Featured
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Article
| Open AccessCytomegalovirus drives Vδ1+ γδ T cell expansion and clonality in common variable immunodeficiency
Common variable immunodeficiency (CVID) is an inborn error of immunity, characterized clinically by low immunoglobulin levels, poor vaccine responses and recurrent sinopulmonary infections. Here authors show that the proportion of Vδ1+ γδ T cells in CVID is higher than in healthy controls and these cells respond to persistent cytomegalovirus viremia with expansion and phenotypic alterations.
- Samantha Chan
- , Benjamin Morgan
- & Lauren J. Howson
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Article
| Open AccessDesigning meaningful continuous representations of T cell receptor sequences with deep generative models
Relating T cell receptor (TCR) sequencing to antigen specificity is a challenge especially when TCR specificity is unclear. Here the authors use a low dimensional generative approach to model TCR sequence similarity and to associate TCR sequences with the same specificity.
- Allen Y. Leary
- , Darius Scott
- & Peter G. Hawkins
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Article
| Open AccessPremature skewing of T cell receptor clonality and delayed memory expansion in HIV-exposed infants
Here, Dzanibe et al show that in utero HIV/ARV exposure sequentially disrupts infant immunologic trajectories, beginning with NK cells that predict vaccine antibody responses and followed by delayed T cell memory maturation linked to skewed TCR clonality.
- Sonwabile Dzanibe
- , Aaron J. Wilk
- & Clive M. Gray
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Article
| Open AccessPD-1/CD80+ small extracellular vesicles from immunocytes induce cold tumours featured with enhanced adaptive immunosuppression
Immune checkpoint inhibition is a successful form of immune therapy; however response rates vary widely among individual patients. Here authors show that circulating small extracellular vesicles might contribute to poor response to anti-PD-1 treatment by carrying PD-1 and CD80 which results in higher level of vesicular PD-L1 expression in the circulation at the expense of expression on tumour cell membranes, causing immunosuppression.
- Lin-Zhou Zhang
- , Jie-Gang Yang
- & Gang Chen
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Article
| Open AccessCD8+ T-cell responses towards conserved influenza B virus epitopes across anatomical sites and age
Influenza B viruses are linked to significant morbidity and mortality, and yet their immunobiology is comparatively poorly understood. Here Menon et al identify influenza B virus-specific CD8+ T cell epitopes and characterise these in adults, children and the elderly.
- Tejas Menon
- , Patricia T. Illing
- & Katherine Kedzierska
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Article
| Open AccessCAR affinity modulates the sensitivity of CAR-T cells to PD-1/PD-L1-mediated inhibition
It has been suggested that targeting the PD-1/PD-L1 axis can increase the anti-tumor properties of chimeric antigen receptor (CAR)-T cells. Here the authors report that CAR affinity modulates the sensitivity of CAR-T cells to PD-1/PD-L1-mediated inhibition.
- Irene Andreu-Saumell
- , Alba Rodriguez-Garcia
- & Sonia Guedan
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Article
| Open AccessDeep learning predictions of TCR-epitope interactions reveal epitope-specific chains in dual alpha T cells
Prediction of the specificity of a T cell receptor from amino acid sequence has been performed using different methods and approaches. Here the authors use TCRab sequences with known specificity to develop a deep learning TCR-epitope interaction predictor and use this method to predict specificity of dual alpha chain TCRs and TCRs specific for different antigens.
- Giancarlo Croce
- , Sara Bobisse
- & David Gfeller
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Article
| Open AccessSemaphorin 3A causes immune suppression by inducing cytoskeletal paralysis in tumour-specific CD8+ T cells
Interactions between Semaphorin-3A (SEMA3A) and Neuropilin-1 (NRP1) and Plexin-A1 and Plexin-A4 have been shown to affect T cell development. Here the authors investigate how these interactions affect CD8+ T cells in tumour immunity, showing that NRP-1, Plexin-A1 and Plexin-A4 are upregulated on T cells allowing tumour derived SEMA3A to inhibit CD8+ T cell migration and function.
