A recent study found that mice carrying a set of friendly microbes fail to develop a proper immune system, highlighting the importance of host-specific microbiota. The researchers suggest that a coevolved relationship between humans and their gut microbiome may be compromised by modern lifestyle factors.
A new gene-silencing strategy has reversed core symptoms of Huntington's disease in animal models, suggesting a potential treatment approach for the neurodegenerative disorder. The therapy, involving antisense oligonucleotides, produced sustained benefits with minimal side effects.
Researchers have successfully formed human-derived stem cell tissue resembling the retina, a breakthrough that could lead to new treatments for visual impairments. This achievement uses optimized cell culture methods and demonstrates the potential of human embryonic stem cells for regenerative medicine.
Researchers discovered that pancreatic cancer cells produce a protein that tricks the immune system into helping cancer growth. Blocking this protein may lead to effective treatments for pancreatic cancer. The findings suggest restoring the antitumor properties of a patient's immune system could be a therapeutic strategy.
A natural milk ingredient called nicotinamide riboside has been found to protect against obesity in mice. It works by boosting levels of NAD+, a molecular sidekick for SIRT1, which helps with metabolism and longevity.
Researchers found that flies lacking a key gene associated with RLS exhibit sleep disturbances and restlessness, similar to human patients. The study suggests a genetic basis for RLS and offers new insights into the disease's pathophysiology.
A study found that marine reserves on Australia's Great Barrier Reef produce approximately half of all juvenile recruitment to both reserve and fished reefs. The reserves, which account for just 28% of the local reef area, help sustain valuable fisheries.
A recent study has identified more than 40 genetic regions influencing fertility in Hutterite men, which may shed light on unexplained cases of male infertility. The research also found nine genetic regions impacting sperm quality in non-Hutterites.
Researchers discovered an anti-psychotic drug, thioridazine, that selectively targets and exhausts cancer stem cells, leading to improved survival rates in leukemia patients. The compound works by encouraging cancer stem cells to differentiate into less threatening cell types.
A team of researchers has identified 24 compounds as responsible for the distinct flavors and aromas of heirloom tomatoes. These findings hold promise for improving the flavor of commercially grown tomatoes.
Researchers have successfully transplanted embryonic cells into adult mouse spinal cords to alleviate persistent pain. The study suggests that this approach may not only treat symptoms but also correct underlying disease pathology. This new therapy offers hope for patients with neuropathic pain, a condition with limited treatment options.
Researchers discovered a link between a protein called BAD and glucose metabolism in the brain, finding that modifications to this protein reduced seizure susceptibility. The study suggests that targeting BAD could lead to new treatments for epilepsy.
Researchers found that mental distractions, especially those requiring cognitive effort, reduce pain perception by inhibiting early spinal cord responses to painful stimuli. This effect is mediated by endogenous opioids, naturally produced by the brain.
Researchers found that mice on a high-fat diet who ate in restricted eight-hour windows gained less weight, suffered less liver damage, and had lower levels of inflammation compared to those with unrestricted access. The study suggests that our body clocks may be out of sync with our eating habits, leading to metabolic issues.
A new study describes a compound that selectively kills cancer cells by restoring the structure and function of mutant p53. This finding supports the development of rationally targeted cancer therapies and has potential for treating 30,000 patients annually in the US.
Chimpanzees exhibit fine-scale cultural differentiation, with neighboring groups preferring different tools for cracking nuts and varying in hammer size. These differences are maintained even among individuals moving between communities.
A large-scale study found social jetlag contributes to obesity by making people chronically sleep-deprived, increasing smoking and drinking, and living 'against the clock'. The syndrome, mismatching internal and daily schedules, affects modern society's health.
Researchers found that reducing hippocampal activity improved performance on a memory task in patients with amnestic mild cognitive impairment. Elevated activity in this brain region is often seen in disorders associated with an increased risk for Alzheimer's disease.
A mathematical model suggests that sauropods could have produced more methane than all modern sources combined. The study calculates global methane emissions from sauropods to be around 520 million tons per year, comparable to total modern methane emissions.
Researchers found a critical gene responsible for human brain features, duplicated around two million years ago. The partial copy's interaction with the original gene likely enabled cognitive changes and neuron development benefits.
Researchers discovered that embryo brains exhibit waking-like activity up to 20% into the final stage of embryonic life, followed by emergence of sleep patterns. This finding may have significant implications for understanding complex fetal learning and developmental consequences in premature infants.
Researchers reveal that Langerhans cells can perform either immunosuppressive or immunostimulatory functions depending on the situation. They found that LCs induce proliferation of regulatory T cells to maintain tolerance under normal conditions, but also stimulate protective immune responses against pathogens.
A study in Cell Metabolism resolves controversy over resveratrol's life-extending effects by demonstrating that the ingredient's benefits require the SIRT1 gene. The research also clarifies resveratrol's dose-dependent action on SIRT1 and other proteins.
Researchers argue that a youthful brain can be maintained through engagement and lifestyle choices, rather than just compensating for age-related decline. Engagement, including social, mental, and physical stimulation, has been shown to promote better cognitive performance in older adults.
A new treatment for argininosuccinic aciduria (ASA) has been discovered through nitric oxide supplementation. The study found long-term heart and neuropsychological improvements in mice and humans afflicted with ASA, a genetic metabolic disorder that causes ammonia accumulation and liver and nervous system damage.
