Combinatorial Nanomedicine Made of Squalenoyl-Gemcitabine and Edelfosine for the Treatment of Osteosarcoma

Cancers
C Rodríguez-NogalesM J Blanco-Prieto

Abstract

Due to chemoresistance and a high propensity to form lung metastasis, survival rates in pediatric osteosarcoma (OS) are poor. With the aim to improve anticancer activity in pediatric OS, a multidrug nanomedicine was designed using the alkyl-lysophospholipid edelfosine (EF) co-assembled with squalenoyl-gemcitabine (SQ-Gem) to form nanoassemblies (NAs) of 50 nm. SQ-Gem/EF NAs modified the total Gem pool exposure in the blood stream in comparison with SQ-Gem NAs, which correlated with a better tolerability and a lower toxicity profile after multiple intravenous administrations in mice. For in vivo preclinical assessment in an orthotopic OS tumor model, P1.15 OS cells were intratibially injected in athymic nude mice. SQ-Gem/EF NAs considerably decreased the primary tumor growth kinetics and reduced the number of lung metastases. Our findings support the candidature of this anticancer nanomedicine as a potential pediatric OS therapy.

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Methods Mentioned

BETA
nanoprecipitation
bioluminescence
dynamic light scattering
transgenic
X-ray

Software Mentioned

PKSolver
M3Vision
Aperio ImageScope
GraphPad Prism

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