LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 193

Search options

  1. Article ; Online: Thromboinflammation: From Atherosclerosis to COVID-19.

    Wagner, Denisa D / Heger, Lukas A

    Arteriosclerosis, thrombosis, and vascular biology

    2022  Volume 42, Issue 9, Page(s) 1103–1112

    Abstract: The activating interplay of thrombosis and inflammation (thromboinflammation) has been established as a major underlying pathway, driving not only cardiovascular disease but also autoimmune disease and most recently, COVID-19. Throughout the years, ... ...

    Abstract The activating interplay of thrombosis and inflammation (thromboinflammation) has been established as a major underlying pathway, driving not only cardiovascular disease but also autoimmune disease and most recently, COVID-19. Throughout the years, innate immune cells have emerged as important modulators of this process. As the most abundant white blood cell in humans, neutrophils are well-positioned to propel thromboinflammation. This includes their ability to trigger an organized cell death pathway with the release of decondensed chromatin structures called neutrophil extracellular traps. Decorated with histones and cytoplasmic and granular proteins, neutrophil extracellular traps exert cytotoxic, immunogenic, and prothrombotic effects accelerating disease progression. Distinct steps leading to extracellular DNA release (NETosis) require the activities of PAD4 (protein arginine deiminase 4) catalyzing citrullination of histones and are supported by neutrophil inflammasome. By linking the immunologic function of neutrophils with the procoagulant and proinflammatory activities of monocytes and platelets, PAD4 activity holds important implications for understanding the processes that fuel thromboinflammation. We will also discuss mechanisms whereby vascular occlusion in thromboinflammation depends on the interaction of neutrophil extracellular traps with ultra-large VWF (von Willebrand Factor) and speculate on the importance of PAD4 in neutrophil inflammasome assembly and neutrophil extracellular traps in thromboinflammatory diseases including atherosclerosis and COVID-19.
    MeSH term(s) Atherosclerosis/metabolism ; COVID-19 ; Extracellular Traps/metabolism ; Histones/metabolism ; Humans ; Inflammasomes/metabolism ; Inflammation/metabolism ; Neutrophils/metabolism ; Thromboinflammation ; Thrombosis/etiology ; Thrombosis/metabolism ; von Willebrand Factor/metabolism
    Chemical Substances Histones ; Inflammasomes ; von Willebrand Factor
    Language English
    Publishing date 2022-07-08
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 1221433-4
    ISSN 1524-4636 ; 1079-5642
    ISSN (online) 1524-4636
    ISSN 1079-5642
    DOI 10.1161/ATVBAHA.122.317162
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Neutrophil peptidylarginine deiminase 4 plays a systemic role in obesity-induced chronic inflammation in mice.

    Van Bruggen, Stijn / Sheehy, Casey E / Kraisin, Sirima / Frederix, Liesbeth / Wagner, Denisa D / Martinod, Kimberly

    Journal of thrombosis and haemostasis : JTH

    2024  

    Abstract: Background: Obesity is an increasing problem in our current society and is expected to keep rising in incidence. With its multiorigin, complex pathophysiology, it is difficult to treat and easy to acquire unnoticeably. During obesity, it has been ... ...

    Abstract Background: Obesity is an increasing problem in our current society and is expected to keep rising in incidence. With its multiorigin, complex pathophysiology, it is difficult to treat and easy to acquire unnoticeably. During obesity, it has been established that the body is in a constant state of low-grade inflammation, thereby causing changes in immune cell physiology.
    Objectives: Here, we investigated the influence of neutrophils, more specifically as a result of peptidylarginine deiminase 4 (PAD4) activity and the release of neutrophil extracellular traps (NETs), during obesity-induced chronic inflammation.
    Methods: Wild-type mice were placed on a high-fat diet (HFD) and investigated over a period of 10 weeks for NET formation and its impact on the heart. Neutrophil-selective PAD4 knockout (Ne-PAD4
    Results: As a result of high fat intake, we observed clear alteration in the priming status of isolated neutrophils toward NET release, including early stages of speck formation and histone citrullination of apoptosis-associated speck-like protein containing a CARD. Ne-PAD4
    Conclusion: Detrimental physiological effects, the result of obesity progression, can in part be attributed to neutrophil PAD4 and NETs in response to chronic inflammation.
    Language English
    Publishing date 2024-02-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2112661-6
    ISSN 1538-7836 ; 1538-7933
    ISSN (online) 1538-7836
    ISSN 1538-7933
    DOI 10.1016/j.jtha.2024.01.022
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Neutrophil stimulation with citrullinated histone H4 slows down calcium influx and reduces NET formation compared with native histone H4.

