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Liu Q, Li J, Gu M, Kong W, Lin Z, Mao J, Zhang M, Jiang L, Liu C, Wang Y, Liu J. High-Throughput Phytochemical Unscrambling of Flowers Originating from Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) P. K. Hsiao and Astragalus membranaceus (Fisch.) Bug. by Applying the Intagretive Plant Metabolomics Method Using UHPLC-Q-TOF-MS/MS. Molecules 2023; 28:6115. [PMID: 37630367 PMCID: PMC10458299 DOI: 10.3390/molecules28166115] [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: 07/08/2023] [Revised: 08/10/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) P. K. Hsiao (MO) and Astragalus membranaceus (Fisch.) Bug. (ME) are two primary sources of the Astragalus herb, also known as "Huangqi" in China, which is widely applied to treat hypertension, glomerulonephritis, ischemic heart disease, and diabetes mellitus. As two different sources of the Astragalus herb, the chemical profiles of MO and ME may be different. Previous studies showed abundant differences in chemical composition between MO and ME. Therefore, the by-products of MO and ME, such as Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) P. K. Hsiao flower (MOF) and Astragalus membranaceus (Fisch.) Bug. flower (MEF), may have different phytochemical profiles. In this paper, a metabolomics method combined with ultra-high-performance liquid chromatography and electrospray ionization/quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS/MS) was employed to analyze the components of MOF and MEF. Consequently, the results of principal component analysis (PCA) showed that MOF and MEF could be separated clearly. In total, 31 chemical markers differentiating MOF and MEF were successfully identified, including 22 flavonoids, 8 isoflavones and 1 benzopyran. Among them, the contents of 18 components, including Calycosin, Cyanidin-3-O-glucoside, Quercetin, Rutin, Kaempferol, Formononetin, Isomucronulatol and Prim-O-glucosylcimifugin in MEF, were significantly higher than in MOF. In turn, the contents of another 13 components, covering Biochanin A, Tectoridin, Isomucronulatol-7-O-glucoside, Liquiritin, Rhamnetin, etc., were lower in the MEF group than that in the MOF group. It is worth noting that flavonoids, especially flavonoid glycosides, were the primary active chemical ingredients in MOF and MEF. The 18 ingredients in MEF with a higher level carried out diverse activities, like anti-oxidant, anti-inflammatory, anti-bacterial and anti-tumor activities, which led us to speculate that MEF may have greater pharmacological effects and potential development prospects than MOF. The present results displayed that the contents of ingredients in the two different species of plants were radically different, and there was significant uniqueness to the components of MOF and MEF. Our study not only provides helpful chemical information for further quality assessment and active mechanism research of MOF and MEF but also offers scientific support for the resource utilization of MOF and MEF.
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Affiliation(s)
- Qi Liu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Jinghui Li
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Meiling Gu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Wanying Kong
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Zhao Lin
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Jialin Mao
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Meng Zhang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Liyan Jiang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Can Liu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Yumei Wang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Jicheng Liu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
- The Research Institute of Astragalus Industry, Qiqihar Academy of Medical Sciences, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China
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Tau-aggregation inhibitors derived from Streptomyces tendae MCCC 1A01534 protect HT22 cells against okadaic acid-induced damage. Int J Biol Macromol 2023; 231:123170. [PMID: 36621732 DOI: 10.1016/j.ijbiomac.2023.123170] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 12/20/2022] [Accepted: 01/03/2023] [Indexed: 01/07/2023]
Abstract
Alzheimer's disease (AD) is an age-related neurodegenerative disease characterized by tau aggregating into neurofibrillary tangles. Targeting tau aggregation is one of the most critical strategies for AD treatment and prevention. Herein, a high-throughput screening of tau-aggregation inhibitors was performed by thioflavin T (ThT) fluorescence assay and tauR3 peptides. According to bioactivity-guided isolation, homoprejadomycin (1) was obtained from the marine bacterium Streptomyces tendae MCCC 1A01534. Two new stable derivatives, 2 and 3, were yielded in a one-step reaction. By ThT assay, transmission electron microscopy, and circular dichroism, we demonstrated that the angucyclinones 2 and 3 inhibited tau aggregation and disaggregated tau fibrils. In the presence of 2, native tauR3 peptides maintained the disorder conformation, whereas the tauR3 aggregates reduced β-sheet structures. And compound 2 was confirmed to inhibit the aggregation of full-length 2N4R tau protein. Furthermore, 2 with low cytotoxicity protected HT22 cells from okadaic acid-induced damage by suppressing tau aggregates. These results indicated that 2 was a promising lead structure with tau therapeutic potency for AD treatment.
