Two new studies find little evidence of aging in some turtle species.
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14-3-3 promotes sarcolemmal expression of cardiac Ca1.2 and nucleates isoproterenol-triggered channel superclustering.
Proc Natl Acad Sci U S A
February 2025
Department of Physiology and Membrane Biology, University of California Davis, Davis, CA 95616.
The L-type Ca channel (Ca1.2) is essential for cardiac excitation-contraction coupling. To contribute to the inward Ca flux that drives Ca-induced-Ca-release, Ca1.
View Article and Find Full Text PDFCo-option of mitochondrial nucleic acid-sensing pathways by HSV-1 UL12.5 for reactivation from latent infection.
Proc Natl Acad Sci U S A
January 2025
Department of Microbiology, Immunology and Cancer Biology, University of Virginia, Charlottesville, VA 22908.
Although viruses subvert innate immune pathways for their replication, there is evidence they can also co-opt antiviral responses for their benefit. The ubiquitous human pathogen, Herpes simplex virus-1 (HSV-1), encodes a protein (UL12.5) that induces the release of mitochondrial nucleic acid into the cytosol, which activates immune-sensing pathways and reduces productive replication in nonneuronal cells.
View Article and Find Full Text PDFModelling Peroxisomal Disorders in Zebrafish.
Cells
January 2025
Biosciences, Faculty of Health and Life Sciences, University of Exeter, Exeter EX4 4QD, UK.
Peroxisomes are ubiquitous, dynamic, oxidative organelles with key functions in cellular lipid metabolism and redox homeostasis. They have been linked to healthy ageing, neurodegeneration, cancer, the combat of pathogens and viruses, and infection and immune responses. Their biogenesis relies on several peroxins (encoded by genes), which mediate matrix protein import, membrane assembly, and peroxisome multiplication.
View Article and Find Full Text PDFRadially Distributed Electron Transfer on Single-Crystalline Surface of Gold Microplates.
ACS Nano
January 2025
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
Electron transfer is ubiquitous in many chemical reactions and biological phenomena; however, the spatial heterogeneities of electron transfer kinetics in electrocatalysis are so far insufficiently resolved. Measuring and understanding the localized electron transfer are crucial to deciphering the intrinsic activity of electrocatalysts and to achieving further improvements in performance. By using scanning electrochemical probe microscopy to spatially resolve redox electrochemistry across the single-crystalline surface of gold microplates, we discover an intriguing radially distributed electron transfer pattern, where the kinetics around the periphery region are significantly higher than those at the central region, regardless of the redox reaction types.
View Article and Find Full Text PDFParenchymal and Inflammatory Responses to Ozone Exposure in the Aging Healthy and Surfactant Protein C Mutant Lung.
Am J Physiol Lung Cell Mol Physiol
January 2025
Department of Pharmacology and Toxicology, University of Utah College of Pharmacy, Salt Lake City, UT, USA.
Ozone (O) is a ubiquitous pollutant known to produce acute, transient inflammation through oxidative injury and inflammation. These effects are exacerbated in susceptible populations, such as the elderly and those exhibiting genetic mutations in central nodes of pulmonary function. To comprehend the impact of these predisposing factors, the present study examines structural, mechanical, and immunological responses to single acute O exposure (0.
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