Articles tagged with Mitochondrial Genomes
Researchers analyzed ancient and modern mitochondrial genomes in the South Caucasus, finding genetic continuity for at least 8,000 years. The study suggests that documented cultural shifts in the region had little genetic impact on the local female population.
Researchers found somatic mitochondrial DNA inserts in colon and rectal cancer genomes, correlated with gene-rich segments and poorer patient survival. A novel Fiber-FISH technique rapidly maps mitochondrial DNA insertions in nuclear genomes.
Researchers found that mitochondrial-nuclear interactions affect energy production in animal cells, leading to variations in traits and potentially influencing human health. The study suggests that metabolic fitness relies on these interactions, which have significant implications for physiology and medical interventions.
Researchers found that cytoplasmic DNA can accumulate beneficial substitutions faster than free-living sexual genomes. Cytoplasmic genomes, including mitochondria and plastids, undergo adaptation due to uniparental inheritance and egg cell selection against faulty mitochondria.
Researchers develop universal assay to detect cisplatin cross-linking sites in the genome. They found that mitochondrial DNA is a major target of cisplatin's action, while nuclear DNA is less affected.
Researchers at Vanderbilt University discovered that mutant mtDNA behaves 'selfishly', benefiting itself while harming its host, causing diseases. The study found molecular mechanisms that allow mutant mtDNA to evade cellular regulation, paving the way for drug development.
Scientists have uncovered how the combination of nuclear and mitochondrial genomes triggers a cellular adaptation that determines aging. The study provides valuable information on using mitochondrial donation technology to prevent disease-causing mutations.
The study retrieved the complete sequence of a fossil's mitogenome, confirming its Eurasian origin and supporting a Palaeolithic back-migration to Africa. This migration suggests that some populations embarked on a journey from Eurasia to Africa around 40,000 years ago.
A new study reveals that mitochondrial dysfunction can lead to an imbalance in B-vitamin metabolism, resulting in genetic damage. This finding opens up new avenues for treatment, particularly targeting specific forms of B-vitamins.
A new study of chickens overturns the popular assumption that evolution is only visible over long time scales. The researchers found two mutations in the mitochondrial genomes of the birds in just 50 years, revealing a rate of evolution that is 15 times faster than previously believed.
Glaucoma, affecting over 60 million worldwide, has been linked to mitochondrial gene mutations through DNA sequencing. The research aims to support personalized medicines targeting mutated mitochondria and prevent disease progression.
Scientists have developed a new method to isolate plant nuclear DNA from organellar DNA using the human methyl-binding domain. This approach enables rapid and simple separation of genome sequences, reducing wasted data and increasing efficiency in genomic studies.
Swiss researchers have discovered a new parasite species that represents the missing link between fungi and extreme parasites. The study reveals that microsporidia adopted intracellular parasitism first, followed by genome modifications such as the loss of mitochondria and metabolic simplification.
Researchers found that lifespan in fruit flies depended more on interactions among dietary, genetic and mitochondrial factors than on individual factors. This study suggests that looking at complex combinations can lead to a deeper understanding of the aging process.
Researchers at the University of Montreal found a link between genetic variation in mitochondrial RNA and human fitness, with implications for metabolism rates and overall health. The study, which analyzed data from nearly 40,000 Quebecers, provides new insights into the complex relationship between genetics and health.
Researchers have discovered that the mitochondria of Amborella trichopoda, a sprawling shrub in the remote South Pacific, have acquired six genome equivalents of foreign DNA. The plant's energy-producing organelles absorbed genes from moss, green algae and flowering plants, creating an enormous mitochondrial genome.
Researchers discovered the largest example of horizontal gene transfer in any organism, where <i> Amborella </i> acquired foreign genes from green algae and other plants. The study provides insight into the evolution of mitochondrial fusion and its role in horizontal gene transfer.
Researchers from Universitat Autonoma de Barcelona found that over half of the European population exhibits heteroplasmy, a condition where multiple types of mitochondrial DNA coexist. The study sheds light on mutation patterns and selection forces acting on mitochondrial DNA in mammals.
Researchers have established that two individuals, Mitochondrial Eve and Y-chromosomal Adam, shared a similar timeline for their existence, with estimates suggesting they overlapped between 120,000 to 156,000 years ago.
