Targeting Triple Negative Breast Cancer with a Small-sized Paramagnetic Nanoparticle

Area of Science:

• Nanomedicine
• Biomedical Imaging
• Oncology

Background:

• Triple-negative breast cancer (TNBC) lacks targeted therapies and imaging agents.
• Development of novel diagnostic and therapeutic strategies for TNBC is critical.

Purpose of the Study:

• To develop a dual-modal nanoparticle for targeted imaging of TNBC.
• To evaluate the selective accumulation of the developed nanoparticles in TNBC tumors.

Main Methods:

• A small-sized dendrimer-based nanoparticle was synthesized, incorporating an MRI contrast agent (GdDOTA) and a NIR fluorescent dye (DL680).
• Systemic delivery of the dual-modal nanoparticles in a flank mouse model of TNBC.
• Detection and quantification of nanoparticle accumulation using both optical and MR imaging techniques.

Main Results:

• The dual-modal nanoparticles selectively accumulated in TNBC tumors following systemic administration.
• Both in-vivo and ex-vivo fluorescence imaging confirmed tumor-specific accumulation.
• The nanoparticles successfully targeted TNBC tumors while avoiding accumulation in other major organs.

Conclusions:

• A small-sized dendrimer-based dual-modal nanoparticle enables selective delivery to TNBC tumors.
• This dual-modal strategy shows promise for targeted imaging and potentially therapy of TNBC.
• The developed agent offers a potential advancement in TNBC diagnostics, addressing the current lack of targeted agents.