Articles tagged with Human Genetics
Researchers at Uppsala University have made a breakthrough in understanding the genetic transformation of wild species into domestic chickens. The study reveals two significant selective sweeps, one affecting the TSHR gene and another involving the TBC1D1 gene, which are linked to changes in reproduction timing and glucose uptake in mu...
Researchers from UC San Diego and Harvard found that cooperative behavior is contagious and spreads through a social network. When people benefit from kindness, they are more likely to help others, creating a cascade of cooperation.
Researchers analyzed DNA from 40 diverse Echinacea populations to understand the plant's genetic diversity. The study found that the species likely originated in southern refuges on both sides of the Mississippi River and hybridized as they moved northward, leading to blurred genetic distinctions.
Researchers at EMBL discover a reference gene set for the human gut microbiome, cataloging 3.3 million microbial genes and shedding light on their role in maintaining health. This breakthrough enables non-invasive stool samples to be used as a measure of health, potentially leading to new treatments.
A new study found that fruit flies without the key gene controlling circadian rhythms were more resilient to stress at a young age, but their health declined faster as they aged. The research suggests that biological clocks may play a role in aging and health, with intact genes potentially improving health and longevity.
Researchers at UCLA successfully removed CCR5 receptor, which HIV binds to, from human immune cells using a gene-based approach. This strategy shows promise for treating HIV-infected individuals by reducing the virus's ability to infect cells.
Researchers from the University of Innsbruck have identified a primitive cancer gene in a fresh water polyp, revealing similar biochemical functions to those found in humans. This discovery sheds light on the evolution of cancer and its relationship to stem cells.
A study of nearly 800 patients with non-small cell lung cancer identified genetic characteristics associated with increased recurrence-free survival, differing between men and women based on age.
University of Florida researchers are developing a gene therapy to treat Pompe disease, which causes severe muscle weakness and breathing difficulties. The treatment involves delivering a corrective gene directly to the diaphragm using an adeno-associated virus, with clinical trials expected to begin soon.
A study published in PNAS suggests that humans' unique genetic adaptation to meat-rich diets has increased lifespan but also made us more susceptible to diseases of aging such as cancer, heart disease, and dementia. ApoE4 carriers have higher rates of early onset coronary heart disease and Alzheimer's disease.
Researchers found scant evidence of antibiotic resistance genes in isolated polar bears, contradicting previous findings in other animals. The study suggests that the spread of antibiotic resistance may be caused by human contact, rather than natural occurrence.
The human and chimpanzee Y chromosomes differ significantly in structure and gene content, with the chimp Y having lost up to half of its human counterpart's genes. This rapid evolution is thought to be driven by intense sperm competition between males, leading to the favoring of advantageous sperm production genes over detrimental ones.
Scientists discovered that Gata5 gene cooperates with Gata4 to direct the heart's normal structure formation during early development. This finding contributes to understanding how heart defects may occur in humans.
Research suggests that certain adaptations that once benefited humans may now be helping such ailments persist in spite of advancements in modern culture and medicine. Evolutionary perspectives integrated into medical curricula could help future physicians understand health problems from an evolutionary perspective.
A team of researchers has successfully studied the elusive CstF-64 protein, a crucial component of gene expression. The breakthrough allows scientists to understand its interactions with other proteins and improve polyadenylation machinery in living cells.
Researchers at Helmholtz Munich identified genetic variants associated with disturbances in lipid metabolism, which may contribute to the development of diabetes. The study provides a new approach for early diagnosis and therapy of metabolic diseases.
A genetic study has identified the origins of cavity-causing bacteria Bifidobacterium dentium Bd1, revealing its genetic adaptations for oral survival. The study found that the genome sequence of this bacterium has evolved through only a few horizontal gene acquisition events, highlighting the narrow boundary between beneficial and pat...
Scientists are studying the physical processes of ice formation in insects to understand why some survive freezing while others don't. The research found that insects that freeze at consistently higher temperatures have adaptations that allow them to control ice formation, implying cellular or biochemical level adaptations.
A new study from North Carolina State University suggests that health care spending can contribute to economic growth by investing in future capital and improving productivity. The researchers found that government projections of health care costs were unduly pessimistic, leading to errors of up to 35%.
Penn researchers have isolated and transplanted pure populations of human spermatogonia and mouse gonocytes, showing remarkable similarity between the two species' reproductive cells. The study reveals insights into male germline stem cell lifecycle and provides hope for prepubescent men at risk of infertility due to cancer treatment.
