2M, I-A, and I-E loci in mice.	Class II Genes,Genes, Class II,Genes, HLA Class II,MHC Class II Genes,Class II Gene,Gene, Class II
D006183	H-2 Antigens	The major group of transplantation antigens in the mouse.	H2 Antigens,Antigens, H-2,Antigens, H2,H 2 Antigens
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
D000917	Antibody Formation	The production of ANTIBODIES by proliferating and differentiated B-LYMPHOCYTES under stimulation by ANTIGENS.	Antibody Production,Antibody Response,Antibody Responses,Formation, Antibody,Production, Antibody,Response, Antibody,Responses, Antibody
D001402	B-Lymphocytes	Lymphoid cells concerned with humoral immunity. They are short-lived cells resembling bursa-derived lymphocytes of birds in their production of immunoglobulin upon appropriate stimulation.	B-Cells, Lymphocyte,B-Lymphocyte,Bursa-Dependent Lymphocytes,B Cells, Lymphocyte,B Lymphocyte,B Lymphocytes,B-Cell, Lymphocyte,Bursa Dependent Lymphocytes,Bursa-Dependent Lymphocyte,Lymphocyte B-Cell,Lymphocyte B-Cells,Lymphocyte, Bursa-Dependent,Lymphocytes, Bursa-Dependent
D001665	Binding Sites	The parts of a macromolecule that directly participate in its specific combination with another molecule.	Combining Site,Binding Site,Combining Sites,Site, Binding,Site, Combining,Sites, Binding,Sites, Combining
D012995	Solubility	The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Solubilities