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IMMUNOLOGY NOTES AND RESOURCES
Unraveling Links between Chronic Inflammation and Long COVID: Workshop Report
BRIEF REVIEWS
Going Full TeRM: The Seminal Role of Tissue-Resident Macrophages in Organ Remodeling during Pregnancy and Lactation
CUTTING EDGE
Cutting Edge: Characterization of Low Copy Number Human Angiotensin-Converting Enzyme 2–Transgenic Mice as an Improved Model of SARS-CoV-2 Infection
SARS-CoV-2–induced mortality in K18-hACE2 mice is dependent on transgene dose.
Low hACE2 copy number mice exhibit reduced viral replication in the lung and brain.
One-copy hACE2 transgenic mice are an improved model of SARS-CoV-2 infection.
CLINICAL AND HUMAN IMMUNOLOGY
Cross-Reactivity of Antibodies to Rituximab with Other Therapeutic Anti-CD20 Antibodies
Anti-rituximab Abs may cross-react to ocrelizumab, not to obinutuzumab or ofatumumab.
Obinutuzumab or ofatumumab is a safe alternative in case of Abs to rituximab.
IMMUNE SYSTEM DEVELOPMENT
The Cyclin D3 Protein Enforces Monogenic TCRβ Expression by Mediating TCRβ Protein–Signaled Feedback Inhibition of Vβ Recombination
Augmenting Vβ rearrangement facilitates analysis of biallelic Tcrb gene assembly.
Cyclin D3 mediates TCRβ protein–signaled feedback inhibition of Vβ recombination.
Alternatively Spliced Variants of Murine CD247 Influence T Cell Development and Activation, Revealing the Importance of the CD3ζ C-Terminal Region
Alternatively spliced variants of CD3ζ affect T cell development and activation.
CD3ι-expressing T cells develop and activate normally, similar to cells expressing CD3ζ.
Mice reconstituted with CD3θ or CD3η have severe thymic defects.
IMMUNOTHERAPY AND VACCINES
Vaccine Molecule Design Based on Phage Display and Computational Modeling against Rhabdovirus
Ab-7 obtained by phage display library plays a favorable antiviral role.
Antigenic epitope ESQEFTTLTSH is pivotal in Ag–Ab binding.
Peptide vaccine KLH-G210–20 induces a strong and specific immune response.
INFECTIOUS DISEASE AND HOST RESPONSE
Defining Parameters That Modulate Susceptibility and Protection to Respiratory Murine Coronavirus MHV1 Infection
Asymptomatic MHV-1 dose provides protection to high-dose MHV-1 rechallenge.
Neutralizing Abs provide protection to high-dose viral challenge.
Sepsis, as a comorbidity, increases susceptibility to MHV-1 infection.
Antiviral and Anti-Inflammatory Therapeutic Effect of RAGE-Ig Protein against Multiple SARS-CoV-2 Variants of Concern Demonstrated in K18-hACE2 Mouse and Syrian Golden Hamster Models
Preclinical trial testing efficacy of RAGE-Ig for COVID-19 in mouse and hamster is reported.
Antiviral and anti-inflammatory therapeutic effects of RAGE-Ig were found for COVID-19.
Effector-Phase IL-2 Signals Drive Th1 Effector and Memory Responses Dependently and Independently of TCF-1
IL-2 sustains Th1 responses in the later stages of the antiviral response.
Differential exposure to IL-2 shapes the memory T cell compartment.
IL-2 is required to sustain Th1 responses even in the absence of TCF-1.
Inherently Reduced Expression of ASC Restricts Caspase-1 Processing in Hepatocytes and Promotes Plasmodium Infection
Incomplete caspase-1 processing in hepatocytes is due to lower expression of ASC.
Enhancing ASC expression resulted in complete caspase-1 processing in hepatocytes.
This led to increased pyroptotic death in hepatocytes and better control of malaria.
Schistosome Infection Impacts Hematopoiesis
Schistosome infection impairs bone marrow HSC function after serial transplantation.
Infection blocks marrow erythropoiesis and increases spleen erythropoiesis.
Hematopoietic activity is increased in the livers of infected mice.
Memory-like NK Cells Are a Critical Component of Vaccine-Induced Immunity to Trypanosoma cruzi Infection
Immunization with the GFP-DDDHA strain protects against secondary infection.
