Regen, Tommy

[["dc.bibliographiccitation.firstpage","1083"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Glia"],["dc.bibliographiccitation.lastpage","1099"],["dc.bibliographiccitation.volume","63"],["dc.contributor.author","Menzfeld, Christiane"],["dc.contributor.author","John, Michael"],["dc.contributor.author","van Rossum, Denise"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Janova, Hana"],["dc.contributor.author","Goetz, Alexander A."],["dc.contributor.author","Ribes, Sandra"],["dc.contributor.author","Nau, Roland"],["dc.contributor.author","Borisch, Angela"],["dc.contributor.author","Boutin, Philippe"],["dc.contributor.author","Neumann, Konstantin"],["dc.contributor.author","Bremes, Vanessa"],["dc.contributor.author","Wienands, Juergen"],["dc.contributor.author","Reichardt, Holger Michael"],["dc.contributor.author","Luehder, Fred"],["dc.contributor.author","Tischner, Denise"],["dc.contributor.author","Waetzig, Vicky"],["dc.contributor.author","Herdegen, Thomas"],["dc.contributor.author","Teismann, Peter"],["dc.contributor.author","Greig, Iain"],["dc.contributor.author","Mueller, Michael"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Mildner, Alexander"],["dc.contributor.author","Kettenmann, Helmut"],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","Prinz, Marco R."],["dc.contributor.author","Rotshenker, Shlomo"],["dc.contributor.author","Weber, Martin S."],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.date.accessioned","2018-11-07T09:56:53Z"],["dc.date.available","2018-11-07T09:56:53Z"],["dc.date.issued","2015"],["dc.description.abstract","The putative protein tyrosine kinase (PTK) inhibitor tyrphostin AG126 has proven beneficial in various models of inflammatory disease. Yet molecular targets and cellular mechanisms remained enigmatic. We demonstrate here that AG126 treatment has beneficial effects in experimental autoimmune encephalomyelitis (EAE), a model for multiple sclerosis. AG126 alleviates the clinical symptoms, diminishes encephalitogenic Th17 differentiation, reduces inflammatory CNS infiltration as well as microglia activation and attenuates myelin damage. We show that AG126 directly inhibits Bruton's tyrosine kinase (BTK), a PTK associated with B cell receptor and Toll-like receptor (TLR) signaling. However, BTK inhibition cannot account for the entire activity spectrum. Effects on TLR-induced proinflammatory cytokine expression in microglia involve AG126 hydrolysis and conversion of its dinitrile side chain to malononitrile (MN). Notably, while liberated MN can subsequently mediate critical AG126 features, full protection in EAE still requires delivery of intact AG126. Its anti-inflammatory potential and especially interference with TLR signaling thus rely on a dual mechanism encompassing BTK and a novel MN-sensitive target. Both principles bear great potential for the therapeutic management of disturbed innate and adaptive immune functions. GLIA 2015;63:1083-1099"],["dc.identifier.doi","10.1002/glia.22803"],["dc.identifier.isi","000353244400011"],["dc.identifier.pmid","25731696"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37056"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1098-1136"],["dc.relation.issn","0894-1491"],["dc.title","Tyrphostin AG126 Exerts Neuroprotection in CNS Inflammation by a Dual Mechanism"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1930"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Glia"],["dc.bibliographiccitation.lastpage","1943"],["dc.bibliographiccitation.volume","60"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","van Rossum, Denise"],["dc.contributor.author","Seifert, Stefanie"],["dc.contributor.author","Ribes, Sandra"],["dc.contributor.author","Nau, Roland"],["dc.contributor.author","Parsa, Roham"],["dc.contributor.author","Harris, Robert A."],["dc.contributor.author","Boddeke, Hendrikus W. G. M."],["dc.contributor.author","Chuang, Han-Ning"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Wessels, Johannes Theodor"],["dc.contributor.author","Juergens, Tanja"],["dc.contributor.author","Merkler, Doron"],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","Schnaars, Mareike"],["dc.contributor.author","Simons, Mikael"],["dc.contributor.author","Kettenmann, Helmut"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.date.accessioned","2018-11-07T09:03:06Z"],["dc.date.available","2018-11-07T09:03:06Z"],["dc.date.issued","2012"],["dc.description.abstract","The sentinel and immune functions of microglia require rapid and appropriate reactions to infection and damage. Their Toll-like receptors (TLRs) sense both as threats. However, whether activated microglia mount uniform responses or whether subsets