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Wang H, Liu Y, Guo Z, Wu K, Zhang Y, Tian Y, Zhao B, Lu H. Aconitine induces cell apoptosis via mitochondria and death receptor signaling pathways in hippocampus cell line. Res Vet Sci 2022; 143:124-133. [PMID: 35026629 DOI: 10.1016/j.rvsc.2022.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/20/2021] [Accepted: 01/03/2022] [Indexed: 01/10/2023]
Abstract
Aconitine is a plant toxin derived from aconitum genus and well known for its neurological and vascular toxicity. However, the mechanism of toxicity on the growth and apoptosis of the neurological cells has not been well investigated. In this study, we used HT22 cell lines derived from hippocampus to explore the mechanism. We began with examination of the viability and DA (dopamine) contents of cells treated with different dose of aconitine. In this study, we investigated the role of apoptosis in AC-induced HT22 cells. Our results showed that aconitine inhibited HT22 cells growth and increased DA contents in a dose dependent manner. Aconitine treatment induced apoptosis in HT22 cells and we found aconitine induced apoptosis by upregulating the expression of Bax, Cyto c, Apaf-1, Caspase9, Fas, Fas-L, Fadd, Caspase8, Caspase3 with concomitant decreasing of Bcl-2 and Bid expression. Collectively, results suggest that aconitine induce apoptosis through mitochondrial-mediated and death receptor signaling pathways in HT22 cells.
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Affiliation(s)
- Hui Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yanbing Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ziyu Guo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Kexin Wu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yunhao Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yanan Tian
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine, Texas A&M University, College Station, TX 77843, USA
| | - Baoyu Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Hao Lu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China.
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2
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Fu R, Xing H, Wang X, Liu Y, Li B, Zhang L, Li Z, Duan D, Chen J. Neuroprotective effects of tetrahydroxystilbene glucoside against rotenone-induced toxicity in PC12 cells. Biol Pharm Bull 2021; 45:143-149. [PMID: 34707025 DOI: 10.1248/bpb.b21-00812] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To investigate the mechanism of the protective effect of tetrahydroxystilbene glucoside (TSG) on nerve cells, an injury model induced by rotenone in PC12 cells was constructed. Cell viability was detected by using CCK8 assay. Apoptosis was detected by using flow cytometry. The mitochondrial membrane potential (MMP) was detected by using the fluorescent probe JC-1. Generation of reactive oxygen species (ROS) in PC12 cells was determined using the CM-H2DCFDA probe. Protein expression in PC12 cells was detected using western blotting. The results showed that TSG (20-100 μM) attenuated the cytotoxic effects of rotenone on PC12 cells. TSG pretreatment attenuated the apoptosis rate, the degradation of PARP and the activation of cleaved caspase 3, which was induced by rotenone. TSG can significantly reduce the effect of rotenone on the reduction of MMP and the expression of cytoC in the cytosolic fraction. TSG attenuated rotenone-induced de-phosphorylation and mitochondrial translocation of cofilin, as well as rotenone-induced accumulation of ROS. The western blot results showed that ROT could decrease the expression level of p-GSK-3β and p-AKT, and TSG could weaken these effects of rotenone. In addition, TSG increased the expression level of Nrf2 in the nuclear fraction. These results suggest that TSG could protect PC12 cells against rotenone through multiple pathways. Thus, TSG has the potential to become a novel neuroprotective agent.
