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  1. Article ; Online: Autophagy Special Collection: Cell machinery dealing with stress and beyond.

    Cunha, Larissa D

    Science advances

    2022  Volume 8, Issue 43, Page(s) eadf0585

    Language English
    Publishing date 2022-10-26
    Publishing country United States
    Document type Editorial
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.adf0585
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: License to LAP.

    Cunha, Larissa D

    Cell host & microbe

    2021  Volume 29, Issue 8, Page(s) 1216–1217

    Abstract: Engagement of LC3-associated phagocytosis (LAP) in response to the uptake of certain particles modulates innate immune responses. Now in Cell Host and Microbe, Akoumianaki et al. (2021) show how a regulatory role of IL-6 on LAP may be at the core of ... ...

    Abstract Engagement of LC3-associated phagocytosis (LAP) in response to the uptake of certain particles modulates innate immune responses. Now in Cell Host and Microbe, Akoumianaki et al. (2021) show how a regulatory role of IL-6 on LAP may be at the core of susceptibility to secondary infection during severe sepsis.
    MeSH term(s) Autophagy ; Humans ; Immunity, Innate ; Microtubule-Associated Proteins ; Phagocytosis ; Phagosomes
    Chemical Substances Microtubule-Associated Proteins
    Language English
    Publishing date 2021-08-12
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 2278004-X
    ISSN 1934-6069 ; 1931-3128
    ISSN (online) 1934-6069
    ISSN 1931-3128
    DOI 10.1016/j.chom.2021.07.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: In vitro Assessment of Efferocytic Capacity of Human Macrophages Using Flow Cytometry.

    Salina, Ana C G / Fortes-Rocha, Marlon / Cunha, Larissa D

    Bio-protocol

    2023  Volume 13, Issue 24, Page(s) e4903

    Abstract: Clearance of dying cells, named efferocytosis, is a pivotal function of professional phagocytes that impedes the accumulation of cell debris. Efferocytosis can be experimentally assessed by differentially tagging the target cells and professional ... ...

    Abstract Clearance of dying cells, named efferocytosis, is a pivotal function of professional phagocytes that impedes the accumulation of cell debris. Efferocytosis can be experimentally assessed by differentially tagging the target cells and professional phagocytes and analyzing by cell imaging or flow cytometry. Here, we describe an assay to evaluate the uptake of apoptotic cells (ACs) by human macrophages in vitro by labeling the different cells with commercially available dyes and analysis by flow cytometry. We detail the methods to prepare and label human macrophages and apoptotic lymphocytes and the in vitro approach to determine AC uptake. This protocol is based on previously published literature and allows for in vitro modeling of the efficiency of AC engulfment during continual efferocytosis process. Also, it can be modified to evaluate the clearance of different cell types by diverse professional phagocytes.
    Language English
    Publishing date 2023-12-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2833269-6
    ISSN 2331-8325 ; 2331-8325
    ISSN (online) 2331-8325
    ISSN 2331-8325
    DOI 10.21769/BioProtoc.4903
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Recognition of Legionella pneumophila nucleic acids by innate immune receptors.

    Cunha, Larissa D / Zamboni, Dario S

    Microbes and infection

    2014  Volume 16, Issue 12, Page(s) 985–990

    Abstract: Innate immune receptors evolved to sense conserved molecules that are present in microbes or are released during non-physiological conditions. Activation of these receptors is essential for early restriction of microbial infections and generation of ... ...

    Abstract Innate immune receptors evolved to sense conserved molecules that are present in microbes or are released during non-physiological conditions. Activation of these receptors is essential for early restriction of microbial infections and generation of adaptive immunity. Among the conserved molecules sensed by innate immune receptors are the nucleic acids, which are abundantly contained in all infectious organisms including virus, bacteria, fungi and parasites. In this review we focus in the innate immune proteins that function to sense nucleic acids from the intracellular bacterial pathogen Legionella pneumophila and the importance of these processes to the outcome of the infection.
    MeSH term(s) Animals ; DNA, Bacterial/immunology ; Host-Pathogen Interactions ; Humans ; Immunity, Innate/physiology ; Inflammasomes/metabolism ; Interferon Type I/biosynthesis ; Legionella pneumophila/genetics ; Legionella pneumophila/immunology ; Legionnaires' Disease/genetics ; Legionnaires' Disease/immunology ; Legionnaires' Disease/metabolism ; Nucleic Acids/immunology ; Receptors, Immunologic/genetics ; Receptors, Immunologic/metabolism ; Toll-Like Receptor 9/metabolism ; Toll-Like Receptors/metabolism
    Chemical Substances DNA, Bacterial ; Inflammasomes ; Interferon Type I ; Nucleic Acids ; Receptors, Immunologic ; Toll-Like Receptor 9 ; Toll-Like Receptors
    Language English
    Publishing date 2014-12
    Publishing country France
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1465093-9
    ISSN 1769-714X ; 1286-4579
    ISSN (online) 1769-714X
    ISSN 1286-4579
    DOI 10.1016/j.micinf.2014.08.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Subversion of inflammasome activation and pyroptosis by pathogenic bacteria.

