Role of antigen-specific T cell help in the generation of in vivo antibody responses. I. Antigen-specific T cell help is required to generate a polyclonal IgG1 response in anti-IgD antibody-injected mice
A system in which injection of mice with an antibody to mouse IgD that they recognize as foreign stimulates a large, T cell-dependent IgG response was used to study whether Ag-specific T cell help is required to stimulate polyclonal (non-Ag-specific) IgG production in vivo. Igha x Ighb allotype heterozygous mice were injected with a conjugate of a foreign Ag coupled to a mAb specific for one of the two IgD allotypes expressed in these mice. This conjugate cross-links mIgD on B cells that express the recognized allotype. These cells process the conjugate and present the foreign Ag to Ag-specific T lymphocytes, which become activated. Thus, B cells of the recognized allotype can be stimulated by cross-linking of their mIgD, Ag-specific T cell help, non-Ag-specific cytokines, and non-Ag-specific contact with activated T cells. In contrast, B cells that express the Igh allotype not recognized by the Ag-anti-IgD antibody conjugate (bystander B cells) can be stimulated in this system only by non-Ag-specific cytokines and non-Ag-specific contact with activated T cells. Although both recognized and bystander B cells in conjugate-injected mice demonstrated substantial increases in size and Ia expression, only the recognized B cells were induced to synthesize DNA and to make a substantial polyclonal Ig response. Bystander B cells still failed to secrete IgG when mice were injected with an anti-IgD-Ag conjugate specific for the other Igh allotype as well as a mAb that cross-linked IgD of the bystander B cell allotype. These observations demonstrate that although non-Ag-specific cytokine and contact-mediated T cell help are sufficient to induce B cells to increase in size and Ia expression in anti-IgD antibody-injected mice, Ag-specific T cell help is required to stimulate the generation of an IgG response in these mice.
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
1992 |
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| Erschienen: |
1992 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:149 |
|---|---|
| Enthalten in: |
Journal of immunology (Baltimore, Md. : 1950) - 149(1992), 12 vom: 15. Dez., Seite 3836-44 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Morris, S C [VerfasserIn] |
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| Anmerkungen: |
Date Completed 14.01.1993 Date Revised 14.11.2007 published: Print Citation Status MEDLINE |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM012614459 |
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| 100 | 1 | |a Morris, S C |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Role of antigen-specific T cell help in the generation of in vivo antibody responses. I. Antigen-specific T cell help is required to generate a polyclonal IgG1 response in anti-IgD antibody-injected mice |
| 264 | 1 | |c 1992 | |
| 336 | |a Text |b txt |2 rdacontent | ||
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| 500 | |a Date Completed 14.01.1993 | ||
| 500 | |a Date Revised 14.11.2007 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a A system in which injection of mice with an antibody to mouse IgD that they recognize as foreign stimulates a large, T cell-dependent IgG response was used to study whether Ag-specific T cell help is required to stimulate polyclonal (non-Ag-specific) IgG production in vivo. Igha x Ighb allotype heterozygous mice were injected with a conjugate of a foreign Ag coupled to a mAb specific for one of the two IgD allotypes expressed in these mice. This conjugate cross-links mIgD on B cells that express the recognized allotype. These cells process the conjugate and present the foreign Ag to Ag-specific T lymphocytes, which become activated. Thus, B cells of the recognized allotype can be stimulated by cross-linking of their mIgD, Ag-specific T cell help, non-Ag-specific cytokines, and non-Ag-specific contact with activated T cells. In contrast, B cells that express the Igh allotype not recognized by the Ag-anti-IgD antibody conjugate (bystander B cells) can be stimulated in this system only by non-Ag-specific cytokines and non-Ag-specific contact with activated T cells. Although both recognized and bystander B cells in conjugate-injected mice demonstrated substantial increases in size and Ia expression, only the recognized B cells were induced to synthesize DNA and to make a substantial polyclonal Ig response. Bystander B cells still failed to secrete IgG when mice were injected with an anti-IgD-Ag conjugate specific for the other Igh allotype as well as a mAb that cross-linked IgD of the bystander B cell allotype. These observations demonstrate that although non-Ag-specific cytokine and contact-mediated T cell help are sufficient to induce B cells to increase in size and Ia expression in anti-IgD antibody-injected mice, Ag-specific T cell help is required to stimulate the generation of an IgG response in these mice | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, U.S. Gov't, Non-P.H.S. | |
| 650 | 4 | |a Research Support, U.S. Gov't, P.H.S. | |
| 650 | 7 | |a Antibodies, Anti-Idiotypic |2 NLM | |
| 650 | 7 | |a Epitopes |2 NLM | |
| 650 | 7 | |a Histocompatibility Antigens Class II |2 NLM | |
| 650 | 7 | |a Immunoglobulin D |2 NLM | |
| 650 | 7 | |a Immunoglobulin G |2 NLM | |
| 650 | 7 | |a Conalbumin |2 NLM | |
| 650 | 7 | |a 1391-06-6 |2 NLM | |
| 650 | 7 | |a Interleukin-4 |2 NLM | |
| 650 | 7 | |a 207137-56-2 |2 NLM | |
| 700 | 1 | |a Lees, A |e verfasserin |4 aut | |
| 700 | 1 | |a Inman, J |e verfasserin |4 aut | |
| 700 | 1 | |a Finkelman, F D |e verfasserin |4 aut | |
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