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Affiliation(s)
- Ruoqiu Fu
- Department of Pharmacy, Daping Hospital, Army Medical University
| | - Haiyan Xing
- Department of Pharmacy, Daping Hospital, Army Medical University
| | - Xianfeng Wang
- Department of Pharmacy, Daping Hospital, Army Medical University
| | - Yao Liu
- Department of Pharmacy, Daping Hospital, Army Medical University
| | - Bin Li
- Department of Pharmacy, Daping Hospital, Army Medical University
| | - Lin Zhang
- Department of Pharmacy, Daping Hospital, Army Medical University
| | - Ziwei Li
- Department of Pharmacy, Daping Hospital, Army Medical University
| | - Dongyu Duan
- Department of Pharmacy, Daping Hospital, Army Medical University
| | - Jianhong Chen
- Department of Pharmacy, Daping Hospital, Army Medical University
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Lee CY, Chou YE, Hsin MC, Lin CW, Wang PH, Yang SF, Hsiao YH. Dioscorea nipponica Makino suppresses TPA-induced migration and invasion through inhibition of matrix metalloproteinase-9 in human cervical cancer cells. ENVIRONMENTAL TOXICOLOGY 2020; 35:1194-1201. [PMID: 32519806 DOI: 10.1002/tox.22984] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/11/2020] [Accepted: 05/18/2020] [Indexed: 06/11/2023]
Abstract
Dioscorea nipponica Makino has been used for the treatment of chronic bronchitis, rheumatoid arthritis, cough, and asthma. Several studies have established the antitumor effect of D. nipponica Makino extract (DNE). However, no investigations have considered the antimetastatic potential of DNE in cervical cancer cells. The present study examined the effects of DNE on cervical cancer cells treated with 12-O-tetradecanoylphorbol-13-acetate and characterized the possible molecular mechanisms. MTT assay results indicated that DNE exhibited very low cytotoxicity, and DNE significantly reduced the invasion and migration abilities of cervical cancer cells. Gelatin zymography analysis revealed that DNE significantly inhibited matrix metalloproteinase-9 (MMP-9) activity. Reverse transcription-polymerase chain reaction assay results revealed that DNE treatment inhibited the MMP-9 mRNA levels of HeLa and SiHa cells. Western blot results revealed that DNE significantly diminished the ERK1/2 phosphorylation. In conclusion, we revealed that the antimetastatic effects of DNE on cervical cancer cells are due to its inhibition of MMP-9 expression through the ERK1/2 pathway.
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Affiliation(s)
- Chung-Yuan Lee
- Department of Obstetrics and Gynecology, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
- Department of Nursing, Chang Gung University of Science and Technology, Chiayi Campus, Chiayi, Taiwan
| | - Ying-Erh Chou
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Min-Chien Hsin
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chiao-Wen Lin
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan
- Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Po-Hui Wang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yi-Hsuan Hsiao
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua, Taiwan
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4
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Effects of DA-9801 on the inflammation and apoptosis induced by angiotensin II in human dermal microvascular endothelial cells. J Pharmacol Sci 2020; 145:52-59. [PMID: 33357779 DOI: 10.1016/j.jphs.2020.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 10/05/2020] [Accepted: 10/28/2020] [Indexed: 11/22/2022] Open
Abstract
DA-9801, a plant-based drug used for the treatment of diabetic neuropathy, is known to improve angiotensin II (Ang II)-induced vascular endothelial cell dysfunction. However, the underlying mechanism is not fully understood. We aimed to determine whether the protective effect of DA-9801 against Ang II-induced endothelial cell dysfunction was mediated via inhibition of endothelial cell inflammation and apoptosis. Ang II-induced oxidative stress was attenuated by pretreatment of human dermal microvascular endothelial cells (HDMECs) with DA-9801. This prevented the Ang II-induced upregulation of NAD(P)H oxidase (the NOX4 and p22phox subunits) and reactive oxygen species. Further, pretreatment of HDMECs with DA-9801 ameliorated Ang II-mediated nuclear factor kappa B activity via prevention of the upregulation of extracellular signal-regulated kinase and p38 mitogen-activated protein kinase. It also decreased the Ang II-stimulated increase in inducible nitric oxide synthase (NOS) and decreased endothelial NOS protein expression. DA-9801 decreased Ang II-induced upregulation of intercellular adhesion molecule 1, vascular adhesion molecule, and E-selectin in HDMECs. Moreover, TUNEL and annexin V-FITC fluorescence staining for apoptosis and the activities of caspases 9, 7, and 3 decreased in HDMECs pretreated with DA-9801, indicating that the drug enhanced anti-apoptotic pathways. Thus, DA-9801 modulated Ang II-induced endothelial cell dysfunction via inflammatory and apoptotic pathways.
