Aging & Longevity

A TBK1-independent primordial function of STING in lysosomal biogenesis

1 month 2 weeks ago
Stimulator of interferon genes (STING) is activated in many pathophysiological conditions, leading to TBK1-dependent interferon production in higher organisms. However, primordial functions of STING independent of TBK1 are poorly understood. Here, through proteomics and bioinformatics approaches, we identify lysosomal biogenesis as an unexpected function of STING. Transcription factor EB (TFEB), an evolutionarily conserved regulator of lysosomal biogenesis and host defense, is activated by STING...
Bo Lv

IL-1 signaling in aging and cancer: An inflammaging feedback loop unveiled

1 month 2 weeks ago
In a Science paper, Park et al. identified interleukin (IL)-1α as a key driver of positive feedback in inflammaging, linking aging-associated downregulation of DNMT3A to increased IL-1α production in lung myeloid cells. This triggers emergency myelopoiesis in the bone marrow, amplifying myeloid-mediated intratumoral immunosuppression for tumor progression in aged mice.
Mingyong Liu

Breaking new ground on human health and well-being with epigenetic clocks: A systematic review and meta-analysis of epigenetic age acceleration associations

1 month 2 weeks ago
Epigenetic clocks provide an accurate molecular readout of epigenetic age and epigenetic age acceleration (EAA) derived from DNA methylation data have shown promise as biomarkers of ageing. This systematic review synthesised research on associations between EAA measures and various physiological, cognitive, social, and environmental factors. A comprehensive search strategy identified 299 publications reporting 1050 unique EAA-factor associations based on 53 methylation clocks. Random-effects...
Olga Chervova

The role of sirtuin 1 in ageing and neurodegenerative disease: A molecular perspective

1 month 2 weeks ago
Sirtuin 1 (SIRT1), an NAD+-dependent deacetylase, has emerged as a key regulator of cellular processes linked to ageing and neurodegeneration. SIRT1 modulates various signalling pathways, including those involved in autophagy, oxidative stress, and mitochondrial function, which are critical in the pathogenesis of neurodegenerative diseases. This review explores the therapeutic potential of SIRT1 in several neurodegenerative disorders, including Alzheimer's disease (AD), Parkinson's disease (PD),...
Riya Thapa

The associations of n-3 fatty acid intake with handgrip strength and muscle mass indices in older adults: A cross-sectional study from UK Biobank

1 month 2 weeks ago
CONCLUSION: Although n-3 fatty acid intake was associated with grip strength index in older women, regardless of their activity status, the magnitude of this association was very small and unlikely to be clinically relevant. Additionally, n-3 fatty acid was not associated with muscle mass index.
Abdulrahman T Alsowail

RETRACTION: 1,25-Dihydroxyvitamin D exerts an antiaging role by activation of Nrf2-antioxidant signaling and inactivation of p16/p53-senescence signaling

1 month 2 weeks ago
Chen, L., Yang, R., Qiao, W., Zhang, W., Chen, J., Mao, L., Goltzman, D., Miao, D. (2019). 1,25-Dihydroxyvitamin D exerts an antiaging role by activation of Nrf2-antioxidant signaling and inactivation of p16/p53-senescence signaling. Aging Cell, 18(3), e12951. https://doi.org/10.1111/acel.12951 The above article, published online on 24 March 2019 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between; the journal Editor-in-Chief, Monty Montano; The Anatomical...

Depletion of loss-of-function germline mutations in centenarians reveals longevity genes

1 month 2 weeks ago
While previous studies identified common genetic variants associated with longevity in centenarians, the role of the rare loss-of-function (LOF) mutation burden remains largely unexplored. Here, we investigated the burden of rare LOF mutations in Ashkenazi Jewish individuals from the Longevity Genes Project and LonGenity study cohorts using whole-exome sequencing data. We found that centenarians had a significantly lower burden (11-22%) of LOF mutations compared to controls. Similar effects were...
Kejun Ying

A hematology-based clock derived from the Study of Longitudinal Aging in Mice to estimate biological age

1 month 2 weeks ago
Biological clocks and other molecular biomarkers of aging are difficult to implement widely in a clinical setting. In this study, we used routinely collected hematological markers to develop an aging clock to predict blood age and determine whether the difference between predicted age and chronologic age (aging gap) is associated with advanced aging in mice. Data from 2,562 mice of both sexes and three strains were drawn from two longitudinal studies of aging. Eight hematological variables and...
Jorge Martinez-Romero

Priorities and challenges in social and healthcare policies for older people living in the Mediterranean basin: A Delphi panel study

1 month 2 weeks ago
CONCLUSIONS: This Delphi study reveals significant disparities in social and healthcare policies for older adults across Mediterranean countries, highlighting shared challenges and specific national needs. European nations like Greece and Spain face fragmented systems, while non-European countries such as Lebanon, Egypt, and Tunisia lack specialized geriatric services and social security. All countries urgently need better professional training, social and economic empowerment of older adults,...
Ana María Porcel-Gálvez

Developmental trajectories and heterogeneity of social engagement among Chinese older adults: a growth mixture model

1 month 2 weeks ago
CONCLUSION: Three trends were observed at the social engagement level. Older adults with initially high levels of social engagement exhibited a continuous upward trend, whereas those with initially low levels experienced a decline in their social engagement, and those with initially intermediate levels remained quite stable. Considering the primary heterogeneous factors, it is imperative for governments to enhance basic services and prioritize the well-being of older adults. Additionally,...
Han Zhou

Heterogeneity in oligodendrocyte precursor cell proliferation is dynamic and driven by passive bioelectrical properties

