Comb-like PEG-containing polymeric composition as low toxic drug nanocarrier

Area of Science:

• Biomaterials Science
• Nanotechnology
• Pharmaceutical Sciences

Background:

• Development of biocompatible, multifunctional polymeric drug carriers is essential for creating "smart" drugs.
• PEGylated comb-like polymeric nanocarriers (PNCs) have shown potential for drug delivery to tumor cells.
• This study investigates the general toxicity of a specific PEG-based comb-like polymer.

Purpose of the Study:

• To evaluate the general toxicity of a synthesized polyethylene glycol (PEG)-based comb-like polymeric nanocarrier (PNC).
• To assess the safety of PNCs for potential use as a drug delivery platform.

Main Methods:

• In vitro toxicity testing against human leukemia (HL-60, Jurkat), hepatocellular (HepG2), colon (HCT116), and breast (MCF-7) tumor cell lines.
• In vivo toxicity assessment in laboratory white mice and Wistar rats following prolonged intraperitoneal administration.

Main Results:

• The synthesized PNC demonstrated weak toxic effects on all tested human tumor cell lines.
• No significant toxic effects were observed in mice and rats after 20 days of intraperitoneal administration at high doses.
• The PNC is classified as a low toxicity substance (grade 4).

Conclusions:

• The developed PNC exhibits low toxicity, making it a promising candidate for drug delivery.
• Its reduced toxicity, improved bioavailability, and enhanced tumor cell cytotoxicity suggest potential for treating various diseases, especially cancer.
• PNCs represent a potentially safe and effective drug delivery platform.