HSV efficiently infects dendritic cells (DCs) in their immature state and induces down-regulation of costimulatory and adhesion molecules. As in mice, HSV infection of human DCs also leads to their rapid and progressive apoptosis, and we show that both early and late viral proteins contribute to its induction. Because topical HSV infection is confined to the epidermis, Langerhans cells are expected to be the major APCs in draining lymph nodes. However, recent observations in murine models show T cell activation to be mediated by nonepidermal DC subsets, suggesting cross-presentation of viral Ag. In this study we provide an explanation for this phenomenon, demonstrating that HSV-infected apoptotic DCs are readily phagocytosed by uninfected bystander DCs, which, in turn, stimulate virus-specific CD8+ T cell clones.
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http://dx.doi.org/10.4049/jimmunol.174.4.2220 | DOI Listing |
mBio
January 2025
Department of Medical and Molecular Genetics and Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana, USA.
causes the genital ulcer disease chancroid and cutaneous ulcers in children. To study its pathogenesis, we developed a human challenge model in which we infect the skin on the upper arm of human volunteers with to the pustular stage of disease. The model has been used to define lesional architecture, describe the immune infiltrate into the infected sites using flow cytometry, and explore the molecular basis of the immune response using bulk RNA-seq.
View Article and Find Full Text PDFHum Vaccin Immunother
December 2025
Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China.
Although neo-antigen mRNA vaccines are promising for personalized cancer therapy, their effectiveness is often limited by the immunosuppressive tumor microenvironment (TME). The adenosine AA receptor (AAR) inhibits dendritic cell (DC) function and weakens antitumor T cell responses through hypoxia-driven mechanisms within the TME. This review explores a novel strategy combining neo-antigen mRNA vaccines with AAR antagonists (AARi).
View Article and Find Full Text PDFRSC Adv
January 2025
School of Physical Sciences, Great Bay University Dongguan 523000 China
DNA-based nanomaterials have attracted increasing attention over the past decades due to their incomparable programmability and functionality. In particular, dendritic DNA nanostructures are ideal for constructing drug carriers due to their highly branched structure. In this study, an intelligent drug delivery system was constructed based on DNA dendrimers, in which the DNA duplexes were utilized for simultaneously loading both hydrophilic and hydrophobic small molecule drugs.
View Article and Find Full Text PDFFront Mol Neurosci
January 2025
Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland.
Introduction: The neuron-specific K-Cl cotransporter KCC2 maintains low intracellular chloride levels, which are crucial for fast GABAergic and glycinergic neurotransmission. KCC2 also plays a pivotal role in the development of excitatory glutamatergic neurotransmission by promoting dendritic spine maturation. The cytoplasmic C-terminal domain (KCC2-CTD) plays a critical regulatory role in the molecular mechanisms controlling the cotransporter activity through dimerization, phosphorylation, and protein interaction.
View Article and Find Full Text PDFCureus
December 2024
Department of Anesthesiology and Critical Care, Duke University Medical Center, Durham, USA.
Histiocytic disorders include a range of uncommon illnesses marked by the buildup of cells that have developed into macrophages, dendritic cells, or monocytes in diverse tissues and organs. Over 100 distinct subtypes have been documented, exhibiting a diverse array of clinical symptoms, presentations, and histologic features that can be confused with other clinical conditions leading to delayed diagnosis. They affect both children and adults, generating a variety of clinical symptoms that can be limited to one position, numerous areas within one system, or affect many systems in the body.
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