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19F MR Imaging of Dule Lung Cancer Models with Two Administration Methods of PFC Nanoparticles

  • 0Harbin Medical University Cancer Hospital, Heilongjiang Province, Harbin, 150001, China.
Molecular Imaging and Biology +

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July 8, 2025

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July 8, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Pulmonary delivery of perfluorocarbon (PFC) nanoparticles offers superior lung cancer targeting compared to intravenous injection. This method enables effective in vivo detection of PFC nanoparticles in orthotopic lung tumors using 19F MR imaging.

Area Of Science

  • Nanomedicine
  • Biomedical Imaging
  • Oncology

Background

  • Pulmonary delivery is an effective strategy for lung cancer diagnosis and therapy.
  • Perfluorocarbon (PFC) nanoparticles offer potential for targeted drug delivery and imaging.

Purpose Of The Study

  • To compare pulmonary delivery of PFC nanoparticles in an orthotopic lung tumor model versus intravenous injection in a subcutaneous tumor model.
  • To confirm nanoparticle uptake in tumor tissue via 19F MR imaging and histological analysis.

Main Methods

  • Folate receptor (FR) targeted PFC nanoparticles were evaluated in vitro with H460 cells.
  • Orthotopic and subcutaneous lung cancer models were established in mice.
  • 19F MR imaging was performed before and after intratracheal or intravenous administration of PFC nanoparticles. Histological analysis (HE, fluorescent staining, TEM) was conducted on tumor tissues.

Main Results

  • Intratracheal delivery of PFC nanoparticles resulted in significant 19F MRI enhancement in orthotopic lung tumors compared to subcutaneous tumors.
  • Nanoparticle accumulation and 19F signal intensity increased over time in orthotopic tumors.
  • Histological analysis confirmed greater PFC nanoparticle accumulation in orthotopic lung tumor tissues.

Conclusions

  • Pulmonary delivery of PFC nanoparticles is a novel and effective approach for orthotopic lung cancer models.
  • 19F MR imaging can successfully detect PFC nanoparticles in vivo within lung tumors.

Keywords: