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Guan PP, Ge TQ, Wang P. As a Potential Therapeutic Target, C1q Induces Synapse Loss Via Inflammasome-activating Apoptotic and Mitochondria Impairment Mechanisms in Alzheimer's Disease. J Neuroimmune Pharmacol 2023; 18:267-284. [PMID: 37386257 DOI: 10.1007/s11481-023-10076-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 06/16/2023] [Indexed: 07/01/2023]
Abstract
C1q, the initiator of the classical pathway of the complement system, is activated during Alzheimer's disease (AD) development and progression and is especially associated with the production and deposition of β-amyloid protein (Aβ) and phosphorylated tau in β-amyloid plaques (APs) and neurofibrillary tangles (NFTs). Activation of C1q is responsible for induction of synapse loss, leading to neurodegeneration in AD. Mechanistically, C1q could activate glial cells, which results in the loss of synapses via regulation of synapse pruning and phagocytosis in AD. In addition, C1q induces neuroinflammation by inducing proinflammatory cytokine secretion, which is partially mediated by inflammasome activation. Activation of inflammasomes might mediate the effects of C1q on induction of synapse apoptosis. On the other hand, activation of C1q impairs mitochondria, which hinders the renovation and regeneration of synapses. All these actions of C1q contribute to the loss of synapses during neurodegeneration in AD. Therefore, pharmacological, or genetic interventions targeting C1q may provide potential therapeutic strategies for combating AD.
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Affiliation(s)
- Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, 110819, Shenyang, People's Republic of China
| | - Tong-Qi Ge
- College of Life and Health Sciences, Northeastern University, 110819, Shenyang, People's Republic of China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, 110819, Shenyang, People's Republic of China.
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Guan PP, Ding WY, Wang P. Molecular mechanism of acetylsalicylic acid in improving learning and memory impairment in APP/PS1 transgenic mice by inhibiting the abnormal cell cycle re-entry of neurons. Front Mol Neurosci 2022; 15:1006216. [PMID: 36263378 PMCID: PMC9575964 DOI: 10.3389/fnmol.2022.1006216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/01/2022] [Indexed: 11/13/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disorder accompanied by the loss and apoptosis of neurons. Neurons abnormally enter the cell cycle, which results in neuronal apoptosis during the course of AD development and progression. However, the mechanisms underlying cell cycle re-entry have been poorly studied. Using neuroblastoma (N) 2aSW and APP/PS1 transgenic (Tg) mice as in vitro and in vivo AD models, we found that the expression of cyclin-dependent kinase (CDK)1/2/4 and cyclin A2/B1/D3/E1 was increased while the protein expression of p18 and p21 was decreased, which led to enhanced cell cycle re-entry in a β-amyloid protein (Aβ)-dependent mechanism. By preparing and treating with the temperature-sensitive chitosan-encapsulated drug delivery system (CS), the abnormal expression of CDK1/2/4, cyclin A2/B1/D3/E1 and p18/21 was partially restored by acetylsalicylic acid (ASA), which decreased the apoptosis of neurons in APP/PS1 Tg mice. Moreover, CDK4 and p21 mediated the effects of ASA on activating transcription factor (TF) EB via peroxisome proliferator-activated receptor (PPAR) α, thus leading to the uptake of Aβ by astrocytes in a low-density lipoprotein receptor (Ldlr)-dependent mechanism. Moreover, the mechanisms of Aβ-degrading mechanisms are activated, including the production of microtubule-associated protein light chain (LC) 3II and Lamp2 protein by ASA in a PPARα-activated TFEB-dependent manner. All these actions contribute to decreasing the production and deposition of Aβ, thus leading to improved cognitive decline in APP/PS1 Tg mice.
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Wang P, Guan PP, Yu X, Zhang LC, Su YN, Wang ZY. Addendum: Prostaglandin I 2 Attenuates Prostaglandin E 2-Stimulated Expression of Interferon γ in a β-Amyloid Protein- and NF-κB-Dependent Mechanism. Sci Rep 2022; 12:8394. [PMID: 35589946 PMCID: PMC9120510 DOI: 10.1038/s41598-022-12462-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, People's Republic of China.
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Xin Yu
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Li-Chao Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Ya-Nan Su
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, People's Republic of China.
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Guan PP, Zhou YZ, Song WT, Cheng JW, Wang K. [Investigation and analysis of underground noise in Sichuan coal mines]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:149-151. [PMID: 35255586 DOI: 10.3760/cma.j.cn121094-20200708-00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To understand the harm degree of underground noise and provide basis for noise control. Methods: In November 2019, 13 typical coal mines in Sichuan Province were selected as the research objects, and a total of 1203 sites and 609 jobs of noise exposure were investigated. Results: The noise intensity P75 >80 dB (A) was measured. The noise intensity of the inspection place of the air compressor is >86 dB (A) , the noise intensity of the inspection place of the gas drainage and the operation place of the main fan is between 80-85 dB (A) . Conclusion: Besides the harm of dust, noise exposure should also be paid attention to, and the measures of sound absorption and sound insulation should be taken or personal protection should be strengthened.
