Related Experiment Video
Updated: Mar 23, 2026
Evaluation of Nanoparticle Uptake in Tumors in Real Time Using Intravital Imaging
Published on: June 21, 2011
Reporter nanoparticle that monitors its anticancer efficacy in real time
Ashish Kulkarni1, Poornima Rao2, Siva Natarajan2
1Laboratory of Nanomedicine, Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Harvard Medical School, Boston, MA 02115; Division of Biomedical Engineering, Harvard Medical School, Boston, MA 02115; ashishk@mit.edu ram@ncl.res.in shiladit@mit.edu.
Researchers developed a novel reporter nanoparticle that delivers cancer treatment and monitors its real-time efficacy. This self-reporting nanoparticle provides a noninvasive readout of treatment response in vivo.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Oncology
Background:
- Current methods for monitoring anticancer treatment efficacy are indirect, rely on anatomic measurements, and have prolonged time scales.
- These methods may not accurately reflect the actual therapeutic effect in real time.
Purpose of the Study:
- To engineer a 2-in-1 reporter nanoparticle for simultaneous drug delivery and real-time efficacy monitoring.
- To develop a noninvasive method for assessing treatment response in vivo.
Main Methods:
- Designed stimuli-responsive polymeric nanoparticles incorporating both therapeutic payloads (effector elements) and reporter elements.
- Engineered nanoparticles with an optimal ratio of effector and reporter elements for enhanced signal detection.
- Utilized a drug function-activatable reporter element within the same nanoparticle as the therapeutic payload.
Main Results:
- Demonstrated real-time, noninvasive readout of tumor response to chemotherapy in both sensitive and resistant models.
- Successfully monitored the efficacy of immunotherapy, specifically immune checkpoint inhibition in melanoma.
- Showcased the nanoparticle's ability to capture the temporal apoptosis process through real-time reporting.
Conclusions:
- The novel reporter nanoparticle enables real-time monitoring of anticancer treatment efficacy.
- This technology offers a significant advancement over current indirect and delayed efficacy assessment methods.
- The self-reporting capability provides unprecedented in vivo visualization of anticancer nanoparticles in action.
