Issues
TOP READS
BRIEF REVIEWS
CD13/Aminopeptidase N Is a Potential Therapeutic Target for Inflammatory Disorders
ANTIGEN RECOGNITION AND RESPONSES
AID Phosphorylation Regulates Mismatch Repair–Dependent Class Switch Recombination and Affinity Maturation
No CSR or affinity maturation was observed in AIDS38A/S38AMSH2−/− and AIDS38A/S38AUNG−/− mice.
AID phosphorylated at serine 38 regulates BER- and MMR-dependent CSR and SHM.
IMMUNE REGULATION
Foliate Lymphoid Aggregates as Novel Forms of Serous Lymphocyte Entry Sites of Peritoneal B Cells and High-Grade B Cell Lymphomas
The mesentery and omentum in mice contain various forms of lymphoid tissues.
FLAgs represent a partially compartmentalized form of lymphoid aggregate.
FLAgs efficiently bind B cells and high-grade B cell lymphoma.
Th1 Cells Rolling on Selectins Trigger DAP12-Dependent Signals That Activate Integrin αLβ2
Th1 cells rolling on selectins trigger DAP12-dependent activation of integrin αLβ2.
DAP12 signaling in Th1 cells facilitates slow rolling, arrest, and migration.
IMMUNE SYSTEM DEVELOPMENT
DOCK2 Sets the Threshold for Entry into the Virtual Memory CD8+ T Cell Compartment by Negatively Regulating Tonic TCR Triggering
DOCK2-deficient CD8+ T cells spontaneously convert into virtual memory cells.
Dock2−/− CD8+ T cells exhibit enhanced responsiveness to weak agonists.
The Tetraspanin CD53 Regulates Early B Cell Development by Promoting IL-7R Signaling
The tetraspanin CD53 is required for normal B cell development.
CD53 promotes B cell development by maintaining IL-7R signaling.
CD53 functions cell autonomously during B lymphopoiesis.
Extremely Preterm Infants Have Significant Alterations in Their Conventional T Cell Compartment during the First Weeks of Life
ELGAN/ELBW neonates are lymphopenic and their T cells have altered homing capacity.
ELGAN/ELBW infants with chorioamnionitis have an altered Treg population.
Two Successive Inversional Vβ Rearrangements on a Single Tcrb Allele Can Contribute to the TCRβ Repertoire
Two successive inversional V-to-DJ rearrangements can occur on one Tcrb allele.
Both Vβ usage and Vβ selection are abnormal for inversional rearrangements.
IMMUNOTHERAPY AND VACCINES
Splenic Red Pulp Macrophages Cross-Prime Early Effector CTL That Provide Rapid Defense against Viral Infections
RPM and BM-DCs, not cDC1, cross-prime CTL via the MR-dependent cytosolic pathway.
RPM and cDC1 cross-prime at different phases after infection/immunization.
RPM produce distinct early effector CTL that limit early viral spread.
INFECTIOUS DISEASE AND HOST RESPONSE
Pneumolysin Induces 12-Lipoxygenase–Dependent Neutrophil Migration during Streptococcus pneumoniae Infection
PLY induces PMN migration across pulmonary epithelial cells.
PLY-dependent PMN migration requires pore formation and epithelial 12-LOX activity.
Diverse pore-forming toxins induce PMN migration.
Stochastic Expansions Maintain the Clonal Stability of CD8+ T Cell Populations Undergoing Memory Inflation Driven by Murine Cytomegalovirus
Clonal stability is a feature of memory inflation.
Stochastic expansions maintain clonal stability during memory inflation.
Persistent clonotypes are often public in the context of memory inflation.
Platelets Modulate IFN-γ Production against Candida albicans in Peripheral Blood Mononuclear Cells via Prostaglandins
Platelets modulate IFN-γ production by PBMCs in response to C. albicans.
The effect required direct contact between platelets and monocytes.
Platelet modulation of the Th1 response was dependent on PGE2.
INNATE IMMUNITY AND INFLAMMATION
Semaphorin 3E Regulates the Response of Macrophages to Lipopolysaccharide-Induced Systemic Inflammation
Mice deficient in Sema3E are more resistant to LPS-induced acute inflammation.
