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  1. Article ; Online: Both naive and memory B cells respond to flu vaccine.

    Rodda, Lauren B / Pepper, Marion

    Nature

    2020  Volume 586, Issue 7827, Page(s) 34–35

    MeSH term(s) B-Lymphocytes ; Germinal Center ; Humans ; Influenza Vaccines ; Influenza, Human ; Vaccination
    Chemical Substances Influenza Vaccines
    Language English
    Publishing date 2020-09-16
    Publishing country England
    Document type News ; Comment
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/d41586-020-02556-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Metabolic constraints on the B cell response to malaria.

    Rodda, Lauren B / Pepper, Marion

    Nature immunology

    2020  Volume 21, Issue 7, Page(s) 722–724

    MeSH term(s) B-Lymphocytes ; Humans ; Immunity, Humoral ; Infections ; Malaria ; Nutrients
    Keywords covid19
    Language English
    Publishing date 2020-06-23
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 2016987-5
    ISSN 1529-2916 ; 1529-2908
    ISSN (online) 1529-2916
    ISSN 1529-2908
    DOI 10.1038/s41590-020-0718-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Diminished responses to mRNA-based SARS-CoV-2 vaccines in individuals with rheumatoid arthritis on immune-modifying therapies.

    Klebanoff, Samuel D / Rodda, Lauren B / Morishima, Chihiro / Wener, Mark H / Yuzefpolskiy, Yevgeniy / Bettelli, Estelle / Buckner, Jane H / Speake, Cate / Pepper, Marion / Campbell, Daniel J

    JCI insight

    2023  Volume 8, Issue 15

    Abstract: Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disorder that causes debilitating swelling and destruction of the joints. People with RA are treated with drugs that actively suppress one or more parts of their immune system, and these may ... ...

    Abstract Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disorder that causes debilitating swelling and destruction of the joints. People with RA are treated with drugs that actively suppress one or more parts of their immune system, and these may alter the response to vaccination against SARS-CoV-2. In this study, we analyzed blood samples from a cohort of patients with RA after receiving a 2-dose mRNA COVID-19 vaccine regimen. Our data show that individuals on the cytotoxic T lymphocyte antigen 4-Ig therapy abatacept had reduced levels of SARS-CoV-2-neutralizing antibodies after vaccination. At the cellular level, these patients showed reduced activation and class switching of SARS-CoV-2-specific B cells, as well as reduced numbers and impaired helper cytokine production by SARS-CoV-2-specific CD4+ T cells. Individuals on methotrexate showed similar but less severe defects in vaccine response, whereas individuals on the B cell-depleting therapy rituximab had a near-total loss of antibody production after vaccination. These data define a specific cellular phenotype associated with impaired response to SARS-CoV-2 vaccination in patients with RA on different immune-modifying therapies and help inform efforts to improve vaccination strategies in this vulnerable population.
    MeSH term(s) Humans ; COVID-19 Vaccines ; COVID-19/prevention & control ; SARS-CoV-2 ; Arthritis, Rheumatoid/drug therapy ; Antibodies, Viral ; RNA, Messenger
    Chemical Substances COVID-19 Vaccines ; Antibodies, Viral ; RNA, Messenger
    Language English
    Publishing date 2023-08-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ISSN 2379-3708
    ISSN (online) 2379-3708
    DOI 10.1172/jci.insight.168663
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Cytotoxic T Cells Targeting Spike Glycoprotein Are Associated with Hybrid Immunity to SARS-CoV-2.

    Phan, Jolie M / Layton, Erik D / Yu, Krystle K Q / Aguilar, Melissa S / Golez, Inah / Franko, Nicholas M / Logue, Jennifer K / Rodda, Lauren B / Howard, Christian A / Pepper, Marion / Gale, Michael / Chu, Helen Y / Seshadri, Chetan

    Journal of immunology (Baltimore, Md. : 1950)

    2023  Volume 210, Issue 9, Page(s) 1236–1246

    Abstract: mRNA vaccination of individuals with prior SARS-CoV-2 infection provides superior protection against breakthrough infections with variants of concern compared with vaccination in the absence of prior infection. However, the immune mechanisms by which ... ...

