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  1. Article ; Online: Identification of molecular candidates which regulate calcium-dependent CD8

    Zöphel, Sylvia / Schäfer, Gertrud / Nazarieh, Maryam / Konetzki, Verena / Hoxha, Cora / Meese, Eckart / Hoth, Markus / Helms, Volkhard / Hamed, Mohamed / Schwarz, Eva C

    Molecular immunology

    2023  Volume 157, Page(s) 202–213

    Abstract: Cytotoxic ... ...

    Abstract Cytotoxic CD8
    MeSH term(s) Humans ; CD8-Positive T-Lymphocytes ; Calcium ; Cytotoxicity, Immunologic ; T-Lymphocytes, Cytotoxic ; Killer Cells, Natural ; Antineoplastic Agents
    Chemical Substances Calcium (SY7Q814VUP) ; Antineoplastic Agents
    Language English
    Publishing date 2023-04-17
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 424427-8
    ISSN 1872-9142 ; 0161-5890
    ISSN (online) 1872-9142
    ISSN 0161-5890
    DOI 10.1016/j.molimm.2023.04.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Cytotoxic Efficiency of Human CD8

    Knörck, Arne / Schäfer, Gertrud / Alansary, Dalia / Richter, Josephine / Thurner, Lorenz / Hoth, Markus / Schwarz, Eva C

    Frontiers in immunology

    2022  Volume 13, Page(s) 838484

    Abstract: Immunological memory is important to protect humans against recurring diseases. Memory ... ...

    Abstract Immunological memory is important to protect humans against recurring diseases. Memory CD8
    MeSH term(s) Antineoplastic Agents ; CD8-Positive T-Lymphocytes ; Humans ; Immunologic Memory ; Necrosis/metabolism ; Neoplasm Recurrence, Local/metabolism ; Perforin/metabolism
    Chemical Substances Antineoplastic Agents ; Perforin (126465-35-8)
    Language English
    Publishing date 2022-04-13
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2022.838484
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Conference proceedings: Die Quantifizierung von Koronarkalk auf Grundlage virtuell nativer Rekonstruktionen aus koronaren CT-Angiographien an einem Photon-Counting Detektor CT

    Risch, F / Braun, F / Decker, J / Eva, H / Scheurig-Münkler, C / Schwarz, E / Schwarz, F / Kröncke, T / Schoepf, J / Woznicki, P / Wolny, C

    RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren

    2022  Volume 194, Issue S 01

    Event/congress 103. Deutscher Röntgenkongress der Deutschen Röntgengesellschaft e. V., RheinMain CongressCenter Wiesbaden, 2022-05-25
    Language German
    Publishing date 2022-08-01
    Publisher Georg Thieme Verlag
    Publishing place Stuttgart ; New York
    Document type Article ; Conference proceedings
    ZDB-ID 554830-5
    ISSN 1438-9010 ; 1438-9029 ; 0340-1618 ; 0936-6652 ; 1433-5972
    ISSN (online) 1438-9010
    ISSN 1438-9029 ; 0340-1618 ; 0936-6652 ; 1433-5972
    DOI 10.1055/s-0042-1749770
    Database Thieme publisher's database

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  4. Article ; Online: Identification of molecular candidates which regulate calcium-dependent CD8+ T-cell cytotoxicity

    Zöphel, Sylvia / Schäfer, Gertrud / Nazarieh, Maryam / Konetzki, Verena / Hoxha, Cora / Meese, Eckart / Hoth, Markus / Helms, Volkhard / Abū al-Saʻūd, Muḥammad Ḥāmid Muʻawwaḍ / Schwarz, Eva C.

    Molecular Immunology. 2023 May, v. 157 p.202-213

    2023  

    Abstract: ... Ca²⁺-limiting conditions. Overall, we identified four hits, CCR5 (C-C chemokine receptor type five ...