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Affiliation(s)
- P P Guan
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Y Z Zhou
- Safety Technology Center of Sichuan Coal Mine Safety Administration, Chengdu 650045, China
| | - W T Song
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - J W Cheng
- Institute of Occupational Health and Protection Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - K Wang
- Institute of Occupational Health and Protection Engineering, China University of Mining and Technology, Xuzhou 221116, China
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Guan PP, Cao LL, Yang Y, Wang P. Calcium Ions Aggravate Alzheimer's Disease Through the Aberrant Activation of Neuronal Networks, Leading to Synaptic and Cognitive Deficits. Front Mol Neurosci 2021; 14:757515. [PMID: 34924952 PMCID: PMC8674839 DOI: 10.3389/fnmol.2021.757515] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 11/04/2021] [Indexed: 12/11/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disease that is characterized by the production and deposition of β-amyloid protein (Aβ) and hyperphosphorylated tau, leading to the formation of β-amyloid plaques (APs) and neurofibrillary tangles (NFTs). Although calcium ions (Ca2+) promote the formation of APs and NFTs, no systematic review of the mechanisms by which Ca2+ affects the development and progression of AD has been published. Therefore, the current review aimed to fill the gaps between elevated Ca2+ levels and the pathogenesis of AD. Specifically, we mainly focus on the molecular mechanisms by which Ca2+ affects the neuronal networks of neuroinflammation, neuronal injury, neurogenesis, neurotoxicity, neuroprotection, and autophagy. Furthermore, the roles of Ca2+ transporters located in the cell membrane, endoplasmic reticulum (ER), mitochondria and lysosome in mediating the effects of Ca2+ on activating neuronal networks that ultimately contribute to the development and progression of AD are discussed. Finally, the drug candidates derived from herbs used as food or seasoning in Chinese daily life are summarized to provide a theoretical basis for improving the clinical treatment of AD.
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Affiliation(s)
- Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Long-Long Cao
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yi Yang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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Cao LL, Guan PP, Zhang SQ, Yang Y, Huang XS, Wang P. Downregulating expression of OPTN elevates neuroinflammation via AIM2 inflammasome- and RIPK1-activating mechanisms in APP/PS1 transgenic mice. J Neuroinflammation 2021; 18:281. [PMID: 34861878 PMCID: PMC8641240 DOI: 10.1186/s12974-021-02327-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 11/17/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Neuroinflammation is thought to be a cause of Alzheimer's disease (AD), which is partly caused by inadequate mitophagy. As a receptor of mitophagy, we aimed to reveal the regulatory roles of optineurin (OPTN) on neuroinflammation in the pathogenesis of AD. METHODS BV2 cells and APP/PS1 transgenic (Tg) mice were used as in vitro and in vivo experimental models to determine the regulatory roles of OPTN in neuroinflammation of AD. Sophisticated molecular technologies including quantitative (q) RT-PCR, western blot, enzyme linked immunosorbent assay (ELISA), co-immunoprecipitation (Co-IP) and immunofluorescence (IF) were employed to reveal the inherent mechanisms. RESULTS As a consequence, key roles of OPTN in regulating neuroinflammation were identified by depressing the activity of absent in melanoma 2 (AIM2) inflammasomes and receptor interacting serine/threonine kinase 1 (RIPK1)-mediated NF-κB inflammatory mechanisms. In detail, we found that expression of OPTN was downregulated, which resulted in activation of AIM2 inflammasomes due to a deficiency in mitophagy in APP/PS1 Tg mice. By ectopic expression, OPTN blocks the effects of Aβ oligomer (Aβo) on activating AIM2 inflammasomes by inhibiting mRNA expression of AIM2 and apoptosis-associated speck-like protein containing a C-terminal caspase recruitment domain (ASC), leading to a reduction in the active form of caspase-1 and interleukin (IL)-1β in microglial cells. Moreover, RIPK1 was also found to be negatively regulated by OPTN via ubiquitin protease hydrolysis, resulting in the synthesis of IL-1β by activating the transcriptional activity of NF-κB in BV2 cells. As an E3 ligase, the UBAN domain of OPTN binds to the death domain (DD) of RIPK1 to facilitate its ubiquitination. Based on these observations, ectopically expressed OPTN in APP/PS1 Tg mice deactivated microglial cells and astrocytes via the AIM2 inflammasome and RIPK-dependent NF-κB pathways, leading to reduce neuroinflammation. CONCLUSIONS These results suggest that OPTN can alleviate neuroinflammation through AIM2 and RIPK1 pathways, suggesting that OPTN deficiency may be a potential factor leading to the occurrence of AD.
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Affiliation(s)
- Long-Long Cao
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China
| | - Shen-Qing Zhang
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China
| | - Yi Yang
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China
| | - Xue-Shi Huang
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China.
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China.
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Guan PP, Jia JF, Wang P. Dietary magnesium ions block the effects of nutrient deficiency on inducing the formation of LC3B autophagosomes and disrupting the proteolysis of autolysosomes to degrade β-amyloid protein by activating cyclooloxygenase-2 at tyrosine 385. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Zhang ZG, Li YY, Lin B, Guan PP, Mu Y, Qiao WJ, Zhang JS, Huang XS, Han L. New phenolic glycosides from Anemone chinensis Bunge and their antioxidant activity. Nat Prod Res 2021; 36:5009-5015. [PMID: 33908333 DOI: 10.1080/14786419.2021.1917569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
ABATRACTNine compounds, five phenolic glycosides (1, 2, 4-6), three phenylpropanoids (7-9), and a furanone glycoside (3), were isolated from aqueous soluble extract of the dried roots of Anemone chinensis Bunge. The structures of new compounds (1-4) were elucidated by comprehensive spectroscopic data analysis as well as chemical evidence. Pulsatillanin A (1) demonstrated significant antioxidant effects through scavenging free radical in DPPH assay, and relieved the oxidative stress in LPS-induced RAW 264.7 cells by reducing ROS production, enhancing antioxidant enzyme SOD activity, replenishing depleted GSH in a dose-dependent manner. Western blot analysis revealed that 1 showed antioxidant activity via activating Nrf2 signaling pathway.
