1
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Chen H, Zhang CJ, Zhao ZY, Gao YY, Zhao JT, Li XX, Zhang M, Wang H. Mechanisms underlying LncRNA SNHG1 regulation of Alzheimer's disease involve DNA methylation. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:428-435. [PMID: 38551404 DOI: 10.1080/15287394.2024.2334248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease associated with long non-coding RNAs and DNA methylation; however, the mechanisms underlying the role of lncRNA small nucleolar RNA host gene 1 (lncRNA SNHG1) and subsequent involvement of DNA methylation in AD development are not known. The aim of this study was to examine the regulatory mechanisms attributed to lncRNA SNHG1 gene utilizing 2 strains of senescence-accelerated mouse prone 8 (SAMP8) model of AD and compared to senescence-accelerated mouse resistant (SAMR) considered a control. Both strains of the mouse were transfected with either blank virus, psLenti-U6-SNHG1(low gene expression) virus, and psLenti-pA-SNHG1(gene overexpression) virus via a single injection into the brains for 2 weeks. At 2 weeks mice were subjected to a Morris water maze to determine any behavioral effects followed by sacrifice to extract hippocampal tissue for Western blotting to measure protein expression of p-tau, DNMT1, DNMT3A, DNMT3B, TET1, and p-Akt. No marked alterations were noted in any parameters following blank virus transfection. In SAMP8 mice, a significant decrease was noted in protein expression of DNMT1, DNMT3A, DNMT3B, and p-Akt associated with rise in p-tau and TET1. Transfection with ps-Lenti-U6-SNHG1 alone in SAMR1 mice resulted in a significant rise in DNMTs and p-Akt and a fall in p-tau and TET1. Transfection of SAMP8 with ps-Lenti-U6-SNHG1 blocked effects on overexpression noted in this mouse strain. However, knockdown of lncRNA SNHG1 yielded the opposite results as found in SAMR1 mice. In conclusion, the knockdown of lncRNA SNHG1 enhanced DNA methylation through the PI3K/Akt signaling pathway, thereby reducing the phosphorylation levels of tau in SAMP8 AD model mice with ameliorating brain damage attributed to p-tau accumulation with consequent neuroprotection.
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Affiliation(s)
- Hong Chen
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Chun-Jie Zhang
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
- Center of Collaborative Innovation in Translational Medicine, Baotou Medical College, Inner Mongolia, China
| | - Zhi-Ying Zhao
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Yang-Yang Gao
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Jian-Tian Zhao
- Institute of Public Health, Baotou Medical College, Inner Mongolia, China
| | - Xiao-Xu Li
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Ming Zhang
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - He Wang
- School of Health Sciences, University of Newcastle, Newcastle, Australia
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2
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He JB, Zhang H, Zheng HX, Jia JX, Zhang YC, Yan XS, Li XX, Wei KW, Mao J, Chen H, Li J, Wang H, Zhang M, Zhao ZY. Effects of schisandrin B on hypoxia-related cognitive function and protein expression in vascular dementia rats. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:421-427. [PMID: 38551405 DOI: 10.1080/15287394.2024.2334247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Vascular dementia (VD) a heterogenous group of brain disorders in which cognitive impairment is attributable to vascular risk factors and cerebrovascular disease. A common phenomenon in VD is a dysfunctional cerebral regulatory mechanism associated with insufficient cerebral blood flow, ischemia and hypoxia. Under hypoxic conditions oxygen supply to the brain results in neuronal death leading to neurodegenerative diseases including Alzheimer's (AD) and VD. In conditions of hypoxia and low oxygen perfusion, expression of hypoxia-inducible factor 1 alpha (HIF-1α) increases under conditions of low oxygen and low perfusion associated with upregulation of expression of hypoxia-upregulated mitochondrial movement regulator (HUMMR), which promotes anterograde mitochondrial transport by binding with trafficking protein kinesin 2 (TRAK2). Schisandrin B (Sch B) an active component derived from Chinese herb Wuweizi prevented β-amyloid protein induced morphological alterations and cell death using a SH-SY5Y neuronal cells considered an AD model. It was thus of interest to determine whether Sch B might also alleviate VD using a rat bilateral common carotid artery occlusion (BCAO) dementia model. The aim of this study was to examine the effects of Sch B in BCAO on cognitive functions such as Morris water maze test and underlying mechanisms involving expression of HIF-1α, TRAK2, and HUMMR levels. The results showed that Sch B improved learning and memory function of rats with VD and exerted a protective effect on the hippocampus by inhibition of protein expression of HIF-1α, TRAK2, and HUMMR factors. Evidence indicates that Sch B may be considered as an alternative in VD treatment.
