Articles tagged with Dna Rearrangements
The study provides a comprehensive reference for six ape species, including siamang, Sumatran orangutan, gorilla, bonobo, and chimpanzee. The ape genomes offer new insights into human and ape evolution, genetic differences among species, and potential therapeutic applications.
Researchers at Baylor College of Medicine have identified a rare genetic diagnosis in a child with Lennox-Gastaut syndrome, a severe form of epilepsy and developmental delay. The study reports a highly complex rearrangement of chromosomes 3 and 5, leading to a rare condition known as 5q14.3 microdeletion syndrome.
Researchers used CRISPR/Cas to generate controlled chromosomal inversions in Arabidopsis thaliana, finding no significant changes in epigenetic marks or gene expression. Only minor genome-wide effects were observed, indicating the robustness of the epigenome and transcriptome.
Researchers have reconstructed the evolutionary origin of the complex configuration of multiple sex chromosomes in echidnas using their nearly gapless genome sequence. The high-quality data helped trace genetic events that led to this remarkable chromosomal arrangement, including chromosome fusion and fission events.
The CRISPR tool was successfully used to correct a genetic defect in cells affected by chronic granulomatous disease. However, the repair process also introduced new genetic defects, highlighting the need for caution when using CRISPR technology in clinical settings.
A multi-university research team led by University of Virginia engineering professor Gustavo K. Rohde has developed a system that can accurately spot genetic markers of autism in brain images. The system uses generative computer modeling technique called transport-based morphometry, which reveals brain structure patterns that predict v...
Researchers at KAUST have developed NanoRanger, an accurate and rapid method for genetically diagnosing Mendelian genetic disorders. This breakthrough enables diagnosis in just 12 minutes, providing a detailed picture of the genomic disorder.
Researchers at PNRI reveal how specific DNA rearrangements called inverted triplications contribute to the development of various genetic diseases. These complex rearrangements are caused by segments of DNA switching templates during the repair process, leading to disruptions in normal gene function and contributing to genetic disorders.
Researchers analyzed genome of Oikopleura dioica, finding it has wildly different languages despite identical physical characteristics. The 'scrambling' phenomenon suggests genes are regulated differently, challenging assumptions about species identity.
Researchers analyzed over 200 butterfly and moth genomes to understand their evolutionary history. They found that chromosomes have remained largely unchanged since the last common ancestor over 250 million years ago, despite the diversity seen today in wing patterns and caterpillar forms.
A recent study published in Cell Genomics has uncovered the quantitative and qualitative mutational impacts of ionizing radiation on normal cells. The research team found that exposure to low levels of radiation resulted in an average of 14 mutations per cell, primarily causing short base deletions and complex genomic rearrangements.
A new study has identified a genetic marker that can predict which patients are likely to respond to immunotherapy in various types of cancer. Tumors with high intragenic rearrangement (IGR) burden, which indicates cryptic structural rearrangements of the genetic code, may respond better to immunotherapy.
The study has shed light on how cats evolved into different species and how genetic changes relate to survival abilities like smell detection. It also revealed that cat genomes tend to have fewer complex genetic variations than other mammal groups, such as primates.
Researchers have identified a neoplastic fusion transcript RAD51AP1-DYRK4 in luminal B breast cancer, associated with higher ki67 expression and aggressive clinical characteristics. MEK inhibitor trametinib may be effective in blocking the MEK-ERK signaling driven by this fusion.
A novel association of t(5;17) with t(8;21) has been reported in an acute myeloid leukemia (AML) patient, resulting in a RUNX1-RUNX1T1 rearrangement. The patient received chemotherapy and stem cell transplantation, highlighting the importance of this rare translocation.
Researchers at Osaka University identified two key genes, Srr1 and Skb1, involved in gross chromosomal rearrangement. These genes play a crucial role in preventing the formation of isochromosomes, a type of structural mutation in chromosomes.
Researchers used long-read sequencing to identify novel mutational patterns and complex genomic rearrangements in cancer genomes, including those associated with liposarcoma. This approach offers a more comprehensive understanding of DNA mutations and their impact on cell function.
The new PASTE tool combines precise targeting of CRISPR-Cas9 with integrases to insert large chunks of DNA into the genome without inducing double-stranded breaks. This approach holds promise for treating diseases with multiple mutations, such as cystic fibrosis, with high efficiency and minimal unwanted effects.
A genetic test known as chromosomal microarray analysis (CMA) may be able to identify the cause of Sudden Infant Death Syndrome (SIDS) or its counterpart in older children, known as Sudden Unexplained Death in Childhood (SUDC). CMA identified deletions or duplications of DNA segments in 14% of deceased infants and toddlers up to 28 mon...