Sema3E regulates macrophage phenotype and function in response to LPS.
Diacylglycerol Kinase ζ Regulates Macrophage Responses in Juvenile Arthritis and Cytokine Storm Syndrome Mouse Models
Dgkζ deficiency protects from the induction of inflammatory arthritis.
Dgkζ deficiency limits activation of proinflammatory macrophages.
Dgkζ deficiency reduces phosphorylation of STAT1 and STAT3 in activated macrophages.
MOLECULAR AND STRUCTURAL IMMUNOLOGY
A Glimpse of the Peptide Profile Presentation by Xenopus laevis MHC Class I: Crystal Structure of pXela-UAA Reveals a Distinct Peptide-Binding Groove
pXela-UAAg is the first structure of an amphibian classical MHC-I molecule.
The A pocket is the largest and the C–F pockets are positively charged in pXela-UAAg.
The AB loop of pXela-UAAg reveals a unique shape for binding β2m in nonmammals.
MUCOSAL IMMUNOLOGY
Upregulation of H3K27 Demethylase KDM6 During Respiratory Syncytial Virus Infection Enhances Proinflammatory Responses and Immunopathology
KDM6 demethylases are upregulated in inflammatory DC following RSV infection.
KDM6 during RSV infection alters APC function of DC.
KDM6 increases proinflammatory responses and RSV-driven immunopathology.
IL-17 Promotes Pseudomonas aeruginosa Keratitis in C57BL/6 Mouse Corneas
IL-23/17/17R signaling is upregulated in P. aeruginosa keratitis.
IL-17 suppresses TH2 response, upregulates osteoprotegerin, and worsens keratitis.
IL-17 could be a therapeutic target for treating P. aeruginosa keratitis.
SYSTEMS IMMUNOLOGY
Activation of TCR Vδ1+ and Vδ1−Vδ2− γδ T Cells upon Controlled Infection with Plasmodium falciparum in Tanzanian Volunteers
Frequencies of CD38+PD-1+ TCR Vδ1 and Vδx cells increase after malaria infection.
CD38+PD1+ TCR Vδ1 cells are oligoclonal, as shown by single-cell CDR3δ analysis.
TCR Vδ1 cells show long-term phenotypic alterations after blood-stage parasitemia.
TUMOR IMMUNOLOGY
Patrolling Monocytes Control NK Cell Expression of Activating and Stimulatory Receptors to Curtail Lung Metastases
NK cell functioning is impaired in E2-deficient (E2−/−) mice.
E2−/− mice exhibit increased melanoma metastatic burden in lungs.
E2−/− NK cells display reduced Ly49D and increased NKG2A/CD94 expression.
Pembrolizumab Interferes with the Differentiation of Human FOXP3+–Induced T Regulatory Cells, but Not with FOXP3 Stability, through Activation of mTOR
Pembrolizumab reduces the differentiation of human FOXP3+ iTregs.
FOXP3 downregulation by pembrolizumab was mediated by activation of mTOR.
PD-1 blockade shifts iTreg polarization in favor of Th1 and Th17 subsets.
Tumor Microenvironment following Gemcitabine Treatment Favors Differentiation of Immunosuppressive Ly6Chigh Myeloid Cells
Hyperexpression of GM-CSF in tumor cells promotes M-MDSC immunosuppression.
Efferocytosis enhances immunosuppression of Ly6Chigh myeloid cells.
Chemoresistance decreases the sensitivity to CTL-induced cytotoxicity.
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Cover Image
Cover Image
On the cover: The repertoire of virtual memory CD8+ T cells from a C57BL/6J mouse is depicted as colored hexagons, whose size and color are scaled by their clonal abundance. DOCK2 deficiency lowers the threshold for the entry of naive CD8+ T cells into the virtual memory compartment. Mahajan, V. S., E. Demissie, F. Alsufyani, S. Kumari, G. J. Yuen, V. Viswanadham, A. Huang, J. Q. Tran, J. J. Moon, D. J. Irvine, and S. Pillai. 2020. DOCK2 sets the threshold for entry into the virtual memory CD8+ T cell compartment by negatively regulating tonic TCR triggering. J. Immunol. 204: 49–57.
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