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DNA damage and subsequent DNA repair processes are mutagenic in nature and an important driver of evolution in prokaryotes, including antibiotic resistance development. Genetic screening approaches, such as transposon sequencing (Tn-seq), have provided important new insights into gene function and genetic relationships. Here, we employed Tn-seq to gain insight into the function of the gene, which renders cells moderately sensitive to a variety of DNA-damaging agents when they are absent. The reported genetic interactions can be used in combination with future screens to aid in a more complete reconstruction of DNA repair pathways in bacteria.
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http://dx.doi.org/10.1128/jb.00184-23 | DOI Listing |
Neurology
October 2025
Alzheimer's Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic de Barcelona, Fundació Recerca Clínic Barcelona-IDIBAPS, Spain.
Background And Objectives: α-Synuclein seed amplification assays (αSAAs) can improve the diagnosis of synucleinopathies and detect α-synuclein (αSyn) copathology in vivo in clinical practice. We aimed to evaluate the diagnostic performance of αSAA for detecting αSyn in CSF for diagnosing dementia with Lewy bodies (DLB) in a clinical cohort of cognitively impaired individuals. We explored how the coexistence of Alzheimer disease (AD) and αSyn pathology influences biomarker levels and clinical profiles.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Department of Materials Science and Engineering, College of Engineering, Texas A&M University, College Station, Texas 77843, United States.
Hydrogel-based bioinks are widely adopted in digital light processing (DLP) 3D printing. Modulating their mechanical properties is especially beneficial in biomedical applications, such as directing cell activity toward tissue regeneration and healing. However, in both monolithic and granular hydrogels, the tunability of mechanical properties is limited to parameters such as cross-linking or packing density.
View Article and Find Full Text PDFAnn Am Thorac Soc
September 2025
University of California Los Angeles David Geffen School of Medicine, Medicine, Los Angeles, California, United States.
Rationale: Inflammation is central to chronic obstructive pulmonary disease (COPD) pathogenesis but incompletely represented in COPD prognostic models. Neutrophil to lymphocyte ratio (NLR) is a readily available inflammatory biomarker.
Objectives: To explore the associations of NLR with smoking status, clinical features of COPD, and future adverse outcomes.
PLoS Pathog
September 2025
State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
Influenza B viruses (IBVs), though often overshadowed by influenza A viruses (IAVs), remain a significant global public health concern, particularly during seasons when they predominate. However, the molecular mechanisms underlying IBV pathogenicity remain largely unknown. In this study, we identified two amino acid substitutions, PB2-N460S and NP-I163T, from IBV clinical isolates with distinct replication and pathogenicity profiles.
View Article and Find Full Text PDFPLoS Biol
September 2025
Department of Virology, Immunology & Microbiology, Boston University Chobanian & Avedisian School of Medicine, Boston, Massachusetts, United States of America.
Despite the success of antiretroviral therapy in suppressing plasma viremia in people living with human immunodeficiency virus type-1 (HIV-1), persistent viral RNA expression in tissue reservoirs is observed and can contribute to HIV-1-induced immunopathology and comorbidities. Infection of long-lived innate immune cells, such as tissue-resident macrophages and microglia may contribute to persistent viral RNA production and chronic inflammation. We recently reported that de novo cytoplasmic expression of HIV-1 intron-containing RNA (icRNA) in macrophages and microglia leads to MDA5 and MAVS-dependent innate immune sensing and induction of type I IFN responses, demonstrating that HIV icRNA is a pathogen-associated molecular pattern (PAMP).
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