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Choi JG, Khan Z, Choi SZ, Kim SY, Oh MS. DA-9801, a standardized Dioscorea extract, improves memory function via the activation of nerve growth factor-mediated signaling. Nutr Neurosci 2020; 25:219-230. [DOI: 10.1080/1028415x.2020.1743916] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jin Gyu Choi
- Department of Oriental Pharmaceutical Science, College of Pharmacy and Kyung Hee East–West Pharmaceutical Research Institute, Kyung Hee University, Dongdaemun-gu, Republic of Korea
| | - Zahra Khan
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Yeonsu-gu, Republic of Korea
| | | | - Sun Yeou Kim
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Yeonsu-gu, Republic of Korea
| | - Myung Sook Oh
- Department of Oriental Pharmaceutical Science, College of Pharmacy and Kyung Hee East–West Pharmaceutical Research Institute, Kyung Hee University, Dongdaemun-gu, Republic of Korea
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Dongdaemun-gu, Republic of Korea
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Chen Y, Xie HQ, Sha R, Xu T, Zhang S, Fu H, Xia Y, Liu Y, Xu L, Zhao B. 2,3,7,8-Tetrachlorodibenzo-p-dioxin and up-regulation of neurofilament expression in neuronal cells: Evaluation of AhR and MAPK pathways. ENVIRONMENT INTERNATIONAL 2020; 134:105193. [PMID: 31775093 DOI: 10.1016/j.envint.2019.105193] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/25/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
Dioxin exposure is reported to affect nervous system development and increase the risk of neurodegenerative diseases. Generally, dioxin exerts its neurotoxicity via aryl hydrocarbon receptor (AhR). Neurofilament (NF) light (NFL) protein is a biomarker for both neuronal differentiation and neurodegeneration and its expression is controlled by the mitogen-activated protein kinase (MAPK) pathway. However, the effects of dioxin on NFL expression and involved mechanisms are incompletely understood. We aimed to investigate the effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on NFL expression and elucidate the underlining signaling pathways and their potential crosstalk, specifically between MAPK and AhR pathway. We employed primary cultured rat cortical neurons to evaluate the effect of TCDD exposure on NFL expression. We also used nerve growth factor (NGF)-treated PC12 cells with specific inhibitors to investigate the involvement of and potential crosstalk between the MAPK pathway and the AhR pathway in mediating the effects of TCDD on NFL expression. After TCDD exposure, NFL mRNA and protein levels were upregulated in cultured neurons. NFL protein was preferentially found in the cell body compared with neurites of the cultured neurons. In PC12 cells, TCDD enhanced both NGF-induced NFL expression and phosphorylation of ERK1/2 and p38. The addition of MAPK-pathway inhibitors (PD98059 and SB230580) partially blocked the TCDD-induced NFL upregulation. CH223191, an AhR antagonist, reversed the upregulation of NFL and phosphorylation of ERK1/2 and p38 induced by TCDD. This study demonstrated TCDD-induced upregulation of NFL in cultured neurons, with protein retained in the cell body. TCDD action was dependent on activation of AhR and MAPK, while crosstalk was found between these two signaling pathways.
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Affiliation(s)
- Yangsheng Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Heidi Qunhui Xie
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Rui Sha
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Tuan Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Songyan Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Hualing Fu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Yingjie Xia
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Yiyun Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Li Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100085, China.
| | - Bin Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100085, China.
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Jeon J, Kwon H, Cho E, Kim KS, Yun J, Lee YC, Kim DH. The effect of coniferaldehyde on neurite outgrowth in neuroblastoma Neuro2a cells. Neurochem Int 2019; 131:104579. [PMID: 31614166 DOI: 10.1016/j.neuint.2019.104579] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 11/26/2022]
Abstract
Neurite outgrowth is the differentiation process by which neurons establish synapses. In the dentate gyrus of the hippocampus, new neurons are constantly produced and undergo neurite outgrowth to form synapses, and this process is involved in cognitive ability. Therefore, if an agent could modulate neurite outgrowth, it could potentially be developed as a compound for modulating cognitive ability. In this study, we examined whether coniferaldehyde, a natural compound, regulates neurite outgrowth in Neuro2a cells. We ascertained morphological changes and measured the percentage of neurite-bearing cells and neurite lengths. Coniferaldehyde significantly increased the percentage of neurite-bearing cells, and the length of neurites in a concentration-dependent manner, without inducing cell death. We then have identified that, coniferaldehyde activates the extracellular signals-regulated Kinase 1 and 2 (ERK1/2), and further noted that, U0126, an ERK1/2 inhibitor, blocks coniferaldehyde-facilitated neurite outgrowth. Moreover, Subchronic administration of CA enhanced learning and memory, and increased neurite length of newborn neurons in the hippocampus. These results suggest that coniferaldehyde induces neurite outgrowth by a process possibly mediated by ERK1/2 signaling and enhances learning and memory.
