Abstract
The process of antigen recognition depends in part on the amount of peptide antigen available and the affinity of the T cell receptor for a particular peptide-major histocompatibility complex (MHC) molecule complex. The availability of self antigen is limited by antigen processing, which is compartmentalized such that peptide antigens presented by MHC class I molecules originate in the cytoplasm, whereas peptide antigens presented by MHC class II molecules are acquired from the endocytic pathway. This segregation of the antigen-processing pathways may limit the diversity of antigens that influence the development and selection of, e.g., CD4-positive, MHC class II-specific T cells. Selection in this case might involve only a subset of self- encoded proteins, specifically those that are plasma membrane bound or secreted. To study these aspects of immune development, we engineered pigeon cytochrome for expression in transgenic mice in two forms: one in which it was expressed as a type II plasma membrane protein, and a second in which it was targeted to the mitochondria after cytoplasmic synthesis. Experiments with these mice clearly show that tolerance is induced in the thymus, irrespective of antigen compartmentation. Using radiation bone marrow chimeras, we further show that cytoplasmic/mitochondrial antigen gains access to the MHC class II pathway by direct presentation. As a result of studying the anatomy of the thymus, we show that the amount of antigen and the affinity of the TCR affect the location and time point of thymocytes under-going apoptosis.
Full Text
The Full Text of this article is available as a PDF (3.3 MB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Brodsky F. M., Guagliardi L. E. The cell biology of antigen processing and presentation. Annu Rev Immunol. 1991;9:707–744. doi: 10.1146/annurev.iy.09.040191.003423. [DOI] [PubMed] [Google Scholar]
- Brooks A. G., McCluskey J. Class II-restricted presentation of a hen egg lysozyme determinant derived from endogenous antigen sequestered in the cytoplasm or endoplasmic reticulum of the antigen presenting cells. J Immunol. 1993 May 1;150(9):3690–3697. [PubMed] [Google Scholar]
- Chen B. P., Madrigal A., Parham P. Cytotoxic T cell recognition of an endogenous class I HLA peptide presented by a class II HLA molecule. J Exp Med. 1990 Sep 1;172(3):779–788. doi: 10.1084/jem.172.3.779. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dunn W. A., Jr Studies on the mechanisms of autophagy: formation of the autophagic vacuole. J Cell Biol. 1990 Jun;110(6):1923–1933. doi: 10.1083/jcb.110.6.1923. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dunn W. A., Jr Studies on the mechanisms of autophagy: maturation of the autophagic vacuole. J Cell Biol. 1990 Jun;110(6):1935–1945. doi: 10.1083/jcb.110.6.1935. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Feng L., Xia Y., Yoshimura T., Wilson C. B. Modulation of neutrophil influx in glomerulonephritis in the rat with anti-macrophage inflammatory protein-2 (MIP-2) antibody. J Clin Invest. 1995 Mar;95(3):1009–1017. doi: 10.1172/JCI117745. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Foy T. M., Page D. M., Waldschmidt T. J., Schoneveld A., Laman J. D., Masters S. R., Tygrett L., Ledbetter J. A., Aruffo A., Claassen E. An essential role for gp39, the ligand for CD40, in thymic selection. J Exp Med. 1995 Nov 1;182(5):1377–1388. doi: 10.1084/jem.182.5.1377. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gordon S., Fraser I., Nath D., Hughes D., Clarke S. Macrophages in tissues and in vitro. Curr Opin Immunol. 1992 Feb;4(1):25–32. doi: 10.1016/0952-7915(92)90119-y. [DOI] [PubMed] [Google Scholar]