    Cunha, Larissa D / Zamboni, Dario S

    Frontiers in cellular and infection microbiology

    2013  Volume 3, Page(s) 76

    Abstract: Activation of the inflammasome occurs in response to a notably high number of pathogenic microbes and is a broad innate immune response that effectively contributes to restriction of pathogen replication and generation of adaptive immunity. Activation of ...

    Abstract Activation of the inflammasome occurs in response to a notably high number of pathogenic microbes and is a broad innate immune response that effectively contributes to restriction of pathogen replication and generation of adaptive immunity. Activation of these platforms leads to caspase-1- and/or caspase-11-dependent secretion of proteins, including cytokines, and induction of a specific form of cell death called pyroptosis, which directly or indirectly contribute for restriction of pathogen replication. Not surprisingly, bona fide intracellular pathogens developed strategies for manipulation of cell death to guarantee intracellular replication. In this sense, the remarkable advances in the knowledge of the inflammasome field have been accompanied by several reports characterizing the inhibition of this platform by several pathogenic bacteria. Herein, we review some processes used by pathogenic bacteria, including Yersinia spp., Pseudomonas aeruginosa, Vibrio parahaemolyticus, Chlamydia trachomatis, Francisella tularensis, Shigella flexneri, Legionella pneumophila, and Coxiella burnetii to evade the activation of the inflammasome and the induction of pyroptosis.
    MeSH term(s) Cell Death ; Gram-Negative Bacteria/growth & development ; Gram-Negative Bacteria/immunology ; Host-Pathogen Interactions ; Immune Evasion ; Inflammasomes/metabolism
    Chemical Substances Inflammasomes
    Language English
    Publishing date 2013-11-26
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2619676-1
    ISSN 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2013.00076
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Retraction Note: Noncanonical autophagy inhibits the autoinflammatory, lupus-like response to dying cells.

    Martinez, Jennifer / Cunha, Larissa D / Park, Sunmin / Yang, Mao / Lu, Qun / Orchard, Robert / Li, Quan-Zhen / Yan, Mei / Janke, Laura / Guy, Cliff / Linkermann, Andreas / Virgin, Herbert W / Green, Douglas R

    Nature

    2022  Volume 609, Issue 7927, Page(s) 640

    Language English
    Publishing date 2022-08-31
    Publishing country England
    Document type Retraction of Publication
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-022-05201-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: LC3-Associated Phagocytosis and Inflammation

    Heckmann, Bradlee L / Boada-Romero, Emilio / Cunha, Larissa D / Magne, Joelle / Green, Douglas R

    Journal of molecular biology. 2017 Nov. 24, v. 429, no. 23

    2017  

    Abstract: LC3-associated phagocytosis (LAP) is a novel form of non-canonical autophagy where LC3 (microtubule-associated protein 1A/1B–light chain 3) is conjugated to phagosome membranes using a portion of the canonical autophagy machinery. The impact of LAP to ... ...

    Abstract LC3-associated phagocytosis (LAP) is a novel form of non-canonical autophagy where LC3 (microtubule-associated protein 1A/1B–light chain 3) is conjugated to phagosome membranes using a portion of the canonical autophagy machinery. The impact of LAP to immune regulation is best characterized in professional phagocytes, in particular macrophages, where LAP has instrumental roles in the clearance of extracellular particles including apoptotic cells and pathogens. Binding of dead cells via receptors present on the macrophage surface results in the translocation of the autophagy machinery to the phagosome and ultimately LC3 conjugation. These events promote a rapid form of phagocytosis that produces an “immunologically silent” clearance of the apoptotic cells. Consequences of LAP deficiency include a decreased capacity to clear dying cells and the establishment of a lupus-like autoimmune disease in mice. The ability of LAP to attenuate autoimmunity likely occurs through the dampening of pro-inflammatory signals upon engulfment of dying cells and prevention of autoantigen presentation to other immune cells. However, it remains unclear how LAP shapes both the activation and outcome of the immune response at the molecular level. Herein, we provide a detailed review of LAP and its known roles in the immune response and provide further speculation on the putative mechanisms by which LAP may regulate immune function, perhaps through the metabolic reprogramming and polarization of macrophages.
    Keywords apoptosis ; autoimmune diseases ; autoimmunity ; autophagy ; immune response ; inflammation ; macrophages ; mice ; pathogens ; phagosomes ; receptors
    Language English
    Dates of publication 2017-1124
    Size p. 3561-3576.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 80229-3
    ISSN 1089-8638 ; 0022-2836
    ISSN (online) 1089-8638
    ISSN 0022-2836
    DOI 10.1016/j.jmb.2017.08.012
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: LC3-Associated Phagocytosis and Inflammation.

