LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 22

Search options

  1. Article ; Online: The Pathogenesis, Molecular Mechanisms, and Therapeutic Potential of the Interferon Pathway in Systemic Lupus Erythematosus and Other Autoimmune Diseases.

    Ramaswamy, Madhu / Tummala, Raj / Streicher, Katie / Nogueira da Costa, Andre / Brohawn, Philip Z

    International journal of molecular sciences

    2021  Volume 22, Issue 20

    Abstract: Therapeutic success in treating patients with systemic lupus erythematosus (SLE) is limited by the multivariate disease etiology, multi-organ presentation, systemic involvement, and complex immunopathogenesis. Agents targeting B-cell differentiation and ... ...

    Abstract Therapeutic success in treating patients with systemic lupus erythematosus (SLE) is limited by the multivariate disease etiology, multi-organ presentation, systemic involvement, and complex immunopathogenesis. Agents targeting B-cell differentiation and survival are not efficacious for all patients, indicating a need to target other inflammatory mediators. One such target is the type I interferon pathway. Type I interferons upregulate interferon gene signatures and mediate critical antiviral responses. Dysregulated type I interferon signaling is detectable in many patients with SLE and other autoimmune diseases, and the extent of this dysregulation is associated with disease severity, making type I interferons therapeutically tangible targets. The recent approval of the type I interferon-blocking antibody, anifrolumab, by the US Food and Drug Administration for the treatment of patients with SLE demonstrates the value of targeting this pathway. Nevertheless, the interferon pathway has pleiotropic biology, with multiple cellular targets and signaling components that are incompletely understood. Deconvoluting the complexity of the type I interferon pathway and its intersection with lupus disease pathology will be valuable for further development of targeted SLE therapeutics. This review summarizes the immune mediators of the interferon pathway, its association with disease pathogenesis, and therapeutic modalities targeting the dysregulated interferon pathway.
    MeSH term(s) Animals ; Antiviral Agents/pharmacology ; Autoimmune Diseases/drug therapy ; Autoimmune Diseases/pathology ; Humans ; Immunity, Innate/drug effects ; Interferon Type I/pharmacology ; Lupus Erythematosus, Systemic/drug therapy ; Lupus Erythematosus, Systemic/pathology ; Signal Transduction
    Chemical Substances Antiviral Agents ; Interferon Type I
    Language English
    Publishing date 2021-10-19
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms222011286
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Type I interferon blockade with anifrolumab in patients with systemic lupus erythematosus modulates key immunopathological pathways in a gene expression and proteomic analysis of two phase 3 trials.

    Baker, Tina / Sharifian, Hoda / Newcombe, Paul J / Gavin, Patrick G / Lazarus, Mark N / Ramaswamy, Madhu / White, Wendy I / Ferrari, Nicola / Muthas, Daniel / Tummala, Raj / Morand, Eric F / Furie, Richard / Vital, Edward M / Chamberlain, Chris / Platt, Adam / Al-Mossawi, Hussein / Brohawn, Philip Z / Csomor, Eszter

    Annals of the rheumatic diseases

    2024  

    Abstract: Introduction: Anifrolumab is a type I interferon (IFN) receptor 1 (IFNAR1) blocking antibody approved for treating patients with systemic lupus erythematosus (SLE). Here, we investigated the immunomodulatory mechanisms of anifrolumab using longitudinal ... ...

