Articles tagged with Senescence
Researchers have identified transmembrane 4 L six family member 1 (TM4SF1) as a highly selective surface marker of senescent β-cells in both mice and humans. This discovery provides an important step toward developing targeted senotherapies that could preserve insulin secretion and slow the progression of type 2 diabetes.
Aging cells become more susceptible to ferroptosis due to elevated levels of acid ceramidase, a previously targeted therapeutic candidate. This vulnerability can be passed to neighboring cells, impacting overall tissue health. The discovery offers new hope for supporting healthy aging and treating age-related diseases.
Researchers discovered that senescent cells accumulate high levels of triacylglycerols and increase glycolytic activity, leading to increased lipid droplet accumulation. This finding suggests that lipid droplets may contribute to the harmful effects of senescent microglia in Alzheimer’s disease.
A review of hundreds of studies suggests that polyphenol-rich foods like berries, tea, and olive oil may support healthy brain aging by reducing inflammation and promoting nerve cell function. While no single food can prevent Alzheimer's disease, a balanced diet rich in plant-based foods may help preserve cognitive function over time.
A new study has found that changes in a senior dog's gait can be an early warning sign of dementia. The research tracked the stride length of 88 geriatric dogs over time, revealing a significant decrease in front leg stride length with worsening cognitive decline. This change was found to be more pronounced than age-related decline alone.
A new study reveals that p38MAP kinase plays a central role in regulating senescence-related changes in human muscle cells. The researchers developed a human cell-based model to investigate how senescence develops in skeletal muscle cells and identified a signaling pathway that appears to drive aging in mature muscle fibers.
A recent study found that SNAI1 overexpression drives cellular senescence, ribosome biogenesis, and DNA damage in renal tubular cells, exacerbating kidney fibrosis. The researchers identified 233 proteins with altered expression levels and demonstrated that Snail1 amplifies the senescence-associated secretory phenotype.
Senescent cells that stop dividing but don't die can become abnormally active, causing inflammation and instability in blood vessel plaques. The study found that losing key regulatory proteins activates the CD38 enzyme, leading to a higher risk of blood clots and cardiovascular events.
A new hypothesis proposes that introducing Hydra-like gene expression patterns into rotifers could delay senescence and extend healthspan. The study focuses on conserved molecular pathways, including FoxO, which plays a central role in maintaining stem cell function and cellular resilience.
A Tohoku University research group developed an AI model that estimates retinal age from a fundus photograph, reflecting biological aging and potential disease risk. The model is non-invasive and can be used as a screening aid, identifying patients who may need further health assessments.
Researchers identify senescent macrophages as a driver of fatty liver disease, inflammation and aging. Clearing these cells reversed liver damage in mice on unhealthy diets.
A new study by the Barcelona Supercomputing Center reveals that women's immune systems undergo more pronounced changes with age, leading to a greater susceptibility to autoimmune diseases. In contrast, men experience less extensive immune system changes, but are at higher risk for certain blood cancers.
Researchers at NYU School of Global Public Health found that people living in neighborhoods with fewer social and economic opportunities have higher levels of CDKN2A RNA, a measure of cellular aging. This suggests that structural conditions may be biologically embedded and influence aging processes over time.
A new study from the University of Minnesota Medical School has identified certain naturally occurring polyunsaturated lipids that selectively induce death in senescent cells, which are old and damaged cells that accumulate with age. These lipids trigger a process called ferroptosis, which can be used as a potential treatment for age-r...
Researchers identified a drug-and-supplement combination therapy that reduces senescent cells, inflammation, and injury in diabetic kidney disease. The treatment approach involves senolytics, which selectively target senescent cells.
Researchers focus on system-level resilience and long-term biological coordination to understand aging as a loss of coordination between biological systems. Studies show how mitochondrial signaling influences inflammation in senescence and microbiota–brain interactions shape aging trajectories.
Researchers have characterized the association between cellular senescence and human brain structure in both development and late life. The study found that senescence-related gene expression is linked to brain volume and cortical organization, with distinct roles depending on cell type and stage of life.
Researchers found a progressive shift in RNA contents of sperm with age, potentially contributing to health risks of having kids later in life. The discovery may lead to improved fertility outcomes and diagnostic tools.
Research from King's College London found that theobromine in dark chocolate is linked to lower biological age. The study tested blood-based markers of biological ageing and found a correlation between theobromine levels and reduced biological age.
Researchers developed a machine learning tool, SAMP-Score, to identify compounds that induce senescence in p16-positive cancer cells. The tool successfully identified a promising candidate, QM5928, which triggers senescence without killing cancer cells.
