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Mol Cells. 2014 May;37(5):365-71. doi: 10.14348/molcells.2014.0074. Epub 2014 Apr 30.

Crosstalk between adipocytes and immune cells in adipose tissue inflammation and metabolic dysregulation in obesity.

Author information

1
School of Biological Science, Institute of Molecular Biology and Genetics, Korea.
2
Department of Biophysics and Chemical Biology, Seoul National University, Seoul 151-742, Korea.

Abstract

Recent findings, notably on adipokines and adipose tissue inflammation, have revised the concept of adipose tissues being a mere storage depot for body energy. Instead, adipose tissues are emerging as endocrine and immunologically active organs with multiple effects on the regulation of systemic energy homeostasis. Notably, compared with other metabolic organs such as liver and muscle, various inflammatory responses are dynamically regulated in adipose tissues and most of the immune cells in adipose tissues are involved in obesity-mediated metabolic complications, including insulin resistance. Here, we summarize recent findings on the key roles of innate (neutrophils, macrophages, mast cells, eosinophils) and adaptive (regulatory T cells, type 1 helper T cells, CD8 T cells, B cells) immune cells in adipose tissue inflammation and metabolic dysregulation in obesity. In particular, the roles of natural killer T cells, one type of innate lymphocyte, in adipose tissue inflammation will be discussed. Finally, a new role of adipocytes as antigen presenting cells to modulate T cell activity and subsequent adipose tissue inflammation will be proposed.

PMID:
24781408
PMCID:
PMC4044307
DOI:
10.14348/molcells.2014.0074
[Indexed for MEDLINE]
Free PMC Article

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