Siranart Jeerawattanawart1,2, Pilaiwan Siripurkpong1, Sittiruk Roytrakul3, Pornpimon Angkasekwinai4. 1. Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, 12120, Thailand. 2. Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, 12120, Thailand. 3. Functional Proteomics Technology Laboratory, Functional Ingredients and Food Innovation Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathumthani, 12120, Thailand. 4. Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, 12120, Thailand. upornpim@tu.ac.th.
Abstract
OBJECTIVE: This study aimed to investigate the direct role of IL-25 in modulating adipocyte function during homeostasis and low-grade inflammation induced by lipopolysaccharide (LPS). METHODS: The 3T3-L1 preadipocyte cell lines and primary cultures of adipose-derived stromal vascular precursor cells of wild-type and IL-17RB-deficient mice were used to determine the direct function of IL-25. The expression of IL-17RB in differentiating adipocyte was determined using real-time PCR and flow cytometry analysis. The effect of IL-25 on lipid accumulation, triglyceride content, lipolysis, glucose uptake, and adipokine expression in the mature adipocytes was evaluated. IL-25 modulating the expression of inflammatory cytokines in adipocytes induced by low dose LPS was determined using real-time PCR and ELISA. RESULTS: The receptor for IL-25 was up-regulated during adipocyte differentiation and IL-25 directly modulated adipocyte function by reducing lipid accumulation and triglyceride concentration and enhancing lipolysis without affecting an insulin-stimulated glucose uptake. Interestingly, IL-25 induced adiponectin secretion through the PI3K/AKT signaling pathway. In 3T3-L1 adipocytes under low-grade inflammation, IL-25 attenuated the expression of IL-6 and CCL5 through the induction of adiponectin. CONCLUSION: Our studies suggest that IL-25 directly regulates adipocyte function by maintaining the adiponectin level during homeostasis and by alleviating inflammatory response through the regulation of adiponectin during low-grade inflammation in adipocytes.
OBJECTIVE: This study aimed to investigate the direct role of IL-25 in modulating adipocyte function during homeostasis and low-grade inflammation induced by lipopolysaccharide (LPS). METHODS: The 3T3-L1 preadipocyte cell lines and primary cultures of adipose-derived stromal vascular precursor cells of wild-type and IL-17RB-deficient mice were used to determine the direct function of IL-25. The expression of IL-17RB in differentiating adipocyte was determined using real-time PCR and flow cytometry analysis. The effect of IL-25 on lipid accumulation, triglyceride content, lipolysis, glucose uptake, and adipokine expression in the mature adipocytes was evaluated. IL-25 modulating the expression of inflammatory cytokines in adipocytes induced by low dose LPS was determined using real-time PCR and ELISA. RESULTS: The receptor for IL-25 was up-regulated during adipocyte differentiation and IL-25 directly modulated adipocyte function by reducing lipid accumulation and triglyceride concentration and enhancing lipolysis without affecting an insulin-stimulated glucose uptake. Interestingly, IL-25 induced adiponectin secretion through the PI3K/AKT signaling pathway. In 3T3-L1 adipocytes under low-grade inflammation, IL-25 attenuated the expression of IL-6 and CCL5 through the induction of adiponectin. CONCLUSION: Our studies suggest that IL-25 directly regulates adipocyte function by maintaining the adiponectin level during homeostasis and by alleviating inflammatory response through the regulation of adiponectin during low-grade inflammation in adipocytes.
Authors: Stuart P Weisberg; Daniel McCann; Manisha Desai; Michael Rosenbaum; Rudolph L Leibel; Anthony W Ferrante Journal: J Clin Invest Date: 2003-12 Impact factor: 14.808
Authors: Janette M Harkins; Naima Moustaid-Moussa; Yong-Joo Chung; Kristen M Penner; James J Pestka; Colin M North; Kate J Claycombe Journal: J Nutr Date: 2004-10 Impact factor: 4.798
Authors: Yea Eun Kang; Ji Min Kim; Kyong Hye Joung; Ju Hee Lee; Bo Ram You; Min Jeong Choi; Min Jeong Ryu; Young Bok Ko; Min A Lee; Junguee Lee; Bon Jeong Ku; Minho Shong; Ki Hwan Lee; Hyun Jin Kim Journal: PLoS One Date: 2016-04-21 Impact factor: 3.240