498 results match your criteria: "Department of Biology University of Copenhagen Copenhagen Ø Denmark.[Affiliation]"

Three bacterial strains, designated FZUC8N2.13, FBOR7N2.3 and FZUR7N2.

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Bipolar disorder is a leading contributor to the global burden of disease. Despite high heritability (60-80%), the majority of the underlying genetic determinants remain unknown. We analysed data from participants of European, East Asian, African American and Latino ancestries (n = 158,036 cases with bipolar disorder, 2.

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Tetrahydrocannabinol (THC) is the principal psychoactive compound derived from the cannabis plant Cannabis sativa and approved for emetic conditions, appetite stimulation and sleep apnea relief. THC's psychoactive actions are mediated primarily by the cannabinoid receptor CB. Here, we determine the cryo-EM structure of HU210, a THC analog and widely used tool compound, bound to CB and its primary transducer, G.

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Bracken Fern Carcinogen, Ptaquiloside, Forms a Guanine -Adduct in DNA.

J Agric Food Chem

January 2025

Centre for Chemical Biology, Department of Chemistry, Institute for Nucleic Acids, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.

Bracken fern ( sp.) is a viable and vigorous plant with invasive potential, ingestion of which causes chronic illness and cancers in farm animals. Bracken is a suspected human carcinogen, and exposure can result from ingestion of bracken-contaminated water, dairy products, or meat derived from livestock grazing on bracken fern.

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Article Synopsis
  • - A new beetle species, Rhantus villumi sp. nov., has been identified from a single specimen found in the Fur Formation of Denmark, dating back about 55.4 million years to the early Eocene, making it the oldest known member of its genus.
  • - The discovery aligns with phylogenetic studies and suggests that the presence of this temperate beetle in a typically warm environment indicates potential short-term cooling trends during that period.
  • - The newly identified species might have fed on mosquito larvae, which have also been found in the same fossil site; however, another Dytiscidae species was noted but remains unidentified due to preservation issues.
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N6-methyladenosine (mA) exerts many of its regulatory effects on eukaryotic mRNAs by recruiting cytoplasmic YT521-B homology-domain family (YTHDF) proteins. Here, we show that in Arabidopsis thaliana, the interaction between mA and the major YTHDF protein ECT2 also involves the mRNA-binding ALBA protein family. ALBA and YTHDF proteins physically associate via a deeply conserved short linear motif in the intrinsically disordered region of YTHDF proteins and their mRNA target sets overlap, with ALBA4 binding sites being juxtaposed to mA sites.

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Adult Phenotype of -Associated Disorders.

Neurol Genet

December 2024

From the Institute of Medical Science (M.R.), University of Toronto; Adult Genetic Epilepsy (AGE) Program (M.R., Q.Z.A., F.Q., I.C., A.A., D.M.A.), Krembil Neurosciences Institute, Toronto Western Hospital, University Health Network, Canada; Epilepsy Unit (A.A.-S.), Vithas Clinical Neuroscience Institute, Vithas Madrid University Hospitals; Faculty of Experimental Sciences (A.A.-S.), Francisco de Vitoria University, Madrid, Spain; Department of Drug Design and Pharmacology (A.B.), University of Copenhagen; Department for Genetics and Personalized Medicine (A.B.), Danish Epilepsy Centre, Dianalund; Institute for Regional Health Services (A.B.), University of Southern Denmark, Odense; NYU Langone Epilepsy Center (O.D., F.Q., A.A.); Edmond J. Safra Program in Parkinson's Disease (A.F.), Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, UHN; Division of Neurology (A.F., D.M.A.), Department of Medicine, University of Toronto; Krembil Brain Institute (A.F., D.M.A.); Clinical Genetics Research Program (A.S.B.), Centre for Addiction and Mental Health; The Dalglish Family 22q Clinic (A.S.B.), Toronto General Hospital, University Health Network; Department of Psychiatry (A.S.B.), University of Toronto, Ontario; Toronto Congenital Cardiac Centre for Adults (A.S.B.), Division of Cardiology, Department of Medicine, and Department of Psychiatry, University Health Network and Toronto General Hospital Research Institute and Campbell Family Mental Health Research Institute (A.S.B.), Toronto, Ontario, Canada.

Background And Objectives: Pathogenic variants are associated with neurodevelopmental disorders and developmental and epileptic encephalopathy. While pediatric phenotypes have been readily explored, adult phenotypes are not well understood. We aimed to investigate the phenotypic spectrum of adult patients with variants.

