TY  - JOUR
A1  - Steiner, Thomas
A1  - Zachary, Marie
A1  - Bauer, Susanne
A1  - Müller, Martin J.
A1  - Krischke, Markus
A1  - Radziej, Sandra
A1  - Klepsch, Maximilian
A1  - Huettel, Bruno
A1  - Eisenreich, Wolfgang
A1  - Rudel, Thomas
A1  - Beier, Dagmar
T1  - Central Role of Sibling Small RNAs NgncR_162 and NgncR_163 in Main Metabolic Pathways of Neisseria gonorrhoeae
JF  - mBio
N2  - Small bacterial regulatory RNAs (sRNAs) have been implicated in the regulation of numerous metabolic pathways. In most of these studies, sRNA-dependent regulation of mRNAs or proteins of enzymes in metabolic pathways has been predicted to affect the metabolism of these bacteria. However, only in a very few cases has the role in metabolism been demonstrated. Here, we performed a combined transcriptome and metabolome analysis to define the regulon of the sibling sRNAs NgncR_162 and NgncR_163 (NgncR_162/163) and their impact on the metabolism of Neisseria gonorrhoeae. These sRNAs have been reported to control genes of the citric acid and methylcitric acid cycles by posttranscriptional negative regulation. By transcriptome analysis, we now expand the NgncR_162/163 regulon by several new members and provide evidence that the sibling sRNAs act as both negative and positive regulators of target gene expression. Newly identified NgncR_162/163 targets are mostly involved in transport processes, especially in the uptake of glycine, phenylalanine, and branched-chain amino acids. NgncR_162/163 also play key roles in the control of serine-glycine metabolism and, hence, probably affect biosyntheses of nucleotides, vitamins, and other amino acids via the supply of one-carbon (C\(_1\)) units. Indeed, these roles were confirmed by metabolomics and metabolic flux analysis, which revealed a bipartite metabolic network with glucose degradation for the supply of anabolic pathways and the usage of amino acids via the citric acid cycle for energy metabolism. Thus, by combined deep RNA sequencing (RNA-seq) and metabolomics, we significantly extended the regulon of NgncR_162/163 and demonstrated the role of NgncR_162/163 in the regulation of central metabolic pathways of the gonococcus.
KW  - sRNA
KW  - Neisseria gonorrhoeae
KW  - posttranscriptional regulation
KW  - amino acid transporter
KW  - bipartite metabolism
Y1  - 2023
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-313323
VL  - 14
ER  - 
TY  - JOUR
A1  - Dupuis, Luc
A1  - Dengler, Reinhard
A1  - Heneka, Michael T.
A1  - Meyer, Thomas
A1  - Zierz, Stephan
A1  - Kassubek, Jan
A1  - Fischer, Wilhelm
A1  - Steiner, Franziska
A1  - Lindauer, Eva
A1  - Otto, Markus
A1  - Dreyhaupt, Jens
A1  - Grehl, Torsten
A1  - Hermann, Andreas
A1  - Winkler, Andrea S.
A1  - Bogdahn, Ulrich
A1  - Benecke, Reiner
A1  - Schrank, Bertold
A1  - Wessig, Carsten
A1  - Grosskreutz, Julian
A1  - Ludolph, Albert C.
T1  - A Randomized, Double Blind, Placebo-Controlled Trial of Pioglitazone in Combination with Riluzole in Amyotrophic Lateral Sclerosis
JF  - PLoS One
N2  - Background: Pioglitazone, an oral anti-diabetic that stimulates the PPAR-gamma transcription factor, increased survival of mice with amyotrophic lateral sclerosis (ALS). 
Methods/Principal Findings: We performed a phase II, double blind, multicentre, placebo controlled trial of pioglitazone in ALS patients under riluzole. 219 patients were randomly assigned to receive 45 mg/day of pioglitazone or placebo (one: one allocation ratio). The primary endpoint was survival. Secondary endpoints included incidence of non-invasive ventilation and tracheotomy, and slopes of ALS-FRS, slow vital capacity, and quality of life as assessed using EUROQoL EQ-5D. The study was conducted under a two-stage group sequential test, allowing to stop for futility or superiority after interim analysis. Shortly after interim analysis, 30 patients under pioglitazone and 24 patients under placebo had died. The trial was stopped for futility; the hazard ratio for primary endpoint was 1.21 (95% CI: 0.71-2.07, p = 0.48). Secondary endpoints were not modified by pioglitazone treatment. Pioglitazone was well tolerated. 
Conclusion/Significance: Pioglitazone has no beneficial effects on the survival of ALS patients as add-on therapy to riluzole.
KW  - ALS
KW  - transgenic mouse model
KW  - central nervous system
KW  - nonalcoholic steatohepatitis
KW  - PPAR-gamme
KW  - hexanucleotide repeat
KW  - disease progression
KW  - delays progression
KW  - SOD1 mutations
KW  - monocycline
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-130255
VL  - 7
IS  - 6
ER  -