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Updated: Feb 17, 2026
Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring
Published on: December 9, 2010
Imaging of Nanoparticle Distribution to Assess Treatments That Alter Delivery
Stephanie J Blocker1, Anthony F Shields2,3
1Department of Oncology, Wayne State University, Detroit, MI, USA.
Abstract:
Molecular imaging is a vital tool to non-invasively measure nanoparticle delivery to solid tumors. Despite the myriad of nanoparticles studied for cancer, successful applications of nanoparticles in humans is limited by inconsistent and ineffective delivery. Successful nanoparticle delivery in preclinical models is often attributed to enhanced permeability and retention (EPR)-a set of conditions that is heterogeneous and transient in patients. Thus, researchers are evaluating therapeutic strategies to modify nanoparticle delivery, particularly treatments which have demonstrated effects on EPR conditions. Imaging nanoparticle distribution provides a means to measure the effects of therapeutic intervention on nanoparticle delivery to solid tumors. This review focuses on the utility of imaging to measure treatment-induced changes in nanoparticle delivery to tumors and provides preclinical examples studying a broad range of therapeutic interventions.
Insights
Molecular imaging tracks nanoparticle delivery to tumors. This review examines how therapies affect nanoparticle delivery, focusing on the enhanced permeability and retention (EPR) effect for improved cancer treatment.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Oncology
Background:
- Molecular imaging non-invasively assesses nanoparticle delivery to solid tumors.
- Clinical translation of nanoparticles is hindered by inconsistent delivery, often linked to the heterogeneous enhanced permeability and retention (EPR) effect.
- Therapeutic strategies are being explored to enhance nanoparticle delivery by modulating EPR conditions.
Purpose of the Study:
- To review the utility of molecular imaging in quantifying treatment-induced changes in nanoparticle delivery to solid tumors.
- To highlight preclinical examples of therapeutic interventions impacting nanoparticle delivery and EPR.
Main Methods:
- Literature review of studies employing molecular imaging to assess nanoparticle delivery in preclinical cancer models.
- Analysis of various therapeutic strategies aimed at modifying nanoparticle delivery and the EPR effect.
- Focus on imaging techniques used to measure treatment effects on nanoparticle biodistribution.
Main Results:
- Molecular imaging serves as a crucial tool to evaluate the efficacy of therapeutic interventions on nanoparticle delivery.
- Preclinical studies demonstrate that certain therapies can alter EPR conditions, thereby improving nanoparticle accumulation in tumors.
- Imaging provides quantitative data on the impact of interventions on nanoparticle distribution.
Conclusions:
- Molecular imaging is essential for measuring treatment-induced alterations in nanoparticle delivery to tumors.
- Understanding and manipulating the EPR effect through therapeutic interventions, as assessed by imaging, holds promise for enhancing nanoparticle-based cancer therapies.
- Further research utilizing imaging is needed to optimize nanoparticle delivery strategies for clinical application.