    Abstract Cytotoxic CD8⁺ T lymphocytes (CTL) eliminate infected cells or transformed tumor cells by releasing perforin-containing cytotoxic granules at the immunological synapse. The secretion of such granules depends on Ca²⁺-influx through store operated Ca²⁺ channels, formed by STIM (stromal interaction molecule)-activated Orai proteins. Whereas molecular mechanisms of the secretion machinery are well understood, much less is known about the molecular machinery that regulates the efficiency of Ca²⁺-dependent target cell killing. CTL killing efficiency is of high interest considering the number of studies on CD8⁺ T lymphocytes modified for clinical use. Here, we isolated total RNA from primary human cells: natural killer (NK) cells, non-stimulated CD8⁺ T-cells, and from Staphylococcus aureus enterotoxin A (SEA) stimulated CD8⁺ T-cells (SEA-CTL) and conducted whole genome expression profiling by microarray experiments. Based on differential expression analysis of the transcriptome data and analysis of master regulator genes, we identified 31 candidates which potentially regulate Ca²⁺-homeostasis in CTL. To investigate a putative function of these candidates in CTL cytotoxicity, we transfected either SEA-stimulated CTL (SEA-CTL) or antigen specific CD8⁺ T-cell clones (CTL-MART-1) with siRNAs specific against the identified candidates and analyzed the killing capacity using a real-time killing assay. In addition, we complemented the analysis by studying the effect of inhibitory substances acting on the candidate proteins if available. Finally, to unmask their involvement in Ca²⁺ dependent cytotoxicity, candidates were also analyzed under Ca²⁺-limiting conditions. Overall, we identified four hits, CCR5 (C-C chemokine receptor type five), KCNN4 (potassium calcium-activated channel subfamily N), RCAN3 (regulator of calcineurin) and BCL (B-cell lymphoma) 2 which clearly affect the efficiency of Ca²⁺ dependent cytotoxicity in CTL-MART-1 cells, CCR5, BCL2, and KCNN4 in a positive manner, and RCAN3 in a negative way.
    Keywords B-cell lymphoma ; CD8-positive T-lymphocytes ; RNA ; Staphylococcus aureus ; antigens ; beta chemokines ; calcium ; chemokine receptors ; cytotoxicity ; enterotoxins ; gene expression regulation ; genome ; humans ; immunological synapse ; microarray technology ; potassium ; secretion ; transcriptome ; CTL (cytotoxic T lymphocytes) ; Real-time killing assay ; Cytotoxic efficiency ; Differential expression analyses ; Transcriptome data analyses
    Language English
    Dates of publication 2023-05
    Size p. 202-213.
    Publishing place Elsevier Ltd
    Document type Article ; Online
    Note Use and reproduction
    ZDB-ID 424427-8
    ISSN 1872-9142 ; 0161-5890
    ISSN (online) 1872-9142
    ISSN 0161-5890
    DOI 10.1016/j.molimm.2023.04.002
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: High glucose distinctively regulates Ca

    Zou, Huajiao / Yang, Wenjuan / Schwär, Gertrud / Zhao, Renping / Alansary, Dalia / Yin, Deling / Schwarz, Eva C / Niemeyer, Barbara A / Qu, Bin

    European journal of immunology

    2020  Volume 50, Issue 12, Page(s) 2095–2098

    Abstract: In CTLs: High glucose-culture enhances thapsigargin-induced SOCE but decreases target recognition-induced ... ...

    Abstract In CTLs: High glucose-culture enhances thapsigargin-induced SOCE but decreases target recognition-induced Ca
    MeSH term(s) Calcium/metabolism ; Calcium Channels/metabolism ; Glucose/metabolism ; Humans ; Signal Transduction/drug effects ; T-Lymphocytes, Cytotoxic/drug effects ; T-Lymphocytes, Cytotoxic/metabolism ; Thapsigargin/pharmacology
    Chemical Substances Calcium Channels ; Thapsigargin (67526-95-8) ; Glucose (IY9XDZ35W2) ; Calcium (SY7Q814VUP)
    Language English
    Publishing date 2020-08-18
    Publishing country Germany
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 120108-6
    ISSN 1521-4141 ; 0014-2980
    ISSN (online) 1521-4141
    ISSN 0014-2980
    DOI 10.1002/eji.202048577
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Interdependence of sequential cytotoxic T lymphocyte and natural killer cell cytotoxicity against melanoma cells.

    Friedmann, Kim S / Kaschek, Lea / Knörck, Arne / Cappello, Sabrina / Lünsmann, Niklas / Küchler, Nadja / Hoxha, Cora / Schäfer, Gertrud / Iden, Sandra / Bogeski, Ivan / Kummerow, Carsten / Schwarz, Eva C / Hoth, Markus

    The Journal of physiology

    2022  Volume 600, Issue 23, Page(s) 5027–5054

    Abstract: Cytotoxic T lymphocytes (CTL) and natural killer (NK) cells recognize and eliminate cancer cells. However, immune evasion, downregulation of immune function by the tumour microenvironment and resistance of cancer cells are major problems. Although CTL ... ...

