Articles tagged with Telomeres
Researchers at the University of Pittsburgh School of Medicine discovered an unexpected chromosome interaction between telomeres and centromeres in some aggressive cancers. This interaction creates a genetic signature that could help identify ALT-positive tumors, which are often challenging to treat due to genomic instability.
Researchers identify genetic syndrome where unusually long telomeres predispose individuals to lymphoma and other cancers. Inherited loss-of-function mutations in the POT1 gene disrupt normal aging of lymphocytes, allowing cancer-associated changes to accumulate over time.
The study reveals that human TERT is only compatible with non-human primate cells, while other species show limited or no telomere lengthening. This highlights the importance of using suitable preclinical models for telomerase-based therapies.
Researchers have produced complete genome sequences for six peanut varieties, identifying two candidate genes linked to oil content and seed size. These findings provide a comprehensive blueprint for future peanut breeding and improvement strategies.
Researchers developed a computational tool that infers telomere length from structural changes in cells and tissues captured in medical biopsies. The TLPath model accurately predicts telomere length, providing new opportunities for studying human aging.
A new study reveals that shorter early-life telomeres are associated with higher survival rates in black-legged kittiwakes. In contrast, larger individuals tend to have shorter telomeres, suggesting a trade-off between growth and telomere maintenance.
Flinders University researchers discovered a biological process that could explain some stillbirths and pave the way for early detection. The study found that molecules called circular RNAs build up in the placenta too quickly during pregnancy, compromising its ability to nourish the baby.
A new study in Molecular Cell reveals that cellular aging is controlled by the ATM kinase response to withered telomeres. Cells grown under low oxygen conditions are more tolerant of short telomeres, while high oxygen accelerates cellular aging due to hyperactive ATM.
Drinking 3-4 cups of coffee a day may slow the biological ageing of people with severe mental illness by lengthening their telomeres, equivalent to 5 extra biological years. However, no such effects were observed beyond this daily amount.
A new study finds that rare and common genetic variants counterbalance each other to maintain telomere stability. The researchers used data from 379,764 participants and found a compensatory genetic mechanism that prevents extreme shortening or lengthening of telomeres.
Researchers have identified replication protein A (RPA) as an essential protein for maintaining telomeres, which are protective caps at the ends of chromosomes. This discovery has significant implications for understanding and treating diseases caused by shortened telomeres, such as aplastic anemia and acute myeloid leukemia.
Researchers found that TRF1 protein loss led to leaner mice with altered metabolic profiles, including lower LDL cholesterol levels and improved blood sugar regulation. These benefits occurred without any detectable shortening of telomeres.
A research team has found that vital RNA needed to maintain telomeres in roundworms exists inside another gene's intron. This discovery suggests a common strategy for anti-aging therapies and regenerative medicine in humans, and could support species survival.
A groundbreaking study by Florida Atlantic University researchers found that working with service dogs can slow cellular aging in female veterans. The study, which involved female veterans with post-traumatic stress disorder, revealed promising biological benefits associated with service dog training.
Researchers discovered a mutation in the POT1 gene that prevents telomeres from repairing, leading to pulmonary fibrosis. This study highlights the importance of personalising treatments for diseases caused by dysfunctional telomeres.
Research by University of Pittsburgh scientists discovered that damaging telomeres can lead to dysfunctional T cell function. To combat this, they developed a targeted antioxidant approach that rescued T cell function, opening the door for novel therapies in cancer immunotherapies.
Researchers at Boston Children's Hospital have developed a new approach to lengthening telomeres using synthetic RNA. The technique, known as eTERC, has been shown to increase telomere length in human stem cells and leave normal cell mechanisms intact. Additionally, polygenic scores have been developed to estimate the combined effect o...
Chronic health issues may emerge from long-term obesity in young adults, leading to epigenetic alterations, telomere attrition, and impaired nutrient sensing. The study found a significant association between long-term obesity and accelerated biological aging, highlighting the importance of addressing obesity early on.
A new molecular tool, BLOCK-ID, has been developed to study the alternative lengthening of telomeres (ALT) pathway in cancer cells. The tool allows researchers to monitor protein interactions and identify essential proteins like TRIM24, which play a crucial role in ALT telomere maintenance.
A new study found that telomere shortening is not a shared characteristic of all progeroid syndromes, which cause individuals to display symptoms of aging far earlier than expected. The research suggests that the underlying biology of each syndrome plays a crucial role in determining whether telomere shortening occurs.