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Frontotemporal dementia (FTD) is one of the leading causes of young-onset dementia before age 65, typically manifesting as abnormal behavior (in behavioral variant FTD) or language impairment (in primary progressive aphasia). Although FTD affects all populations across the globe, knowledge regarding the pathophysiology and genetics derives primarily from studies conducted in North America and Western Europe. Globally, biomedical research for FTD is hindered by variable access to diagnosis, discussed in this group's earlier article, and by reduced access to expertise, funding, and infrastructure.

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Sphingosine 1-phosphate (S1P) is a lysosphingolipid with antiatherogenic properties, but mechanisms underlying its effects remain unclear. We here investigated atherosclerosis development in cholesterol-rich diet-fed LDL receptor-deficient mice with high or low overexpression levels of S1P receptor 1 (S1P1) in macrophages. S1P1-overexpressing macrophages showed increased activity of transcription factors PU.

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The mA-YTH regulatory system in plants: A status.

Curr Opin Plant Biol

December 2024

University of Copenhagen, Copenhagen Plant Science Center, Department of Biology, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark; Consejo Superior de Investigaciones Científicas (CSIC), Instituto de Hortofruticultura Subtropical y Mediterránea 'La Mayora' (IHSM), 29750 Algarrobo-Costa, Málaga, Spain. Electronic address:

Plants use mRNA methylation to regulate gene expression. As in other eukaryotes, the only abundant methylated nucleotide in plant mRNA bodies is N6-methyladenosine (mA). The conserved core components of mA-based genetic control are a multi-subunit nuclear methyltransferase, and a set of nuclear and cytoplasmic RNA-binding proteins consisting of an mA recognition module, the YT521-B homology (YTH) domain, and long intrinsically disordered regions (IDRs).

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Recent advances in noncoding RNA modifications of gastrointestinal cancer.

Cancer Sci

January 2025

Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Osaka, Japan.

Elucidating the mechanisms underlying cancer development and proliferation is important for the development of therapeutic methods for the complete cure of cancer. In particular, the identification of diagnostic markers for early detection and new therapeutic strategies for refractory gastrointestinal cancers are needed. Various abnormal phenomena occur in cancer cells, such as functional changes of proteins, led by genomic mutations, and changes in gene expression due to dysregulation of epigenetic regulation.

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Diversity, functional classification and genotyping of SHV β-lactamases in .

Microb Genom

October 2024

Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK.

Interpreting the phenotypes of alleles in genomes is complex. Whilst all strains are expected to carry a chromosomal copy conferring resistance to ampicillin, they may also carry mutations in chromosomal alleles or additional plasmid-borne alleles that have extended-spectrum β-lactamase (ESBL) activity and/or β-lactamase inhibitor (BLI) resistance activity. In addition, the role of individual mutations/a changes is not completely documented or understood.

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Risk factors for lymph node metastasis in women with FIGO 2018 IA cervical cancer with a horizontal spread of > 7 mm.

Eur J Cancer

November 2024

Department of Obstetrics and Gynaecology, GROW school for oncology and developmental biology, Maastricht University Medical Centre+, Maastricht, the Netherlands; Department of Obstetrics and Gynaecology, Catharina Hospital, Eindhoven, the Netherlands.

Article Synopsis
  • In the FIGO 2018 classification, women with early-stage cervical cancer are now classified differently based on their tumor's size and spread, which could change how they are treated.
  • A study looked at a group of 992 women with specific types of cervical cancer to see how often the cancer spread to lymph nodes (pN+) and found that certain factors like lymphovascular space invasion (LVSI) increased the risk of spread.
  • The results suggest that women with LVSI-positive tumors should have lymph node checks, but those with LVSI-negative tumors may not need this if their tumor size and other factors are considered.
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Article Synopsis
  • * No significant associations were found between individual metabolites or patterns and overall prostate cancer risk after adjusting for multiple tests, except for six specific phosphatidylcholines linked to advanced cases diagnosed within 10 years.
  • * Two metabolite patterns (1 and 2) showed inverse associations with advanced prostate cancer, while pattern 3 was related to prostate cancer death, indicating that metabolite profiles may change several years before advanced disease is detected.
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The use of compounds produced by hosts or symbionts for defence against antagonists has been identified in many organisms, including in fungus-farming termites (Macrotermitinae). The obligate mutualistic fungus Termitomyces plays a pivotal role in plant biomass decomposition and as the primary food source for these termites. Despite the isolation of various specialized metabolites from different Termitomyces species, our grasp of their natural product repertoire remains incomplete.

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Role of human plasma metabolites in prediabetes and type 2 diabetes from the IMI-DIRECT study.

Diabetologia

December 2024

Research Unit of Molecular Epidemiology, Institute of Epidemiology, German Research Center for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany.

