98%
921
2 minutes
20
In a Science paper, Park et al. identified interleukin (IL)-1α as a key driver of positive feedback in inflammaging, linking aging-associated downregulation of DNMT3A to increased IL-1α production in lung myeloid cells. This triggers emergency myelopoiesis in the bone marrow, amplifying myeloid-mediated intratumoral immunosuppression for tumor progression in aged mice.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.ccell.2024.09.015 | DOI Listing |
PLoS Biol
September 2025
Department of Virology, Immunology & Microbiology, Boston University Chobanian & Avedisian School of Medicine, Boston, Massachusetts, United States of America.
Despite the success of antiretroviral therapy in suppressing plasma viremia in people living with human immunodeficiency virus type-1 (HIV-1), persistent viral RNA expression in tissue reservoirs is observed and can contribute to HIV-1-induced immunopathology and comorbidities. Infection of long-lived innate immune cells, such as tissue-resident macrophages and microglia may contribute to persistent viral RNA production and chronic inflammation. We recently reported that de novo cytoplasmic expression of HIV-1 intron-containing RNA (icRNA) in macrophages and microglia leads to MDA5 and MAVS-dependent innate immune sensing and induction of type I IFN responses, demonstrating that HIV icRNA is a pathogen-associated molecular pattern (PAMP).
View Article and Find Full Text PDFJ Vis Exp
August 2025
Laboratory of Regenerative Medicine in Sports Science, School of Physical Education and Sports Science, South China Normal University; Bone and Joint Research Team of Degeneration and Injury, Guangdong Provincial Academy of Chinese Medical Sciences;
Post-traumatic osteoarthritis (PTOA) is a degenerative joint disease triggered by trauma or intense mechanical stress, leading to joint cartilage degeneration and functional impairment. Prostaglandin E2 (PGE2) contributes significantly to cartilage degradation following mechanical injury by activating its receptor, Prostaglandin E receptor 4 (EP4), on chondrocyte membranes. The homeostasis of articular cartilage primarily relies on the dynamic balance between cartilage degradation and repair, a process finely regulated by chondrocytes.
View Article and Find Full Text PDFDose Response
September 2025
Department of Interventional Radiology, The Second People's Hospital of Nantong, Nantong, Jiangsu Province, China.
Objectives: This study investigated the cardioprotective effects of stachydrine (STA) in lipopolysaccharide (LPS)-induced septic mice and H9c2 cardiomyocytes, focusing on its anti-apoptotic, anti-inflammatory, and anti-ferroptotic actions.
Methods: We established an LPS-induced sepsis model in mice and an LPS-stimulated H9c2 cardiomyocyte model in vitro.
Results: STA markedly reduced LPS-induced myocardial apoptosis, as demonstrated by decreased TUNEL-positive cells, and attenuated the elevation of serum cardiac injury markers, including creatine kinase-MB (CK-MB), lactate dehydrogenase (LDH), brain natriuretic peptide (BNP), cardiac troponin I (cTnI), and cardiac troponin T (cTnT) levels.
Front Immunol
September 2025
Department of Pathophysiology, School of Basic Medical Science, Xinjiang Medical University, Urumqi, Xinjiang, China.
Objective: Diabetes mellitus combined with nonalcoholic fatty liver disease is a prevalent and intricate metabolic disorder that presents a significant global health challenge, imposing economic and emotional burdens on society and families. An in-depth understanding of the disease pathogenesis is crucial for enhancing diagnostic and therapeutic efficacy. Therefore, the study aims to identify and validate autophagy-related diagnostic biomarkers associated with T2DM-associated MAFLD, investigate regulatory mechanisms in disease progression, and explore cellular diversity within the same tissue using single-cell sequencing data.
View Article and Find Full Text PDFZhong Nan Da Xue Xue Bao Yi Xue Ban
May 2025
Department of Rehabilitation Medicine, Second Xiangya Hospital, Central South University, Changsha 410011.
Objectives: Osteoarthritis (OA) is one of the most common chronic degenerative diseases, with chondrocyte apoptosis and extracellular matrix (ECM) degradation as the major pathological changes. The mechanical stimulation can attenuate chondrocyte apoptosis and promote ECM synthesis, but the underlying molecular mechanisms remain unclear. This study aims to investigate the role of primary cilia (PC) in mediating the effects of mechanical stimulation on OA progression.
View Article and Find Full Text PDF