Curcumin-loaded γ-cyclodextrin liposomal nanoparticles as delivery vehicles for osteosarcoma

Area of Science:

• Nanomedicine
• Cancer Biology
• Drug Delivery

Background:

• Curcumin, a broad-spectrum anticancer agent, faces challenges due to its poor water solubility.
• Liposomal nanoparticles offer a promising strategy for encapsulating and delivering hydrophobic drugs like curcumin.
• Cyclodextrins can enhance curcumin's solubility and stability prior to liposomal encapsulation.

Purpose of the Study:

• To develop and evaluate a novel liposomal curcumin formulation for cancer treatment.
• To assess the efficacy of liposomal curcumin against osteosarcoma (OS) and breast cancer models.
• To investigate the mechanism of cell death induced by liposomal curcumin.

Main Methods:

• Curcumin was encapsulated in 2-Hydroxypropyl-γ-cyclodextrin and subsequently in liposomes.
• In vitro studies were conducted using KHOS OS and MCF-7 breast cancer cell lines.
• In vivo efficacy was evaluated using a xenograft OS model.

Main Results:

• The liposomal curcumin complex demonstrated significant anticancer activity in vitro and in vivo.
• Liposomal curcumin induced apoptotic cell death via caspase cascade activation.
• This contrasts with DMSO-curcumin, which induced autophagic cell death.

Conclusions:

• Curcumin-loaded γ-cyclodextrin liposomes are effective delivery vehicles for treating mesenchymal and epithelial cancers.
• The formulation exhibits promising therapeutic potential for osteosarcoma and breast cancer.
• The induction of apoptosis represents a key mechanism of action for liposomal curcumin.