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New Findings from University of Konstanz Update Understanding of Bioinformatics (Transcriptional and metabolic adaptation of human neurons to the...

July 16, 2014



New Findings from University of Konstanz Update Understanding of Bioinformatics (Transcriptional and metabolic adaptation of human neurons to the mitochondrial toxicant MPP+)

By a News Reporter-Staff News Editor at Biotech Week -- Fresh data on Biotechnology are presented in a new report. According to news reporting out of Constance, Germany, by NewsRx editors, research stated, "Assessment of the network of toxicity pathways by Omics technologies and bioinformatic data processing paves the road toward a new toxicology for the twenty-first century. Especially, the upstream network of responses, taking place in toxicant-treated cells before a point of no return is reached, is still little explored."

Our news journalists obtained a quote from the research from the University of Konstanz, "We studied the effects of the model neurotoxicant 1-methyl-4-phenylpyridinium (MPP+) by a combined metabolomics (mass spectrometry) and transcriptomics (microarrays and deep sequencing) approach to provide unbiased data on earliest cellular adaptations to stress. Neural precursor cells (LUHMES) were differentiated to homogeneous cultures of fully postmitotic human dopaminergic neurons, and then exposed to the mitochondrial respiratory chain inhibitor MPP+ (5 mu M). At 18-24 h after treatment, intracellular ATP and mitochondrial integrity were still close to control levels, but pronounced transcriptome and metabolome changes were seen. Data on altered glucose flux, depletion of phosphocreatine and oxidative stress (e.g., methionine sulfoxide formation) confirmed the validity of the approach. New findings were related to nuclear paraspeckle depletion, as well as an early activation of branches of the transsulfuration pathway to increase glutathione. Bioinformatic analysis of our data identified the transcription factor ATF-4 as an upstream regulator of early responses. Findings on this signaling pathway and on adaptive increases of glutathione production were confirmed biochemically. Metabolic and transcriptional profiling contributed complementary information on multiple primary and secondary changes that contribute to the cellular response to MPP+."

According to the news editors, the research concluded: "Thus, combined 'Omics' analysis is a new unbiased approach to unravel earliest metabolic changes, whose balance decides on the final cell fate."

For more information on this research see: Transcriptional and metabolic adaptation of human neurons to the mitochondrial toxicant MPP+. Cell Death & Disease, 2014;5():235-249. Cell Death & Disease can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group - www.nature.com/; Cell Death & Disease - www.nature.com/cddis/)

Our news journalists report that additional information may be obtained by contacting A.K. Krug, University of Konstanz, Chair Biochem Pharmacol, D-78457 Constance, Germany. Additional authors for this research include S. Gutbier, L. Zhao, D. Poltl, C. Kullmann, V. Ivanova, S. Forster, S. Jagtap, J. Meiser, G. Leparc, S. Schildknecht, M. Adam, K. Hiller, H. Farhan, T. Brunner, T. Hartung, A. Sachinidis and M. Leist (see also Biotechnology).

Keywords for this news article include: Biotechnology, Cells, Europe, Germany, Neurons, Constance, Bioengineering, Applied Bioinformatics

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Biotech Week


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