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Kim EH, Lee WS, Lee JH, Kwon DR. Microcurrent therapy as the nonpharmacological new protocol against Alzheimer's disease. Front Aging Neurosci 2024; 16:1344072. [PMID: 38304741 PMCID: PMC10833500 DOI: 10.3389/fnagi.2024.1344072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 01/09/2024] [Indexed: 02/03/2024] Open
Abstract
Introduction Alzheimer's disease (AD) poses an increasing global health challenge and is marked by gradual cognitive deterioration, memory impairment, and neuroinflammation. Innovative therapeutic approaches as non-pharmacological protocol are urgently needed with side effect risk of drugs. Microcurrent therapy, a non-invasive modality involving low-level electrical currents, has emerged as a potential solution to address AD's complex pathogenesis. This study investigates the optimal application of microcurrent therapy as a clinical protocol for AD, utilizing a comprehensive approach that integrates behavioral assessments and neuroinflammation evaluation in a mouse model of dementia. Methods and results The results reveal that microcurrent therapy holds promise in ameliorating memory impairment and reducing neuroinflammation in AD. Behavioral assessments, including the Novel Object Recognition Test (NOR) and Radial Arm Maze Test (RAM), demonstrated improved cognitive function following microcurrent therapy. Furthermore, microcurrent therapy inhibited expression of neuroinflammatory proteins, including ionized calcium binding adaptor molecule 1 (Iba1), and glial fibrillary acidic protein (GFAP) in current-treated group. Mechanistic insights suggest that microcurrent therapy may modulate neuroinflammation through the regulation of MAPK signaling pathways. Conclusion This study emphasizes the prospect of microcurrent therapy as a safe and efficacious non-pharmacological strategy for Alzheimer's disease (AD), providing optimism to the countless individuals impacted by this debilitating ailment. These results contribute to the developments of an innovative clinical protocol for AD and recovery from neurological injury, underscoring the significance of investigating unconventional therapeutic approaches for addressing this complex condition.
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Affiliation(s)
- Eun Ho Kim
- Department of Biochemistry, School of Medicine, Daegu Catholic University, Daegu, Republic of Korea
| | - Won Seok Lee
- Department of Biochemistry, School of Medicine, Daegu Catholic University, Daegu, Republic of Korea
| | - Jae Hee Lee
- Department of Rehabilitation Medicine, School of Medicine, Daegu Catholic University, Daegu, Republic of Korea
| | - Dong Rak Kwon
- Department of Rehabilitation Medicine, School of Medicine, Daegu Catholic University, Daegu, Republic of Korea
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2
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Lim HS, Park G. Artemisinin protects dopaminergic neurons against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced neurotoxicity in a mouse model of Parkinson's disease. Biomed Pharmacother 2024; 170:115972. [PMID: 38056239 DOI: 10.1016/j.biopha.2023.115972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 12/08/2023] Open
Abstract
Artemisinin is an antimalarial drug that has been used for almost half a century. However, the anti-Parkinson's disease (PD) effects of artemisinin with respect to 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced oxidative stress have not yet been investigated while focusing on NF-E2-related factor 2 (Nrf2) signaling. Thus, we sought to assess the behavioral and oxidative mechanistic effects of artemisinin on MPTP-induced toxicity via the Nrf2 signaling pathway. We explored this through immunohistochemical assays, ELISA, in differentiated PC12 cells treated with siRNA, and with a PD mouse model. Artemisinin increased Nrf2 DNA-binding activity and HO-1 and NQO1 expression. Artemisinin treatment protected cells against MPP+ -induced neuronal death signaling, including NADH dehydrogenase activity, reactive oxygen species, mitochondrial membrane potential, and cleaved caspase-3. Moreover, it protected cells against MPTP-induced behavioral impairments and significantly reduced dopaminergic neuronal loss. Additionally, Nrf2 pre-inhibition using ML385 neutralized the inhibitory effects of artemisinin on dopaminergic neuronal damage and behavioral impairments induced by MPTP. Our results suggest that artemisinin inhibits MPTP-induced behavioral and neurotoxic effects in mice. This provides a foundation for further research to evaluate artemisinin as a potential therapeutic agent for PD.
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MESH Headings
- Rats
- Mice
- Animals
- Parkinson Disease/drug therapy
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/metabolism
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/pharmacology
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/therapeutic use
- Dopaminergic Neurons
- NF-E2-Related Factor 2/metabolism
- Neuroprotective Agents/pharmacology
- Neuroprotective Agents/therapeutic use
- Neuroprotective Agents/metabolism
- Neurotoxicity Syndromes/metabolism
- Artemisinins/pharmacology
- Artemisinins/therapeutic use
- Mice, Inbred C57BL
- Disease Models, Animal
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Affiliation(s)
- Hye-Sun Lim
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju-si, Jeollanam-do 58245, Republic of Korea
| | - Gunhyuk Park
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju-si, Jeollanam-do 58245, Republic of Korea; University of Science & Technology (UST), Korean Convergence Medicine Major, Campus of Korea Institute of Oriental Medicine, Daejeon 34113, Republic of Korea.
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3
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Pérez MJ, Carden TR, Dos Santos Claro PA, Silberstein S, Páez PM, Cheli VT, Correale J, Pasquini JM. Transferrin Enhances Neuronal Differentiation. ASN Neuro 2023; 15:17590914231170703. [PMID: 37093743 PMCID: PMC10134178 DOI: 10.1177/17590914231170703] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023] Open
Abstract
Although transferrin (Tf) is a glycoprotein best known for its role in iron delivery, iron-independent functions have also been reported. Here, we assessed apoTf (aTf) treatment effects on Neuro-2a (N2a) cells, a mouse neuroblastoma cell line which, once differentiated, shares many properties with neurons, including process outgrowth, expression of selective neuronal markers, and electrical activity. We first examined the binding of Tf to its receptor (TfR) in our model and verified that, like neurons, N2a cells can internalize Tf from the culture medium. Next, studies on neuronal developmental parameters showed that Tf increases N2a survival through a decrease in apoptosis. Additionally, Tf accelerated the morphological development of N2a cells by promoting neurite outgrowth. These pro-differentiating effects were also observed in primary cultures of mouse cortical neurons treated with aTf, as neurons matured at a higher rate than controls and showed a decrease in the expression of early neuronal markers. Further experiments in iron-enriched and iron-deficient media showed that Tf preserved its pro-differentiation properties in N2a cells, with results hinting at a modulatory role for iron. Moreover, N2a-microglia co-cultures revealed an increase in IL-10 upon aTf treatment, which may be thought to favor N2a differentiation. Taken together, these findings suggest that Tf reduces cell death and favors the neuronal differentiation process, thus making Tf a promising candidate to be used in regenerative strategies for neurodegenerative diseases.
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Affiliation(s)
- María Julia Pérez
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Tomas Roberto Carden
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Paula Ayelen Dos Santos Claro
- Instituto de Investigación en Biomedicina de Buenos Aires (IBIoBA), CONICET-Partner Institute of The Max Plank Society, Buenos Aires, Argentina
| | - Susana Silberstein
- Instituto de Investigación en Biomedicina de Buenos Aires (IBIoBA), CONICET-Partner Institute of The Max Plank Society, Buenos Aires, Argentina
| | - Pablo Martin Páez
- Department of Pharmacology and Toxicology, Jacobs School of Medicine and Biomedical Sciences, Institute for Myelin and Glia Exploration, State University of New York at Buffalo, Buffalo, New York, USA
| | - Veronica Teresita Cheli
- Department of Pharmacology and Toxicology, Jacobs School of Medicine and Biomedical Sciences, Institute for Myelin and Glia Exploration, State University of New York at Buffalo, Buffalo, New York, USA
| | - Jorge Correale
- Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
- Departamento de Neurología, Fleni, Buenos Aires, Argentina
| | - Juana M Pasquini
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
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Lee WS, Lee HJ, Yang JY, Shin HL, Choi SW, Kim JK, Seo WD, Kim EH. The Potential Neuroprotective Effects of Extracts from Oat Seedlings against Alzheimer's Disease. Nutrients 2022; 14:4103. [PMID: 36235754 PMCID: PMC9571310 DOI: 10.3390/nu14194103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/19/2022] [Accepted: 09/27/2022] [Indexed: 11/22/2022] Open
Abstract
The physiological or dietary advantages of germinated grains have been the subject of numerous discussions over the past decade. Around 23 million tons of oats are consumed globally, making up a sizeable portion of the global grain market. Oat seedlings contain more protein, beta-glucan, free amino acids, and phenolic compounds than seeds. The progressive neurodegenerative disorder of Alzheimer's is accompanied by worsening memory and cognitive function. A key indicator of this disorder is the unusual buildup of amyloid-beta protein (or Aβ) in human brains. In this context, oat seedling extract (OSE) has been identified as a new therapeutic candidate for AD, due to its antioxidant activity and AD-specific mechanism of action. This study directly investigated how OSE affected AD and its impacts by examining the cognitive function and exploring the inflammatory response mechanism. The dried oat seedlings were grounded finely with a grinder, inserted with 50% fermented ethanol 10 times (w/v), and extracted by stirring for 10 h at 45 °C. After filtering the extract by 0.22 um filter, some of it was used for UHPLC analysis. The results indicated that the treatment with OSE protects against Aβ25-35-induced cytotoxicity in BV2 cells. Tg-5Xfad AD mice had strong deposition of Aβ throughout their brains, while WT mice did not exhibit any such deposition within their brains. A drastic reduction was observed in terms of numbers, as well as the size, of Aβ plaques within Tg-5Xfad AD mice exposed to OSE. This study indicated OSE's neuroprotective impacts against neurodegeneration, synaptic dysfunction, and neuroinflammation induced by amyloid-beta. Our results suggest that OSE acts as a neuroprotective agent to combat AD-specific apoptotic cell death, neuroinflammation, amyloid-beta accumulation, as well as synaptic dysfunction in AD mice's brains. Furthermore, the study indicated that OSE treatment affects JNK/ERK/p38 MAPK signaling, with considerable inhibition in p-JNK, p-p38, and p-ERK levels seen in the brain of OSE-treated Tg-5Xfad AD mice.