A study by the Gerald P. Murphy Cancer Foundation's Center for Exceptional Longevity Studies found that retaining gonad function can significantly impact frailty mortality risk. Male dogs with shortest testis exposure had high mortality risks, while those with longest gonad exposure showed no consequence of increasing frailty.
Researchers at Mayo Clinic have developed a new technique to identify senescent cells using aptamers, which can potentially lead to targeted therapies. The study found several rare aptamers that bind specifically to fibronectin on the surface of mouse cells, offering a promising approach for characterizing and treating senescent cells.
Researchers found that polyamines primarily activate glycolysis in cancer cells, upregulating eIF5A2 and five ribosomal proteins associated with cancer malignancy. In contrast, eIF5A1 promotes healthy aging by activating mitochondria via autophagy.
Researchers found that exosomes from senescent cells and circulatory exosomes carry molecular signatures associated with biological aging and cellular senescence. These signatures include proteins, lipids, and microRNAs linked to inflammation, oxidative stress, and tissue remodeling.
Researchers found that AUF1 helps prevent aging by breaking down enzymes involved in glucose metabolism. The study's findings improve our understanding of how metabolism affects the aging process.
A study at the Garvan Institute of Medical Research found that inactivation of a stress pathway makes ER+ breast cancer cells ignore stress signals, allowing them to evade treatment. The JNK pathway acts as a cellular alarm system, and its disruption leads to treatment resistance.
Cancer cells with abundant circular DNA elements (ecDNA) carrying oncogenes like MYCN are resistant to chemotherapy. Combining standard chemotherapy with a secondary therapy targeting these senescent cells leads to improved outcomes in mouse models of neuroblastoma and medulloblastoma.
The UT Health San Antonio research team, led by Blake Rasmussen, has been selected as a semifinalist in the XPRIZE Healthspan competition. They will use a low-frequency ultrasound spa to develop a non-invasive treatment that helps renew cells and tissues, potentially improving overall health and longevity.
A new study introduces a novel muscular clock, MAA, which measures how quickly an individual's muscles are aging compared to their actual age. The research found that about 25% of healthy middle-aged and older adults experience accelerated muscle aging, increasing the risk of sarcopenia.
Researchers found that telomerase inactivation in immune cells or connective tissue cells slows tumor growth, but creates conditions for aggressiveness. In contrast, endothelial cell preservation suppresses metastasis.
Wild chimpanzees show reduced participation and performance in tool-use behaviours as they age, with individual differences in impact observed. The study provides evidence that old age leads to a gradual withdrawal from tool use, affecting efficiency and daily tasks.
Some precursor plasma cells in patients with MGUS and SMM enter cellular senescence, a dormant state that prevents cancer progression. In contrast, patients who develop bone marrow cancer lack this protective mechanism. The discovery offers hope for early intervention and potential treatments that promote or inhibit senescence.
Researchers found that consuming foods high in methyl adaptogens, such as green tea and berries, can reduce markers of epigenetic aging. The study, which involved middle-aged men, suggests that targeted food choices may help slow the aging process.
A multicentre study found that biological ageing, measured by frailty index and telomere length, can predict cardiovascular disease risk more accurately than traditional tools. The study, involving over 14,000 individuals, suggests that incorporating biological age into risk assessments could improve cardiovascular health outcomes.
Researchers identified unique biological mechanisms that cause premature aging in the brains of individuals with alcohol, opioid, and stimulant use disorders. Different substances appear to hijack the brain's natural aging rhythm through distinct molecular mechanisms, though some pathways are shared across different substance types.
Researchers identified three subtypes of senescent skin cells with distinct shapes, biomarkers, and functions. The study found that one subtype, C10, becomes more prevalent with age and is harder to kill with existing drugs.
A study analyzing 17,500 individuals found that immune resilience counters factors of aging and mortality through TCF7 gene regulation, reducing mortality risk by 69% in midlife. This promotes salutogenesis, actively fostering health and well-being.
Researchers at Tulane University identified a potential new way to treat idiopathic pulmonary fibrosis (IPF) using an FDA-approved cancer drug. The treatment works by blocking the CTLA4 protein, which blocks overactive T cells, allowing the immune system to clear out damaged cells that cause lung scarring.
Participants who took the supplement showed improvements in grip strength, lower body mobility, and reductions in body weight. The supplement appeared to reduce stem cell turnover, regulate immune function, and influence gene activity related to stress response.
Aging (Aging-US) journal announces a commemorative collection honoring Dr. Mikhail Blagosklonny, a pioneer in aging biology. The special issue will explore key themes central to his scientific contributions, including mechanistic insights and translational approaches.
