Articles tagged with Human Genetics
Genetic analysis reveals Australian Aborigines originated from south Asia, tracing back to Indian populations with exclusive mutations. This discovery supports archeological evidence of human occupation in Australia dating back to approximately 45 thousand years ago.
A new gene, RCP, has been identified as a potential breast cancer-promoting gene, with overexpression causing tumor cell characteristics and metastasis. Targeting RCP may provide a way to inhibit the known tumor-promoting pathway through activation of the RAS signaling pathway.
Researchers at Yale University School of Medicine and the University of California Davis have discovered a protein, PRCP, that regulates appetite suppression by breaking down alpha-MSH in mice. Administration of PRCP inhibitors reduced food intake in both normal and obese mice.
Scientists have identified three previously unknown genes in E. coli that are essential for the survival of the bacteria and one out of the three could be implicated in cancer or developmental abnormalities in humans. These genes are also found in numerous other creatures, suggesting a vital role for them across many species.
Researchers at UT Southwestern Medical Center have discovered a gene that activates in mouse embryonic stem cells, allowing them to grow and divide rapidly in the lab. This breakthrough could enable scientists to maintain ES cells from other species, leading to new discoveries in medical research.
Variations in the T1R3 gene correspond to individual differences in sensitivity to and perceived intensity of umami taste. The study found that certain people are highly insensitive to umami, making it difficult for them to detect low levels of this taste quality.
Researchers identified CST5 as a candidate tumor suppressor gene induced by vitamin D3 in human colon cancer cells. The protein cystatin D inhibits cancer cell growth and is responsible for some of vitamin D3's anticancer effects.
A new study identifies a genomic fragment that reduces the effect of a type 2 diabetes risk gene in mice. The researchers found that this fragment, known as a 'jumping gene,' diminishes the activity of the risk gene Zfp69. In overweight individuals with diabetes, the human equivalent of this gene is highly active.
A new study found that blood stem cell growth factor (GCSF) reversed memory impairment in mice with Alzheimer's disease by reducing beta amyloid deposits and promoting new neuron production. The treatment showed promising results in both bone marrow and brain, offering a potential therapy for the disease.
Researchers found that human female embryos inactivate one X chromosome prior to implantation, which may affect laboratory culture conditions and embryo survival. This process is thought to have remained unchanged throughout evolution and has implications for human embryonic stem cell research.
Researchers at Duke University have found that variation in a single gene influences baboons' susceptibility to a closely related parasite, similar to its impact on humans. The study's findings provide a unique example of how the same genetic mechanism can confer resistance to different parasites.
Researchers discovered that variation in the same gene affects disease resistance in both humans and baboons, with 60% of Amboseli baboons infected with a malaria-like parasite. The findings provide new insights into the genetic basis of differences in vulnerability to infection.
The National Institutes of Health has awarded Washington University School of Medicine four grants totaling $19 million to explore the human microbiome. The researchers aim to catalog microbes found in various body sites and determine their links to good health and disease.
Researchers reject popular DNA analysis suggesting humans are closely related to chimpanzees, proposing a new grouping for humans, orangutans and common ancestors. A scenario of the migration and evolution of 'dental hominoids' is presented.
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.
Researchers found that human friendship is linked to cognitive mechanisms creating a ready-made support group, prioritizing helpful individuals in conflicts. The Alliance Hypothesis suggests friendships prioritize mutual care over reciprocal benefits.
Researchers aim to identify genetic signals for regeneration in salamanders, a model for human limb growth, with the goal of developing therapies to enhance regenerative response. The team hopes to create a comprehensive database of genes involved in regeneration to inform how to coordinate complex structures in humans.
A controlled diet study with human volunteers found that a 2:1 w6/w3 ratio mimics early human diets can reduce inflammatory signaling genes. This study provides the first evidence of large changes in gene expression as a mechanism for omega fatty acids' clinical effects
A new paper reveals that there are more genetic differences between humans and mice than previously thought. One-fifth of mouse genes are new copies that have emerged in the last 90 million years of mouse evolution.
Researchers have identified a genetic link between periodontitis and coronary heart disease (CHD), with a shared genetic variant located on chromosome 9. The study found that the genetic variation associated with both diseases is identical, indicating a strong genetic basis for the connection.
Research finds that humans with diverse major histocompatibility complexes (MHCs) are more likely to choose mates with dissimilar MHCs, increasing genetic variability and immune system efficiency. This evolutionary strategy may help ensure healthy offspring and avoid endogamy.
