Planta Med 2016; 82(11/12): 1000-1008
DOI: 10.1055/s-0042-105158
Biological and Pharmacological Activity
Original Papers
Georg Thieme Verlag KG Stuttgart · New York

A Polyphenol-Enriched Fraction of Rose Oil Distillation Wastewater Inhibits Cell Proliferation, Migration and TNF-α-Induced VEGF Secretion in Human Immortalized Keratinocytes[*]

Jonas Wedler
1  Institute for Pharma Technology, School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Muttenz, Switzerland
,
Krasimir Rusanov
2  AgroBioInstitute, Sofia, Bulgaria
,
Ivan Atanassov
2  AgroBioInstitute, Sofia, Bulgaria
,
Veronika Butterweck
1  Institute for Pharma Technology, School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Muttenz, Switzerland
› Author Affiliations
Further Information

Publication History

received 04 February 2016
revised 06 March 2016

accepted 10 March 2016

Publication Date:
19 April 2016 (eFirst)

Abstract

Water steam distillation of rose flowers separates the essential oil from the polyphenol-containing rose oil distillation wastewater. Recently, a strategy was developed to separate rose oil distillation wastewater into a polyphenol depleted water fraction and a polyphenol-enriched fraction [RF20-(SP-207)]. The objective of the present study was to investigate RF20-(SP-207) and fraction F(IV), augmented in quercetin and ellagic acid, for possible antiproliferative effects in immortalized human keratinocytes (HaCaT) since rose petals are known to contain compounds with potential antiproliferative activity.

RF20-(SP-207) revealed dose-dependent antiproliferative activity (IC50 of 9.78 µg/mL). In a nontoxic concentration of 10 µg/mL, this effect was stronger than that of the two positive controls LY294002 (10 µM, PI3 K-inhibitor, 30 % inhibition) and NVP-BEZ235 (100 nM, dual PI3 K/mTOR inhibitor, 30 % inhibition) and clearly exceeded the antiproliferative action of quercetin (50 µM, 25 % inhibition) and ellagic acid (1 µM, 15 % inhibition). Time-lapse microscopy detected a significant impairment of cell migration of RF20-(SP-207) and F(IV). At concentrations of 10 µg/mL of both, extract and fraction, cell migration was strongly suppressed (51 % and 28 % gap closure, respectively, compared to 95 % gap closure 24 hours after control treatment). The suppression of cell migration was comparable to the positive controls LY294002, NVP-BEZ235, and quercetin. Furthermore, basal and TNF-α-stimulated VEGF-secretion was significantly reduced by RF20-(SP-207) and F(IV) at 10 µg/mL (44 % vs. untreated control).

In conclusion, RF20-(SP-207) showed promising antiproliferative and antimigratory effects and could be developed as a supportive, therapy against hyperproliferation-involved skin diseases.

* Dedicated to Prof. Dr. Dr. h. c. mult. Kurt Hostettmann in recognition of his outstanding contribution to natural product research.