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The Role of Indocyanine Green Fluorescence in Complex Laparoscopic Cholecystectomy Navigation

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Theranostics Using Indocyanine Green Lactosomes.

Masaki Kaibori¹, Kosuke Matsui¹, Mikio Hayashi²

¹Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1191, Japan.

|August 12, 2022

Summary

Lactosomes, biocompatible nanoparticles, offer dual cancer imaging and therapy. These polymeric micelles loaded with indocyanine green enable fluorescence diagnosis and photodynamic therapy for difficult-to-treat cancers.

Keywords:

indocyanine green lactosome photodynamic diagnosis photodynamic therapy tumor accumulation

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Area of Science:

Biomaterials Science
Nanotechnology
Cancer Theranostics

Background:

Lactosomes are biocompatible nanoparticles formed from biodegradable amphiphilic block copolymers.
Their size is controllable (20–100 nm), enabling versatile applications.

Purpose of the Study:

To review lactosomes for cancer theranostics, focusing on molecular design, cancer tissue accumulation, and applications.
To explore the potential of lactosomes in treating unresectable cancers like glioblastoma.

Main Methods:

Self-assembly of hydrophilic polysarcosine and hydrophobic poly-L-lactic acid block copolymers.
Loading of hydrophobic imaging probes and photosensitizers (e.g., indocyanine green).

Main Results:

Indocyanine green-loaded lactosomes exhibit stability for long-term blood circulation and accumulation in cancer tissues.
Lactosomes function as photosensitizers, enabling simultaneous fluorescence diagnosis and photodynamic therapy.

Conclusions:

Lactosomes show promise for treating unresectable cancers, potentially improving patient quality of life.
Further research is needed to address clinical applications and future directions in cancer theranostics.