@article{DietrichKrugKrastletal.2019, author = {Dietrich, Thomas and Krug, Ralf and Krastl, Gabriel and Tomson, Philip L.}, title = {Restoring the unrestorable! Developing coronal tooth tissue with a minimally invasive surgical extrusion technique}, series = {British Dental Journal}, volume = {226}, journal = {British Dental Journal}, doi = {10.1038/s41415-019-0268-9}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-225333}, pages = {789-793}, year = {2019}, abstract = {Surgical extrusion is a recognised treatment option for teeth that have insufficient coronal tooth structure remaining due to deep caries, resorption or traumatic injury. However, the technique has not been widely adopted, arguably because extraction of a severely compromised tooth may be difficult to achieve in a gentle and predictable way. In this paper, we present our novel approach to surgical extrusion and subsequent management of teeth using a vertical extraction system (Benex), which has become the method of choice in the authors' practice for many teeth that would otherwise be deemed unrestorable. We describe the clinical procedure in detail and discuss the advantages and disadvantages compared to alternative approaches, including surgical crown lengthening and orthodontic extrusion.}, language = {en} } @article{FanEbnerReichertetal.2019, author = {Fan, Sook-Ha and Ebner, Patrick and Reichert, Sebstian and Hertlein, Tobias and Zabel, Susanne and Lankapalli, Aditya Kumar and Nieselt, Kay and Ohlsen, Knut and G{\"o}tz, Friedrich}, title = {MpsAB is important for Staphylococcus aureus virulence and growth at atmospheric CO2 levels}, series = {Nature Communications}, volume = {10}, journal = {Nature Communications}, doi = {10.1038/s41467-019-11547-5}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-227624}, year = {2019}, abstract = {The mechanisms behind carbon dioxide (CO2) dependency in non-autotrophic bacterial isolates are unclear. Here we show that the Staphylococcus aureus mpsAB operon, known to play a role in membrane potential generation, is crucial for growth at atmospheric CO2 levels. The genes mpsAB can complement an Escherichia coli carbonic anhydrase (CA) mutant, and CA from E. coli can complement the S. aureus delta-mpsABC mutant. In comparison with the wild type, S. aureus mps mutants produce less hemolytic toxin and are less virulent in animal models of infection. Homologs of mpsA and mpsB are widespread among bacteria and are often found adjacent to each other on the genome. We propose that MpsAB represents a dissolved inorganic carbon transporter, or bicarbonate concentrating system, possibly acting as a sodium bicarbonate cotransporter.}, language = {en} } @article{FerreiraGamazonAlEjehetal.2019, author = {Ferreira, Manuel A. and Gamazon, Eric R. and Al-Ejeh, Fares and Aittom{\"a}ki, Kristiina and Andrulis, Irene L. and Anton-Culver, Hoda and Arason, Adalgeir and Arndt, Volker and Aronson, Kristan J. and Arun, Banu K. and Asseryanis, Ella and Azzollini, Jacopo and Balma{\~n}a, Judith and Barnes, Daniel R. and Barrowdale, Daniel and Beckmann, Matthias W. and Behrens, Sabine and Benitez, Javier and Bermisheva, Marina and Bialkowska, Katarzyna and Blomqvist, Carl and Bogdanova, Natalia V. and Bojesen, Stig E. and Bolla, Manjeet K. and Borg, Ake and Brauch, Hiltrud and Brenner, Hermann and Broeks, Annegien and Burwinkel, Barbara and Cald{\´e}s, Trinidad and Caligo, Maria A. and Campa, Daniele and Campbell, Ian and Canzian, Federico and Carter, Jonathan and Carter, Brian D. and Castelao, Jose E. and Chang-Claude, Jenny and Chanock, Stephen J. and Christiansen, Hans and Chung, Wendy K. and Claes, Kathleen B. M. and Clarke, Christine L. and Couch, Fergus J. and Cox, Angela and Cross, Simon S. and Czene, Kamila and Daly, Mary B. and de la Hoya, Miguel and Dennis, Joe and Devilee, Peter and Diez, Orland and D{\"o}rk, Thilo and Dunning, Alison M. and Dwek, Miriam and Eccles, Diana M. and Ejlertsen, Bent and Ellberg, Carolina and Engel, Christoph and Eriksson, Mikael and Fasching, Peter A. and Fletcher, Olivia and Flyger, Henrik and Friedman, Eitan and Frost, Debra and Gabrielson, Marike and Gago-Dominguez, Manuela and Ganz, Patricia A. and