Researchers propose that gene variants contribute to heterogeneity in populations, giving generations more opportunity to survive in a fluctuating environment. This idea may help explain the presence of common diseases and how organisms adapt quickly enough to environmental change.
Research shows human umbilical stem cells can improve corneal transparency and thickness in laboratory mice. The treatment has the potential to replace corneal transplants as an alternative therapy for severe genetic and corneal eye diseases.
A study by Duke University researchers discovered a commonality in the genetic codes of human sex receptors and those found in other primates. This similarity suggests that varying sensitivity to specific odors may play a role in mate selection, potentially preventing cross-species couplings.
Researchers found that broad differences in gene activity between humans and chimps are coordinated by about 90 transcription factors, which affect nearly 1,000 genes. This suggests a unique regulatory mechanism in the human brain that allows for larger brains and different organ functions.
A multi-institutional team is using genomic tools and the Mexican axolotl salamander to understand regenerative capacity after spinal cord injury, stroke, and other neural conditions. The goal is to tap unused human capacities to treat these conditions.
Researchers found that mice lack two key features of a critical DMD gene, hindering the use of mice as primary models for studying DMD. The findings indicate that mouse models are particularly poor at replicating brain effects of DMD, which could limit understanding of the disease's mechanisms.
Humans uniquely susceptible to aging diseases due to genetic adaptations to inflammation and high cholesterol diets. The 'meat-adaptive gene' ApoE3 may contribute to human lifespan, while ApoE4 impairs neuronal development and shortens lifespan by four years.
Recent studies in fruit flies have identified a nuclear receptor that plays a critical role in regulating cholesterol levels, similar to humans. The findings suggest that fruit flies can teach humans about their own regulatory mechanisms for maintaining proper balances of cholesterol and stored fat.
A new study found that female mandrills reproduce with males whose genes complement theirs, increasing the chances of their offspring resisting disease. The researchers believe this may be due to smell or selective fertilization, and the discovery supports the idea humans may also choose genetically compatible mates.
Researchers identify phosducin's role in modulating blood pressure in response to stress, finding increased baseline and stress-dependent blood pressure in mice and humans. The study suggests phosducin as a promising target for developing drugs to alleviate stress-induced hypertension.
Researchers have confirmed Homo floresiensis as a distinct species using statistical analysis on skeletal remains, rejecting the theory that it was a diseased sub-population of healthy humans. The study reveals unique anatomy that differs from modern humans and other primate species.
Researchers have discovered genetic clues that enable scientists to tailor corn plants for specific traits, such as high protein content for human consumption or high glucose content for biomass fuel. The findings could lead to higher yield or improved quality crops with reduced environmental impact.
Bird flu viruses require two simultaneous genetic mutations to infect humans, making human-to-human transmission unlikely. The study suggests that H5N1's high mortality rate in humans is due to its inability to infect the right cells, increasing the odds of it being less likely to cause a pandemic.
Two large-scale genetic studies identified key regions linked to susceptibility in both adult and childhood inflammatory bowel disease, highlighting the role of epithelial defects in creating an 'open door' for bacteria. The findings also suggest potential new targets for treatment by tightening up the mucosal barrier.
The institution has been awarded over $42 million for research projects focusing on cancer, heart disease, kidney disease, autism, neurodegenerative diseases, and diabetes. The grants support the work of researchers like Dr. Joseph Hill, Dr. Craig Powell, and Dr. Elizabeth Maher.
Researchers at Queen's University have found a significant connection between two genes involved in human cancer formation by studying their behavior in worms. Increasing Eph receptor levels in worms led to decreased PTEN levels and premature death, highlighting the potential for targeted cancer therapy.
Experts from 11 countries agree on a joint DNA-based database to combat child trafficking, with the goal of eradicating the crime. The DNA-Prokids Programme aims to reunite victims with their families and prevent further exploitation.
The domestic horse genome sequence has been completed, providing access to specific gene sequences for identifying traits. The findings have significant implications for improved breeding practices and studying human health, particularly in relation to shared genetic conditions.
The Genome 10K Project aims to sequence the DNA of approximately one species per genus of living mammals, birds, reptiles, amphibians, and fish. This will help reconstruct the genetic changes that gave rise to diverse life forms on Earth, with potential benefits for human and animal health, as well as conservation efforts.
Researchers discovered a major metabolic switch in fruit flies that plays a key role in alcohol tolerance and found direct translation to humans. This discovery provides a crucial explanation of why some people tolerate alcohol better than others and offers a potential target for preventing or eliminating alcoholism.