    Abstract Introduction: Anifrolumab is a type I interferon (IFN) receptor 1 (IFNAR1) blocking antibody approved for treating patients with systemic lupus erythematosus (SLE). Here, we investigated the immunomodulatory mechanisms of anifrolumab using longitudinal transcriptomic and proteomic analyses of the 52-week, randomised, phase 3 TULIP-1 and TULIP-2 trials.
    Methods: Patients with moderate to severe SLE were enrolled in TULIP-1 and TULIP-2 and received intravenous anifrolumab or placebo alongside standard therapy. Whole-blood expression of 18 017 genes using genome-wide RNA sequencing (RNA-seq) (pooled TULIP; anifrolumab, n=244; placebo, n=258) and 184 plasma proteins using Olink and Simoa panels (TULIP-1; anifrolumab, n=124; placebo, n=132) were analysed. We compared treatment groups via gene set enrichment analysis using MetaBase pathway analysis, blood transcriptome modules, in silico deconvolution of RNA-seq and longitudinal linear mixed effect models for gene counts and protein levels.
    Results: Compared with placebo, anifrolumab modulated >2000 genes by week 24, with overlapping results at week 52 and 41 proteins by week 52. IFNAR1 blockade with anifrolumab downregulated multiple type I and II IFN-induced gene modules/pathways and type III IFN-λ protein levels, and impacted apoptosis-associated and neutrophil extracellular trap-associated transcriptional pathways, innate cell activating chemokines and receptors, proinflammatory cytokines and B-cell activating cytokines. In silico deconvolution of RNA-seq data indicated an increase from baseline of mucosal-associated invariant and γδT cells and a decrease of monocytes following anifrolumab treatment.
    Discussion: Type I IFN blockade with anifrolumab modulated multiple inflammatory pathways downstream of type I IFN signalling, including apoptotic, innate and adaptive mechanisms that play key roles in SLE immunopathogenesis.
    Language English
    Publishing date 2024-04-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 7090-7
    ISSN 1468-2060 ; 0003-4967
    ISSN (online) 1468-2060
    ISSN 0003-4967
    DOI 10.1136/ard-2023-225445
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: The Pathogenesis, Molecular Mechanisms, and Therapeutic Potential of the Interferon Pathway in Systemic Lupus Erythematosus and Other Autoimmune Diseases

    Madhu Ramaswamy / Raj Tummala / Katie Streicher / Andre Nogueira da Costa / Philip Z. Brohawn

    International Journal of Molecular Sciences, Vol 22, Iss 11286, p

    2021  Volume 11286

    Abstract: Therapeutic success in treating patients with systemic lupus erythematosus (SLE) is limited by the multivariate disease etiology, multi-organ presentation, systemic involvement, and complex immunopathogenesis. Agents targeting B-cell differentiation and ... ...

    Abstract Therapeutic success in treating patients with systemic lupus erythematosus (SLE) is limited by the multivariate disease etiology, multi-organ presentation, systemic involvement, and complex immunopathogenesis. Agents targeting B-cell differentiation and survival are not efficacious for all patients, indicating a need to target other inflammatory mediators. One such target is the type I interferon pathway. Type I interferons upregulate interferon gene signatures and mediate critical antiviral responses. Dysregulated type I interferon signaling is detectable in many patients with SLE and other autoimmune diseases, and the extent of this dysregulation is associated with disease severity, making type I interferons therapeutically tangible targets. The recent approval of the type I interferon-blocking antibody, anifrolumab, by the US Food and Drug Administration for the treatment of patients with SLE demonstrates the value of targeting this pathway. Nevertheless, the interferon pathway has pleiotropic biology, with multiple cellular targets and signaling components that are incompletely understood. Deconvoluting the complexity of the type I interferon pathway and its intersection with lupus disease pathology will be valuable for further development of targeted SLE therapeutics. This review summarizes the immune mediators of the interferon pathway, its association with disease pathogenesis, and therapeutic modalities targeting the dysregulated interferon pathway.
    Keywords interferon ; systemic lupus erythematosus ; autoimmunity ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 610
    Language English
    Publishing date 2021-10-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  4. Article ; Online: Autoimmunity: twenty years in the Fas lane.

    Ramaswamy, Madhu / Siegel, Richard M

    Journal of immunology (Baltimore, Md. : 1950)

    2012  Volume 189, Issue 11, Page(s) 5097–5100

    MeSH term(s) Animals ; Lupus Erythematosus, Systemic/history ; Lymphatic Diseases/history ; Lymphoproliferative Disorders/history ; fas Receptor/history
    Chemical Substances Fas protein, mouse ; fas Receptor
    Language English
    Publishing date 2012-11-20
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Intramural ; Comment
    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.1202833
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Determination of apoptosis sensitivity in specific T cell subsets from human peripheral blood by utilizing a multiparameter fluorescence-activated cell sorting-based technique.

    Lo, Bernice / Ramaswamy, Madhu

    Methods in molecular biology (Clifton, N.J.)

    2013  Volume 979, Page(s) 33–41

    Abstract: Among the different techniques available for determining physiological cell death or apoptosis in immune cells, fluorescence-activated cell sorting-based approaches prove to be one of the most efficient and quantitative assays in capturing cells that are ...