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Affiliation(s)
- Zeng-Guang Zhang
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, People's Republic of China
| | - Yuan-Yuan Li
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, People's Republic of China
| | - Bin Lin
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Pei-Pei Guan
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, People's Republic of China
| | - Yu Mu
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, People's Republic of China
| | - Wen-Jun Qiao
- Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, People's Republic of China
| | - Jing-Sheng Zhang
- Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, People's Republic of China
| | - Xue-Shi Huang
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, People's Republic of China
| | - Li Han
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, People's Republic of China
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Xu GB, Guan PP, Wang P. Prostaglandin A1 Decreases the Phosphorylation of Tau by Activating Protein Phosphatase 2A via a Michael Addition Mechanism at Cysteine 377. Mol Neurobiol 2020; 58:1114-1127. [PMID: 33095414 DOI: 10.1007/s12035-020-02174-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/14/2020] [Indexed: 12/27/2022]
Abstract
Prostaglandin (PG) A1 is a metabolic product of cyclooxygenase 2 (COX-2) that is potentially involved in regulating the development and progression of Alzheimer's disease (AD). PGA1 is a cyclopentenone (cy) PG characterized by the presence of a chemically reactive α,β-unsaturated carbonyl. PGA1 is potentially involved in the regulation of multiple biological processes via Michael addition; however, the specific roles of PGA1 in AD remain unclear. TauP301S transgenic (Tg) mice were used as in vivo AD models, and neuroblastoma (N) 2a cells were used as an in vitro neuronal model. The PGA1-binding proteins were identified by HPLC-MS-MS after intracerebroventricular injection (i.c.v) of PGA1. Western blotting was used to determine tau phosphorylation in PGA1-treated Tg mice in the absence or in the presence of okadaic acid (OA), an inhibitor of protein phosphatase (PP) 2A. A combination of pull-down assay, immunoprecipitation, western blotting, and HPLC-MS-MS was used to determine that the PP2A scaffold subunit A alpha (PPP2R1A) is activated by the direct binding of PGA1 to cysteine 377. The effect of inhibiting tau hyperphosphorylation was tested in the Morris maze to determine the inhibitory effects of PGA1 on cognitive decline in tauP301S Tg mice. Incubation with N2a cells, pull-down assay, and mass spectrometry (MS) analysis revealed and indicated that PGA1 binds to more than 1000 proteins; some of these proteins are associated with AD and especially with tauopathies. Moreover, short-term administration of PGA1 in tauP301S Tg mice significantly decreased tau phosphorylation at Thr181, Ser202, and Ser404 in a dose-dependent manner. This effect was caused by the activation of PPP2R1A in tauP301S Tg mice. Importantly, PGA1 can form a Michael adduct with cysteine 377 of PPP2R1A, which is critical for the enzymatic activity of PP2A. Long-term treatment of tauP301S Tg mice with PGA1 activated PP2A and significantly reduced tau phosphorylation resulting in improvements in cognitive decline in tauP301S Tg mice. Our data provided new insight into the mechanisms of the ameliorating effects of PGA1 on cognitive decline in tauP301S Tg mice by activating PP2A via a mechanism involving the formation of a Michael adduct with cysteine 377 of PPP2R1A.
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Affiliation(s)
- Guo-Biao Xu
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China.,Liaoning Cheng Da Biotechnology Co., Ltd, Shenyang, 110179, People's Republic of China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China.
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Cao LL, Guan PP, Liang YY, Huang XS, Wang P. Cyclooxygenase-2 is Essential for Mediating the Effects of Calcium Ions on Stimulating Phosphorylation of Tau at the Sites of Ser 396 and Ser 404. J Alzheimers Dis 2020; 68:1095-1111. [PMID: 30883354 DOI: 10.3233/jad-181066] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Alzheimer's disease (AD) is reported to be associated with the accumulation of calcium ions (Ca2+), which is responsible for the phosphorylation of tau. Although a series of evidence have demonstrated this phenomenon, the inherent mechanisms remain unknown. Using tauP301S and cyclooxygenase-2 (COX-2) transgenic mice and neuroblastoma (n)2a cells as in vivo and in vitro experimental models, we found that Ca2+ stimulates the phosphorylation of tau by activating COX-2 in a prostaglandin (PG) E2-dependent EP receptor-activating manner. Specifically, Ca2+ incubation stimulated COX-2 and PGE2 synthase activity, microsomal PGE synthase 1 and the synthesis of PGE2 by activating the transcriptional activity of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) in n2a cells. Elevated levels of PGE2 were responsible for phosphorylating tau in an EP-1, -2, and -3 but not EP4-dependent glycogen synthase kinase 3-activating manner. These observations were corroborated by results that showed tau was phosphorylated when it colocalized with activated COX-2 in tauP301S and COX-2 transgenic mice or n2a cells. To further validate these observations, treatment of mice with the COX-2 inhibitor rofecoxib decreased the phosphorylation of tau via EP1-3 but not EP4. Collectively, our observations fill the gaps between Ca2+ and the phosphorylation of tau in a COX-2-dependent mechanism, which potentially provides therapeutic targets for combating AD.
