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Synthesis and biological evaluation of tanshinone IIA derivatives as novel endothelial protective agents
Xiaoling Bi1, Kuojun Zhang1, Long He1
1Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang Road, Nanjing 210009, China.
Aim:
Oxidative stress-induced endothelial injury is a main risk factor in the pathogenesis of cardiovascular diseases. Tanshinone IIA (Tan IIA) exerts protective functions on endothelial cells in response to oxidative stress. To exploit new bioactive compounds from this natural product, 12 derivatives were first synthesized and evaluated for endothelial protective activities.
Materials & Methods:
Title compounds were prepared according to high-yielded synthetic routes, and their protective effects on human endothelial EA.hy926 cells were evaluated. To explore the mechanism, their inhibition on apoptosis of endothelial cells and Nrf2 activating activities were investigated. Furthermore, computational ADME prediction and water solubility assay were carried out for active compounds.
Results:
Most of them exhibited potent endothelial protective effects on EA.hy926 cells injured by H2O2. In particular, compounds I-2 and II showed increased activity and water solubility compared with Tan IIA. Moreover, they reduced H2O2-induced apoptosis of EA.hy926 cells. A further exploration on the two compounds suggested that their actions were mediated by upregulation of antioxidant genes through activating Nrf2 pathway.
Conclusion:
These Tan IIA derivatives clearly showed related activities for the development of a new type of endothelial protective agents. [Formula: see text].
Insights
New Tanshinone IIA derivatives show potent endothelial protective effects against oxidative stress. These compounds may lead to novel treatments for cardiovascular diseases by reducing cell injury and apoptosis.
Area of Science:
- Natural Product Chemistry
- Cardiovascular Pharmacology
- Cellular Toxicology
Background:
- Endothelial injury from oxidative stress is a key factor in cardiovascular disease development.
- Tanshinone IIA (Tan IIA) is a natural compound with known protective effects on endothelial cells.
- Developing novel, effective endothelial protective agents is crucial for managing cardiovascular diseases.
Purpose of the Study:
- To synthesize and evaluate novel Tanshinone IIA derivatives for endothelial protective activity.
- To investigate the mechanism of action, including apoptosis inhibition and Nrf2 pathway activation.
- To assess the drug-likeness of active derivatives through ADME prediction and solubility studies.
Main Methods:
- Synthesis of 12 Tanshinone IIA derivatives.
- Evaluation of protective effects on H2O2-injured human endothelial EA.hy926 cells.
- Assessment of apoptosis inhibition, Nrf2 activation, computational ADME, and water solubility.
Main Results:
- Most derivatives demonstrated significant protective effects on endothelial cells.
- Compounds I-2 and II exhibited enhanced activity and water solubility compared to Tan IIA.
- These active compounds reduced H2O2-induced apoptosis by upregulating antioxidant genes via Nrf2 pathway activation.
Conclusions:
- The synthesized Tanshinone IIA derivatives possess significant endothelial protective activities.
- Compounds I-2 and II are promising candidates for developing new endothelial protective agents.
- The Nrf2 pathway is a key mechanism underlying the protective effects of these derivatives.
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