- Mike B. Barnkob
- , Yale S. Michaels
- & Vincenzo Cerundolo
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Article
| Open AccessVaccination impairs de novo immune response to omicron breakthrough infection, a precondition for the original antigenic sin
Immune imprinting can affect the response to future infection with pathogen variants. Here, Pušnik et. al. demonstrate that previous vaccination with wild-type SARS-CoV-2 vaccine hampers the formation of an immune response to mutated regions of omicron surface proteins following omicron breakthrough infection.
- Jernej Pušnik
- , Jasmin Zorn
- & Hendrik Streeck
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Article
| Open AccessSARS-CoV-2-specific cellular and humoral immunity after bivalent BA.4/5 COVID-19-vaccination in previously infected and non-infected individuals
Prior infection or exposure to SARS-CoV-2 may influence immunogenicity and effectiveness of subsequent vaccination to new strains of virus. Here the authors show that immunogenicity of a BA.4/5 mRNA vaccine differed in recipients depending on whether they had been exposed to or infected with an earlier strain of virus.
- Rebecca Urschel
- , Saskia Bronder
- & Martina Sester
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Article
| Open AccessDevelopmental self-reactivity determines pathogenic Tc17 differentiation potential of naive CD8+ T cells in murine models of inflammation
The heterogeneity in naive CD8+ T cells is essential for diverse immune responses. Here the authors show that variations in developmental self-reactivity of CD8+ T cells influence their differentiation into Tc17 cells in inflammatory conditions.
- Gil-Woo Lee
- , Young Ju Kim
- & Jae-Ho Cho
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Article
| Open AccessImmunosenescence and vaccine efficacy revealed by immunometabolic analysis of SARS-CoV-2-specific cells in multiple sclerosis patients
SARS-CoV-2 immune responses after vaccination in individuals with multiple sclerosis (MS) remain poorly understood. Here, using mass cytometry, the authors demonstrate that, following three doses of mRNA vaccine, patients with MS have distinct metabolic profiles in antigen-specific B and T cells.
- Sara De Biasi
- , Domenico Lo Tartaro
- & Andrea Cossarizza
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Article
| Open AccessAutophagy-enhancing ATG16L1 polymorphism is associated with improved clinical outcome and T-cell immunity in chronic HIV-1 infection
T cell dysregulation is a hallmark of chronic HIV-1 infection that is partially restored by antiretroviral therapy. Here the authors show that ATG16L1 rs6861 polymorphism is associated clinically with prolonged control of disease pathogenesis, and functionally with enhanced autophagy and T-cell immunity in chronically HIV-1 infected individuals.
- Renée R. C. E. Schreurs
- , Athanasios Koulis
- & Carla M. S. Ribeiro
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Article
| Open AccessIKK2 controls the inflammatory potential of tissue-resident regulatory T cells in a murine gain of function model
Loss of function mutation studies has provided insights into regulatory T-cell biology. Here Cardinez et al explore the effects of a murine Ikbkb (IKK2) gain of function model and show IKK2 activity results in the expansion of regulatory T cells with partial effector function and suggest an IKK2 dose-dependent relation between psoriatic immunopathology and psoriatic arthritis.
- Chelisa Cardinez
- , Yuwei Hao
- & Matthew C. Cook
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Article
| Open AccessPrior infection with unrelated neurotropic virus exacerbates influenza disease and impairs lung T cell responses
Co-infections are much less studied than single pathogen infections. Here, the authors show that co-infection with two unrelated viruses, neurotropic Semliki Forest virus and influenza A virus, exacerbates influenza-related lung pathology and prolongs lung virus replication in a mouse model.
- Isabelle Jia-Hui Foo
- , Brendon Y. Chua
- & Lukasz Kedzierski
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Article
| Open AccessRab4A-directed endosome traffic shapes pro-inflammatory mitochondrial metabolism in T cells via mitophagy, CD98 expression, and kynurenine-sensitive mTOR activation
Activation of the mechanistic target of rapamycin (mTOR) is important in the metabolic function of proinflammatory T cells in autoimmunity. Here the authors characterise how Rab4A is involved with CD98 and endosome recycling which subsequently affects mTOR activation, autoimmunity and T cell expansion.
