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Sci. Pharm.
Volume 77
Issue 6
10.3797/scipharm.oephg.21.SL-05
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Scientia Pharmaceutica is published by MDPI from Volume 84 Issue 3 (2016). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Austrian Pharmaceutical Society (Österreichische Pharmazeutische Gesellschaft, ÖPhG).
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Abstract

Discovery of Chemosensitizing Flavonoids from Eriobotrya japonica Using in silico and HPLC-SPE-NMR Techniques

by
P. H. PFISTERER
1,*,
P. SCHNEIDER
1,
A. RUDY
2,
J. M. ROLLINGER
1,
A. M. VOLLMAR
2 and
H. STUPPNER
1
1
Institute of Pharmacy/Pharmacognosy, Center of Molecular Biosciences Innsbruck, Leopold-Franzens University, Innrain 52c, 6020 Innsbruck, Austria
2
Department of Pharmacy, Center of Drug Research, Pharmaceutical Biology, Ludwig-Maximilians University, Butenandtstr. 5-13, 81377 Munich, Germany
*
Author to whom correspondence should be addressed.
Sci. Pharm. 2009, 77(6), 172; https://doi.org/10.3797/scipharm.oephg.21.SL-05
Submission received: 16 April 2009 / Accepted: 16 April 2009 / Published: 16 April 2009
Versions Notes

Abstract

Mimetics of the second mitochondria-derived activator of caspases (Smac) increase the sensitivity of tumor cells towards chemotherapeutics in cancer therapy [1]. Our aim was the discovery of naturally derived small molecule Smac-mimetics from the medicinal plant Eriobotrya japonica Lindl. (Rosaceae), which is known to contain cytotoxic constituents [2]. Using a previously generated and validated pharmacophore model [3] 122 3D-molecules (ERIO-database) of known constituents from the leaves of E. japonica were subjected to virtual screening. We focused on acylated flavonol monorhamnosides (AFMR) as promising phytochemical class due to the statistical evaluation of the virtual hits. AFMR were identified in the methanol extract by LC-MS and enriched by different chromatographic methods. In the Nicoletti test [4], the combination of the AFMR-mixture with sub-optimal concentrations of the chemotherapeutic etoposide strongly induced cell death in S-Jurkat and XIAP overexpressing Jurkat cells. Since the AFMR-mixture was not separable by conventional methods, we used an HPLC-SPE-NMR approach for the structural identification of single compounds. The combination of the in silico and HPLC-SPE-NMR techniques enabled the insight into ligand-target interactions of single compounds from a complex mixture.

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MDPI and ACS Style

PFISTERER, P.H.; SCHNEIDER, P.; RUDY, A.; ROLLINGER, J.M.; VOLLMAR, A.M.; STUPPNER, H. Discovery of Chemosensitizing Flavonoids from Eriobotrya japonica Using in silico and HPLC-SPE-NMR Techniques. Sci. Pharm. 2009, 77, 172. https://doi.org/10.3797/scipharm.oephg.21.SL-05

AMA Style

PFISTERER PH, SCHNEIDER P, RUDY A, ROLLINGER JM, VOLLMAR AM, STUPPNER H. Discovery of Chemosensitizing Flavonoids from Eriobotrya japonica Using in silico and HPLC-SPE-NMR Techniques. Scientia Pharmaceutica. 2009; 77(Short Lectures (SL)):172. https://doi.org/10.3797/scipharm.oephg.21.SL-05

Chicago/Turabian Style

PFISTERER, P. H., P. SCHNEIDER, A. RUDY, J. M. ROLLINGER, A. M. VOLLMAR, and H. STUPPNER. 2009. "Discovery of Chemosensitizing Flavonoids from Eriobotrya japonica Using in silico and HPLC-SPE-NMR Techniques" Scientia Pharmaceutica 77, Short Lectures (SL): 172. https://doi.org/10.3797/scipharm.oephg.21.SL-05

APA Style

PFISTERER, P. H., SCHNEIDER, P., RUDY, A., ROLLINGER, J. M., VOLLMAR, A. M., & STUPPNER, H. (2009). Discovery of Chemosensitizing Flavonoids from Eriobotrya japonica Using in silico and HPLC-SPE-NMR Techniques. Scientia Pharmaceutica, 77(Short Lectures (SL)), 172. https://doi.org/10.3797/scipharm.oephg.21.SL-05

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