1,412 results match your criteria: "Institute for Molecular Medicine Finland-FIMM[Affiliation]"

Ribotin: automated assembly and phasing of rDNA morphs.

Bioinformatics

March 2024

Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland.

Motivation: The ribosomal DNA (rDNA) arrays are highly repetitive and homogenous regions which exist in all life. Due to their repetitiveness, current assembly methods do not fully assemble the rDNA arrays in humans and many other eukaryotes, and so variation within the rDNA arrays cannot be effectively studied.

Results: Here, we present the tool ribotin to assemble full length rDNA copies, or morphs.

View Article and Find Full Text PDF
Article Synopsis
  • Acute myeloid leukemia (AML) is a tough-to-treat blood cancer that requires drug combinations to improve efficacy, as single-drug treatments often fail.
  • Researchers created a bipartite network from patient tumor samples and approved drugs to analyze treatment responses and identify effective combinations while considering both efficacy and toxicity.
  • Their findings highlighted two promising drug combinations, ruxolitinib-ulixertinib and sapanisertib-LY3009120, which showed high effectiveness and low toxicity, paving the way for personalized AML treatments along with standard therapies.
View Article and Find Full Text PDF

The tall cell subtype (TC-PTC) is an aggressive subtype of papillary thyroid carcinoma (PTC). The TC-PTC is defined as a PTC comprising at least 30% epithelial cells that are three times as tall as they are wide. In practice, this definition is difficult to adhere to, resulting in high inter-observer variability.

View Article and Find Full Text PDF

Optic neuritis (ON) is associated with numerous immune-mediated inflammatory diseases, but 50% patients are ultimately diagnosed with multiple sclerosis (MS). Differentiating MS-ON from non-MS-ON acutely is challenging but important; non-MS ON often requires urgent immunosuppression to preserve vision. Using data from the United Kingdom Biobank we showed that combining an MS-genetic risk score (GRS) with demographic risk factors (age, sex) significantly improved MS prediction in undifferentiated ON; one standard deviation of MS-GRS increased the Hazard of MS 1.

View Article and Find Full Text PDF

Nightmares are vivid, extended, and emotionally negative or negative dreams that awaken the dreamer. While sporadic nightmares and bad dreams are common and generally harmless, frequent nightmares often reflect underlying pathologies of emotional regulation. Indeed, insomnia, depression, anxiety, or alcohol use have been associated with nightmares in epidemiological and clinical studies.

View Article and Find Full Text PDF

Background: Predictive models show promise in healthcare, but their successful deployment is challenging due to limited generalizability. Current external validation often focuses on model performance with restricted feature use from the original training data, lacking insights into their suitability at external sites. Our study introduces an innovative methodology for evaluating features during both the development phase and the validation, focusing on creating and validating predictive models for post-surgery patient outcomes with improved generalizability.

View Article and Find Full Text PDF

Association of antidepressant and benzodiazepine use, and anticholinergic burden with cognitive performance in schizophrenia.

Schizophr Res

April 2024

Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Mental Health Unit, Finnish Institute for Health and Welfare, Helsinki, Finland.

Schizophrenia is characterized by cognitive impairment affecting everyday functioning. Earlier research has hypothesized that antidepressants may associate with better cognitive functioning, but results are mixed. This study explored the association between antidepressant use and cognitive performance in terms of reaction time and visual learning in a clinical sample.

View Article and Find Full Text PDF

Loci on chromosome 20 interact with rs16969968 to influence cigarettes per day in European ancestry individuals.

Drug Alcohol Depend

April 2024

Institute for Behavioral Genetics, University of Colorado, Boulder, USA; Departments of Neurology and Computer Science, University of California, Los Angeles, USA; Department of Integrative Physiology, University of Colorado, Boulder, USA. Electronic address:

Background: The understanding of the molecular genetic contributions to smoking is largely limited to the additive effects of individual single nucleotide polymorphisms (SNPs), but the underlying genetic risk is likely to also include dominance, epistatic, and gene-environment interactions.