    Abstract mRNA vaccination of individuals with prior SARS-CoV-2 infection provides superior protection against breakthrough infections with variants of concern compared with vaccination in the absence of prior infection. However, the immune mechanisms by which this hybrid immunity is generated and maintained are unknown. Whereas genetic variation in spike glycoprotein effectively subverts neutralizing Abs, spike-specific T cells are generally maintained against SARS-CoV-2 variants. Thus, we comprehensively profiled human T cell responses against the S1 and S2 domains of spike glycoprotein in a cohort of SARS-CoV-2-naive (n = 13) or -convalescent (n = 17) individuals who received two-dose mRNA vaccine series and were matched by age, sex, and vaccine type. Using flow cytometry, we observed that the overall functional breadth of CD4 T cells and polyfunctional Th1 responses was similar between the two groups. However, polyfunctional cytotoxic CD4 T cell responses against both S1 and S2 domains trended higher among convalescent subjects. Multimodal single-cell RNA sequencing revealed diverse functional programs in spike-specific CD4 and CD8 T cells in both groups. However, convalescent individuals displayed enhanced cytotoxic and antiviral CD8 T cell responses to both S1 and S2 in the absence of cytokine production. Taken together, our data suggest that cytotoxic CD4 and CD8 T cells targeting spike glycoprotein may partially account for hybrid immunity and protection against breakthrough infections with SARS-CoV-2.
    MeSH term(s) Humans ; T-Lymphocytes, Cytotoxic ; SARS-CoV-2 ; Spike Glycoprotein, Coronavirus/genetics ; COVID-19 ; Breakthrough Infections ; RNA, Messenger ; Vaccination ; Adaptive Immunity ; Glycoproteins ; Antibodies, Viral ; Antibodies, Neutralizing
    Chemical Substances spike protein, SARS-CoV-2 ; Spike Glycoprotein, Coronavirus ; RNA, Messenger ; Glycoproteins ; Antibodies, Viral ; Antibodies, Neutralizing
    Language English
    Publishing date 2023-03-24
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.2200815
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: CD97 promotes spleen dendritic cell homeostasis through the mechanosensing of red blood cells.

    Liu, Dan / Duan, Lihui / Rodda, Lauren B / Lu, Erick / Xu, Ying / An, Jinping / Qiu, Longhui / Liu, Fengchun / Looney, Mark R / Yang, Zhiyong / Allen, Christopher D C / Li, Zhongmei / Marson, Alexander / Cyster, Jason G

    Science (New York, N.Y.)

    2022  Volume 375, Issue 6581, Page(s) eabi5965

    Abstract: Dendritic cells (DCs) are crucial for initiating adaptive immune responses. However, the factors that control DC positioning and homeostasis are incompletely understood. We found that type-2 conventional DCs (cDC2s) in the spleen depend on ... ...

    Abstract Dendritic cells (DCs) are crucial for initiating adaptive immune responses. However, the factors that control DC positioning and homeostasis are incompletely understood. We found that type-2 conventional DCs (cDC2s) in the spleen depend on Gα
    MeSH term(s) Actins/metabolism ; Animals ; Antigen Presentation ; Antigens/immunology ; Blood Circulation ; CD55 Antigens/blood ; CD55 Antigens/metabolism ; Cell Movement ; Dendritic Cells/immunology ; Dendritic Cells/physiology ; Erythrocytes/metabolism ; Erythrocytes/physiology ; GTP-Binding Protein alpha Subunits, G12-G13/metabolism ; Homeostasis ; Interferon Regulatory Factors/metabolism ; Ligands ; Mice ; Receptors, G-Protein-Coupled/genetics ; Receptors, G-Protein-Coupled/metabolism ; Signal Transduction ; Spleen/blood supply ; Spleen/cytology ; Spleen/immunology ; Spleen/metabolism ; Transcription, Genetic ; Transcriptome
    Chemical Substances Actins ; Adgre5 protein, mouse ; Antigens ; CD55 Antigens ; Interferon Regulatory Factors ; Ligands ; Receptors, G-Protein-Coupled ; interferon regulatory factor-4 ; GTP-Binding Protein alpha Subunits, G12-G13 (EC 3.6.5.1)
    Language English
    Publishing date 2022-02-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.abi5965
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Imprinted SARS-CoV-2-specific memory lymphocytes define hybrid immunity

    Rodda, Lauren B. / Morawski, Peter A. / Pruner, Kurt B. / Fahning, Mitchell L. / Howard, Christian A. / Franko, Nicholas / Logue, Jennifer / Eggenberger, Julie / Stokes, Caleb / Golez, Inah / Hale, Malika / Gale, Michael / Chu, Helen Y. / Campbell, Daniel J. / Pepper, Marion

    Cell. 2022 Mar. 14,

    2022  

    Abstract: Immune memory is tailored by cues that lymphocytes perceive during priming. The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic created a situation in which nascent memory could be tracked through additional antigen exposures. Both ... ...