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You S, Wang Y, Guo Y, Guo C, Cao F, Shi W, Yang L, Mi W, Tong L. Activation of the ERK1/2 pathway mediates the neuroprotective effect provided by calycosin treatment. Neurosci Lett 2023; 792:136956. [PMID: 36347338 DOI: 10.1016/j.neulet.2022.136956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 10/25/2022] [Accepted: 11/01/2022] [Indexed: 11/08/2022]
Abstract
Calycosin is a natural product extracted from some plant families and exhibits various biological properties. But the effect of calycosin on cerebral ischemia-reperfusion injury has not been fully elucidated. In this study, the neuroprotective effect of calycosin treatment on the differentiated SH-SY5Y cells exposed to OGD was evaluated using MTT and flow cytometry. Rats that were pretreatment with calycosin were subjected to MCAO, neurological behavior scores and brain infarct volume were evaluated. The protein expression of pERK/ERK were assessed using Western blot. siRNA-pERK and U0126 were administered to investigate the impact of the ERK pathway on calycosin preconditioning. The results demonstrated the neuronal viability in the calycosin-treated SH-SY5Y cells increased significantly, and the rate of apoptosis decreased compared with the Oxygen-glucose deprivation only SH-SY5Y cells. Calycosin pretreatment reduced infarct volume and improved neurological outcome in rats subjected to MCAO. Administration of calycosin increased the ratio of pERK/ERK expression, which was down-regulated in ischemia-reperfusion group. Down-regulation of pERK/ERK significantly attenuated the neuroprotective effect induced by calycosin pretreatment in vitro and in vivo. We concluded calycosin treatment could induce a neuroprotective effect against ischemia, which was related to the regulation of the ERK1/2 pathway.
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Affiliation(s)
- Shaohua You
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China; Department of Pain Medicine, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Yanfeng Wang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Yongxin Guo
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Chao Guo
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, China
| | - Fuyang Cao
- Department of Anesthesiology, The Sixth Medical Center of Chinese PLA General Hospital, Beijing 100048, China
| | - Wenzhu Shi
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Lujia Yang
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Weidong Mi
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China.
| | - Li Tong
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China.
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An F, Zhao R, Xuan X, Xuan T, Zhang G, Wei C. Calycosin ameliorates advanced glycation end product-induced neurodegenerative changes in cellular and rat models of diabetes-related Alzheimer's disease. Chem Biol Interact 2022; 368:110206. [PMID: 36195188 DOI: 10.1016/j.cbi.2022.110206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/20/2022] [Accepted: 09/28/2022] [Indexed: 11/03/2022]
Abstract
Growing pieces of evidence suggest that Alzheimer's disease (AD) is interlinked with Type 2 diabetes mellitus (DM), which has been described as "type 3 DM". In this study, we investigate the neuronal insult attributable to advanced glycation end products (AGEs) as the models of DM-related AD to understand the effects exerted by calycosin on neurodegenerative changes both in vivo and in vitro studies and also studied the associated molecular mechanisms. The results reported herein revealed that the viability of the PC12 cells induced by AGEs increased when treated with calycosin. It was also observed that the learning and memory abilities of AGE-induced DM-related AD rats improved under these conditions. Analysis of the reported results indicates that calycosin can effectively down-regulate the activity of GSK-3β to result in the reversal of the process of tau hyperphosphorylation, inhibit the expression of RAGE and BACE-1 proteins, resulting in a decrease in the production of β-amyloid and regulate the PGC-1α/TFAM signaling pathway to repair mitochondrial dysfunction. It can be inferred that calycosin can potentially exhibit important therapeutic properties that can be exploited during the treatment of AD, especially DM-related AD.