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Affiliation(s)
- Jieun Jeon
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea
| | - Huiyoung Kwon
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea
| | - Eunbi Cho
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea
| | - Kyung Sook Kim
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea
| | - Jeanho Yun
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, 49201, Republic of Korea; Institute of Convergence Bio-Health, Dong-A University, Busan, 49315, Republic of Korea
| | - Young Choon Lee
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea; Institute of Convergence Bio-Health, Dong-A University, Busan, 49315, Republic of Korea
| | - Dong Hyun Kim
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea; Institute of Convergence Bio-Health, Dong-A University, Busan, 49315, Republic of Korea.
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Lee HR, Kong SY, Sung SH, Kim HJ. DA-9801 and its saponins, dioscin and protodioscin, protect primary cortical neurons from hyperglycemia-induced neurotoxicity. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.01.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Meyer M, Berger I, Winter J, Jurek B. Oxytocin alters the morphology of hypothalamic neurons via the transcription factor myocyte enhancer factor 2A (MEF-2A). Mol Cell Endocrinol 2018; 477:156-162. [PMID: 29928931 DOI: 10.1016/j.mce.2018.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/18/2018] [Accepted: 06/16/2018] [Indexed: 01/22/2023]
Abstract
Oxytocin (OT) has gained attention not only as anxiolytic drug and as potential treatment option for autistic children; it also acts as a growth and differentiation factor in neuronal cells. While behavioral effects of OT have been studied in detail, knowledge about the cellular effects of OT is relatively sparse. In this study, we present evidence for three hypotheses: 1) OT leads to neurite retraction in hypothalamic neurons via the OT receptor (OTR) 2) The transcription factor MEF-2A is a central regulator of OT-induced neurite retraction, and 3) The MAPK pathway is critical for OT-induced MEF-2A activation. Incubation of rat hypothalamic H32 cells with 10 nM to 1 μM OT, vasopressin, and the specific OTR agonist TGOT, over the course of 12 h resulted in a time-dependent, significant retraction of neurites. In addition, the size of the nuclear compartment increased, whereas the overall cell size remained unchanged. OT treatment for 10 h increased the cellular viability significantly, and this effect could be blocked by a specific OTR antagonist, providing evidence for a specific and pro-active effect of OT on neurite retraction, and not as an unspecific side effect of apoptosis. The molecular mechanism that controls OT-induced neurite retraction includes a reduced phosphorylation of the transcription factor MEF-2A at Serine 408 (S408). This dephosphorylation is under the control of the OTR-coupled MAPK pathway, as blocking MEK1/2 by U0126 inhibited MEF-2A activation and subsequent neurite retraction. The siRNA-mediated knockdown of MEF-2A prevented the OT-induced neurite retraction, providing direct evidence for a role of MEF-2A in morphological alterations induced by OT treatment. In summary, the present study reveals a previously unknown OTR-coupled MAPK-MEF-2A pathway, which is responsible for OT-induced neurite retraction of hypothalamic neurons.
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Affiliation(s)
- Magdalena Meyer
- Department of Behavioral and Molecular Neurobiology, University of Regensburg, Regensburg, Germany.
| | - Ilona Berger
- Department of Behavioral and Molecular Neurobiology, University of Regensburg, Regensburg, Germany; Technische Universität Dresden, University Hospital, Department of Internal Medicine III, Dresden, Germany
| | - Julia Winter
- Department of Behavioral and Molecular Neurobiology, University of Regensburg, Regensburg, Germany
| | - Benjamin Jurek
- Department of Behavioral and Molecular Neurobiology, University of Regensburg, Regensburg, Germany
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Zhang Z, Liu Y, Zhu X, Wei L, Zhu J, Shi K, Wang G, Pan L. Sciatic nerve leachate of cattle causes neuronal differentiation of PC12 cells via ERK1/2 signaling pathway. J Vet Sci 2018; 19:512-518. [PMID: 29695145 PMCID: PMC6070593 DOI: 10.4142/jvs.2018.19.4.512] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 04/23/2018] [Indexed: 12/24/2022] Open
Abstract
Previous studies have shown that the sciatic nerve has neurotrophic activity, and nerve regeneration, differentiation, and axon outgrowth can be modulated by different sciatic nerve preparations. However, numerous animals may have to be sacrificed to obtain enough sciatic nerves to make a sciatic nerve preparation. Some studies have demonstrated that the role of sciatic nerve preparations in neural differentiation depends on the neurotrophins that Schwann cells secrete, and these factors are highly conserved among different species. To reduce the use of experimental animals, in this study, we made a leachate by using the sciatic nerve of cattle and explored its effect on neuronal differentiation of rat PC12 cells (a useful model for studying neuronal differentiation). Results showed the neurite outgrowth of PC12 cells treated with the cattle sciatic nerve leachate for 3, 6, and 9 days was significantly improved, and the expressions of β3-tubulin and microtubule-associated protein 2 (two neuron-specific proteins) were increased. Moreover, the ERK1/2 signaling pathway was activated after PC12 cells were incubated with cattle sciatic nerve leachate for 9 days. Thus, a sciatic nerve leachate obtained from cattle can effectively induce neuronal differentiation of rat PC12 cells via ERK1/2 signaling pathway.