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Affiliation(s)
- Jing-Bo He
- Department of Pharmacy, Baotou Medical College, Inner Mongolia, China
| | - He Zhang
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Hong-Xia Zheng
- Faculty of Foreign Languages, Baotou Teachers' College, Inner Mongolia, China
| | - Jian-Xin Jia
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Yi-Chi Zhang
- Class15, Senior two, Baotou No.9 High School, Inner Mongolia, China
| | - Xu-Sheng Yan
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Xiao-Xu Li
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Kai-Wen Wei
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Jun Mao
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Hong Chen
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Jing Li
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
- Department of Anesthesia, The Fourth Hospital of Inner Mongolia Autonomous Region, Inner Mongolia, China
| | - He Wang
- School of Health Sciences, University of Newcastle, Newcastle, Australia
| | - Ming Zhang
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Zhi-Ying Zhao
- Institute of Neuroscience, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
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3
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Guan Y, Tang G, Li L, Shu J, Zhao Y, Huang L, Tang J. Herbal medicine and gut microbiota: exploring untapped therapeutic potential in neurodegenerative disease management. Arch Pharm Res 2024; 47:146-164. [PMID: 38225532 PMCID: PMC10830735 DOI: 10.1007/s12272-023-01484-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 12/29/2023] [Indexed: 01/17/2024]
Abstract
The gut microbiota that exists in the human gastrointestinal tract is incredibly important for the maintenance of general health as it contributes to multiple aspects of host physiology. Recent research has revealed a dynamic connection between the gut microbiota and the central nervous system, that can influence neurodegenerative diseases (NDs). Indeed, imbalances in the gut microbiota, or dysbiosis, play a vital role in the pathogenesis and progression of human diseases, particularly NDs. Herbal medicine has been used for centuries to treat human diseases, including NDs. These compounds help to relieve symptoms and delay the progression of NDs by improving intestinal barrier function, reducing neuroinflammation, and modulating neurotransmitter production. Notably, herbal medicine can mitigate the progression of NDs by regulating the gut microbiota. Therefore, an in-depth understanding of the potential mechanisms by which herbal medicine regulates the gut microbiota in the treatment of NDs can help explain the pathogenesis of NDs from a novel perspective and propose novel therapeutic strategies for NDs. In this review, we investigate the potential neuroprotective effects of herbal medicine, focusing on its ability to regulate the gut microbiota and restore homeostasis. We also highlight the challenges and future research priorities of the integration of herbal medicine and modern medicine. As the global population ages, access to this information is becoming increasingly important for developing effective treatments for these diseases.
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Affiliation(s)
- Yueyue Guan
- Department of Brain Disease, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China
| | - Guohua Tang
- Department of Brain Disease, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China
| | - Lei Li
- Department of Anorectal Surgery, Hospital of Chengdu University of Traditional Chinese Medicine and Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Jianzhong Shu
- Department of Brain Disease, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China
| | - Yuhua Zhao
- Department of Brain Disease, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China
| | - Li Huang
- Department of Brain Disease, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China.
| | - Jun Tang
- Department of Brain Disease, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China.