conduct selective tasks is unknown. We demonstrate that murine microglia reorganize their responses to TLR activations postnatally and that this process comes with a maturation of TLR4-organized functions. Although induction of MHCI for antigen presentation remains as a pan-populational feature, synthesis of TNFa becomes restricted to a subset, even within adult central nervous system regions. Response heterogeneity is evident ex vivo, in situ, and in vivo, but is not limited to TNFa production or to TLR-triggered functions. Also, clearance activities for myelin under physiological and pathophysiological conditions, IFN >> factors reveal dissimilar microglial contributions. Notably, response heterogeneity is also confirmed in human brain tissue. Our findings suggest that microglia divide by constitutive and inducible capacities. Privileged production of inflammatory mediators assigns a master control to subsets. Sequestration of clearance of endogenous material versus antigen presentation in exclusive compartments can separate potentially interfering functions. Finally, subsets rather than a uniform population of microglia may assemble the reactive phenotypes in responses during infection, injury, and rebuilding, warranting consideration in experimental manipulation and therapeutic strategies. (c) 2012 Wiley Periodicals, Inc."],["dc.identifier.doi","10.1002/glia.22409"],["dc.identifier.isi","000310262600010"],["dc.identifier.pmid","22911652"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24833"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","0894-1491"],["dc.title","Toll-like receptor activation reveals developmental reorganization and unmasks responder subsets of microglia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Cytokine"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Rossum van, Denise"],["dc.contributor.author","Weinstein, Jonathan R."],["dc.contributor.author","Dihazi, Hassan"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","Kettenmann, Helmut"],["dc.contributor.author","Prinz, Marco R."],["dc.contributor.author","Moeller, Thomas"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.date.accessioned","2018-11-07T11:11:15Z"],["dc.date.available","2018-11-07T11:11:15Z"],["dc.date.issued","2008"],["dc.format.extent","315"],["dc.identifier.doi","10.1016/j.cyto.2008.07.386"],["dc.identifier.isi","000260212900351"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/53386"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Academic Press Ltd Elsevier Science Ltd"],["dc.publisher.place","London"],["dc.relation.conference","7th Joint Conference of the International-Cytokine-Society/International-Society-for-Interferon-and- Cytoklin-Research"],["dc.relation.eventlocation","Montreal, CANADA"],["dc.relation.issn","1043-4666"],["dc.title","Toll-like receptor 4/MyD88 pathway mediates microglial proinflammatory cytokine responses to thrombin-associated coagulation protein complexes"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","367"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Glia"],["dc.bibliographiccitation.lastpage","376"],["dc.bibliographiccitation.volume","58"],["dc.contributor.author","Ribes, Sandra"],["dc.contributor.author","Ebert, Sandra"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","Czesnik, Dirk"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Zeug, Andre"],["dc.contributor.author","Bunkowski, Stephanie"],["dc.contributor.author","Eiffert, Helmut"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.contributor.author","Hammerschmidt, Sven"],["dc.contributor.author","Nau, Roland"],["dc.date.accessioned","2018-11-07T08:46:15Z"],["dc.date.available","2018-11-07T08:46:15Z"],["dc.date.issued","2010"],["dc.description.abstract","Microglia express Toll-like receptors (TLRs) that recognize invading pathogens as well as endogenous proteins such as fibronectin under nonphysiological conditions. Here, we demonstrated that fibronectin stimulates murine microglia in culture in a dose-dependent manner: microglial cells secreted proinflammatory cytokines and chemokines and increased phagocytosis of Escherichia coli DH5 alpha and E. coli K1 strains. Low levels of fibronectin exerted a synergistic effect on the release of proinflammatory compounds by microglia co-stimulated with agonists for TLR1/2 (Pam(3)CSK(4)) or TLR9 (CpG DNA), but not in combination with the TLR4 agonist lipopolysaccharide (LPS). Phagocytosis of bacterial strains was moderately enhanced when microglia was co-stimulated with high concentrations of fibronectin and one pathogen-derived TLR agonist. In conclusion, fibronectin increased proinflammatory and phagocytotic functions in microglia and