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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 PDFEndothelial-Ercc1 DNA repair deficiency provokes blood-brain barrier dysfunction.
Cell Death Dis
January 2025
Amsterdam UMC location Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Aging of the brain vasculature plays a key role in the development of neurovascular and neurodegenerative diseases, thereby contributing to cognitive impairment. Among other factors, DNA damage strongly promotes cellular aging, however, the role of genomic instability in brain endothelial cells (EC) and its potential effect on brain homeostasis is still largely unclear. We here investigated how endothelial aging impacts blood-brain barrier (BBB) function by using excision repair cross complementation group 1 (ERCC1)-deficient human brain ECs and an EC-specific Ercc1 knock out (EC-KO) mouse model.
View Article and Find Full Text PDFNicotine enhances the stemness and tumorigenicity in intestinal stem cells via Hippo-YAP/TAZ and Notch signal pathway.
Elife
January 2025
Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Cigarette smoking is a well-known risk factor inducing the development and progression of various diseases. Nicotine (NIC) is the major constituent of cigarette smoke. However, knowledge of the mechanism underlying the NIC-regulated stem cell functions is limited.
View Article and Find Full Text PDFLung cancer treatment is evolving, and the role of senescent macrophages in tumor immune evasion has become a key focus. This study explores how senescent macrophages interact with lung cancer cells, contributing to tumor progression and immune dysfunction. As aging impairs macrophage functions, including phagocytosis and metabolic signaling, it promotes chronic inflammation and cancer development.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Institute of Neurosciences, University of Barcelona, Barcelona, Catalunya, Spain.
Background: Senescence is a cellular response to stress or damage leading to a state of irreversible growth arrest. As we age, the number of senescent cells increases and directly contributes to age-related conditions including cancer and neurodegenerative diseases. As a result, there is a growing interest to therapeutically target senescence either with drugs eliminating senescent cells (senolytics) or with strategies to modulate their secretory phenotype among others.
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