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Decreased Splenic CD4(+) T-Lymphocytes in Apolipoprotein M Gene Deficient Mice

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Author

  • Zhigang Wang
  • Guanghua Luo
  • Yuehua Feng
  • Lu Zheng
  • Hongyao Liu
  • Yun Liang
  • Zhonghua Liu
  • Peng Shao
  • Maria Berggren Söderlund
  • Xiaoying Zhang
  • Ning Xu
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Summary, in English

Spleen T-lymphocytes, especially CD4(+) T-cells, have been demonstrated to be involved in broad immunomodulation and host-defense activity in vivo. Apolipoprotein M gene (apoM) may have an important role in the regulation of immunoprocess and inflammation, which could be hypothesized to the apoM containing sphingosine-1-phosphate (S1P). In the present study we demonstrate that the splenic CD4(+) T-lymphocytes were obviously decreased in the apoM gene deficient (apoM(-/-)) mice compared to the wild type (apoM(+/+)). Moreover, these mice were treated with lipopolysaccharide (LPS) and it was found that even more pronounced decreasing CD4(+) T-lymphocytes occurred in the spleen compared to the apoM(+/+) mice. The similar phenomena were found in the ratio of CD4(+)/CD8(+) T-lymphocytes. After administration of LPS, the hepatic mRNA levels of tumor necrosis factor-alpha (TNF-alpha) and monocyte chemotactic protein-1 (MCP-1) were markedly increased; however, there were no statistical differences observed between apoM(+/+) mice and apoM(-/-) mice. The present study demonstrated that apoM might facilitate the maintenance of CD4(+) T-lymphocytes or could modify the T-lymphocytes subgroups in murine spleen, which may further explore the importance of apoM in the regulation of the host immunomodulation, although the detailed mechanism needs continuing investigation.

Publishing year

2015

Language

English

Publication/Series

BioMed Research International

Document type

Journal article

Publisher

Hindawi Limited

Topic

  • Immunology in the medical area

Status

Published

ISBN/ISSN/Other

  • ISSN: 2314-6133