Researchers have developed a mouse model of Wolfram Syndrome, linking CISD2 gene function to mitochondrial integrity and aging. CISD2-deficient mice display premature aging, decreased body weight, and degeneration of optic and muscular tissues.
Researchers have identified a key interaction between smallpox virus and human protein human nuclear factor kappa-B1, which inhibits inflammation pathways. This finding may reveal new strategies for developing treatments for smallpox and understanding the human immune system.
The Monell Center has received a $100,000 Grand Challenges Explorations grant to investigate the role of mosquito taste in malaria transmission. The project aims to identify new strategies to deter mosquitoes from biting humans by understanding how human skin tastes to them.
A recent study published in Critical Care Medicine found that older men are at a higher risk of death from community-acquired pneumonia compared to women. The researchers discovered that men's bodies respond differently to infection, leading to a stronger inflammatory and coagulation response, which may break up blood clots more quickly.
Scientists have developed a new tool to identify big events in human history by examining tiny genetic differences. This research, published in the journal Genetics, confirms a major decline in European populations 32,500-47,500 years ago and helps pinpoint gene mutations linked to diseases such as cancer and heart disease.
A new mouse model has been developed to understand the cause of progressive hearing loss, opening up avenues for treatment. The study found that a genetic mutation in microRNA seed region influences sensory hair cell production, leading to impaired hearing.
Researchers at Autoimmunity Research Foundation discovered that hidden bacteria alter human genes and gene products, leading to autoantibody production. Antibacterial therapies targeting these microbes can reverse autoimmune disease processes.
Scientists at the University of Central Florida have revived a dormant gene found in humans, which produces retrocyclin, a protein that resists HIV. The study found that restoring the production of retrocyclins prevents HIV entry and transmission.
A group of Michigan State University scientists warn that US farm animal research is facing a critical funding crisis, with only $32 million allocated from a $88 billion budget in 2007. This lack of funding threatens not only the research itself but also human health studies that rely on large-animal models.
Jeremy Nathans receives the Scolnick Prize for his groundbreaking work on color vision, brain development, and retinal disease. His research has led to significant insights into human blindness and the basis for many forms of color blindness.
A mouse study found that genetics play a role in susceptibility and resistance to prenatal alcohol exposure, with some strains showing teratogenic effects while others resisted, suggesting genetic influence. The study also highlights the importance of considering genetic factors in human FASD research.
Researchers at the University of Liverpool have developed a new method to identify genes that help protect the body from age-related changes. The study analyzed over five million gene measurements across multiple tissue types in animals and humans, highlighting key biological mechanisms that allow the body to adapt to aging.
Researchers at the University of Iowa have discovered a new mechanism for DNA biosynthesis in certain organisms, which may be targeted by new antibiotics. The discovery has the potential to combat multiple drug-resistant diseases such as tuberculosis.
Research published in Genetics reveals genetic priming in females, making them more likely to choose certain males over others, influencing mating outcomes and future reproductive behaviors. The study's findings suggest that genetic compatibility is key to understanding love at first sight.
A recent study by Penn State researchers suggests that several statistical methods used to detect natural selection at the molecular level are faulty. This has implications for the interpretation of hundreds of published studies on human evolution and the role of natural selection in shaping human traits.
A team of scientists has developed a new method to create stem cells with embryonic-like properties without using viruses, which can trigger cancer. This approach imports necessary genes on a small DNA circle and naturally disappears from the cell population over time.
Researchers have identified 10 genes linked to changes in QT interval duration, a key factor in sudden cardiac death. The discovery could help identify individuals at risk and aid pharmaceutical companies in developing safer drugs.
Dr. Mo Kwan Kang has been recognized for his groundbreaking research on the senescence process in human oral keratinocytes, aiming to understand health and disease of human oral mucosa. He has authored over 30 research articles and won several major research awards.
A new study identifies a human genetic link to high levels of 'good' cholesterol, highlighting the role of endothelial lipase enzyme mutations in HDL-C levels. Researchers discovered rare mutated forms of the LIPG gene that significantly increase plasma HDL-C levels.
A recent study found that oral quinacrine does not increase survival in patients with prion disease, but may slow progression and improve symptoms. However, the treatment was associated with increased incidence of adverse events, which were mostly mild and manageable.
