Contribution of both B-cell intrinsic alterations as well as non-hematopoietic-derived factors in the enhanced immune response of the NOD mouse
The underlying cellular and molecular mechanism for the development of Type 1 diabetes is still to be fully revealed. We have previously demonstrated that the NOD mouse, a model for Type 1 diabetes, display a prolonged and enhanced immune response to both self and non-self-antigens. The molecular ex...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2017-08-01
|
| Series: | Autoimmunity |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/08916934.2017.1344977 |
| _version_ | 1797684765988487168 |
|---|---|
| author | Viqar Showkat Banday Radha Thyagarajan Kristina Lejon |
| author_facet | Viqar Showkat Banday Radha Thyagarajan Kristina Lejon |
| author_sort | Viqar Showkat Banday |
| collection | DOAJ |
| description | The underlying cellular and molecular mechanism for the development of Type 1 diabetes is still to be fully revealed. We have previously demonstrated that the NOD mouse, a model for Type 1 diabetes, display a prolonged and enhanced immune response to both self and non-self-antigens. The molecular explanation for this defect however, has not been determined. In this study we immunized NOD and C57BL/6 (B6) with the conventional antigen i.e. hen egg lysozyme (HEL) and analyzed B cell activation, germinal center reaction and antibody clearance. Corroborating our previous observations NOD mice responded robustly to a single immunization of HEL. Immunofluorescence analysis of the spleen revealed an increased number of germinal centers in unimmunized NOD compared to B6. However, post immunization germinal center numbers were similar in NOD and B6. NOD mice showed lower response to BCR stimulation with anti-IgM, in particular at lower concentrations of anti-IgM. Antibody clearance in vivo did not differ between the strains. To determine the cell type that is responsible for the prolonged and enhance immune response, we reconstituted NOD-RAGs with cells from primed donors in different combinations. NOD B cells were required to reproduce the phenotype; however the non-lymphoid compartment of NOD origin also played a role. Based on our results we propose that preexisting GCs in the NOD promote the robust response and alteration in the BCR signaling could promote survival of stimulated cells. Overall, this mechanism could in turn also contribute to the activation and maintenance of autoreactive B cells in the NOD mouse. |
| first_indexed | 2024-03-12T00:34:32Z |
| format | Article |
| id | doaj.art-d272106a59924511b83ac030a2b0d8ea |
| institution | Directory Open Access Journal |
| issn | 0891-6934 1607-842X |
| language | English |
| last_indexed | 2024-03-12T00:34:32Z |
| publishDate | 2017-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Autoimmunity |
| spelling | doaj.art-d272106a59924511b83ac030a2b0d8ea2023-09-15T10:01:07ZengTaylor & Francis GroupAutoimmunity0891-69341607-842X2017-08-0150636336910.1080/08916934.2017.13449771344977Contribution of both B-cell intrinsic alterations as well as non-hematopoietic-derived factors in the enhanced immune response of the NOD mouseViqar Showkat Banday0Radha Thyagarajan1Kristina Lejon2Umeå UniversityUmeå UniversityUmeå UniversityThe underlying cellular and molecular mechanism for the development of Type 1 diabetes is still to be fully revealed. We have previously demonstrated that the NOD mouse, a model for Type 1 diabetes, display a prolonged and enhanced immune response to both self and non-self-antigens. The molecular explanation for this defect however, has not been determined. In this study we immunized NOD and C57BL/6 (B6) with the conventional antigen i.e. hen egg lysozyme (HEL) and analyzed B cell activation, germinal center reaction and antibody clearance. Corroborating our previous observations NOD mice responded robustly to a single immunization of HEL. Immunofluorescence analysis of the spleen revealed an increased number of germinal centers in unimmunized NOD compared to B6. However, post immunization germinal center numbers were similar in NOD and B6. NOD mice showed lower response to BCR stimulation with anti-IgM, in particular at lower concentrations of anti-IgM. Antibody clearance in vivo did not differ between the strains. To determine the cell type that is responsible for the prolonged and enhance immune response, we reconstituted NOD-RAGs with cells from primed donors in different combinations. NOD B cells were required to reproduce the phenotype; however the non-lymphoid compartment of NOD origin also played a role. Based on our results we propose that preexisting GCs in the NOD promote the robust response and alteration in the BCR signaling could promote survival of stimulated cells. Overall, this mechanism could in turn also contribute to the activation and maintenance of autoreactive B cells in the NOD mouse.http://dx.doi.org/10.1080/08916934.2017.1344977type 1 diabetesimmune responsenod mouseb lymphocyteshen egg lysozyme |
| spellingShingle | Viqar Showkat Banday Radha Thyagarajan Kristina Lejon Contribution of both B-cell intrinsic alterations as well as non-hematopoietic-derived factors in the enhanced immune response of the NOD mouse Autoimmunity type 1 diabetes immune response nod mouse b lymphocytes hen egg lysozyme |
| title | Contribution of both B-cell intrinsic alterations as well as non-hematopoietic-derived factors in the enhanced immune response of the NOD mouse |
| title_full | Contribution of both B-cell intrinsic alterations as well as non-hematopoietic-derived factors in the enhanced immune response of the NOD mouse |
| title_fullStr | Contribution of both B-cell intrinsic alterations as well as non-hematopoietic-derived factors in the enhanced immune response of the NOD mouse |
| title_full_unstemmed | Contribution of both B-cell intrinsic alterations as well as non-hematopoietic-derived factors in the enhanced immune response of the NOD mouse |
| title_short | Contribution of both B-cell intrinsic alterations as well as non-hematopoietic-derived factors in the enhanced immune response of the NOD mouse |
| title_sort | contribution of both b cell intrinsic alterations as well as non hematopoietic derived factors in the enhanced immune response of the nod mouse |
| topic | type 1 diabetes immune response nod mouse b lymphocytes hen egg lysozyme |
| url | http://dx.doi.org/10.1080/08916934.2017.1344977 |
| work_keys_str_mv | AT viqarshowkatbanday contributionofbothbcellintrinsicalterationsaswellasnonhematopoieticderivedfactorsintheenhancedimmuneresponseofthenodmouse AT radhathyagarajan contributionofbothbcellintrinsicalterationsaswellasnonhematopoieticderivedfactorsintheenhancedimmuneresponseofthenodmouse AT kristinalejon contributionofbothbcellintrinsicalterationsaswellasnonhematopoieticderivedfactorsintheenhancedimmuneresponseofthenodmouse |