Experimental study finds large DNA insertions caused by retrotransposition can increase cancer risk in human cells edited with CRISPR/Cas9. In contrast, base editing and prime editing show much lower rates of retrotransposition.
A new study has identified genomic modifications in the transgenic papaya 'SunUp', which was developed to resist the papaya ringspot virus. The researchers used advanced sequencing technologies to read long stretches of DNA and found that the insertion did not cause any change in gene expression.
A study by UAB and University of Kent researchers found that the 3D structure of male germ cells plays a key role in determining genome evolution. Genome rearrangements were associated with DNA damage locations in spermatids, suggesting that males have a unique impact on genome evolution.
A recent study found that many marine invertebrates, including sponges and jellyfish, retain the same chromosomal structure as their primitive ancestors over 600 million years ago. This discovery underscores the conservatism of evolution and provides a key link between humans and our distant ancestors.
Researchers at Osaka University have identified a protein called Rad8 as a key player in chromosomal rearrangements, which can lead to cell death and diseases like cancer. The study suggests that inhibiting the attachment of ubiquitin to PCNA at a specific amino acid position may be a promising new strategy for cancer therapies.
A new study on wild house mice from Southern Italy suggests that Robertsonian fusions play an active role in speciation. The researchers found three identical chromosomal rearrangements in both island and mainland populations, showing large-scale genetic mutations occur independently.
A new study suggests a single cell division error can trigger a cascade of mutational events, generating defining features of cancer genomes. Researchers recreated the BFB cycle in cultured cells and observed an increase in chromothripsis after aberrant chromosome bridge formation.
Researchers at Brigham and Women's Hospital identify a genetic abnormality in the SYCP2 gene as a possible cause of male infertility. The study found that variants affecting this gene were associated with low sperm count and loss-of-function variants, making it a potential diagnostic marker.
Researchers at Osaka University found that heterochromatin helps prevent large chromosomal rearrangements by repressing transcription of centromere repeats. The team's study reveals a key mechanism for maintaining chromosomal integrity and could lead to new methods for securing genome stability.
Researchers have developed a new method to detect genetic changes in cancer cells using Hi-C, which can identify major genome rearrangements and copy number variations with high accuracy. This approach has the potential to aid targeted treatments and enhance cancer diagnosis.
Recent study published in Comparative Cytogenetics reveals that green peach aphids (Myzus persicae) can have unusual karyotypes due to chromosomal fragmentations and rearrangements. This challenges the conventional view of species stability, as observed karyotype variations often result in reduced fertility or sterility.
The gibbon genome sequence provides a new understanding of the genetic mechanism behind rapid chromosomal rearrangements, shedding light on chromosome structure and function. The study's findings have significant implications for cancer research and the origin of human diseases.
Research reveals that chromosomal rearrangements, such as inversions or translocations, can be beneficial in certain environments, leading to improved growth abilities. This discovery sheds light on how natural selection shapes chromosome structure to favor specific conditions.
Scientists have identified the molecular mechanisms underlying the onset of common leiomyomata, a type of benign tumour that affects millions of women. The study suggests that complex chromosomal rearrangements may underlie the development of these tumours, and highlights potential avenues for novel pharmacological treatments.
A study led by Uppsala University reveals that structural modifications of DNA are duplicated or lost more commonly in older individuals. This may explain the impaired immune system with age. The researchers found large rearrangements in blood cells of people over 60, as well as smaller changes in younger individuals.
Researchers engineered a computer-designed yeast chromosome with an inducible evolution system, allowing them to rapidly introduce genetic changes. This allows for the custom design of organisms that can grow better in adverse environments or produce more ethanol.
Researchers found that yeast chromosome complement has decreased in all except one event, a whole genome duplication, where chromosomes fused or broke and recombined. This study sheds light on the evolution of chromosome complements in yeast and other organisms.
Scientists at the University of California, San Diego have identified a large number of genes that can prevent genetic rearrangements that may lead to cancer and other diseases. These genes and pathways are involved in repairing DNA replication mistakes and may help explain how the body maintains its stability.
Researchers found significant genomic rearrangements in human and non-human primate DNA, suggesting a new source of variation between species. These findings may provide insights into human health and disease, and could inform targeted investigations of gene expression differences.
Mouse cells lacking nonhomologous DNA end-joining (NHEJ) pathway show high levels of chromosome breakage and genetic material rearrangement, highlighting its critical role in maintaining genomic stability. The study also reveals that NHEJ is essential for repairing damaged chromosomes induced by ionizing radiation.
Scientists analyzed chromosome 22 structure and found unstable areas with repetitive sequences where genes are prone to rearrangements. These low-copy repeats may cause the loss of important genes in chromosome 22q11 deletion syndrome, a common genetic disorder affecting hundreds of patients.