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Molecular Regulators of Metabolic Homeostasis during Development and Obesity-Associated Diseases

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Immunology".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 2388

Special Issue Editor


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Guest Editor
1. Inflammation Program, Roy J. and Lucille A. Carver College of Medicine University of Iowa, Iowa City, IA 52242, USA
2. Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine University of Iowa, Iowa City, IA 52242, USA
3. Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA 52242, USA
Interests: obesity; diabetes; cardiovascular diseases; low-grade inflammation; hyperplasia; hypertrophy; adipose tissue Adipocyte; adipogenesis; insulin signaling; glucose metabolism
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Special Issue Information

Dear Colleagues,

Despite growing attention to the problem, the global epidemic of obesity is at its highest level ever in the Western hemisphere, and obesity rates are rapidly increasing throughout the world. For decades, there has been a long-standing consensus that prolonged obesity is associated with metabolic syndrome leading to diabetes, dyslipidemia, and atherosclerosis, in which inflammatory processes and altered metabolic pathways play a pivotal role.

Although biomedical science has advanced our understanding of metabolism and obesity-related comorbidities over the past few decades, the molecular and cellular mechanisms underlying the condition are still complex and not fully understood. A major focus in the field of metabolism and obesity research has been on the adipose tissue as a regulatory center of metabolic homeostasis throughout life. While formation of fat cells through proliferation of adipocyte precursors, preadipocytes, and their differentiation into new adipocytes predominates during infancy, obesity has mainly been associated with hypertrophic adipose cell enlargement due to triglyceride accumulation. Notably, several immune cell populations have been implicated in the regulation of adipocyte function in the context of metabolic homeostasis as well as obesity and associated diseases.

This Special Issue aims to provide novel insights into the physiological and pathological aspects of healthy body weight management and adiposity. To this end, we welcome experts in the field to contribute research articles and critical reviews on molecular and cellular mechanisms involved in the regulation of metabolic homeostasis and imbalance with a special attention to the pathophysiology of metabolic disorders, such as diabetes, dyslipidemia, and obesity-related cardiovascular complications.

Dr. Thorsten Maretzky
Guest Editor

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Keywords

  • adipose tissue development
  • adipogenesis
  • hypertrophy
  • hypoplasia
  • autophagy
  • lipogenesis
  • lipolysis
  • insulin signaling
  • low-grade inflammation
  • obesity
  • diabetes
  • cardiovascular dysfunctions
  • metabolic syndrome

Published Papers (1 paper)

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Research

18 pages, 2875 KiB  
Article
Ameliorating Effects of TRIM67 against Intestinal Inflammation and Barrier Dysfunction Induced by High Fat Diet in Obese Mice
by Qihui Luo, Asad Jahangir, Junbo He, Chao Huang, Yu Xia, Lanlan Jia, Xiaoli Wei, Ting Pan, Yanni Du, Bin Mu, Huan Gong, Wentao Liu, Saif Ur-Rehman, Kangcheng Pan and Zhengli Chen
Int. J. Mol. Sci. 2022, 23(14), 7650; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms23147650 - 11 Jul 2022
Cited by 1 | Viewed by 1903
Abstract
Tripartite Motif 67 (TRIM67) is an important member of TRIM family proteins, which participates in different cellular processes including immune response, proliferation, differentiation, carcinogenesis, and apoptosis. In recent years, a high fat diet (HFD) has remained one of the main causes of different [...] Read more.
Tripartite Motif 67 (TRIM67) is an important member of TRIM family proteins, which participates in different cellular processes including immune response, proliferation, differentiation, carcinogenesis, and apoptosis. In recent years, a high fat diet (HFD) has remained one of the main causes of different metabolic diseases and increases in intestinal permeability as well as inducing intestinal inflammation. The current study investigated the protective effects of TRIM67 in the ileum and colon of obese mice. 4-week-old wild-type (WT) C57BL/6N mice and TRIM67 knockout (KO) C57BL/6N mice were selected and randomly divided into four sub-groups, which were fed with control diet (CTR) or HFD for 14 weeks. Samples were collected at the age of 18 weeks for analysis. To construct an in vitro obesity model, over-expressed IPEC-J2 cells (porcine intestinal cells) with Myc-TRIM67 were stimulated with palmitic acid (PA), and its effects on the expression level of TRM67, inflammatory cytokines, and barrier function were evaluated. The KO mice showed pathological lesions in the ileum and colon and this effect was more obvious in KO mice fed with HFD. In addition, KO mice fed with a HFD or CTR diet had increased intestinal inflammation, intestinal permeability, and oxidative stress compared to that WT mice fed with these diets, respectively. Moreover, IPEC-J2 cells were transfected with TRIM67 plasmid to perform the same experiments after stimulation with PA, and the results were found consistent with the in vivo evaluations. Taken together, our study proved for the first time that HFD and TRIM67 KO mice have synergistic damaging effects on the intestine, while TRIM67 plays an important protective role in HFD-induced intestinal damage. Full article
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