    Lai Shi / Karen Aymonnier / Denisa D Wagner

    PLoS ONE, Vol 16, Iss 5, p e

    2021  Volume 0251726

    Abstract: Peptidylarginine deiminase 4 (PAD4) catalyzes posttranslational modification of many target proteins through converting protein arginine or mono-methylarginine to citrulline. Neutrophil extracellular trap (NET) formation is the most dramatic ... ...

    Abstract Peptidylarginine deiminase 4 (PAD4) catalyzes posttranslational modification of many target proteins through converting protein arginine or mono-methylarginine to citrulline. Neutrophil extracellular trap (NET) formation is the most dramatic manifestation of PAD4-mediated hypercitrullination reaction in neutrophils, which is characterized by the release of nuclear chromatin to form a chromatin network in the extracellular space. Histones H4, one of the major protein components of chromatin, is released into the extracellular space during sepsis, trauma, and ischemia-reperfusion injury and can also be released during the process of NET formation, along with its citrullinated form. The present study showed that histone H4 can induce NET formation in a calcium and PAD4 dependent manner. Histone H4 caused permeabilization of the neutrophil membrane and sustained rise in intracellular calcium that is necessary for activation of PAD4. In comparison, citrullinated histone H4 induced less calcium influx compared with its native form, leading to reduced NET formation. These studies suggest that citrullinated histone H4 could serve as a brake in the pathology of NETs, slowing down the vicious circle between histone H4 and NETs.
    Keywords Medicine ; R ; Science ; Q
    Subject code 572
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  4. Article ; Online: Neutrophil stimulation with citrullinated histone H4 slows down calcium influx and reduces NET formation compared with native histone H4.

    Shi, Lai / Aymonnier, Karen / Wagner, Denisa D

    PloS one

    2021  Volume 16, Issue 5, Page(s) e0251726

    Abstract: Peptidylarginine deiminase 4 (PAD4) catalyzes posttranslational modification of many target proteins through converting protein arginine or mono-methylarginine to citrulline. Neutrophil extracellular trap (NET) formation is the most dramatic ... ...

    Abstract Peptidylarginine deiminase 4 (PAD4) catalyzes posttranslational modification of many target proteins through converting protein arginine or mono-methylarginine to citrulline. Neutrophil extracellular trap (NET) formation is the most dramatic manifestation of PAD4-mediated hypercitrullination reaction in neutrophils, which is characterized by the release of nuclear chromatin to form a chromatin network in the extracellular space. Histones H4, one of the major protein components of chromatin, is released into the extracellular space during sepsis, trauma, and ischemia-reperfusion injury and can also be released during the process of NET formation, along with its citrullinated form. The present study showed that histone H4 can induce NET formation in a calcium and PAD4 dependent manner. Histone H4 caused permeabilization of the neutrophil membrane and sustained rise in intracellular calcium that is necessary for activation of PAD4. In comparison, citrullinated histone H4 induced less calcium influx compared with its native form, leading to reduced NET formation. These studies suggest that citrullinated histone H4 could serve as a brake in the pathology of NETs, slowing down the vicious circle between histone H4 and NETs.
    MeSH term(s) Animals ; Calcium Signaling/drug effects ; Citrullination ; Extracellular Traps/metabolism ; HL-60 Cells ; Histones/metabolism ; Histones/pharmacology ; Humans ; Mice ; Mice, Knockout ; Neutrophil Activation/drug effects ; Neutrophils/metabolism
    Chemical Substances Histones
    Language English
    Publishing date 2021-05-17
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0251726
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Anti-inflammatory protective effect of ADAMTS-13 in murine arthritis models.