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4
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Bazi Bushen mitigates epigenetic aging and extends healthspan in naturally aging mice. Biomed Pharmacother 2023; 160:114384. [PMID: 36764132 DOI: 10.1016/j.biopha.2023.114384] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/18/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
Bazi Bushen (BZBS), a traditional Chinese medicine, has been proven effective in the treatment of age-related disease in mouse models. However, whether its therapeutic effects are due to antiaging mechanism has not yet been explored. In the present study, we investigated the antiaging effects of BZBS in naturally aging mice by using behavioral tests, liver DNA methylome sequencing, methylation age estimation, and frailty index assessment. The methylome analysis revealed a decrease of mCpG levels in the aged mouse liver. BZBS treatment tended to restore age-associated methylation decline and prune the methylation pattern toward that of young mice. More importantly, BZBS significantly rejuvenated methylation age of the aged mice, which was computed by an upgraded DNA methylation clock. These results were consistent with enhanced memory and muscular endurance, as well as decreased frailty score and liver pathological changes. KEGG analysis together with aging-related database screening identified methylation-targeted pathways upon BZBS treatment, including oxidative stress, DNA repair, MAPK signaling, and inflammation. Upregulation of key effectors and their downstream effects on elevating Sod2 expression and diminishing DNA damage were further investigated. Finally, in vitro experiments with senescent HUVECs proved a direct effect of BZBS extracts on the regulation of methylation enzymes during cellular aging. In summary, our work has revealed for the first time the antiaging effects of BZBS by slowing the methylation aging. These results suggest that BZBS might have great potential to extend healthspan and also explored the mechanism of BZBS action in the treatment of age-related diseases.
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Yan L, Guo MS, Zhang Y, Yu L, Wu JM, Tang Y, Ai W, Zhu FD, Law BYK, Chen Q, Yu CL, Wong VKW, Li H, Li M, Zhou XG, Qin DL, Wu AG. Dietary Plant Polyphenols as the Potential Drugs in Neurodegenerative Diseases: Current Evidence, Advances, and Opportunities. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5288698. [PMID: 35237381 PMCID: PMC8885204 DOI: 10.1155/2022/5288698] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/10/2022] [Accepted: 01/28/2022] [Indexed: 02/07/2023]
Abstract
Neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease (HD), are characterized by the progressive degeneration of neurons. Although the etiology and pathogenesis of neurodegenerative diseases have been studied intensively, the mechanism is still in its infancy. In general, most neurodegenerative diseases share common molecular mechanisms, and multiple risks interact and promote the pathologic process of neurogenerative diseases. At present, most of the approved drugs only alleviate the clinical symptoms but fail to cure neurodegenerative diseases. Numerous studies indicate that dietary plant polyphenols are safe and exhibit potent neuroprotective effects in various neurodegenerative diseases. However, low bioavailability is the biggest obstacle for polyphenol that largely limits its adoption from evidence into clinical practice. In this review, we summarized the widely recognized mechanisms associated with neurodegenerative diseases, such as misfolded proteins, mitochondrial dysfunction, oxidative damage, and neuroinflammatory responses. In addition, we summarized the research advances about the neuroprotective effect of the most widely reported dietary plant polyphenols. Moreover, we discussed the current clinical study and application of polyphenols and the factors that result in low bioavailability, such as poor stability and low permeability across the blood-brain barrier (BBB). In the future, the improvement of absorption and stability, modification of structure and formulation, and the combination therapy will provide more opportunities from the laboratory into the clinic for polyphenols. Lastly, we hope that the present review will encourage further researches on natural dietary polyphenols in the treatment of neurodegenerative diseases.
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Affiliation(s)
- Lu Yan
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Min-Song Guo
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Yue Zhang
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Lu Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Jian-Ming Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Yong Tang
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau SAR, China
| | - Wei Ai
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Feng-Dan Zhu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Betty Yuen-Kwan Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau SAR, China
| | - Qi Chen
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
- Department of Nursing, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Chong-Lin Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Vincent Kam-Wai Wong
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau SAR, China
| | - Hua Li
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Mao Li
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Xiao-Gang Zhou
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Da-Lian Qin
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau SAR, China
| | - An-Guo Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy; Education Ministry Key Laboratory of Medical Electrophysiology, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
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6
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Guo W, Ma H, Wang CZ, Wan JY, Yao H, Yuan CS. Epigenetic Studies of Chinese Herbal Medicine: Pleiotropic Role of DNA Methylation. Front Pharmacol 2021; 12:790321. [PMID: 34950039 PMCID: PMC8688941 DOI: 10.3389/fphar.2021.790321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/22/2021] [Indexed: 12/03/2022] Open
Abstract
Accumulating knowledge has been achieved on DNA methylation participating in numerous cellular processes and multiple human diseases; however, few studies have addressed the pleiotropic role of DNA methylation in Chinese herbal medicine (CHM). CHM has been used worldwide for the prevention and treatment of multiple diseases. Newly developed epigenetic techniques have brought great opportunities for the development of CHM. In this review, we summarize the DNA methylation studies and portray the pleiotropic role of DNA methylation in CHM. DNA methylation serves as a mediator participating in plant responses to environmental factors, and thus affecting CHM medicinal plants growth and bioactive compound biosynthesis which are vital for therapeutic effects. Furthermore, DNA methylation helps to uncover the pharmaceutical mechanisms of CHM formulae, herbs, and herbal-derived compounds. It also provides scientific validation for constitution theory and other essential issues of CHM. This newly developed field of DNA methylation is up-and-coming to address many complicated scientific questions of CHM; it thus not only promotes disease treatment but also facilitates health maintenance.
