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3D-Printed Nanoporous Scaffolds Impregnated with Zoledronate for the Treatment of Spinal Bone Metastases

Published online by Cambridge University Press:  11 March 2019

Elie Akoury ,
Michael H. Weber  and
Derek H. Rosenzweig
Elie Akoury
Affiliation:
Department of Surgery, Division of Orthopaedics, McGill University and The Research Institute of the McGill University Health Centre, Injury Repair Recovery Program, Montreal, QC.
Michael H. Weber
Affiliation:
Department of Surgery, Division of Orthopaedics, McGill University and The Research Institute of the McGill University Health Centre, Injury Repair Recovery Program, Montreal, QC.
Derek H. Rosenzweig*
Affiliation:
Department of Surgery, Division of Orthopaedics, McGill University and The Research Institute of the McGill University Health Centre, Injury Repair Recovery Program, Montreal, QC.
*
*To whom correspondence should be addressed.[email protected]
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Abstract:

Zoledronate (Zol) is a bone-preserving/ anti-tumoral drug that is widely used for the treatment of many cancers including spinal bone metastases. High systemic Zol doses required to elicit an adequate effect in the spine often lead to significant side effects, limiting its prolonged use and effectiveness. Here, we aim to provide an alternative strategy to locally deliver Zol at the tumor site. We show that nanoporous 3D-printed scaffolds can be loaded with Zol and possess the ability to release Zol (10-28%) over a sustained period. Additionally, we demonstrate that Zol-impregnated scaffolds, mostly Gel Lay, impair the proliferation of the prostate cancer cell line LAPC4 and the prostate-induced bone metastasis cells in vitro. 3D-printed nanoporous polymers offer a novel and versatile opportunity for potential local delivery of drugs in future clinical settings. These polymers can decrease systemic exposure and related side effects of Zol while at the same time concentrating the drug effect at the tumor site thereby inhibiting tumor proliferation. Also, these scaffolds could be co-printed or coupled with other materials to produce custom implants that offer better structural support for bone growth at the tumor site following resection.

Keywords

3D printingnanostructure
Type
Articles
Information
MRS Advances , Volume 4 , Issue 21: Biomaterials and Soft Materials , 2019 , pp. 1245 - 1251
Copyright
Copyright © Materials Research Society 2019 

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