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Affiliation(s)
- Ziqiang Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Yumei Liu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Xuemin Zhu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Lan Wei
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Jiamin Zhu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Ke Shi
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Guotao Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Li Pan
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, China
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The Tenascin-C-Derived Peptide VSWRAPTA Promotes Neuronal Branching Via Transcellular Activation of the Focal Adhesion Kinase (FAK) and the ERK1/2 Signaling Pathway In Vitro. Mol Neurobiol 2018; 56:632-647. [DOI: 10.1007/s12035-018-1108-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 05/03/2018] [Indexed: 12/27/2022]
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12
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Li X, Guo C, Li Y, Li L, Wang Y, Zhang Y, Li Y, Chen Y, Liu W, Gao L. Ketamine administered pregnant rats impair learning and memory in offspring via the CREB pathway. Oncotarget 2018; 8:32433-32449. [PMID: 28430606 PMCID: PMC5464800 DOI: 10.18632/oncotarget.15405] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 01/27/2017] [Indexed: 12/11/2022] Open
Abstract
Ketamine has been reported to impair the capacity for learning and memory. This study examined whether these capacities were also altered in the offspring and investigated the role of the CREB signaling pathway in pregnant rats, subjected to ketamine-induced anesthesia. On the 14th day of gestation (P14), female rats were anesthetized for 3 h via intravenous ketamine injection (200 mg/Kg). Morris water maze task, contextual and cued fear conditioning, and olfactory tasks were executed between the 25th to 30th day after birth (B25-30) on rat pups, and rats were sacrificed on B30. Nerve density and dendritic spine density were examined via Nissl’s and Golgi staining. Simultaneously, the contents of Ca2+/Calmodulin-Dependent Protein Kinase II (CaMKII), p-CaMKII, CaMKIV, p-CaMKIV, Extracellular Regulated Protein Kinases (ERK), p-ERK, Protein Kinase A (PKA), p-PKA, cAMP-Response Element Binding Protein (CREB), p-CREB, and Brain Derived Neurotrophic Factor (BDNF) were detected in the hippocampus. We pretreated PC12 cells with both PKA inhibitor (H89) and ERK inhibitor (SCH772984), thus detecting levels of ERK, p-ERK, PKA, p-PKA, p-CREB, and BDNF. The results revealed that ketamine impaired the learning ability and spatial as well as conditioned memory in the offspring, and significantly decreased the protein levels of ERK, p-ERK, PKA, p-PKA, p-CREB, and BDNF. We found that ERK and PKA (but not CaMKII or CaMKIV) have the ability to regulate the CREB-BDNF pathway during ketamine-induced anesthesia in pregnant rats. Furthermore, ERK and PKA are mutually compensatory for the regulation of the CREB-BDNF pathway.
