Angiotensin II receptor blockers induce autophagy in prostate cancer cells

Oncology Letters
Yunseo Woo, Yu-Jin Jung

Abstract

Angiotensin II receptor blockers (ARBs) are anti-hypertensive drugs that competitively inhibit the binding of angiotensin II to its receptor, resulting in blood vessel dilation and the reduction of blood pressure. These antagonists are also known as sartans, and are a group of pharmaceuticals that possess tetrazole or imidazole groups. In the present study, the anticancer and antimetastatic effects of the ARBs fimasartan, losartan, eprosartan and valsartan on the human prostate cancer PC-3, DU-145 and LNCap-LN3 cell lines were investigated in vitro. The proliferation of the prostate cancer cells was inhibited following treatment with 100 µM ARB. In particular, treatment with fimasartan resulted in marked anti-proliferative activity compared with the other ARBs. With respect to the molecular mechanism of the growth inhibition exhibited by the ARBs, 3-methyladenin (3-MA), an autophagy inhibitor, was revealed to increase the survival rate of PC-3 cells when cell death inhibitors were pretreated with fimasartan. In addition, the ARBs induced autophagy with increased expression levels of autophagy protein (Atg) 5-12, Atg 16-like-1, beclin-1 and microtubule-associated protein 1A/1B-light chain 3 (LC3). Notably, the enhanced expressio...Continue Reading

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Citations

Feb 6, 2020·Cell Death & Disease·Kalhara R MenikdiwelaNaima Moustaid-Moussa
Jun 12, 2019·BMC Biology·Dominik AwadHelmut Bergler
Mar 7, 2021·Cells·Maksymilian ZiajaAgnieszka Wanda Piastowska-Ciesielska
Mar 16, 2021·Frontiers in Oncology·Maria Paz Hernández-CáceresCristina Bertocchi
Apr 3, 2021·Molecular Biology Reports·Tapan BehlSwati Chadha
Jun 8, 2021·Frontiers in Oncology·José A Carlos-EscalanteTalia Wegman-Ostrosky
Dec 3, 2021·Biological & Pharmaceutical Bulletin·Yoshie TsujiyaNoboru Okamura

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Methods Mentioned

BETA
X-ray
Assay
confocal microscopy

Software Mentioned

GraphPad
GraphPad Prism
ImageJ

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