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Die Optimierung der Biosynthese von Beauvericin und die Wirkung von Beauvericin und Enniatin auf Osteoklasten

Authors: Zink, Katharina;

Die Optimierung der Biosynthese von Beauvericin und die Wirkung von Beauvericin und Enniatin auf Osteoklasten

Abstract

Für die Biosynthese von Beauvericin (BEA) wurden CD-Lösungen mit Hefekulturen beimpft und nach Zugabe eines Maiskorns mit den Fusariumstämmen Fusarium subglutinans Nr. 213 und Nr. 368, Fusarium acuminatum Nr 313 und Fusarium proliferatum Nr. 183 inokuliert. Ein Teil der Proben wurden mit einer Precursorlösung von L-Methionin, L-Phenylalanin und D-α-Hydroxyisovaleriansäure mit einer Konzentration von 0,5 g Precursor/l Aqua dest versetzt. Nach der Bebrütung erfolgte die Aufarbeitung (Ausschüttelung mit CH2Cl2, MykoSep-Reinigung und Kieselgelreinigung) und die Messung mittels HPLC. Die BEA-Ausbeute der Versuche lag zwischen 0,0 und 1,40 μg BEA/100ml Hefelösung. Für die Versuche zur Wirkung von BEA und Enniatin (ENN) auf Osteoklasten wurde einerseits die dosisabhängige Wirkung (0,1 μM, 1 μM und 10 μM) von BEA und Enniatin auf die Knochenresorption und andererseits die Austestung der Recovery von Osteoklasten nach einer Belastung mit BEA und ENN untersucht. Es wurden Osteoblasten-Knochenmark-Co-Kulturen verwendet. Die Versuchsergebnisse zeigen einen deutlichen, dosisabhängigen inhibitorischen Effekt, wobei BEA eine stärkere Wirkung auf Osteoklasten zu haben scheint, als ENN. Die Recovery der Osteoklasten nach einer Toxinbehandlung mit Beauvericin und Enniatin scheint nicht vollständig möglich zu sein.

For the Biosynthesis of Beauvericin (BEA), CD-Solutions were inoculated with yeast. After adding one corn they were inoculated with Fusariumstains Fusarium subglutinans Nr. 213 und Nr. 368, Fusarium acuminatum Nr 313 and Fusarium proliferatum Nr. 183. A precursor was added to one part of the samples. After a breeding session the samples were reprocessed and measured by HPLC. The BEA production was between 0,0 and 1,40 μg BEA/100ml yeastsolution. Beauvericin and Enniatin (ENN) were tested regarding their dose-dependent effects on bone resorption. The recovery of Osteoclasts after treatment with BEA and ENN was also tested. Co-culture system using osteoblast and bone marrow were utilized. The experimental results showed a clear, dose-dependent inhibitory effect. Beauvericin had a stronger effect on osteoclasts than Enniatin. The recovery of osteoclasts after treatment with BEA and ENN seems not to be completely possible.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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