TY  - JOUR
A1  - Leonhardt, Ines
A1  - Spielberg, Steffi
A1  - Weber, Michael
A1  - Albrecht-Eckardt, Daniela
A1  - Bläss, Markus
A1  - Claus, Ralf
A1  - Barz, Dagmar
A1  - Scherlach, Kirstin
A1  - Hertweck, Christian
A1  - Löffler, Jürgen
A1  - Hünniger, Kerstin
A1  - Kurzai, Oliver
T1  - The fungal quorum-sensing molecule farnesol activates innate immune cells but suppresses cellular adaptive immunity
JF  - mBio
N2  - Farnesol, produced by the polymorphic fungus Candida albicans, is the first quorum-sensing molecule discovered in eukaryotes. Its main function is control of C. albicans filamentation, a process closely linked to pathogenesis. In this study, we analyzed the effects of farnesol on innate immune cells known to be important for fungal clearance and protective immunity. Farnesol enhanced the expression of activation markers on monocytes (CD86 and HLA-DR) and neutrophils (CD66b and CD11b) and promoted oxidative burst and the release of proinflammatory cytokines (tumor necrosis factor alpha [TNF-\(\alpha\)] and macrophage inflammatory protein 1 alpha [MIP-1 \(\alpha\)]). However, this activation did not result in enhanced fungal uptake or killing. Furthermore, the differentiation of monocytes to immature dendritic cells (iDC) was significantly affected by farnesol. Several markers important for maturation and antigen presentation like CD1a, CD83, CD86, and CD80 were significantly reduced in the presence of farnesol. Furthermore, farnesol modulated migrational behavior and cytokine release and impaired the ability of DC to induce T cell proliferation. Of major importance was the absence of interleukin 12 (IL-12) induction in iDC generated in the presence of farnesol. Transcriptome analyses revealed a farnesol-induced shift in effector molecule expression and a down-regulation of the granulocyte-macrophage colony-stimulating factor (GM-CSF) receptor during monocytes to iDC differentiation. Taken together, our data unveil the ability of farnesol to act as a virulence factor of C. albicans by influencing innate immune cells to promote inflammation and mitigating the Th1 response, which is essential for fungal clearance.
KW  - human dendritic cells
KW  - Pseudomonas aeruginosa
KW  - induced apoptosis
KW  - cytokine production
KW  - biofilm formation
KW  - Candida albicans
KW  - mouse model
KW  - systemic candidiasis
KW  - oxidative stress
KW  - carcinoma cells
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-143756
VL  - 6
IS  - 2
ER  - 
TY  - JOUR
A1  - Kleikers, Pamela W. M.
A1  - Hooijmans, Carlijn
A1  - Göb, Eva
A1  - Langhauser, Friederike
A1  - Rewell, Sarah S. J.
A1  - Radermacher, Kim
A1  - Ritskes-Hoitinga, Merel
A1  - Howells, David W.
A1  - Kleinschnitz, Christoph
A1  - Schmidt, Harald H. H. W.
T1  - A combined pre-clinical meta-analysis and randomized confirmatory trial approach to improve data validity for therapeutic target validation
JF  - Scientific Reports
N2  - Biomedical research suffers from a dramatically poor translational success. For example, in ischemic stroke, a condition with a high medical need, over a thousand experimental drug targets were unsuccessful. Here, we adopt methods from clinical research for a late-stage pre-clinical meta-analysis (MA) and randomized confirmatory trial (pRCT) approach. A profound body of literature suggests NOX\(_{2}\) to be a major therapeutic target in stroke. Systematic review and MA of all available NOX\(_{2}\)\(^{-/y}\) studies revealed a positive publication bias and lack of statistical power to detect a relevant reduction in infarct size. A fully powered multi-center pRCT rejects NOX\(_{2}\) as a target to improve neurofunctional outcomes or achieve a translationally relevant infarct size reduction. Thus stringent statistical thresholds, reporting negative data and a MA-pRCT approach can ensure biomedical data validity and overcome risks of bias.