Gapstur, Susan M. and Garber, Judy and Garc{\´i}a-Closas, Montserrat and Garc{\´i}a-S{\´a}enz, Jos{\´e} A. and Gaudet, Mia M. and Giles, Graham G. and Glendon, Gord and Godwin, Andrew K. and Goldberg, Mark S. and Goldgar, David E. and Gonz{\´a}lez-Neira, Anna and Greene, Mark H. and Gronwald, Jacek and Guen{\´e}l, Pascal and Haimann, Christopher A. and Hall, Per and Hamann, Ute and He, Wei and Heyworth, Jane and Hogervorst, Frans B. L. and Hollestelle, Antoinette and Hoover, Robert N. and Hopper, John L. and Hulick, Peter J. and Humphreys, Keith and Imyanitov, Evgeny N. and Isaacs, Claudine and Jakimovska, Milena and Jakubowska, Anna and James, Paul A. and Janavicius, Ramunas and Jankowitz, Rachel C. and John, Esther M. and Johnson, Nichola and Joseph, Vijai and Karlan, Beth Y. and Khusnutdinova, Elza and Kiiski, Johanna I. and Ko, Yon-Dschun and Jones, Michael E. and Konstantopoulou, Irene and Kristensen, Vessela N. and Laitman, Yael and Lambrechts, Diether and Lazaro, Conxi and Leslie, Goska and Lester, Jenny and Lesueur, Fabienne and Lindstr{\"o}m, Sara and Long, Jirong and Loud, Jennifer T. and Lubiński, Jan and Makalic, Enes and Mannermaa, Arto and Manoochehri, Mehdi and Margolin, Sara and Maurer, Tabea and Mavroudis, Dimitrios and McGuffog, Lesley and Meindl, Alfons and Menon, Usha and Michailidou, Kyriaki and Miller, Austin and Montagna, Marco and Moreno, Fernando and Moserle, Lidia and Mulligan, Anna Marie and Nathanson, Katherine L. and Neuhausen, Susan L. and Nevanlinna, Heli and Nevelsteen, Ines and Nielsen, Finn C. and Nikitina-Zake, Liene and Nussbaum, Robert L. and Offit, Kenneth and Olah, Edith and Olopade, Olufunmilayo I. and Olsson, H{\aa}kan and Osorio, Ana and Papp, Janos and Park-Simon, Tjoung-Won and Parsons, Michael T. and Pedersen, Inge Sokilde and Peixoto, Ana and Peterlongo, Paolo and Pharaoh, Paul D. P. and Plaseska-Karanfilska, Dijana and Poppe, Bruce and Presneau, Nadege and Radice, Paolo and Rantala, Johanna and Rennert, Gad and Risch, Harvey A. and Saloustros, Emmanouil and Sanden, Kristin and Sawyer, Elinor J. and Schmidt, Marjanka K. and Schmutzler, Rita K. and Sharma, Priyanka and Shu, Xiao-Ou and Simard, Jaques and Singer, Christian F. and Soucy, Penny and Southey, Melissa C. and Spinelli, John J. and Spurdle, Amanda B. and Stone, Jennifer and Swerdlow, Anthony J. and Tapper, William J. and Taylor, Jack A. and Teixeira, Manuel R. and Terry, Mary Beth and Teul{\´e}, Alex and Thomassen, Mads and Th{\"o}ne, Kathrin and Thull, Darcy L. and Tischkowitz, Marc and Toland, Amanda E. and Torres, Diana and Truong, Th{\´e}r{\`e}se and Tung, Nadine and Vachon, Celine M. and van Asperen, Christi J. and van den Ouweland, Ans M. W. and van Rensburg, Elizabeth J. and Vega, Ana and Viel, Alexandra and Wang, Qin and Wappenschmidt, Barbara and Weitzel, Jeffrey N. and Wendt, Camilla and Winqvist, Robert and Yang, Xiaohong R. and Yannoukakos, Drakoulis and Ziogas, Argyrios and Kraft, Peter and Antoniou, Antonis C. and Zheng, Wei and Easton, Douglas F. and Milne, Roger L. and Beesley, Jonathan and Chenevix-Trench, Georgia}, title = {Genome-wide association and transcriptome studies identify target genes and risk loci for breast cancer}, series = {Nature Communications}, volume = {10}, journal = {Nature Communications}, organization = {EMBRACE Collaborators, GC-HBOC Study Collaborators, GEMO Study Collaborators, ABCTB Investigators, HEBON Investigators, BCFR Investigators}, doi = {10.1038/s41467-018-08053-5}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-228024}, year = {2019}, abstract = {Genome-wide association studies (GWAS) have identified more than 170 breast cancer susceptibility loci. Here we hypothesize that some risk-associated variants might act in non-breast tissues, specifically adipose tissue and immune cells from blood and spleen. Using expression quantitative trait loci (eQTL) reported in these tissues, we identify 26 previously unreported, likely target genes of overall breast cancer risk variants, and 17 for estrogen receptor (ER)-negative breast cancer, several with a known immune function. We determine the directional effect of gene expression on disease risk measured based on single and multiple eQTL. In addition, using a gene-based test of association that considers eQTL from multiple tissues, we identify seven (and four) regions with variants associated with overall (and ER-negative) breast cancer risk, which were not reported in previous GWAS. Further investigation of the function of the implicated genes in breast and immune cells may provide insights into the etiology of breast cancer.