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Affiliation(s)
- Won Seok Lee
- Department of Biochemistry, School of Medicine, Daegu Catholic University, Nam-gu, Daegu 42472, Korea
| | - Hae-June Lee
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
| | - Ji Yeong Yang
- Division of Crop Foundation, National Institute of Crop Science, Rural Development Administration, Jellabuk-do, Deokjin-gu, Jeonju 55365, Korea
| | - Hye-Lim Shin
- Forest Biomaterials Research Center, National Institute of Forest Science (NIFoS), Korea Forest Service (KFS), Jinju 52817, Korea
| | - Sik-Won Choi
- Forest Biomaterials Research Center, National Institute of Forest Science (NIFoS), Korea Forest Service (KFS), Jinju 52817, Korea
| | - Jong-Ki Kim
- Department of Biomedical Engineering & Radiology, School of Medicine, Daegu Catholic University, Daegu 42472, Korea
| | - Woo Duck Seo
- Division of Crop Foundation, National Institute of Crop Science, Rural Development Administration, Jellabuk-do, Deokjin-gu, Jeonju 55365, Korea
| | - Eun Ho Kim
- Department of Biochemistry, School of Medicine, Daegu Catholic University, Nam-gu, Daegu 42472, Korea
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5
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Wang J, Yin J, Zheng X. Artemisinin upregulates neural cell adhesion molecule L1 to attenuate neurological deficits after intracerebral hemorrhage in mice. Brain Behav 2022; 12:e2558. [PMID: 35349764 PMCID: PMC9120716 DOI: 10.1002/brb3.2558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/29/2022] [Accepted: 03/05/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND AND PURPOSE Intracerebral hemorrhage (ICH) is a subtype of stroke and results in neurological deficits in patients without any effective treatments. Artemisinin (ART), a well-known antimalarial Chinese medicine, exerts multiple essential roles in the central and peripheral nervous system due to its antioxidative and anti-inflammation properties. Neural cell adhesion molecule L1 (L1CAM, L1) is considered to be implicated in neural development, functional maintenance, and neuroprotection during disease. However, whether these two essential molecules are neuroprotective in ICH remains unclear. METHODS Therefore, the present study investigated the influence of ART on the recovery of neurological deficits in a mouse model of ICH induced by collagenase and the underlying mechanism. RESULTS It was revealed that ART is capable of upregulating L1 expression to alleviate brain edema, reduce oxidative stress, and inhibit inflammation to alleviate ICH-induced brain injury to improve the neurological outcome in mice suffering from ICH. CONCLUSION These results may lay the foundation for ART to be a novel candidate treatment for ICH.
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Affiliation(s)
- Jianjiang Wang
- Department of Neurosurgery, General Hospital of Xinjiang Military Region, Urumqi, China
| | - Jie Yin
- Department of Neurosurgery, General Hospital of Xinjiang Military Region, Urumqi, China
| | - Xi Zheng
- Department of Neurosurgery, General Hospital of Xinjiang Military Region, Urumqi, China
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6
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Chatterjee O, Gopalakrishnan L, Mol P, Advani J, Nair B, Shankar SK, Mahadevan A, Prasad TSK. The Normal Human Adult Hypothalamus Proteomic Landscape: Rise of Neuroproteomics in Biological Psychiatry and Systems Biology. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2021; 25:693-710. [PMID: 34714154 DOI: 10.1089/omi.2021.0158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The human hypothalamus is central to the regulation of neuroendocrine and neurovegetative systems, as well as modulation of chronobiology and behavioral aspects in human health and disease. Surprisingly, a deep proteomic analysis of the normal human hypothalamic proteome has been missing for such an important organ so far. In this study, we delineated the human hypothalamus proteome using a high-resolution mass spectrometry approach which resulted in the identification of 5349 proteins, while a multiple post-translational modification (PTM) search identified 191 additional proteins, which were missed in the first search. A proteogenomic analysis resulted in the discovery of multiple novel protein-coding regions as we identified proteins from noncoding regions (pseudogenes) and proteins translated from short open reading frames that can be missed using the traditional pipeline of prediction of protein-coding genes as a part of genome annotation. We also identified several PTMs of hypothalamic proteins that may be required for normal hypothalamic functions. Moreover, we observed an enrichment of proteins pertaining to autophagy and adult neurogenesis in the proteome data. We believe that the hypothalamic proteome reported herein would help to decipher the molecular basis for the diverse range of physiological functions attributed to it, as well as its role in neurological and psychiatric diseases. Extensive proteomic profiling of the hypothalamic nuclei would further elaborate on the role and functional characterization of several hypothalamus-specific proteins and pathways to inform future research and clinical discoveries in biological psychiatry, neurology, and system biology.
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Affiliation(s)
- Oishi Chatterjee
- Institute of Bioinformatics, Bangalore India.,Amrita School of Biotechnology, Amrita University, Kollam, India.,Center for Systems Biology and Molecular Medicine, Yenepoya Research Center, Yenepoya (Deemed to be University), Mangalore, India
| | - Lathika Gopalakrishnan
- Institute of Bioinformatics, Bangalore India.,Center for Systems Biology and Molecular Medicine, Yenepoya Research Center, Yenepoya (Deemed to be University), Mangalore, India.,Manipal Academy of Higher Education, Manipal, India
| | - Praseeda Mol
- Institute of Bioinformatics, Bangalore India.,Amrita School of Biotechnology, Amrita University, Kollam, India
| | | | - Bipin Nair
- Amrita School of Biotechnology, Amrita University, Kollam, India
| | - Susarla Krishna Shankar
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, India.,Human Brain Tissue Repository, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Anita Mahadevan
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, India.,Human Brain Tissue Repository, National Institute of Mental Health and Neurosciences, Bangalore, India
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7
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ERK/MAPK signalling in the developing brain: Perturbations and consequences. Neurosci Biobehav Rev 2021; 131:792-805. [PMID: 34634357 DOI: 10.1016/j.neubiorev.2021.10.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 09/26/2021] [Accepted: 10/05/2021] [Indexed: 12/18/2022]
Abstract
The extracellular regulated kinase/microtubule-associated protein kinase (ERK/MAPK) signalling pathway transduces signals that cause an alteration in the ongoing metabolic pathways and modifies gene expression patterns; thus, influencing cellular behaviour. ERK/MAPK signalling is essential for the proper development of the nervous system from neural progenitor cells derived from the embryonic mesoderm. Several signalling molecules that regulate the well-coordinated process of neurodevelopment transduce developmental information through the ERK/MAPK signalling pathway. The ERK/MAPK is a potential novel therapeutic target in several neurodevelopmental disorders, however, despite years of study, there is still significant uncertainty about the exact mechanism by which the ERK/MAPK signalling pathway elicits specific responses in neurodevelopment. Here, we will review the evidence highlighting the role of ERK/MAPK signalling in neurodevelopment. We will also discuss the structural implication and behavioural deficits associated with perturbed ERK/MAPK signalling pathway in cortical development, whilst examining its contribution to the neuropathology of several neurodevelopmental disorders, such as Autism Spectrum Disorder, Schizophrenia, Fragile X, and Attention Deficit Hyperactive Disorder.