A genetic variant on chromosome 8 is found to occur significantly more frequently in people with cleft lip and palate than in the control group. The study suggests that genes may play a far more important role in the formation of clefts than previously thought.
Heidelberg cardiologists have discovered a single amino acid mutation that can severely limit heart function in zebrafish, a model similar to the human genome. The researchers hope to develop new therapies for patients with cardiac insufficiency by targeting this mutation.
A genetic link has been identified between cats and humans for two forms of retinitis pigmentosa, a disease causing blindness. Researchers found that cats with specific mutations can be used to test the efficiency of gene therapy for both humans and animals.
Researchers have identified a way for the brain to compensate for problems with neurotransmitters like serotonin and dopamine, opening up new treatment options for addiction, depression, Parkinson's disease, and schizophrenia. The discovery was made using fruit flies with a genetic mutation that disrupted monoamine neurotransmitter rel...
Researchers identified AEG1 as a gene and protein crucial for HCC progression, suggesting targeting it may be a new therapeutic strategy. Overexpression of AEG1 accelerated tumor growth in mouse models.
African populations are still evolving due to natural selection, with lactose tolerance and genetic variation influenced by diseases like malaria. Penn genetics researcher Sarah Tishkoff presents her findings on human evolutionary history in Africa.
A new study published in Nature reveals significant genetic differences between individual yeast organisms, with variations of up to 4% compared to 1% between humans and chimpanzees. The findings suggest that human activities, such as wine and beer production, have influenced the evolution of yeast strains.
Researchers found a surge in duplicated sequences containing rapidly evolving genes in the genomes of humans and great apes, with most differences occurring prior to the speciation of chimpanzees. The study suggests that genetic differences contribute significantly to the distinctiveness between humans and chimps, and that these region...
Researchers at UTSA have made a breakthrough discovery in the fight against tularemia, a deadly bio-warfare agent. They identified a unique metabolic pathway and enzyme, nicotinamide adenine dinucleotide synthetase (NMS), that is specific to Francisella tularensis, making it a potential target for therapeutic development.
A study by Kiel University confirms a special sequence variation of the FOXO3A gene is more frequent in centenarians globally, supporting its role in longevity. The research team analyzed DNA samples from 388 German centenarians and 731 younger individuals, finding consistent results worldwide.
A new study found that animal oocytes cannot fully reprogram adult human cells, making them unsuitable substitutes for producing patient-specific stem cells. The researchers tested using oocytes from cows, rabbits, and humans, but failed to achieve the necessary gene expression changes.
A team of researchers at the University of California, Davis, has recorded and visualized the human DNA repair process using fluorescent microscopy. The study reveals key differences between human and bacterial DNA repair mechanisms, including the regulation of Rad51 protein's growth.
A study published in the Journal of the National Cancer Institute found that HPV18 DNA levels are not associated with the likelihood of progressing to advanced precancerous lesions of the cervix. The study suggests that testing for high levels of HPV18 DNA is not clinically useful.
Researchers at Cold Spring Harbor Laboratory discovered a new class of small RNAs that regulate gene expression by acting as 'off' switches at specific sites. The study also reveals a strikingly novel biochemical pathway for RNA processing, which may have significant implications for understanding human disease.
Researchers have identified a diagnostic biomarker SPOP that can accurately detect clear cell renal cell carcinoma, the most common type of kidney cancer. The study found that 99% of clear cell RCC samples showed elevated SPOP levels, making it a highly sensitive and specific diagnostic tool.
Researchers have discovered DNA hotspots associated with psoriasis, an autoimmune disease characterized by skin patches and joint pain. The study identified four novel genes linked to the condition, providing potential targets for new treatments.
A Purdue University researcher used a process focusing on one gene to trace the evolutionary history of domesticated rice, discovering genetic variation over millions of years. By comparing domesticated plants to wild rice species, scientists can identify valuable genes for desirable traits like branching and increased plant size.
A recent study has genetically linked Lou Gehrig's disease in humans to a similar disease in dogs called degenerative myelopathy. The researchers discovered that dogs with this disease have the same genetic mutation as humans with ALS, paving the way for using them as animal models to help identify therapeutic interventions.
Researchers modelled gene evolution alongside language development, concluding that genetic adaptation to language is unlikely due to rapid cultural change. The study suggests that human language has evolved primarily through cultural conventions rather than biological adaptation.