}, language = {en} } @article{HauerPoppTaheretal.2019, author = {Hauer, Nadine N. and Popp, Bernt and Taher, Leila and Vogl, Carina and Dhandapany, Perundurai S. and B{\"u}ttner, Christian and Uebe, Steffen and Sticht, Heinrich and Ferrazzi, Fulvia and Ekici, Arif B. and De Luca, Alessandro and Klinger, Patrizia and Kraus, Cornelia and Zweier, Christiane and Wiesener, Antje and Abou Jamra, Rami and Kunstmann, Erdmute and Rauch, Anita and Wieczorek, Dagmar and Jung, Anna-Marie and Rohrer, Tilman R. and Zenker, Martin and Doerr, Helmuth-Guenther and Reis, Andr{\´e} and Thiel, Christian T.}, title = {Evolutionary conserved networks of human height identify multiple Mendelian causes of short stature}, series = {European Journal of Human Genetics}, volume = {27}, journal = {European Journal of Human Genetics}, doi = {10.1038/s41431-019-0362-0}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-227899}, pages = {1061-1071}, year = {2019}, abstract = {Height is a heritable and highly heterogeneous trait. Short stature affects 3\% of the population and in most cases is genetic in origin. After excluding known causes, 67\% of affected individuals remain without diagnosis. To identify novel candidate genes for short stature, we performed exome sequencing in 254 unrelated families with short stature of unknown cause and identified variants in 63 candidate genes in 92 (36\%) independent families. Based on systematic characterization of variants and functional analysis including expression in chondrocytes, we classified 13 genes as strong candidates. Whereas variants in at least two families were detected for all 13 candidates, two genes had variants in 6 (UBR4) and 8 (LAMA5) families, respectively. To facilitate their characterization, we established a clustered network of 1025 known growth and short stature genes, which yielded 29 significantly enriched clusters, including skeletal system development, appendage development, metabolic processes, and ciliopathy. Eleven of the candidate genes mapped to 21 of these clusters, including CPZ, EDEM3, FBRS, IFT81, KCND1, PLXNA3, RASA3, SLC7A8, UBR4, USP45, and ZFHX3. Fifty additional growth-related candidates we identified await confirmation in other affected families. Our study identifies Mendelian forms of growth retardation as an important component of idiopathic short stature.}, language = {en} } @article{GotruvanGeffenNagyetal.2019, author = {Gotru, Sanjeev Kiran and van Geffen, Johanna P. and Nagy, Magdolna and Mammadova-Bach, Elmina and Eilenberger, Julia and Volz, Julia and Manukjan, Georgi and Schulze, Harald and Wagner, Leonard and Eber, Stefan and Schambeck, Christian and Deppermann, Carsten and Brouns, Sanne and Nurden, Paquita and Greinacher, Andreas and Sachs, Ulrich and Nieswandt, Bernhard and Hermanns, Heike M. and Heemskerk, Johan W. M. and Braun, Attila}, title = {Defective Zn2+ homeostasis in mouse and human platelets with α- and δ-storage pool diseases}, series = {Scientific Reports}, volume = {9}, journal = {Scientific Reports}, doi = {10.1038/s41598-019-44751-w}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-227455}, year = {2019}, abstract = {Zinc (Zn2+) can modulate platelet and coagulation activation pathways, including fibrin formation. Here, we studied the (patho)physiological consequences of abnormal platelet Zn2+ storage and release. To visualize Zn2+ storage in human and mouse platelets, the Zn2+ specific fluorescent dye FluoZin3 was used. In resting platelets, the dye transiently accumulated into distinct cytosolic puncta, which were lost upon platelet activation. Platelets isolated from Unc13d-/- mice, characterized by combined defects of α/δ granular release, showed a markedly impaired Zn2+ release upon activation. Platelets from Nbeal2-/- mice mimicking Gray