Jujube-containing herbal decoctions induce neuronal differentiation and the expression of anti-oxidant enzymes in cultured PC12 cells
| Autor: | Jianping Chen, Candy T.W. Lam, Amy G. W. Gong, Laura Minglu Zhang, Karl Wah Keung Tsim, Huangquan Lin, Tina T. X. Dong, Kelly Y.C. Lam |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Neurogenesis Neuronal Outgrowth Apoptosis Decoction Pharmacology Transfection PC12 Cells Antioxidants Gene Expression Regulation Enzymologic law.invention 03 medical and health sciences 0302 clinical medicine tert-Butylhydroperoxide Neurofilament Proteins law Drug Discovery Animals Medicine MTT assay RNA Messenger Cytotoxicity Neurons Plants Medicinal Dose-Response Relationship Drug Plant Extracts GCLM business.industry Ziziphus Antioxidant Response Elements Rats Oxidative Stress 030104 developmental biology GCLC Phytotherapy business 030217 neurology & neurosurgery Drugs Chinese Herbal |
| Zdroj: | Journal of Ethnopharmacology. 188:275-283 |
| ISSN: | 0378-8741 |
| DOI: | 10.1016/j.jep.2016.05.015 |
| Popis: | Ethnopharmacological relevance The fruit of Ziziphus jujuba (Mill.), known as J ujuba F ructus (JF) or jujube, is a well-known T raditional C hinese M edicine (TCM) for blood nourishment and sedation effect. Apart from prescribing as single herb alone, JF is very often being included in multi-herbal decoctions to prolong, enhance and harmonize pharmaceutical effects of decoctions while at the same time reducing toxicity. Here, we aimed to compare the protective and differentiating activities of three chemically standardized jujube-containing decoctions, including G ui z hi T ang (GZT), N eibu D angguijianzhong T ang (NDT) and Z a o T ang (ZOT) in cultured PC12 cells. Materials and methods The protein expressions of neurofilaments, including NF68, NF160 and NF200, under the herbal treatment were revealed by western blot. The determination of neurite outgrowth in cultured PC12 cells upon the treatment of herbal extracts was performed by light microscope equipped with a phase-contrast condenser and SPOT imaging software. The protective effect against tBHP-induced cytotoxicity under the herbal treatment was measured by MTT assay. A luciferase reporter construct carrying four repeats of anti-oxidant response element (ARE) and a downstream luciferase reporter gene luc2P was transfected into PC12 cells to study the transcriptional activation of ARE. The mRNA expression of antioxidant enzymes under the herbal treatment was analyzed by quantitative real-time PCR. Results These jujube-containing decoctions processed similar neuro-protective and brain beneficial properties. The herbal treatment induced the protein expression of neurofilaments. Neurite outgrowth was observed under the herbal treatment. In parallel, the pre-treatment of herbal extracts protected PC 12 cells against oxidative stress-induced apoptosis in a dose-dependent manner. Moreover, the herbal treatments triggered the mRNA expressions of relevant anti-oxidation genes, i.e. g lutamate- c ysteine l igase c atalytic subunit (GCLC), g lutamate- c ysteine l igase m odulatory subunit (GCLM), g lutathione S - t ransferase (GST) and N AD(P)H q uinone o xidoreductase (NQO1) via the activation of a nti-oxidant r esponse e lement (ARE). Conclusion The results therefore demonstrated neuro-protective and differentiating properties of the three closely related decoctions, and which subsequently illustrated the enhancement function of jujube within a multi-herbal decoction. |
| Databáze: | OpenAIRE |
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