Research from Mass General Brigham found that individuals with shorter telomeres and less optimal lifestyle choices are at greater risk for stroke, dementia, and late-life depression. However, those with healthier lifestyles showed no increased risk, suggesting a potential mitigation effect.
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.
A study using NHANES data found that inflammation, rather than diet and exercise, has the strongest association with telomere shortening. Managing chronic inflammation may be key to preserving telomere length and promoting healthy aging.
Researchers have discovered that the earliest days of embryo development impact a person's future health and aging. Cellular processes within the egg at fertilization determine telomere length in offspring, increasing lifetime risk of chronic diseases.
Researchers at Washington State University have created genetically engineered mice with human-like short telomeres, enabling the study of cellular aging as it occurs in humans. The new mouse model, called HuT mice, has significant implications for anti-aging research and cancer treatment.
A preliminary study found that shorter protective caps at the end of chromosomes (telomeres) may be more likely to develop age-related brain diseases such as stroke, dementia, and late-life depression. Adopting healthier lifestyles could lower the negative effects of shorter telomeres.
Researchers discovered TERT gene activation as a key factor in determining the clinical course of pulmonary carcinoid tumours, with aggressive growth linked to telomerase activation. The study aims to improve treatment planning and targeted therapeutic strategies for cancer types.
A new study found that cystic fibrosis patients with more severe disease characteristics exhibit shorter leukocyte telomere length and greater LTL attrition. This association may accelerate aging and increase susceptibility to age-related diseases, emphasizing the importance of early CF diagnosis and timely therapeutic intervention.
Researchers found that osteoporosis is independently associated with rapid leukocyte telomere length shortening over a 2-year period. A total of 233 subjects were enrolled in the study, and multivariable linear regression analysis indicated that only osteoporosis was significantly linked to LTL shortening.
Telo-seq reveals dynamic mechanisms of telomeres in aging and cancer, providing new insights into their role in health and disease. The breakthrough method determines telomere length and sequence on individual chromosomes.
A new study published in Cell demonstrates that CST is recruited to the end of the telomere and regulated by subtle chemical changes made to POT1, a protein in the shelterin complex. This finding provides new insight into human telomeres function at the molecular level, with implications for numerous diseases and disorders.
A new study found that PARP1 is involved in the repair of telomeres, which can lead to genomic instability and cancer. Impairing this process can lead to telomere shortening and increased risk of cancer. The findings challenge existing dogma and open up new possibilities for improving cancer therapies.
A recent study found that malaria endemicity is negatively associated with leukocyte telomere length in sub-Saharan African populations. Genetic factors explain roughly half of the variation, but environmental factors like malaria may also play a role.
Researchers found that people on caloric restriction lost telomeres more rapidly at first and then more slowly after their weight stabilized. The two-year timeline was not sufficient to show benefits, but those may still be revealed in longer-term data collection.
Researchers investigated the impact of senolytic treatments on DNA methylation clocks and epigenetic age. Results showed significant increases in epigenetic age acceleration with Dasatinib and Quercetin treatment, but not with Fisetin addition.
Scientists have discovered two new end-replication problems in DNA replication, affecting both the leading and lagging strands. This revelation changes our understanding of telomere biology and may hold clinical implications for individuals with telomere disorders, such as Coats plus syndrome.
Researchers found GV1001 decreases BACE and Aβ1-42 levels, reducing neurodegeneration and senescence in 3xTg-AD mice. It also increases survival, telomere length, and telomerase activity, contributing to improved lifespan.
Researchers discovered that ATR kinase inhibits telomerase, preventing it from adding excessive telomeres to damaged DNA. This finding has implications for optimizing CRISPR techniques and studying cancer.
The study provides the first complete Chinese soybean cultivar T2T genome, filling gaps in previous analyses and identifying novel genes and genetic variants linked to desirable traits. This comprehensive analysis accelerates soybean breeding programs to develop new cultivars with improved yields, resistance, and adaptability.
Researchers developed a mouse model with human-like telomeres by making a single genetic alteration, providing a valuable resource for studying aging and cancer. The discovery highlights the importance of the RTEL1 protein in determining telomere length.
A new study found that residents of neighborhoods with more greenspace tend to have longer telomeres, indicating better cellular health. However, the positive impact of greenspace is not enough to compensate for other environmental challenges like air pollution and racial segregation.