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Affiliation(s)
- Long-Long Cao
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Yun-Yue Liang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Xue-Shi Huang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
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Zou YH, Guan PP, Zhang SQ, Guo YS, Wang P. Rofecoxib Attenuates the Pathogenesis of Amyotrophic Lateral Sclerosis by Alleviating Cyclooxygenase-2-Mediated Mechanisms. Front Neurosci 2020; 14:817. [PMID: 32903591 PMCID: PMC7438558 DOI: 10.3389/fnins.2020.00817] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 07/13/2020] [Indexed: 12/11/2022] Open
Abstract
Cyclooxygenase-2 (COX-2) is reported to be activated during the course of amyotrophic lateral sclerosis (ALS) development and progression. However, the roles of COX-2 in aggravating ALS and the underlying mechanism have been largely overlooked. To reveal the mechanisms, the canonical SOD1G93A mouse model was used as an experimental model for ALS in the current study. In addition, a specific inhibitor of COX-2 activity, rofecoxib, was orally administered to SOD1G93A mice. With this in vivo approach, we revealed that COX-2 proinflammatory signaling cascades were inhibited by rofecoxib in SOD1G93A mice. Specifically, the protein levels of COX-2, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α were elevated as a result of activation of astrocytes and microglia during the course of ALS development and progression. These proinflammatory reactions may contribute to the death of neurons by triggering the movement of astrocytes and microglia to neurons in the context of ALS. Treatment with rofecoxib alleviated this close association between glial cells and neurons and significantly decreased the density of inflammatory cells, which helped to restore the number of motor neurons in SOD1G93A mice. Mechanistically, rofecoxib treatment decreased the expression of COX-2 and its downstream signaling targets, including IL-1β and TNF-α, by deactivating glial cells, which in turn ameliorated the progression of SOD1G93A mice by postponing disease onset and modestly prolonging survival. Collectively, these results provide novel insights into the mechanisms of ALS and aid in the development of new drugs to improve the clinical treatment of ALS.
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Affiliation(s)
- Yan-Hui Zou
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shen-Qing Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yan-Su Guo
- Beijing Geriatric Healthcare Center, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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Lu CD, Ma JK, Luo ZY, Tai QX, Wang P, Guan PP. Transferrin is responsible for mediating the effects of iron ions on the regulation of anterior pharynx-defective-1α/β and Presenilin 1 expression via PGE 2 and PGD 2 at the early stage of Alzheimer's Disease. Aging (Albany NY) 2019; 10:3117-3135. [PMID: 30383537 PMCID: PMC6286844 DOI: 10.18632/aging.101615] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 10/19/2018] [Indexed: 01/03/2023]
Abstract
Transferrin (Tf) is an important iron-binding protein postulated to play a key role in iron ion (Fe) absorption via the Tf receptor (TfR), which potentially contributes to the pathogenesis of Alzheimer’s disease (AD). However, the role of Tf in AD remains unknown. Using mouse-derived neurons and APP/PS1 transgenic (Tg) mice as model systems, we firstly revealed the mechanisms of APH-1α/1β and presenilin 1 (PS1) upregulation by Fe in prostaglandin (PG) E2- and PGD2-dependent mechanisms. Specifically, Fe stimulated the expression of mPGES-1 and the production of PGE2 and PGD2 via the Tf and TfR system. Highly accumulated PGE2 markedly induced the expression of anterior pharynx-defective-1α and -1β (APH-1α/1β) and PS1 via an EP receptor-dependent mechanism. In contrast, PGD2 suppressed the expression of APH-1α/1β and PS1 via a prostaglandin D2 (DP) receptor-dependent mechanism. As the natural dehydrated product of PGD2, 15d-PGJ2 exerts inhibitory effects on the expression of APH-1α/1β and PS1 in a peroxisome proliferator-activated receptor (PPAR) γ-dependent manner. The expression of APH-1α/1β and PS1 ultimately determined the production and deposition of β-amyloid protein (Aβ), an effect that potentially contributes to the pathogenesis of AD.
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Affiliation(s)
- Chen-Di Lu
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Ji-Kang Ma
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Zheng-Yang Luo
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Qun-Xi Tai
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, P. R. China
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Guan PP, Liang YY, Cao LL, Yu X, Wang P. Cyclooxygenase-2 Induced the β-Amyloid Protein Deposition and Neuronal Apoptosis Via Upregulating the Synthesis of Prostaglandin E 2 and 15-Deoxy-Δ 12,14-prostaglandin J 2. Neurotherapeutics 2019; 16:1255-1268. [PMID: 31392591 PMCID: PMC6985346 DOI: 10.1007/s13311-019-00770-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Elevated levels of cyclooxygenase-2 (COX-2) and prostaglandins (PGs) have been shown to be involved in the pathogenesis of Alzheimer's disease. Analysis of the underlying mechanisms elucidated a function of sequential PGE2 and PGD2 synthesis in regulating β-amyloid protein (Aβ) deposition by modulating tumor necrosis factor α (TNF-α)-dependent presenilin (PS)1/2 activity in COX-2 and APP/PS1 crossed mice. Specifically, COX-2 overexpression accelerates the expression of microsomal PGE synthase-1 (mPGES-1) and lipocalin-type prostaglandin D synthase (L-PGDS), leading to the synthesis of PGE2 and 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) in 6-month-old APP/PS1 mice. Consequently, PGE2 has the ability to increase Aβ production by enhancing the expression of PS1/2 in a TNF-α-dependent manner, which accelerates the cognitive decline of COX-2/APP/PS1 mice. More interestingly, low concentrations of 15d-PGJ2 treatment facilitate the effects of PGE2 on the deposition of Aβ via TNF-α-dependent PS1/2 mechanisms. In contrast, high concentrations of 15d-PGJ2 treatment inhibit the deposition of Aβ via suppressing the expression of TNF-α-dependent PS1/2. In this regard, a high concentration of 15d-PGJ2 appears to be a therapeutic agent against Alzheimer's disease. However, the high 15d-PGJ2 concentration treatment induces neuronal apoptosis via increasing the protein levels of Bax, cleaved caspase-3, and DFF45, which further impairs the learning ability of APP/PS1 mice.