KW  - focal cerebral ischemia
KW  - darbepoetin alpha
KW  - mice
KW  - translational stroke research
KW  - colony-stimulating factor
KW  - NADPH oxidase inhibitors
KW  - chronic kidney disease
KW  - diabetes mellitus
KW  - oxidative stress
KW  - search filter
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-151401
VL  - 5
IS  - 13428
ER  - 
TY  - JOUR
A1  - Kim, Jae Ho
A1  - Franck, Julien
A1  - Kang, Taewook
A1  - Heinsen, Helmut
A1  - Ravid, Rivka
A1  - Ferrer, Isidro
A1  - Cheon, Mi Hee
A1  - Lee, Joo-Yong
A1  - Yoo, Jong Shin
A1  - Steinbusch, Harry W.
A1  - Salzet, Michel
A1  - Fournier, Isabelle
A1  - Park, Young Mok
T1  - Proteome-wide characterization of signalling interactions in the hippocampal CA4/DG subfield of patients with Alzheimer's disease
JF  - Scientific Reports
N2  - Alzheimer's disease (AD) is the most common form of dementia; however, mechanisms and biomarkers remain unclear. Here, we examined hippocampal CA4 and dentate gyrus subfields, which are less studied in the context of AD pathology, in post-mortem AD and control tissue to identify possible biomarkers. We performed mass spectrometry-based proteomic analysis combined with label-free quantification for identification of differentially expressed proteins. We identified 4,328 proteins, of which 113 showed more than 2-fold higher or lower expression in AD hippocampi than in control tissues. Five proteins were identified as putative AD biomarkers (MDH2, PCLO, TRRAP, YWHAZ, and MUC19 isoform 5) and were cross-validated by immunoblotting, selected reaction monitoring, and MALDI imaging. We also used a bioinformatics approach to examine upstream signalling interactions of the 113 regulated proteins. Five upstream signalling (IGF1, BDNF, ZAP70, MYC, and cyclosporin A) factors showed novel interactions in AD hippocampi. Taken together, these results demonstrate a novel platform that may provide new strategies for the early detection of AD and thus its diagnosis.
KW  - imaging mass spectrometry
KW  - neuron navigator 3
KW  - dentate gyrus
KW  - growth factor
KW  - mouse model
KW  - neurotrophic factor
KW  - entorhinal cortex
KW  - factor expression
KW  - oxidative stress
KW  - memory deficits
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-151727
VL  - 5
IS  - 11138
ER  - 
TY  - JOUR
A1  - Blein, Sophie
A1  - Bardel, Claire
A1  - Danjean, Vincent
A1  - McGuffog, Lesley
A1  - Healay, Sue
A1  - Barrowdale, Daniel
A1  - Lee, Andrew
A1  - Dennis, Joe
A1  - Kuchenbaecker, Karoline B.
A1  - Soucy, Penny
A1  - Terry, Mary Beth
A1  - Chung, Wendy K.
A1  - Goldgar, David E.
A1  - Buys, Saundra S.
A1  - Janavicius, Ramunas
A1  - Tihomirova, Laima
A1  - Tung, Nadine
A1  - Dorfling, Cecilia M.
A1  - van Rensburg, Elizabeth J.
A1  - Neuhausen, Susan L.
A1  - Ding, Yuan Chun
A1  - Gerdes, Anne-Marie
A1  - Ejlertsen, Bent
A1  - Nielsen, Finn C.
A1  - Hansen, Thomas V. O.
A1  - Osorio, Ana
A1  - Benitez, Javier
A1  - Andreas Conejero, Raquel
A1  - Segota, Ena
A1  - Weitzel, Jeffrey N.
A1  - Thelander, Margo
A1  - Peterlongo, Paolo
A1  - Radice, Paolo
A1  - Pensotti, Valeria
A1  - Dolcetti, Riccardo
A1  - Bonanni, Bernardo
A1  - Peissel, Bernard
A1  - Zaffaroni, Daniela
A1  - Scuvera, Giulietta
A1  - Manoukian, Siranoush
A1  - Varesco, Liliana
A1  - Capone, Gabriele L.