platelet syndrome (GPS), characterized by primarily loss of the α-granule content, had strongly reduced Zn2+ levels, which was also confirmed in primary megakaryocytes. In human platelets isolated from patients with GPS, Hermansky-Pudlak Syndrome (HPS) and Storage Pool Disease (SPD) altered Zn2+ homeostasis was detected. In turbidity and flow based assays, platelet-dependent fibrin formation was impaired in both Nbeal2-/- and Unc13d-/- mice, and the impairment could be partially restored by extracellular Zn2+. Altogether, we conclude that the release of ionic Zn2+ store from secretory granules upon platelet activation contributes to the procoagulant role of Zn2+ in platelet-dependent fibrin formation.}, language = {en} } @article{HarnošCanizalJuraseketal.2019, author = {Harnoš, Jakub and Ca{\~n}izal, Maria Consuelo Alonso and Jur{\´a}sek, Miroslav and Kumar, Jitender and Holler, Cornelia and Schambony, Alexandra and Han{\´a}kov{\´a}, Kateřina and Bernat{\´i}k, Ondřej and Zdr{\´a}hal, Zbyn{\^e}k and G{\"o}m{\"o}ryov{\´a}, Krist{\´i}na and Gybeľ, Tom{\´a}š and Radaszkiewicz, Tomasz Witold and Kravec, Marek and Trant{\´i}rek, Luk{\´a}š and Ryneš, Jan and Dave, Zankruti and Fern{\´a}ndez-Llamazares, Ana Iris and V{\´a}cha, Robert and Tripsianes, Konstantinos and Hoffmann, Carsten and Bryja, V{\´i}tězslav}, title = {Dishevelled-3 conformation dynamics analyzed by FRET-based biosensors reveals a key role of casein kinase 1}, series = {Nature Communications}, volume = {10}, journal = {Nature Communications}, doi = {10.1038/s41467-019-09651-7}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-227837}, year = {2019}, abstract = {Dishevelled (DVL) is the key component of the Wnt signaling pathway. Currently, DVL conformational dynamics under native conditions is unknown. To overcome this limitation, we develop the Fluorescein Arsenical Hairpin Binder- (FlAsH-) based FRET in vivo approach to study DVL conformation in living cells. Using this single-cell FRET approach, we demonstrate that (i) Wnt ligands induce open DVL conformation, (ii) DVL variants that are predominantly open, show more even subcellular localization and more efficient membrane recruitment by Frizzled (FZD) and (iii) Casein kinase 1 ɛ (CK1ɛ) has a key regulatory function in DVL conformational dynamics. In silico modeling and in vitro biophysical methods explain how CK1ɛ-specific phosphorylation events control DVL conformations via modulation of the PDZ domain and its interaction with DVL C-terminus. In summary, our study describes an experimental tool for DVL conformational sampling in living cells and elucidates the essential regulatory role of CK1ɛ in DVL conformational dynamics.}, language = {en} } @article{GottschalkRichterZiegleretal.2019, author = {Gottschalk, Michael G. and Richter, Jan and Ziegler, Christiane and Schiele, Miriam A. and Mann, Julia and Geiger, Maximilian J. and Schartner, Christoph and Homola, Gy{\"o}rgy A. and Alpers, Georg W. and B{\"u}chel, Christian and Fehm, Lydia and Fydrich, Thomas and Gerlach, Alexander L. and Gloster, Andrew T. and Helbig-Lang, Sylvia and Kalisch, Raffael and Kircher, Tilo and Lang, Thomas and Lonsdorf, Tina B. and Pan{\´e}-Farr{\´e}, Christiane A. and Str{\"o}hle, Andreas and Weber, Heike and Zwanzger, Peter and Arolt, Volker and Romanos, Marcel and Wittchen, Hans-Ulrich and Hamm, Alfons and Pauli, Paul and Reif, Andreas and Deckert, J{\"u}rgen and Neufang, Susanne and H{\"o}fler, Michael and Domschke, Katharina}, title = {Orexin in the anxiety spectrum: association of a HCRTR1 polymorphism with panic disorder/agoraphobia, CBT treatment response and fear-related intermediate phenotypes}, series = {Translational Psychiatry}, volume = {9}, journal = {Translational Psychiatry}, doi = {10.1038/s41398-019-0415-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-227479}, year = {2019}, abstract = {Preclinical studies point to a pivotal role of the orexin 1 (OX1) receptor in arousal and fear learning and therefore suggest the HCRTR1 gene as a prime candidate in panic disorder (PD) with/without agoraphobia (AG), PD/AG treatment response, and PD/AG-related intermediate phenotypes. Here, a multilevel approach was applied to