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Affiliation(s)
- Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, No. 3-11, Wenhua Road, Shenyang, 110819, China
| | - Yun-Yue Liang
- College of Life and Health Sciences, Northeastern University, No. 3-11, Wenhua Road, Shenyang, 110819, China
| | - Long-Long Cao
- College of Life and Health Sciences, Northeastern University, No. 3-11, Wenhua Road, Shenyang, 110819, China
| | - Xin Yu
- College of Life and Health Sciences, Northeastern University, No. 3-11, Wenhua Road, Shenyang, 110819, China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, No. 3-11, Wenhua Road, Shenyang, 110819, China.
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Cao LL, Guan PP, Liang YY, Huang XS, Wang P. Calcium Ions Stimulate the Hyperphosphorylation of Tau by Activating Microsomal Prostaglandin E Synthase 1. Front Aging Neurosci 2019; 11:108. [PMID: 31143112 PMCID: PMC6521221 DOI: 10.3389/fnagi.2019.00108] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 04/25/2019] [Indexed: 01/07/2023] Open
Abstract
Alzheimer’s disease (AD) is reportedly associated with the accumulation of calcium ions (Ca2+), and this accumulation is responsible for the phosphorylation of tau. Although several lines of evidence demonstrate the above phenomenon, the inherent mechanisms remain unknown. Using APP/PS1 Tg mice and neuroblastoma (N)2a cells as in vivo and in vitro experimental models, we observed that Ca2+ stimulated the phosphorylation of tau by activating microsomal PGE synthase 1 (mPGES1) in a prostaglandin (PG) E2-dependent EP receptor-activating manner. Specifically, the highly accumulated Ca2+ stimulated the expression of mPGES1 and the synthesis of PGE2. Treatment with the inhibitor of Ca2+ transporter, NMDAR, attenuated the expression of mPGES1 and the production of PGE2 were attenuated in S(+)-ketamine-treated APP/PS1 Tg mice. Elevated levels of PGE2 were responsible for the hyperphosphorylation of tau in an EP-1-, EP-2-, and EP-3-dependent but not EP4-dependent cyclin-dependent kinase (Cdk) 5-activating manner. Reciprocally, the knockdown of the expression of mPGES1 ameliorated the expected cognitive decline by inhibiting the phosphorylation of tau in APP/PS1 Tg mice. Moreover, CDK5 was found to be located downstream of EP1-3 to regulate the phosphorylation of tau though the cleavage of p35 to p25. Finally, the phosphorylation of tau by Ca2+ contributed to the cognitive decline of APP/PS1 Tg mice.
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Affiliation(s)
- Long-Long Cao
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yun-Yue Liang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Xue-Shi Huang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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15
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Xu GB, Yang LQ, Guan PP, Wang ZY, Wang P. Prostaglandin A1 Inhibits the Cognitive Decline of APP/PS1 Transgenic Mice via PPARγ/ABCA1-dependent Cholesterol Efflux Mechanisms. Neurotherapeutics 2019; 16:505-522. [PMID: 30627958 PMCID: PMC6554490 DOI: 10.1007/s13311-018-00704-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Prostaglandins (PGs) are early and key contributors to chronic neurodegenerative diseases. As one important member of classical PGs, PGA1 has been reported to exert potential neuroprotective effects. However, the mechanisms remain unknown. To this end, we are prompted to investigate whether PGA1 is a useful neurological treatment for Alzheimer's disease (AD) or not. Using high-throughput sequencing, we found that PGA1 potentially regulates cholesterol metabolism and lipid transport. Interestingly, we further found that short-term administration of PGA1 decreased the levels of the monomeric and oligomeric β-amyloid protein (oAβ) in a cholesterol-dependent manner. In detail, PGA1 activated the peroxisome proliferator-activated receptor-gamma (PPARγ) and ATP-binding cassette subfamily A member 1 (ABCA1) signalling pathways, promoting the efflux of cholesterol and decreasing the intracellular cholesterol levels. Through PPARγ/ABCA1/cholesterol-dependent pathway, PGA1 decreased the expression of presenilin enhancer protein 2 (PEN-2), which is responsible for the production of Aβ. More importantly, long-term administration of PGA1 remarkably decreased the formation of Aβ monomers, oligomers, and fibrils. The actions of PGA1 on the production and deposition of Aβ ultimately improved the cognitive decline of the amyloid precursor protein/presenilin1 (APP/PS1) transgenic mice.
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Affiliation(s)
- Guo-Biao Xu
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China
| | - Liu-Qing Yang
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China.
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, No. 3-11. Wenhua Road, Shenyang, 110819, People's Republic of China.