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Affiliation(s)
- Wenqian Guo
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.,National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Han Ma
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.,National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Chong-Zhi Wang
- Tang Center for Herbal Medicine Research, The University of Chicago, Chicago, IL, United States.,Department of Anesthesia and Critical Care, The University of Chicago, Chicago, IL, United States
| | - Jin-Yi Wan
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.,National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Haiqiang Yao
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.,National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Chun-Su Yuan
- Tang Center for Herbal Medicine Research, The University of Chicago, Chicago, IL, United States.,Department of Anesthesia and Critical Care, The University of Chicago, Chicago, IL, United States
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7
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Yang Z, Zhou DD, Huang SY, Fang AP, Li HB, Zhu HL. Effects and mechanisms of natural products on Alzheimer's disease. Crit Rev Food Sci Nutr 2021:1-21. [PMID: 34613845 DOI: 10.1080/10408398.2021.1985428] [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: 12/28/2022]
Abstract
Alzheimer's disease (AD) is the most common form of dementia in elderly people with a high incidence rate and complicated pathogenesis, and causes progressive cognitive deficit and memory impairment. Some natural products and bioactive compounds from natural sources show great potential in the prevention and treatment of AD, such as apple, blueberries, grapes, chili pepper, Monsonia angustifolia, cruciferous vegetables, Herba epimedii, Angelica tenuissima, Embelia ribes, sea cucumber, Cucumaria frondosa, green tea, Puer tea, Amanita caesarea and Inonotus obliquus, via reducing amyloid beta (Aβ) deposition, decreasing Tau hyperphosphorylation, regulating cholinergic system, reducing oxidative stress, inhibiting apoptosis and ameliorating inflammation. This review mainly summarizes the effects of some natural products and their bioactive compounds on AD with the potential molecular mechanisms.
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Affiliation(s)
- Zhijun Yang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Dan-Dan Zhou
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Si-Yu Huang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Ai-Ping Fang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Hui-Lian Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
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8
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Schisandrin A and B enhance the dentate gyrus neurogenesis in mouse hippocampus. J Chem Neuroanat 2020; 105:101751. [PMID: 32027950 DOI: 10.1016/j.jchemneu.2020.101751] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 01/18/2020] [Accepted: 01/18/2020] [Indexed: 12/14/2022]
Abstract
Schisandrin A and B (Sch A and B) are the main effective components of Schisandra chinensis (S. chinensis), which is traditionally used to enhance mental and intellectual functions in eastern Asia. Previously, we reported Sch A and B remarkably affect adult neurogenesis in the subventricular zone of mouse lateral ventricle. Since the neurogenesis in the hippocampal dentate gyrus (DG) is more important to learning, memory and cognition, here we further examined their effects on the adult DG neurogenesis. Phosphohistone H3 (PHH3) immunostaining showed that Sch B significantly enhanced the cell proliferation in the DG. Glial fibrillary acidic protein (GFAP, mostly labels astrocytes and some stem cells) staining was used to further identify the proliferating cell type. Dramatically, increases of GFAP+ cells in both Sch A and B treated groups were observed. What's more, the total numbers of the mature neurons labeled by neuron-specific nuclear protein (NeuN) were also increased in both Sch A and B treated groups compared with the controls. Together, Sch A and B enhance the adult DG neurogenesis by increasing astrocytes/stem cells and improving the survival and maturation of DG neurons. Our study shed a new light on the neuropharmacological functions of the herbal medicine S. chinensis.