Researchers at UT Health San Antonio have discovered a way to delay or even block recurrence of the deadliest brain cancer after radiation by targeting senescent cells with experimental 'senolytic' drugs. This approach shows promise in preventing tumor growth and improving patient survival.
Breast cancer survivors experience accelerated aging due to detrimental effects of BC and its treatments, particularly systemic therapies. The study highlights the need for ongoing monitoring and potential strategies to slow down aging in cancer survivors.
Senescent cells can cause chronic inflammation through the secretion of inflammatory molecules, leading to age-related diseases. The study found that a cellular circuit controlling DNA repair can suppress this inflammation, offering potential ways to promote healthier aging.
A Finnish twin study investigated the relationship between long-term leisure-time physical activity and mortality, finding that moderate activity offers a 7% lower mortality risk. The study also found no additional benefit from high levels of physical activity in reducing mortality risk.
A new drug candidate has been developed to target and eliminate senescent cells in the liver, reducing fat buildup and preventing liver damage. The study demonstrates a safer and more effective approach to treating metabolic dysfunction-associated steatotic liver disease (MASLD) and potentially inhibiting liver cancer development.
A newly discovered mechanism has identified a key protein, AP2A1, that toggles between 'young' and 'old' cell states. By suppressing AP2A1 in older cells, researchers were able to reverse senescence and promote cellular rejuvenation. This breakthrough may lead to new treatment targets for diseases associated with old age.
A new study from Penn State finds that oral tissue samples significantly affect epigenetic clock accuracy, leading to older age estimates. Researchers tested five tissue types and seven epigenetic clocks, concluding that blood-based samples are more accurate in measuring biological age.
Researchers discovered that a topical ABT-263 treatment effectively reduces aged skin senescence markers, priming the skin for improved subsequent wound healing. The treatment also triggered inflammation, which surprisingly helped the healing process by 'waking up' the skin's repair systems.
A study of twins found that a diet low in fruits and veggies and high in red meat and sugary drinks accelerates biological aging. Conversely, healthier diets slow down biological aging. The study suggests that diet plays a significant role in aging, even after accounting for other lifestyle factors.
A University of Barcelona team has identified a molecular mechanism that could lead to new strategies for eliminating senescent cells in cancer patients. By analyzing human senescent cells in a melanoma tumor model, the researchers found that BCL-2 family proteins play a key role in senescence survival.
Researchers reveal senescence's impact on liver health, from repair and regeneration to chronic disease progression. Emerging therapies, such as senolytic treatments, aim to selectively eliminate senescent cells while preserving healthy tissue.
A recent study led by University of Oxford researchers found that old male fruit flies' reproductive success declines due to seminal fluid limitation, not sperm quantity. Supplementation with young males' seminal fluid rescued aged males' fertility, highlighting the importance of seminal fluid quality in animal fertility.
Researchers developed a new tool to measure biological aging in individual cell types, providing insights into diseases like Alzheimer's and liver pathologies. The study found that certain brain cells and liver cells show signs of accelerated aging, making it a better tool for detecting diseases.
Researchers discovered that Prostaglandin E2 drives skin cells to age and enables some of these cells to become pre-cancerous, leading to increased cancer risk. The study found that blocking PGE2 reduced the chances of aged cells becoming precancerous.
A University of Minnesota Medical School research team found that social stress causes DNA damage and senescence in preclinical models, accelerating aging. The study highlights a potential way to understand how life stress impacts the aging process.
Researchers developed an in vitro model of murine peritoneal macrophage aging to study molecular mechanisms and develop innovative strategies. Chronic treatment with CB3 completely prevented the increase of p21CIP1 and maintained proliferative activity in day 14 macrophages.
Researchers found that ACLY activity activates the senescence-associated secretory phenotype (SASP), a pro-inflammatory environment associated with chronic inflammation and aging. Blocking ACLY activity reduces inflammation-related genes in aged cells, suggesting a potential strategy for managing aging and age-related diseases.
A new epigenetic clock based on cheek cells accurately predicts mortality risk, outperforming previous clocks trained on blood data. The study found that specific methylation sites are linked to human mortality, and future research is needed to identify associations with age-related diseases.
A new study found that 2-bromopalmitate treatment reverses cell senescence in human vascular smooth muscle cells, reducing DNA damage markers and promoting cell proliferation. The research suggests a critical role for protein palmitoylation in regulating the senescent phenotype.
A new study reveals a link between senescent cells and the protein HIRA, which helps pack and unpack DNA. The research team discovered that HIRA is necessary for the cells to begin emitting inflammatory molecules, leading to chronic inflammation in the body.