- Heynen M. J., Tricot G., Verwilghen R. L. Autophagy of mitochondria in rat bone marrow erythroid cells. Relation to nuclear extrusion. Cell Tissue Res. 1985;239(1):235–239. doi: 10.1007/BF00214924. [DOI] [PubMed] [Google Scholar]
- Hickey D. R., Jayaraman K., Goodhue C. T., Shah J., Fingar S. A., Clements J. M., Hosokawa Y., Tsunasawa S., Sherman F. Synthesis and expression of genes encoding tuna, pigeon, and horse cytochromes c in the yeast Saccharomyces cerevisiae. Gene. 1991 Aug 30;105(1):73–81. doi: 10.1016/0378-1119(91)90515-d. [DOI] [PubMed] [Google Scholar]
- Hunt D. F., Michel H., Dickinson T. A., Shabanowitz J., Cox A. L., Sakaguchi K., Appella E., Grey H. M., Sette A. Peptides presented to the immune system by the murine class II major histocompatibility complex molecule I-Ad. Science. 1992 Jun 26;256(5065):1817–1820. doi: 10.1126/science.1319610. [DOI] [PubMed] [Google Scholar]
- Jaraquemada D., Marti M., Long E. O. An endogenous processing pathway in vaccinia virus-infected cells for presentation of cytoplasmic antigens to class II-restricted T cells. J Exp Med. 1990 Sep 1;172(3):947–954. doi: 10.1084/jem.172.3.947. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jayaraman S., Luo Y., Dorf M. E. Tolerance induction in T helper (Th1) cells by thymic macrophages. J Immunol. 1992 May 1;148(9):2672–2681. [PubMed] [Google Scholar]
- Kaye J., Hsu M. L., Sauron M. E., Jameson S. C., Gascoigne N. R., Hedrick S. M. Selective development of CD4+ T cells in transgenic mice expressing a class II MHC-restricted antigen receptor. Nature. 1989 Oct 26;341(6244):746–749. doi: 10.1038/341746a0. [DOI] [PubMed] [Google Scholar]
- Kaye J., Vasquez N. J., Hedrick S. M. Involvement of the same region of the T cell antigen receptor in thymic selection and foreign peptide recognition. J Immunol. 1992 Jun 1;148(11):3342–3353. [PubMed] [Google Scholar]
- Knecht E., Martinez-Ramón A., Grisolia S. Autophagy of mitochondria in rat liver assessed by immunogold procedures. J Histochem Cytochem. 1988 Nov;36(11):1433–1440. doi: 10.1177/36.11.3171166. [DOI] [PubMed] [Google Scholar]
- Kyewski B. A., Fathman C. G., Kaplan H. S. Intrathymic presentation of circulating non-major histocompatibility complex antigens. Nature. 1984 Mar 8;308(5955):196–199. doi: 10.1038/308196a0. [DOI] [PubMed] [Google Scholar]
- Kyewski B. A., Rouse R. V., Kaplan H. S. Thymocyte rosettes: multicellular complexes of lymphocytes and bone marrow-derived stromal cells in the mouse thymus. Proc Natl Acad Sci U S A. 1982 Sep;79(18):5646–5650. doi: 10.1073/pnas.79.18.5646. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lo D., Sprent J. Identity of cells that imprint H-2-restricted T-cell specificity in the thymus. Nature. 1986 Feb 20;319(6055):672–675. doi: 10.1038/319672a0. [DOI] [PubMed] [Google Scholar]
- Loss G. E., Jr, Elias C. G., Fields P. E., Ribaudo R. K., McKisic M., Sant A. J. Major histocompatibility complex class II-restricted presentation of an internally synthesized antigen displays cell-type variability and segregates from the exogenous class II and endogenous class I presentation pathways. J Exp Med. 1993 Jul 1;178(1):73–85. doi: 10.1084/jem.178.1.73. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Malnati M. S., Marti M., LaVaute T., Jaraquemada D., Biddison W., DeMars R., Long E. O. Processing pathways for presentation of cytosolic antigen to MHC class II-restricted T cells. Nature. 1992 Jun 25;357(6380):702–704. doi: 10.1038/357702a0. [DOI] [PubMed] [Google Scholar]
