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Anal Methods
January 2025
Department of Chemistry, Capital Normal University, Beijing, 100048, China.
Catechins in tea, as promoters of human health, have attracted widespread attention. Herein, a dual-signal mode (colorimetric and fluorescence) sensor array for catechin species fingerprinting was built based on PtNi bunched nanoparticle (PtNi-BNP)--phenylenediamine (OPD)-HO system. PtNi-BNPs catalyze the reaction between OPD and HO to produce oxidized OPD (oxOPD) with both colorimetric (yellow) and fluorescent properties.
View Article and Find Full Text PDFLab Chip
January 2025
Oulu Center for Cell-Matrix Research, Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, P.O. Box 5000, FI-90014 Oulu, Finland.
A novel microfluidic platform was designed to study the cellular architecture of endothelial cells (ECs) in an environment replicating the 3D organization and flow of blood vessels. In particular, the platform was constructed to investigate EC defects in slow-flow venous malformations (VMs) under varying shear stress and flow conditions. The platform featured a standard microtiter plate footprint containing 32 microfluidic units capable of replicating wall shear stress (WSS) in normal veins and enabling precise control of shear stress and flow directionality without the need for complex pumping systems.
View Article and Find Full Text PDFReproduction
January 2025
Y Yu, Reproductive medical center, Peking University Third Hospital, Beijing, China.
In recent decades, it has become increasingly clear that mammalian gametes and early embryos are highly sensitive to metabolic substrates. With advances in single-cell sequencing, metabolomics, and bioinformatics, we now recognize that metabolic pathways not only meet cellular energy demands but also play a critical role in cell proliferation, differentiation, and fate determination. Investigating metabolic processes during oocyte maturation and early embryonic development is thus essential to advancing reproductive medicine and embryology.
View Article and Find Full Text PDFImmunohorizons
January 2025
Center for Virus Research, Chao Family Comprehensive Cancer Center, Department of Molecular Biology and Biochemistry, Charlie Dunlop School of Biological Sciences, University of California, Irvine, Irvine, CA, United States.
The differentiation and functionality of virus-specific T cells during acute viral infections are crucial for establishing long-term protective immunity. While numerous molecular regulators impacting T cell responses have been uncovered, the role of cellular prion proteins (PrPc) remains underexplored. Here, we investigated the impact of PrPc deficiency on the differentiation and function of virus-specific T cells using the lymphocytic choriomeningitis virus (LCMV) Armstrong acute infection model.
View Article and Find Full Text PDFImmunohorizons
January 2025
Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States.
Dysregulated differentiation of naïve CD4+ T cells into T helper 17 (Th17) cells is likely a key factor predisposing to many autoimmune diseases. Therefore, better understanding how Th17 differentiation is regulated is essential to identify novel therapeutic targets and strategies to identify individuals at high risk of developing autoimmunity. Here, we extend our prior work using chemical inhibitors to provide mechanistic insight into a novel regulator of Th17 differentiation, the kinase dual-specificity tyrosine phosphorylation-regulated kinase 1A (DYRK1A).
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