    Abstract Among the different techniques available for determining physiological cell death or apoptosis in immune cells, fluorescence-activated cell sorting-based approaches prove to be one of the most efficient and quantitative assays in capturing cells that are actively undergoing apoptosis elicited by either extrinsic or intrinsic forms of cell death. The key advantage of the technique is to allow the user to determine apoptotic responses of multiple immune cell types or subsets of the same lineage of immune cells without the prior requirement for cell separation. Here, we describe a "multiparameter" flow method to rapidly determine apoptosis-sensitivity induced by the Fas receptor pathway within different CD4 T cell subsets in a mixed pool of analyzed ex vivo peripheral blood mononuclear cells.
    MeSH term(s) Apoptosis ; CD4-Positive T-Lymphocytes/cytology ; CD4-Positive T-Lymphocytes/metabolism ; Ficoll/chemistry ; Flow Cytometry/methods ; Humans ; T-Lymphocyte Subsets/cytology ; T-Lymphocyte Subsets/metabolism ; fas Receptor/metabolism
    Chemical Substances fas Receptor ; Ficoll (25702-74-3)
    Language English
    Publishing date 2013
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-62703-290-2_4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Immunomodulation of T- and NK-cell Responses by a Bispecific Antibody Targeting CD28 Homolog and PD-L1.

    Ramaswamy, Madhu / Kim, Taeil / Jones, Des C / Ghadially, Hormas / Mahmoud, Tamer I / Garcia, Andrew / Browne, Gareth / Zenonos, Zenon / Puplampu-Dove, Yvonne / Riggs, Jeffrey M / Bhat, Geetha K / Herbst, Ronald / Schofield, Darren J / Carlesso, Gianluca

    Cancer immunology research

    2021  Volume 10, Issue 2, Page(s) 200–214

    Abstract: Checkpoint blockade therapies targeting PD-1/PD-L1 and CTLA-4 are clinically successful but also evoke adverse events due to systemic T-cell activation. We engineered a bispecific, mAb targeting CD28 homolog (CD28H), a newly identified B7 family receptor ...

    Abstract Checkpoint blockade therapies targeting PD-1/PD-L1 and CTLA-4 are clinically successful but also evoke adverse events due to systemic T-cell activation. We engineered a bispecific, mAb targeting CD28 homolog (CD28H), a newly identified B7 family receptor that is constitutively expressed on T and natural killer (NK) cells, with a PD-L1 antibody to potentiate tumor-specific immune responses. The bispecific antibody led to T-cell costimulation, induced NK-cell cytotoxicity of PD-L1-expressing tumor cells, and activated tissue-resident memory CD8
    MeSH term(s) Antibodies, Bispecific/metabolism ; B7-H1 Antigen/metabolism ; CD28 Antigens/metabolism ; CD8-Positive T-Lymphocytes ; Cell Line, Tumor ; Humans ; Immunotherapy ; Killer Cells, Natural ; Lymphocyte Activation ; Neoplasms/metabolism ; Programmed Cell Death 1 Receptor/metabolism
    Chemical Substances Antibodies, Bispecific ; B7-H1 Antigen ; CD28 Antigens ; Programmed Cell Death 1 Receptor
    Language English
    Publishing date 2021-12-22
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2732489-8
    ISSN 2326-6074 ; 2326-6066
    ISSN (online) 2326-6074
    ISSN 2326-6066
    DOI 10.1158/2326-6066.CIR-21-0218
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article: A FAScinating receptor in self-tolerance.

    Ramaswamy, Madhu / Siegel, Richard M

    Immunity

    2007  Volume 26, Issue 5, Page(s) 545–547

    Abstract: In this issue of Immunity,Stranges et al. (2007) ablate expression of the death receptor Fas in T cells, B cells, and DC. Fas deficiency in any of these lineages is sufficient to break self-tolerance. ...