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Chen S, Wu L, He B, Zhou G, Xu Y, Zhu G, Xie J, Chen S, Yao L, Huang J, Wu H, Xiao Z. Artemisinin Facilitates Motor Function Recovery by Enhancing Motoneuronal Survival and Axonal Remyelination in Rats Following Brachial Plexus Root Avulsion. ACS Chem Neurosci 2021; 12:3148-3156. [PMID: 34465091 DOI: 10.1021/acschemneuro.1c00120] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Artemisinin (ART), a well-known antimalarial medicine originally isolated from the plant Artemisia annua, exerts neuroprotective effects in the nervous system owing to an antioxidant effect. Here, we determined whether ART is capable of inhibiting the oxidative stress to enhance motoneuronal (MN) survival to promote motor function recovery of rats following brachial plexus root avulsion (BPRA) with reimplantation surgery. Rats following BPRA and reimplantation were subcutaneously injected with 500 μL of PBS or 16 mg/mL ART once daily for 7 days after surgery. Terzis grooming test (TGT), histochemical staining, real-time polymerase chain reaction, and Western blot were conducted to determine the recovery of motor function of the upper limb, the survival rate of MNs, the oxidative stress levels in the ventral horn of the spinal cord, the morphology of abnormal musculocutaneous nerve fibers, the remyelination of axons in musculocutaneous nerves, and the degree of bicep atrophy. ART significantly increased TGT score, improved the survival of MNs, inhibited the oxidative stress, ameliorated the abnormal morphology of fibers in the musculocutaneous nerve, promoted the remyelination of axons, and alleviated muscle atrophy. Take together, ART can improve the survival of MNs and axonal remyelination to promote the motor function recovery via inhibiting oxidative stress, suggesting that ART may represent a new approach to the therapy of spinal root avulsion.
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Affiliation(s)
- Shuangxi Chen
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Lin Wu
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Bing He
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Guijuan Zhou
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Yan Xu
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Guanghua Zhu
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Juan Xie
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Shuangqin Chen
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Lan Yao
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Jianghua Huang
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Heng Wu
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Zijian Xiao
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
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Khongsti K, Pasupuleti BG, Das B, Bez G. 1,2,3-Triazole tethered 1,2,4‑trioxane trimer induces apoptosis in metastatic cancer cells and inhibits their proliferation, migration and invasion. Bioorg Chem 2021; 112:104952. [PMID: 33971565 DOI: 10.1016/j.bioorg.2021.104952] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 04/20/2021] [Accepted: 04/24/2021] [Indexed: 12/24/2022]
Abstract
Artemisinin (ART) has been in use against different cancer cells and its derivatives and conjugates are more cytotoxic to iron-rich cancer cells. It is desirable to develop easily achievable synthetic 1,2,4-trioxanes having the same pharmacophore as that of ART. To explore more efficient compounds, a 1,2,3-triazole tethered 1,2,4‑trioxane trimer (4T) was synthesized and the anti-cancer effects of ART and 4T on MDA-MB-435 and MDA-MB-231 cells were investigated concerning regulation of osteopontin (OPN) expression, which is associated with cancer progression and malignancy. 1H NMR and 13C NMR, oxidative stress analysis, flow cytometry, western blot, Real-Time PCR, transfections, luciferase assay, cell viability, proliferation, migration and chemotactic invasion assays were used in this study. It was observed that the 4T induced apoptosis by inhibiting Bcl-2 (~0.6-fold) and cleavage of caspase-3 (intrinsic pathway) in these metastatic cancer cells, and also reduced colony formation, migration and invasion of these cancer cells. The treatment of 4T decreased the reduced glutathione level and increased the activities of glucose-6-phosphate dehydrogenase and glutathione reductase in the 4T treated cancer cells as compared to their respective controls. Further, the expression of OPN was diminished (~0.5-fold) by the 4T in these cell lines. It was also observed that the key mitogen-activated protein kinase pathway proteins, mitogen-activated protein kinase kinase1/2 (~1.8-fold) and extracellular signal-regulated kinase1/2 (~16-fold), were also activated following the treatment of the 4T. However, the phosphorylated c-Jun level, a component of activator protein-1, was significantly reduced in these cancer cells upon 4T treatment. Taken together, we hypothesize that 4T may be useful for controlling cancer progression and malignancy.
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Affiliation(s)
- Kitboklang Khongsti
- Department of Zoology, North-Eastern Hill University, Shillong 793022, India
| | | | - Bidyadhar Das
- Department of Zoology, North-Eastern Hill University, Shillong 793022, India.
| | - Ghanashyam Bez
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, India.
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He Y, Xu L, Li Y, Tang Y, Rao S, Lin R, Liu Z, Chen H. Synergistic integration of dihydro-artemisinin with γ-aminobutyric acid results in a more potential anti-depressant. Bioorg Chem 2021; 110:104769. [PMID: 33677247 DOI: 10.1016/j.bioorg.2021.104769] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/09/2021] [Accepted: 02/21/2021] [Indexed: 11/28/2022]
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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Affiliation(s)
- Yepu He
- Institute of Traditional Chinese Medicine and Natural Product, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Liyu Xu
- Institute of Traditional Chinese Medicine and Natural Product, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Yanbing Li
- Institute of Traditional Chinese Medicine and Natural Product, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Yinying Tang
- Institute of Traditional Chinese Medicine and Natural Product, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Shuwen Rao
- Institute of Traditional Chinese Medicine and Natural Product, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Rongtian Lin
- Institute of Traditional Chinese Medicine and Natural Product, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Zhijun Liu
- Institute of Traditional Chinese Medicine and Natural Product, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Heru Chen
- Institute of Traditional Chinese Medicine and Natural Product, College of Pharmacy, Jinan University, Guangzhou 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Guangzhou 510632, PR China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education, School of Pharmacy, Jinan University, Guangzhou 510632, PR China.
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11
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Artemisinin protects motoneurons against axotomy-induced apoptosis through activation of the PKA-Akt signaling pathway and promotes neural stem/progenitor cells differentiation into NeuN + neurons. Pharmacol Res 2020; 159:105049. [PMID: 32598944 DOI: 10.1016/j.phrs.2020.105049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/07/2020] [Accepted: 06/22/2020] [Indexed: 01/21/2023]
Abstract
Brachial plexus axotomy is a common peripheral nerve trauma. Artemisinin, an FDA-approved antimalarial drug, has been described to possess neuroprotective properties. However, the specific mechanisms by which artemisinin protects neurons from axotomy-induced neurotoxicity remain to be elucidated. In this study, we assessed the neuroprotective effects of artemisinin on an experimental animal model of brachial plexus injury and explored the possible mechanisms involved. Artemisinin treatment restored both athletic ability and sensation of the affected upper limb, rescued motoneurons and attenuated the inflammatory response in the ventral horn of the spinal cord. Additionally, artemisinin inhibited the molecular signals of apoptosis, activated signaling pathways related to cell survival and induced NSCPs differentiation into NeuN-positive neurons. Further validation of the involved key signaling molecules, using an in vitro model of hydrogen peroxide-induced neurotoxicity, revealed that both the inhibition of PKA signaling pathway or the silencing of Akt reversed the neuroprotective action of artemisinin on motoneurons. Our results indicate that artemisinin provides neuroprotection against axotomy and hydrogen peroxide-induced neurotoxicity, an effect that might be mediated by the PKA-Akt signaling pathway.
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Lu M, Yi T, Xiong Y, Wang Q, Yin N. Cortex Mori Radicis extract promotes neurite outgrowth in diabetic rats by activating PI3K/AKT signaling and inhibiting Ca2+ influx associated with the upregulation of transient receptor potential canonical channel 1. Mol Med Rep 2019; 21:320-328. [PMID: 31939614 PMCID: PMC6896399 DOI: 10.3892/mmr.2019.10839] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 10/16/2019] [Indexed: 01/16/2023] Open
Abstract
Cortex Mori Radicis extract (CMR) has various pharmacological properties, such as anti‑inflammatory, anti‑allergic and anti‑hyperglycemic effects. However, the effects and mechanisms of CMR in the neuroregeneration of diabetic peripheral neuropathy (DPN) are unclear. In the present study, the effects of CMR on neurite outgrowth of dorsal root ganglia (DRG) neurons in diabetic rats were investigated and its underlying mechanisms were explored. SD rats were subjected to a high‑fat diet with low‑dose streptozotocin to induce a Type II diabetes model with peripheral neuropathy. CMR was then applied for four weeks continuously with or without injection of small interfere (si)RNA targeting the transient receptor potential canonical channel 1 (TRPC1) via the tail vein. Blood glucose levels, the number of Nissl bodies, neurite outgrowth and growth cone turning in DRG neurons were evaluated. The expression of TRPC1 protein, Ca2+ influx and activation of the PI3K/AKT signaling pathway were also investigated. The results of the present study showed that CMR significantly lowered blood glucose levels, reversed the loss of Nissl bodies, induced neurite outgrowth and restored the response of the growth cone of DRG neurons in diabetic rats. CMR exerted neurite outgrowth‑promoting effects by increasing TRPC1 expression, reducing Ca2+ influx and enhancing AKT phosphorylation. siRNA targeting TRPC1 in the CMR group abrogated its anti‑diabetic and neuroregenerative effects, suggesting the involvement of TRPC1 in the biological effects of CMR on DPN.