- Nick Huang
- , Thomas Winans
- & Andras Perl
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Article
| Open AccessThe thymocyte-specific RNA-binding protein Arpp21 provides TCR repertoire diversity by binding to the 3’-UTR and promoting Rag1 mRNA expression
Regulation of thymocyte development by RNA-binding proteins is not fully characterized. Here the authors show the RBP ARPP21 interacting with the Rag1 3’-UTR to promote Rag1 expression, TCR rearrangement and an increased diversity of the TCR repertoire and that ARPP21 is down regulated by TCR stimulation.
- Meng Xu
- , Taku Ito-Kureha
- & Vigo Heissmeyer
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Article
| Open AccessMitochondrial metabolism sustains CD8+ T cell migration for an efficient infiltration into solid tumors
The migration of T cells into tumours and how this is regulated by metabolic pathways is not completely understood. Here the authors use human and xenograft mouse models to explore the functional changes in T cells during migration in tumours and how glycolytic and TCA cycle metabolism is involved.
- Luca Simula
- , Mattia Fumagalli
- & Emmanuel Donnadieu
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Article
| Open AccessCD8+ T cell priming that is required for curative intratumorally anchored anti-4-1BB immunotherapy is constrained by Tregs
Antibodies stimulating the T cell co-activator 4-1BB (CD137) do enhance anti-tumour T cell function, but their utility is hampered by on target, off tumor toxicity. Here authors show that anchoring anti-4-1BB to tumours via fusion with the collagen binding protein LAIR diminishes systemic dissemination of the drug, and they demonstrate a curative effect in a triple-combination-therapy that relieves regulatory T cell immunosuppression in a mouse model of cancer.
- Joseph R. Palmeri
- , Brianna M. Lax
- & K. Dane Wittrup
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Article
| Open AccessBTLA contributes to acute-on-chronic liver failure infection and mortality through CD4+ T-cell exhaustion
Acute-on-chronic liver failure (ACLF) is characterized by rapid deterioration of liver function in patients with chronic liver disease. Here, the authors show that BTLA expression in CD4+ T cells is associated with disease severity and inflammation in hepatitis B virus-related ACLF.
- Xueping Yu
- , Feifei Yang
- & Jiming Zhang
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Article
| Open AccessType 1 interferons and Foxo1 down-regulation play a key role in age-related T-cell exhaustion in mice
Although continuous activity of Foxo transcription factors substantially increase the life span of species such as Hydra vulgaris, these proteins have never been implicated in mammalian aging. In this study, the authors demonstrate that, with age, Foxo1 is down-regulated in mouse T lymphocytes and associated with exhaustion.
- Aurélie Durand
- , Nelly Bonilla
- & Bruno Lucas
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Article
| Open AccessCell softness renders cytotoxic T lymphocytes and T leukemic cells resistant to perforin-mediated killing
Cell softness protects cytotoxic T lymphocytes (CTL) from autolysis by own soluble factors such as perforin secreted for killing target cells. Here the authors show that softness can be induced by YAP activation, and that T leukemic cells are more sensitive to YAP inhibition than CTLs, thereby hinting YAP inhibitors as a potential therapy for T leukemia.
- Yabo Zhou
- , Dianheng Wang
- & Bo Huang
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Article
| Open AccessTYK2 signaling promotes the development of autoreactive CD8+ cytotoxic T lymphocytes and type 1 diabetes
TYK2 is a candidate susceptibility gene for type 1 diabetes (T1D) and a beneficial effect has been reported for TYK2 inhibitors for other autoimmune diseases. In this study, the authors generate Tyk2 KO mice on a NOD background and demonstrate that TYK2 signaling drives CD8+ T cell autoreactivity and T1D.
- Keiichiro Mine
- , Seiho Nagafuchi
- & Keizo Anzai
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Article
| Open AccessA hepatic network of dendritic cells mediates CD4 T cell help outside lymphoid organs
Here, English et al. show that after expanding in lymphoid tissues, CD4+ and CD8+ T cells recognising hepatic antigens migrate into specialised vascular liver areas where CD4+ T cells locally license hepatic dendritic cells and further expand CD8+ T cell numbers.
- Kieran English
- , Rain Kwan
- & Patrick Bertolino
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Article
| Open AccessTumor reactive γδ T cells contribute to a complete response to PD-1 blockade in a Merkel cell carcinoma patient
Immune checkpoint blockade cancer therapy has been designed to enable tumor killing by conventional αβ T cells. Here authors show that in a Merkel cell carcinoma patient showing complete response to anti-PD-1 treatment, innate-like γδ T cells that specifically recognize the tumor cells expand, and likely contribute to therapeutic success.
