Scientists have reprogrammed mouse fibroblasts to create whole mice using tetraploid complementation, a significant advancement in understanding induced pluripotent stem cells. This achievement offers hope for overcoming embryo destruction in pluripotent cell derivation and potentially revolutionizing regenerative medicine.
Researchers have devised a new method to fix a broken heart by coaxing adult heart muscle cells into reentering the cell cycle, allowing them to divide and regenerate healthy heart tissue. The key ingredient is neuregulin1, which may one day be used to treat failing human hearts.
Research demonstrates single neurons process future rewards, including information about upcoming gains, and prefer advance info over suspense. This finding suggests a revised theory of reward is needed, incorporating information seeking as a cognitive reward.
PEDF, secreted by fat cells, leads to insulin resistance and dyslipidemia. Blocking PEDF action may reverse health complications associated with obesity.
A study published in Cell Metabolism identifies 20 genes that regulate cellular cholesterol levels, potentially pointing to new risk factors for cardiovascular disease. These findings may also pave the way for new cholesterol-lowering drugs.
Researchers have identified key signals supporting long-term survival of breast cancer cells after they spread to the bone marrow. The study found that activity of a cancer-related enzyme called Src is associated with late-onset bone metastasis and promotes cell survival.
Researchers have discovered a molecular tool that selectively attacks human cancer cells, showing promise in treating human acute myeloid leukemia. The therapeutic approach exploits the high expression of CD123 on leukemia stem cells, targeting these critical cells to improve survival rates.
Researchers found that when people believe another person cannot see, the effects of adaptation are greatly reduced, suggesting a bi-directional relationship between gaze processing and mental-state attribution. This discovery could lead to a better understanding of what goes wrong in individuals with autism.
Researchers used a 'neurologger' device to record pigeon brain activity while flying over familiar terrain. The study found that pigeons respond to visual cues with distinct brain patterns, including high-frequency oscillations reflecting memory processing.
Researchers engineered mice with a duplication of the autism-linked chromosomal region and found they exhibited behaviors associated with human autism, including poor social interaction and repetitive behavior. The study provides a valuable model for therapeutic development and sheds light on the molecular pathways underlying autism.
Rhesus monkeys demonstrate configural face perception, recognizing friends from foes based on facial feature layout. This ability has been conserved through primate cognitive evolution for 30 million years.
Researchers have discovered a new link between soluble amyloid beta protein and synaptic injury in Alzheimer's disease. The study reveals that amyloid beta enhances long-term synaptic depression through altered glutamate uptake at hippocampal synapses.
Research reveals hypnosis induces disconnection of motor commands from normal voluntary processes through executive control and self-image circuits. The study used fMRI to test neural effects of hypnotic paralysis on brain activity, finding enhanced activation of the precuneus region involved in memory and self-imaging.
A study published in Current Biology confirms that our brains temporarily represent used tools as part of our body schema. This phenomenon affects how we move and perform tasks, with participants exhibiting altered arm movements and perception after tool use.
Research reveals that street lights disrupt the navigation and flight patterns of slow-flying woodland bats, causing them to stray from their preferred routes and face increased predation risk. The study highlights the importance of adopting species-specific approaches to understanding the consequences of artificial light pollution.
Researchers discovered that mother mice exhibit increased call-evoked inhibition in response to pup isolation calls, allowing for more effective detection in noisy environments. This neural plasticity improves the contrast between high-ultrasonic and lower-frequency neural populations.
Researchers uncover neural mechanism supporting adaptability and decision-making under uncertainty, with the frontal lobe playing a critical role in tracking evidence and switching behavior.
Research shows that in one lizard species, bigger eggs tend to produce females and smaller eggs tend to produce males. This discovery contradicts the long-held assumption that genetic factors control sex determination in reptiles.
A study analyzing tickle-induced vocalizations in infant and juvenile great apes, as well as human infants, found a common evolutionary origin for laughter. The researchers discovered that laughter evolved gradually over the last 10-16 million years of primate evolution, with humans exhibiting acoustically distinct features.
A study published in Current Biology confirms that parts of the brain responsible for object processing also activate when individuals touch objects. Despite struggling with visual input, HJA showed activity only for tactile objects, suggesting a direct connection between the sense of touch and object recognition.
A new experimental mouse model has been developed to investigate mechanisms of antidepressant action, revealing both neurogenesis-dependent and -independent pathways. The study found that chronic antidepressant treatment reversed behavioral dysfunctions in mice, but only when hippocampal neurogenesis was allowed to occur.
Researchers used fMRI to study participants engaging in a complex risky choice task, revealing different brain regions predicting specific choices and individual strategic biases. The findings indicate that the neural mechanisms of choice reflect more than competition between decision variables.
Scientists have identified genetic mutations on chromosome 17q24.2-q24.3 as responsible for Congenital Generalized Hypertrichosis Terminalis (CGHT), a rare condition characterized by excessive hair growth and facial distortion. The discovery provides new insight into the molecular mechanisms underlying this condition.
Researchers discover 'happyhour' gene linked to alcohol sensitivity in flies and mice, suggesting cancer drugs like erlotinib could help treat alcoholism. Flies with mutant happyhour gene become resistant to alcohol's sedative effects, while rats treated with erlotinib consume less alcohol.
Researchers found that birds in more unpredictable climates have more impressive singing skills, likely as a way to attract mates. The study suggests that this phenomenon may be an evolutionary adaptation for traits like language and music.
A recent study reveals that honeybee populations are increasing worldwide, contrary to concerns of a 'pollination crisis'. However, the demand for crops relying on insect pollination has more than tripled over the last half century.
