Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-2-7
pubmed:abstractText
A human IgM Ab, serum-derived human IgM 12 (sHIgM12), is identified that binds mouse and human dendritic cells (DC), inducing dramatic immunopotentiation following treatment of the mouse DC in vitro. Competition, transfection, and knockout studies identified the ligand on mouse DC as the costimulatory molecule family member B7-DC. Potent T cell responses are stimulated by Ag-pulsed DC treated with the sHIgM12 Ab in vitro and upon adoptive transfer of Ab-treated Ag-pulsed DC into animals. The multivalent structure of pentameric IgM provides the potential for cross-linking cell surface targets, endowing the soluble Abs with biological potential not normally associated with immune function. The ability of the sHIgM12 Ab to potentiate the immune response is dependent on the multimeric structure of IgM, as bivalent monomers do not retain this property. Furthermore, pretreatment of DC with IgM monomers blocks subsequent potentiation by intact IgM pentamers, an indication that cross-linking of B7-DC on the cell surface is critical for potentiation of Ag presentation. These findings imply that, in addition to known costimulatory roles, B7-DC can function as a receptor for signals delivered by cells expressing B7-DC ligands.
pubmed:grant
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
170
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1830-8
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed-meshheading:12574348-Adjuvants, Immunologic, pubmed-meshheading:12574348-Animals, pubmed-meshheading:12574348-Antibodies, Monoclonal, pubmed-meshheading:12574348-Antigen Presentation, pubmed-meshheading:12574348-Antigens, CD80, pubmed-meshheading:12574348-Binding Sites, Antibody, pubmed-meshheading:12574348-Cell Line, pubmed-meshheading:12574348-Cell Membrane, pubmed-meshheading:12574348-Cells, Cultured, pubmed-meshheading:12574348-Dendritic Cells, pubmed-meshheading:12574348-Humans, pubmed-meshheading:12574348-Immunity, Innate, pubmed-meshheading:12574348-Immunoglobulin M, pubmed-meshheading:12574348-Lymphocyte Activation, pubmed-meshheading:12574348-Mice, pubmed-meshheading:12574348-Mice, Inbred BALB C, pubmed-meshheading:12574348-Mice, Inbred C3H, pubmed-meshheading:12574348-Mice, Inbred C57BL, pubmed-meshheading:12574348-Mice, Knockout, pubmed-meshheading:12574348-Mice, Transgenic, pubmed-meshheading:12574348-Programmed Cell Death 1 Ligand 2 Protein, pubmed-meshheading:12574348-Receptors, Fc, pubmed-meshheading:12574348-Receptors, IgG, pubmed-meshheading:12574348-Species Specificity, pubmed-meshheading:12574348-Structure-Activity Relationship, pubmed-meshheading:12574348-T-Lymphocytes
pubmed:year
2003
pubmed:articleTitle
Naturally occurring human IgM antibody that binds B7-DC and potentiates T cell stimulation by dendritic cells.
pubmed:affiliation
Department of Immunology, Mayo Medical and Graduate Schools, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Retracted Publication, Research Support, Non-U.S. Gov't