Aim: To explore the changes and significance of spleen T cell subsets in ageing mice induced by D-galactose.
Methods: Ageing mice model was successfully established by 100 g/L D-galactose. The content of IFN-γ and IL-4 in serum was measured by ELISA. T cell subsets were detected by Immunofluorescence technique and flow cytometry.
Results: The content of IFN-γ and IL-4 in the serum was decreased of model group (P<0.01). The naive T cell related molecule, CD45RA was decreased(P<0.05). T cell activation-related molecule, CD25 was decreased(P<0.05). The Foxp3 in CD4(+);CD25(+); T cell was increased(P<0.01).
Conclusion: In spleen of the ageing mice, the percentage of naive and active T cell are decreased, but The percentage of CD4(+); Tr subset is increased.
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Matrix Biol
January 2025
Department of Surgery, Emory University, Atlanta, GA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA; Research Services, Atlanta VA Medical Center, Decatur, GA, USA. Electronic address:
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Henan Academy of Sciences, Zhengzhou 450000, China; Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. Electronic address:
Cellular senescence, a hallmark of aging, involves a stable exit from the cell cycle. Senescent cells (SnCs) are closely associated with aging and aging-related disorders, making them potential targets for anti-aging interventions. In this study, we demonstrated that human embryonic stem cell-derived exosomes (hESC-Exos) reversed senescence by restoring the proliferative capacity of SnCs in vitro.
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Institut de Neurociències (INc), Universitat Autònoma Barcelona, Bellaterra 08193, Spain; Vall d'Hebron Institut de Recerca (VHIR), Barcelona 08035, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Spain. Electronic address:
Alzheimer's disease (AD) is a prevalent neurodegenerative disorder characterized by amyloid-β and Tau protein depositions, with treatments focusing on single proteins have shown limited success due to the complexity of pathways involved. This study explored the potential of chronokines -proteins that modulate aging-related processes- as an alternative therapeutic approach. Specifically, we focused on a novel pleiotropic chimeric protein named HEBE, combining s-KL, sTREM2 and TIMP2, guided by bioinformatic analyses to ensure the preservation of each protein's conformation, crucial for their functions.
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Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
The accumulation of ceramides and related metabolites has emerged as a pivotal mechanism contributing to the onset of age-related diseases. However, small molecule inhibitors targeting the ceramide synthesis pathway for clinical use are currently unavailable. We synthesized a safe and orally bioavailable inhibitor, termed ALT-007, targeting the rate-limiting enzyme of ceramide synthesis, serine palmitoyltransferase (SPT).
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Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, and Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China.
Mutations in the synaptic protein MAM domain containing glycosylphosphatidylinositol anchor 2 (MDGA2) have been associated with autism spectrum disorder (ASD). Therefore, elucidating the regulatory mechanisms of MDGA2 can help develop effective treatments for ASD. Liquid chromatography-tandem mass spectrometry was carried out to identify proteins interacting with the extracellular domain of RPS23RG1 and with MDGA2, followed by co-immunoprecipitation assays to confirm protein-protein interactions.
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