Basking sharks, the world's second-largest fish, migrate through tropical waters of the Atlantic Ocean during winter, defying previous notions of their habitat. This discovery highlights the need for coordinated conservation efforts to protect this threatened species.
A new study reveals the source of silkworms' attraction to mulberry leaves is a jasmine-scented chemical called cis-jasmone. The potent attractant triggers a highly tuned olfactory receptor in the silkworms' antennae, guiding them towards the food source.
A new study on blue tits reveals that eggs fertilized by non-social partners tend to hatch earlier, with nearly 75% of extra-pair offspring produced in the first half of the clutch. This suggests that early hatching may be a key factor in the observed superiority of extra-pair offspring.
Parkinson's disease is characterized by selective loss of dopamine neurons in the substantia nigra, with elevated cytosolic dopamine and calcium levels contributing to cell death. Genetic and environmental 'hits' are required for PD pathology, suggesting multiple therapeutic targets should be considered
A new study found that neurons in the visual word form area of the left visual cortex prefer individual real words over pronounceable nonsense words. This discovery supports experience-driven tuning of neurons to real words and provides evidence for neural plasticity beyond lower-level representations.
The study suggests that neural pathways governing sensory and motor associations accomplish task switching through learning and communication of distinct populations of MT neurons into a downstream decision system. This finding is important for understanding both normal cognition and psychiatric disorders.
Studies using brain imaging have identified distinct regional vulnerabilities within five intrinsic networks, suggesting a class-wide phenomenon of network degeneration. These findings support the hypothesis that spatial patterning of disease relates to structural or physiological aspects of neural network biology.
Researchers discover adenylylation, a unique post-translational modification, regulates cell signaling by inactivating key proteins. This discovery opens new avenues for exploring bacterial pathogenesis and potential therapeutic targets.
Scientists have developed a new approach to survey phosphorylation in cells, revealing a previously uncharacterized protein that plays a crucial role in cancer cell invasion. The study identified ninety phosphorylation events regulated by oncogenic B-Raf and found that one target, MINERVA/FAM129B, is involved in melanoma progression.
A new study published in Cell Metabolism suggests that a fat-derived inflammatory factor, CXCL5, plays a key role in insulin resistance and obesity-related diseases. The researchers found that CXCL5 is produced by fat tissue and is linked to the development of various conditions, including pulmonary disease, lung cancer, and arthritis.
A new study reveals that high-fat diets supplemented with extra branched chain amino acids can lead to insulin resistance and diabetes in rats. The researchers found that BCAA tend to climb along with insulin resistance, and its effects are exacerbated when combined with high fat consumption.
A new study has identified a biomarker, ZNF423, associated with poor outcome in neuroblastoma, the most common childhood cancer. Reduced expression of ZNF423 was linked to increased growth and resistance to differentiation in tumor cells.
A study identifies RNF6 as a protein that modifies androgen receptor activity in hormone-refractory prostate cancer. Inhibition of RNF6 shows promise as a new strategy for treating advanced prostate cancer, which no longer responds to traditional therapies.
Researchers found that jackdaws, a type of bird, are sensitive to human eye orientation and use it to communicate, particularly when seeking food or interacting with potential threats. The birds' ability to interpret human gestures, such as gaze alternation and pointing, suggests a high level of cognitive awareness.
A new dual therapy approach generates new blood vessels and improves cardiac function following a heart attack, overcoming current stem-cell-mobilizing therapies' ineffectiveness in humans. This strategy stabilizes SDF-1 and enhances the recruitment of EPCs to damaged heart tissue.
A new study identifies chondrogenic progenitor cells (CPCs) in late-stage osteoarthritis cartilage with migratory capabilities and tissue-specific stem cell characteristics. The CPCs may be recruited to degenerating cartilage, offering a potential regenerative therapy for arthritis.
Researchers discovered that growing mouse skin cells in spheres can lead to generation of cells with properties of cancer stem cells. The study found that mutation of the retinoblastoma tumor suppressor gene family led to reprogramming of differentiated cells into cancer stem cells.
Researchers found that a gene called Nurr1 limits pro-inflammatory neurotoxic mediators in microglia and astrocytes, suggesting a link between inflammation and Parkinson's disease progression. The study may point to new avenues for therapy and anti-inflammatory treatments to combat the disease.
Scientists have discovered that the hippocampus works in a structured and predictable way, enabling them to predict where someone is standing within a virtual reality room based on brain activity. The findings offer compelling evidence for mindreading and could potentially decode individual episodic memory traces from human brain imaging.
A study published in Current Biology found that people with dyslexia have a different brain activation pattern when integrating letters with speech sounds. This neural deficit may distinguish poor from good readers and offer a promising link to phonology processing difficulties.
Recent research reveals that migraine mice have an imbalance in excitation and inhibition, leading to increased neuronal activity. Glutamate release is found to be elevated, facilitating the propagation of cortical spreading depression (CSD), a phenomenon linked to migraine aura.
A new study reveals that reward-induced stimulus pairing can elicit visual learning in adults without conscious awareness of the stimulus presentation or reward contingencies. This suggests that automatic reinforcement mechanisms rather than directed attention drive improvements in sensory skills.
A new study reveals that standard brain tumor treatment may increase the number of cancer stem-like cells, making patients more vulnerable to tumor recurrence. Researchers found that a common chemotherapy drug, temozolomide, increases the aggressiveness of surviving cancer cells.
A new study in mice reveals that a gene called PGC-1b plays a key role in the development of insulin resistance caused by high fructose intake. The researchers found that blocking PGC-1b activity improved metabolic profiles and reversed fructose-induced insulin resistance.