Article (Scientific journals)
Nitrogen-containing bisphosphonates can inhibit angiogenesis in vivo without the involvement of farnesyl pyrophosphate synthase.
Stresing, Verena; Fournier, Pierrick G; Bellahcene, Akeila et al.
2011In BONE, 48 (2), p. 259-66
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Keywords :
Bisphosphonate; Risedronate; Zoledronate; FPPS; Angiogenesis
Abstract :
[en] Nitrogen-containing bisphosphonates (N-BPs) are widely used to block bone destruction associated with bone metastasis because they are effective inhibitors of osteoclast-mediated bone resorption. More specifically, once internalized by osteoclasts, N-BPs block the activity of farnesyl pyrophosphate synthase (FPPS), a key enzyme in the mevalonate pathway. In addition to their antiresorptive activity, preclinical evidence shows that N-BPs have antiangiogenic properties. However, the exact reasons for which N-BPs inhibit angiogenesis remain largely unknown. Using different angiogenesis models, we examined here the effects of zoledronate, risedronate and three structural analogs of risedronate (NE-58025, NE-58051 and NE-10790) with lower potencies to inhibit FPPS activity. Risedronate and zoledronate were much more potent than NE-compounds at inhibiting both endothelial cell proliferation in vitro and vessel sprouting in the chicken egg chorioallantoic membrane (CAM) assay. In addition, only risedronate and zoledronate inhibited the revascularization of the prostate gland in testosterone-stimulated castrated rats. Moreover, as opposed to NE-compounds, risedronate and zoledronate induced intracellular accumulation of isopentenyl pyrophosphate (IPP) in endothelial cells by blocking the activity of the IPP-consuming enzyme FPPS. Thus, these results indicated that N-BPs inhibited angiogenesis in a FPPS-dependent manner. However, drug concentrations used to inhibit angiogenesis, both in vitro and in the CAM and prostate gland assays, were high. In contrast, a low concentration of risedronate (1 muM) was sufficient to inhibit blood vessel formation in the ex vivo rat aortic ring assay. Moreover, NE-58025 (which had a 7-fold lower potency than risedronate to inhibit FPPS activity) was as effective as risedronate to reduce angiogenesis in the rat aortic ring assay. In conclusion, our results suggest that low concentrations of N-BPs inhibit angiogenesis in a FPPS-independent manner, whereas higher drug concentrations were required to inhibit FPPS activity in vivo.
Research center :
Giga-Cancer - ULiège
Disciplines :
Biochemistry, biophysics & molecular biology
Pharmacy, pharmacology & toxicology
Author, co-author :
Stresing, Verena
Fournier, Pierrick G
Bellahcene, Akeila ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > GIGA-R : Labo de recherche sur les métastases
Benzaid, Ismahene
Monkkonen, Hannu
Colombel, Marc
Ebetino, F Hal
Castronovo, Vincenzo ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie générale et cellulaire
Clezardin
Language :
English
Title :
Nitrogen-containing bisphosphonates can inhibit angiogenesis in vivo without the involvement of farnesyl pyrophosphate synthase.
Publication date :
2011
Journal title :
BONE
ISSN :
8756-3282
eISSN :
1873-2763
Publisher :
Elsevier, Netherlands
Volume :
48
Issue :
2
Pages :
259-66
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
INSERM - Institut National de la Santé et de la Recherche Médicale [FR]
UCBL - Université Claude Bernard. Lyon 1 [FR]
Novartis [BE]
Ligue Régionale contre le Cancer
Recherche sur le Cancer
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Funding text :
Alliance for Better Bone Health (Procter & Gamble Pharmaceuticals and Sanofi-Aventis
Commentary :
Copyright A(c) 2010 Elsevier Inc. All rights reserved.
Available on ORBi :
since 23 February 2011

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