Johann Mar Gudbergsson

ORCID: 0000-0003-2757-009X
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About
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Research Areas
  • Extracellular vesicles in disease
  • MicroRNA in disease regulation
  • RNA Interference and Gene Delivery
  • Glioma Diagnosis and Treatment
  • Cell Adhesion Molecules Research
  • Cellular Mechanics and Interactions
  • RNA Research and Splicing
  • Cancer, Hypoxia, and Metabolism
  • Neurological Disease Mechanisms and Treatments
  • Developmental Biology and Gene Regulation
  • Cancer Research and Treatments
  • Circular RNAs in diseases
  • Iron Metabolism and Disorders
  • Single-cell and spatial transcriptomics
  • Trace Elements in Health
  • T-cell and B-cell Immunology
  • Signaling Pathways in Disease
  • Barrier Structure and Function Studies
  • Mitochondrial Function and Pathology
  • Inflammatory Biomarkers in Disease Prognosis
  • Diet and metabolism studies
  • Lipid Membrane Structure and Behavior
  • Autophagy in Disease and Therapy
  • Photoacoustic and Ultrasonic Imaging
  • Cancer Cells and Metastasis

Aarhus University
2024-2025

Aalborg University
2014-2024

Technical University of Denmark
2021

Faculty (United Kingdom)
2015

Low density lipoprotein receptor-related protein 2 (LRP2) is a 600 kilodalton multi-ligand endocytic membrane receptor expressed in several cell types during fetal development, including neuroepithelial cells, and select absorptive epithelial cells the adult. In cancers, LRP2 expression associated with differentiated tumor state better prognosis. previous work, we found that while not benign naevi, it frequently acquired melanoma. However, molecular drivers of melanoma characteristics...

10.1101/2025.02.21.639443 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2025-02-27

Macrophages infiltrate all human tissues where they play key roles in innate immunity, homeostasis, and tissue function. However, extensive clinical experimental evidence indicates that macrophages also contribute significantly to the progression of several diseases such as cancer, cardiometabolic disorders, inflammatory neurodegenerative conditions. Advances single-cell omics have revealed diverse macrophage populations both healthy diseased tissues. studying their functions is challenging...

10.1101/2025.03.12.642907 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2025-03-14

Precise methods for quantifying drug accumulation in brain tissue are currently very limited, challenging the development of new therapeutics disorders. Transcardial perfusion is instrumental removing intravascular fraction an injected compound, thereby allowing ex vivo assessment extravasation into brain. However, pathological remodeling microenvironment can affect efficiency transcardial perfusion, which has been largely overlooked. We show that, contrast to healthy vasculature, cannot...

10.1038/s42003-021-02275-y article EN cc-by Communications Biology 2021-07-01

Abstract Background Chronic neurodegenerative diseases are characterized by substantial neuroinflammation with accumulation of macrophages, reactive microglia, and astrocytes. Impairment the brain vasculature is also commonly seen in chronic neurodegeneration causal links warranting further investigation. Methods To address effects on regional vasculature, we performed a unilateral injection glutamate receptor agonist ibotenic acid into striatum adult rats, which caused excitotoxicity...

10.1101/2024.04.15.589475 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2024-04-19

Chronic neurodegenerative diseases are characterized by substantial inflammation with putative impairment of the brain vasculature also commonly observed. To address effects chronic neurodegeneration on regional under experimentally controlled circumstances, glutamate receptor agonist ibotenic acid was injected into striatum adult rats, which causes excitotoxicity in substantia nigra pars reticulata (SNpr) due to imbalance between inhibitory inputs from and excitatory signals subthalamic...

10.1016/j.nbd.2024.106761 article EN cc-by-nc Neurobiology of Disease 2024-12-01

Abstract Cripto‐1 is a protein expressed during embryonal development and has been linked to several malignant processes in cancer. Since the discovery of cripto‐1 late 1980s, it become subject biomarker investigation types cancer which many cases relies on immunolocalization using antibodies. Investigating expression localization primary glioblastoma cells, we discovered nonspecific binding antibody extracellular matrix Geltrex. A panel four antibodies was investigated with respect their...

10.1002/jcb.29293 article EN Journal of Cellular Biochemistry 2019-07-16
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