| Full text | |
| Author(s): Show less - |
Pinto, Ana P.
;
Munoz, Vitor R.
;
da Rocha, Alisson L.
;
Rovina, Rafael L.
;
Ferrari, Gustavo D.
;
Alberici, Luciane C.
;
Simabuco, Fernando M.
;
Teixeira, Giovana R.
;
Pauli, Jose R.
;
de Moura, Leandro P.
;
Cintra, Dennys E.
;
Ropelle, Eduardo R.
;
Freitas, Ellen C.
;
Rivas, Donato A.
;
da Silva, Adelino S. R.
Total Authors: 15
|
| Document type: | Journal article |
| Source: | FRONTIERS IN IMMUNOLOGY; v. 13, p. 13-pg., 2022-10-13. |
| Abstract | |
Interleukin 6 (IL-6) acts as a pro and anti-inflammatory cytokine, has an intense correlation with exercise intensity, and activates various pathways such as autophagy and mitochondrial unfolded protein response. Also, IL-6 is interconnected to circadian clock-related inflammation and can be suppressed by the nuclear receptor subfamily 1, group D, member 1 (Nr1d1, protein product REV-ERB alpha). Since IL-6 is linked to physical exercise-modulated metabolic pathways such as autophagy and mitochondrial metabolism, we investigated the relationship of IL-6 with REV-ERB alpha in the adaptations of these molecular pathways in response to acute intense physical exercise in skeletal muscle. The present study was divided into three experiments. In the first one, wild-type (WT) and IL-6 knockout (IL-6 KO) mice were divided into three groups: Basal time (Basal; sacrificed before the acute exercise), 1 hour (1hr post-Ex; sacrificed 1 hour after the acute exercise), and 3 hours (3hr post-Ex; sacrificed 3 hours after the acute exercise). In the second experiment, C2C12 cells received IL-6 physiological concentrations or REV-ERB alpha agonist, SR9009. In the last experiment, WT mice received SR9009 injections. After the protocols, the gastrocnemius muscle or the cells were collected for reverse transcription-quantitative polymerase chain reaction (RTq-PCR) and immunoblotting techniques. In summary, the downregulation of REV-ERB alpha, autophagic flux, and most mitochondrial genes was verified in the IL-6 KO mice independent of exercise. The WT and IL-6 KO treated with SR9009 showed an upregulation of autophagic genes. C2C12 cells receiving IL-6 did not modulate the Nr1d1 mRNA levels but upregulated the expression of some mitochondrial genes. However, when treated with SR9009, IL-6 and mitochondrial gene expression were upregulated in C2C12 cells. The autophagic flux in C2C12 suggest the participation of REV-ERB alpha protein in the IL-6-induced autophagy. In conclusion, the present study verified that the adaptations required through physical exercise (increases in mitochondrial content and improvement of autophagy machinery) might be intermediated by an interaction between IL-6 and REVERB alpha. (AU) | |
| FAPESP's process: | 21/06291-3 - Multi-user Equipament approved in grant 2019/11820-5: ChemiDoc Imaging System and accessories |
| Grantee: | Adelino Sanchez Ramos da Silva |
| Support Opportunities: | Multi-user Equipment Program |
| FAPESP's process: | 21/08693-1 - Effect of global or conditional deletion (skeletal muscle) of the Nr1d1 gene on aging |
| Grantee: | Ana Paula Pinto |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 19/11820-5 - Nr1d1 function on the aging-associated Sarcopenia |
| Grantee: | Adelino Sanchez Ramos da Silva |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/12765-2 - Emerging role of rev-erb-alpha in molecular adaptations to different physical exercise models |
| Grantee: | Alisson Luiz da Rocha |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 19/21709-4 - Implications of mitonuclear imbalance and UPRmt in hypothalamic neurons in the genesis of Obesity |
| Grantee: | Eduardo Rochete Ropelle |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 21/08692-5 - Analysis of the rev-erb-alpha protein interactome through immunoprecipitation of target protein and identification of possible ligands by mass spectrometry in cell culture |
| Grantee: | Vitor Rosetto Muñoz |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 20/13443-1 - Implications of aerobic exercise on the Notch 1 signaling pathway and regulation of lipogenesis and gluconeogenesis in the liver |
| Grantee: | José Rodrigo Pauli |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/14818-9 - Study of molecular targets important for the control of cancer metabolism: the mTOR/S6K pathway as a central role |
| Grantee: | Fernando Moreira Simabuco |
| Support Opportunities: | Research Grants - Young Investigators Grants - Phase 2 |