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Affiliation(s)
- Min Lu
- Department of Histology and Embryology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Tao Yi
- College of Acupuncture and Moxibustion, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Yong Xiong
- College of Acupuncture and Moxibustion, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Qian Wang
- Department of Pathogen Biology, School of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Nina Yin
- Department of Anatomy, School of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
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Dihydroartemisinin Protects against Dextran Sulfate Sodium-Induced Colitis in Mice through Inhibiting the PI3K/AKT and NF- κB Signaling Pathways. BIOMED RESEARCH INTERNATIONAL 2019; 2019:1415809. [PMID: 31781591 PMCID: PMC6875009 DOI: 10.1155/2019/1415809] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 08/17/2019] [Accepted: 09/17/2019] [Indexed: 01/08/2023]
Abstract
Ulcerative colitis is a common inflammatory bowel disease, and the activation of thePI3K/AKT and NF-κB signaling pathways plays a pivotal role in its pathogenesis. Dihydroartemisinin (DHA) is a widely used antimalarial drug and has shown anticancer effect partially through inhibiting the activation of PI3K/AKT and NF-κB. This study aimed to investigate the effect of dihydroartemisinin on ulcerative colitis and its mechanism. Adult male C57 mice were subjected to 3.0% dextran sulfate sodium (DSS) for seven days; simultaneously, dihydroartemisinin or control saline was administered by oral gavage once a day. In vitro, the intestinal epithelial cell-6 was treated with LPS for 24 hours with or without dihydroartemisinin combined with PI3K/Akt activator 740 Y-P or NF-κB activator phorbol myristate acetate. Western blotting was used to test the activation of PI3K/AKT and NF-κB. Dihydroartemisinin significantly ameliorated body weight loss, shortened colon length, and increased DAI in DSS-induced colitis. Meanwhile, histological damage was improved and was accompanied by decreased expression and secretion of proinflammatory cytokines. Moreover, DSS-induced elevation of phosphorylation of PI3K, AKT, IKKα, IκBα, and NF-κB (p65) was remarkably blunted by dihydroartemisinin both in vivo and in vitro, indicating an inhibitive property on the PI3K/AKT and NF-κB signaling pathways. Furthermore, administration of 740 Y-P or PMA significantly blocked protective activity of dihydroartemisinin against colitis in vitro. In conclusion, dihydroartemisinin can attenuate DSS-induced colitis, and its anticolitis effect might be mediated via the PI3K/AKT and NF-κB signaling pathways. DHA might serve as a promising drug for patients with ulcerative colitis.
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14
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Artemisinin Attenuated Hydrogen Peroxide (H 2O 2)-Induced Oxidative Injury in SH-SY5Y and Hippocampal Neurons via the Activation of AMPK Pathway. Int J Mol Sci 2019; 20:ijms20112680. [PMID: 31151322 PMCID: PMC6600327 DOI: 10.3390/ijms20112680] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 01/18/2023] Open
Abstract
Oxidative stress is believed to be one of the main causes of neurodegenerative diseases such as Alzheimer’s disease (AD). The pathogenesis of AD is still not elucidated clearly but oxidative stress is one of the key hypotheses. Here, we found that artemisinin, an anti-malarial Chinese medicine, possesses neuroprotective effects. However, the antioxidative effects of artemisinin remain to be explored. In this study, we found that artemisinin rescued SH-SY5Y and hippocampal neuronal cells from hydrogen peroxide (H2O2)-induced cell death at clinically relevant doses in a concentration-dependent manner. Further studies showed that artemisinin significantly restored the nuclear morphology, improved the abnormal changes in intracellular reactive oxygen species (ROS), reduced the mitochondrial membrane potential, and caspase-3 activation, thereby attenuating apoptosis. Artemisinin also stimulated the phosphorylation of the adenosine monophosphate -activated protein kinase (AMPK) pathway in SH-SY5Y cells in a time- and concentration-dependent manner. Inhibition of the AMPK pathway attenuated the protective effect of artemisinin. These data put together suggested that artemisinin has the potential to protect neuronal cells. Similar results were obtained in primary cultured hippocampal neurons. Cumulatively, these results indicated that artemisinin protected neuronal cells from oxidative damage, at least in part through the activation of AMPK. Our findings support the role of artemisinin as a potential therapeutic agent for neurodegenerative diseases.
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Lu BW, Baum L, So KF, Chiu K, Xie LK. More than anti-malarial agents: therapeutic potential of artemisinins in neurodegeneration. Neural Regen Res 2019; 14:1494-1498. [PMID: 31089038 PMCID: PMC6557089 DOI: 10.4103/1673-5374.255960] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Artemisinin, also called qinghaosu, is originally derived from the sweet wormwood plant (Artemisia annua), which is used in traditional Chinese medicine. Artemisinin and its derivatives (artemisinins) have been widely used for many years as anti-malarial agents, with few adverse side effects. Interestingly, evidence has recently shown that artemisinins might have a therapeutic value for several other diseases beyond malaria, including cancers, inflammatory diseases, and autoimmune disorders. Neurodegeneration is a challenging age-associated neurological disorder characterized by deterioration of neuronal structures as well as functions, whereas neuroinflammation has been considered to be an underlying factor in the development of various neurodegenerative disorders, including Alzheimer's disease. Recently discovered properties of artemisinins suggested that they might be used to treat neurodegenerative disorders by decreasing oxidation, inflammation, and amyloid beta protein (Aβ). In this review, we will introduce artemisinins and highlight the possible mechanisms of their neuroprotective activities, suggesting that artemisinins might have therapeutic potential in neurodegenerative disorders.
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Affiliation(s)
- Bing-Wen Lu
- Department of Ophthalmology, Eye Hospital, China Academy of Chinese Medical Sciences, Beijing; Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administration Region, China
| | - Larry Baum
- State Key Laboratory of Brain and Cognitive Sciences; Center for Genomic Sciences, Li Ka Shing Faculty of Medicine; Department of Psychiatry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Li Ka Shing Faculty of Medicine, Hong Kong Special Administration Region, China
| | - Kwok-Fai So
- Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong; State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong; Center for Genomic Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Li Ka Shing Faculty of Medicine, Hong Kong Special Administration Region; GHM Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province, China
| | - Kin Chiu
- Department of Ophthalmology, Li Ka Shing Faculty of Medicine; State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong Special Administration Region, China
| | - Li-Ke Xie
- Department of Ophthalmology, Eye Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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16
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Resolving neuroinflammation, the therapeutic potential of the anti-malaria drug family of artemisinin. Pharmacol Res 2018; 136:172-180. [DOI: 10.1016/j.phrs.2018.09.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/01/2018] [Accepted: 09/04/2018] [Indexed: 12/15/2022]
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17
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Liang D. A Salutary Role of Reactive Oxygen Species in Intercellular Tunnel-Mediated Communication. Front Cell Dev Biol 2018; 6:2. [PMID: 29503816 PMCID: PMC5821100 DOI: 10.3389/fcell.2018.00002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/18/2018] [Indexed: 12/17/2022] Open
Abstract
The reactive oxygen species, generally labeled toxic due to high reactivity without target specificity, are gradually uncovered as signaling molecules involved in a myriad of biological processes. But one important feature of ROS roles in macromolecule movement has not caught attention until recent studies with technique advance and design elegance have shed lights on ROS signaling for intercellular and interorganelle communication. This review begins with the discussions of genetic and chemical studies on the regulation of symplastic dye movement through intercellular tunnels in plants (plasmodesmata), and focuses on the ROS regulatory mechanisms concerning macromolecule movement including small RNA-mediated gene silencing movement and protein shuttling between cells. Given the premise that intercellular tunnels (bridges) in mammalian cells are the key physical structures to sustain intercellular communication, movement of macromolecules and signals is efficiently facilitated by ROS-induced membrane protrusions formation, which is analogously applied to the interorganelle communication in plant cells. Although ROS regulatory differences between plant and mammalian cells exist, the basis for ROS-triggered conduit formation underlies a unifying conservative theme in multicellular organisms. These mechanisms may represent the evolutionary advances that have enabled multicellularity to gain the ability to generate and utilize ROS to govern material exchanges between individual cells in oxygenated environment.