- Scott C. Lien
- , Dalam Ly
- & Pamela S. Ohashi
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Article
| Open AccessEnhancing antibody responses by multivalent antigen display on thymus-independent DNA origami scaffolds
Three-dimensional DNA origami constructs can be used to deliver vaccine antigens in a multi-valent form. Here the authors design a DNA origami system for SARS-CoV-2 proteins and characterize in mice the immune response and protective capacity of generated antibodies, finding that the construct itself is not immunogenic.
- Eike-Christian Wamhoff
- , Larance Ronsard
- & Mark Bathe
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Article
| Open AccessIdentification of differentially recognized T cell epitopes in the spectrum of tuberculosis infection
T cells play critical roles in the immune pathology of tuberculosis. Here the authors perform a proteome-wide screen of T cell antigens and reactivity to mycobacterium tuberculosis at different stages of infection.
- Sudhasini Panda
- , Jeffrey Morgan
- & Cecilia S. Lindestam Arlehamn
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Article
| Open AccessMARS an improved de novo peptide candidate selection method for non-canonical antigen target discovery in cancer
Detection of neoepitopes from tumours is time consuming and requires the integration of genomic and/or RNA sequencing expression data. Here, the authors propose a machine learning method to enable direct identification of additional, tumour-specific sequences using mass spectrometry through integration of de novo peptide sequencing scores, MHC class I binding prediction, and peptide retention time prediction.
- Hanqing Liao
- , Carolina Barra
- & Nicola Ternette
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Article
| Open AccessThe CUL5 E3 ligase complex negatively regulates central signaling pathways in CD8+ T cells
CD8 + T cells are central players in anti-tumour immunity. Here authors identify Cul5, a ubiquitin E3 ligase as an important inhibitor of CD8 + T cell anti-tumour cytotoxicity and persistence via involvement with both T cell receptor and cytokine-regulated central pathways.
- Xiaofeng Liao
- , Wenxue Li
- & Dianqing Wu
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Article
| Open AccessEarly antiretroviral therapy favors post-treatment SIV control associated with the expansion of enhanced memory CD8+ T-cells
HIV remission has been seen in people living with HIV after the cessation of antiretroviral therapy and is termed post treatment control. Here Passaes and colleagues present an SIV model that shows early initiation of antiretroviral therapy after SIV infection is linked to improved post treatment control upon cessation of antiviral therapy and associates with the expansion of an enhanced memory pool of CD8 + T cells‘.
- Caroline Passaes
- , Delphine Desjardins
- & Asier Sáez-Cirión
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Article
| Open AccessProstaglandin E2 controls the metabolic adaptation of T cells to the intestinal microenvironment
CD8+ T cells reprogram their metabolism in response to the gut environment. Upon sensing of PGE2, gut CD8+ T cells reduce their mitochondrial content, an event that ultimately shapes the pool of CD8+ T cells in the intestinal tissue.
- Matteo Villa
- , David E. Sanin
- & Erika L. Pearce
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Article
| Open AccessIdentifying immune signatures of sepsis to increase diagnostic accuracy in very preterm babies
Bacterial infections and sepsis are a major cause of mortality in preterm babies. Here Das and colleagues assess the paediatric immune response to bacterial infection in very preterm babies and identify blood immune markers that could improve accuracy of diagnostics to rule-out sepsis and guide antibiotic treatment.
- A. Das
- , G. Ariyakumar
- & D. L. Gibbons
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Article
| Open AccessPharmaceutical targeting of OTUB2 sensitizes tumors to cytotoxic T cells via degradation of PD-L1
PD-L1 expression on the surface of cancer cells is believed to contribute to tumor immune evasion via triggering the inhibitory T cell co-receptor, PD-1, resulting in decreased T cell cytotoxicity. Here authors show that OTUB2 regulates PD-L1 expression via inhibition of its ubiquitin-mediated degradation, and that OTUB2 inhibition increases T cell cytotoxicity directed against tumors.
