rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
3
|
pubmed:dateCreated |
1998-3-11
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pubmed:abstractText |
Ig class switching usually occurs as a consequence of cognate interactions between antigen-specific B cells and CD4(+) alphabeta T cells. Vesicular stomatitis virus (VSV) infection of immunocompetent mice induces a rapid T-independent neutralizing IgM response followed by a long-lived T-dependent IgG response. Surprisingly, alphabeta T cell-deficient (TCRalpha-/-) mice also produced neutralizing IgG antibodies when infected with live VSV or with a recombinant vaccinia virus expressing the VSV glycoprotein (Vacc-IND-G), but not when immunized with UV-inactivated VSV (UV-VSV). The neutralizing IgG responses did not require the presence of NK cells or complement, but were crucially dependent on IFN-gamma and were predominantly of the IgG2a isotype. IgG production depended on residual CD3(+) non-alphabeta T cell populations present in the TCRalpha-/- mice, which produced IFN-gamma upon in vitro stimulation. A key role for gammadelta T cells was confirmed by the fact that TCRbeta-/- mice also generated strong neutralizing IgG responses to VSV, whereas TCRbeta-/-delta-/- mice produced very low titers. The neutralizing IgG responses of TCRalpha-/- mice were accompanied by the development of memory B cells, but not by antigen-specific germinal center (GC) formation. Thus, during viral infection of alphabeta T cell-deficient mice, gammadelta T cells may provide the signals that are required for isotype switching.
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pubmed:commentsCorrections |
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Feb
|
pubmed:issn |
0027-8424
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pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
3
|
pubmed:volume |
95
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
1160-5
|
pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:9448302-Animals,
pubmed-meshheading:9448302-Antibodies, Viral,
pubmed-meshheading:9448302-Complement Activation,
pubmed-meshheading:9448302-Germinal Center,
pubmed-meshheading:9448302-Immunoglobulin Class Switching,
pubmed-meshheading:9448302-Immunoglobulin G,
pubmed-meshheading:9448302-Interferon-gamma,
pubmed-meshheading:9448302-Killer Cells, Natural,
pubmed-meshheading:9448302-Mice,
pubmed-meshheading:9448302-Mice, Inbred C57BL,
pubmed-meshheading:9448302-Receptors, Antigen, T-Cell, gamma-delta,
pubmed-meshheading:9448302-Rhabdoviridae Infections,
pubmed-meshheading:9448302-Stomatitis,
pubmed-meshheading:9448302-T-Lymphocytes,
pubmed-meshheading:9448302-Vesicular stomatitis Indiana virus
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pubmed:year |
1998
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pubmed:articleTitle |
Interferon gamma-producing gammadelta T cell-dependent antibody isotype switching in the absence of germinal center formation during virus infection.
|
pubmed:affiliation |
Institute of Experimental Immunology, Department of Pathology, University of Zürich, Schmelzbergstrasse 12, CH-8091, Zürich, Switzerland. kmaloy@pathol.unizh.ch
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
|