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16
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Guan PP, Ding WY, Wang P. The roles of prostaglandin F 2 in regulating the expression of matrix metalloproteinase-12 via an insulin growth factor-2-dependent mechanism in sheared chondrocytes. Signal Transduct Target Ther 2018; 3:27. [PMID: 30510777 PMCID: PMC6261940 DOI: 10.1038/s41392-018-0029-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 08/08/2018] [Accepted: 08/30/2018] [Indexed: 02/02/2023] Open
Abstract
Osteoarthritis (OA) was recently identified as being regulated by the induction of cyclooxygenase-2 (COX-2) in response to high fluid shear stress. Although the metabolic products of COX-2, including prostaglandin (PG)E2, 15-deoxy-Δ12,14-PGJ2 (15d-PGJ2), and PGF2α, have been reported to be effective in regulating the occurrence and development of OA by activating matrix metalloproteinases (MMPs), the roles of PGF2α in OA are largely overlooked. Thus, we showed that high fluid shear stress induced the mRNA expression of MMP-12 via cyclic (c)AMP- and PGF2α-dependent signaling pathways. Specifically, we found that high fluid shear stress (20 dyn/cm2) significantly increased the expression of MMP-12 at 6 h ( > fivefold), which then slightly decreased until 48 h ( > threefold). In addition, shear stress enhanced the rapid synthesis of PGE2 and PGF2α, which generated synergistic effects on the expression of MMP-12 via EP2/EP3-, PGF2α receptor (FPR)-, cAMP- and insulin growth factor-2 (IGF-2)-dependent phosphatidylinositide 3-kinase (PI3-K)/protein kinase B (AKT), c-Jun N-terminal kinase (JNK)/c-Jun, and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB)-activating pathways. Prolonged shear stress induced the synthesis of 15d-PGJ2, which is responsible for suppressing the high levels of MMP-12 at 48 h. These in vitro observations were further validated by in vivo experiments to evaluate the mechanisms of MMP-12 upregulation during the onset of OA by high fluid shear stress. By delineating this signaling pathway, our data provide a targeted therapeutic basis for combating OA. Shear stress induces cartilage cells to produce hormone-like molecules that activate the expression of an enzyme implicated in the development of osteoarthritis, a degenerative joint disease. Pu Wang and colleagues from Northeastern University in Shenyang, China, exposed human cartilage cells to high fluid shear stress for up to 2 days. This frictional strain rapidly stimulated the production of a proinflammatory enzyme, COX-2, which in turn promoted the synthesis of two hormone-like substances, called prostaglandins. These prostaglandins, PGE2 and PGF2α, then induced expression of an osteoarthritis-associated enzyme called MMP-12 that destroys the supporting structure that surrounds cartilage cells. The researchers, working both in human cells and in mouse models, further delineated several intermediate signaling molecules in the pathway linking shear stress with MMP-12 activation, thereby revealing several new potential drug targets for combating osteoarthritis in patients.
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Affiliation(s)
- Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819 P. R. China
| | - Wei-Yan Ding
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819 P. R. China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819 P. R. China
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17
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Abstract
Elevated levels of cyclooxygenase-2 (COX-2) and prostaglandins (PGs) are involved in the pathogenesis of Alzheimer's disease (AD), which is characterized by the accumulation of β-amyloid protein (Aβ) and tau hyperphosphorylation. However, the gaps in our knowledge of the roles of COX-2 and PGs in AD have not been filled. Here, we summarized the literature showing that COX-2 dysregulation obviously influences abnormal cleavage of β-amyloid precursor protein, aggregation and deposition of Aβ in β-amyloid plaques and the inclusion of phosphorylated tau in neurofibrillary tangles. Neuroinflammation, oxidative stress, synaptic plasticity, neurotoxicity, autophagy, and apoptosis have been assessed to elucidate the mechanisms of COX-2 regulation of AD. Notably, an imbalance of these factors ultimately produces cognitive decline. The current review substantiates our understanding of the mechanisms of COX-2-induced AD and establishes foundations for the design of feasible therapeutic strategies to treat AD.-Guan, P.-P., Wang, P. Integrated communications between cyclooxygenase-2 and Alzheimer's disease.
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Affiliation(s)
- Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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18
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Yu X, Guan PP, Zhu D, Liang YY, Wang T, Wang ZY, Wang P. Magnesium Ions Inhibit the Expression of Tumor Necrosis Factor α and the Activity of γ-Secretase in a β-Amyloid Protein-Dependent Mechanism in APP/PS1 Transgenic Mice. Front Mol Neurosci 2018; 11:172. [PMID: 29899688 PMCID: PMC5988891 DOI: 10.3389/fnmol.2018.00172] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/07/2018] [Indexed: 11/19/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disease characterized by cognitive impairment. The neuropathological features of AD are the aggregation of extracellular amyloid β-protein (Aβ) and tau phosphorylation. Recently, AD was found to be associated with magnesium ion (Mg2+) deficit and tumor necrosis factor-alpha (TNF-α) elevation in the serum or brains of AD patients. To study the relationship between Mg2+ and TNF-α, we used human- or mouse-derived glial and neuronal cell lines or APP/PS1 transgenic (Tg) mice as in vitro and in vivo experimental models, respectively. Our data demonstrates that magnesium-L-threonate (MgT) can decrease the expression of TNF-α by restoring the levels of Mg2+ in glial cells. In addition, PI3-K/AKT and NF-κB signals play critical roles in mediating the effects of Mg2+ on suppressing the expression of TNF-α. In neurons, Mg2+ elevation showed similar suppressive effects on the expression of presenilin enhancer 2 (PEN2) and nicastrin (NCT) through a PI3-K/AKT and NF-κB-dependent mechanism. As the major components of γ-secretase, overexpression of presenilin 1 (PS1), PEN2 and NCT potentially promote the synthesis of Aβ, which in turn activates TNF-α in glial cells. Reciprocally, TNF-α stimulates the expression of PEN2 and NCT in neurons. The crosstalk between TNF-α and Aβ in glial cells and neurons could ultimately aggravate the development and progression of AD.