NK cells expand and develop a memory subset during immunization.
Memory NK cells rapidly proliferate and are highly cytotoxic in the recall response.
Recruitment and Maintenance of CX3CR1+CD4+ T Cells during Helminth Infection
CD4 T cells express CX3CR1 at the site of inflammation during helminth infection.
CD4 T cells that maintain CX3CR1 expression persist in the peripheral tissue.
CD4 T cells that express CX3CR1 are a transcriptionally heterogeneous population.
INNATE IMMUNITY AND INFLAMMATION
CL-K1 Promotes Complement Activation and Regulates Opsonophagocytosis of Macrophages with CD93 Interaction in a Primitive Vertebrate
OnCL-K1 significantly reduced the proliferation of pathogens.
OnCL-K1 associated with OnMASPs to initiate the lectin complement pathway.
OnCL-K1 promoted phagocytosis and killing of macrophages with OnCD93 interaction.
The Implant-Induced Foreign Body Response Is Limited by CD13-Dependent Regulation of Ubiquitination of Fusogenic Proteins
CD13 is a negative regulator of macrophage fusion and giant cell formation.
Implant-induced FBGC formation and implant site fibrosis are increased in CD13KO mice.
CD13 controls fusogen expression and actin protrusion to regulate fusion.
CHTOP Promotes Microglia-Mediated Inflammation by Regulating Cell Metabolism and Inflammatory Gene Expression
LPS stimulation induces CHTOP expression in microglia.
CHTOP regulates the expression of cell metabolism and inflammation-related genes.
Knockdown of CHTOP in microglia increased neuronal viability.
MOLECULAR AND STRUCTURAL IMMUNOLOGY
Inhibition of the C1s Protease and the Classical Complement Pathway by 6-(4-Phenylpiperazin-1-yl)Pyridine-3-Carboximidamide and Chemical Analogs
A1 was identified as a candidate C1s binder through an artificial intelligence–based virtual screen.
A1 inhibits C1s dose-dependently with low micromolar potency in functional assays.
Structure of C1s inhibited by A1 suggests strategies for next-generation A1 analogs.
MUCOSAL IMMUNOLOGY
A Lipopolysaccharide-Enriched Cow’s Milk Allergy Microbiome Promotes a TLR4-Dependent Proinflammatory Intestinal Immune Response
The CMA-associated microbiota is enriched for LPS+ bacteria.
The CMA microbiota is associated with intestinal inflammation.
Proinflammatory responses in CMA-colonized mice depend on TLR4 in CD11c+ APCs.
TRANSPLANTATION
IFN-β Pretreatment Alleviates Allogeneic Renal Tubular Epithelial Cell–Induced NK Cell Responses via the IRF7/HLA-E/NKG2A Axis
IFN-β upregulates HLA-E and PD-L1 expression through the JAK/STAT/IRF7 pathway.
IFN-β–induced HLA-E protects HK-2 cells from allogeneic NK cell attack.
BDMC enhances IFN-β–induced HLA-E and PD-L1 expression in vitro and in vivo.
TUMOR IMMUNOLOGY
Glycolysis Induced by METTL14 Is Essential for Macrophage Phagocytosis and Phenotype in Cervical Cancer
The abnormal expression of METTL14 is related to glycolysis of tumor cells.
PD-1 expression in M2 macrophages is negatively correlated with phagocytosis.
Tumorous glycolysis might be the potential mechanism for the function of macrophages.
Histone Deacetylase Inhibitors Directly Modulate T Cell Gene Expression and Signaling and Promote Development of Effector-Exhausted T Cells in Murine Tumors
HDACis directly promote expression of activation-associated genes in T cells.
In the TME, HDACis promote both T cell activation and exhaustion.
HDACis mediate expansion of immunosuppressive myeloid populations.
CORRECTIONS
Correction: A2B Adenosine Receptor Expression by Myeloid Cells is Proinflammatory in Murine Allergic-Airway Inflammation
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Cover Image
Cover Image
On the cover: Functional characterization of CL-K1 as a crucial modulator in innate immunity. Mu. L., X. Yin, L. Qiu, J. Li, J. Mo, H. Bai, Q. Zeng, and J. Ye. 2024. CL-K1 promotes complement activation and regulates opsonophagocytosis of macrophages with CD93 interaction in a primitive vertebrate. J. Immunol. 212: 645–662.
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