    Abstract Immune memory is tailored by cues that lymphocytes perceive during priming. The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic created a situation in which nascent memory could be tracked through additional antigen exposures. Both SARS-CoV-2 infection and vaccination induce multifaceted, functional immune memory, but together they engender improved protection from disease, termed hybrid immunity. We therefore investigated how vaccine-induced memory is shaped by previous infection. We found that following vaccination, previously infected individuals generated more SARS-CoV-2 RBD-specific memory B cells and variant-neutralizing antibodies and a distinct population of IFN-γ and IL-10-expressing memory SARS-CoV-2 spike-specific CD4⁺ T cells than previously naive individuals. While additional vaccination could increase humoral memory in previously naive individuals, it did not recapitulate the distinct CD4⁺ T cell cytokine profile observed in previously infected subjects. Thus, imprinted features of SARS-CoV-2-specific memory lymphocytes define hybrid immunity.
    Keywords Severe acute respiratory syndrome coronavirus 2 ; antigens ; cytokines ; immunologic memory ; memory ; pandemic ; vaccination
    Language English
    Dates of publication 2022-0314
    Publishing place Elsevier Inc.
    Document type Article
    Note Pre-press version
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2022.03.018
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Diminished responses to mRNA-based SARS-CoV-2 vaccines in individuals with rheumatoid arthritis on immune modifying therapies

    Klebanoff, Samuel D / Rodda, Lauren B / Morishima, Chihiro / Wener, Mark H / Fink, Susan L / Bryan, Andrew / Yuzefpolskiy, Yevgeniy / Bettelli, Estelle / Buckner, Jane H / Speake, Cate / Pepper, Marion / Campbell, Daniel J

    medRxiv

    Abstract: Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease that causes debilitating swelling and destruction of the joints. People with RA are treated with drugs that actively suppress one or more parts of their immune system, and these may ... ...

    Abstract Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease that causes debilitating swelling and destruction of the joints. People with RA are treated with drugs that actively suppress one or more parts of their immune system, and these may alter their response to vaccination against SARS-CoV-2. In this study, we analyzed blood samples from a cohort of RA subjects after receiving a 2-dose mRNA COVID-19 vaccine regimen. Our data show that individuals on the CTLA4-Ig therapy abatacept have reduced levels of SARS-CoV-2-neutralizing antibodies after vaccination. At a cellular level, these subjects show reduced activation and class-switching of SARS-CoV-2-specific B cells, as well as reduced numbers and impaired helper cytokine production by SARS-CoV-2-specific CD4<sup>+</sup> T cells. Individuals on methotrexate showed similar but less severe defects in vaccine response, whereas individuals on the B celldepleting therapy rituximab had a near-total loss of antibody production after vaccination. These data define a specific cellular phenotype associated with impaired response to SARS-CoV-2 vaccination in RA subjects on different immune-modifying therapies, and help inform efforts to improve vaccination strategies in this vulnerable population.
    Keywords covid19
    Language English
    Publishing date 2023-01-05
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2023.01.03.23284167
    Database COVID19

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  8. Article ; Online: Imprinted SARS-CoV-2-specific memory lymphocytes define hybrid immunity.

    Rodda, Lauren B / Morawski, Peter A / Pruner, Kurt B / Fahning, Mitchell L / Howard, Christian A / Franko, Nicholas / Logue, Jennifer / Eggenberger, Julie / Stokes, Caleb / Golez, Inah / Hale, Malika / Gale, Michael / Chu, Helen Y / Campbell, Daniel J / Pepper, Marion

    Cell

    2022  Volume 185, Issue 9, Page(s) 1588–1601.e14

    Abstract: Immune memory is tailored by cues that lymphocytes perceive during priming. The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic created a situation in which nascent memory could be tracked through additional antigen exposures. Both ... ...

    Abstract Immune memory is tailored by cues that lymphocytes perceive during priming. The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic created a situation in which nascent memory could be tracked through additional antigen exposures. Both SARS-CoV-2 infection and vaccination induce multifaceted, functional immune memory, but together, they engender improved protection from disease, termed hybrid immunity. We therefore investigated how vaccine-induced memory is shaped by previous infection. We found that following vaccination, previously infected individuals generated more SARS-CoV-2 RBD-specific memory B cells and variant-neutralizing antibodies and a distinct population of IFN-γ and IL-10-expressing memory SARS-CoV-2 spike-specific CD4
    MeSH term(s) Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19/immunology ; COVID-19 Vaccines/immunology ; Humans ; Immunity, Humoral ; SARS-CoV-2 ; Spike Glycoprotein, Coronavirus ; T-Lymphocytes
    Chemical Substances Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19 Vaccines ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2
    Language English
    Publishing date 2022-03-17
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2022.03.018
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Integrin-mediated interactions between B cells and follicular dendritic cells influence germinal center B cell fitness.

    Wang, Xiaoming / Rodda, Lauren B / Bannard, Oliver / Cyster, Jason G

    Journal of immunology (Baltimore, Md. : 1950)

    2014  Volume 192, Issue 10, Page(s) 4601–4609

    Abstract: Integrin-ligand interactions between germinal center (GC) B cells and Ag-presenting follicular dendritic cells (FDCs) have been suggested to play central roles during GC responses, but their in vivo requirement has not been directly tested. In this study, ...