Methods: To begin to address this complexity, we attempted to identify genetic interactions between rs16969968, the most replicated SNP associated with smoking quantity, and all SNPs and genes across the genome.

Results: Using the UK Biobank European subsample, we found one SNP, rs1892967, and two genes, PCNA and TMEM230, that showed a significant genome-wide interaction with rs16969968 for log10 CPD and raw CPD, respectively, in a sample of 116 442 individuals who self-reported currently or previously smoking.

View Article and Find Full Text PDF

Rare or novel missense variants in large genes such as TTN and NEB are frequent in the general population, which hampers the interpretation of putative disease-causing biallelic variants in patients with sporadic neuromuscular disorders. Often, when the first initial genetic analysis is performed, the reconstructed haplotype, i.e.

View Article and Find Full Text PDF
Article Synopsis
  • The study addresses the need for predictive biomarkers for the effectiveness of immune checkpoint inhibitors (ICIs) in treating non-small cell lung cancer (NSCLC) using data from two clinical trials.
  • A competition, the Anti-PD-1 Response Prediction DREAM Challenge, involved 59 teams submitting 417 predictive models based on various biological variables to forecast patient outcomes with ICIs.
  • The results indicate that the best models outperformed existing reference variables like tumor mutational burden (TMB) and PD-L1 expression, potentially paving the way for future research in other cancers with similar approaches.
View Article and Find Full Text PDF
Article Synopsis
  • Type 2 diabetes (T2D) is a complex disease influenced by various genetic factors and molecular mechanisms that vary by cell type and ancestry.
  • In a large study involving over 2.5 million individuals, researchers identified 1,289 significant genetic associations linked to T2D, including 145 new loci not previously reported.
  • The study categorized T2D signals into eight distinct clusters based on their connections to cardiometabolic traits and showed that these genetic profiles are linked to vascular complications, emphasizing the role of obesity-related processes across different ancestry groups.
View Article and Find Full Text PDF

Nanobody engineering for SARS-CoV-2 neutralization and detection.

Microbiol Spectr

April 2024

Institute of Biotechnology, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland.

Unlabelled: In response to the ongoing COVID-19 pandemic, the quest for coronavirus inhibitors has inspired research on a variety of small proteins beyond conventional antibodies, including robust single-domain antibody fragments, i.e., "nanobodies.

View Article and Find Full Text PDF

Background: Gestational diabetes mellitus (GDM) and type 2 diabetes mellitus (T2DM) share many pathophysiological factors including genetics, but whether epigenetic marks are shared is unknown. We aimed to test whether a DNA methylation risk score (MRS) for T2DM was associated with GDM across ancestry and GDM criteria.

Methods: In two independent pregnancy cohorts, EPIPREG (n = 480) and EPIDG (n = 32), DNA methylation in peripheral blood leukocytes was measured at a gestational age of 28 ± 2.

View Article and Find Full Text PDF

Epidemiological studies have robustly linked lower birth weight to later-life disease risks. These observations may reflect the adverse impact of intrauterine growth restriction on a child's health. However, causal evidence supporting such a mechanism in humans is largely lacking.

View Article and Find Full Text PDF

Functional / missense variant is associated with hematocrit in Andean highlanders.

Sci Adv

February 2024

Division of Pulmonary, Critical Care, Sleep Medicine, and Physiology, Department of Medicine, University of California, San Diego, La Jolla, CA, USA.

Hypoxia-inducible factor pathway genes are linked to adaptation in both human and nonhuman highland species. , a notable target of hypoxia adaptation, is associated with relatively lower hemoglobin concentration in Tibetans. We provide evidence for an association between an adaptive variant (rs570553380) and the same phenotype of relatively low hematocrit in Andean highlanders.

View Article and Find Full Text PDF

Infection with Lassa virus (LASV) can cause Lassa fever, a haemorrhagic illness with an estimated fatality rate of 29.7%, but causes no or mild symptoms in many individuals. Here, to investigate whether human genetic variation underlies the heterogeneity of LASV infection, we carried out genome-wide association studies (GWAS) as well as seroprevalence surveys, human leukocyte antigen typing and high-throughput variant functional characterization assays.