    Abstract Cytotoxic T lymphocytes (CTL) and natural killer (NK) cells recognize and eliminate cancer cells. However, immune evasion, downregulation of immune function by the tumour microenvironment and resistance of cancer cells are major problems. Although CTL and NK cells are both important to eliminate cancer, most studies address them individually. We quantified sequential primary human CTL and NK cell cytotoxicity against the melanoma cell line SK-Mel-5. At high effector-to-target ratios, NK cells or melan-A (MART-1)-specific CTL eliminated all SK-Mel-5 cells within 24 h, indicating that SK-Mel-5 cells are not resistant initially. However, at lower effector-to-target ratios, which resemble numbers of the immune contexture in human cancer, a substantial number of SK-Mel-5 cells survived. Pre-exposure to CTL induced resistance in surviving SK-Mel-5 cells to subsequent CTL or NK cell cytotoxicity, and pre-exposure to NK cells induced resistance in surviving SK-Mel-5 cells to NK cells. Higher human leucocyte antigen class I expression or interleukin-6 levels were correlated with resistance to NK cells, whereas reduction in MART-1 antigen expression was correlated with reduced CTL cytotoxicity. The CTL cytotoxicity was rescued beyond control levels by exogenous MART-1 antigen. In contrast to the other three combinations, CTL cytotoxicity against SK-Mel-5 cells was enhanced following NK cell pre-exposure. Our assay allows quantification of sequential CTL and NK cell cytotoxicity and might guide strategies for efficient CTL-NK cell anti-melanoma therapies. KEY POINTS: Cytotoxic T lymphocytes (CTL) and natural killer (NK) cells eliminate cancer cells. Both CTL and NK cells attack the same targets, but most studies address them individually. In a sequential cytotoxicity model, the interdependence of antigen-specific CTL and NK cell cytotoxicity against melanoma is quantified. High numbers of antigen-specific CTL and NK cells eliminate all melanoma cells. However, lower numbers induce resistance if secondary CTL or NK cell exposure follows initial CTL exposure or if secondary NK cell exposure follows initial NK cell exposure. On the contrary, if secondary CTL exposure follows initial NK cell exposure, cytotoxicity is enhanced. Alterations in human leucocyte antigen class I expression and interleukin-6 levels are correlated with resistance to NK cells, whereas a reduction in antigen expression is correlated with reduced CTL cytotoxicity; CTL cytotoxicity is rescued beyond control levels by exogenous antigen. This assay and the results on interdependencies will help us to understand and optimize immune therapies against cancer.
    MeSH term(s) Humans ; T-Lymphocytes, Cytotoxic ; MART-1 Antigen ; Interleukin-6 ; Killer Cells, Natural ; Melanoma ; Tumor Microenvironment
    Chemical Substances MART-1 Antigen ; Interleukin-6
    Language English
    Publishing date 2022-11-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 3115-x
    ISSN 1469-7793 ; 0022-3751
    ISSN (online) 1469-7793
    ISSN 0022-3751
    DOI 10.1113/JP283667
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Compound heterozygous variants in OTULIN are associated with fulminant atypical late-onset ORAS.

    Zinngrebe, Julia / Moepps, Barbara / Monecke, Thomas / Gierschik, Peter / Schlichtig, Ferdinand / Barth, Thomas F E / Strauß, Gudrun / Boldrin, Elena / Posovszky, Carsten / Schulz, Ansgar / Beringer, Ortraud / Rieser, Eva / Jacobsen, Eva-Maria / Lorenz, Myriam Ricarda / Schwarz, Klaus / Pannicke, Ulrich / Walczak, Henning / Niessing, Dierk / Schuetz, Catharina /
    Fischer-Posovszky, Pamela / Debatin, Klaus-Michael

    EMBO molecular medicine

    2022  Volume 14, Issue 3, Page(s) e14901

    Abstract: ... heterozygous variants (c.258G>A (p.M86I)/c.500G>C (p.W167S)) in the OTULIN gene in a 7-year-old affected ...