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Affiliation(s)
- Dacheng Liang
- Hubei Collaborative Innovation Center for Grain Industry, School of Agriculture, Yangtze University, Jingzhou, China.,Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, China
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18
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Sun Y, Zhang JR, Chen S. Suppression of Alzheimer's disease-related phenotypes by the heat shock protein 70 inducer, geranylgeranylacetone, in APP/PS1 transgenic mice via the ERK/p38 MAPK signaling pathway. Exp Ther Med 2017; 14:5267-5274. [PMID: 29285052 PMCID: PMC5740803 DOI: 10.3892/etm.2017.5253] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 01/06/2017] [Indexed: 11/16/2022] Open
Abstract
HSP70 overexpression has a remedying effect in neurodegenerative diseases. In Alzheimer's disease (AD), the suppressive effects of HSP70 overexpression on AD-related phenotypes and the underlying mechanisms are unknown. In the current study, the effect of geranylgeranylacetone (GGA), a non-toxic inducer of heat shock protein (HSP)-70 expression, on cognitive function and other pathological phenotypes were evaluated in APP/PS1 mice. It was observed that all doses of orally administered GGA (200, 400, and 800 mg/kg/day) improved cognitive deficit (P<0.05) and lowered the levels of amyloid-β (Aβ) peptide (P<0.05) in APP/PS1 mice. GGA treatment also increased the levels of low density lipoprotein receptor-related protein 1 (LRP-1) (P<0.05), while the levels of p-glycoprotein and receptor for advanced glycation end products were unaltered. Significant decreases in the levels of inflammatory cytokines, namely tumor necrosis factor-α, interleukin-1β and cyclooxygenase-2, were also observed in the GGA-treated mice (P<0.05). Subsequent treatment with the HSP70 inhibitor quercetin caused significant decreases in the levels of phosphorylated (p)-p38 mitogen-activated protein kinase (p38 MAPK) and p-extracellular signal-regulated protein kinases (ERK; P<0.05), indicating that ERK/p38 MAPK signaling in AD-related phenotypes may be suppressed by oral administration of GGA. Finally, in APP/PS1 mice treated with GGA+SB-203580 (p38 inhibitor) and GGA+PD98059 (ERK inhibitor), it was observed that orally administered GGA led to the activation of ERK/p38 MAPK signaling (P<0.05) and increased LRP-1 expression (P<0.05), which subsequently aided the clearance of Aβ40 and Aβ42 (P<0.05) and alleviated AD-related phenotypes. These results indicate that oral administration of GGA in APP/PS1 mice alleviates AD-related phenotypes by regulation of the ERK/p38 MAPK signaling pathway. Thus, GGA may be a potential therapeutic for the treatment of AD.
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Affiliation(s)
- Yuan Sun
- Department of Geratology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Jiang-Rong Zhang
- Department of Geratology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Shuyan Chen
- Department of Geratology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
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Yan F, Wang H, Gao Y, Xu J, Zheng W. Artemisinin Protects Retinal Neuronal Cells against Oxidative Stress and Restores Rat Retinal Physiological Function from Light Exposed Damage. ACS Chem Neurosci 2017; 8:1713-1723. [PMID: 28447781 DOI: 10.1021/acschemneuro.7b00021] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Oxidative stress plays a key role in the pathogenesis of age-related macular degeneration (AMD), a leading cause of severe visual loss and blindness in the aging population which lacks any effective treatments currently. In this study, artemisinin, a well-known antimalarial drug was found to suppress hydrogen peroxide (H2O2)-induced cell death in retinal neuronal RGC-5 cells. Artemisinin, in the therapeutically relevant dosage, concentration-dependently attenuated the accumulation of intracellular reactive oxygen species (ROS), increased mitochondrial membrane potential and decreased cell apoptosis in RGC-5 cells induced by H2O2. Western blot analysis showed that artemisinin upregulated the phosphorylation of p38 and extracellular signal-regulated kinases1/2 (ERK1/2) and reversed the inhibitory effect of H2O2 on the phosphorylation of these two kinases. Moreover, protective effect of artemisinin was blocked by the p38 kinase inhibitor PD169316 or ERK1/2 kinase pathway inhibitor PD98059, respectively. In contrast, c-Jun N-terminal kinase inhibitor and rapamycin had no effect in the protective effect of artemisinin. Taken together, these results demonstrated that artemisinin promoted the survival of RGC-5 cells from H2O2 toxicity via the activation of the p38 and ERK1/2 pathways. Interestingly, intravitreous injection of artimisinin, concentration-dependently reversed light exposed-damage (a dry AMD animal model) of rat retinal physiological function detected by flash electroretinogram. These results indicate that artemisinin can protect retinal neuronal functions from H2O2-induced damage in vitro and in vivo and suggest the potential application of artemisinin as a new drug in the treatment of retinal disorders like AMD.
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Affiliation(s)
- Fengxia Yan
- Faculty
of Health Sciences, University of Macau, Taipa, Macau 999078, China
- The
First Affiliated Hospital and Neuroparmacology, School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Haitao Wang
- Faculty
of Health Sciences, University of Macau, Taipa, Macau 999078, China
- School
of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yang Gao
- Zhongshan
Ophthalmic Center, Sun Yat-sen University, Guangzhou 510006, China
| | - Jiangping Xu
- School
of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Wenhua Zheng
- Faculty
of Health Sciences, University of Macau, Taipa, Macau 999078, China
- The
First Affiliated Hospital and Neuroparmacology, School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, China
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20
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Incorporation of dihydroartemisinin into memantine through a propriate spacer to make hybrid with enhanced effects to protect PC12 cells from corticosterone-caused impairments. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-6465-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Lin CY, Fu RH, Chou RH, Chen JH, Wu CR, Chang SW, Tsai CW. Inhibition of JNK by pi class of glutathione S -transferase through PKA/CREB pathway is associated with carnosic acid protection against 6-hydroxydopamine-induced apoptosis. Food Chem Toxicol 2017; 103:194-202. [DOI: 10.1016/j.fct.2017.03.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 03/05/2017] [Accepted: 03/07/2017] [Indexed: 11/16/2022]
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22
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Zeng Z, Xu J, Zheng W. Artemisinin protects PC12 cells against β-amyloid-induced apoptosis through activation of the ERK1/2 signaling pathway. Redox Biol 2017; 12:625-633. [PMID: 28391183 PMCID: PMC5385605 DOI: 10.1016/j.redox.2017.04.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/08/2017] [Accepted: 04/02/2017] [Indexed: 12/22/2022] Open
Abstract
Accumulating evidence displays that an abnormal deposition of amyloid beta-peptide (Aβ) is the primary cause of the pathogenesis of Alzheimer's disease (AD). And therefore the elimination of Aβ is regarded as an important strategy for AD treatment. The discovery of drug candidates using culture neuronal cells against Aβ peptide toxicity is believed to be an effective approach to develop drug for the treatment of AD patients. We have previously showed that artemisinin, a FDA-approved anti-malaria drug, has neuroprotective effects recently. In the present study, we aimed to investigate the effects and potential mechanism of artemisinin in protecting neuronal PC12 cells from toxicity of β amyloid peptide. Our studies revealed that artemisinin, in clinical relevant concentration, protected and rescued PC12 cells from Aβ25–35-induced cell death. Further study showed that artemisinin significantly ameliorated cell death due to Aβ25–35 insult by restoring abnormal changes in nuclear morphology, lactate dehydrogenase, intracellular ROS, mitochondrial membrane potential and activity of apoptotic caspase. Western blotting analysis demonstrated that artemisinin activated extracellular regulated kinase ERK1/2 but not Akt survival signaling. Consistent with the role of ERK1/2, preincubation of cells with ERK1/2 pathway inhibitor PD98059 blocked the effect of artemisinin while PI3K inhibitor LY294002 has no effect. Moreover, Aβ1-42 also caused cells death of PC12 cells while artemisinin suppressed Aβ1-42 cytotoxicity in PC12 cells. Taken together, these results, at the first time, suggest that artemisinin is a potential protectant against β amyloid insult through activation of the ERK1/2 pathway. Our finding provides a potential application of artemisinin in prevention and treatment of AD. β-amyloid induced apoptosis in PC12 cells. Artemisinin protected PC12 cells against β-amyloid-induced apoptosis. Artemisinin activated ERK1/2 signaling pathway in PC12 cells. Artemisinin protected PC12 cells against β-amyloid toxicity by ERK1/2 signaling pathway.
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Affiliation(s)
- Zhiwen Zeng
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Jinying Xu
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Wenhua Zheng
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China.
