17,650 results match your criteria: "German Cancer Research Center DKFZ & Bioquant[Affiliation]"

Glioma associated macrophages/microglia (GAMs) play an important role in glioblastoma (GBM) progression, due to their massive recruitment to the tumor site and polarization to a tumor promoting phenotype. GAMs secrete a variety of cytokines, which facilitate tumor cell growth and invasion, and prevent other immune cells from mounting an immune response against the tumor. Here, we demonstrate that zinc finger and BTB containing domain 18 (ZBTB18), a transcriptional repressor with tumor suppressive function in glioblastoma, impairs the production of key cytokines, which function as chemoattractant for GAMs.

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Purpose: This systematic review aims to summarize the associations between combined healthy lifestyles and psychosocial outcomes (health-related quality of life (HRQOL), depression, anxiety, psychological distress (PD), and posttraumatic stress disorder (PTSD)) among cancer survivors.

Methods: PubMed, Web of Science, Cochrane Library, and EMBASE were searched for observational and interventional studies examining healthy lifestyle scores (HLS, calculated by a combination of at least three lifestyles) and psychosocial outcomes among cancer survivors from inception to April 2024. A minimum of two studies with the same study design were pooled using random effects models.

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Tsa1 is the dominant peroxide scavenger and a source of HO-dependent GSSG production in yeast.

Free Radic Biol Med

January 2025

Institute of Biochemistry, Centre for Human and Molecular Biology (ZHMB), Saarland University, 66123, Saarbrücken, Germany. Electronic address:

Hydrogen peroxide (HO) is an important biological molecule, functioning both as a second messenger in cell signaling and, especially at higher concentrations, as a cause of cell damage. Cells harbor multiple enzymes that have peroxide reducing activity in vitro. However, the contribution of each of these enzymes towards peroxide scavenging in vivo is less clear.

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Targeting the immune privilege of tumor-initiating cells to enhance cancer immunotherapy.

Cancer Cell

December 2024

State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Electronic address:

Tumor-initiating cells (TICs) possess the ability to evade anti-tumor immunity, potentially explaining many failures of cancer immunotherapy. Here, we identify CD49f as a prominent marker for discerning TICs in hepatocellular carcinoma (HCC), outperforming other commonly used TIC markers. CD49f-high TICs specifically recruit tumor-promoting neutrophils via the CXCL2-CXCR2 axis and create an immunosuppressive milieu in the tumor microenvironment (TME).

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2-[18F]F-p-aminobenzoic acid specifically detects infective endocarditis in positron emission tomography.

J Infect Dis

November 2024

Department of Nuclear Medicine, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

Background: To the present day infective endocarditis (IE) represents a life-threatening disease with high mortality rate especially when caused by Staphylococcus aureus (S. aureus), the most common causative pathogen in this disease. Diagnosis of IE is based on clinical manifestations, pathogen detection by blood cultures and echocardiographic or other imaging findings.

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Within the tumor microenvironment (TME), cancer-associated fibroblasts (CAFs) were shown to be an active and pivotal cell population, supporting many protumorigenic mechanisms. Podoplanin (PDPN)-positive CAFs are of special interest since their abundance correlated with a worse prognosis for patients of different cancer entities, including malignant melanoma. In this study, we applied a loss-of-function approach in an in vivo mouse melanoma model to evaluate the contribution of CAF-specific PDPN expression to melanoma formation and progression.

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Experimental research has uncovered lipocalin 2 (LCN2) as a novel biomarker implicated in the modulation of intestinal inflammation, metabolic homeostasis, and colon carcinogenesis. However, evidence from human research has been scant. We, therefore, explored the association of pre-diagnostic circulating LCN2 concentrations with incident colorectal cancer (CRC) in a nested case-control study within the in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort.

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Background: To investigate the ability of artificial intelligence (AI)-based and semi-quantitative dynamic contrast enhanced (DCE) multiparametric MRI (mpMRI), performed within [F]-PSMA-1007 PET/MRI, in differentiating benign from malignant prostate tissues in patients with primary prostate cancer (PC).