    Abstract Autoinflammatory diseases are a heterogenous group of disorders defined by fever and systemic inflammation suggesting involvement of genes regulating innate immune responses. Patients with homozygous loss-of-function variants in the OTU-deubiquitinase OTULIN suffer from neonatal-onset OTULIN-related autoinflammatory syndrome (ORAS) characterized by fever, panniculitis, diarrhea, and arthritis. Here, we describe an atypical form of ORAS with distinct clinical manifestation of the disease caused by two new compound heterozygous variants (c.258G>A (p.M86I)/c.500G>C (p.W167S)) in the OTULIN gene in a 7-year-old affected by a life-threatening autoinflammatory episode with sterile abscess formation. On the molecular level, we find binding of OTULIN to linear ubiquitin to be compromised by both variants; however, protein stability and catalytic activity is most affected by OTULIN variant p.W167S. These molecular changes together lead to increased levels of linear ubiquitin linkages in patient-derived cells triggering the disease. Our data indicate that the spectrum of ORAS patients is more diverse than previously thought and, thus, supposedly asymptomatic individuals might also be affected. Based on our results, we propose to subdivide the ORAS into classical and atypical entities.
    MeSH term(s) Child ; Endopeptidases/genetics ; Hereditary Autoinflammatory Diseases/genetics ; Humans ; Infant, Newborn ; Inflammation/genetics ; Ubiquitin/metabolism
    Chemical Substances Ubiquitin ; Endopeptidases (EC 3.4.-) ; OTULIN protein, human (EC 3.4.-)
    Language English
    Publishing date 2022-02-16
    Publishing country England
    Document type Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2467145-9
    ISSN 1757-4684 ; 1757-4676
    ISSN (online) 1757-4684
    ISSN 1757-4676
    DOI 10.15252/emmm.202114901
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: High Glucose Enhances Cytotoxic T Lymphocyte-Mediated Cytotoxicity.

    Zhu, Jie / Yang, Wenjuan / Zhou, Xiangda / Zöphel, Dorina / Soriano-Baguet, Leticia / Dolgener, Denise / Carlein, Christopher / Hof, Chantal / Zhao, Renping / Ye, Shandong / Schwarz, Eva C / Brenner, Dirk / Prates Roma, Leticia / Qu, Bin

    Frontiers in immunology

    2021  Volume 12, Page(s) 689337

    Abstract: Cytotoxic T lymphocytes (CTLs) are key players to eliminate tumorigenic or pathogen-infected cells using lytic granules (LG) and Fas ligand (FasL) pathways. Depletion of glucose leads to severely impaired cytotoxic function of CTLs. However, the impact ... ...

    Abstract Cytotoxic T lymphocytes (CTLs) are key players to eliminate tumorigenic or pathogen-infected cells using lytic granules (LG) and Fas ligand (FasL) pathways. Depletion of glucose leads to severely impaired cytotoxic function of CTLs. However, the impact of excessive glucose on CTL functions still remains largely unknown. Here we used primary human CD8
    MeSH term(s) Animals ; Cells, Cultured ; Glucose/pharmacology ; Glycolysis/drug effects ; Humans ; Male ; Mice, Inbred C57BL ; T-Lymphocytes, Cytotoxic/drug effects ; T-Lymphocytes, Cytotoxic/metabolism ; Mice
    Chemical Substances Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2021-06-25
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2021.689337
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Macrophage Polarization is Deregulated in Haemophilia.

    Knowles, Lynn M / Kagiri, Daniela / Bernard, Martin / Schwarz, Eva C / Eichler, Hermann / Pilch, Jan

    Thrombosis and haemostasis

    2019  Volume 119, Issue 2, Page(s) 234–245

    Abstract: ... of haemophilia patients, to a monocyte cell line. The increase of leptin occurred in conjunction with C-reactive ...

