Apoptosis inducing properties of 3-biotinylate-6-benzimidazole B-nor-cholesterol analogues
Zhiling Zhu1, Zhiping Liu1, Jianguo Cui1
1Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Key Laboratory of Beibu Gulf Environment Change and Resources Utilization, School of Chemistry and Material, Nanning Normal University, Nanning 530001, PR China.
Abstract:
In this work, a series of Biotin-substituted B-nor-cholesteryl benzimidazole compounds were synthesized. The antiproliferativeactivities of these compounds were evaluated in vitro using a series of human cancer cell lines, including HeLa (cervical cancer), SKOV3 (ovarian cancer), T-47D (thymus gland cancer), MCF-7 (human breast cancer) and HEK293T (normal renal epithelial) cells. These compounds displayed distinct antiproliferative activities against the currently tested cancer cells. The apoptotic properties induced by compound 6d were further investigated. Our results showed that compound 6d could induce the apoptosis of SKOV3 cells, blocking the cell growth in S-phase. Western blotting analyses revealed that compound 6d can induce cell apoptosis via the mitochondria-dependent pathway.
Insights
New biotin-substituted B-nor-cholesteryl benzimidazole compounds show antiproliferative effects against various human cancer cell lines. Compound 6d effectively induces apoptosis in ovarian cancer cells via the mitochondria-dependent pathway.
Area of Science:
- Medicinal Chemistry
- Cancer Biology
- Molecular Pharmacology
Background:
- Benzimidazole derivatives are recognized for their diverse pharmacological properties.
- Cholesterol derivatives offer unique structural scaffolds for drug design.
- Biotinylation can enhance cellular uptake and target specific pathways.
Purpose of the Study:
- To synthesize novel biotin-substituted B-nor-cholesteryl benzimidazole compounds.
- To evaluate the in vitro antiproliferative activity of these compounds against human cancer cell lines.
- To investigate the apoptotic mechanism of action for the most potent compound.
Main Methods:
- Chemical synthesis of biotin-conjugated B-nor-cholesteryl benzimidazoles.
- In vitro antiproliferative assays using HeLa, SKOV3, T-47D, MCF-7, and HEK293T cell lines.
- Flow cytometry and Western blotting to analyze apoptosis and cell cycle progression.
Main Results:
- The synthesized compounds exhibited varying degrees of antiproliferative activity against tested cancer cell lines.
- Compound 6d demonstrated significant antiproliferative effects, particularly against SKOV3 (ovarian cancer) cells.
- Compound 6d induced apoptosis in SKOV3 cells by blocking S-phase progression and activating the mitochondria-dependent apoptotic pathway.
Conclusions:
- Biotin-substituted B-nor-cholesteryl benzimidazoles represent a promising class of compounds for cancer therapy.
- Compound 6d warrants further investigation as a potential therapeutic agent for ovarian cancer.
- The mitochondria-dependent pathway is a key mechanism through which compound 6d exerts its anti-cancer effects.