    Abstract Integrin-ligand interactions between germinal center (GC) B cells and Ag-presenting follicular dendritic cells (FDCs) have been suggested to play central roles during GC responses, but their in vivo requirement has not been directly tested. In this study, we show that, whereas integrins αLβ2 and α4β1 are highly expressed and functional on mouse GC B cells, removal of single integrins or their ligands had little effect on B cell participation in the GC response. Combined β2 integrin deficiency and α4 integrin blockade also did not affect the GC response against a particulate Ag. However, the combined integrin deficiency did cause B cells to be outcompeted in splenic GC responses against a soluble protein Ag and in mesenteric lymph node GC responses against gut-derived Ags. Similar findings were made for β2-deficient B cells in mice lacking VCAM1 on FDCs. The reduced fitness of the GC B cells did not appear to be due to decreased Ag acquisition, proliferation rates, or pAKT levels. In summary, our findings provide evidence that αLβ2 and α4β1 play overlapping and context-dependent roles in supporting interactions with FDCs that can augment the fitness of responding GC B cells. We also find that mouse GC B cells upregulate αvβ3 and adhere to vitronectin and milk-fat globule epidermal growth factor VIII protein. Integrin β3-deficient B cells contributed in a slightly exaggerated manner to GC responses, suggesting this integrin has a regulatory function in GC B cells.
    MeSH term(s) Animals ; B-Lymphocytes, Regulatory/cytology ; B-Lymphocytes, Regulatory/immunology ; Cell Adhesion/genetics ; Cell Adhesion/immunology ; Dendritic Cells, Follicular/cytology ; Dendritic Cells, Follicular/immunology ; Germinal Center/cytology ; Germinal Center/immunology ; Integrin alpha4beta1/genetics ; Integrin alpha4beta1/immunology ; Integrin alphaVbeta3/genetics ; Integrin alphaVbeta3/immunology ; Mice ; Mice, Knockout ; Spleen/cytology ; Spleen/immunology ; Up-Regulation/genetics ; Up-Regulation/immunology ; Vitronectin/genetics ; Vitronectin/immunology
    Chemical Substances Integrin alpha4beta1 ; Integrin alphaVbeta3 ; Vitronectin
    Language English
    Publishing date 2014-04-16
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.1400090
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: IgA production requires B cell interaction with subepithelial dendritic cells in Peyer's patches.

    Reboldi, Andrea / Arnon, Tal I / Rodda, Lauren B / Atakilit, Amha / Sheppard, Dean / Cyster, Jason G

    Science (New York, N.Y.)

    2016  Volume 352, Issue 6287, Page(s) aaf4822

    Abstract: Immunoglobulin A (IgA) induction primarily occurs in intestinal Peyer's patches (PPs). However, the cellular interactions necessary for IgA class switching are poorly defined. Here we show that in mice, activated B cells use the chemokine receptor CCR6 ... ...

    Abstract Immunoglobulin A (IgA) induction primarily occurs in intestinal Peyer's patches (PPs). However, the cellular interactions necessary for IgA class switching are poorly defined. Here we show that in mice, activated B cells use the chemokine receptor CCR6 to access the subepithelial dome (SED) of PPs. There, B cells undergo prolonged interactions with SED dendritic cells (DCs). PP IgA class switching requires innate lymphoid cells, which promote lymphotoxin-β receptor (LTβR)-dependent maintenance of DCs. PP DCs augment IgA production by integrin αvβ8-mediated activation of transforming growth factor-β (TGFβ). In mice where B cells cannot access the SED, IgA responses against oral antigen and gut commensals are impaired. These studies establish the PP SED as a niche supporting DC-B cell interactions needed for TGFβ activation and induction of mucosal IgA responses.
    MeSH term(s) Animals ; B-Lymphocytes/immunology ; Cell Communication/immunology ; Cell Movement/immunology ; Dendritic Cells/immunology ; Immunoglobulin A, Secretory/biosynthesis ; Immunoglobulin A, Secretory/genetics ; Immunoglobulin Class Switching ; Integrins/immunology ; Intestinal Mucosa/immunology ; Lymphocyte Activation ; Lymphotoxin beta Receptor/genetics ; Lymphotoxin beta Receptor/immunology ; Mice ; Mice, Mutant Strains ; Peyer's Patches/immunology ; Receptors, CCR6/genetics ; Receptors, CCR6/immunology
    Chemical Substances CCR6 protein, mouse ; Immunoglobulin A, Secretory ; Integrins ; Lymphotoxin beta Receptor ; Receptors, CCR6 ; integrin alphavbeta8
    Language English
    Publishing date 2016-05-12
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.aaf4822
    Database MEDical Literature Analysis and Retrieval System OnLINE

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