A large-scale study of the UK Biobank data found that shorter white blood cell telomeres are associated with a higher risk of dementia, including Alzheimer's disease and vascular dementia. Telomere length was also linked to smaller total brain volume and reduced brain structure.
A study of nearly 500,000 participants found that smoking shortens telomere length in white blood cells, a indicator of aging and cell regeneration. The more cigarettes smoked, the stronger the shortening effect, suggesting a link between smoking and accelerated aging.
The study presents a telomere-to-telomere haplotype-resolved reference genome of 'Baxijiao' triploid Cavendish banana. The genome consists of three haploid assemblies with varying sizes and repetitive regions, including expansions of gene families related to fruit quality, aroma, and anther/pollen development. Additionally, the genome ...
Researchers found that telomere shortening, a biomarker of cellular aging, accelerated in untreated obstructive sleep apnea patients. However, continuous positive airway pressure (CPAP) attenuated this damage. The study suggests that CPAP can reduce inflammation and oxidative stress, leading to slower aging.
A new study found that high-stress caregivers had higher klotho levels and longer telomeres in specific immune cells, which may provide protection against aging. In contrast, low-stress caregivers showed no significant associations between klotho levels and telomere length.
Researchers at Nanyang Technological University discover ponatinib, an existing cancer drug, can block key steps in alternative lengthening of telomeres (ALT) mechanism. This could lead to new treatment options for ALT cancers, which currently lack targeted therapies.
Researchers found a link between short telomeres in ATII cells and lung fibrosis in post-COVID-19 patients. The study revealed loss of ATII cellularity and shorter telomeres concomitant with increased fibrotic lung parenchyma remodeling.
Researchers have studied targeting telomeres as a potential therapeutic strategy for non-small cell lung cancer. Telomere dysfunction and telomerase deficiency slowed tumor progression, increasing vulnerability to DNA damage and immune system response.
A new study of over 200 people with premature aging syndromes caused by abnormally short telomeres suggests that chromosomal instability may not be the reason for increased cancer risk. Instead, immune system cells that age and die prematurely may play a role in cancer predisposition.
A new study links shorter telomeres to multiple changes in the brain associated with dementia, including reduced grey matter volume and a thicker cerebral cortex. Longer telomeres were found to be protective, reducing the risk of dementia but not stroke or Parkinson's disease.
Researchers discovered that telomere shortening is associated with early subjective depressive symptoms and cognitive complaints among healthy elderly individuals. The study also found a link between telomere shortening and increased interleukin-6 levels.
Salk scientists discovered that when telomeres become very short, they communicate with mitochondria, triggering an inflammatory response. This process destroys cells that could become cancerous, preventing cancer formation. The findings highlight the importance of studying interactions between telomeres, mitochondria, and inflammation.
Researchers at the University of Pittsburgh School of Medicine have discovered a genetic link between melanoma tumors and telomere maintenance, which could lead to new treatments for the disease. The study found that mutations in the TPP1 gene stimulate telomerase activity, promoting long telomeres that enable cancer cells to divide in...
Researchers at CNIO have identified alveolar type II pneumocytes as the primary cell type responsible for developing pulmonary fibrosis. The study reveals that targeting these cells through telomere-based therapy may lead to a breakthrough in treating this debilitating disease.
Scientists from NTU Singapore have discovered that telomeres are stacked in columns like a spring, leaving DNA exposed to damage. This finding could improve understanding of how humans age and develop cancer, with potential treatments for diseases caused by dysfunctional telomeres.
Researchers analyzed data from over 3,000 participants and found no association between electrocardiogram measures and telomere length. The study suggests that ECG prolongation is age-dependent but not a marker of biological aging.
A recent study published in Cancer Research identified a unique vulnerability in certain high-risk cancers that can be exploited for targeted therapy. Researchers found that cancer cells with alternative lengthening of telomeres (ALT) have a common weakness, leading to resistance to DNA-damaging agents and chemotherapy.
Researchers have discovered the mechanism behind enzyme Polα-primase and protein CST's interaction at the ends of chromosomes. The findings reveal an unprecedented role for CST in facilitating Polα-primase activity, shedding light on telomere replication and cell division.
Scientists from A*STAR and NUS Cancer Science Institute identified a key cancer progression mechanism that could lead to more effective treatments. The discovery involves reactivating the hTERT gene, which is responsible for prolonging telomeres in cancer cells.