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Bioengineered Chip Model For Magnetic-nanoparticle-driven Targeted Cancer Therapy.

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Bioengineered Chip Model For Magnetic-nanoparticle-driven Targeted Cancer Therapy.

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Bioengineered Chip Model for Magnetic-Nanoparticle-Driven Targeted Cancer Therapy.

Dhruba Dhar¹, Debolina Manna¹, Sampad Laha²

¹School of Medical Sciences and Technology, Indian Institute of Technology (IIT) Kharagpur, Kharagpur 721302, India.

ACS Applied Materials & Interfaces

|August 27, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Researchers developed a novel on-chip model to overcome limitations in magnetic drug targeting (MDT) research. This biomimetic system accurately mimics the tumor microenvironment, enabling better evaluation of magnetic drug carriers (MDCs) for cancer therapy.

Keywords:

3D cellular model frugal microfluidics magnetic drug targeting nanomedicine tumor-on-chip

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Monitoring of Nanodrug Accumulation in Murine Breast Cancer Metastases

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Published on: August 23, 2024

Area of Science:

Biomedical Engineering
Nanotechnology
Oncology

Background:

Magnetic drug targeting (MDT) faces clinical hurdles including magnetic field attenuation and lack of accurate disease models.
Existing models fail to replicate the tumor microenvironment (TME) and cellular responses to magnetic stimuli.

Purpose of the Study:

To develop a novel on-chip model for evaluating magnetic drug carriers (MDCs) in a physiologically relevant tumor microenvironment.
To address limitations in current MDT research models, including animal and synthetic platforms.

Main Methods:

A lithography-free fabrication method created a biomimetic breast TME model with MDA-MB-231 cells in hydrogel and HUVEC-lined microchannels.
Chitosan-coated MDCs (10-20 nm) were tested for retention under varying magnetic fields and shear stress.

Live/dead assays, immunocytochemistry, flow cytometry, and gene expression analysis assessed drug efficacy and cellular responses.

Main Results:

The on-chip model successfully replicated TME conditions, enabling precise magnetic-field calibration for MDC targeting.
Magnetically targeted drugs demonstrated dose-dependent effects, inducing apoptosis and reducing invasion markers.
The system facilitated assessment of MDC retention against magnetic field strength and shear stress.

Conclusions:

The developed bioengineered chip is a cost-effective, scalable, and biomimetic platform for MDT research.
This novel system enables preclinical screening of anticancer therapies and facilitates optimization of magnetic targeting strategies.