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9
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Zhang M, Zhang YQ, Wei XZ, Lee C, Huo DS, Wang H, Zhao ZY. Differentially expressed long-chain noncoding RNAs in human neuroblastoma cell line (SH-SY5Y): Alzheimer's disease cell model. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:1052-1060. [PMID: 31722651 DOI: 10.1080/15287394.2019.1687183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A number of complex human diseases including neurological diseases is characterized by dysregulation of long-chain noncoding RNA (lncRNA). The pathogenesis of Alzheimer's disease (AD), a neurodegenerative disorder is believed to involve alterations in lncRNAs. However, the specific lncRNAs modified in AD remain to be determined. The aim of this study was to identify lncRNAs associated with AD using human neuroblastoma cell line (SH-SY5Y) treated with beta-amyloid (Aβ) as a model of this disease. The differential expressions of lncRNA were compared between beta-amyloid (Aβ) SH-SY5Y cells and normal SH-SY5Y cells utilizing Illumina X10 gene sequencing. The differential expression profiles of amyloid (Aβ)-treated SH-SY5Y cells were determined and verified by qRT-PCR method. The expression levels of lncRNA were expressed by calculating the abundance of FPKM (measure gene expression). The differential expression of log2 (multiple change) >1 or log2 (multiple change) < -1 had statistical significance (P< .05). The differential expression profiles of amyloid (Aβ)-treated SH-SY5Y cells showed 40 lncRNA were up-regulated, while 60 lncRNA were down-regulated. GO and KEGG analysis demonstrated that differentially expressed genes were predominantly involved in the mitogen-activated protein kinase (MAPK) signaling pathway, p53 signaling pathway, hepatitis B, cell cycle, post-translational protein modification, and regulation. In conclusion, approximately 100 dysregulated lncRNA transcripts were found in amyloid (Aβ)-treated SH-SY5Y cells and these lncRNAs may play an important role in the occurrence and development of AD through altered signal pathways.
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Affiliation(s)
- Ming Zhang
- Institute of Anesthesia, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Yuan-Qing Zhang
- Institute of Anesthesia, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Xie-Ze Wei
- Institute of Anesthesia, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Charles Lee
- School of Health Sciences, University of Newcastle, Newcastle, Australia
| | - Dong-Sheng Huo
- Institute of Anesthesia, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - He Wang
- School of Health Sciences, University of Newcastle, Newcastle, Australia
| | - Zhi-Ying Zhao
- Institute of Anesthesia, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
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10
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Nan K, Han Y, Fang Q, Huang C, Yu L, Ge W, Xiang F, Tao YX, Cao H, Li J. HMGB1 gene silencing inhibits neuroinflammation via down-regulation of NF-κB signaling in primary hippocampal neurons induced by Aβ25–35. Int Immunopharmacol 2019; 67:294-301. [DOI: 10.1016/j.intimp.2018.12.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 12/04/2018] [Accepted: 12/11/2018] [Indexed: 12/15/2022]
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11
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Sensitive neurotoxicity assessment of bisphenol A using double immunocytochemistry of DCX and MAP2. Arch Pharm Res 2018; 41:1098-1107. [DOI: 10.1007/s12272-018-1077-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/11/2018] [Indexed: 02/01/2023]
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12
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Lee S, Park HR, Lee JY, Cho JH, Song HM, Kim AH, Lee W, Lee Y, Chang SC, Kim HS, Lee J. Learning, memory deficits, and impaired neuronal maturation attributed to acrylamide. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:254-265. [PMID: 29473799 DOI: 10.1080/15287394.2018.1440184] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Acrylamide (ACR) is a neurotoxin known to produce neurotoxicity characterized by ataxia, skeletal muscle weakness, cognitive impairment, and numbness of the extremities. Previously, investigators reported that high-dose (50 mg/kg) ACR impaired hippocampal neurogenesis and increased neural progenitor cell death; however, the influence of subchronic environmentally relevant low dose-(2, 20, or 200 μg/kg) ACRs have not been examined in adult neurogenesis or cognitive function in mice. Accordingly, the aim of the present study was to investigate whether low-dose ACR adversely affected mouse hippocampal neurogenesis and neurocognitive functions. Male C57BL/6 mice were orally administered vehicle or ACR at 2, 20, or 200 μg/kg/day for 4 weeks. ACR did not significantly alter the number of newly generated cells or produce neuroinflammation or neuronal loss in hippocampi. However, behavioral studies revealed that 200 μg/kg ACR produced learning and memory impairment. Furthermore, incubation of ACR with primary cultured neurons during the developmental stage was found to delay neuronal maturation without affecting cell viability indicating the presence of developmental neurotoxicity. These findings indicate that although exposure to in vivo low-dose ACR daily for 4 weeks exerted no apparent marked effect on hippocampal neurogenesis, in vitro observations in primary cultured neurons noted adverse effects on learning and memory impairment suggestive of neurotoxic actions.