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23
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Wirth A, Holst K, Ponimaskin E. How serotonin receptors regulate morphogenic signalling in neurons. Prog Neurobiol 2017; 151:35-56. [DOI: 10.1016/j.pneurobio.2016.03.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 03/09/2016] [Accepted: 03/19/2016] [Indexed: 11/25/2022]
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24
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Law V, Dong S, Rosales JL, Jeong MY, Zochodne D, Lee KY. Enhancement of Peripheral Nerve Regrowth by the Purine Nucleoside Analog and Cell Cycle Inhibitor, Roscovitine. Front Cell Neurosci 2016; 10:238. [PMID: 27799897 PMCID: PMC5066473 DOI: 10.3389/fncel.2016.00238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 09/30/2016] [Indexed: 02/03/2023] Open
Abstract
Peripheral nerve regeneration is a slow process that can be associated with limited outcomes and thus a search for novel and effective therapy for peripheral nerve injury and disease is crucial. Here, we found that roscovitine, a synthetic purine nucleoside analog, enhances neurite outgrowth in neuronal-like PC12 cells. Furthermore, ex vivo analysis of pre-injured adult rat dorsal root ganglion (DRG) neurons showed that roscovitine enhances neurite regrowth in these cells. Likewise, in vivo transected sciatic nerves in rats locally perfused with roscovitine had augmented repopulation of new myelinated axons beyond the transection zone. By mass spectrometry, we found that roscovitine interacts with tubulin and actin. It interacts directly with tubulin and causes a dose-dependent induction of tubulin polymerization as well as enhances Guanosine-5′-triphosphate (GTP)-dependent tubulin polymerization. Conversely, roscovitine interacts indirectly with actin and counteracts the inhibitory effect of cyclin-dependent kinases 5 (Cdk5) on Actin-Related Proteins 2/3 (Arp2/3)-dependent actin polymerization, and thus, causes actin polymerization. Moreover, in the presence of neurotrophic factors such as nerve growth factor (NGF), roscovitine-enhanced neurite outgrowth is mediated by increased activation of the extracellular signal-regulated kinases 1/2 (ERK1/2) and p38 mitogen-activated protein kinase (MAPK) pathways. Since microtubule and F-actin dynamics are critical for axonal regrowth, the ability of roscovitine to activate the ERK1/2 and p38 MAPK pathways and support polymerization of tubulin and actin indicate a major role for this purine nucleoside analog in the promotion of axonal regeneration. Together, our findings demonstrate a therapeutic potential for the purine nucleoside analog, roscovitine, in peripheral nerve injury.
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Affiliation(s)
- Vincent Law
- Department of Cell Biology and Anatomy, Arnie Charbonneau Cancer Institute, Hotchkiss Brain Institute, University of Calgary Calgary, AB, Canada
| | - Sophie Dong
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, University of Calgary Calgary, AB, Canada
| | - Jesusa L Rosales
- Department of Biochemistry and Molecular Biology, Snyder Institute for Chronic Diseases, University of Calgary Calgary, AB, Canada
| | - Myung-Yung Jeong
- Department of Cogno-Mechatronics Engineering, Pusan National University Pusan, South Korea
| | - Douglas Zochodne
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, University of Calgary Calgary, AB, Canada
| | - Ki-Young Lee
- Department of Cell Biology and Anatomy, Arnie Charbonneau Cancer Institute, Hotchkiss Brain Institute, University of Calgary Calgary, AB, Canada
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25
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Chong CM, Zheng W. Artemisinin protects human retinal pigment epithelial cells from hydrogen peroxide-induced oxidative damage through activation of ERK/CREB signaling. Redox Biol 2016; 9:50-56. [PMID: 27372058 PMCID: PMC4939375 DOI: 10.1016/j.redox.2016.06.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/16/2016] [Accepted: 06/17/2016] [Indexed: 02/07/2023] Open
Abstract
The pathological increase in the levels of reactive oxygen species (ROS) in the retinal pigment epithelium (RPE), is implicated in the development of age-related macular degeneration (AMD). The discovery of drug candidates to effectively protect RPE cells from oxidative damage is required to resolve the pathological aspects and modify the process of AMD. In this study, a FDA-approved anti-malaria drug, Artemisinin was found to suppress hydrogen peroxide (H2O2)-induced cell death in human RPE cell-D407 cells. Further study showed that Artemisinin significantly suppressed H2O2- induced D407 cell death by restoring abnormal changes in nuclear morphology, intracellular ROS, mitochondrial membrane potential and apoptotic biomarkers. Western blotting analysis showed that Artemisinin was able to activate extracellular regulated ERK/CREB survival signaling. Furthermore, Artemisinin failed to suppress H2O2-induced cytotoxicity and the increase of caspase 3/7 activity in the presence of the ERK inhibitor PD98059. Taken together, these results suggest that Artemisinin is a potential protectant with the pro-survival effects against H2O2 insult through activation of the ERK/CREB pathway.
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Affiliation(s)
| | - Wenhua Zheng
- Faculty of Health Science, University of Macau, Macau, China.
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26
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Zheng W, Chong CM, Wang H, Zhou X, Zhang L, Wang R, Meng Q, Lazarovici P, Fang J. Artemisinin conferred ERK mediated neuroprotection to PC12 cells and cortical neurons exposed to sodium nitroprusside-induced oxidative insult. Free Radic Biol Med 2016; 97:158-167. [PMID: 27242266 DOI: 10.1016/j.freeradbiomed.2016.05.023] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 05/25/2016] [Accepted: 05/26/2016] [Indexed: 01/02/2023]
Abstract
The production of nitric oxide (NO) is one of the primary mediators of ischemic damage, glutamate neurotoxicity and neurodegeneration and therefore inhibition of NO-induced neurotoxicity may be considered a therapeutic target for reducing neuronal cell death (neuroprotection). In this study, artemisinin, a well-known anti-malaria drug was found to suppress sodium nitroprusside (SNP, a nitric oxide donor)-induced cell death in the PC12 cells and brain primary cortical neuronal cultures. Pretreatment of PC12 cells with artemisinin significantly suppressed SNP-induced cell death by decreasing the extent of oxidation, preventing the decline of mitochondrial membrane potential, restoring abnormal changes in nuclear morphology and reducing lactate dehydrogenase release and inhibiting caspase 3/7 activities. Western blotting analysis revealed that artemisinin was able to activate extracellular regulated protein kinases (ERK) pathway. Furthermore, the ERK inhibitor PD98059 blocked the neuroprotective effect of artemisinin whereas the PI3K inhibitor LY294002 had no effect. Cumulatively these findings support the notion that artemisinin confers neuroprotection from SNP-induce neuronal cell death insult, a phenomenon coincidentally related to activation of ERK phosphorylation. This SNP-induced oxidative insult in PC12 cell culture model may be useful to investigate molecular mechanisms of NO-induced neurotoxicity and drug-induced neuroprotection, and to generate novel therapeutic concepts for ischemic disease treatment.
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Affiliation(s)
- Wenhua Zheng
- Faculty of Health Sciences, University of Macau, Macau, China; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
| | | | - Haitao Wang
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Xuanhe Zhou
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Lang Zhang
- Faculty of Health Sciences, University of Macau, Macau, China; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Rikang Wang
- Faculty of Health Sciences, University of Macau, Macau, China; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Qian Meng
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Philip Lazarovici
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91102, Israel
| | - Jiankang Fang
- Faculty of Health Sciences, University of Macau, Macau, China
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Chen L, Feng P, Zhu X, He S, Duan J, Zhou D. Long non-coding RNA Malat1 promotes neurite outgrowth through activation of ERK/MAPK signalling pathway in N2a cells. J Cell Mol Med 2016; 20:2102-2110. [PMID: 27374227 PMCID: PMC5082393 DOI: 10.1111/jcmm.12904] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 05/09/2016] [Indexed: 02/05/2023] Open
Abstract
Accumulating evidence suggests that long non-coding RNAs (lncRNAs) are playing critical roles in neurogenesis, yet the underlying molecular mechanisms remain largely elusive. Neurite outgrowth is an early step in neuronal differentiation and regeneration. Using in vitro differentiation of neuroblastoma-derived Neuro-2a (N2a) cell as a model, we performed expression profiling to identify lncRNAs putatively relevant for neurite outgrowth. We identified that Metastasis-associated lung adenocarcinoma transcript 1 (Malat1) was one of the most significantly up-regulated lncRNAs during N2a cell differentiation. Malat1 knockdown resulted in defects in neurite outgrowth as well as enhanced cell death. To pinpoint signalling pathways perturbed by Malat1 depletion, we then performed a reporter-based screening to examine the activities of 50 signalling pathways in Malat1 knockdown cells. We found that Malat1 knockdown resulted in conspicuous inhibition of Mitogen-Activated Protein Kinase (MAPK) signaling pathway as well as abnormal activation of Peroxisome proliferator-activated receptor (PPAR) and P53 signalling pathway. Inhibition of ERK/MAPK pathway with PD98059 potently blocked N2a cell neurite outgrowth, whereas phorbol 12-myristate 13-acetate-induced ERK activation rescued defects in neurite outgrowth and cell death induced by Malat1 depletion. Together, our results established a critical role of Malat1 in the early step of neuronal differentiation through activating ERK/MAPK signalling pathway.
