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Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
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Function: _error_handler
File: /var/www/html/index.php
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Filename: controllers/Detail.php
Line Number: 249
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File: /var/www/html/application/controllers/Detail.php
Line: 249
Function: _error_handler
File: /var/www/html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
Line: 249
Function: _error_handler
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Message: Trying to access array offset on value of type null
Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
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Function: insertAPISummary
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Function: require_once
Cellular senescence, which is triggered by various stressors, manifests as irreversible cell cycle arrest, resulting in the disruption of multiple nuclear condensates. One of the affected structures is the nucleolus, whose tripartite layout, separated into distinct liquid phases, allows for the stepwise progression of ribosome biogenesis. The dynamic properties of dense fibrillar components, a sub-nucleolar phase, are crucial for mediating pre-rRNA processing. However, the mechanistic link between the material properties of dense fibrillar components and cellular senescence remains unclear. We established a significant association between cellular senescence and alterations in nucleolar materiality and characteristics, including the number, size, and sphericity of individual subphases of the nucleolus. Senescent cells exhibit reduced fibrillarin dynamics, aberrant accumulation of high-order protein assemblies, such as oligomers and fibrils, and increased dense fibrillar component density. Intriguingly, the addition of RNA-interacting entities mirrored the diminished diffusion of fibrillarin in the nucleolus during cellular senescence. Thus, our findings contribute to a broader understanding of the intricate changes in the materiality of the nucleolus associated with cellular senescence and shed light on nucleolar dynamics in the context of aging and cellular stress.
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http://dx.doi.org/10.1016/j.redox.2024.103279 | DOI Listing |
FEBS J
December 2024
Shanghai Engineering Research Center of Tooth Restoration and Regeneration & Tongji Research Institute of Stomatology & Department of Orthodontics, Stomatological Hospital and Dental School, Tongji University, Shanghai, China.
Premature accumulation of senescent cells results in tissue destruction, and it is one of the potential primary mechanisms underlying the accelerated progression of diabetes and periodontitis. However, whether this characterized phenomenon could account for periodontal pathogenesis under hyperglycemic conditions remains unclear. In this study, we assessed the senescent phenotypic changes in experimental periodontitis under hyperglycemic conditions.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, 430079, China.
Fibroblast activation protein (FAP), predominantly expressed in activated fibroblasts, plays a key role in inflammatory bone diseases, but its role in periodontitis remains unclear. Accordingly, this study identified a positive association between FAP levels and periodontitis susceptibility using Mendelian randomization analysis. Human and mouse periodontitis tissues show elevated FAP and reduced osteolectin (OLN), an endogenous FAP inhibitor, indicating a FAP/OLN imbalance.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, P. R. China.
Anaplastic thyroid cancer (ATC) is the most lethal tumor arising from thyroid follicular epithelium. Lenvatinib is an off-label use option for ATC patients in many countries but an approved prescription in Japan. However, lenvatinib resistance is a substantial clinical challenge.
View Article and Find Full Text PDFBiochem Pharmacol
December 2024
The National Clinical Research Center for Kidney Diseases, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China; The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, China. Electronic address:
Podocyte injury leads to proteinuria and glomerular diseases. Different podocyte injuries have distinct mechanisms. It is desirable to use a regimen that targets the mechanism of a given podocyte injury for a specific and improved result.
View Article and Find Full Text PDFMethods Mol Biol
December 2024
University of California - Davis, Department of Environmental Toxicology, Davis, CA, USA.
Hair is a ubiquitous and robust mammalian tissue with biological, clinical, forensic, social, and economic significance. The hair shaft proteome reflects both structural proteins, dominated by cuticular intermediate filament keratins and associated proteins, and proteins involved in the final cellular processes of terminally differentiating corneocytes prior to cornification. These distinct biological processes involve cell maintenance, biosynthesis, senescence, and xenobiotic response.
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