    Abstract Macrophages make important contributions to inflammation and wound healing. We show here that macrophage polarization is deregulated in haemophilia in response to macrophage colony-stimulating factor (M-CSF) and partially in response to granulocyte-macrophage colony-stimulating factor (GM-CSF). As a result, haemophilia macrophages exhibit a specific impairment of M-CSF-mediated functions involved in wound healing such as clot invasion and phagocytosis. Haemophilia monocytes express reduced amounts of the receptors for M-CSF and GM-CSF, which correlates with a failure to express tumour necrosis factor α (TNFα) and CD163 in M-CSF-treated haemophilia macrophages and reduced expression of TNFα and CD206 after treatment with GM-CSF. Protein expression in response to M-CSF was regained with respect to CD163 and CD206 after embedding haemophilia monocytes in clotted plasma suggesting that a functioning coagulation system has positive effects on macrophage M2 polarization. Mimicking the functional deficits of haemophilia macrophages in normal macrophages was possible by adding leptin, which we found to be elevated in the blood of haemophilia patients, to a monocyte cell line. The increase of leptin occurred in conjunction with C-reactive protein in a body mass index-controlled cohort suggesting that haemophilia patients harbour chronic low-grade inflammation. Together, our data indicate that impaired clotting in haemophilia patients leads to increased inflammation and a deregulation in macrophage differentiation, which may explain the commonly observed deficits in wound healing and tissue regeneration.
    MeSH term(s) Adult ; Antigens, CD/metabolism ; Antigens, Differentiation, Myelomonocytic/metabolism ; Blood Circulation ; Blood Coagulation ; Cell Differentiation ; Cohort Studies ; Enzyme-Linked Immunosorbent Assay ; Erythrocytes/cytology ; Fibrin/metabolism ; Flow Cytometry ; Granulocyte-Macrophage Colony-Stimulating Factor/therapeutic use ; Hemophilia A/blood ; Hemophilia A/drug therapy ; Humans ; Lectins, C-Type/metabolism ; Leukocytes, Mononuclear/cytology ; Macrophage Colony-Stimulating Factor/therapeutic use ; Macrophages/cytology ; Male ; Mannose-Binding Lectins/metabolism ; Microscopy, Fluorescence ; Monocytes/cytology ; Phagocytosis ; Receptors, Cell Surface/metabolism ; Tumor Necrosis Factor-alpha/metabolism ; Young Adult
    Chemical Substances Antigens, CD ; Antigens, Differentiation, Myelomonocytic ; CD163 antigen ; Lectins, C-Type ; Mannose-Binding Lectins ; Receptors, Cell Surface ; Tumor Necrosis Factor-alpha ; mannose receptor ; Macrophage Colony-Stimulating Factor (81627-83-0) ; Granulocyte-Macrophage Colony-Stimulating Factor (83869-56-1) ; Fibrin (9001-31-4)
    Language English
    Publishing date 2019-01-16
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 518294-3
    ISSN 2567-689X ; 0340-6245
    ISSN (online) 2567-689X
    ISSN 0340-6245
    DOI 10.1055/s-0038-1676796
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Unspecific CTL Killing Is Enhanced by High Glucose

    Yang, Wenjuan / Denger, Andreas / Diener, Caroline / Küppers, Frederic / Soriano-Baguet, Leticia / Schäfer, Gertrud / Yanamandra, Archana K / Zhao, Renping / Knörck, Arne / Schwarz, Eva C / Hart, Martin / Lammert, Frank / Roma, Leticia Prates / Brenner, Dirk / Christidis, Grigorios / Helms, Volkhard / Meese, Eckart / Hoth, Markus / Qu, Bin

    Frontiers in immunology

    2022  Volume 13, Page(s) 831680

    Abstract: TNF-related apoptosis inducing ligand (TRAIL) is expressed on cytotoxic T lymphocytes (CTLs) and TRAIL is linked to progression of diabetes. However, the impact of high glucose on TRAIL expression and its related killing function in CTLs still remains ... ...

    Abstract TNF-related apoptosis inducing ligand (TRAIL) is expressed on cytotoxic T lymphocytes (CTLs) and TRAIL is linked to progression of diabetes. However, the impact of high glucose on TRAIL expression and its related killing function in CTLs still remains largely elusive. Here, we report that TRAIL is substantially up-regulated in CTLs in environments with high glucose (HG) both
    MeSH term(s) Glucose/metabolism ; Phosphatidylinositol 3-Kinases/metabolism ; Receptors, TNF-Related Apoptosis-Inducing Ligand/metabolism ; T-Lymphocytes, Cytotoxic/metabolism ; TNF-Related Apoptosis-Inducing Ligand/metabolism
    Chemical Substances Receptors, TNF-Related Apoptosis-Inducing Ligand ; TNF-Related Apoptosis-Inducing Ligand ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2022-02-21
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2022.831680
    Database MEDical Literature Analysis and Retrieval System OnLINE

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