A1  - Papi, Laura
A1  - Ottini, Laura
A1  - Yannoukakos, Drakoulis
A1  - Konstantopoulou, Irene
A1  - Garber, Judy
A1  - Hamann, Ute
A1  - Donaldson, Alan
A1  - Brady, Angela
A1  - Brewer, Carole
A1  - Foo, Claire
A1  - Evans, D. Gareth
A1  - Frost, Debra
A1  - Eccles, Diana
A1  - Douglas, Fiona
A1  - Cook, Jackie
A1  - Adlard, Julian
A1  - Barwell, Julian
A1  - Walker, Lisa
A1  - Izatt, Louise
A1  - Side, Lucy E.
A1  - Kennedy, M. John
A1  - Tischkowitz, Marc
A1  - Rogers, Mark T.
A1  - Porteous, Mary E.
A1  - Morrison, Patrick J.
A1  - Platte, Radka
A1  - Eeles, Ros
A1  - Davidson, Rosemarie
A1  - Hodgson, Shirley
A1  - Cole, Trevor
A1  - Godwin, Andrew K
A1  - Isaacs, Claudine
A1  - Claes, Kathleen
A1  - De Leeneer, Kim
A1  - Meindl, Alfons
A1  - Gehrig, Andrea
A1  - Wappenschmidt, Barbara
A1  - Sutter, Christian
A1  - Engel, Christoph
A1  - Niederacher, Dieter
A1  - Steinemann, Doris
A1  - Plendl, Hansjoerg
A1  - Kast, Karin
A1  - Rhiem, Kerstin
A1  - Ditsch, Nina
A1  - Arnold, Norbert
A1  - Varon-Mateeva, Raymonda
A1  - Schmutzler, Rita K.
A1  - Preisler-Adams, Sabine
A1  - Markov, Nadja Bogdanova
A1  - Wang-Gohrke, Shan
A1  - de Pauw, Antoine
A1  - Lefol, Cedrick
A1  - Lasset, Christine
A1  - Leroux, Dominique
A1  - Rouleau, Etienne
A1  - Damiola, Francesca
A1  - Dreyfus, Helene
A1  - Barjhoux, Laure
A1  - Golmard, Lisa
A1  - Uhrhammer, Nancy
A1  - Bonadona, Valerie
A1  - Sornin, Valerie
A1  - Bignon, Yves-Jean
A1  - Carter, Jonathan
A1  - Van Le, Linda
A1  - Piedmonte, Marion
A1  - DiSilvestro, Paul A.
A1  - de la Hoya, Miguel
A1  - Caldes, Trinidad
A1  - Nevanlinna, Heli
A1  - Aittomäki, Kristiina
A1  - Jager, Agnes
A1  - van den Ouweland, Ans M. W.
A1  - Kets, Carolien M.
A1  - Aalfs, Cora M.
A1  - van Leeuwen, Flora E.
A1  - Hogervorst, Frans B. L.
A1  - Meijers-Heijboer, Hanne E. J.
A1  - Oosterwijk, Jan C.
A1  - van Roozendaal, Kees E. P.
A1  - Rookus, Matti A.
A1  - Devilee, Peter
A1  - van der Luijt, Rob B.
A1  - Olah, Edith
A1  - Diez, Orland
A1  - Teule, Alex
A1  - Lazaro, Conxi
A1  - Blanco, Ignacio
A1  - Del Valle, Jesus
A1  - Jakubowska, Anna
A1  - Sukiennicki, Grzegorz
A1  - Gronwald, Jacek
A1  - Spurdle, Amanda B.
A1  - Foulkes, William
A1  - Olswold, Curtis
A1  - Lindor, Noralene M.
A1  - Pankratz, Vernon S.
A1  - Szabo, Csilla I.
A1  - Lincoln, Anne
A1  - Jacobs, Lauren
A1  - Corines, Marina
A1  - Robson, Mark
A1  - Vijai, Joseph
A1  - Berger, Andreas
A1  - Fink-Retter, Anneliese
A1  - Singer, Christian F.
A1  - Rappaport, Christine
A1  - Geschwantler Kaulich, Daphne
A1  - Pfeiler, Georg
A1  - Tea, Muy-Kheng
A1  - Greene, Mark H.
