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Bone morphogenetic protein-4 induced matrix turnover and osteogenic differentiation-related molecules of stem cells from apical papilla and its associated ALK/Smad signaling.
J Dent Sci
January 2025
School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan.
Background/purpose: Revascularization procedures are used over apexification to treat teeth with necrotic pulp tissues and incomplete root formation. Clinically, inducing proliferation, migration, matrix deposition, and differentiation of stem cells from apical papilla (SCAPs) are critical for pulp regeneration. The study aimed to elucidate the impact of bone morphogenetic protein-4 (BMP-4) on plasminogen activation molecules and the osteogenic/odontogenic differentiation of SCAPs, as well as understand the related signaling mechanisms.
View Article and Find Full Text PDFVitamin K-dependent gamma-carboxyglutamic acid protein 1 promotes pancreatic ductal adenocarcinoma progression through stabilizing oncoprotein KRAS and tyrosine kinase receptor EGFR.
Clin Transl Med
January 2025
State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China.
Background: Vitamin K-dependent γ-glutamic acid carboxylation (Gla) proteins are calcium-binding and membrane-associated, participating in coagulation, bone turnover, and cancer biology. The molecular function of transmembrane proline-rich Gla proteins (PRRGs) remains unexplored.
Methods: Analysis of pancreatic ductal adenocarcinoma (PDAC) datasets, including transcription profiles, clinical data, and tissue microarrays, was conducted to evaluate PRRG1 expression and its clinical relevance.
Evolved enzymes in the metabolism of biological poly-acids: Applications in otolaryngological biocatalysis.
Int J Biol Macromol
January 2025
Department of Otolaryngology, The First Hospital of China Medical University, 155 Nanjing Street, Heping, Shenyang, Liaoning 110001, China. Electronic address:
This study explores evolved Hyaluronidase, Lipase, and Elastase's identification, characterization, and therapeutic potential to enhance tissue regeneration and drug delivery systems in otolaryngology. Hyaluronidase variant H5 exhibited a turnover number (k_cat) of 1500 min, a 200 % increase over wild-type (500 min), demonstrating superior hyaluronic acid degradation. Similarly, lipase variant L2 reached 1200 min (400 min wild-type), and elastase variant E3 showed a turnover of 2200 min (1000 min wild-type).
View Article and Find Full Text PDFRole of polyamines in intestinal mucosal barrier function.
Semin Immunopathol
January 2025
Dairy Science and Technology Institute, Kyodo Milk Industry Co. Ltd, 20-1 Hirai, Hinode-Machi, Nishitama-Gun, Tokyo, 190-0182, Japan.
The intestinal epithelium is a rapidly self-renewing tissue; the rapid turnover prevents the invasion of pathogens and harmful components from the intestinal lumen, preventing inflammation and infectious diseases. Intestinal epithelial barrier function depends on the epithelial cell proliferation and junctions, as well as the state of the immune system in the lamina propria. Polyamines, particularly putrescine, spermidine, and spermine, are essential for many cell functions and play a crucial role in mammalian cellular homeostasis, such as that of cell growth, proliferation, differentiation, and maintenance, through multiple biological processes, including translation, transcription, and autophagy.
View Article and Find Full Text PDFSignificant oligodendrocyte progenitor and microglial cell death is a feature of remyelination following toxin-induced experimental demyelination.
Brain Commun
January 2025
Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK.
The extent to which glial cell turnover features in successful remyelination is unclear. In this study, the rat caudal cerebellar peduncle-ethidium bromide lesion model was used to profile oligodendroglial and microglial/macrophage cell death and proliferation dynamics over the course of repair. Lesioned and control tissue was co-labelled with antibody markers for cell identity, proliferation, and apoptosis (TUNEL assay), then imaged at full thickness using confocal microscopy and quantified using custom CellProfiler pipelines.
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