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Efficient presentation of myelin oligodendrocyte glycoprotein peptides but not protein by astrocytes from HLA-DR2 and HLA-DR4 transgenic mice.
J Neuroimmunol 2006; 173(1-2):23-34JN

Abstract

The role of astrocytes in the pathogenesis of multiple sclerosis (MS) is not well understood. Astrocytes may modulate the activity of pathogenic T cells by presenting myelin antigens in combination with pro- or anti-inflammatory signals. Astrocytes have been shown to present myelin basic protein (MBP) and proteolipid protein (PLP) to T cells, but it has remained unresolved whether astrocytes present myelin oligodendrocyte glycoprotein (MOG), which has been implicated as an important autoantigen in MS. Here, we asked whether astrocytes presented MOG to T cells. To closer model presentation of human MOG by astrocytes in MS patients, we generated astrocytes from transgenic mice expressing the MS-associated MHC class II alleles HLA-DR2 (DRB1*1501) and HLA-DR4 (DRB1*0401). The results show that IFN-gamma-activated HLA-DR2 and HLA-DR4 expressing astrocytes efficiently presented immunodominant and subdominant MOG peptides to T cells. The hierarchy of the presented MOG epitopes was comparable to that of professional APCs, including dendritic cells and microglia. Importantly, astrocytes were poor at processing and presenting native MOG protein. Furthermore, astrocytes induced a mixed Th1/Th2 cytokine response in MOG-specific T cells, whereas dendritic cells induced a predominantly Th1 cell response. Collectively, the results suggest that astrocytes may modulate anti-MOG T cell responses in the CNS.

Authors+Show Affiliations

Institute of Pathology, School of Medicine, Case Western Reserve University, Cleveland, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16386804

Citation

Kort, Jens J., et al. "Efficient Presentation of Myelin Oligodendrocyte Glycoprotein Peptides but Not Protein By Astrocytes From HLA-DR2 and HLA-DR4 Transgenic Mice." Journal of Neuroimmunology, vol. 173, no. 1-2, 2006, pp. 23-34.
Kort JJ, Kawamura K, Fugger L, et al. Efficient presentation of myelin oligodendrocyte glycoprotein peptides but not protein by astrocytes from HLA-DR2 and HLA-DR4 transgenic mice. J Neuroimmunol. 2006;173(1-2):23-34.
Kort, J. J., Kawamura, K., Fugger, L., Weissert, R., & Forsthuber, T. G. (2006). Efficient presentation of myelin oligodendrocyte glycoprotein peptides but not protein by astrocytes from HLA-DR2 and HLA-DR4 transgenic mice. Journal of Neuroimmunology, 173(1-2), pp. 23-34.
Kort JJ, et al. Efficient Presentation of Myelin Oligodendrocyte Glycoprotein Peptides but Not Protein By Astrocytes From HLA-DR2 and HLA-DR4 Transgenic Mice. J Neuroimmunol. 2006;173(1-2):23-34. PubMed PMID: 16386804.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Efficient presentation of myelin oligodendrocyte glycoprotein peptides but not protein by astrocytes from HLA-DR2 and HLA-DR4 transgenic mice. AU - Kort,Jens J, AU - Kawamura,Kazuyuki, AU - Fugger,Lars, AU - Weissert,Robert, AU - Forsthuber,Thomas G, Y1 - 2006/01/04/ PY - 2005/10/11/received PY - 2005/11/16/accepted PY - 2006/1/3/pubmed PY - 2006/5/27/medline PY - 2006/1/3/entrez SP - 23 EP - 34 JF - Journal of neuroimmunology JO - J. Neuroimmunol. VL - 173 IS - 1-2 N2 - The role of astrocytes in the pathogenesis of multiple sclerosis (MS) is not well understood. Astrocytes may modulate the activity of pathogenic T cells by presenting myelin antigens in combination with pro- or anti-inflammatory signals. Astrocytes have been shown to present myelin basic protein (MBP) and proteolipid protein (PLP) to T cells, but it has remained unresolved whether astrocytes present myelin oligodendrocyte glycoprotein (MOG), which has been implicated as an important autoantigen in MS. Here, we asked whether astrocytes presented MOG to T cells. To closer model presentation of human MOG by astrocytes in MS patients, we generated astrocytes from transgenic mice expressing the MS-associated MHC class II alleles HLA-DR2 (DRB1*1501) and HLA-DR4 (DRB1*0401). The results show that IFN-gamma-activated HLA-DR2 and HLA-DR4 expressing astrocytes efficiently presented immunodominant and subdominant MOG peptides to T cells. The hierarchy of the presented MOG epitopes was comparable to that of professional APCs, including dendritic cells and microglia. Importantly, astrocytes were poor at processing and presenting native MOG protein. Furthermore, astrocytes induced a mixed Th1/Th2 cytokine response in MOG-specific T cells, whereas dendritic cells induced a predominantly Th1 cell response. Collectively, the results suggest that astrocytes may modulate anti-MOG T cell responses in the CNS. SN - 0165-5728 UR - https://www.unboundmedicine.com/medline/citation/16386804/Efficient_presentation_of_myelin_oligodendrocyte_glycoprotein_peptides_but_not_protein_by_astrocytes_from_HLA_DR2_and_HLA_DR4_transgenic_mice_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0165-5728(05)00499-6 DB - PRIME DP - Unbound Medicine ER -