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Affiliation(s)
- Fengmao An
- Institute of Pharmaceutical Chemistry and Pharmacology, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China; Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China; Medical College, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China.
| | - Ruyi Zhao
- Department of Medicine and Food, Tongliao Vocational College, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China.
| | - Xinran Xuan
- First Clinical Medical College, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China.
| | - Tianqi Xuan
- Institute of Pharmaceutical Chemistry and Pharmacology, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China; Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China; Medical College, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China.
| | - Guowei Zhang
- College of Nursing, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China; Institute of Dementia, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China.
| | - Chengxi Wei
- Institute of Pharmaceutical Chemistry and Pharmacology, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China; Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China; Medical College, Inner Mongolia Minzu University, Tongliao, 028000, Inner Mongolia Autonomous Region, PR China.
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Jaragh-Alhadad LA, Falahati M. Copper oxide nanoparticles promote amyloid-β-triggered neurotoxicity through formation of oligomeric species as a prelude to Alzheimer's diseases. Int J Biol Macromol 2022; 207:121-129. [PMID: 35259430 DOI: 10.1016/j.ijbiomac.2022.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/12/2022] [Accepted: 03/02/2022] [Indexed: 12/28/2022]
Abstract
Protein oligomerization is involved in the progression of Alzheimer's disease (AD). In general, a particle that can accelerate protein oligomerization should be considered a toxic material. Several studies reported the progress of nanoparticles (NPs) such as copper oxide (CuO) in biomedical platforms, however, they may have the ability to promote the protein oligomerization process. Here, we aimed to study the effect of CuO NPs on amyloid β1-42 (Aβ1-42) oligomerization and relevant neurotoxicity. CuO NPs were synthesized by precipitation technique and characterized by several methods such as ThT, Congo red, CD spectroscopic methods, and TEM imaging. The outcomes indicated that the fabricated CuO NPs with a size of around 50 nm led to a remarkable acceleration in Aβ1-42 oligomerization in a concentration-dependent manner through shortening the nucleation step and promoting the fibrillization rate. Moreover, cellular assays revealed that Aβ1-42 oligomers aged with CuO NPs were more toxic than Aβ1-42 oligomers untreated against SH-SY5Y cells in triggering cell mortality, membrane leakage, oxidative stress, and apoptosis. In conclusion, this study provides important information about the adverse effects of CuO NPs against proteins in the central nervous system to promote the formation of cytotoxic oligomers.
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Affiliation(s)
- Laila Abdulmohsen Jaragh-Alhadad
- Department of Chemistry, College of Science, Kuwait University, Safat 13060, Kuwait; Cardiovascular and Metabolic Sciences Department, Learner Research Institute, Cleveland Clinic, OH 44195, USA.
| | - Mojtaba Falahati
- Laboratory Experimental Oncology, Department of Pathology, Erasmus MC, 3015GD Rotterdam, the Netherlands; Department of Nanotechnology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
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Han T, Zhang L, Tong W, Zhao J, Wang W. Exploring the interaction of calycosin with cyclin D1 protein as a regulator of cell cycle progression in lung cancer cells. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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Li X, Zhang X, Xing R, Qi F, Dong J, Li D, Tian X, Yu B, Huang M, Zhang L, Yuan X, Yang Y, Wu H, Zang L, Mao X, Sui R. Syringic acid demonstrates promising protective effect against tau fibrillization and cytotoxicity through regulation of endoplasmic reticulum stress-mediated pathway as a prelude to Alzheimer's disease. Int J Biol Macromol 2021; 192:491-497. [PMID: 34599991 DOI: 10.1016/j.ijbiomac.2021.09.173] [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] [Received: 07/07/2021] [Revised: 09/04/2021] [Accepted: 09/24/2021] [Indexed: 01/06/2023]
Abstract
There are several studies reporting that different plant-based metabolites are potential inhibitors of protein amyloid fibrillation. As chemical features of metabolites can regulate protein aggregation process, in the present in vitro investigation, tau protein was selected as a model of Alzheimer's disease to elaborate the inhibitory effect of syringic acid (SA) on its assembly and associated neurotoxicity in aggregation conditions. Extrinsic fluorescence, Congo red adsorption, and CD spectroscopic studies, TEM, size-exclusion chromatography, and MALDI-TOF mass spectrometry analysis along with MTT and qRT-PCR assays were performed to assess the inhibitory effects of SA against tau aggregation and neurotoxicity. It was shown that SA has the tendency to control the aggregation of the tau proteins through modulating the amyloid kinetic parameters, exposure of hydrophobic residues, and structural changes. Moreover, the structures formed in the presence of SA recovered the viability of neuron-like cells (SH-SY5Y) through regulation of endoplasmic reticulum stress signaling pathway by downregulation of ATF-6, caspase-8 and caspase-3 mRNA. In conclusion, it can be suggested that SA may be used as a potential small molecule in the development of therapeutic platforms against Alzheimer's disease.