Results: A total of seven patients underwent whole-body [F]-PSMA-1007 PET/MRI examinations including a pelvic mpMRI protocol with T2w, diffusion weighted imaging (DWI) and DCE image series. Conventional analysis included visual reading of PET/MRI images and Prostate Imaging Reporting & Data System (PI-RADS) scoring of the prostate.

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With no more than two dozen cases reported in the literature, malignant peripheral nerve sheath tumor (MPNST) is a rare primary mesenchymal neoplasm arising in the female genital tract. Most cases occurred in middle-aged adults with high grade histology, unfavorable clinical outcome, and no history of neurofibromatosis type 1. Its extreme rarity in this site no doubt poses a diagnostic challenge during routine clinical practice.

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Background And Objective: Data on interaction of patients with artificial intelligence (AI) are limited, primarily derived from small-scale studies, cross-sectional surveys, and qualitative reviews. Most patients have not yet encountered AI in their clinical experience. This study explored patients' confidence in AI, specifically large language models, after a direct interaction with a chatbot in a clinical setting.

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Outcomes with intensive treatment for acute myeloid leukemia: an analysis of two decades of data from the HARMONY Alliance.

Haematologica

November 2024

Department of Hematology, Oncology and Cancer Immunology, Campus Virchow, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg.

Article Synopsis
  • Since 2017, combining targeted therapies with traditional chemotherapy has led to better outcomes for acute myeloid leukemia (AML) patients.
  • A study of 5,359 AML patients over 20 years used data from the HARMONY Alliance to analyze treatment outcomes during four 5-year periods from 1997 to 2016.
  • Results show significant improvements in 5-year survival rates and reduced 60-day mortality (from 13.0% to 4.7%), even across different genetic risk groups, indicating that the advancements in treatment have positively affected patient outcomes.
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The chromosomal theory of inheritance dictates that genes on the same chromosome segregate together while genes on different chromosomes assort independently. Extrachromosomal DNAs (ecDNAs) are common in cancer and drive oncogene amplification, dysregulated gene expression and intratumoural heterogeneity through random segregation during cell division. Distinct ecDNA sequences, termed ecDNA species, can co-exist to facilitate intermolecular cooperation in cancer cells.

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Genetic variation at the 19q13.3 KLK locus is linked with prostate cancer susceptibility in men. The non-synonymous KLK3 single nucleotide polymorphism (SNP), rs17632542 (c.

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Oxygen consumption measurements at ultra-high dose rate over a wide LET range.

Med Phys

November 2024

Clinical Cooperation Unit Translational Radiation Oncology, National Center for Tumor Diseases (NCT), Heidelberg University Hospital (UKHD) and German Cancer Research Center (DKFZ), Heidelberg, Germany.

Background: The role of radiolytic oxygen consumption for the in-vitro "Ultra-High Dose Rate" (UHDR) sparing and in-vivo FLASH effect is subject to active debate, but data on key dependencies such as the radiation quality are lacking.

Purpose: The influence of "dose-averaged Linear Energy Transfer" (LETd) and dose rate on radiolytic oxygen consumption was investigated by monitoring the oxygen concentration during irradiation with electrons, protons, helium, carbon, and oxygen ions at UHDR and "Standard Dose Rates" (SDR).

Methods: Sealed "Bovine Serum Albumin" (BSA) 5% samples were exposed to 15 Gy of electrons and protons, and for the first time helium, carbon, and oxygen ions with LETd values of 1, 5.

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Article Synopsis
  • - The study validates a new DNA methylation-based predictor for meningiomas that has been enhanced for use with modern methylation arrays and shows improved accuracy over the standard 2021 WHO grading system.
  • - It uses data from 1,347 meningioma cases, including prospective cases and an external cohort, demonstrating that both the new and original models effectively predict early postoperative recurrence, especially within specific risk subgroups.
  • - The new predictor, which is simpler with fewer features, allows for better clinical decision-making, including the use of adjuvant radiotherapy for high-risk patients, and is available as an easy-to-use tool for improved patient stratification in clinical trials.
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Conjugation of Polycationic Peptides Extends the Efficacy Spectrum of β-Lactam Antibiotics.

