A Model-based Method of Characterizing the Pharmacokinetics of Engineered Nanoparticles in Pilot Studies.

Date publication

avril 2015

Auteurs

Membres identifiés du Cancéropôle Est :
Pr BARBERI-HEYOB Muriel , Pr BASTOGNE Thierry

Tous les auteurs :
Tylcz JB, Bastogne T, Benachour H, Bechet D, Bullinger E, Garnier H, Barberi-Heyob M

Lien Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/25838525

Résumé

Recent developments on engineered multifunctional nanomaterials have opened new perspectives in oncology. But assessment of both quality and safety in nanomedicine requires new methods for their biological characterization. This paper proposes a new model-based approach for the pre-characterization of multifunctional nanomaterials pharmacokinetics in small scale in vivo studies. Two multifunctional nanoparticules, with and without active targeting, designed for photodynamic therapy guided by magnetic resonance imaging are used to exemplify the presented method. It allows to the experimenter to rapidly test and select the most relevant PK model structure planned to be used in the subsequent explanatory studies. We also show that the model parameters estimated from the in vivo responses provide relevant preliminary information about the tumor uptake, the elimination rate and the residual storage. For some parameters, the accuracy of the estimates is accurate enough to compare and draw significant pre-conclusions. A third advantage of this approach is the possibility to optimally refine the in vivo protocol for the subsequent explanatory and confirmatory studies complying with the 3Rs (reduction, refinement, replacement) ethical recommendations. More precisely, we show that the identified model may be used to select the appropriate duration of the MR imaging sessions planned for the subsequent studies. The proposed methodology integrates MRI image processing, continuous-time system identification algorithms and statistical analysis. Except, the choice of the model parameters to be compared and interpreted, most of the processing procedure may be automated to speed up the PK characterization process at an early stage of experimentation.

Référence

IEEE Trans Nanobioscience. 2015 Apr 1.