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  • APLAID is a very rare autoinflammatory disease thought to be caused by mutations in PLCG2. A mouse model of APLAID recapitulates clinical features of the disease, and identifies a crucial function for G-CSF that might be targeted therapeutically.

    • Tom D. Bunney
    • Matilda Katan
    News & Views
  • The immune system is not immune to sex differences. New research now uncovers the molecular mechanisms that underlie sex-based differences during antiviral immune responses.

    • Alexandros Galaras
    • Mihalis Verykokakis
    News & Views
  • When an interstitial macrophage niche is empty, classical monocytes can proliferate locally in a manner that is restricted by the transcription factor MAFB, before undergoing differentiation into distinct macrophage subsets. These findings reveal a new function of monocytes and highlight the complex regulation of proliferation and differentiation during macrophage development.

    Research Briefing
  • APLAID is a rare autoinflammatory disorder driven by mutations in PLCG2. Here the authors provide a new mouse model using the human APLAID p.Ser707Tyr mutation. The mouse recapitulates clinical features of APLAID that can be prevented by anti-G-CSF. Individuals with APLAID were also shown to have high circulating levels of G-CSF suggesting this might be a suitable target for the clinic.

    • Elisabeth Mulazzani
    • Klara Kong
    • Seth L. Masters
    Article Open Access
  • Capturing cell organization in the tumor microenvironment using spatial proteomics can provide insight into the disease. A pair of studies applying this to advanced lung and brain tumors identifies organizational immune hallmarks that are associated with patient outcomes.

    • Hadeesha Piyadasa
    • Michael Angelo
    • Sean C. Bendall
    News & Views
  • Antibody dynamics resulting from sequential immunization are complex, limiting the study of concepts such as ‘original antigenic sin’. Here, molecular fate-mapping defines an ‘addiction’ of boosted antibodies to primary clones, and OAS-like suppression of new clones, to a degree inversely related to boosting antigenic distance.

    • Joshua J. C. McGrath
    • Patrick C. Wilson
    News & Views
  • Taking advantage of intersectional genetics, Valente et al. report a novel strategy for tracking plasmacytoid dendritic cells (DCs) that enables their discrimination from conventional DCs and plasmacytoid DC–like cells, as well as transitional DCs.

    • Roxane Tussiwand
    News & Views
  • NK cells require an immunological synapse to kill cancer cells and these synapses have been shown to have membranous protrusions. Here the authors use cutting-edge imaging and other techniques to show that tumor serine metabolism results in a reduction in NK cell sphingomyelin content and a lack of these membranous protrusions, which could contribute to a failure to kill cancer cells.

    • Xiaohu Zheng
    • Zhuanghao Hou
    • Haiming Wei
  • Singer and colleagues show that the developmental fate of autoreactive CD4+ thymocytes is determined by the timing and duration of agonist signaling. Early agonist signaling induces clonal deletion, whereas late agonist signaling induces differentiation into Foxp3+ Treg cells or IL-2+ Teff cells depending on whether TGF-β disrupts TCR signaling.

    • Xuguang Tai
    • Alyssa Indart
    • Alfred Singer
    Article Open Access
  • Hidalgo and colleagues discuss general functional features of the neutrophil compartment that may be relevant in physiological scenarios such as specialization in naïve tissues, diversification and functional bias in inflammatory sites.

    • Miguel Palomino-Segura
    • Jon Sicilia
    • Andrés Hidalgo
  • The NLRP10 protein is found to form an inflammasome complex in response to mitochondrial damage. Loss of NLRP10 from colonic epithelia promotes inflammatory bowel disease in a mouse model, while a variant predisposing to atopic dermatitis also shows loss of function.

    • Seth L. Masters
    News & Views
  • NLRP10 has been considered as an inflammasome inhibitor. Here the authors show that upon mitochondrial rupture, NLRP10 assembles a canonical inflammasome and is highly expressed in differentiated keratinocytes, possibly supporting skin homeostasis.

    • Tomasz Próchnicki
    • Matilde B. Vasconcelos
    • Eicke Latz