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Zhou P, Chen J, Li HH, Sun J, Gao SX, Zheng QW, Wei L, Jiang CY, Guan JC. Exposure of pregnant rats to staphylococcal enterotoxin B attenuates the response of increased Tregs to re-exposure to SEB in the thymus of adult offspring. Microb Pathog 2020; 145:104225. [PMID: 32353581 DOI: 10.1016/j.micpath.2020.104225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/06/2020] [Accepted: 04/20/2020] [Indexed: 11/17/2022]
Abstract
Regulatory T cells (Tregs) play an essential role during homeostasis and tolerance of the immune system. Based on our previous study that exposure of pregnant rats to staphylococcal enterotoxin B (SEB) can alter the percentage of CD4/CD8 subsets in the thymus of the offspring, in this study, we focus on the influence of exposure of pregnant rats to SEB on number, function and response of Tregs in the thymus of the offspring. Pregnant rats at gestational day of 16 were intravenously injected with 15 μg SEB and the thymuses of the neonatal and adult offspring were harvested for this study. We found that exposure of pregnant rats to SEB could significantly increase the absolute number of Tregs and the FoxP3 expression level in the thymus of not only neonatal but also adult offspring. Re-exposure of adult offspring to SEB remarkably reduced the suppressive capacity of Tregs to CD4+ T cells and the expression levels of TGF-β and IL-10 in the thymus, but had no effect on production of IL-4 and IFN-γ. Furthermore, it also notedly decreased the absolute number of Tregs and the FoxP3 expression level. These data suggest that prenatal exposure of pregnant rats to SEB attenuates the response of increased Tregs to re-exposure to SEB in the thymus of adult offspring.
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Affiliation(s)
- Ping Zhou
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui, 233030, PR China; Department of Microbiology, Bengbu Medical College, Bengbu, Anhui, 233030, PR China
| | - Jie Chen
- Department of Cardiology, Jiande Branch, Second Affiliated Hospital, Zhejiang University School of Medicine, Jiande, 311600, PR China
| | - Hui-Hui Li
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui, 233030, PR China
| | - Jing Sun
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui, 233030, PR China
| | - Shu-Xian Gao
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui, 233030, PR China; Department of Microbiology, Bengbu Medical College, Bengbu, Anhui, 233030, PR China
| | - Qing-Wei Zheng
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui, 233030, PR China
| | - Li Wei
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui, 233030, PR China
| | - Cheng-Yi Jiang
- Department of Otolaryngology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233033, PR China
| | - Jun-Chang Guan
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui, 233030, PR China; Department of Microbiology, Bengbu Medical College, Bengbu, Anhui, 233030, PR China.
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Zhou P, Zhang XS, Xu ZB, Gao SX, Zheng QW, Xu MZ, Shen L, Yu F, Guan JC. Staphylococcal enterotoxin B administration in pregnant rats alters the splenic lymphocyte response in adult offspring rats. BMC Microbiol 2017; 17:1. [PMID: 28049431 PMCID: PMC5210265 DOI: 10.1186/s12866-016-0921-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 12/22/2016] [Indexed: 01/07/2023] Open
Abstract
Background Our previous study suggested that SEB exposure in pregnant rats could lead to the change of T cells subpopulation in both peripheral blood and thymus of the offspring rats. However, rarely is known about the influence of SEB exposure in pregnant rats on T cell subpopulation in the spleens of offspring rats. Results SEB was intravenously administered to the pregnant rats at gestational day 16 in this study. The percentages, in vivo and in vitro responses of CD4 and CD8 T cells were investigated with flow cytometry. The prenatal SEB exposure obviously increased splenic CD4 T cell percentages of both neonates and adult offspring rats, and obviously reduced splenic CD8 T cell percentages of both the fifth day neonates and adult offspring rats. After spleens in the adult offspring rats were re-stimulated with SEB in vivo or in vitro, in vivo SEB stimulation could lead to the marked decrease of splenic CD4 T cell percentage and the marked increase of splenic CD8 T cell percentage. While in vitro SEB stimulation to the cultured splenocytes markedly decreased the proliferation of the splenic lymphocytes and the CD4 T cell percentage, and had no influence on CD8 T cell percentage. Conclusion The prenatal SEB exposure could alter the percentages of CD4/CD8 T cell subpopulation and the response of CD4 and CD8 T cells to the in vivo and in vitro secondary SEB stimulation in the splenocytes of adult offspring rats.