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Affiliation(s)
- Xin Yu
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Di Zhu
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yun-Yue Liang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Tao Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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Wang Y, Guan PP, Yu X, Guo YS, Zhang YJ, Wang ZY, Wang P. COX-2 metabolic products, the prostaglandin I 2 and F 2α, mediate the effects of TNF-α and Zn 2+ in stimulating the phosphorylation of Tau. Oncotarget 2017; 8:99296-99311. [PMID: 29245902 PMCID: PMC5725093 DOI: 10.18632/oncotarget.21853] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 10/02/2017] [Indexed: 12/25/2022] Open
Abstract
Although the roles of cyclooxygenase-2 (COX-2) and prostaglandins (PGs) in regulating amyloid precursor protein (APP) cleavage and β-amyloid protein (Aβ) production have been the subjects of numerous investigations, their effects on tau phosphorylation have been largely overlooked. Using human TauP301S transgenic (Tg) mice as in vivo model, our results demonstrated that PGI2 and PGF2α mediated the effects of tumor necrosis factor α (TNF-α) and Zinc ions (Zn2+) on upregulating the phosphorylation of tau via the PI3-K/AKT, ERK1/2 and JNK/c-Jun signaling pathways. Specifically, we initially found that high level of Zn2+ upregulates the expression of COX-2 via stimulating the activity of TNF-α in a zinc transporter 3 (ZnT3)-dependent mechanism. COX-2 upregulation then stimulates the phosphorylation of tau at both Ser 202 and Ser 400/Thr 403/Ser 404 via PGI2 and F2α treatment either in i.c.v.-injected mice or in n2a cells. Using n2a cells as in vitro model, we further revealed critical roles for the PI3-K/AKT, ERK1/2 and JNK/c-Jun pathways in mediating the effects of PGI2 and F2α in the phosphorylation of tau. Finally, NS398 treatment delayed the onset of cognitive decline in TauP301S Tg mice according to the nest construction or limb clasping test.
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Affiliation(s)
- Yue Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P.R. China.,Department of Tissue Culture, Liaoning University of Traditional Chinese Medicine, Shenyang, P.R. China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, P.R. China
| | - Xin Yu
- College of Life and Health Sciences, Northeastern University, Shenyang, P.R. China
| | - Yan-Su Guo
- Key laboratory of Hebei Neurology, Hebei Medical University, Shijiazhuang, P.R. China.,Institute of Cardiocerebrovascular Disease, Hebei Medical University, Shijiazhuang, P.R. China
| | - Ying-Jie Zhang
- College of Biology, Hunan University, Changsha, P.R. China.,Shenzhen Institute, Hunan University, Shenzhen, P.R. China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P.R. China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P.R. China
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20
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Liu Y, Zhang CY, Zhao SZ, Yan TY, Lu FL, Guan PP, Li X, Ding J, Wang X, Liu J, Liu BX. [Genetic Polymorphism of HPA 1-17 Alloantigen System in Heilongjiang Menggu Population]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2017; 25:1203-1207. [PMID: 28823293 DOI: 10.7534/j.issn.1009-2137.2017.04.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To explore the polymorphisms of the human platelet antigen (HPA) gene of Han and Menggu population of Heilongjiang province in China, to determine platelet antigen system with clinical significance by judging the rate of incompatibility of HPA, as well as to establish a database of donors HPA including the Han nationality and the minority nationality. METHODS The samples of unrelated healthy Menggu population (100 cases) people were selected from Heilongjiang province in China, and 123 cases in healthy Han population in Heilongjiang as control were collected. The technique of PCR-sequence specific primers (PCR-SSP) was used for genotyping of 34 alleles in HPA1-17 gene. The gene frequency and genotype frequency were separately calculated, and the allele frequency distribution in Menggu population was compared with the results from Han population. RESULTS In the Han population, monomorphic HPA-4,HPA-7-14,HPA-16, 17 were found in the samples, none of HPA-b was found in these samples. For HPA-1, 2, 4, 5 and 6, aa homozygosity was predominant. In the Menggu population, monomorphic HPA 1, HPA 5, 6, HPA 7-14, HPA 16,17 were found in the samples, none of HPA-b was found in these samples. For HPA 2, 4 aa homozygosity was predominant. HPA-3, 15 had the greatest heterozygosity in 2 population. HPA-1a and HPA-3a frequency of Menggu population were significantly different from that of Han population in Heilongjiang. CONCLUSION Distribution of the allele polymorphism of HPA 1-17 in Heilongjiang Han population is similar to that in Menggu population, and it shows its own characteristics. When the local HPA genotyped database of platelet donors in Heilongjiang is established, the count of Menggu donor should be increased.
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Affiliation(s)
- Ying Liu
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Chun-Yan Zhang
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Su-Zhen Zhao
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Ting-Yu Yan
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Feng-Liang Lu
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Pei-Pei Guan
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Xin Li
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Juan Ding
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Xin Wang
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China
| | - Jie Liu
- Institute of Blood Transfusion, Harbin Blood Center, Harbin 150056, Heilongjiang Province, China. E-mail:
| | - Bing-Xian Liu
- Department of Laboratory Medicine, Mudanjiang blood Center, Mudanjiang 157011, Heilongjiang Province, China. E-mail: mdjlbx@ 126.com
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Guo JW, Guan PP, Ding WY, Wang SL, Huang XS, Wang ZY, Wang P. Erythrocyte membrane-encapsulated celecoxib improves the cognitive decline of Alzheimer's disease by concurrently inducing neurogenesis and reducing apoptosis in APP/PS1 transgenic mice. Biomaterials 2017; 145:106-127. [PMID: 28865290 DOI: 10.1016/j.biomaterials.2017.07.023] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/11/2017] [Accepted: 07/12/2017] [Indexed: 12/16/2022]
Abstract
Alzheimer's disease (AD) is characterized by the loss of neurogenesis and excessive induction of apoptosis. The induction of neurogenesis and inhibition of apoptosis may be a promising therapeutic approach to combating the disease. Celecoxib (CB), a cyclooxygenase-2 specific inhibitor, could offer neuroprotection. Specifically, the CB-encapsulated erythrocyte membranes (CB-RBCMs) sustained the release of CB over a period of 72 h in vitro and exhibited high brain biodistribution efficiency following intranasal administration, which resulted in the clearance of aggregated β-amyloid proteins (Aβ) in neurons. The high accumulation of the CB-RBCMs in neurons resulted in a decrease in the neurotoxicity of CB and an increase in the migratory activity of neurons, and alleviated cognitive decline in APP/PS1 transgenic (Tg) mice. Indeed, COX-2 metabolic products including prostaglandin E2 (PGE2) and PGD2, PGE2 induced neurogenesis by enhancing the expression of SOD2 and 14-3-3ζ, and PGD2 stimulated apoptosis by increasing the expression of BIK and decreasing the expression of ARRB1. To this end, the CB-RBCMs achieved better effects on concurrently increasing neurogenesis and decreasing apoptosis than the phospholipid membrane-encapsulated CB liposomes (CB-PSPD-LPs), which are critical for the development and progression of AD. Therefore, CB-RBCMs provide a rational design to treat AD by promoting the self-repairing capacity of the brain.
