Benzyl-Functionalised Imidazolium Ionic Liquids as Lead Candidates Against Human Breast Cancer: An Integrated In...

Area of Science:

• Medicinal Chemistry
• Materials Science
• Cancer Research

Background:

• Ionic liquids (ILs) possess unique physicochemical properties enabling tunable biological activity.
• Their structural flexibility offers potential for developing next-generation anticancer agents with enhanced selectivity and efficacy.
• Developing novel anticancer lead compounds with improved therapeutic indices remains a critical challenge in oncology.

Purpose of the Study:

• To synthesize and evaluate a series of benzyl-functionalized imidazolium ionic liquids for their anticancer potential.
• To assess the cytotoxicity and selectivity of these ILs against various human cancer cell lines and normal cells.
• To investigate the structure-activity relationships and drug-likeness of the synthesized ILs.

Main Methods:

• Synthesis of novel benzyl-functionalized imidazolium ionic liquids with diverse para-substituents.
• Cytotoxicity assays using multiple human cancer cell lines (MCF-7, SHSY-5Y, A549, HepG2, HT-29) and mouse embryonic fibroblasts (NIH 3T3).
• Determination of half-maximal inhibitory concentrations (IC50) and selectivity indices; assessment of drug-likeness using Lipinski's and Veber's rules.

Main Results:

• All synthesized ILs exhibited cytotoxicity against tested cancer cell lines, with notable selectivity towards estrogen-positive breast cancer cells (MCF-7).
• ILs with H, CH3, F, Cl, and Br substituents showed superior growth inhibition against MCF-7 compared to tamoxifen.
• The IL containing a nitro (NO2) substituent displayed a broad safety window against MCF-7 and induced caspase-dependent apoptosis.

Conclusions:

• Benzyl-functionalized imidazolium ILs represent a promising class of compounds for anticancer drug development.
• Substituent modification on the benzyl group effectively modulates cytotoxicity and selectivity, offering a platform for targeted cancer therapies.
• The synthesized ILs exhibit favorable drug-likeness, supporting their potential as viable lead compounds.