View Article and Find Full Text PDF

Unhealthy aging poses a global challenge with profound healthcare and socioeconomic implications. Slowing down the aging process offers a promising approach to reduce the burden of a number of age-related diseases, such as dementia, and promoting healthy longevity in the old population. In response to the challenge of the aging population and with a view to the future, Norway and the United Kingdom are fostering collaborations, supported by a "Money Follows Cooperation agreement" between the 2 nations.

View Article and Find Full Text PDF

Alcohol use-associated alterations in the circulating metabolite profile in the general population and in individuals with major depressive disorder.

Alcohol

November 2024

Institute of Clinical Medicine, University of Oslo, Oslo, Norway; R&D Department, Division of Mental Health Services, Akershus University Hospital, Lørenskog, Norway; Psychiatry, University of Helsinki and Helsinki University Hospital, P.O. Box 20, FI-00014 Helsinki, Finland.

Our aim was to evaluate whether alcohol use is associated with changes in the circulating metabolite profile similar to those present in persons with depression. If so, these findings could partially explain the link between alcohol use and depression. We applied a targeted liquid chromatography mass spectrometry method to evaluate correlates between concentrations of 86 circulating metabolites and self-reported alcohol use in a cohort of the non-depressed general population (GP) (n = 247) and a cohort of individuals with major depressive disorder (MDD) (n = 99).

View Article and Find Full Text PDF

Metabolic syndrome and epigenetic aging: a twin study.

Int J Obes (Lond)

June 2024

Faculty of Sport and Health Sciences, Gerontology Research Center, University of Jyväskylä, Jyväskylä, Finland.

Background: Metabolic syndrome (MetS) is associated with premature aging, but whether this association is driven by genetic or lifestyle factors remains unclear.

Methods: Two independent discovery cohorts, consisting of twins and unrelated individuals, were examined (N = 268, aged 23-69 years). The findings were replicated in two cohorts from the same base population.

View Article and Find Full Text PDF

Drug repurposing platform for deciphering the druggable SARS-CoV-2 interactome.

Antiviral Res

March 2024

Department of Virology, Medicum, University of Helsinki, Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland; HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.

The coronavirus disease 2019 (COVID-19) pandemic has heavily challenged the global healthcare system. Despite the vaccination programs, the new virus variants are circulating. Further research is required for understanding of the biology of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and for discovery of therapeutic agents against the virus.

View Article and Find Full Text PDF

Global emphasis on enhancing prevention and treatment strategies necessitates an increased understanding of the biological mechanisms of psychopathology. Plasma proteomics is a powerful tool that has been applied in the context of specific mental disorders for biomarker identification. The p-factor, also known as the "general psychopathology factor", is a concept in psychopathology suggesting that there is a common underlying factor that contributes to the development of various forms of mental disorders.

View Article and Find Full Text PDF

PTPRF interacting protein alpha 1 (PPFIA1) encodes for liprin-α1, a member of the leukocyte common antigen-related protein tyrosine phosphatase (LAR-RPTPs)-interacting protein family. Liprin-α1 localizes to adhesive and invasive structures in the periphery of cancer cells, where it modulates migration and invasion in head and neck squamous cell carcinoma (HNSCC) and breast cancer. To study the possible role of liprin-α1 in anticancer drug responses, we screened a library of oncology compounds in cell lines with high endogenous PPFIA1 expression.

View Article and Find Full Text PDF

Introduction: Relatively little is known about whether the association between smoking and depressive symptoms changes with age and how the trajectories of smoking and depressive symptoms are intertwined during the life course. In this population-based study, these associations were examined from young adulthood to middle age.

Methods: Participants of a Finnish cohort study (N = 1955) were assessed at the ages of 22, 32, 42, and 52 using questionnaires covering daily smoking (yes/no) and the short 13-item Beck Depression Inventory.

View Article and Find Full Text PDF