    Heckmann, Bradlee L / Boada-Romero, Emilio / Cunha, Larissa D / Magne, Joelle / Green, Douglas R

    Journal of molecular biology

    2017  Volume 429, Issue 23, Page(s) 3561–3576

    Abstract: LC3-associated phagocytosis (LAP) is a novel form of non-canonical autophagy where LC3 (microtubule-associated protein 1A/1B-light chain 3) is conjugated to phagosome membranes using a portion of the canonical autophagy machinery. The impact of LAP to ... ...

    Abstract LC3-associated phagocytosis (LAP) is a novel form of non-canonical autophagy where LC3 (microtubule-associated protein 1A/1B-light chain 3) is conjugated to phagosome membranes using a portion of the canonical autophagy machinery. The impact of LAP to immune regulation is best characterized in professional phagocytes, in particular macrophages, where LAP has instrumental roles in the clearance of extracellular particles including apoptotic cells and pathogens. Binding of dead cells via receptors present on the macrophage surface results in the translocation of the autophagy machinery to the phagosome and ultimately LC3 conjugation. These events promote a rapid form of phagocytosis that produces an "immunologically silent" clearance of the apoptotic cells. Consequences of LAP deficiency include a decreased capacity to clear dying cells and the establishment of a lupus-like autoimmune disease in mice. The ability of LAP to attenuate autoimmunity likely occurs through the dampening of pro-inflammatory signals upon engulfment of dying cells and prevention of autoantigen presentation to other immune cells. However, it remains unclear how LAP shapes both the activation and outcome of the immune response at the molecular level. Herein, we provide a detailed review of LAP and its known roles in the immune response and provide further speculation on the putative mechanisms by which LAP may regulate immune function, perhaps through the metabolic reprogramming and polarization of macrophages.
    MeSH term(s) Animals ; Humans ; Inflammation/physiopathology ; Microtubule-Associated Proteins/metabolism ; Phagocytosis/physiology
    Chemical Substances MAP1LC3A protein, human ; Map1lc3b protein, mouse ; Microtubule-Associated Proteins
    Language English
    Publishing date 2017-08-25
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 80229-3
    ISSN 1089-8638 ; 0022-2836
    ISSN (online) 1089-8638
    ISSN 0022-2836
    DOI 10.1016/j.jmb.2017.08.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Caspase-1 but Not Caspase-11 Is Required for NLRC4-Mediated Pyroptosis and Restriction of Infection by Flagellated Legionella Species in Mouse Macrophages and In Vivo.

    Cerqueira, Daiane M / Pereira, Marcelo S F / Silva, Alexandre L N / Cunha, Larissa D / Zamboni, Dario S

    Journal of immunology (Baltimore, Md. : 1950)

    2015  Volume 195, Issue 5, Page(s) 2303–2311

    Abstract: Gram-negative bacteria from the Legionella genus are intracellular pathogens that cause a severe form of pneumonia called Legionnaires' disease. The bacteria replicate intracellularly in macrophages, and the restriction of bacterial replication by these ... ...