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Affiliation(s)
- Xinran Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Cen Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yanan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Lina Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yuxin Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yiming Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yue Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yu Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Wenhan Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Li Gao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
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Conde MA, Alza NP, Iglesias González PA, Scodelaro Bilbao PG, Sánchez Campos S, Uranga RM, Salvador GA. Phospholipase D1 downregulation by α-synuclein: Implications for neurodegeneration in Parkinson's disease. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1863:639-650. [PMID: 29571767 DOI: 10.1016/j.bbalip.2018.03.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 03/14/2018] [Accepted: 03/18/2018] [Indexed: 11/17/2022]
Abstract
We have previously shown that phospholipase D (PLD) pathways have a role in neuronal degeneration; in particular, we found that PLD activation is associated with synaptic injury induced by oxidative stress. In the present study, we investigated the effect of α-synuclein (α-syn) overexpression on PLD signaling. Wild Type (WT) α-syn was found to trigger the inhibition of PLD1 expression as well as a decrease in ERK1/2 phosphorylation and expression levels. Moreover, ERK1/2 subcellular localization was shown to be modulated by WT α-syn in a PLD1-dependent manner. Indeed, PLD1 inhibition was found to alter the neurofilament network and F-actin distribution regardless of the presence of WT α-syn. In line with this, neuroblastoma cells expressing WT α-syn exhibited a degenerative-like phenotype characterized by a marked reduction in neurofilament light subunit (NFL) expression and the rearrangement of the F-actin organization, compared with either the untransfected or the empty vector-transfected cells. The gain of function of PLD1 through the overexpression of its active form had the effect of restoring NFL expression in WT α-syn neurons. Taken together, our findings reveal an unforeseen role for α-syn in PLD regulation: PLD1 downregulation may constitute an early mechanism in the initial stages of WT α-syn-triggered neurodegeneration.
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Affiliation(s)
- Melisa A Conde
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Argentina; Departamento de Biología, Bioquímica y Farmacia-Universidad Nacional del Sur (UNS), Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Natalia P Alza
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Argentina; Departamento de Química-UNS, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Pablo A Iglesias González
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Paola G Scodelaro Bilbao
- Departamento de Biología, Bioquímica y Farmacia-Universidad Nacional del Sur (UNS), Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Sofía Sánchez Campos
- Departamento de Biología, Bioquímica y Farmacia-Universidad Nacional del Sur (UNS), Argentina
| | - Romina M Uranga
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Argentina; Departamento de Biología, Bioquímica y Farmacia-Universidad Nacional del Sur (UNS), Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Gabriela A Salvador
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Argentina; Departamento de Biología, Bioquímica y Farmacia-Universidad Nacional del Sur (UNS), Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina.
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Kang KB, Ryu J, Cho Y, Choi SZ, Son M, Sung SH. Combined Application of UHPLC-QTOF/MS, HPLC-ELSD and 1 H-NMR Spectroscopy for Quality Assessment of DA-9801, A Standardised Dioscorea Extract. PHYTOCHEMICAL ANALYSIS : PCA 2017; 28:185-194. [PMID: 27910174 DOI: 10.1002/pca.2659] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/27/2016] [Accepted: 10/07/2016] [Indexed: 06/06/2023]
Abstract
INTRODUCTION DA-9801, a standardised 50% aqueous ethanolic extract of a mixture of Dioscorea japonica and D. nipponica, is a botanical drug candidate for the treatment of diabetic neuropathy, which finished its US phase II clinical trials recently. An advanced quality control method is needed for further development of DA-9801, considering its high contents of both primary and secondary metabolites. OBJECTIVE Development of a quality assessment strategy for DA-9801, based on the combination of UHPLC-QTOF/MS, HPLC-ELSD, and 1 H-NMR spectroscopy. METHODS The method was developed and tested with 15 batch products of DA-9801. The steroidal saponins of DA-9801 were tentatively identified by UHPLC-QTOF/MS and were quantified with the validated HPLC-ELSD method. Primary metabolites of DA-9801 were identified and profiled using 1 H-NMR spectrometry. The batch-to-batch equivalence of DA-9801 was tested with the 1 H-NMR spectra using spectral binning, correlation analysis, and principal component analysis. RESULTS Six major saponins of DA-9801 were tentatively identified by UHPLC-QTOF/MS. Among them, protodioscin and dioscin were quantified by the validated HPLC-ELSD method. Twenty-six metabolites were identified in 1 H-NMR spectra. The similarity between DA-9801 batches could be evaluated with the NMR spectra of DA-9801. The 1 H-NMR method also revealed that two Dioscorea species contributed distinct amino acids to the contents of DA-9801. CONCLUSION This study validates the effectiveness of UHPLC-QTOF/MS, HPLC-ELSD, and 1 H NMR-combined method for quality control of DA-9801 and its crude materials. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Kyo Bin Kang