1 month 2 weeks ago
Oligodendrocyte precursor cells (OPCs) generate myelinating oligodendrocytes and are the main proliferative cells in the adult central nervous system. OPCs are a heterogeneous population, with proliferation and differentiation capacity varying with brain region and age. We demonstrate that during early postnatal maturation, cortical, but not callosal, OPCs begin to show altered passive bioelectrical properties, particularly increased inward potassium (K^(+)) conductance, which correlates with G1...
Helena Pivoňková

A mitochondrial unfolded protein response-independent role of DVE-1 in longevity regulation

1 month 2 weeks ago
The special AT-rich sequence-binding (SATB) protein DVE-1 is widely recognized for its pivotal involvement in orchestrating the retrograde mitochondrial unfolded protein response (mitoUPR) in C. elegans. In our study of downstream factors contributing to lifespan extension in sensory ciliary mutants, we find that DVE-1 is crucial for this longevity effect independent of its canonical mitoUPR function. Additionally, DVE-1 also influences lifespan under conditions of dietary restriction and...
Yi Sheng

Angiopoietin-2 reverses endothelial cell dysfunction in progeria vasculature

1 month 2 weeks ago
Hutchinson-Gilford progeria syndrome (HGPS) is a rare premature aging disorder in children caused by a point mutation in the lamin A gene, resulting in a toxic form of lamin A called progerin. Accelerated atherosclerosis leading to heart attack and stroke are the major causes of death in these patients. Endothelial cell (EC) dysfunction contributes to the pathogenesis of HGPS related cardiovascular diseases (CVD). Endothelial cell-cell communications are important in the development of the...
Sahar Vakili

Life history in Caenorhabditis elegans: from molecular genetics to evolutionary ecology

1 month 2 weeks ago
Life history is defined by traits that reflect key components of fitness, especially those relating to reproduction and survival. Research in life history seeks to unravel the relationships among these traits and understand how life history strategies evolve to maximize fitness. As such, life history research integrates the study of the genetic and developmental mechanisms underlying trait determination with the evolutionary and ecological context of Darwinian fitness. As a leading model...
Christian Braendle

Lessons from the Department of Veterans Affairs: A continuum of age-friendly care for older adults

1 month 2 weeks ago
With almost 90% of Americans expressing a desire to age in place in their home, many health systems and communities are challenged to provide the right resources, at the right time, to support What Matters to older adults. In the Department of Veterans Affairs (VA), approximately 50% of Veterans enrolled in VA health care are aged 65 and older, driving an imperative to provide timely, Age-Friendly care through a broad continuum of services. VA has taken a multifaceted approach to shift Long-Term...
Kimberly A Wozneak

Population clustering of structural brain aging and its association with brain development

1 month 2 weeks ago
Structural brain aging has demonstrated strong inter-individual heterogeneity and mirroring patterns with brain development. However, due to the lack of large-scale longitudinal neuroimaging studies, most of the existing research focused on the cross-sectional changes of brain aging. In this investigation, we present a data-driven approach that incorporate both cross-sectional changes and longitudinal trajectories of structural brain aging and identified two brain aging patterns among 37,013...
Haojing Duan

A new gene signature for endothelial senescence identifies self-RNA sensing by retinoic acid-inducible gene I as a molecular facilitator of vascular aging

1 month 2 weeks ago
The number of senescent vascular endothelial cells increases during aging and their dysfunctional phenotype contributes to age-related cardiovascular disease. Identification of senescent cells is challenging as molecular changes are often tissue specific and occur amongst clusters of normal cells. Here, we established, benchmarked, and validated a new gene signature called EndoSEN that pinpoints senescent endothelial cells. The EndoSEN signature was enriched for interferon-stimulated genes (ISG)...
Jasenka Guduric-Fuchs

Single-cell mitochondrial sequencing reveals low-frequency mitochondrial mutations in naturally aging mice

1 month 2 weeks ago
Mitochondria play a crucial role in numerous biological processes; however, limited methods and research have focused on revealing mitochondrial heterogeneity at the single-cell level. In this study, we optimized the DNBelab C4 single-cell ATAC (assay for transposase-accessible chromatin) sequencing workflow for single-cell mitochondrial sequencing (C4_mtscATAC-seq). We validated the effectiveness of our C4_mtscATAC-seq protocol by sequencing the HEK-293T cell line with two biological...
Fuyan Liu

Multiple outcomes of the germline p16(INK4a) mutation affecting senescence and immunity in human skin

1 month 2 weeks ago
The integrated behaviour of multiple senescent cell types within a single human tissue leading to the development of malignancy is unclear. Patients with Familial Melanoma Syndrome (FMS) have heterozygous germline defects in the CDKN2A gene coding for the cyclin inhibitor p16^(INK4a). Melanocytes within skin biopsies from FMS patients express significantly less p16^(INK4a) but express higher levels of the DNA-damage protein 𝛾H2AX a than fibroblastic cells. However, patient fibroblasts also...
Priya Subramanian

Cognitive synaptopathy: synaptic and dendritic spine dysfunction in age-related cognitive disorders

1 month 2 weeks ago
Cognitive impairment is a leading component of several neurodegenerative and neurodevelopmental diseases, profoundly impacting on the individual, the family, and society at large. Cognitive pathologies are driven by a multiplicity of factors, from genetic mutations and genetic risk factors, neurotransmitter-associated dysfunction, abnormal connectomics at the level of local neuronal circuits and broader brain networks, to environmental influences able to modulate some of the endogenous factors....
Francisco J Barrantes
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