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Multifunctional DNA-Collagen Biomaterials: Developmental Advances and Biomedical Applications.
ACS Biomater Sci Eng
January 2025
J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States.
The complexation of nucleic acids and collagen forms a platform biomaterial greater than the sum of its parts. This union of biomacromolecules merges the extracellular matrix functionality of collagen with the designable bioactivity of nucleic acids, enabling advances in regenerative medicine, tissue engineering, gene delivery, and targeted therapy. This review traces the historical foundations and critical applications of DNA-collagen complexes and highlights their capabilities, demonstrating them as biocompatible, bioactive, and tunable platform materials.
View Article and Find Full Text PDFGenomic clustering tendency of transcription factors reflects phase-separated transcriptional condensates at super-enhancers.
Nucleic Acids Res
January 2025
Department of Genome Sciences, University of Virginia, PO Box 800717, Charlottesville, VA 22908, USA.
Many transcription factors (TFs) have been shown to bind to super-enhancers, forming transcriptional condensates to activate transcription in various cellular systems. However, the genomic and epigenomic determinants of phase-separated transcriptional condensate formation remain poorly understood. Questions regarding which TFs tend to associate with transcriptional condensates and what factors influence their association are largely unanswered.
View Article and Find Full Text PDFThe nuclear DNA and RNA distribution in Pelomyxa spp. (Amoebozoa, Archamoebae, Pelobiontida) revealed by a simple-to-use DAPI/pyronin staining method.
J Eukaryot Microbiol
January 2025
Laboratory of Cytology of Unicellular Organisms, Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia.
The genus Pelomyxa includes 15 species of anaerobic Archamoebae with remarkable diverse nucleoplasm morphology. Nuclear structures, like chromatin and nucleoli, of several members of the genus was previously identified only based on their ultrastructural similarity to typical structures of somatic cells of higher eukaryotes. Here, we explored an easy-to-use, one-step intravital staining method with DAPI and pyronin to distinguish between DNA and RNA structures in nuclei of unfixed cells of Pelomyxa belevskii and P.
View Article and Find Full Text PDFThe planktonic freshwater ciliate Balanion planctonicum (Ciliophora, Prostomatea): A cryptic species complex or a "complex species"?
J Eukaryot Microbiol
January 2025
Limnological Station, Department of Plant and Microbial Biology, University of Zurich, Kilchberg, Switzerland.
The globally distributed ciliate Balanion planctonicum is a primary consumer of phytoplankton spring blooms. Due to its small size (~20 μm), identification and quantification by molecular tools is preferable as an alternative to the laborious counting of specimen in quantitative protargol stains. However, previous sequencing of the 18S rDNA V9 region of B.
View Article and Find Full Text PDFNucleosome repositioning is essential for establishing nucleosome-depleted regions (NDRs) to initiate transcription. This process has been extensively studied using structural, biochemical, and single-molecule approaches, which require homogenously positioned nucleosomes. This is often achieved using the Widom 601 sequence, a highly efficient nucleosome positioning element (NPE) selected for its unusually strong binding to the H3-H4 histone tetramer.
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