Role of metabolic modulator Bet-CA in altering mitochondrial hyperpolarization to suppress cancer associated angiogenesis and metastasis

New Arylpiperazines as Potent and Selective Dopamine D4 Receptor Ligands Potentially Useful to Treat Glioblastoma

The dopamine D4 receptor (D4R) has recently been proposed as an emerging target for treating glioblastoma (GBM). In this article, new piperazine ligands, analogues of the potent and selective D4R lead compounds 9 and 10, were prepared and evaluated for their affinity at D2-like receptor subtypes. The most promising results were obtained by replacing the N4-phenyl terminal of 9 with a naphthyl group. Indeed, α-naphthyl derivative 15 proved to have four times higher affinity for D4R than lead 9, whereas β-naphthyl compound 16 was about tenfold more selective for D4R than 9. These compounds behaved as D4R antagonists in both Gi/Go activation and β-arrestin2 recruitment assays. Interestingly, both decreased cell viability dose-dependently and altered the cell cycle of U87 MG, T98G, and U251 MG human GBM cell lines after 48 h treatment, inducing an increase in ROS levels and time-dependent mitochondrial depolarization.

New Spirocyclic Hydroxamic Acids as Effective Antiproliferative Agents

AIMS

The main goal of this work is to synthesize new original spirocyclic hydroxamic acids, investigate their cytotoxicity against the panel of tumor cell lines and possible mechanism of action of these active compounds.

BACKGROUND

Hydroxamic acids are one of the promising classes of chemical compounds with proven potential anticancer properties. This is manifested in the presence of metal chelating and antioxidant activities, the ability to inhibit histone deacetylase enzymes and a chemosensitizing effect against well known cytostatics.

OBJECTIVE

Original spirocyclic hydroxamic acids were synthesized and spectra of their antiproliferative activities were investigated.

METHODS

The cytotoxic activities on different tumor lines (SH-SY5Y, HeLa and healthy cells HEK-293) were investigated and determined possible underlying mechanisms of their activity.

RESULTS

New original spirocyclic hydroxamic acids were synthesized. These compounds exhibit antiproliferative properties against various tumor cultures cells and also exhibit antioxidant activity, a depolarizing effect on the mitochondrial membrane, inhibit the activity of the histone deacetylase enzyme, and also decrease of basal glycolysis and glycolytic capacity reserve of HeLa and SH-SY5Y tumor cell lines.

CONCLUSION

The most promising are compounds 5j-l containing two chlorine atoms as substituents in the quinazoline part of the molecule and hydroxamate function. Therefore, these compounds can be considered as hit compounds for the development on their basis multi-target anticancer agents.

Synergism of metabolic modulators Bet-CA and LDCA: a rational combinatorial approach to selectively combat cancer associated hallmark traits

The strategic combination of two metabolic modulators, Bet-CA and LDCA in a calculated ratio selectively and synergistically inhibits the hallmark traits of cancer by altering the highly resilient mitochondrial bioenergetics.