- Wenfeng Ren
- , Zilong Xu
- & Ningshao Xia
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Article
| Open AccessIntegrative genotyping of cancer and immune phenotypes by long-read sequencing
Single-cell transcriptomics excel in cell subset classification and can be augmented by suitable genotype information. Here the authors devise a long-read sequencing workflow, termed nanoranger, for detection of molecular barcodes from single-cell cDNA and apply this to clonal tracking of acute myeloid leukemia and identification of complex immune phenotypes.
- Livius Penter
- , Mehdi Borji
- & Catherine J. Wu
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Article
| Open AccessRecently activated CD4 T cells in tuberculosis express OX40 as a target for host-directed immunotherapy
Marking of recently activated T cells may help further our understanding of immunity against Mycobacterium tuberculosis (Mtb). Here the authors use Nur77-GFP reporter mice infected with Mtb and systems data approaches to implicate OX40 as a marker for recently activated, functionally and transcriptome-wise distinct CD4 T cells, and as a potential target for immunotherapy.
- Abigail R. Gress
- , Christine E. Ronayne
- & Tyler D. Bold
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Article
| Open AccessEarly mucosal events promote distinct mucosal and systemic antibody responses to live attenuated influenza vaccine
Nasally delivered live attenuated influenza vaccines (LAIV) have been shown to be effective in vaccine trials yet immune responses are mostly measured in blood. Here the authors report a clinical trial in young adults and measure immune responses in the mucosa and blood to identify compartmentalised responses.
- Ryan S. Thwaites
- , Ashley S. S. Uruchurtu
- & Peter J. M. Openshaw
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Article
| Open AccessCytolytic circumsporozoite-specific memory CD4+ T cell clones are expanded during Plasmodium falciparum infection
It is important to understand why some individuals in endemic regions acquire natural immunity against malaria while others remain susceptible. Here authors show that during episodes of Plasmodium falciparum malaria, circumsporozoite-specific cytolytic memory CD4+ T cells are clonally expanded in patients, and those with clinical immunity demonstrate reduction in the chemotactic and inhibitory receptor expression in ZEB2+ memory CD4+ T cells.
- Raquel Furtado
- , Mahinder Paul
- & Grégoire Lauvau
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Article
| Open AccessStepwise differentiation of follicular helper T cells reveals distinct developmental and functional states
Follicular helper T cells play critical roles in the formation of high affinity antibody responses, but the signals involved in the development of these cells after initial differentiation are poorly understood. Here Podestà, Cavazzoni and colleagues characterise transitionary phases of follicular helper T cell development and how progression through these stages is linked to humoral immunity.
- Manuel A. Podestà
- , Cecilia B. Cavazzoni
- & Peter T. Sage
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Article
| Open AccessMultifaceted immune dysregulation characterizes individuals at-risk for rheumatoid arthritis
The presence of antibodies to citrullinated protein antigens (ACPA) in peripheral blood represents a risk a state that is ‘at-risk’ for subsequent development of rheumatoid arthritis (RA). Here authors compare multiple molecular and immunological parameters in individuals who are ACPA positive without inflammatory arthritis, ACPA negative controls and patients diagnosed with ACPA positive early-stage RA to conclude that complex immunopathological processes are present in an ACPA positive state which may be targeted by future preventive approaches for RA.
- Eddie A. James
- , V. Michael Holers
- & Kevin D. Deane
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Article
| Open Accessc-Myc uses Cul4b to preserve genome integrity and promote antiviral CD8+ T cell immunity
Although T cells proliferate at an exceptionally fast rate following activation, the mechanisms sustaining such fast proliferation remain unclear. Here, the authors demonstrate that c-Myc upregulates the E3 ubiquitin ligase Cul4b to reduce replication stress in CD8+ T cells, allowing massive clonal expansion and viral clearance.
- Asif A. Dar
- , Dale D. Kim
- & Paula M. Oliver
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Article
| Open AccessPeripheral helper-T-cell-derived CXCL13 is a crucial pathogenic factor in idiopathic multicentric Castleman disease
Idiopathic multicentric Castleman disease (CD) is a rare and potentially fatal lymphoproliferative disorder. Authors here establish a mouse xenotransplantation model of the “not otherwise specified” subtype of the disease and show that the chemokine CXCL13 plays a pivotal role in the pathogenesis and likely produced by peripheral helper cells, which expand upon engraftment.