Article Synopsis
  • Researchers are studying type 2 diabetes, which happens when there is too much sugar in the blood, to see how certain substances in the body, called metabolites, are connected to it.
  • They looked at 3,000 blood samples and analyzed 911 metabolites to find out how these substances relate to blood sugar levels.
  • They discovered several metabolites that are different in people with normal blood sugar, those with prediabetes, and those with type 2 diabetes, mainly focusing on specific amino acids and fats.
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Background: Access to sample-level metadata is important when selecting public metagenomic sequencing datasets for reuse in new biological analyses. The Standards, Precautions, and Advances in Ancient Metagenomics community (SPAAM, https://spaam-community.org) has previously published AncientMetagenomeDir, a collection of curated and standardised sample metadata tables for metagenomic and microbial genome datasets generated from ancient samples.

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Now and then in eukaryotic DNA methylation.

Physiol Genomics

November 2024

Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark.

Article Synopsis
  • Since the mid-1970s, scientists have created new ways to study DNA methylation, helping us learn about its role in biology and medicine.
  • This research has led to important discoveries about diseases, how living things develop, and even extinct species.
  • Recent advances include understanding how DNA can change over time, studying the structure of DNA-related proteins, and creating tools to explore aging and health.
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In vivo dendritic cell reprogramming for cancer immunotherapy.

Science

October 2024

Molecular Medicine and Gene Therapy, Lund Stem Cell Centre, Lund University, 221 84 Lund, Sweden.

Immunotherapy can lead to long-term survival for some cancer patients, yet generalized success has been hampered by insufficient antigen presentation and exclusion of immunogenic cells from the tumor microenvironment. Here, we developed an approach to reprogram tumor cells in vivo by adenoviral delivery of the transcription factors PU.1, IRF8, and BATF3, which enabled them to present antigens as type 1 conventional dendritic cells.

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Background And Objective: Randomized controlled trials (RCTs) inform health-care decisions. Unfortunately, some published RCTs contain false data, and some appear to have been entirely fabricated. Systematic reviews are performed to identify and synthesize all RCTs which have been conducted on a given topic.

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Nicotinamide riboside modulates the reactive species interactome, bioenergetic status and proteomic landscape in a brain-region-specific manner.

Neurobiol Dis

October 2024

Faculty of Science and Engineering, Department of Molecular Pharmacology, Groningen Research Institute of Pharmacy (GRIP), University of Groningen, 9713, AV, Groningen, the Netherlands. Electronic address:

Article Synopsis
  • * The study investigated NR's effects using various models that simulate oxidative stress, aging, and AD, focusing on neuronal survival and the complex interactions of reactive species.
  • * Findings reveal that NR treatment affects specific protein networks related to energy metabolism and neurotransmitter regulation, suggesting potential pathways for modifying the disease processes in AD.
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Aim: AMP-activated protein kinase (AMPK) is activated during cellular energy perturbation. AMPK complexes are composed of three subunits and several variants of AMPK are expressed in skeletal muscle. The regulatory AMPKγ3 subunit is predominantly expressed in fast-twitch muscle fibers.

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Advanced glycation end-products (AGEs), formed endogenously or obtained exogenously from diet, may contribute to chronic inflammation, intracellular signaling alterations, and pathogenesis of several chronic diseases including colorectal cancer (CRC). However, the role of AGEs in CRC survival is less known. The associations of pre-diagnostic circulating AGEs and their soluble receptor (sRAGE) with CRC-specific and overall mortality were estimated using multivariable-adjusted Cox proportional hazards regression among 1369 CRC cases in the European Prospective Investigation into Cancer and Nutrition (EPIC) study.

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Article Synopsis
  • Lysine L-lactylation (K) is a new type of protein modification that is influenced by L-lactate and has three isomers often confused in research.
  • Two methods are introduced to differentiate these isomers: one involves chemical derivatization combined with high-performance liquid chromatography, and the other uses specific antibodies for accurate identification.
  • The study finds that K is primarily present in histones and is mainly regulated by glycolysis, indicating a significant link between this modification and metabolic processes like the Warburg effect.
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Article Synopsis
  • - The centromere, crucial for chromosome stability, relies on CENP-A-containing nucleosomes for proper microtubule attachment during cell division.
  • - The Mis18 complex, consisting of Mis18α, Mis18β, and Mis18BP1, plays a key role in maintaining centromere identity by facilitating CENP-A loading through its specific chaperone, HJURP.
  • - Research reveals the structure of the Mis18 complex and identifies key interactions needed for assembly and function, emphasizing that while Mis18α can associate with the centromere independently, Mis18β is essential for effective CENP-A loading.
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