TY  - JOUR
A1  - Eberhardt, Christiane S.
A1  - Haas, Johannes-Peter
A1  - Girschick, Hermann
A1  - Schwarz, Tobias
A1  - Morbach, Henner
A1  - Rösen-Wolff, Angela
A1  - Foell, Dirk
A1  - Dannecker, Guenther
A1  - Schepp, Carsten
A1  - Ganser, Gerd
A1  - Honke, Nora
A1  - Eggermann, Thomas
A1  - Müller-Berghaus, Jan
A1  - Wagner, Norbert
A1  - Ohl, Kim
A1  - Tenbrock, Klaus
T1  - No association of IL-12p40 pro1.1 polymorphism with juvenile idiopathic arthritis
JF  - Pediatric Rheumatology
N2  - Background: IL-12p40 plays an important role in the activation of the T-cell lines like Th17 and Th1-cells. Theses cells are crucial in the pathogenesis of juvenile idiopathic arthritis. A polymorphism in its promoter region and the genotype IL12p40 pro1.1 leads to a higher production of IL-12p40. We studied whether there is a difference in the distribution of the genotype in patients with JIA and the healthy population. 
Methods: In 883 patients and 321 healthy controls the IL-12p40 promoter genotype was identified by ARMS-PCR. 
Results: There is no association of IL-12p40 pro polymorphism neither in patients with JIA compared to controls nor in subtypes of JIA compared to oligoarthritis. We found a non-significant tendency of a higher prevalence of the genotype pro1.1 in systemic arthritis (32.4 %) and in rheumatoid factor negative polyarthritis (30.5 %) and a lower pro1.1 genotype in persistent oligoarthritis (20.7 %) and in enthesitis-related arthritis (17 %). Likelihood of the occurrence of genotype IL12-p40 pro1.1 in patients with systemic arthritis (OR 1.722, CI 95 % 1.344-2.615, p 0.0129) and RF-negative polyarthritis (OR 1.576, CI 95 % 1.046-2.376, p 0.0367) compared to persistent oligoarthritis was significantly higher. This was also true for comparison of their homozygous genotypes IL-12p40 pro 1.1 and 2.2 in systemic arthritis (OR 1.779, CI 95 % 1.045-3.029, p 0.0338). However, in Bonferroni correction for multiple hypothesis this was not significant. 
Conclusion: A tendency of a higher prevalence of the genotype IL-12p40 pro1.1 in systemic arthritis and in rheumatoid factor negative polyarthritis was observed but not significant. Further investigations should be done to clarify the role IL-12p40 in the different subtypes of JIA.
KW  - polymorphism
KW  - cytokine
KW  - children
KW  - serum
KW  - IL12B
KW  - gene
KW  - cells
KW  - juvenile idiopathic arthritis
KW  - IL-12p40
KW  - IL-12B
KW  - promoter
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-136281
VL  - 13
IS  - 61
ER  - 
TY  - JOUR
A1  - Krueger, Beate
A1  - Friedrich, Torben
A1  - Förster, Frank
A1  - Bernhardt, Jörg
A1  - Gross, Roy
A1  - Dandekar, Thomas
T1  - Different evolutionary modifications as a guide to rewire two-component systems
JF  - Bioinformatics and Biology Insights
N2  - Two-component systems (TCS) are short signalling pathways generally occurring in prokaryotes. They frequently regulate prokaryotic stimulus responses and thus are also of interest for engineering in biotechnology and synthetic biology. The aim of this study is to better understand and describe rewiring of TCS while investigating different evolutionary scenarios. Based on large-scale screens of TCS in different organisms, this study gives detailed data, concrete alignments, and structure analysis on three general modification scenarios, where TCS were rewired for new responses and functions: (i) exchanges in the sequence within single TCS domains, (ii) exchange of whole TCS domains; (iii) addition of new components modulating TCS function. As a result, the replacement of stimulus and promotor cassettes to rewire TCS is well defined exploiting the alignments given here. The diverged TCS examples are non-trivial and the design is challenging. Designed connector proteins may also be useful to modify TCS in selected cases.
KW  - histidine kinase
KW  - connector
KW  - Mycoplasma
KW  - engineering
KW  - promoter
KW  - sensor
KW  - response regulator
KW  - synthetic biology
KW  - sequence alignment
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-123647
N1  - This is an open access article. Unrestricted non-commercial use is permitted provided the original work is properly cited.
VL  - 6
ER  -