test the non-synonymous HCRTR1 C/T Ile408Val gene variant (rs2271933) for association with PD/AG in two independent case-control samples (total n = 613 cases, 1839 healthy subjects), as an outcome predictor of a six-weeks exposure-based cognitive behavioral therapy (CBT) in PD/AG patients (n = 189), as well as with respect to agoraphobic cognitions (ACQ) (n = 483 patients, n = 2382 healthy subjects), fMRI alerting network activation in healthy subjects (n = 94), and a behavioral avoidance task in PD/AG pre- and post-CBT (n = 271). The HCRTR1 rs2271933 T allele was associated with PD/AG in both samples independently, and in their meta-analysis (p = 4.2 × 10-7), particularly in the female subsample (p = 9.8 × 10-9). T allele carriers displayed a significantly poorer CBT outcome (e.g., Hamilton anxiety rating scale: p = 7.5 × 10-4). The T allele count was linked to higher ACQ sores in PD/AG and healthy subjects, decreased inferior frontal gyrus and increased locus coeruleus activation in the alerting network. Finally, the T allele count was associated with increased pre-CBT exposure avoidance and autonomic arousal as well as decreased post-CBT improvement. In sum, the present results provide converging evidence for an involvement of HCRTR1 gene variation in the etiology of PD/AG and PD/AG-related traits as well as treatment response to CBT, supporting future therapeutic approaches targeting the orexin-related arousal system.}, language = {en} } @article{GiampaoloWojcikKleinHesslingetal.2019, author = {Giampaolo, Sabrina and W{\´o}jcik, Gabriela and Klein-Hessling, Stefan and Serfling, Edgar and Patra, Amiya K.}, title = {B cell development is critically dependent on NFATc1 activity}, series = {Cellular \& Molecular Immunology}, volume = {16}, journal = {Cellular \& Molecular Immunology}, doi = {10.1038/s41423-018-0052-9}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-233006}, pages = {508-520}, year = {2019}, abstract = {B cell development in bone marrow is a precisely regulated complex process. Through successive stages of differentiation, which are regulated by a multitude of signaling pathways and an array of lineage-specific transcription factors, the common lymphoid progenitors ultimately give rise to mature B cells. Similar to early thymocyte development in the thymus, early B cell development in bone marrow is critically dependent on IL-7 signaling. During this IL-7-dependent stage of differentiation, several transcription factors, such as E2A, EBF1, and Pax5, among others, play indispensable roles in B lineage specification and maintenance. Although recent studies have implicated several other transcription factors in B cell development, the role of NFATc1 in early B cell developmental stages is not known. Here, using multiple gene-manipulated mouse models and applying various experimental methods, we show that NFATc1 activity is vital for early B cell differentiation. Lack of NFATc1 activity in pro-B cells suppresses EBF1 expression, impairs immunoglobulin gene rearrangement, and thereby preBCR formation, resulting in defective B cell development. Overall, deficiency in NFATc1 activity arrested the pro-B cell transition to the pre-B cell stage, leading to severe B cell lymphopenia. Our findings suggest that, along with other transcription factors, NFATc1 is a critical component of the signaling mechanism that facilitates early B cell differentiation.}, language = {en} } @article{BelicPageLazariotouetal.2019, author = {Belic, Stanislav and Page, Lukas and Lazariotou, Maria and Waaga-Gasser, Ana Maria and Dragan, Mariola and Springer, Jan and Loeffler, Juergen and Morton, Charles Oliver and Einsele, Hermann and Ullmann, Andrew J. and Wurster, Sebastian}, title = {Comparative Analysis of Inflammatory Cytokine Release and Alveolar Epithelial Barrier Invasion in a Transwell® Bilayer Model of Mucormycosis}, series = {Frontiers in Microbiology}, volume = {9}, journal = {Frontiers in Microbiology}, doi = {10.3389/fmicb.2018.03204}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-252477}, year = {2019}, abstract = {Understanding the mechanisms of early invasion and epithelial defense in opportunistic mold infections is