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Affiliation(s)
- Lei Chen
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China.
| | - Peimin Feng
- Department of Gastroenterology, Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xi Zhu
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
| | - Shixu He
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
| | - Jialan Duan
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
| | - Dong Zhou
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
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Dagda RK, Das Banerjee T. Role of protein kinase A in regulating mitochondrial function and neuronal development: implications to neurodegenerative diseases. Rev Neurosci 2015; 26:359-70. [PMID: 25741943 DOI: 10.1515/revneuro-2014-0085] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 01/08/2015] [Indexed: 11/15/2022]
Abstract
In neurons, enhanced protein kinase A (PKA) signaling elevates synaptic plasticity, promotes neuronal development, and increases dopamine synthesis. By contrast, a decline in PKA signaling contributes to the etiology of several brain degenerative diseases, including Alzheimer's disease and Parkinson's disease, suggesting that PKA predominantly plays a neuroprotective role. A-kinase anchoring proteins (AKAPs) are large multidomain scaffold proteins that target PKA and other signaling molecules to distinct subcellular sites to strategically localize PKA signaling at dendrites, dendritic spines, cytosol, and axons. PKA can be recruited to the outer mitochondrial membrane by associating with three different AKAPs to regulate mitochondrial dynamics, structure, mitochondrial respiration, trafficking, dendrite morphology, and neuronal survival. In this review, we survey the myriad of essential neuronal functions modulated by PKA but place a special emphasis on mitochondrially localized PKA. Finally, we offer an updated overview of how loss of PKA signaling contributes to the etiology of several brain degenerative diseases.
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Yamamoto K, Yamamoto T, Honjo K, Ichioka H, Oseko F, Kishida T, Mazda O, Kanamura N. Electrical stimulation with periodic alternating intervals stimulates neuronal cells to produce neurotrophins and cytokines through activation of mitogen-activated protein kinase pathways. Eur J Oral Sci 2015; 123:403-8. [DOI: 10.1111/eos.12224] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Kenta Yamamoto
- Department of Dental Medicine; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
- Department of Immunology; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
| | - Toshiro Yamamoto
- Department of Dental Medicine; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
| | - Kenichi Honjo
- Department of Dental Medicine; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
- Department of Immunology; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
| | - Hiroaki Ichioka
- Department of Dental Medicine; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
| | - Fumishige Oseko
- Department of Dental Medicine; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
| | - Tsunao Kishida
- Department of Immunology; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
| | - Osam Mazda
- Department of Immunology; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
| | - Narisato Kanamura
- Department of Dental Medicine; Kyoto Prefectural University of Medicine Graduate School of Medical Science; Kamigyo-ku Kyoto Japan
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LIU XIAOXING, WANG XIAOLIN, LU JUN. Tenuifoliside A promotes neurite outgrowth in PC12 cells via the PI3K/AKT and MEK/ERK/CREB signaling pathways. Mol Med Rep 2015; 12:7637-42. [DOI: 10.3892/mmr.2015.4397] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 08/05/2015] [Indexed: 11/06/2022] Open
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Liraglutide Promotes Cortical Neurite Outgrowth via the MEK–ERK Pathway. Cell Mol Neurobiol 2015; 35:987-93. [DOI: 10.1007/s10571-015-0193-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 04/06/2015] [Indexed: 12/18/2022]
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Kim KJ, Joe YA, Kim MK, Lee SJ, Ryu YH, Cho DW, Rhie JW. Silica nanoparticles increase human adipose tissue-derived stem cell proliferation through ERK1/2 activation. Int J Nanomedicine 2015; 10:2261-72. [PMID: 25848249 PMCID: PMC4378289 DOI: 10.2147/ijn.s71925] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background Silicon dioxide composites have been found to enhance the mechanical properties of scaffolds and to support growth of human adipose tissue-derived stem cells (hADSCs) both in vitro and in vivo. Silica (silicon dioxide alone) exists as differently sized particles when suspended in culture medium, but it is not clear whether particle size influences the beneficial effect of silicon dioxide on hADSCs. In this study, we examined the effect of different sized particles on growth and mitogen-activated protein kinase signaling in hADSCs. Methods Silica gel was prepared by a chemical reaction using hydrochloric acid and sodium silicate, washed, sterilized, and suspended in serum-free culture medium for 48 hours, and then sequentially filtered through a 0.22 μm filter (filtrate containing nanoparticles smaller than 220 nm; silica NPs). hADSCs were incubated with silica NPs or 3 μm silica microparticles (MPs), examined by transmission electron microscopy, and assayed for cell proliferation, apoptosis, and mitogen-activated protein kinase signaling. Results Eighty-nine percent of the silica NPs were around 50–120 nm in size. When hADSCs were treated with the study particles, silica NPs were observed in endocytosed vacuoles in the cytosol of hADSCs, but silica MPs showed no cell entry. Silica NPs increased the proliferation of hADSCs, but silica MPs had no significant effect in this regard. Instead, silica MPs induced slight apoptosis. Silica NPs increased phosphorylation of extracellular signal-related kinase (ERK)1/2, while silica MPs increased phosphorylation of p38. Silica NPs had no effect on phosphorylation of Janus kinase or p38. Pretreatment with PD98059, a MEK inhibitor, prevented the ERK1/2 phosphorylation and proliferation induced by silica NPs. Conclusion Scaffolds containing silicon dioxide for tissue engineering may enhance cell growth through ERK1/2 activation only when NPs around 50–120 nm in size are included, and single component silica-derived NPs could be useful for bioscaffolds in stem cell therapy.
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Affiliation(s)
- Ki Joo Kim
- Department of Plastic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea ; Department of Molecular Biomedicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Ae Joe
- Cancer Research Institute and Department of Medical Lifescience, The Catholic University of Korea, Seoul, Republic of Korea
| | - Min Kyoung Kim
- Department of Plastic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea ; Department of Molecular Biomedicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Su Jin Lee
- Department of Plastic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yeon Hee Ryu
- Department of Plastic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea ; Department of Molecular Biomedicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Dong-Woo Cho
- Department of Mechanical Engineering, Pohang University of Science and Technology, Gyeongbuk, Republic of Korea ; Department of Integrative Bioscience and Bioengineering, Pohang University of Science and Technology, Gyeongbuk, Republic of Korea
| | - Jong Won Rhie
- Department of Plastic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea ; Department of Molecular Biomedicine, The Catholic University of Korea, Seoul, Republic of Korea
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DONG FENGYUN, TIAN HU, YAN SUHUA, LI LIQUN, DONG XIAOFENG, WANG FUHAI, LI JIE, LI CHANGSHENG, CAO ZHIQUN, LIU XIAOCHUN, LIU JU. Dihydroartemisinin inhibits endothelial cell proliferation through the suppression of the ERK signaling pathway. Int J Mol Med 2015. [DOI: 10.3892/ijmm.2015] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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34
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Identification and characterization of neurotrophic factors in porcine small intestinal submucosa. Tissue Eng Regen Med 2014. [DOI: 10.1007/s13770-014-0043-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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35
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Zabłocka A, Urbaniak A, Kuropatwa M, Zyzak J, Rossowska J, Janusz M. Can proline-rich polypeptide complex mimic the effect of nerve growth factor? Biofactors 2014; 40:501-12. [PMID: 25042242 DOI: 10.1002/biof.1174] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 06/11/2014] [Accepted: 06/26/2014] [Indexed: 12/29/2022]
Abstract
Naturally occurring compounds that can act as prosurvival factors and neurite formation stimulants in the conditions of reduced neurotrophins production are important both in neuronal protection and therapy of neurodegenerative disorders. Therefore, the role of proline-rich polypeptide complex (PRP) and its nonapeptide fragment (NP) in the promotion of pheochromocytoma cell line (PC12) survival and neurite outgrowth pathway is presented. It was shown that PRP/NP did not affect the neuronal nitric oxide synthase (nNOS) at the transcriptional and protein level. However, the activity of nNOS and intracellular nitric oxide (NO) concentration was markedly increased after treatment of PC12 cells with peptides. This reaction was inhibited by L-NAME-nNOS inhibitor. It was shown that PRP and NP induce the soluble guanylyl cyclase to release higher amount of cyclic GMP (cGMP), and subsequently, the increased phosphorylation of extracellular signal-regulated kinases 1 and 2 (ERK1/2) is observed. This effect was abolished by both U0126 (inhibitor of ERK1/2) and also by L-NAME. Reduction of ERK1/2 activity observed in the presence of nNOS inhibitor suggests that its activation is NO-dependent. The presented results shed some light on the mechanism of action of PRP complex. PRP and NP can activate NO/cGMP/ERK1/2 signaling pathway, similarly to nerve growth factor (NGF). The prosurvival action and short fibers formation suggest the role of PRP and NP in neuroprotection and the initiation of neuritogenesis. They can also participate in the amplification of signals controlling the survival and differentiation of neurons effect when the deficit of NGF takes place.
