Study on the levels of CD19+CD5+CD1dhigh B10 cells in NOD mice
10.3760/cma.j.issn.0254-5101.2014.11.004
- VernacularTitle:非肥胖性糖尿病（NOD）小鼠糖尿病发病过程中 B10细胞水平的研究
- Author:
Ruimei JIANG
;
Yao QIN
;
Xinyu XU
;
Heng CHEN
;
Tao YANG
;
Mei ZHANG
- Publication Type:Journal Article
- Keywords:
Regulatory B cells;
Type 1 diabetes;
Th1 cells;
Th17 cells;
Regulatory T cells
- From:
Chinese Journal of Microbiology and Immunology
2014;(11):830-838
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the alterations of CD19+CD5+CD1dhigh B, Th1 and Th17 cells in non-obese diabetic ( NOD) mice and the correlation between B10 cells and type 1 diabetes in NOD mice. Methods Flow cytometry ( FCM) was used to measure the levels of CD19+CD5+CD1dhigh B, CD19+IL-10+B, CD4+IFN-γ+Th1, CD4+IL-17+Th17 and CD4+CD25+Foxp3+T cells in NOD mice ( 4 weeks old NOD mice:group A, n=10;8 weeks old NOD mice:group B, n=10; NOD mice with diabetes: group C, n=10) and age-matched C57BL/6 mice ( control group, n=20 ) .Hematoxylin-eosin staining of pancreatic tissues was performed for histopathological assessment of the development of insulitis in NOD mice.Results (1) Histopathological analysis showed that mice from A, B and C groups respectively showed no insulitis, insulitis and obvious insulitis with no intact islets.(2) The highest levels of B10 cells in NOD mice were ob-served in group B, followed by those in group C and group A (P<0.01).No significant differences with the levels of B10 cells were found among different tissues of 4 weeks old NOD mice (P>0.05).More B10 cells were detected in pancreatic lymph nodes than in other tissues of 8 weeks old NOD mice, the levels of which were also higher than those in pancreatic lymph nodes of mice form group C ( P<0.01) .The highest levels of B10 cells were detected in peripheral lymph nodes among all tissues samples collected from NOD mice with diabetes (P<0.01).(3) The levels of Th1 and Th17 cells in mice from group C were remarkably in-creased as compared with those in mice from group A and B (P<0.01).(4) The percentages of CD4+CD25+Foxp3+T cells in mice from group C showed no differences with those in mice from A and B groups. No significant difference with Treg cells were observed between NOD mice and age-matched C57BL/6 mice (P>0.05).Conclusion The percentages and distribution of B10 cells in NOD mice changed with age and the development of insulitis.The decrease of B10 cells might participate in the development of type 1 diabe-tes in NOD mice.