partially synergized with microbial TLR agonists. (C) 2009 Wiley-Liss, Inc."],["dc.identifier.doi","10.1002/glia.20929"],["dc.identifier.isi","000273189600009"],["dc.identifier.pmid","19780198"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20644"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-liss"],["dc.relation.issn","0894-1491"],["dc.title","Fibronectin Stimulates Escherichia coli Phagocytosis by Microglial Cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Glia"],["dc.bibliographiccitation.volume","59"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","van Rossum, Denise"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Kastriti, Maria-Eleni"],["dc.contributor.author","Revelo, Natalia H."],["dc.contributor.author","Janova, Hana"],["dc.contributor.author","Borisch, Angela"],["dc.contributor.author","Prinz, Marco R."],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.date.accessioned","2018-11-07T08:51:34Z"],["dc.date.available","2018-11-07T08:51:34Z"],["dc.date.issued","2011"],["dc.format.extent","S148"],["dc.identifier.isi","000294178900582"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21965"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.publisher.place","Malden"],["dc.relation.issn","0894-1491"],["dc.title","CD14 AND TRIF GOVERN DISTINCT RESPONSIVENESS AND RESPONSES IN MOUSE MICROGLIAL TLR4 CHALLENGES BY STRUCTURAL VARIANTS OF LPS"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","957"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Brain Behavior and Immunity"],["dc.bibliographiccitation.lastpage","970"],["dc.bibliographiccitation.volume","25"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","van Rossum, Denise"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Kastriti, Maria-Eleni"],["dc.contributor.author","Revelo, Natalia H."],["dc.contributor.author","Prinz, Marco R."],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.date.accessioned","2018-11-07T08:54:45Z"],["dc.date.available","2018-11-07T08:54:45Z"],["dc.date.issued","2011"],["dc.description.abstract","Toll-like receptor (TLR) 4 responds to a range of agonists in infection and injury, but is best known for the recognition of bacterial lipopolysaccharides (LPS). Assembly in heterologous receptor complexes as well as signaling through both MyD88 and TRIF adaptor proteins, as unmatched by other TLRs, could underlie its versatile response options, probably also in a cell type-dependent manner. We show that microglia, the CNS macrophages, react to diverse LPS variants, including smooth (S) and rough (R) LPS chemotypes, with cytokine/chemokine induction, MHC I expression and suppression of myelin phagocytosis. The TLR4 co-receptor CD14 was shown in peritoneal macrophages to be essential for S-LPS effects and the link of both S- and R-LPS to TRIF signaling. In contrast, cd14(-/-) microglia readily respond to S- and R-LPS, suggesting an a priori high(er) sensitivity to both chemotypes, while CD14 confers increased S- and R-LPS potencies and compensates for their differences. Importantly, CD14 controls the magnitude and shapes the profile of cyto/chemokine production, this influence being itself regulated by critical LPS concentrations. Comparing reactive phenotypes of microglia with deficiencies in CD14, MyD88 and TRIF (cd14(-/-) myd88(-/-), and trif(dPs2)), we found that distinct signaling routes organize for individual functions in either concerted or non-redundant fashion and that CD14 has contributions beyond the link to TRIP. Modulation of response profiles by key cytokines finally reveals that the microglial TLR4 can differentiate between the class of LPS structures and a self-derived agonist, fibronectin. It thus proves as a sophisticated decision maker in infectious and non-infectious CNS challenges. (C) 2010 Elsevier Inc. All rights reserved."],["dc.description.sponsorship","German Research Council (DFG) [SFB/TRR43]; [FOR942]; [FOR1336]"],["dc.identifier.doi","10.1016/j.bbi.2010.10.009"],["dc.identifier.isi","000291836600017"],["dc.identifier.pmid","20951794"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22739"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Academic Press Inc Elsevier Science"],["dc.relation.issn","0889-1591"],["dc.title","CD14 and TRIF govern distinct responsiveness and responses in mouse microglial TLR4 challenges by structural variants of LPS"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Glia"],["dc.bibliographiccitation.volume","57"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Wessels, Johannes Theodor"],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","van