The tulip tree's mitochondrial genome has remained largely unchanged since the dinosaurs, providing a 'molecular fossil' with preserved ancestral gene clusters. The slow mutation rate allows researchers to estimate the ancestral angiosperm mitochondrial genome contained 41 protein genes.
Scientists at Brown University and Indiana University have traced mitochondrial-nuclear incompatibility in fruit flies to individual nucleotide mutations, revealing how the genetic double whammy makes flies sick. The study highlights the importance of considering both genomes in understanding metabolic diseases.
A research team developed a one-step gene test that analyzes both nuclear and mitochondrial DNA to help evaluate the genetic cause of suspected mitochondrial disease. The new tool may shorten the diagnostic odyssey experienced by patients and families seeking the cause of debilitating symptoms.
Researchers sequenced complete mitochondrial genomes from ancient Polynesian samples, revealing three individuals with no recent maternal ancestor in common. This suggests a diverse founding population and challenges previous theories about the pathways of great migration across the Pacific to New Zealand.
Researchers discovered genetic changes in the mitochondrial genome of iPS cells, which can cause metabolic disorders and nervous diseases. The study highlights the need to test cell lines intended for clinical use for such mutations.
Researchers found that woolly mammoths interbred with the Columbian mammoth, a species 25% larger, due to climate change and geographic overlap. The study provides new insights into the evolutionary history of these ancient creatures.
Researchers reanalyze mitochondrial genome data to reveal new insights into the initial peopling of North America, confirming 15 founding maternal lineages from Beringia. The study's findings suggest that genetic diversity was significantly underestimated in previous estimates.
Researchers analyzed genetic evidence from 139 killer whales and found clear differences among species in the Antarctic and North Pacific. The study suggests that two types of killer whales are separate species, with additional analysis needed to confirm other possible species.
Researchers have sequenced the genome of the human body louse, revealing a fragmented mitochondrial genome consisting of 18 minichromosomes. This discovery challenges our understanding of animal DNA structure and raises questions about its evolution and potential benefits.
Researchers at American Museum of Natural History found a close evolutionary relationship between malarial parasites in rats and humans, including Plasmodium falciparum. The study suggests that the most deadly form of malaria may have originated from rodents.
Research at Vanderbilt University Medical Center found that genetic variation in the mitochondrial genome is associated with an increased risk of age-related macular degeneration, a leading cause of blindness in Caucasians over 50. This discovery may lead to personalized medicine and preventive treatments.
Researchers from Penn State University and Copenhagen discovered that hair shafts can preserve ancient DNA, allowing for the sequencing of entire mitochondrial genomes from 10 individual woolly mammoths. This breakthrough enables efficient analysis of genetic material from extinct species.
Scientists have found a direct link between mitochondrial DNA variants and metabolic markers for type 2 diabetes in rats. The study, published in Genome Research, highlights the role of mitochondrial genome variation in common diseases.
The complete mitochondrial genome of the mastodon has been sequenced, increasing the age limit for paleogenomic analyses by almost a complete glacial cycle. The study reveals that mammoths are more closely related to Asian than African elephants, with divergence times similar to those of humans, chimpanzees, and gorillas.
A new model proposes that sexual differentiation may exact a high biological cost, reducing function of mitochondria and influencing longevity. The model predicts which genes regulate life span and suggests testable hypotheses for exploring the biggest question in aging research.
A study by Rachel Mueller and David Wake rewrites the evolutionary history of salamanders, finding inconsistencies with accepted classifications. The research suggests that some terrestrial salamanders regained their larval stage after moving back to water, contradicting previous assumptions.
An international team of scientists has identified the LRPPRC gene as the cause of Leigh Syndrome, a devastating childhood disease that affects 1 in 2000 live births. The discovery enables carrier testing and prenatal diagnostic options, providing immediate clinical implications for families affected by the disorder.
Researchers aim to isolate and sequence chloroplast and mitochondrial genomes from 50-100 plants to determine relationships among ancient plant groups. By comparing these genomes, they hope to answer questions about how many times land was colonized by green algae and how multicellular plants evolved.