- Marrack P., Lo D., Brinster R., Palmiter R., Burkly L., Flavell R. H., Kappler J. The effect of thymus environment on T cell development and tolerance. Cell. 1988 May 20;53(4):627–634. doi: 10.1016/0092-8674(88)90578-8. [DOI] [PubMed] [Google Scholar]
- Müller K. P., Schumacher J., Kyewski B. A. Half-life of antigen/major histocompatibility complex class II complexes in vivo: intra- and interorgan variations. Eur J Immunol. 1993 Dec;23(12):3203–3207. doi: 10.1002/eji.1830231224. [DOI] [PubMed] [Google Scholar]
- Neefjes J. J., Ploegh H. L. Intracellular transport of MHC class II molecules. Immunol Today. 1992 May;13(5):179–184. doi: 10.1016/0167-5699(92)90123-O. [DOI] [PubMed] [Google Scholar]
- Nuchtern J. G., Biddison W. E., Klausner R. D. Class II MHC molecules can use the endogenous pathway of antigen presentation. Nature. 1990 Jan 4;343(6253):74–76. doi: 10.1038/343074a0. [DOI] [PubMed] [Google Scholar]
- Nye S. H., Scarpulla R. C. Mitochondrial targeting of yeast apoiso-1-cytochrome c is mediated through functionally independent structural domains. Mol Cell Biol. 1990 Nov;10(11):5763–5771. doi: 10.1128/mcb.10.11.5763. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Pullen A. M., Marrack P., Kappler J. W. The T-cell repertoire is heavily influenced by tolerance to polymorphic self-antigens. Nature. 1988 Oct 27;335(6193):796–801. doi: 10.1038/335796a0. [DOI] [PubMed] [Google Scholar]
- Ramsdell F., Fowlkes B. J. Clonal deletion versus clonal anergy: the role of the thymus in inducing self tolerance. Science. 1990 Jun 15;248(4961):1342–1348. doi: 10.1126/science.1972593. [DOI] [PubMed] [Google Scholar]
- Rudensky AYu, Preston-Hurlburt P., Hong S. C., Barlow A., Janeway C. A., Jr Sequence analysis of peptides bound to MHC class II molecules. Nature. 1991 Oct 17;353(6345):622–627. doi: 10.1038/353622a0. [DOI] [PubMed] [Google Scholar]
- Rudensky A. Y., Mazel S. M., Yurin V. L. Presentation of endogenous immunoglobulin determinant to immunoglobulin-recognizing T cell clones by the thymic cells. Eur J Immunol. 1990 Oct;20(10):2235–2239. doi: 10.1002/eji.1830201012. [DOI] [PubMed] [Google Scholar]
- Savill J., Fadok V., Henson P., Haslett C. Phagocyte recognition of cells undergoing apoptosis. Immunol Today. 1993 Mar;14(3):131–136. doi: 10.1016/0167-5699(93)90215-7. [DOI] [PubMed] [Google Scholar]
- Sprent J., Webb S. R. Function and specificity of T cell subsets in the mouse. Adv Immunol. 1987;41:39–133. doi: 10.1016/s0065-2776(08)60030-9. [DOI] [PubMed] [Google Scholar]
- Stockinger B., Hausmann B. Functional recognition of in vivo processed self antigen. Int Immunol. 1994 Feb;6(2):247–254. doi: 10.1093/intimm/6.2.247. [DOI] [PubMed] [Google Scholar]
- Stuart R. A., Nicholson D. W., Wienhues U., Neupert W. Import of apocytochrome c into the mitochondrial intermembrane space along a cytochrome c1 sorting pathway. J Biol Chem. 1990 Nov 25;265(33):20210–20219. [PubMed] [Google Scholar]
- Surh C. D., Sprent J. T-cell apoptosis detected in situ during positive and negative selection in the thymus. Nature. 1994 Nov 3;372(6501):100–103. doi: 10.1038/372100a0. [DOI] [PubMed] [Google Scholar]
- Weiss S., Bogen B. MHC class II-restricted presentation of intracellular antigen. Cell. 1991 Feb 22;64(4):767–776. doi: 10.1016/0092-8674(91)90506-t. [DOI] [PubMed] [Google Scholar]
- von Boehmer H. Developmental biology of T cells in T cell-receptor transgenic mice. Annu Rev Immunol. 1990;8:531–556. doi: 10.1146/annurev.iy.08.040190.002531. [DOI] [PubMed] [Google Scholar]