    Fukui, Shoichi / Gutch, Sarah / Fukui, Saeko / Chu, Long / Wagner, Denisa D

    Journal of thrombosis and haemostasis : JTH

    2022  Volume 20, Issue 10, Page(s) 2386–2393

    Abstract: Background: Patients with rheumatoid arthritis (RA) have frequent thrombotic events with endothelial dysfunction. Von Willebrand factor (VWF) has been shown to bind neutrophil extracellular traps (NETs) and NETs are part of RA etiology.: Objectives: ... ...

    Abstract Background: Patients with rheumatoid arthritis (RA) have frequent thrombotic events with endothelial dysfunction. Von Willebrand factor (VWF) has been shown to bind neutrophil extracellular traps (NETs) and NETs are part of RA etiology.
    Objectives: This study aims to elucidate whether this prothrombotic status exacerbates inflammation in arthritis. Here we focus on the involvement of A Disintegrin And Metalloprotease with ThromboSpondin type 1 motif, member 13 (ADAMTS-13), an enzyme cleaving VWF and its effect on NET deposition and RA development.
    Methods: We evaluated the influence of the Adamts13 gene and recombinant human ADAMTS-13 (rhADAMTS-13) on arthritis in the mouse models of collagen-induced arthritis (CIA). We also assessed VWF and NETs in synovial tissue.
    Results: Several Adamts13
    Conclusions: Our results demonstrate the inhibitory role of Adamts13 in murine arthritis and the effectiveness of rhADAMTS-13 treatment. Additionally, this study suggests that deposition of VWF in the synovium and subsequent pathogenic NET retention promotes arthritis. Treatment with rhADAMTS-13 provides a potential therapeutic approach targeting inflammation and pro-thrombotic state in arthritis.
    MeSH term(s) ADAMTS13 Protein/metabolism ; Animals ; Arthritis/metabolism ; Arthritis/pathology ; Disintegrins ; Humans ; Inflammation ; Interleukin-6 ; Mice ; Mice, Inbred DBA ; Thrombosis ; X-Ray Microtomography ; von Willebrand Factor/metabolism
    Chemical Substances Disintegrins ; Interleukin-6 ; von Willebrand Factor ; ADAMTS13 Protein (EC 3.4.24.87)
    Language English
    Publishing date 2022-08-04
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2112661-6
    ISSN 1538-7836 ; 1538-7933
    ISSN (online) 1538-7836
    ISSN 1538-7933
    DOI 10.1111/jth.15828
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Peptidylarginine deiminase 4: a nuclear button triggering neutrophil extracellular traps in inflammatory diseases and aging.

    Wong, Siu Ling / Wagner, Denisa D

    FASEB journal : official publication of the Federation of American Societies for Experimental Biology

    2018  , Page(s) fj201800691R

    Abstract: ... We identify unresolved issues and new research directions.-Wong, S. L., Wagner, D. D. Peptidylarginine ...

    Abstract Peptidylarginine deiminase 4 (PAD4) is a nuclear citrullinating enzyme that is critically involved in the release of decondensed chromatin from neutrophils as neutrophil extracellular traps (NETs). NETs, together with fibrin, are implicated in host defense against pathogens; however, the formation of NETs (NETosis) has injurious effects that may outweigh their protective role. For example, PAD4 activity produces citrullinated neoantigens that promote autoimmune diseases, such as rheumatoid arthritis, to which PAD4 is genetically linked and where NETosis is prominent. NETs are also generated in basic sterile inflammatory responses that are induced by many inflammatory stimuli, including cytokines, hypoxia, and activated platelets. Mice that lack PAD4-deficient in NETosis-serve as an excellent tool with which to study the importance of NETs in disease models. In recent years, animal and human studies have demonstrated that NETs contribute to the etiology and propagation of many common noninfectious diseases, the focus of our review. We will discuss the role of NETs in thrombotic and cardiovascular disease, the induction of NETs by cancers and its implications for cancer progression and cancer-associated thrombosis, and elevated NETosis in diabetes and its negative impact on wound healing, and will propose a link between PAD4/NETs and age-related organ fibrosis. We identify unresolved issues and new research directions.-Wong, S. L., Wagner, D. D. Peptidylarginine deiminase 4: a nuclear button triggering neutrophil extracellular traps in inflammatory diseases and aging.
    Language English
    Publishing date 2018-06-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 639186-2
    ISSN 1530-6860 ; 0892-6638
    ISSN (online) 1530-6860
    ISSN 0892-6638
    DOI 10.1096/fj.201800691R
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: NLRP3 inflammasome activation in neutrophils directs early inflammatory response in murine peritonitis.

