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J Cell Sci
January 2025
School of Biological Sciences, Indian Association for the Cultivation of Science, Kolkata-700032, India.
The cytoplasm exhibits viscoelastic properties, displaying both solid and liquid-like behavior, and can actively regulate its mechanical attributes. The cytoskeleton is a major regulator among the numerous factors influencing cytoplasmic mechanics. We explore the interdependence of various cytoskeletal filaments and the impact of their density on cytoplasmic viscoelasticity.
View Article and Find Full Text PDFJACS Au
January 2025
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, CAS, Beijing 100190, China.
DNA nanostructures present new opportunities as Nanotags for electron microscopy (EM) imaging, leveraging their high programmability, unique shapes, biomolecule conjugation capability, and stability compatible with standard cryogenic sample preparation protocols. This perspective highlights the potential of DNA Nanotags to enable high-throughput multiplexed EM analysis and facilitate particle identification for cryogenic electron tomography (cryo-ET). Meanwhile, applying Nanotags in live-cell environments requires the efficient cellular uptake of intact structures and successful cytosolic migration.
View Article and Find Full Text PDFNat Commun
January 2025
Klinik für Urologie und Zentrale Klinische Forschung, Klinikum der Universität Freiburg, Freiburg, Germany.
Prostate cancer (PCa) growth depends on de novo lipogenesis controlled by the mitochondrial pyruvate dehydrogenase complex (PDC). In this study, we identify lysine methyltransferase (KMT)9 as a regulator of PDC activity. KMT9 is localized in mitochondria of PCa cells, but not in mitochondria of other tumor cell types.
View Article and Find Full Text PDFThe human () gene encodes a plasma membrane protein SLC39A8 (ZIP8) that mediates the specific uptake of the metals Cd, Mn, Zn, Fe, Co, and Se Pathogenic variants within are associated with congenital disorder of glycosylation type 2 (CDG type II) or Leigh-like syndrome. However, numerous mutations of uncertain significance are also linked to different conditions or benign traits. Our study characterized 21 variants and measured their impact on protein localization and intracellular levels of Cd, Zn, and Mn We identified four variants that disrupt protein expression, five variants with high retention in the endoplasmic reticulum, and 12 variants with localization to the plasma membrane.
View Article and Find Full Text PDFDrug Metab Dispos
January 2025
Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kakuma-machi, Kanazawa, Japan; WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa, Japan.
Pirfenidone (PIR) is used in the treatment of idiopathic pulmonary fibrosis. After oral administration, it is metabolized by cytochrome P450 1A2 to 5-hydroxylpirfenidone (5-OH PIR) and further oxidized to 5-carboxylpirfenidone (5-COOH PIR), a major metabolite excreted in the urine (90% of the dose). This study aimed to identify enzymes that catalyze the formation of 5-COOH PIR from 5-OH PIR in the human liver.
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