    Abstract In this issue of Immunity,Stranges et al. (2007) ablate expression of the death receptor Fas in T cells, B cells, and DC. Fas deficiency in any of these lineages is sufficient to break self-tolerance.
    MeSH term(s) Animals ; Antigen Presentation/immunology ; Cell Death ; Humans ; Self Tolerance/immunology ; fas Receptor/immunology
    Chemical Substances fas Receptor
    Language English
    Publishing date 2007-05
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 1217235-2
    ISSN 1097-4180 ; 1074-7613
    ISSN (online) 1097-4180
    ISSN 1074-7613
    DOI 10.1016/j.immuni.2007.05.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Extracellular flux analysis to monitor glycolytic rates and mitochondrial oxygen consumption.

    Pelletier, Martin / Billingham, Leah K / Ramaswamy, Madhu / Siegel, Richard M

    Methods in enzymology

    2014  Volume 542, Page(s) 125–149

    Abstract: Evidence accumulating over the past decade has linked alterations in bioenergetic metabolism to the pathogenesis of several diseases, including inflammatory conditions and cancer. However, the mutual relationship between the effector functions and the ... ...

    Abstract Evidence accumulating over the past decade has linked alterations in bioenergetic metabolism to the pathogenesis of several diseases, including inflammatory conditions and cancer. However, the mutual relationship between the effector functions and the metabolism of immune cells has begun to emerge only recently. Similar to malignant cells, both innate and adaptive immune cells undergo a metabolic reprogramming that is required for effector functions, de facto underlying the elicitation of a robust immune response. These changes allow immune cells not only to rapidly respond to pathogens or (pre)malignant cells but also to adapt to changing microenvironmental conditions. Targeting the metabolic alterations of malignant cells has been the subject of an intense wave of investigation, resulting in the identification of promising therapeutic strategies. Since the inflammatory milieu and the tumor microenvironment are similar, the metabolism of immune cells and its regulation has recently come under renewed interest as a target for immunotherapy. Here, we describe different tools and techniques to study the bioenergetic metabolism of cultured cells, using immune cells as a model. Our methodological approach relies on an extracellular flux analyzer, an instrument that enables the real-time measurement of the two central pathways used by living cells to generate adenosine triphosphate: glycolysis and oxidative phosphorylation. This instrument and similar technological innovations have transformed the study of cellular metabolism, unveiling its profound impact on various immunologic and oncological disorders.
    MeSH term(s) Biochemistry/instrumentation ; Biochemistry/methods ; Cells, Cultured ; Energy Metabolism ; Extracellular Space/metabolism ; Glycolysis ; Humans ; Immune System/cytology ; Immune System/metabolism ; Jurkat Cells ; Lymphocytes/metabolism ; Metabolome ; Mitochondria/metabolism ; Myeloid Cells/metabolism ; Oxidative Phosphorylation ; Oxygen/metabolism ; Tissue Array Analysis
    Chemical Substances Oxygen (S88TT14065)
    Language English
    Publishing date 2014
    Publishing country United States
    Document type Journal Article
    ISSN 1557-7988 ; 0076-6879
    ISSN (online) 1557-7988
    ISSN 0076-6879
    DOI 10.1016/B978-0-12-416618-9.00007-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Harnessing programmed cell death as a therapeutic strategy in rheumatic diseases.

    Ramaswamy, Madhu / Deng, Min / Siegel, Richard M

    Nature reviews. Rheumatology

    2011  Volume 7, Issue 3, Page(s) 152–160

    Abstract: Programmed cell death (PCD) is a key process in the regulation of immune cell development and peripheral immune homeostasis. Caspase-dependent apoptosis, as well as a number of alternative cell death mechanisms, account for immune cell PCD induced by ... ...

