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Palmitate potentiates the SMAD3-PAI-1 pathway by reducing nuclear GDF15 levels.
Cell Mol Life Sci
January 2025
Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, Unitat de Farmacologia, Universitat de Barcelona, Av. Joan XXIII 27-31, 08028, Barcelona, Spain.
Nuclear growth differentiation factor 15 (GDF15) reduces the binding of the mothers' against decapentaplegic homolog (SMAD) complex to its DNA-binding elements. However, the stimuli that control this process are unknown. Here, we examined whether saturated fatty acids (FA), particularly palmitate, regulate nuclear GDF15 levels and the activation of the SMAD3 pathway in human skeletal myotubes and mouse skeletal muscle, where most insulin-stimulated glucose use occurs in the whole organism.
View Article and Find Full Text PDFThe Role of Platelet-Neutrophil Interactions in Driving Autoimmune Diseases.
Immunology
January 2025
Department of Neurology, Xuanwu Hospital Capital Medical University, Beijing, China.
Platelets and neutrophils are among the most abundant cell types in peripheral blood. Beyond their traditional roles in thrombosis and haemostasis, they also play an active role in modulating immune responses. Current knowledge on the role of platelet-neutrophil interactions in the immune system has been rapidly expanding.
View Article and Find Full Text PDFSenescence-related circRNA circHIF-1α is associated with pancreatic cancer progression.
Cancer Cell Int
January 2025
School of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou, China.
Recently, there has been growing interest in the role of circular RNAs (circRNAs) in the progression of human cancers. Cellular senescence, a known anti-tumour mechanism, has been observed in several types of cancer. However, the regulatory interplay of circRNAs with cellular senescence in pancreatic cancer (PC) is still unknown.
View Article and Find Full Text PDFDeciphering SPP1-related macrophage signaling in the pathogenesis of intervertebral disc degeneration.
Cell Biol Toxicol
January 2025
Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, No.555 Friendship East Road, South Gate, Beilin District, Xi'an, 710054, Shaanxi, China.
This study delved into the molecular mechanisms underlying mechanical stress-induced intervertebral disc degeneration (msi-IDD) through single-cell and high-throughput transcriptome sequencing in mouse models and patient samples. Results exhibited an upsurge in macrophage presence in msi-IDD intervertebral disc (IVD) tissues, with secreted phosphoprotein 1 (SPP1) identified as a pivotal driver exacerbating degeneration via the protein kinase RNA-like endoplasmic reticulum kinase/ activating transcription factor 4/ interleukin-10 (PERK/ATF4/IL-10) signaling axis. Inhibition of SPP1 demonstrated promising outcomes in mitigating msi-IDD progression in both in vitro and in vivo models.
View Article and Find Full Text PDFNorepinephrine (NE) promotes activated B cells to identify and kill effector CD8 T cells through FasL/Fas pathway in spleen mononuclear cells isolated from experimental autoimmune encephalomyelitis (EAE).
Brain Behav Immun
January 2025
Department of Neurobiology, School of Basic Medical Sciences, Harbin Medical University, Harbin 150081, Heilongjiang, PR China; The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin 150081, Heilongjiang, PR China. Electronic address:
It has been reported that the nervous system can regulate immune reactions through various mechanisms. However, the role of splenic sympathetic nerve activity in the autoimmune reactions during the pathogenesis of experimental autoimmune encephalomyelitis (EAE) remained unclear. Here, we blocked the activity of the splenic sympathetic nerve and found that the number of adaptive immune cells, such as CD4 T cells, CD8 T cells and B cells, were upregulated.
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