    Fukui, Saeko / Fukui, Shoichi / Van Bruggen, Stijn / Shi, Lai / Sheehy, Casey E / Chu, Long / Wagner, Denisa D

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 21313

    Abstract: NLR family pyrin domain containing 3 (NLRP3) inflammasome mediates caspase-1-dependent processing of inflammatory cytokines such as IL-1β, an essential endothelial activator, and contributes to the pathology of inflammatory diseases. To evaluate the role ...

    Abstract NLR family pyrin domain containing 3 (NLRP3) inflammasome mediates caspase-1-dependent processing of inflammatory cytokines such as IL-1β, an essential endothelial activator, and contributes to the pathology of inflammatory diseases. To evaluate the role of NLRP3 in neutrophils in endothelial activation, which is still elusive, we used the thioglycollate-induced peritonitis model characterized by an early neutrophil influx, on Nlrp3
    MeSH term(s) Mice ; Animals ; NLR Family, Pyrin Domain-Containing 3 Protein/genetics ; NLR Family, Pyrin Domain-Containing 3 Protein/metabolism ; Neutrophils/metabolism ; Endothelial Cells/metabolism ; Inflammasomes/metabolism ; Interleukin-1beta/metabolism ; Caspase 1/metabolism ; Peritonitis/chemically induced ; Peritonitis/metabolism ; Mice, Inbred C57BL
    Chemical Substances NLR Family, Pyrin Domain-Containing 3 Protein ; Inflammasomes ; Interleukin-1beta ; Caspase 1 (EC 3.4.22.36) ; Nlrp3 protein, mouse
    Language English
    Publishing date 2022-12-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-25176-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: NLRP3 is essential for neutrophil polarization and chemotaxis in response to leukotriene B4 gradient.

    Van Bruggen, Stijn / Jarrot, Pierre-André / Thomas, Eline / Sheehy, Casey E / Silva, Camila M S / Hsu, Alan Y / Cunin, Pierre / Nigrovic, Peter A / Gomes, Edgar R / Luo, Hongbo R / Waterman, Clare M / Wagner, Denisa D

    Proceedings of the National Academy of Sciences of the United States of America

    2023  Volume 120, Issue 35, Page(s) e2303814120

    Abstract: Neutrophil recruitment to sites of infection and inflammation is an essential process in the early innate immune response. Upon activation, a subset of neutrophils rapidly assembles the multiprotein complex known as the NLRP3 inflammasome. The NLRP3 ... ...

    Abstract Neutrophil recruitment to sites of infection and inflammation is an essential process in the early innate immune response. Upon activation, a subset of neutrophils rapidly assembles the multiprotein complex known as the NLRP3 inflammasome. The NLRP3 inflammasome forms at the microtubule organizing center, which promotes the formation of interleukin (IL)-1β and IL-18, essential cytokines in the immune response. We recently showed that mice deficient in NLRP3 (NLRP3
    MeSH term(s) Animals ; Mice ; Chemotaxis ; Inflammasomes ; Leukotriene B4/metabolism ; Neutrophils ; NLR Family, Pyrin Domain-Containing 3 Protein/metabolism
    Chemical Substances Inflammasomes ; Leukotriene B4 (1HGW4DR56D) ; NLR Family, Pyrin Domain-Containing 3 Protein ; Nlrp3 protein, mouse
    Language English
    Publishing date 2023-08-21
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, N.I.H., Intramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2303814120
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Cellular Mechanisms of NETosis.

