Metabolic effects of CCL5 deficiency in lean and obese mice. 2022

Hui Zhou, and Xiyan Liao, and Qin Zeng, and Haowei Zhang, and Jianfeng Song, and Wanyu Hu, and Xiaoxiao Sun, and Yujin Ding, and Dandan Wang, and Yalun Xiao, and Tuo Deng
National Clinical Research Center for Metabolic Diseases, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, China.

Accumulation and activation of immunocytes in adipose tissues are essential to obesity-induced inflammation and insulin resistance. Chemokines are pivotal for the recruitment of immunocytes in adipose tissue during obesity. Chemokine (C-C motif) ligand 5 (CCL5) plays a vital role in the recruitment of immunocytes to sites of inflammation. CCL5 expression level is increased in obese adipose tissue from humans and mice. However, the role of CCL5 in obesity-induced adipose inflammation remains unclear. Our study found that the CCL5 expression level was increased in the epididymal white adipose tissue (eWAT) of obese mice, particularly in CD8+ T cells. CCL5 knockout (KO) mice exhibited better glucose tolerance than wild-type (WT) mice under lean conditions. In contrast, CCL5 KO mice were more insulin resistant and had severe hepatic steatosis than WT mice under obese conditions. Increased T cells in adipose tissue heaven adipose inflammation in obese CCL5 KO mice. The compensatory increased T cell-associated chemokines may account for increased T cell content in the eWAT of obese CCL5 KO mice. These findings imply that CCL5 deficiency exacerbates adipose inflammation and impairs insulin sensitivity in the metabolic tissues of obese mice.

UI MeSH Term Description Entries
D007249 Inflammation A pathological process characterized by injury or destruction of tissues caused by a variety of cytologic and chemical reactions. It is usually manifested by typical signs of pain, heat, redness, swelling, and loss of function. Innate Inflammatory Response,Inflammations,Inflammatory Response, Innate,Innate Inflammatory Responses
D007333 Insulin Resistance Diminished effectiveness of INSULIN in lowering blood sugar levels: requiring the use of 200 units or more of insulin per day to prevent HYPERGLYCEMIA or KETOSIS. Insulin Sensitivity,Resistance, Insulin,Sensitivity, Insulin
D008820 Mice, Obese Mutant mice exhibiting a marked obesity coupled with overeating, hyperglycemia, hyperinsulinemia, marked insulin resistance, and infertility when in a homozygous state. They may be inbred or hybrid. Hyperglycemic Mice,Obese Mice,Mouse, Hyperglycemic,Mouse, Obese,Hyperglycemic Mouse,Mice, Hyperglycemic,Obese Mouse
D009765 Obesity A status with BODY WEIGHT that is grossly above the recommended standards, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D018414 CD8-Positive T-Lymphocytes A critical subpopulation of regulatory T-lymphocytes involved in MHC Class I-restricted interactions. They include both cytotoxic T-lymphocytes (T-LYMPHOCYTES, CYTOTOXIC) and CD8+ suppressor T-lymphocytes. Suppressor T-Lymphocytes, CD8-Positive,T8 Cells,T8 Lymphocytes,CD8-Positive Lymphocytes,Suppressor T-Cells, CD8-Positive,CD8 Positive Lymphocytes,CD8 Positive T Lymphocytes,CD8-Positive Lymphocyte,CD8-Positive Suppressor T-Cell,CD8-Positive Suppressor T-Cells,CD8-Positive Suppressor T-Lymphocyte,CD8-Positive Suppressor T-Lymphocytes,CD8-Positive T-Lymphocyte,Cell, T8,Cells, T8,Lymphocyte, CD8-Positive,Lymphocyte, T8,Lymphocytes, CD8-Positive,Lymphocytes, T8,Suppressor T Cells, CD8 Positive,Suppressor T Lymphocytes, CD8 Positive,Suppressor T-Cell, CD8-Positive,Suppressor T-Lymphocyte, CD8-Positive,T-Cell, CD8-Positive Suppressor,T-Cells, CD8-Positive Suppressor,T-Lymphocyte, CD8-Positive,T-Lymphocyte, CD8-Positive Suppressor,T-Lymphocytes, CD8-Positive,T-Lymphocytes, CD8-Positive Suppressor,T8 Cell,T8 Lymphocyte
D018925 Chemokines Class of pro-inflammatory cytokines that have the ability to attract and activate leukocytes. They can be divided into at least three structural branches: C; (CHEMOKINES, C); CC; (CHEMOKINES, CC); and CXC; (CHEMOKINES, CXC); according to variations in a shared cysteine motif. Chemokine,Chemotactic Cytokine,Chemotactic Cytokines,Cytokines, Chemotactic,Intercrine,Intercrines,Cytokine, Chemotactic
D018946 Chemokine CCL5 A CC-type chemokine that is a chemoattractant for EOSINOPHILS; MONOCYTES; and LYMPHOCYTES. It is a potent and selective eosinophil chemotaxin that is stored in and released from PLATELETS and activated T-LYMPHOCYTES. Chemokine CCL5 is specific for CCR1 RECEPTORS; CCR3 RECEPTORS; and CCR5 RECEPTORS. The acronym RANTES refers to Regulated on Activation, Normal T Expressed and Secreted. CCL5 Chemokine,RANTES,RANTES Protein, T-Cell,CCL5, Chemokine,Chemokine, CCL5,RANTES Protein, T Cell,T-Cell RANTES Protein

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