Researchers found a mechanism that enables proteins to become more specialized over time, contributing to human biological complexity. Random genetic mutations in duplicate genes can lead to dosage imbalances, which can be alleviated through paralogization, allowing humans to maintain complex tissues.
Researchers developed a genetic family tree for cows and ruminants, spanning 29 million years, using a new technique that also applies to humans. The study provides insights into cattle domestication, breed formation, and evolutionary connections to humans.
Berkeley researchers have imaged the human RISC-loading complex for the first time, proposing a model of how small RNA molecules target specific messenger RNAs for silencing and/or destruction. This work provides new insights into RNA interference mechanisms and has significant implications for gene regulation in humans.
Researchers at Iowa State University have identified an enzyme that helps make tuberculosis resistant to a human's natural defense system. A new method to neutralize this enzyme may lead to a cure for the disease, which kills 1.5 to 2 million people worldwide annually.
Scientists have developed a new antigen that induces protective antibodies capable of blocking infection by genetically-diverse HIV strains. The chemically-activated antigen differs from previous vaccines and stimulates the production of broadly-neutralizing antibodies.
Researchers aim to understand mechanisms by which the thymus shuts down, affecting immune system function during aging. The goal is to find ways to turn the organ's function back on to fight disease or aging, potentially leading to longer and healthier lives.
The Baumann Lab has identified a key protein role in distinguishing chromosome ends from DNA breaks, preventing genomic instability and cancer. RAP1 plays a critical role in cancer prevention and may be linked to age-related diseases.
The American Society of Human Genetics presents the 2009 William Allan Award to Dr. Huntington F. Willard for his seminal findings in understanding chromosome structure and behavior. Willard's work has been instrumental in advancing human genetics, with a focus on X chromosome inactivation and centromeres.
A Mayo Clinic study has found two genes associated with good central nervous system repair in mice with multiple sclerosis. The identification of these genes may lead to the development of new therapies and a better prediction of patient outcomes.
Plant scientists at the University of Montreal have discovered a key mechanism that enables plants to prevent dangerous gene alterations, ensuring their survival. This finding has implications for understanding gene repair mechanisms in humans and preventing devastating diseases.
Researchers engineered a human HIV-1 inhibitor modeled after AoT5Cyp, a potent owl monkey fusion protein. The human fusion protein, hT5Cyp, blocked HIV-1 infection in human macrophage and T cell lines without disrupting normal cell function.
Scientists have identified a complete signaling pathway for plant brassinosteroid hormones, a discovery that could lead to genetic engineering of crops with higher yields and improve understanding of human diseases like cancer and diabetes. The study shares similarities with animal steroids, but functions differently at the cellular le...
Gladstone scientists have found the first genetic link between reptile and human heart evolution, linking protein Tbx5 to the development of four-chambered hearts in turtles and humans. The study sheds light on the evolution of warm-bloodedness and provides insights into congenital heart disease.
Researchers at Cold Spring Harbor Laboratory have developed a sensitive and accurate way of identifying gene copy number variations (CNVs) using new DNA sequencing technologies. This method allows for the detection of small structural variants that were previously overlooked by current methods.
Researchers found that nucleosomes package protein coding parts of genes in humans and the roundworm C elegans. This mechanism enables genes to be used in different ways, contributing to human development.
Researchers identified a mutated gene hDEC2 that allows individuals to thrive on six hours of sleep, and studied its impact on mice and fruit flies. The findings suggest that the gene modulates both sleep quantity and wakefulness-behavioral drive.
Researchers believe a parasite found in chimpanzees in equatorial Africa is the original source of malignant malaria, transmitted to humans through a single mosquito around 5,000 years ago. This discovery could aid the development of a vaccine for malaria, which affects 500 million people annually.
Researchers found a distinct 'DNA signature' in human sperm, which recognizes an egg's species-specific DNA, enabling fertilization. This discovery explains male infertility and pregnancy failures.
A team at WPI and CellThera has discovered a novel method to turn on stem cell genes in human fibroblasts by manipulating culture conditions. This breakthrough could lead to treatments for human diseases and traumatic injuries by coaxing patient cells to repair and regenerate damaged tissues.
Researchers at OMT successfully created heritable, specific and permanent genetic modifications in rats using Zinc Finger Nuclease (ZFN) technology. This achievement paves the way for unrestricted development of a novel human monoclonal antibody platform.