Publications by authors named "Furkel J"

Article Synopsis
  • Cardiac macrophages play a crucial role in enhancing electrical conduction through the atrioventricular node (AV) in mice and may influence the effectiveness of antiarrhythmic drugs like flecainide.
  • In experiments, mice with modified macrophages showed no significant issues in electrical conduction but had a reduced response to flecainide, reflected in less pronounced changes in heart rhythm intervals.
  • Coupling between macrophages and cardiomyocytes improves the drug's effects by increasing the presence of specific proteins (Cx43 and Na1.5) on the cell membrane, leading to greater changes in cell membrane potential and action potential duration.
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mA mRNA methylation controls cardiomyocyte function and increased overall mA levels are a stereotyping finding in heart failure independent of the underlying etiology. However, it is largely unknown how the information is read by mA reader proteins in heart failure. Here we show that the mA reader protein Ythdf2 controls cardiac function and identified a novel mechanism how reader proteins control gene expression and cardiac function.

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Background: Selective uptake of (18)F-fluoro-ethyl-tyrosine (F-FET) is used in high-grade glioma (HGG) to assess tumor metabolic activity positron emission tomography (PET). We aim to investigate its value for target volume definition, as a prognosticator, and associations with whole-blood transcriptome liquid biopsy (WBT lbx) for which we recently reported feasibility to mirror tumor characteristics and response to particle irradiation in recurrent HGG (rHGG).

Methods: F-FET-PET data from n = 43 patients with primary glioblastoma (pGBM) and n = 33 patients with rHGG were assessed.

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Radiotherapy can act as an in situ vaccine, activating preventive tumor-specific immune responses in patients. Although carbon ion radiotherapy has superior biophysical properties over conventional photon irradiation, the immunological effects induced by this radiation type are poorly understood. Multiple strategies combining radiotherapy with immune checkpoint inhibition (radioimmunotherapy) to enhance antitumor immunity have been described; however, immune cell composition in tumors following radioimmunotherapy with carbon ions remains poorly explored.

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Background: Targeted immunotherapies are of growing interest in the treatment of various cancers. B7 homolog 3 protein (B7-H3), a member of the co-stimulatory/-inhibitory B7-family, exerts immunosuppressive and pro-tumorigenic functions in various cancer types and is under evaluation in ongoing clinical trials. Unfortunately, interaction partner(s) remain unknown which restricts the druggability.

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Purpose: To assess the value of whole blood transcriptome data from liquid biopsy (lbx) in recurrent high-grade glioma (rHGG) patients for longitudinal molecular monitoring of tumor evolution under carbon ion irradiation (CIR).

Methods: Whole blood transcriptome (WBT) analysis (Illumina HumanHT-12 Expression BeadChips) was performed in 14 patients with rHGG pre re-irradiation (reRT) with CIR and 3, 6 and 9 weeks post-CIR (reRT grade III:5, 36%, IV:9, 64%). Patients were irradiated with 30, 33, 36 GyRBE ( = 5, 6, 3) in 3GyRBE per fraction.

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Cellular morphology has the capacity to serve as a surrogate for cellular state and functionality. However, primary cardiomyocytes, the standard model in cardiovascular research, are highly heterogeneous cells and therefore impose methodological challenges to analysis. Hence, we aimed to devise a robust methodology to deconvolute cardiomyocyte morphology on a single-cell level: C-MORE (cellular morphology recognition) is a workflow from bench to data analysis tailored for heterogeneous primary cells using our R package cmoRe.

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The mechanistic target of rapamycin (mTOR) promotes pathological remodeling in the heart by activating ribosomal biogenesis and mRNA translation. Inhibition of mTOR in cardiomyocytes is protective; however, a detailed role of mTOR in translational regulation of specific mRNA networks in the diseased heart is unknown. We performed cardiomyocyte genome-wide sequencing to define mTOR-dependent gene expression control at the level of mRNA translation.

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Localized radiotherapy (RT) induces an immunogenic antitumor response that is in part counterbalanced by activation of immune evasive and tissue remodeling processes, e.g., via upregulation of programmed cell death-ligand 1 (PD-L1) and transforming growth factor β (TGF-β).

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Article Synopsis
  • Elevated interleukin-6 (IL-6) levels are linked to worse outcomes in patients with cardiac ATTR amyloidosis (ATTR-CM) and are more pronounced in those with more severe clinical presentations.
  • The study involved measuring IL-6 levels in 106 ATTR-CM patients, along with asymptomatic carriers and healthy controls, finding significant differences in levels particularly between wild-type patients and healthy controls.
  • While high IL-6 levels are associated with poor outcomes, it did not enhance risk prediction beyond existing established prognostic factors.
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Background: Model building is a crucial part of omics based biomedical research to transfer classifications and obtain insights into underlying mechanisms. Feature selection is often based on minimizing error between model predictions and given classification (maximizing accuracy). Human ratings/classifications, however, might be error prone, with discordance rates between experts of 5-15%.

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Article Synopsis
  • The study investigates how toxic effects from transthyretin amyloid in patient plasma affect heart cells (cardiomyocytes) and their growth response, particularly when stimulated with phenylephrine.
  • A novel measure called the Hypertrophic Index was introduced to assess changes in cell size after treatment, revealing that plasma from certain patient groups resulted in reduced growth response compared to healthy controls.
  • The findings showed that this reduced growth response was a significant independent risk factor for various clinical outcomes, such as heart failure and death, even when accounting for other established risk factors.
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Background: Projection of future cancer incidence is an important task in cancer epidemiology. The results are of interest also for biomedical research and public health policy. Age-Period-Cohort (APC) models, usually based on long-term cancer registry data (> 20 yrs), are established for such projections.

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Lentiviral modification of hematopoietic stem cells (HSCs) paved the way for in vivo experimentation and therapeutic approaches in patients with genetic disease. A disadvantage of this method is the use of a ubiquitous promoter leads not only to genetic modification of the leukocyte subset of interest e.g.

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