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Affiliation(s)
- Xidong Li
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Xuejie Zhang
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Ruixian Xing
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Fengjiao Qi
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Jing Dong
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Dan Li
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Xue Tian
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Bo Yu
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Meiyi Huang
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Lei Zhang
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Xueling Yuan
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Yang Yang
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Huiru Wu
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Lie Zang
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Xin Mao
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Rubo Sui
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China.
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The Beneficial Role of Natural Endocrine Disruptors: Phytoestrogens in Alzheimer's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:3961445. [PMID: 34527172 PMCID: PMC8437597 DOI: 10.1155/2021/3961445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/17/2021] [Indexed: 01/14/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia with a growing incidence rate primarily among the elderly. It is a neurodegenerative, progressive disorder leading to significant cognitive loss. Despite numerous pieces of research, no cure for halting the disease has been discovered yet. Phytoestrogens are nonestradiol compounds classified as one of the endocrine-disrupting chemicals (EDCs), meaning that they can potentially disrupt hormonal balance and result in developmental and reproductive abnormalities. Importantly, phytoestrogens are structurally, chemically, and functionally akin to estrogens, which undoubtedly has the potential to be detrimental to the organism. What is intriguing, although classified as EDCs, phytoestrogens seem to have a beneficial influence on Alzheimer's disease symptoms and neuropathologies. They have been observed to act as antioxidants, improve visual-spatial memory, lower amyloid-beta production, and increase the growth, survival, and plasticity of brain cells. This review article is aimed at contributing to the collective understanding of the role of phytoestrogens in the prevention and treatment of Alzheimer's disease. Importantly, it underlines the fact that despite being EDCs, phytoestrogens and their use can be beneficial in the prevention of Alzheimer's disease.
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Zhang M, Hu G, Shao N, Qin Y, Chen Q, Wang Y, Zhou P, Cai B. Thioredoxin-interacting protein (TXNIP) as a target for Alzheimer's disease: flavonoids and phenols. Inflammopharmacology 2021; 29:1317-1329. [PMID: 34350508 DOI: 10.1007/s10787-021-00861-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/27/2021] [Indexed: 12/15/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease characterized by amyloid plaques and tangles that have become the fifth leading cause of death worldwide. Previous studies have found that thioredoxin interacting protein (TXNIP) expression was increased during the development of AD neurons. TXNIP separates from the TXNIP-thioredoxin complex, and the TXNIP-NLRP3 complex assembles ASC and pro-caspase-1 to form the NLRP3 inflammasome, which triggers AD inflammation and apoptosis. CB-dock was used to explore whether 21 natural flavonoids and phenols target TXNIP based on references. Docking results showed that rutin, puerarin, baicalin, luteolin and quercetin are the most potent TXNIP inhibitors, and among them, rutin as the most effective flavonoid. And rosmarinic acid is the most potent TXNIP inhibitor of phenols. These phytochemicals could be helpful to find the lead compounds in designing and developing novel agents for Alzheimer's disease.
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Affiliation(s)
- Meng Zhang
- Department of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China
| | - Guanhua Hu
- Department of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China
| | - Nan Shao
- Department of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China
| | - Yunpeng Qin
- Department of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China
| | - Qian Chen
- Department of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China
| | - Yan Wang
- Department of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China
| | - Peng Zhou
- Department of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China. .,Research Institute of Integrated Traditional Chinese and Western Medicine, Anhui Academy of Chinese Medicine, Hefei, Anhui, 230012, China. .,Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, Anhui, 230012, China.
| | - Biao Cai
- Department of Integrated Traditional Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China. .,Research Institute of Integrated Traditional Chinese and Western Medicine, Anhui Academy of Chinese Medicine, Hefei, Anhui, 230012, China. .,Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, Anhui, 230012, China.