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Affiliation(s)
- Agnieszka Zabłocka
- Department of Immunochemistry, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
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36
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Liu R, Cheng Z, Jiang X. Comparative studies on the interactions of dihydroartemisinin and artemisinin with bovine serum albumin using spectroscopic methods. LUMINESCENCE 2014; 29:1033-46. [PMID: 24804646 DOI: 10.1002/bio.2655] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 12/11/2013] [Accepted: 01/24/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Rong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; China West Normal University; Nanchong 637002 China
| | - Zhengjun Cheng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; China West Normal University; Nanchong 637002 China
| | - Xiaohui Jiang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; China West Normal University; Nanchong 637002 China
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37
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Marballi KK, McCullumsmith RE, Yates S, Escamilla MA, Leach RJ, Raventos H, Walss-Bass C. Global signaling effects of a schizophrenia-associated missense mutation in neuregulin 1: an exploratory study using whole genome and novel kinome approaches. J Neural Transm (Vienna) 2014; 121:479-90. [PMID: 24380930 PMCID: PMC3999257 DOI: 10.1007/s00702-013-1142-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 12/12/2013] [Indexed: 10/25/2022]
Abstract
Aberrant neuregulin 1-ErbB4 signaling has been implicated in schizophrenia. We previously identified a novel schizophrenia-associated missense mutation (valine to leucine) in the NRG1 transmembrane domain. This variant inhibits formation of the NRG1 intracellular domain (ICD) and causes decreases in dendrite formation. To assess the global effects of this mutation, we used lymphoblastoid cell lines from unaffected heterozygous carriers (Val/Leu) and non-carriers (Val/Val). Transcriptome data showed 367 genes differentially expressed between the two groups (Val/Val N = 6, Val/Leu N = 5, T test, FDR (1 %), α = 0.05, -log10 p value >1.5). Ingenuity pathway (IPA) analyses showed inflammation and NRG1 signaling as the top pathways altered. Within NRG1 signaling, protein kinase C (PKC)-eta (PRKCH) and non-receptor tyrosine kinase (SRC) were down-regulated in heterozygous carriers. Novel kinome profiling (serine/threonine) was performed after stimulating cells (V/V N = 6, V/L N = 6) with ErbB4, to induce release of the NRG1 ICD, and revealed significant effects of treatment on the phosphorylation of 35 peptides. IPA showed neurite outgrowth (six peptides) as the top annotated function. Phosphorylation of these peptides was significantly decreased in ErbB4-treated Val/Val but not in Val/Leu cells. These results show that perturbing NRG1 ICD formation has major effects on cell signaling, including inflammatory and neurite formation pathways, and may contribute significantly to schizophrenia pathophysiology.
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Affiliation(s)
- Ketan K Marballi
- Department of Cellular and Structural Biology, 7703 Floyd Curl Dr., University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
- Department of Psychiatry, Neuroscience Program, South Texas Research Facility, 8403 Floyd Curl Dr., San Antonio, TX, 78229, USA
| | - Robert E McCullumsmith
- Department of Psychiatry, School of Medicine, University of Alabama at Birmingham, 1719 6th Avenue South, CIRC 576A Birmingham, AL 35294, USA
| | - Stefani Yates
- Department of Psychiatry, School of Medicine, University of Alabama at Birmingham, 1719 6th Avenue South, CIRC 576A Birmingham, AL 35294, USA
| | - Michael A Escamilla
- Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, 4800 Alberta Ave, El Paso, TX 79905
| | - Robin J Leach
- Department of Cellular and Structural Biology, 7703 Floyd Curl Dr., University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | | | - Consuelo Walss-Bass
- Department of Psychiatry, Neuroscience Program, South Texas Research Facility, 8403 Floyd Curl Dr., San Antonio, TX, 78229, USA
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Zhang HT, Wang YL, Zhang J, Zhang QX. Artemisinin inhibits gastric cancer cell proliferation through upregulation of p53. Tumour Biol 2014; 35:1403-9. [PMID: 24078446 DOI: 10.1007/s13277-013-1193-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 09/09/2013] [Indexed: 01/07/2023] Open
Abstract
Recent population studies suggest that the use of artemisinin is associated with reduced incidence and improved prognosis of certain cancers. In the current study, we assessed the effect of artemisinin on gastric cancer cells (AGS and MKN74 cells). We found that artemisinin inhibited growth and modulated expression of cell-cycle regulators in these cells. Treatment with artemisinin was also associated with induction of p27 kip1 and p21 kip1, two negative cell-cycle regulators. Furthermore, we revealed that artemisinin treatment led to an increased expression of p53. Taken together, these results provide evidence for a mechanism that may contribute to the antineoplastic effects of artemisinin suggested by recent population studies and justify further work to explore potential roles for it in gastric cancer prevention and treatment.
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BIG1, a brefeldin A-inhibited guanine nucleotide-exchange protein regulates neurite development via PI3K–AKT and ERK signaling pathways. Neuroscience 2013; 254:361-8. [DOI: 10.1016/j.neuroscience.2013.09.045] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 09/23/2013] [Accepted: 09/24/2013] [Indexed: 11/20/2022]
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Talman V, Amadio M, Osera C, Sorvari S, Boije Af Gennäs G, Yli-Kauhaluoma J, Rossi D, Govoni S, Collina S, Ekokoski E, Tuominen RK, Pascale A. The C1 domain-targeted isophthalate derivative HMI-1b11 promotes neurite outgrowth and GAP-43 expression through PKCα activation in SH-SY5Y cells. Pharmacol Res 2013; 73:44-54. [PMID: 23643828 DOI: 10.1016/j.phrs.2013.04.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 04/22/2013] [Accepted: 04/23/2013] [Indexed: 11/28/2022]
Abstract
Protein kinase C (PKC) is a family of serine/threonine phosphotransferases ubiquitously expressed and involved in multiple cellular functions, such as proliferation, apoptosis and differentiation. The C1 domain of PKC represents an attractive drug target, especially for developing PKC activators. Dialkyl 5-(hydroxymethyl)isophthalates are a novel group of synthetic C1 domain ligands that exhibit antiproliferative effect in HeLa cervical carcinoma cells. Here we selected two isophthalates, HMI-1a3 and HMI-1b11, and characterized their effects in the human neuroblastoma cell line SH-SY5Y. Both of the active isophthalates exhibited significant antiproliferative and differentiation-inducing effects. Since HMI-1b11 did not impair cell survival even at the highest concentration tested (20μM), and supported neurite growth and differentiation of SH-SY5Y cells, we focused on studying its downstream signaling cascades and effects on gene expression. Consistently, genome-wide gene expression microarray and gene set enrichment analysis indicated that HMI-1b11 (10μM) induced changes in genes mainly related to cell differentiation. In particular, further studies revealed that HMI-1b11 exposure induced up-regulation of GAP-43, a marker for neurite sprouting and neuronal differentiation. These effects were induced by a 7-min HMI-1b11 treatment and specifically depended on PKCα activation, since pretreatment with the selective inhibitor Gö6976 abolished the up-regulation of GAP-43 protein observed at 12h. In parallel, we found that a 7-min exposure to HMI-1b11 induced PKCα accumulation to the cytoskeleton, an effect that was again prevented by pretreatment with Gö6976. Despite similar binding affinities to PKC, the isophthalates had different effects on PKC-dependent ERK1/2 signaling: HMI-1a3-induced ERK1/2 phosphorylation was transient, while HMI-1b11 induced a rapid but prolonged ERK1/2 phosphorylation. Overall our data are in accordance with previous studies showing that activation of the PKCα and ERK1/2 pathways participate in regulating neuronal differentiation. Furthermore, since PKC has been classified as one of the cognitive kinases, and activation of PKC is considered a potential therapeutic strategy for the treatment of cognitive disorders, our findings suggest that HMI-1b11 represents a promising lead compound in research aimed to prevent or counteract memory impairment.
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Affiliation(s)
- Virpi Talman
- Division of Pharmacology and Toxicology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland.
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