A1  - Mai, Phuong L.
A1  - Rennert, Gad
A1  - Imyanitov, Evgeny N.
A1  - Mulligan, Anna Marie
A1  - Glendon, Gord
A1  - Andrulis, Irene L.
A1  - Tchatchou, Andrine
A1  - Toland, Amanda Ewart
A1  - Pedersen, Inge Sokilde
A1  - Thomassen, Mads
A1  - Kruse, Torben A.
A1  - Jensen, Uffe Birk
A1  - Caligo, Maria A.
A1  - Friedman, Eitan
A1  - Zidan, Jamal
A1  - Laitman, Yael
A1  - Lindblom, Annika
A1  - Melin, Beatrice
A1  - Arver, Brita
A1  - Loman, Niklas
A1  - Rosenquist, Richard
A1  - Olopade, Olufunmilayo I.
A1  - Nussbaum, Robert L.
A1  - Ramus, Susan J.
A1  - Nathanson, Katherine L.
A1  - Domchek, Susan M.
A1  - Rebbeck, Timothy R.
A1  - Arun, Banu K.
A1  - Mitchell, Gillian
A1  - Karlan, Bethy Y.
A1  - Lester, Jenny
A1  - Orsulic, Sandra
A1  - Stoppa-Lyonnet, Dominique
A1  - Thomas, Gilles
A1  - Simard, Jacques
A1  - Couch, Fergus J.
A1  - Offit, Kenenth
A1  - Easton, Douglas F.
A1  - Chenevix-Trench, Georgia
A1  - Antoniou, Antonis C.
A1  - Mazoyer, Sylvie
A1  - Phelan, Catherine M.
A1  - Sinilnikova, Olga M.
A1  - Cox, David G.
T1  - An original phylogenetic approach identified mitochondrial haplogroup T1a1 as inversely associated with breast cancer risk in BRCA2 mutation carriers
JF  - Breast Cancer Research
N2  - Introduction: 
Individuals carrying pathogenic mutations in the BRCA1 and BRCA2 genes have a high lifetime risk of breast cancer. BRCA1 and BRCA2 are involved in DNA double-strand break repair, DNA alterations that can be caused by exposure to reactive oxygen species, a main source of which are mitochondria. Mitochondrial genome variations affect electron transport chain efficiency and reactive oxygen species production. Individuals with different mitochondrial haplogroups differ in their metabolism and sensitivity to oxidative stress. Variability in mitochondrial genetic background can alter reactive oxygen species production, leading to cancer risk. In the present study, we tested the hypothesis that mitochondrial haplogroups modify breast cancer risk in BRCA1/2 mutation carriers. 

Methods: 
We genotyped 22,214 (11,421 affected, 10,793 unaffected) mutation carriers belonging to the Consortium of Investigators of Modifiers of BRCA1/2 for 129 mitochondrial polymorphisms using the iCOGS array. Haplogroup inference and association detection were performed using a phylogenetic approach. ALTree was applied to explore the reference mitochondrial evolutionary tree and detect subclades enriched in affected or unaffected individuals. 

Results: 
We discovered that subclade T1a1 was depleted in affected BRCA2 mutation carriers compared with the rest of clade T (hazard ratio (HR) = 0.55; 95% confidence interval (CI), 0.34 to 0.88; P = 0.01). Compared with the most frequent haplogroup in the general population (that is, H and T clades), the T1a1 haplogroup has a HR of 0.62 (95% CI, 0.40 to 0.95; P = 0.03). We also identified three potential susceptibility loci, including G13708A/rs28359178, which has demonstrated an inverse association with familial breast cancer risk. 

Conclusions:
This study illustrates how original approaches such as the phylogeny-based method we used can empower classical molecular epidemiological studies aimed at identifying association or risk modification effects.
KW  - single-nucleotide polymorphisms
KW  - genetic modifiers
KW  - oxidative stress
KW  - consortium
KW  - multiple diseases
KW  - DNA
KW  - haplogroups
KW  - susceptibility
KW  - Ovarian
KW  - variants
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-145458
VL  - 17
IS  - 61
ER  -