Adv Sci (Weinh)

December 2024

Department of Pharmaceutical Technology, Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, 69120, Heidelberg, Germany.

Antibiotic-resistant enterococci represent a significant global health challenge. Unfortunately, most β-lactam antibiotics are not applicable for enterococcal infections due to intrinsic resistance. To extend their antimicrobial spectrum, polycationic peptides are conjugated to examples from each of the four classes of β-lactam antibiotics.

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Background: Immune dysregulation is a hallmark of autoimmune diseases of the central nervous system (CNS), characterized by an excessive immune response, and primary CNS tumors (pCNS-tumors) showing a highly immunosuppressive parenchymal microenvironment.

Methods: Aiming to provide novel insights into the pathogenesis of CNS autoimmunity and cerebral tumor immunity, we analyzed the peripheral blood (PB) and cerebrospinal fluid (CSF) of 81 autoimmune limbic encephalitis (ALE), 148 relapsing-remitting multiple sclerosis (RRMS), 33 IDH-wildtype glioma, 9 primary diffuse large B cell lymphoma of the CNS (CNS-DLBCL), and 110 controls by flow cytometry (FC). Additionally, an in-depth immunophenotyping of the PB from an independent cohort of 20 RRMS and 18 IDH-wildtype glioblastoma patients compared to 19 controls was performed by FC combined with unsupervised computational approaches.

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Germline copy number variants and endometrial cancer risk.

Hum Genet

December 2024

Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand.

Article Synopsis
  • Known genetic risk factors account for about one-third of familial endometrial cancer cases, but the link between rare germline copy number variants (CNVs) and cancer risk is not well understood.
  • A study analyzed DNA from over 4,000 endometrial cancer patients and nearly 18,000 controls, finding that the cancer group had a significantly higher number of CNVs.
  • The research identified 141 gene loci potentially related to endometrial cancer risk, highlighting a specific area (16p11.2) with recurrent deletions that could help further investigations into genetic susceptibility.
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Central nervous system neuroblastoma with forkhead box R2 (FOXR2) activation (NB-FOXR2) is a high-grade tumor of the brain hemispheres and a newly identified molecular entity. Tumors express dual neuronal and glial markers, leading to frequent misdiagnoses, and limited information exists on the role of FOXR2 in their genesis. To identify their cellular origins, we profiled the transcriptomes of NB-FOXR2 tumors at the bulk and single-cell levels and integrated these profiles with large single-cell references of the normal brain.

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Enzymes Repertoires and Genomic Insights into Lycium Barbarum Pectin Polysaccharides Biosynthesis.

Genomics Proteomics Bioinformatics

November 2024

Key Laboratory of Epigenetic Regulation and Intervention, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.

Lycium barbarum, a member of the Solanaceae family, represents an important eudicot lineage with homology of food and medicine. Lycium barbarum pectin polysaccharides (LBPPs) are key bioactive ingredients of Lycium barbarum, and are among the few polysaccharides with both biocompatibility and biomedical activity. While previous studies have primarily focused on the functional properties of LBPPs, the mechanisms of biosynthesis and transport by key enzymes remain poorly understood.

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Introduction: Hyperthermia (HT) at temperatures between 39 °C and 44 °C is utilized as an adjunctive cancer therapy, serving as potent radio- and chemosensitizer. Its effectiveness in treating solid malignancies has been well established. This raises the question of whether HT can also benefit patients with nonsolid tumors, such as lymphomas.

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GUCA2A dysregulation as a promising biomarker for accurate diagnosis and prognosis of colorectal cancer.

Clin Exp Med

November 2024

Hematology, Oncology and Stem Cell Transplantation Research Center, Research Institute for Oncology, Hematology and Cell Therapy, Tehran University of Medical Sciences, Tehran, Iran.

Article Synopsis
  • * The study employed extensive analyses of colorectal cancer datasets and imposed a pan-cancer review to find DEGs uniquely linked to colon cancer, confirming GUCA2A's crucial role through various bioinformatics and validation techniques.
  • * GUCA2A showed outstanding diagnostic capability, indicating a strong correlation between its expression and patient outcomes, marking it as a potential biomarker for prognosis and diagnosis in colorectal cancer.
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