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Affiliation(s)
- Ping Zhou
- Department of Microbiology and Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, 2600 Dong Hai Avenue, Bengbu, Anhui, 233030, People's Republic of China
| | - Xin-Sheng Zhang
- Editorial Board of Journal of Bengbu Medical College, Bengbu Medical College, Bengbu, Anhui, 233030, People's Republic of China
| | - Zhi-Ben Xu
- Department of Microbiology and Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, 2600 Dong Hai Avenue, Bengbu, Anhui, 233030, People's Republic of China
| | - Shu-Xian Gao
- Department of Microbiology and Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, 2600 Dong Hai Avenue, Bengbu, Anhui, 233030, People's Republic of China
| | - Qing-Wei Zheng
- Department of Microbiology and Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, 2600 Dong Hai Avenue, Bengbu, Anhui, 233030, People's Republic of China
| | - Ming-Zhu Xu
- Department of Life Sciences, Bengbu Medical College, Bengbu, Anhui, 233030, People's Republic of China
| | - Lin Shen
- Scientific Research Center, Bengbu Medical College, Bengbu, Anhui, 233030, People's Republic of China
| | - Feng Yu
- Huzhou University Schools of Medicine and Nursing Science, Huzhou, Zhejiang, 313000, People's Republic of China
| | - Jun-Chang Guan
- Department of Microbiology and Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, 2600 Dong Hai Avenue, Bengbu, Anhui, 233030, People's Republic of China.
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Zhang T, Yu FL, Yang WX, Ruan MM, Yue ZY, Liu Y, Liu TT, Zhou P, Xia H, Guan JC. Staphylococcal enterotoxin B administration during pregnancy imprints the increased CD4:CD8 T-cell ratio in the peripheral blood from neonatal to adult offspring rats. J Med Microbiol 2014; 64:1-6. [PMID: 25381147 DOI: 10.1099/jmm.0.082438-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Our previous study demonstrated that Staphylococcal enterotoxin B (SEB) administration during pregnancy could alter the percentage of T cells subpopulation in the thymus of the neonatal rats; however, little is known about the effect of maternal SEB administration during pregnancy on T cells subpopulation in the peripheral blood of the offspring rats. In the present study, pregnant rats at gestational day 16 were intravenously injected with 15 µg SEB. The present study found that prenatal exposure to SEB significantly decreased the percentages of CD8 T cells in the peripheral blood of both neonatal rats on the fifth day after delivery and the adult offspring rats. Furthermore, it significantly increased the percentage of CD4 T cells as well as the ratios of CD4 to CD8 T cells in both neonatal and adult offspring rats. Prenatal exposure to SEB significantly decreased the expression levels of IL-4 and IFN-γ in the plasma of neonatal and adult offspring rats. Furthermore, SEB restimulation significantly increased the percentage of CD8 T cells and significantly decreased the percentage of CD4 T cells. These data suggest the prenatal exposure to SEB can imprint the increased CD4:CD8 T cell ratio in the peripheral blood from the neonate to adulthood through the decreased CD8 T cells and the increased CD4 T cells, and altered the response characteristics of CD4 and CD8 T cells to secondary SEB administration in the peripheral blood of the adult offspring rats.
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Affiliation(s)
- Tao Zhang
- Department of Microbiology, Bengbu Medical College, Bengbu, Anhui 233030, PR China
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Feng-Ling Yu
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Wen-Xuan Yang
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Miao-Miao Ruan
- Department of Life Sciences, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Zhi-Yuan Yue
- Department of Life Sciences, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Yong Liu
- Department of Microbiology, Bengbu Medical College, Bengbu, Anhui 233030, PR China
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Ting-Ting Liu
- Department of Microbiology, Bengbu Medical College, Bengbu, Anhui 233030, PR China
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Ping Zhou
- Department of Microbiology, Bengbu Medical College, Bengbu, Anhui 233030, PR China
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Hui Xia
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Jun-Chang Guan
- Department of Microbiology, Bengbu Medical College, Bengbu, Anhui 233030, PR China
- Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, Anhui 233030, PR China
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