Development of 5-hydroxybenzothiophene derivatives as multi-kinase inhibitors with potential anti-cancer activity

Area of Science:

• Medicinal Chemistry
• Cancer Biology
• Pharmacology

Background:

• Chemoresistance necessitates novel therapeutic strategies beyond single-target approaches.
• Multi-target therapies offer a promising avenue to overcome cancer resistance.
• Kinase inhibitors are crucial in cancer treatment, but resistance remains a challenge.

Purpose of the Study:

• To develop novel multi-target kinase inhibitors based on the 5-hydroxybenzothiophene scaffold.
• To evaluate the anti-cancer activity of these derivatives against various cancer cell lines.
• To identify potent lead compounds for further drug development.

Main Methods:

• Synthesis and characterization of 5-hydroxybenzothiophene derivatives.
• In vitro kinase inhibition assays to determine IC50 values.
• Cell viability, cell cycle arrest, apoptosis, and migration assays in cancer cell lines (e.g., U87MG).

Main Results:

• Several 5-hydroxybenzothiophene derivatives exhibited significant anti-cancer activity.
• Compound 16b demonstrated potent inhibition of key kinases and low IC50 values.
• 16b induced G2/M cell cycle arrest, apoptosis, and inhibited cell migration in glioblastoma cells.

Conclusions:

• Compound 16b is a potent multi-target kinase inhibitor with significant anti-cancer effects.
• The 5-hydroxybenzothiophene core is a promising scaffold for developing novel anti-cancer agents.
• 16b warrants further investigation as a lead compound for chemoresistance-combating cancer therapies.