期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 23, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/ijms23126488
关键词
neurosecretory protein GL; hypothalamus; neuropeptide; obesity; ICR strain; transgenic mice
资金
- JSPS KAKENHI Grant [JP19H03258, JP20K21760, JP22H00503, JP19K06768]
- Takeda Science Foundation
- Uehara Memorial Foundation
- ONO Medical Research Foundation
This study demonstrates that NPGL causes obesity in different mouse strains and plays a critical role in fat accumulation in adipose tissues.
Neurosecretory protein GL (NPGL) is a small secretory protein identified in the hypothalamus of birds and mammals. We recently reported that NPGL exerts obesogenic effects in obesity-prone C57BL6/J mice. However, whether NPGL elicits adiposity in different mouse strains is poorly understood. In this study, we generated transgenic mice overexpressing Npgl using the ICR strain (Npgl Tg mice) to elucidate the obesogenic effects of NPGL in different strains. Npgl Tg mice showed increased white adipose tissue (WAT) mass. Although the mass of brown adipose tissue (BAT) was slightly altered in Npgl Tg mice, hypertrophy of lipid droplets was also observed in BAT. In contrast, fat accumulation was not induced in the liver, with the upregulation of mRNAs related to hepatic lipolysis. These results support the hypothesis that NPGL causes obesity in several strains and species. This report highlights the pivotal role of NPGL in fat accumulation in adipose tissues and contributes to the elucidation of the biological mechanisms underlying obesity and metabolic diseases in heterogeneous populations.
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