1
|
Zhang N, Zhou H, Xu Y, Zhang Y, Yu F, Gui L, Zhang Q, Lu Y. Liraglutide promotes UCP1 expression and lipolysis of adipocytes by promoting the secretion of irisin from skeletal muscle cells. Mol Cell Endocrinol 2024; 588:112225. [PMID: 38570133 DOI: 10.1016/j.mce.2024.112225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 03/27/2024] [Accepted: 03/30/2024] [Indexed: 04/05/2024]
Abstract
Although Liraglutide (Lira) increases serum irisin levels in type 2 diabetes mellitus (T2DM), it is unclear whether it induces expression of uncoupling protein 1 (UCP1) of adipocytes via promoting irisin secretion from skeletal muscle. Male T2DM rats were treated with 0.4 mg/kg/d Lira twice a day for 8 weeks, and the protein expression of phosphorylated AMP kinase (p-AMPK), phosphorylated acetyl-CoA carboxylase 1 (p-ACC1) and UCP1 in white adipose tissues were detected. Differentiated C2C12 cells were treated with palmitic acid (PA) and Lira to detect the secretion of irisin. Differentiated 3T3-L1 cells were treated with irisin, supernatant from Lira-treated C2C12 cells, Compound C or siAMPKα1, the triglyceride (TG) content and the related gene expression were measured. The transcriptome in irisin-treated differentiated 3T3-L1 cells was analyzed. Lira elevated serum irisin levels, decreased the adipocyte size and increased the protein expression of UCP1, p-AMPK and p-ACC1 in WAT. Moreover, it promoted the expression of PGC1α and FNDC5, the secretion of irisin in PA-treated differentiated C2C12 cells. The irisin and supernatant decreased TG synthesis and promoted the expression of browning- and lipolysis-related genes in differentiated 3T3-L1 cells. While Compound C and siAMPKα1 blocked AMPK activities and expression, irisin partly reversed the pathway. Finally, the transcriptome analysis indicated that differently expressed genes are mainly involved in browning and lipid metabolism. Overall, our findings showed that Lira modulated muscle-to-adipose signaling pathways in diabetes via irisin-mediated AMPKα/ACC1/UCP1/PPARα pathway. Our results suggest a new mechanism for the treatment of T2DM by Lira.
Collapse
Affiliation(s)
- Nan Zhang
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Heng Zhou
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Anhui Medical University, Hefei, China
| | - Yijing Xu
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yi Zhang
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Fangmei Yu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Anhui Medical University, Hefei, China
| | - Li Gui
- The Comprehensive Laboratory, School of Basic Medical Science, Anhui Medical University, Hefei, China
| | - Qiu Zhang
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
| | - Yunxia Lu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Anhui Medical University, Hefei, China; The Comprehensive Laboratory, School of Basic Medical Science, Anhui Medical University, Hefei, China.
| |
Collapse
|
2
|
Kalyakulina A, Yusipov I, Kondakova E, Bacalini MG, Giuliani C, Sivtseva T, Semenov S, Ksenofontov A, Nikolaeva M, Khusnutdinova E, Zakharova R, Vedunova M, Franceschi C, Ivanchenko M. Epigenetics of the far northern Yakutian population. Clin Epigenetics 2023; 15:189. [PMID: 38053163 PMCID: PMC10699032 DOI: 10.1186/s13148-023-01600-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/13/2023] [Indexed: 12/07/2023] Open
Abstract
BACKGROUND Yakuts are one of the indigenous populations of the subarctic and arctic territories of Siberia characterized by a continental subarctic climate with severe winters, with the regular January average temperature in the regional capital city of Yakutsk dipping below - 40 °C. The epigenetic mechanisms of adaptation to such ecologies and environments and, in particular, epigenetic age acceleration in the local population have not been studied before. RESULTS This work reports the first epigenetic study of the Yakutian population using whole-blood DNA methylation data, supplemented with the comparison to the residents of Central Russia. Gene set enrichment analysis revealed, among others, geographic region-specific differentially methylated regions associated with adaptation to climatic conditions (water consumption, digestive system regulation), aging processes (actin filament activity, cell fate), and both of them (channel activity, regulation of steroid and corticosteroid hormone secretion). Further, it is demonstrated that the epigenetic age acceleration of the Yakutian representatives is significantly higher than that of Central Russia counterparts. For both geographic regions, we showed that epigenetically males age faster than females, whereas no significant sex differences were found between the regions. CONCLUSIONS We performed the first study of the epigenetic data of the Yakutia cohort, paying special attention to region-specific features, aging processes, age acceleration, and sex specificity.
Collapse
Affiliation(s)
- Alena Kalyakulina
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, 603022, Russia.
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia.
| | - Igor Yusipov
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| | - Elena Kondakova
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
- Institute of Biology and Biomedicine, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| | | | - Cristina Giuliani
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, 40126, Bologna, Italy
| | - Tatiana Sivtseva
- Research Center of the Medical Institute of the North-Eastern Federal University M.K. Ammosova, Yakutsk, 677013, Russia
| | - Sergey Semenov
- Research Center of the Medical Institute of the North-Eastern Federal University M.K. Ammosova, Yakutsk, 677013, Russia
| | - Artem Ksenofontov
- State Budgetary Institution of the Republic of Sakha (Yakutia) Republican Center for Public Health and Medical Prevention, Yakutsk, 677001, Russia
| | - Maria Nikolaeva
- Research Center of the Medical Institute of the North-Eastern Federal University M.K. Ammosova, Yakutsk, 677013, Russia
| | - Elza Khusnutdinova
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa, Russia, 450054
| | - Raisa Zakharova
- Research Center of the Medical Institute of the North-Eastern Federal University M.K. Ammosova, Yakutsk, 677013, Russia
| | - Maria Vedunova
- Institute of Biology and Biomedicine, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| | - Claudio Franceschi
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| | - Mikhail Ivanchenko
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| |
Collapse
|