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Affiliation(s)
- Seulah Lee
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
| | - Hee Ra Park
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
| | - Joo Yeon Lee
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
| | - Jung-Hyun Cho
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
| | - Hye Min Song
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
| | - Ah Hyun Kim
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
| | - Wonjong Lee
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
| | - Yujeong Lee
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
| | - Seung-Cheol Chang
- b Institute of BioPhysio Sensor Technology , Pusan National University , Busan , Republic of Korea
| | - Hyung Sik Kim
- c School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
| | - Jaewon Lee
- a Department of Pharmacy, College of Pharmacy, Molecular Inflammation Research Center for Aging Intervention , Pusan National University , Busan , Republic of Korea
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Kwon YJ, Cho NH, Ye DJ, Baek HS, Ryu YS, Chun YJ. Cytochrome P450 1B1 promotes cancer cell survival via specificity protein 1 (Sp1)-mediated suppression of death receptor 4. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:278-287. [PMID: 29473798 DOI: 10.1080/15287394.2018.1440186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cytochrome P450 1B1 (CYP1B1), a well-known oncogene, has garnered wide attention because of its tumor-specific expression pattern and actions as a carcinogenic factor. Although CYP1B1 might play a crucial role in carcinogenesis, the detailed molecular mechanisms underlying oncogenic involvement in cancer development remain unclear. The present study investigated the manner in which CYP1B1 promotes survival of various cancer cells. Treatment with 2,2',4,6'-tetramethoxystilbene (TMS), a specific CYP1B1 inhibitor, significantly inhibited cell viability in human breast cancer and leukemia cell lines, including MCF-7, MDA-MB-231, HL-60, and U937 cells. In order to characterize the cellular functions of CYP1B1 associated with cancer cell survival, the relationship between this oncogene and death receptor 4 (DR4) was determined. Following induction or inhibition of CYP1B1, mRNA and protein expression levels of DR4 were measured, and this oncogene was found to significantly repress DR4 mRNA and protein expression. Further, the suppression of DR4 by CYP1B1 was restored with 5-aza-2'-deoxycytidine (5-aza-dC), a DNA methyltransferase inhibitor, indicating that DNA methylation may be involved in CYP1B1-mediated DR4 inhibition. Methylation-specific polymerase chain reaction (PCR) in CYP1B1-overexpressed HL-60 cells revealed that this oncogene induced hypermethylation on DR4 promoter. Interestingly, data showed that DR4 suppression of CYP1B1 is mediated by the DNA-binding ability of specificity protein 1 (Sp1). These findings suggest that CYP1B1 promotes cancer cell survival through involvement of DNA methylation-mediated DR4 inhibition and that Sp1 may act as key mediator required for oncogenic action.
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Affiliation(s)
- Yeo-Jung Kwon
- a College of Pharmacy , Chung-Ang University , Seoul , Korea
| | - Nam-Hyeon Cho
- a College of Pharmacy , Chung-Ang University , Seoul , Korea
| | - Dong-Jin Ye
- a College of Pharmacy , Chung-Ang University , Seoul , Korea
| | | | - Yeon-Sang Ryu
- a College of Pharmacy , Chung-Ang University , Seoul , Korea
| | - Young-Jin Chun
- a College of Pharmacy , Chung-Ang University , Seoul , Korea
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