PMID- 15219940 OWN - NLM STAT- MEDLINE DCOM- 20040907 LR - 20181130 IS - 0304-3835 (Print) IS - 0304-3835 (Linking) VI - 211 IP - 2 DP - 2004 Aug 10 TI - Artesunate reduces chicken chorioallantoic membrane neovascularisation and exhibits antiangiogenic and apoptotic activity on human microvascular dermal endothelial cell. PG - 163-73 AB - Artesunate (ART), a semi-synthetic derivative of artemisinin extracted from the Chinese herb Artemisia annua, is a safe and effective antimalarial drug. ART has now been analyzed for its anti-angiogenic activity in vivo and in vitro. The anti-angiogenic effect in vivo was evaluated on chicken chorioallantoic membrane (CAM) neovascularisation model. ART started to significantly inhibit CAM angiogenesis at a low concentration of 10 nm/100 microl/egg, and completely inhibited the angiogenesis at 80 nm/100 microl/egg. The inhibitory effect of in vitro angiogenesis was tested on the models of proliferation and differentiation of human microvascular dermal endothelial cell line, an important representive of endothelial cells, as well as immunocytochemistry assay for two major VEGF receptors (Flt-1 and KDR/flk-1) expressions. The results showed that ART could remarkably inhibit proliferation and differentiation of endothelial cells in a dose-dependent form in a range of 12.5-100 microM. ART also could reduce Flt-1 and KDR/flk-1 expressions in a range of 0.1-0.5 microM. Furthermore, we examined the apoptosis of human microvascular dermal endothelial cell line induced by ART. The apoptosis was detected by morphological assay of ethidium bromide (EB)/acridine orange (AO) dual staining as well as DNA fragmentation assay of TUNEL labeling and quantified by flowcytometric PI assay. Our results suggest that the antiangiogenic effect induced by ART might occur by the induction of cellular apoptosis. These findings and the known low toxicity indicated ART might be a promising candidate for angiogenesis inhibitors. FAU - Huan-huan, Chen AU - Huan-huan C AD - Department of Clinical Pharmacology, The First Affiliated Hospital of Medical College, Zhejiang University, Hangzhou 310003, People's Republic of China. pharmchenh@163.com FAU - Li-Li, You AU - Li-Li Y FAU - Shang-Bin, Li AU - Shang-Bin L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Cancer Lett JT - Cancer letters JID - 7600053 RN - 0 (Angiogenesis Inhibitors) RN - 0 (Antimalarials) RN - 0 (Artemisinins) RN - 0 (Sesquiterpenes) RN - 0 (Vascular Endothelial Growth Factor A) RN - 60W3249T9M (Artesunate) RN - EC 2.7.10.1 (Receptors, Vascular Endothelial Growth Factor) SB - IM MH - Allantois MH - Angiogenesis Inhibitors/*pharmacology MH - Animals MH - Antimalarials/*pharmacology MH - Apoptosis/*drug effects MH - Artemisia/chemistry MH - Artemisinins/*pharmacology MH - Artesunate MH - Cell Differentiation MH - Cell Division MH - Chick Embryo MH - Chorion MH - *DNA Damage MH - Dose-Response Relationship, Drug MH - *Neovascularization, Pathologic MH - Receptors, Vascular Endothelial Growth Factor/drug effects/physiology MH - Sesquiterpenes/*pharmacology MH - Vascular Endothelial Growth Factor A/physiology EDAT- 2004/06/29 05:00 MHDA- 2004/09/08 05:00 CRDT- 2004/06/29 05:00 PHST- 2003/02/10 00:00 [received] PHST- 2003/12/19 00:00 [revised] PHST- 2004/03/04 00:00 [accepted] PHST- 2004/06/29 05:00 [pubmed] PHST- 2004/09/08 05:00 [medline] PHST- 2004/06/29 05:00 [entrez] AID - S0304383504002241 [pii] AID - 10.1016/j.canlet.2004.03.014 [doi] PST - ppublish SO - Cancer Lett. 2004 Aug 10;211(2):163-73. doi: 10.1016/j.canlet.2004.03.014.