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Erschienen in: Die Ophthalmologie 5/2011

01.05.2011 | Originalien

Zytoprotektive und antiangiogene Wirkung des Multikinaseinhibitors Sorafenib im retinalen Pigmentepithel

verfasst von: Dr. M. Kernt, S. Thiele, C. Hirneiss, A.S. Neubauer, C.A. Lackerbauer, A. Wolf, K.H. Eibl, C. Haritoglou, M.W. Ulbig, A. Kampik

Erschienen in: Die Ophthalmologie | Ausgabe 5/2011

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Zusammenfassung

Hintergrund

Kumulative Lichtexposition wird für die Entstehung der altersabhängigen Makuladegeneration (AMD) mitverantwortlich gemacht. Die Hemmung des „vascular endothelial growth factor A“ (VEGF) ist das wichtigste Ziel der aktuellen antiangiogenen Behandlungsstrategien bei AMD. In Fallberichten konnte die Wirksamkeit des Multikinaseinhibitors Sorafenib bei Patienten mit exsudativer AMD gezeigt werden. Diese Studie untersucht die Wirkung von Sorafenib auf die Expression der VEGF-Rezeptoren 1 und 2 (VEGFR-1/2) und die lichtinduzierte Expressionszunahme von VEGF in humanen retinalen Pigmentepithelzellen (RPE-Zellen).

Methoden

Der Effekt von Sorafenib auf die Expression von VEGFR-1 und -2 in primären humanen RPE-Zellen wurde auf zellulärer Ebene mittels RT-CR, Immunhistochemie und Westernblot untersucht. Zusätzlich wurden die RPE-Zellen mit rein weißem Licht bestrahlt und mit Sorafenib behandelt. Dann wurden die Vitalität der RPE-Zellen und die Expression von VEGF auf zellulärer Ebene bestimmt (Real-Time-PCR, Westernblot, Immunhistochemie, ELISA).

Ergebnis

Sorafenib reduziert die VEGFR-1/2-Expression von humanen RPE-Zellen. Die Bestrahlung der RPE-Zellen mit weißem Licht führt zu einer Abnahme der Vitalität und zur Induktion von VEGF. Diese lichtinduzierten Effekte werden signifikant reduziert, wenn Zellen mit Sorafenib (1 µg/ml) behandelt werden.

Schlussfolgerung

Die Ergebnisse dieser Studie zeigen, dass der Multikinaseinhibitor Sorafenib vielversprechende Eigenschaften für eine mögliche Anwendung bei exudativer AMD aufweist.
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Metadaten
Titel
Zytoprotektive und antiangiogene Wirkung des Multikinaseinhibitors Sorafenib im retinalen Pigmentepithel
verfasst von
Dr. M. Kernt
S. Thiele
C. Hirneiss
A.S. Neubauer
C.A. Lackerbauer
A. Wolf
K.H. Eibl
C. Haritoglou
M.W. Ulbig
A. Kampik
Publikationsdatum
01.05.2011
Verlag
Springer-Verlag
Erschienen in
Die Ophthalmologie / Ausgabe 5/2011
Print ISSN: 2731-720X
Elektronische ISSN: 2731-7218
DOI
https://doi.org/10.1007/s00347-010-2304-7

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