Journal of Leukocyte Biology

CCR2+ monocytes are dispensable to resolve acute pulmonary Pseudomonas aeruginosa infections in WT and Cystic Fibrosis mice​Hasan H Öz on 4 de October de 2024 at 10:00

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J Leukoc Biol. 2024 Oct 4:qiae218. doi: 10.1093/jleuko/qiae218. Online ahead of print. ABSTRACT Extravasation of CCR2-positive monocytes into tissue and to the site of injury is a fundamental immunological response to infections. Nevertheless, exuberant recruitment and/or activity of these monocytes and monocyte-derived macrophages can propagate tissue damage, especially in chronic inflammatory disease conditions. We have … Read more

The interaction of galectin-8 C-terminal domain with cell surface glycoconjugates modulates membrane elasticity to stimulate antigen uptake and presentation to CD4 T cells​Cecilia Arahi Prato on 4 de October de 2024 at 10:00

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J Leukoc Biol. 2024 Oct 4:qiae214. doi: 10.1093/jleuko/qiae214. Online ahead of print. ABSTRACT Galectins constitute a family of soluble lectins with unique capacity to induce macroscale rearrangements upon interacting with cell membrane glycoconjugates. Galectin-8 (Gal-8) is acknowledged for its role in facilitating antigen uptake and processing upon engaging with cell surface glycoconjugates on antigen-presenting cells … Read more

Intracellular Methylglyoxal Accumulation in Classically Activated Mouse Macrophages is Mediated by HIF-1α​Daniel Prantner on 3 de October de 2024 at 10:00

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J Leukoc Biol. 2024 Oct 3:qiae215. doi: 10.1093/jleuko/qiae215. Online ahead of print. ABSTRACT Approximately one million cases of sepsis in the U.S.A. occur annually. The early phase of sepsis features dramatic changes in host metabolism and inflammation. While examining the effects of metabolic pathways on inflammation, we discovered that the highly reactive glycolytic metabolite, methylglyoxal … Read more

Immunoresponsive Gene 1 Facilitates TLR4-agonist-Induced Augmentation of Innate Antimicrobial Immunity​Margaret A McBride on 1 de October de 2024 at 10:00

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J Leukoc Biol. 2024 Oct 1:qiae198. doi: 10.1093/jleuko/qiae198. Online ahead of print. ABSTRACT Treatment with the toll-like receptor (TLR) 4 agonist monophosphoryl lipid A (MPLA) conditions innate immunocytes to respond robustly to subsequent infection, a phenotype termed innate immune memory. Our published studies show that metabolic reprogramming of macrophages is a prominent feature of the … Read more

Immunometabolic Chaos in Septic Shock.​ Deepmala Shrestha

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J Leukoc Biol. 2024 Sep 28:qiae211. doi: 10.1093/jleuko/qiae211. Online ahead of print. ABSTRACT Septic shock is associated with over 40% mortality. The immune response in septic shock is tightly regulated by cellular metabolism and transitions from early hyper-inflammation to later hypo-inflammation. Patients are susceptible to secondary infections during hypo-inflammation. The magnitude of the metabolic dysregulation … Read more

COVID-19 extracellular vesicles display heterogeneity based on viral and host RNA expression: implications for host immune response​. Esmeralda Juárez

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J Leukoc Biol. 2024 Sep 27:qiae212. doi: 10.1093/jleuko/qiae212. Online ahead of print. ABSTRACT Viral RNA and miRNAs released by immune cells contribute to inflammation in COVID-19 patients. Here, we investigated the role of SARS-CoV2 RNA and host miRNAs carried within extracellular vesicles (EVs) in modulating inflammation. EVs were classified as positive or negative depending on … Read more

Limited proteolysis of neutrophil granule proteins by the bacterial protease RgpB depletes neutrophil antimicrobial capacity​. Kelley N Cooper

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J Leukoc Biol. 2024 Sep 25:qiae209. doi: 10.1093/jleuko/qiae209. Online ahead of print. ABSTRACT Neutrophils are highly abundant in the gingival tissues where they play an essential role in immune homeostasis by preventing microbial invasion. Here, we show that the oral periodontal pathogen Porphyromonas gingivalis utilizes its cysteine proteases (gingipains) to disengage phagosomal antimicrobial capacity. Arginine … Read more

The 129 strain-derived passenger mutations in ACKR1-deficient mice alter the expression of PYHIN and Fc-gamma receptor genes. ​Zoe Möller-Ramon

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J Leukoc Biol. 2024 Sep 25:qiae208. doi: 10.1093/jleuko/qiae208. Online ahead of print. ABSTRACT A majority of genetically modified mice have been produced using 129 strain-derived embryonic stem cells (ESCs). Despite ample backcrosses with other strains, these may retain characteristic for 129 passenger mutations leading to confounding phenotypes unrelated to targeted genes. Here we show that … Read more

Dendritic cell-specific deletion of PKCδ in offspring of allergic mothers prevents the predisposition for development of allergic lung inflammation in offspring. ​Jacquelyn D Lajiness

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J Leukoc Biol. 2024 Sep 23:qiae207. doi: 10.1093/jleuko/qiae207. Online ahead of print. ABSTRACT In humans and in mice, maternal allergy predisposes offspring to development of allergy. In murine models, increased levels of maternal β-glucosylceramides are both necessary and sufficient for the development of allergic predisposition in offspring. Furthermore, increased numbers of CD11b+ dendritic cell subsets … Read more

Neonatal neutrophils exhibit reduced NLRP3 inflammasome activation. ​Lou Martha Wackerbarth

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J Leukoc Biol. 2024 Sep 23:qiae206. doi: 10.1093/jleuko/qiae206. Online ahead of print. ABSTRACT Newborns are at high risk to develop sepsis. This is linked to innate immune responses at birth which are not completely adapted to postnatal life. Neutrophils are key players of innate immunity and exhibit a marked ontogenetic regulation of their functionality. Here, … Read more

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