- Takuya Harada
- , Yoshikane Kikushige
- & Kazuyuki Yoshizaki
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Article
| Open AccessMitochondrial dysfunction promotes the transition of precursor to terminally exhausted T cells through HIF-1α-mediated glycolytic reprogramming
Exhaustion is the functional deterioration of T cells following chronic stimulation. Here, Wu et al. show that mitochondrial dysfunction drives T cell exhaustion by inhibiting HIF-1α degradation and transcriptional metabolic reprogramming.
- Hao Wu
- , Xiufeng Zhao
- & Martin Vaeth
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Article
| Open AccessRespiratory mucosal immune memory to SARS-CoV-2 after infection and vaccination
Evidence from animal models suggest a vital role for mucosal vaccination in inducing protection from coronavirus infection. Here the authors examine the B and T cell responses at the lower airways, and contrast humoral and cellular immunity of people after infection and vaccination.
- Elena Mitsi
- , Mariana O. Diniz
- & Daniela M. Ferreira
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Article
| Open AccessImmune synapse formation promotes lipid peroxidation and MHC-I upregulation in licensed dendritic cells for efficient priming of CD8+ T cells
CD4+ T cells have been shown to be important in CD8+ T cell responses through a process of DC:T cell interaction. Here the authors further characterise this DC:T cell interaction and show that after CD4+ T cell help these post-synaptic DCs have increased lipid peroxidation and increased MHC class I proteins associated with increased cross-presentation function.
- Diego Calzada-Fraile
- , Salvador Iborra
- & Francisco Sánchez-Madrid
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Article
| Open AccessSARS-CoV-2 infection establishes a stable and age-independent CD8+ T cell response against a dominant nucleocapsid epitope using restricted T cell receptors
Although SARS-CoV2 epitope characterization has been the focus of extensive research, these efforts have largely focused on the spike protein. Here, the authors demonstrate that CD8+ T cell responses can be directed against a dominant nucleocapsid epitope and rely on a highly focused T cell receptor repertoire.
- Cecily Choy
- , Joseph Chen
- & Nan-Ping Weng
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Article
| Open AccessInterferon-γ couples CD8+ T cell avidity and differentiation during infection
Although IFN-γ is known to regulate T cell function and expansion during virus-specific responses, its impact on T cells with varying avidity for antigen remains unclear. Here, the authors demonstrate that IFN-γ promotes the expansion of low-avidity CD8+ T cells during the effector phase, but favours those with high avidity in the memory pool.
- Lion F. K. Uhl
- , Han Cai
- & Audrey Gerard
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Article
| Open AccessActivation of coagulation and proinflammatory pathways in thrombosis with thrombocytopenia syndrome and following COVID-19 vaccination
Adenovirus-based vaccination for SARS-CoV-2 has a rare chance to cause thrombosis with thrombocytopenia (TTS). Here the authors compare proteomic and transcriptomic data from vaccinated participants with or without TTS to find distinct activations of coagulation and innate immune pathways in patient with TTS, or following initial or boosting vaccination.
- Malika Aid
- , Kathryn E. Stephenson
- & Dan H. Barouch
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Article
| Open AccessThe transcription factor Zeb1 controls homeostasis and function of type 1 conventional dendritic cells
Type 1 conventional dendritic cells (cDC1) play a pivotal role in the cross-presentation of antigens, enabling efficient CD8 + T cell response. Here authors show that the transcription factor Zeb1 essentially regulates this process via facilitating the reactive-oxygen-species-dependent rupture of phagosomal membrane to allow antigen export to the cytoplasm.
- Yan Wang
- , Quan Zhang
- & Nengming Xiao
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Article
| Open AccessTracing immune cells around biomaterials with spatial anchors during large-scale wound regeneration
Skin scarring devoid of dermal appendages has unfavorable effects on aesthetic and physiological functions. Here, the authors present a treatment based on extracellular matrix scaffolds and perform multimodal analysis to highlight the role of Tregs recruited by the biomaterial in mitigating tissue fibrous by suppressing excessive inflammation.
- Yang Yang
- , Chenyu Chu
- & Yili Qu