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Exposure to Group B Streptococcus-induced chorioamnionitis alters the proteome of placental extracellular vesicles.
Placenta
January 2025
Department of Pediatrics, Research Institute of the McGill University Health Center, Montreal, Quebec, Canada. Electronic address:
Introduction: Group B Streptococcus (GBS) is an opportunistic pathogen that can induce chorioamnionitis (CA), increasing the risk of neurodevelopmental disorders (NDDs) in the offspring. The placenta facilitates maternal-fetal communication through the release of extracellular vesicles (EVs), which may carry inflammatory molecules such as interleukin (IL)-1. Although the role of EVs in immune modulation is well established, their specific characterization in the context of GBS-induced CA has not yet been investigated.
View Article and Find Full Text PDFUltrastructure expansion microscopy: Enlarging our perspective on apicomplexan cell division.
J Microsc
January 2025
Laboratory of Apicomplexan Biology, Institut Pasteur Montevideo, Montevideo, Uruguay.
Apicomplexans, a large phylum of protozoan intracellular parasites, well known for their ability to invade and proliferate within host cells, cause diseases with major health and economic impacts worldwide. These parasites are responsible for conditions such as malaria, cryptosporidiosis, and toxoplasmosis, which affect humans and other animals. Apicomplexans exhibit complex life cycles, marked by diverse modes of cell division, which are closely associated with their pathogenesis.
View Article and Find Full Text PDFThe small molecule peroxiredoxin mimetics restore growth factor signalings and reverse vascular remodeling.
Free Radic Biol Med
January 2025
Department of Life Science, Ewha Womans University, Seoul 03760, Republic of Korea. Electronic address:
Epidithio-diketopiperazine (ETP) compound is the family of natural fungal metabolites that are known to exert diverse biological effects, such as immunosuppression and anti-cancer activity, in higher animals. However, an enzyme-like catalytic activity or function of the ETP derivatives has not been reported. Here, we report the generation of novel thiol peroxidase mimetics that possess peroxide-reducing activity through strategic derivatization of the core ETP ring structure.
View Article and Find Full Text PDFMicroglial double stranded DNA accumulation induced by DNase II deficiency drives neuroinflammation and neurodegeneration.
J Neuroinflammation
January 2025
State Key Laboratory of Biopharmaceutical Preparation and Delivery, Institute of Process Engineering, Chinese Academy of Sciences, Haidian District, Beijing, 100190, China.
Background: Deoxyribonuclease 2 (DNase II) is pivotal in the clearance of cytoplasmic double stranded DNA (dsDNA). Its deficiency incurs DNA accumulation in cytoplasm, which is a hallmark of multiple neurodegenerative diseases. Our previous study showed that neuronal DNase II deficiency drove tau hyperphosphorylation and neurodegeneration (Li et al.
View Article and Find Full Text PDFStructural insights into the role of the proline rich region in tau function.
Structure
January 2025
Biochemistry and Molecular Biophysics Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA. Electronic address:
Tau plays an important role in modulating axonal microtubules in neurons, while intracellular tau aggregates are found in many neurodegenerative disorders. Tubulin binding sites are found in tau's proline-rich region (PRR), microtubule binding repeats (MTBRs), and pseudo-repeat (R'). Tau phosphorylation sites, which cluster with high frequency within the PRR, regulate tubulin interactions and correlates with disease.
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