The design and synthesis of a novel compound of berberine and baicalein that inhibits the efficacy of lipid accumulation in 3T3-L1 adipocytes

The combination of berberine and baicalein may have a better therapeutic effect against disease. To explore the combined effect of baicalein and berberine in the treatment of obesity, we designed and synthesized a hybrid compound, and its biological activities were evaluated in 3T3-L1 adipocytes. The structures of the berberine-baicalein (BBS) compounds were confirmed by ¹H NMR, ¹³C NMR, ultraviolet spectroscopy and high resolution mass spectrometry (HRMS). The present study showed that the IC₅₀ values of the inhibitory effects of baicalein, berberine and BBS against 3T3-L1 cells were 29.81±0.90, 21.84±1.67 and 9.42±0.60µM, respectively. The expression of mRNAs related to lipolysis and lipogenesis were examined by quantitative Real-Time PCR. The results showed that BBS could up-regulate the expression of the ATGL gene and down-regulate the mRNA expression of Srebp-1c, Fasn, Scd1, and Acc in 3T3-L1 adipocytes. These results indicate that BBS may have a stronger effect than baicalein and berberine on the viability of 3T3-L1 preadipocytes. In addition, BBS may have therapeutic effects and pharmacological activities against obesity. This "medicine couple" may be beneficial for studies of traditional Chinese medicine.

Baicalein; Berberine; Obesity; Synthesis.