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jayoung Ryu
- Research Planning & Management Department, Dong-A ST Co., Ltd., Yongin, 17073, Republic of Korea
| | - Youngwoong Cho
- Research Planning & Management Department, Dong-A ST Co., Ltd., Yongin, 17073, Republic of Korea
| | - Sang-Zin Choi
- Research Planning & Management Department, Dong-A ST Co., Ltd., Yongin, 17073, Republic of Korea
| | - Miwon Son
- Research Planning & Management Department, Dong-A ST Co., Ltd., Yongin, 17073, Republic of Korea
| | - Sang Hyun Sung
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul, 08826, Republic of Korea
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15
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Back MJ, Lee HK, Lee JH, Fu Z, Son MW, Choi SZ, Go HS, Yoo S, Hwang SW, Kim DK. P2X1 Receptor-Mediated Ca 2+ Influx Triggered by DA-9801 Potentiates Nerve Growth Factor-Induced Neurite Outgrowth. ACS Chem Neurosci 2016; 7:1488-1498. [PMID: 27442785 DOI: 10.1021/acschemneuro.6b00082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Nerve growth factor (NGF)-induced neuronal regeneration has emerged as a strategy to treat neuronal degeneration-associated disorders. However, direct NGF administration is limited by the occurrence of adverse effects at high doses of NGF. Therefore, development of a therapeutic strategy to promote the NGF trophic effect is required. In view of the lack of understanding of the mechanism for potentiating the NGF effect, this study investigated molecular targets of DA-9801, a well-standardized Dioscorea rhizome extract, which has a promoting effect on NGF. An increase in intracellular calcium ion level was induced by DA-9801, and chelation of extracellular calcium ions with ethylene-bis(oxyethylenenitrilo)tetraacetic acid (EGTA) suppressed the potentiating effect of DA-9801 on NGF-induced neurite outgrowth. In addition, EGTA treatment reduced the DA-9801-induced phosphorylation of extracellular signal-regulated kinase1/2 (ERK1/2), the major mediators of neurite outgrowth. To find which calcium ion-permeable channel contributes to the calcium ion influx induced by DA-9801, we treated PC12 cells with various inhibitors of calcium ion-permeable channels. NF449, a P2X1 receptor selective antagonist, significantly abolished the potentiating effect of DA-9801 on NGF-induced neurite outgrowth and abrogated the DA-9801-induced ERK1/2 phosphorylation. In addition, transfection with siRNA of P2X1 receptor significantly reduced the DA-9801-enhanced neurite outgrowth. In conclusion, calcium ion influx through P2X1 receptor mediated the promoting effect of DA-9801 on NGF-induced neurite outgrowth via ERK1/2 phosphorylation.
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Affiliation(s)
- Moon Jung Back
- Department
of Environmental and Health Chemistry, College of Pharmacy, Chung-Ang University; 84 Heukseok-ro, Dongjak-Ku, Seoul 06974, Republic of Korea
| | - Hae Kyung Lee
- Department
of Environmental and Health Chemistry, College of Pharmacy, Chung-Ang University; 84 Heukseok-ro, Dongjak-Ku, Seoul 06974, Republic of Korea
| | - Joo Hyun Lee
- Department
of Environmental and Health Chemistry, College of Pharmacy, Chung-Ang University; 84 Heukseok-ro, Dongjak-Ku, Seoul 06974, Republic of Korea
| | - Zhicheng Fu
- Department
of Environmental and Health Chemistry, College of Pharmacy, Chung-Ang University; 84 Heukseok-ro, Dongjak-Ku, Seoul 06974, Republic of Korea
| | - Mi Won Son
- Department of Research Planning & Management, Research Center of Dong-A ST Co., Ltd.; 21 Geumhwa-ro, 105 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do 446-905, Republic of Korea
| | - Sang Zin Choi
- Department of Research Planning & Management, Research Center of Dong-A ST Co., Ltd.; 21 Geumhwa-ro, 105 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do 446-905, Republic of Korea
| | - Hyo Sang Go
- Department of Research Planning & Management, Research Center of Dong-A ST Co., Ltd.; 21 Geumhwa-ro, 105 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do 446-905, Republic of Korea
| | - Sungjae Yoo
- Department
of Biomedical Sciences, Korea University College of Medicine, Seoul 136-705, Republic of Korea
| | - Sun Wook Hwang
- Department
of Biomedical Sciences, Korea University College of Medicine, Seoul 136-705, Republic of Korea
| | - Dae Kyong Kim
- Department
of Environmental and Health Chemistry, College of Pharmacy, Chung-Ang University; 84 Heukseok-ro, Dongjak-Ku, Seoul 06974, Republic of Korea
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