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.journal","Glia"],["dc.bibliographiccitation.volume","61"],["dc.contributor.author","Janova, Hana"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","van Rossum, Denise"],["dc.contributor.author","Ribes, Sandra"],["dc.contributor.author","Goetz, Alexander A."],["dc.contributor.author","Nau, R."],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","Hanisch, U-K"],["dc.date.accessioned","2018-11-07T09:23:23Z"],["dc.date.available","2018-11-07T09:23:23Z"],["dc.date.issued","2013"],["dc.format.extent","S181"],["dc.identifier.isi","000320408400581"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29563"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.publisher.place","Hoboken"],["dc.relation.conference","11th European Meeting on Glial Cell Function in Health and Disease"],["dc.relation.eventlocation","Berlin, GERMANY"],["dc.relation.issn","0894-1491"],["dc.title","CD14 AS A KEY REGULATOR OF TLR-MEDIATED RESPONSES OF MICROGLIA"],["dc.type","conference_abstract"],["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.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.firstpage","1176"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Glia"],["dc.bibliographiccitation.lastpage","1185"],["dc.bibliographiccitation.volume","65"],["dc.contributor.author","Doering, Christin"],["dc.contributor.author","Regen, Tommy"],["dc.contributor.author","Gertig, Ulla"],["dc.contributor.author","van Rossum, Denise"],["dc.contributor.author","Winkler, Anne"],["dc.contributor.author","Saiepour, Nasrin"],["dc.contributor.author","Brueck, Wolfgang"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.contributor.author","Janova, Hana"],["dc.date.accessioned","2018-11-07T10:22:27Z"],["dc.date.available","2018-11-07T10:22:27Z"],["dc.date.issued","2017"],["dc.description.abstract","Microglia as principle innate immune cells of the central nervous system (CNS) are the first line of defense against invading pathogens. They are capable of sensing infections through diverse receptors, such as Toll-like receptor 4 (TLR4). This receptor is best known for its ability to recognize bacterial lipopolysaccharide (LPS), a causative agent of gram-negative sepsis and septic shock. A putative, naturally occurring antagonist of TLR4 derives from the photosynthetic bacterium Rhodobacter sphaeroides. However, the antagonistic potential of R. sphaeroides LPS (Rs-LPS) is no universal feature, since several studies suggested agonistic rather than antagonistic actions of this molecule depending on the investigated mammalian species. Here we show the agonistic versus antagonistic potential of Rs-LPS in primary mouse microglia. We demonstrate that Rs-LPS efficiently induces the release of cytokines and chemokines, which depends on TLR4, MyD88, and TRIF, but not CD14. Furthermore, Rs-LPS is able to regulate the phagocytic capacity of microglia as agonist, while it antagonizes Re-LPS-induced MHC I expression. Finally, to our knowledge, we are the first to provide in vivo evidence for an agonistic potential of Rs-LPS, as it efficiently triggers the recruitment of peripheral immune cells to the endotoxin-challenged CNS. Together, our results argue for a versatile and complex organization of the microglial TLR4 system, which specifically translates exogenous signals into cellular functions. Importantly, as demonstrated here for microglia, the antagonistic potential of Rs-LPS needs to be considered with caution, as reactions to Rs-LPS not only differ by cell type, but even by function within one cell type."],["dc.description.sponsorship","German Research Council (DFG) [SFB/TRR43, FOR1336]"],["dc.identifier.doi","10.1002/glia.23151"],["dc.identifier.isi","000401345400011"],["dc.identifier.pmid","28471051"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42277"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Wiley"],["dc.relation.issn","1098-1136"],["dc.relation.issn","0894-1491"],["dc.title","A presumed antagonistic LPS identifies distinct functional organization of TLR4 in mouse microglia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]