    Thiam, Hawa Racine / Wong, Siu Ling / Wagner, Denisa D / Waterman, Clare M

    Annual review of cell and developmental biology

    2020  Volume 36, Page(s) 191–218

    Abstract: Neutrophils are critical to innate immunity, including host defense against bacterial and fungal infections. They achieve their host defense role by phagocytosing pathogens, secreting their granules full of cytotoxic enzymes, or expelling neutrophil ... ...

    Abstract Neutrophils are critical to innate immunity, including host defense against bacterial and fungal infections. They achieve their host defense role by phagocytosing pathogens, secreting their granules full of cytotoxic enzymes, or expelling neutrophil extracellular traps (NETs) during the process of NETosis. NETs are weblike DNA structures decorated with histones and antimicrobial proteins released by activated neutrophils. Initially described as a means for neutrophils to neutralize pathogens, NET release also occurs in sterile inflammation, promotes thrombosis, and can mediate tissue damage. To effectively manipulate this double-edged sword to fight a particular disease, researchers must work toward understanding the mechanisms driving NETosis. Such understanding would allow the generation of new drugs to promote or prevent NETosis as needed. While knowledge regarding the (patho)physiological roles of NETosis is accumulating, little is known about the cellular and biophysical bases of this process. In this review, we describe and discuss our current knowledge of the molecular, cellular, and biophysical mechanisms mediating NET release as well as open questions in the field.
    MeSH term(s) Animals ; Cell Membrane/metabolism ; Cell Nucleus/metabolism ; Cytoskeleton/metabolism ; Cytosol/metabolism ; DNA/metabolism ; Extracellular Traps/metabolism ; Humans
    Chemical Substances DNA (9007-49-2)
    Language English
    Publishing date 2020-07-14
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1293750-2
    ISSN 1530-8995 ; 1081-0706
    ISSN (online) 1530-8995
    ISSN 1081-0706
    DOI 10.1146/annurev-cellbio-020520-111016
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Alleviation of arthritis through prevention of neutrophil extracellular traps by an orally available inhibitor of protein arginine deiminase 4.

    Gajendran, Chandru / Fukui, Shoichi / Sadhu, Naveen M / Zainuddin, Mohammed / Rajagopal, Sridharan / Gosu, Ramachandraiah / Gutch, Sarah / Fukui, Saeko / Sheehy, Casey E / Chu, Long / Vishwakarma, Santosh / Jeyaraj, D A / Hallur, Gurulingappa / Wagner, Denisa D / Sivanandhan, Dhanalakshmi

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 3189

    Abstract: Protein arginine deiminases (PAD) 4 is an enzyme that catalyzes citrullination of protein and its role in autoimmune diseases has been established through clinical genetics and gene knock out studies in mice. Further, studies with PAD4 - deficient mice ... ...

    Abstract Protein arginine deiminases (PAD) 4 is an enzyme that catalyzes citrullination of protein and its role in autoimmune diseases has been established through clinical genetics and gene knock out studies in mice. Further, studies with PAD4 - deficient mice have shown that PAD4 deficiency does not lead to increased infection or immune suppression, which makes PAD4 an attractive therapeutic target for auto-immune and inflammatory diseases. PAD4 has critical enzymatic role of promoting chromatin decondensation and neutrophil extracellular traps (NETs) formation that is associated with a number of immune-mediated pathological conditions. Here, we present a non-covalent PAD4 inhibitor JBI-589 with high PAD4 isoform selectivity and delineated its binding mode at 2.88 Å resolution by X-ray crystallography. We confirmed its effectiveness in inhibiting NET formation in vitro. Additionally, by using two mouse arthritis models for human rheumatoid arthritis (RA), the well-known disease associated with PAD4 clinically, we established its efficacy in vivo. These results suggest that JBI-589 would be beneficial for both PAD4 and NET-associated pathological conditions.
    MeSH term(s) Animals ; Humans ; Mice ; Arthritis, Rheumatoid/metabolism ; Extracellular Traps/metabolism ; Mice, Knockout ; Neutrophils/metabolism ; Protein-Arginine Deiminase Type 4/antagonists & inhibitors
    Chemical Substances Protein-Arginine Deiminase Type 4 (EC 3.5.3.15)
    Language English
    Publishing date 2023-02-23
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-30246-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top