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Yang H, Khan S, Sun A, Bai Q, Cheng H, Akhtari K. Enhancement of interferon gamma stability as an anticancer therapeutic protein against hepatocellular carcinoma upon interaction with calycosin. Int J Biol Macromol 2021; 185:813-820. [PMID: 34186122 DOI: 10.1016/j.ijbiomac.2021.06.159] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/13/2021] [Accepted: 06/24/2021] [Indexed: 11/30/2022]
Abstract
The stability of IFN-γ as a therapeutic protein can play a key role on its anticancer effects. Herein, we explored the thermodynamic parameters and conformational stability of IFN-γ in the presence of calycosin, the main active compound of Radix astragali, by different biophysical and theoretical analysis. Afterwards, the improved anticancer effects of IFN-γ-calycosin interaction relative to IFN-γ alone were assessed on hepatocellular carcinoma (HepG2) cell line by MTT and caspase assays. ITC data indicated that upon interaction of calycosin with IFN-γ the binding and thermodynamic parameters were as follows: Kd = 1.9 μM, ΔG° = -32.45 kJ/mol, ΔH° = -11.91 kJ/mol, and TΔS° = 20.54 kJ/mol. ANS/synchronous fluorescence, CD and UV-Vis spectroscopy studies indicated that the interaction between calycosin and IFN-γ caused the folding of the IFN-γ backbone in to a more packed structure with enhanced α-helix content and higher melting temperature (Tm) value. The spectroscopic outcomes were then verified by molecular docking and molecular dynamic analysis. It was also shown that after incubation of the IFN-γ samples at 50 °C for 60 min in the presence of calycosin (5 μM), the IFN-γ-calycosin system showed a significant antiproliferative effects against hepatocellular carcinoma (HepG2) cells through caspase-9/3 activation and this anticancer effect was more pronounced than free IFN-γ. This data may provide useful information about the development of IFN-γ-based therapeutic platforms.
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Affiliation(s)
- Huiyu Yang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China.
| | - Suliman Khan
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Aimin Sun
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, PR China
| | - Qian Bai
- Department of Anesthesiology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China.
| | - Haowei Cheng
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, PR China
| | - Keivan Akhtari
- Department of Physics, University of Kurdistan, Sanandaj, Iran
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Yuan X, Wang Z, Zhang L, Sui R, Khan S. Exploring the inhibitory effects of liquiritigenin against tau fibrillation and related neurotoxicity as a model of preventive care in Alzheimer's disease. Int J Biol Macromol 2021; 183:1184-1190. [PMID: 33965487 DOI: 10.1016/j.ijbiomac.2021.05.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 04/18/2021] [Accepted: 05/03/2021] [Indexed: 01/12/2023]
Abstract
Aggregation of tau protein into the form of insoluble amyloid fibrils is linked with Alzheimer's disease. The identification of potential small molecules that can inhibit tau protein from undergoing aggregation has received a great deal of interest, recently. In the present study, the possible inhibitory effects of liquiritigenin as a member of chiral flavanone family on tau amyloid fibrils formation and their resulting neurotoxicity were assessed by different biophysical and cellular assays. The inhibitory effect of the liquiritigenin against tau amyloid formation was investigated using thioflavin T (ThT) and 1-Anilino-8-naphthalene sulfonate (ANS) fluorescence spectroscopy, Congo red (CR) binding assays, transmission electron microscopy (TEM) analysis, and circular dichroism (CD) spectroscopy. Neurotoxicity assays were also performed against neuron-like cells (SH-SY5Y) using 3-(4,5-Dimethylthiazol)-2,5-diphenyltetrazolium bromide (MTT) reduction, reactive oxygen species (ROS), catalase (CAT) and caspase-3 activity measurements. We found that liquiritigenin served as an efficient inhibitor of tau amyloid fibrils formation through prevention of structural transition in tau structure, exposure of hydrophobic patches and their associated neurotoxicity mediated by decrease in the production of ROS and caspase-3 activity and elevation of CAT activity. These data may finally find applications in the development of promising inhibitors against amyloid fibril formation and treatment of Alzheimer's disease.
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Affiliation(s)
- Xueling Yuan
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China
| | - Zhuo Wang
- School of Nursing, Jinzhou Medical University, Jinzhou 121099, China
| | - Lei Zhang
- School of Nursing, Jinzhou Medical University, Jinzhou 121099, China
| | - Rubo Sui
- Department of Neurology, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121099, China.
| | - Suliman Khan
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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