    Abstract Programmed cell death (PCD) is a key process in the regulation of immune cell development and peripheral immune homeostasis. Caspase-dependent apoptosis, as well as a number of alternative cell death mechanisms, account for immune cell PCD induced by cell-intrinsic and extrinsic pathways. In animal models, compelling evidence has emerged that genetic defects in PCD can result in autoimmune disease. Autoimmune disease can arise from single-gene mutations that affect PCD, and defective PCD has been observed in some tissues and cells from patients with rheumatic disease. Selectively inducing PCD in autoreactive B and T cells is very attractive as a therapeutic strategy because it offers the possibility of permanent elimination of these pathogenic cell subsets. In addition, the anti-inflammatory effects of apoptotic cells may add to the therapeutic benefit of induced PCD. Immune cell subsets vary widely in their sensitivity to specific inducers of cell death, and understanding these differences is key to predicting the outcome of inducing apoptosis for therapeutic means. Here, we review approaches that have been used to induce PCD in the treatment of autoimmune disease, and describe the prospects of bringing these experimental strategies into clinical practice.
    MeSH term(s) Animals ; Apoptosis/physiology ; Autoimmune Diseases/drug therapy ; Autoimmune Diseases/physiopathology ; Caspases/physiology ; Humans ; Models, Animal ; Rheumatic Diseases/drug therapy ; Rheumatic Diseases/physiopathology
    Chemical Substances Caspases (EC 3.4.22.-)
    Language English
    Publishing date 2011-02-01
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Intramural ; Review
    ZDB-ID 2491532-4
    ISSN 1759-4804 ; 1759-4790
    ISSN (online) 1759-4804
    ISSN 1759-4790
    DOI 10.1038/nrrheum.2010.225
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Fibroblast-derived CXCL12 promotes breast cancer metastasis by facilitating tumor cell intravasation.

    Ahirwar, Dinesh K / Nasser, Mohd W / Ouseph, Madhu M / Elbaz, Mohamad / Cuitiño, Maria C / Kladney, Raleigh D / Varikuti, Sanjay / Kaul, Kirti / Satoskar, Abhay R / Ramaswamy, Bhuvaneswari / Zhang, Xiaoli / Ostrowski, Michael C / Leone, Gustavo / Ganju, Ramesh K

    Oncogene

    2018  Volume 37, Issue 32, Page(s) 4428–4442

    Abstract: The chemokine CXCL12 has been shown to regulate breast tumor growth, however, its mechanism in initiating distant metastasis is not well understood. Here, we generated a novel conditional allele of Cxcl12 in mice and used a fibroblast-specific Cre ... ...

    Abstract The chemokine CXCL12 has been shown to regulate breast tumor growth, however, its mechanism in initiating distant metastasis is not well understood. Here, we generated a novel conditional allele of Cxcl12 in mice and used a fibroblast-specific Cre transgene along with various mammary tumor models to evaluate CXCL12 function in the breast cancer metastasis. Ablation of CXCL12 in stromal fibroblasts of mice significantly delayed the time to tumor onset and inhibited distant metastasis in different mouse models. Elucidation of mechanisms using in vitro and in vivo model systems revealed that CXCL12 enhances tumor cell intravasation by increasing vascular permeability and expansion of a leaky tumor vasculature. Furthermore, our studies revealed CXCL12 enhances permeability by recruiting endothelial precursor cells and decreasing endothelial tight junction and adherence junction proteins. High expression of stromal CXCL12 in large cohort of breast cancer patients was directly correlated to blood vessel density and inversely correlated to recurrence and overall patient survival. In addition, our analysis revealed that stromal CXCL12 levels in combination with number of CD31+ blood vessels confers poorer patient survival compared to individual protein level. However, no correlation was observed between epithelial CXCL12 and patient survival or blood vessel density. Our findings describe the novel interactions between fibroblasts-derived CXCL12 and endothelial cells in facilitating tumor cell intrvasation, leading to distant metastasis. Overall, our studies indicate that cross-talk between fibroblast-derived CXCL12 and endothelial cells could be used as novel biomarker and strategy for developing tumor microenvironment based therapies against aggressive and metastatic breast cancer.
    MeSH term(s) Animals ; Breast Neoplasms/metabolism ; Breast Neoplasms/pathology ; Cell Line ; Cell Line, Tumor ; Cell Movement/physiology ; Chemokine CXCL12/metabolism ; Endothelial Cells/metabolism ; Endothelial Cells/pathology ; Female ; Fibroblasts/metabolism ; Fibroblasts/pathology ; Mammary Neoplasms, Animal ; Mice ; Mice, Transgenic ; Neoplasm Invasiveness/pathology ; Neoplasm Metastasis/pathology ; Tumor Microenvironment/physiology
    Chemical Substances Chemokine CXCL12 ; Cxcl12 protein, mouse
    Language English
    Publishing date 2018-05-03
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 639046-8
    ISSN 1476-5594 ; 0950-9232
    ISSN (online) 1476-5594
    ISSN 0950-9232
    DOI 10.1038/s41388-018-0263-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top