Researchers have devised a new method for producing genetically modified animals using haploid embryonic stem cells, which may enable genetic modification of animals that can't be modified by today's means. The technique could also potentially be used in assisted human reproduction for those affected by genetic disease.
Research identifies specific genetic mechanism underlying autism and fragile X syndrome, suggesting gene dosage disruption as key factor in autism development. The study found a strong overlap between autism candidate genes and those linked to fragile X syndrome, with implications for therapy and diagnosis.
Researchers have discovered a new and improved version of an enzyme that can detoxify deadly nerve agents, such as sarin. The PON1 variant shows 40-3,400-fold higher efficiency in metabolizing the three most toxic G-type nerve agents.
Researchers identify non-classical oncogenes critical for leukemia cell survival and develop a strategy targeting these molecules, potentially reducing toxicity of current treatments. Dual inhibition of PI3K subtypes supports cancer cell death in mice and human tumor cells.
A study published in Current Biology found that 2-year-olds and chimpanzees tend to copy actions when repeated by three peers, not just one, suggesting a shared strategy for social learning. This phenomenon also applies to orangutans, but to a lesser extent.
Research reveals that corals can adapt to changing ocean conditions by shifting species composition, which could help reefs survive climate change. However, this shift may lead to loss of habitat for fish and other marine life.
A recent study reverses many Fragile X syndrome symptoms in adult mice using a new compound CTEP. The study found that pharmacologic inhibition of mGlu5 receptor can correct FXS symptoms, including learning and memory deficits and auditory hypersensitivity.
A 'brain-only' mutation has been discovered that causes hemimegalencephaly (HMG), a condition characterized by an enlarged and dysfunctional half of the brain. This mutation is limited to brain tissue and contributes to overgrowth, intellectual disability, and severe epilepsy.
Research reveals a heightened sensitivity to cheap, high-calorie foods in individuals prone to obesity. Brain imaging studies show that obese individuals exhibit greater brain activation in response to sweet or fatty food cues.
Researchers found a causal connection between early problems with visual attention and later dyslexia diagnoses. Visual attention deficits were more predictive of reading disorders than language abilities at the prereading stage.
A combination approach therapy targeting β-catenin pathway may stamp out CML for good. Leukemia stem cells are vulnerable to treatments aiming at this pathway, unlike normal blood stem cells.
Researchers have discovered a hormone that can be produced by fat stem cells to lower blood sugar levels and improve metabolism. The hormone appears to bypass the need for insulin, sending glucose out of the bloodstream and into muscle cells.
Rapamycin, a widely used cancer and transplant drug, leads to diabetes in 15% of patients due to its effect on muscle cells' insulin signal. Researchers discovered that a single transcription factor, YY1, plays a key role in this process. Mice lacking YY1 are protected from diabetes when taking rapamycin.
Cell Press has introduced a new career network to facilitate the discovery of best jobs for life scientists. The site offers improved navigation, advanced resources, and an expanded resume option.
Bilingualism has been shown to improve cognitive reserve and sustain better cognitive performance throughout the lifespan, potentially delaying dementia onset. Lifelong experience managing multiple languages reorganizes specific brain networks, creating a more effective basis for executive control.
A new study identified a key mechanism driving breast cancer invasion and linked it to ErbB2 amplification and cathepsin expression. This research offers insights into the molecular basis of ErbB2-induced malignancy and potential therapeutic targets for treatment-resistant forms.
Two studies published in Neuron have developed groundbreaking models that predict the landscape of degeneration in various forms of dementia. The models, which focus on structural and functional connectivity networks, suggest that dementias target specific networks of neurons linked by connectivity rather than spatial proximity.
Researchers found that giant squids' large eyes are better suited for spotting large objects, like whales, rather than average prey. Their 10-inch eyes allow them to see predators from a distance despite the dim light of their underwater habitat.
A study using integrative Personal Omics Profiling (iPOP) combines genome sequencing, disease risk analysis, and molecular measures to capture changes in human biology. The researchers observe tens of thousands of components over two years, revealing dynamic molecular-level changes that provide meaningful physiological information.
Researchers have solved the atomic structure of closed plasminogen, a key player in the clot-busting process, revealing an 'Achilles' heel' that proteins bind to when it opens up. This discovery may lead to more effective clot-busting drugs for treating heart attacks and strokes.
Scientists discovered an effective way to eliminate a persistent form of HIV-1 through vaccination strategy. The research found that heightened immune response prior to virus reactivation facilitates the elimination of latent viral reservoir, paving the way for true eradication.
A new study suggests that egocentric behavior in children is linked to an immature prefrontal cortex, rather than a lack of understanding of fairness. Researchers found age-related increases in strategic decision-making between ages 6-13 years, with improved impulse control and brain activity in the left dorsolateral prefrontal cortex.
Research reveals that repeated stress affects memory by reducing glutamate receptors in the prefrontal cortex, impairing high-level cognitive processes. The study provides critical insight into how chronic stress influences mental illnesses and offers potential targets for prevention and treatment.
Researchers discovered that mice with an extra copy of the tumor suppressor Pten gene experience hyperactive brown fat, burning energy instead of storing it. This leads to improved metabolic balance, reduced insulin resistance, and lower liver fat, contributing to longer lifespan and cancer prevention.
Researchers discovered that exercise alters DNA molecules within muscles, leading to improved strength and metabolism. The study also found that caffeine can mimic this effect, suggesting a potential alternative to traditional exercise for some individuals.