Abstract
Three hybrids of dihydro-artemisinin (DHA) with β-aminopropionic acid, γ-aminobutyric acid, and histamine have been designed and synthesized. The conjugate of DHA with GABA labelled as 5b was confirmed the most active candidate against both Cort- and SNP-induced PC12 cell impairments with EC50 value of 8.04 ± 0.35, and 9.38 ± 0.56 μM, respectively. 5b was clearly highlighted as a good modulator on protein expression of Akt, Bcl-2, and Bax, indicating its functions against programmed cell apoptosis. 5b significantly reversed the Cort-induced excessive calcium influx and release from internal organelles. It was demonstrated the ability to express increased levels of β-tubulin III and to up-regulate phosphorylation level of cAMP response element-binding protein (CREB), leading to cell differentiation. It can penetrate blood − brain barrier (BBB) with propriate stability. Altogether, these data strongly support that 5b is a potential anti-depressant.
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