Rossum, D."],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.date.accessioned","2018-11-07T11:23:41Z"],["dc.date.available","2018-11-07T11:23:41Z"],["dc.date.issued","2009"],["dc.format.extent","S132"],["dc.identifier.isi","000270075500547"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56241"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-liss"],["dc.publisher.place","Hoboken"],["dc.relation.conference","9th European Meeting on Glial Cells in Health and Disease"],["dc.relation.eventlocation","Paris, FRANCE"],["dc.relation.issn","0894-1491"],["dc.title","FUNCTIONAL EX VIVO ANALYSIS OF MOUSE MICROGLIA REVEALS DEVELOPMENTAL PROFILES IN RESPONSES TO TOLL-LIKE RECEPTOR (TLR) STIMULATION FROM BIRTH TO ADULTHOOD"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","212"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA"],["dc.bibliographiccitation.lastpage","217"],["dc.bibliographiccitation.volume","113"],["dc.contributor.author","Papageorgiou, Ismini E."],["dc.contributor.author","Lewen, Andrea"],["dc.contributor.author","Galow, Lukas V."],["dc.contributor.author","Cesetti, Tiziana"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.contributor.author","Kann, Oliver"],["dc.date.accessioned","2018-11-07T10:19:29Z"],["dc.date.available","2018-11-07T10:19:29Z"],["dc.date.issued","2016"],["dc.description.abstract","Microglia (tissue-resident macrophages) represent the main cell type of the innate immune system in the CNS; however, the mechanisms that control the activation of microglia are widely unknown. We systematically explored microglial activation and functional microglia-neuron interactions in organotypic hippocampal slice cultures, i.e., postnatal cortical tissue that lacks adaptive immunity. We applied electrophysiological recordings of local field potential and extracellular K+ concentration, immunohistochemistry, design-based stereology, morphometry, Sholl analysis, and biochemical analyses. We show that chronic activation with either bacterial lipopolysaccharide through Toll-like receptor 4 (TLR4) or leukocyte cytokine IFN-gamma induces reactive phenotypes in microglia associated with morphological changes, population expansion, CD11b and CD68 up-regulation, and proinflammatory cytokine (IL-1 beta, TNF-alpha, IL-6) and nitric oxide (NO) release. Notably, these reactive phenotypes only moderately alter intrinsic neuronal excitability and gamma oscillations (30-100 Hz), which emerge from precise synaptic communication of glutamatergic pyramidal cells and fast-spiking, parvalbumin-positive GABAergic interneurons, in local hippocampal networks. Short-term synaptic plasticity and extracellular potassium homeostasis during neural excitation, also reflecting astrocyte function, are unaffected. In contrast, the coactivation of TLR4 and IFN-gamma receptors results in neuronal dysfunction and death, caused mainly by enhanced microglial inducible nitric oxide synthase (iNOS) expression and NO release, because iNOS inhibition is neuroprotective. Thus, activation of TLR4 in microglia in situ requires concomitant IFN-gamma receptor signaling from peripheral immune cells, such as T helper type 1 and natural killer cells, to unleash neurotoxicity and inflammation-induced neurodegeneration. Our findings provide crucial mechanistic insight into the complex process of microglia activation, with relevance to several neurologic and psychiatric disorders."],["dc.description.sponsorship","German Research Foundation [SFB/TRR43, FOR1336]"],["dc.identifier.doi","10.1073/pnas.1513853113"],["dc.identifier.isi","000367520400058"],["dc.identifier.pmid","26699475"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41667"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Natl Acad Sciences"],["dc.relation.issn","0027-8424"],["dc.title","TLR4-activated microglia require IFN-gamma to induce severe neuronal dysfunction and death in situ"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Glia"],["dc.bibliographiccitation.volume","57"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","van Rossum, D."],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.date.accessioned","2018-11-07T11:23:41Z"],["dc.date.available","2018-11-07T11:23:41Z"],["dc.date.issued","2009"],["dc.format.extent","S126"],["dc.identifier.isi","000270075500524"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56242"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-liss"],["dc.publisher.place","Hoboken"],["dc.relation.conference","9th European Meeting on Glial Cells in Health and Disease"],["dc.relation.eventlocation","Paris, FRANCE"],["dc.relation.issn","0894-1491"],["dc.title","PLASMA FIBRONECTIN - AN ENDOGENOUS DAMP SIGNAL FOR TOLL-LIKE RECEPTOR 4 ON MICROGLIAL CELLS"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]