crucial for the evaluation of diagnostic biomarkers and novel treatment strategies. Recent studies revealed unique characteristics of the immunopathology of mucormycoses. We therefore adapted an alveolar Transwell® A549/HPAEC bilayer model for the assessment of epithelial barrier integrity and cytokine response to Rhizopus arrhizus, Rhizomucor pusillus, and Cunninghamella bertholletiae. Hyphal penetration of the alveolar barrier was validated by 18S ribosomal DNA detection in the endothelial compartment. Addition of dendritic cells (moDCs) to the alveolar compartment led to reduced fungal invasion and strongly enhanced pro-inflammatory cytokine response, whereas epithelial CCL2 and CCL5 release was reduced. Despite their phenotypic heterogeneity, the studied Mucorales species elicited the release of similar cytokine patterns by epithelial and dendritic cells. There were significantly elevated lactate dehydrogenase concentrations in the alveolar compartment and epithelial barrier permeability for dextran blue of different molecular weights in Mucorales-infected samples compared to Aspergillus fumigatus infection. Addition of monocyte-derived dendritic cells further aggravated LDH release and epithelial barrier permeability, highlighting the influence of the inflammatory response in mucormycosis-associated tissue damage. An important focus of this study was the evaluation of the reproducibility of readout parameters in independent experimental runs. Our results revealed consistently low coefficients of variation for cytokine concentrations and transcriptional levels of cytokine genes and cell integrity markers. As additional means of model validation, we confirmed that our bilayer model captures key principles of Mucorales biology such as accelerated growth in a hyperglycemic or ketoacidotic environment or reduced epithelial barrier invasion upon epithelial growth factor receptor blockade by gefitinib. Our findings indicate that the Transwell® bilayer model provides a reliable and reproducible tool for assessing host response in mucormycosis.}, language = {en} } @article{KnopSpilgiesRuflietal.2019, author = {Knop, Janin and Spilgies, Lisanne M. and Rufli, Stefanie and Reinhart, Ramona and Vasilikos, Lazaros and Yabal, Monica and Owsley, Erika and Jost, Philipp J. and Marsh, Rebecca A. and Wajant, Harald and Robinson, Mark D. and Kaufmann, Thomas and W. Wei-Lynn, Wong}, title = {TNFR2 induced priming of the inflammasome leads to a RIPK1-dependent cell death in the absence of XIAP}, series = {Cell Death \& Disease}, volume = {10}, journal = {Cell Death \& Disease}, doi = {10.1038/s41419-019-1938-x}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-325946}, year = {2019}, abstract = {The pediatric immune deficiency X-linked proliferative disease-2 (XLP-2) is a unique disease, with patients presenting with either hemophagocytic lymphohistiocytosis (HLH) or intestinal bowel disease (IBD). Interestingly, XLP-2 patients display high levels of IL-18 in the serum even while in stable condition, presumably through spontaneous inflammasome activation. Recent data suggests that LPS stimulation can trigger inflammasome activation through a TNFR2/TNF/TNFR1 mediated loop in xiap-/- macrophages. Yet, the direct role TNFR2-specific activation plays in the absence of XIAP is unknown. We found TNFR2-specific activation leads to cell death in xiap-/- myeloid cells, particularly in the absence of the RING domain. RIPK1 kinase activity downstream of TNFR2 resulted in a TNF/TNFR1 cell death, independent of necroptosis. TNFR2-specific activation leads to a similar inflammatory NF-kB driven transcriptional profile as TNFR1 activation with the exception of upregulation of NLRP3 and caspase-11. Activation and upregulation of the canonical inflammasome upon loss of XIAP was mediated by RIPK1 kinase activity and ROS production. While both the inhibition of RIPK1 kinase activity and ROS production reduced cell death, as well as release of IL-1β, the release of IL-18 was not reduced to basal levels. This study supports targeting TNFR2 specifically to reduce IL-18 release in XLP-2 patients and to reduce priming of the inflammasome components.}, language = {en} }