Cited by 139Bone health and treatmentsCell death mechanisms and regulationAngiogenesis and VEGF in Cancer

Zoledronate Sensitizes Endothelial Cells to Tumor Necrosis Factor-induced Programmed Cell Death

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Bezzi, Manuela, Hasmim, Meriem, Bieler, Grégory, Dormond, Olivier, Rüegg, Curzio·2003·Journal of Biological Chemistry

Abstract

Bisphosphonates are potent inhibitors of osteoclast function widely used to treat conditions of excessive bone resorption, including tumor bone metastases. Recent evidence indicates that bisphosphonates have direct cytotoxic activity on tumor cells and suppress angiogenesis, but the associated molecular events have not been fully characterized. In this study we investigated the effects of zoledronate, a nitrogen-containing bisphosphonate, and clodronate, a non-nitrogen-containing bisphosphonate, on human umbilical vein endothelial cell (HUVEC) adhesion, migration, and survival, three events essential for angiogenesis. Zoledronate inhibited HUVEC adhesion mediated by integrin alphaVbeta3, but not alpha5beta1, blocked migration and disrupted established focal adhesions and actin stress fibers without modifying cell surface integrin expression level or affinity. Zoledronate treatment slightly decreased HUVEC viability and strongly enhanced tumor necrosis factor (TNF)-induced cell death. HUVEC treated with zoledronate and TNF died without evidence of enhanced annexin-V binding, chromatin condensation, or nuclear fragmentation and caspase dependence. Zoledronate inhibited sustained phosphorylation of focal adhesion kinase (FAK) and in combination with TNF, with and without interferon (IFN) gamma, of protein kinase B (PKB/Akt). Constitutive active PKB/Akt protected HUVEC from death induced by zoledronate and TNF/IFNgamma. Phosphorylation of c-Src and activation of NF-kappaB were not affected by zoledronate. Clodronate had no effect on HUVEC adhesion, migration, and survival nor did it enhanced TNF cytotoxicity. Taken together these data demonstrate that zoledronate sensitizes endothelial cells to TNF-induced, caspase-independent programmed cell death and point to the FAK-PKB/Akt pathway as a novel zoledronate target. These results have potential implications to the clinical use of zoledronate as an anti-angiogenic or anti-cancer agent.

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  1. Takagi, J., Petre, B. M., Walz, T., and Springer, T. A. (2002) Cell 110, 599 -611
  2. Xiang, J., Chao, D. T., and Korsmeyer, S. J. (1996) Proc. Natl. Acad. Sci. U. S. A. 93, 14559 -14563

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Authors
Bezzi, M., Hasmim, M., Bieler, G., Dormond, O., & Rüegg, C.
Affiliations
University of Lausanne (CH)
Corresponding author
Rüegg, Curzio
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2003-10
Volume
278
Issue
44
Pages
43603-43614
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2031276908
Cited by
139
References
91
Citations by year
2023: 1 · 2022: 3 · 2021: 1 · 2019: 4 · 2018: 2 · 2017: 3 · 2016: 6 · 2015: 8 · 2014: 7 · 2013: 8 · 2012: 7
FWCI
5.23
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • IRIS (submittedVersion)
  • SERVAL (Université de Lausanne) (submittedVersion)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (63752)
Topics
  • Health Sciences › Medicine › Oncology › Bone health and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
Keywords
zoledronic acid, bisphosphonates, clodronate, endothelial cells, TNF-α, programmed cell death, caspase-independent cell death, angiogenesis, focal adhesion kinase, Akt signaling, integrin αvβ3, endothelial cell adhesion, endothelial cell migration, focal adhesions, stress fibers, interferon-gamma, NF-κB, Src kinase, anti-angiogenic therapy, cancer therapy
MeSH terms
Zoledronic Acid, Adenoviridae, Cell Adhesion, Cell Membrane, Cell Movement, Cell Survival, Cells, Cultured, Clodronic Acid, Diphosphonates, Coloring Agents, Endothelium, Vascular, Enzyme Activation, Flow Cytometry, Humans, Imidazoles, Microscopy, Fluorescence, Phosphorylation, Protein-Tyrosine Kinases, Proto-Oncogene Proteins, Tumor Necrosis Factor-alpha, Umbilical Veins, Cell Death, Apoptosis, Annexin A5, Protein Serine-Threonine Kinases, Electroporation, Angiogenesis Inhibitors, Integrin alpha5beta1, Integrin alphaVbeta3, Endothelial Cells, Proto-Oncogene Proteins c-akt, Focal Adhesion Protein-Tyrosine Kinases, Focal Adhesion Kinase 1

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