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Host hepatocyte senescence determines the success of hepatocyte transplantation in a mouse model of liver injury.
J Hepatol
January 2025
Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, EH16 4UU, United Kingdom. Electronic address:
Background & Aims: Hepatocyte transplantation has shown promise for genetic diseases of the hepatocytes but to date has shown limited efficacy for non-genetic forms of severe liver injury. Limited cell engraftment and poor function of donor hepatocytes in recipient livers impacts the clinical utility of hepatocyte cell therapy. The mechanisms underpinning this are poorly understood.
View Article and Find Full Text PDFExploring the dynamics of T-cell responses: a combined approach using EdU incorporation and proliferation dye dilution assay.
Immunol Cell Biol
December 2024
R&D, Sanquin Diagnostic Services, Amsterdam, The Netherlands.
Understanding antigen-specific T-cell responses is crucial for advancing immunotherapies and vaccine development. This study proposes a novel approach combining two complementary assays: the 5-ethynyl-2'-deoxyuridine (EdU) incorporation assay (tracking proliferation over 0-48 h) and the VPD450 dye dilution assay (tracking proliferation over 4-6 days). Integrating these techniques provides additional insights into T-cell proliferation kinetics.
View Article and Find Full Text PDFAfter birth, tissues grow continuously until reaching adult size, with each organ exhibiting unique cellular dynamics, growth patterns, and (stem or non-stem) cell sources. Using a suite of experimental and computational multiscale approaches, we found that aortic expansion is guided by specific biological principles and scales with the vertebral column rather than animal body weight. Expansion proceeds via two distinct waves of arterial cell proliferation along blood flow that are spatially stochastic, yet temporally coordinated.
View Article and Find Full Text PDFComparing the growth kinetics and characteristics of Wharton's jelly derived mesenchymal stem cells expanded using different culture mediums.
Cytotechnology
February 2025
Department of Tissue Engineering and Regenerative Medicine (DTERM), Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
Wharton's jelly-derived mesenchymal stem cells (WJ-MSCs) can be isolated from umbilical cords which is abundant and easy to obtain. Due to their potent immunosuppressive properties, multilineage differentiation potential, and lack of ethical issues, WJ-MSCs are considered a promising candidate for therapeutic applications. However, large-scale in vitro expansion is necessary to obtain enough cells for therapeutic purposes.
View Article and Find Full Text PDFBlocking Deoxycytidine Kinase in Activated Lymphocytes Depletes Deoxycytidine Triphosphate Pools and Alters Cell Cycle Kinetics to Yield Less Disease in a Mouse Multiple Sclerosis Model.
Immunology
December 2024
Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, California, USA.
Autoreactive, aberrantly activated lymphocytes that target myelin antigens in the central nervous system (CNS) are primary drivers of the autoimmune disease multiple sclerosis (MS). Proliferating cells including activated lymphocytes require deoxyribonucleoside triphosphates (dNTPs) for DNA replication. dNTPs can be synthesised via the de novo pathway from precursors such as glucose and amino acids or the deoxyribonucleoside salvage pathway from extracellular deoxyribonucleosides.
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