    Abstract Gram-negative bacteria from the Legionella genus are intracellular pathogens that cause a severe form of pneumonia called Legionnaires' disease. The bacteria replicate intracellularly in macrophages, and the restriction of bacterial replication by these cells is critical for host resistance. The activation of the NAIP5/NLRC4 inflammasome, which is readily triggered in response to bacterial flagellin, is essential for the restriction of bacterial replication in murine macrophages. Once activated, this inflammasome induces pore formation and pyroptosis and facilitates the restriction of bacterial replication in macrophages. Because investigations related to the NLRC4-mediated restriction of Legionella replication were performed using mice double deficient for caspase-1 and caspase-11, we assessed the participation of caspase-1 and caspase-11 in the functions of the NLRC4 inflammasome and the restriction of Legionella replication in macrophages and in vivo. By using several species of Legionella and mice singly deficient for caspase-1 or caspase-11, we demonstrated that caspase-1 but not caspase-11 was required for pore formation, pyroptosis, and restriction of Legionella replication in macrophages and in vivo. By generating F1 mice in a mixed 129 × C57BL/6 background deficient (129 × Casp-11(-/-) ) or sufficient (129 × C57BL/6) for caspase-11 expression, we found that caspase-11 was dispensable for the restriction of Legionella pneumophila replication in macrophages and in vivo. Thus, although caspase-11 participates in flagellin-independent noncanonical activation of the NLRP3 inflammasome, it is dispensable for the activities of the NLRC4 inflammasome. In contrast, functional caspase-1 is necessary and sufficient to trigger flagellin/NLRC4-mediated restriction of Legionella spp. infection in macrophages and in vivo.
    MeSH term(s) Animals ; Apoptosis Regulatory Proteins/genetics ; Apoptosis Regulatory Proteins/immunology ; Apoptosis Regulatory Proteins/metabolism ; Blotting, Western ; Calcium-Binding Proteins/genetics ; Calcium-Binding Proteins/immunology ; Calcium-Binding Proteins/metabolism ; Caspase 1/genetics ; Caspase 1/immunology ; Caspase 1/metabolism ; Caspases/genetics ; Caspases/immunology ; Caspases/metabolism ; Cell Line ; Cells, Cultured ; Enzyme Activation/immunology ; Flagella/immunology ; Host-Pathogen Interactions/immunology ; Interleukin-1beta/biosynthesis ; Interleukin-1beta/immunology ; Legionella/classification ; Legionella/immunology ; Legionella/physiology ; Legionella pneumophila/immunology ; Legionella pneumophila/physiology ; Legionnaires' Disease/genetics ; Legionnaires' Disease/immunology ; Legionnaires' Disease/microbiology ; Macrophages/immunology ; Macrophages/metabolism ; Macrophages/microbiology ; Mice, 129 Strain ; Mice, Inbred C57BL ; Mice, Knockout ; Microscopy, Fluorescence ; Pyroptosis/genetics ; Pyroptosis/immunology ; Species Specificity
    Chemical Substances Apoptosis Regulatory Proteins ; Calcium-Binding Proteins ; Interleukin-1beta ; Ipaf protein, mouse ; Casp11 protein, mouse (EC 3.4.22.-) ; Caspases (EC 3.4.22.-) ; Caspase 1 (EC 3.4.22.36)
    Language English
    Publishing date 2015-09-01
    Publishing country United States
    Document type Journal Article ; 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.1501223
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: CASP4/11 Contributes to NLRP3 Activation and COVID-19 Exacerbation.

    Rodrigues, Tamara S / Caetano, Camila C S / de Sá, Keyla S G / Almeida, Leticia / Becerra, Amanda / Gonçalves, Augusto V / Lopes, Leticia de Sousa / Oliveira, Samuel / Mascarenhas, Danielle P A / Batah, Sabrina S / Silva, Bruna M / Gomes, Giovanni F / Castro, Ricardo / Martins, Ronaldo B / Avila, Jonathan / Frantz, Fabiani G / Cunha, Thiago M / Arruda, Eurico / Cunha, Fernando Q /
    Nakaya, Helder / Cunha, Larissa D / Fabro, Alexandre T / Louzada-Junior, Paulo / de Oliveira, Renê D R / Zamboni, Dario S

    The Journal of infectious diseases

    2023  Volume 227, Issue 12, Page(s) 1364–1375

    Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection triggers activation of the NLRP3 inflammasome, which promotes inflammation and aggravates severe COVID-19. Here, we report that SARS-CoV-2 induces upregulation and activation of human ...

    Abstract Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection triggers activation of the NLRP3 inflammasome, which promotes inflammation and aggravates severe COVID-19. Here, we report that SARS-CoV-2 induces upregulation and activation of human caspase-4/CASP4 (mouse caspase-11/CASP11), and this process contributes to NLRP3 activation. In vivo infections performed in transgenic hACE2 humanized mice, deficient or sufficient for Casp11, indicate that hACE2 Casp11-/- mice were protected from disease development, with the increased pulmonary parenchymal area, reduced clinical score of the disease, and reduced mortality. Assessing human samples from fatal cases of COVID-19, we found that CASP4 was expressed in patient lungs and correlated with the expression of inflammasome components and inflammatory mediators, including CASP1, IL1B, IL18, and IL6. Collectively, our data establish that CASP4/11 promotes NLRP3 activation and disease pathology, revealing a possible target for therapeutic interventions for COVID-19.
    MeSH term(s) Mice ; Animals ; Humans ; Inflammasomes/metabolism ; NLR Family, Pyrin Domain-Containing 3 Protein/genetics ; NLR Family, Pyrin Domain-Containing 3 Protein/metabolism ; Macrophages/metabolism ; COVID-19/metabolism ; SARS-CoV-2/metabolism ; Mice, Transgenic
    Chemical Substances Inflammasomes ; NLR Family, Pyrin Domain-Containing 3 Protein
    Language English
    Publishing date 2023-02-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3019-3
    ISSN 1537-6613 ; 0022-1899
    ISSN (online) 1537-6613
    ISSN 0022-1899
    DOI 10.1093/infdis/jiad037
    Database MEDical Literature Analysis and Retrieval System OnLINE

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