Luminescent Pyrrole-Based Phosphaphenalene Gold Complexes: Versatile Anticancer Tools with Wide Applicability

Area of Science:

• Medicinal Chemistry
• Oncology
• Materials Science

Background:

• Brain cancer remains a highly lethal disease with an urgent need for new theranostic agents.
• Phosphaphenalenes, six-membered phosphorus heterocycles, offer unique properties for chemical engineering and drug development.

Purpose of the Study:

• To explore the potential of phosphaphenalene-based gold(I) complexes as novel anticancer agents.
• To investigate how structural modifications influence the electronic and photophysical properties of these complexes.
• To evaluate their efficacy against various brain cancer cell lines.

Main Methods:

• Synthesis and structural modification of phosphaphenalene-based gold(I) complexes.
• Characterization of electronic and photophysical properties.
• In vitro antiproliferative assays against 14 cancer cell lines, including glioblastomas and brain metastases.

Main Results:

• Subtle structural modifications altered electronic distribution and imparted significant photophysical properties.
• Phosphaphenalene-based gold(I) complexes with pyrrole rings exhibited potent antiproliferative effects.
• IC50 values as low as 0.73 μM were achieved against diverse cancer cell lines.

Conclusions:

• This new family of phosphaphenalene-gold(I) complexes demonstrates significant bioactivity against brain cancer.
• Their combined therapeutic and photophysical properties open new avenues for fundamental research and clinical treatment of brain cancer.