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Affiliation(s)
- Jing-Wen Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Wei-Yan Ding
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Si-Ling Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning Province, 110016, PR China
| | - Xue-Shi Huang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, PR China.
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, PR China.
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22
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Wang P, Yu X, Guan PP, Guo JW, Wang Y, Zhang Y, Zhao H, Wang ZY. Magnesium ion influx reduces neuroinflammation in Aβ precursor protein/Presenilin 1 transgenic mice by suppressing the expression of interleukin-1β. Cell Mol Immunol 2015; 14:451-464. [PMID: 26549801 DOI: 10.1038/cmi.2015.93] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 10/02/2015] [Accepted: 10/02/2015] [Indexed: 12/22/2022] Open
Abstract
Alzheimer's disease (AD) has been associated with magnesium ion (Mg2+) deficits and interleukin-1β (IL-1β) elevations in the serum or brains of AD patients. However, the mechanisms regulating IL-1β expression during Mg2+ dyshomeostasis in AD remain unknown. We herein studied the mechanism of IL-1β reduction using a recently developed compound, magnesium-L-threonate (MgT). Using human glioblastoma A172 and mouse brain D1A glial cells as an in vitro model system, we delineated the signaling pathways by which MgT suppressed the expression of IL-1β in glial cells. In detail, we found that MgT incubation stimulated the activity of extracellular signal-regulated protein kinases 1 and 2 (ERK1/2) and peroxisome proliferator-activated receptor gamma (PPARγ) signaling pathways by phosphorylation, which resulted in IL-1β suppression. Simultaneous inhibition of the phosphorylation of ERK1/2 and PPARγ induced IL-1β upregulation in MgT-stimulated glial cells. In accordance with our in vitro data, the intracerebroventricular (i.c.v) injection of MgT into the ventricles of APP/PS1 transgenic mice and treatment of Aβ precursor protein (APP)/PS1 brain slices suppressed the mRNA and protein expression of IL-1β. These in vivo observations were further supported by the oral administration of MgT for 5 months. Importantly, Mg2+ influx into the ventricles of the mice blocked the effects of IL-1β or amyloid β-protein oligomers in the cerebrospinal fluid. This reduced the stimulation of IL-1β expression in the cerebral cortex of APP/PS1 transgenic mice, which potentially contributed to the inhibition of neuroinflammation.
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Affiliation(s)
- Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Xin Yu
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Jing-Wen Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Yue Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Yan Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Hang Zhao
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China
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23
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Yu X, Guan PP, Guo JW, Wang Y, Cao LL, Xu GB, Konstantopoulos K, Wang ZY, Wang P. By suppressing the expression of anterior pharynx-defective-1α and -1β and inhibiting the aggregation of β-amyloid protein, magnesium ions inhibit the cognitive decline of amyloid precursor protein/presenilin 1 transgenic mice. FASEB J 2015; 29:5044-58. [PMID: 26293690 DOI: 10.1096/fj.15-275578] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 08/13/2015] [Indexed: 01/19/2023]
Abstract
Alzheimer's disease (AD) is associated with a magnesium ion (Mg(2+)) deficit in the serum or brain. However, the mechanisms regulating the roles of Mg(2+) in the pathologic condition of AD remain unknown. We studied whether brain Mg(2+) can decrease β-amyloid (Aβ) deposition and ameliorate the cognitive decline in a model of AD, the APPswe/PS1DE9 transgenic (Tg) mouse. We used a recently developed compound, magnesium-L-threonate (MgT), for a treatment that resulted in enhanced clearance of Aβ in an anterior pharynx-defective (APH)-1α/-1β-dependent manner. To further explore how MgT treatment inhibits cognitive decline in APP/PS1 Tg mice, the critical molecules for amyloid precursor protein (APP) cleavage and signaling pathways were investigated. In neurons, ERK1/2 and PPARγ signaling pathways were activated by MgT treatment, which in turn suppressed (by >80%) the expression of APH-1α/-1β, which is responsible for the deposition of Aβ and potentially contributes to the memory deficit that occurs in AD. More important, Aβ oligomers in the cerebrospinal fluid (CSF) further promoted the expression of APH-1α/-1β (by >2.5-fold), which enhances the γ-cleavage of APP and Aβ deposition during AD progression. These findings provide new insights into the mechanisms of AD progression and are instrumental for developing better strategies to combat the disease.
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Affiliation(s)
- Xin Yu
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Pei-Pei Guan
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Jing-Wen Guo
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Yue Wang
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Long-Long Cao
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Guo-Biao Xu
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Konstantinos Konstantopoulos
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Zhan-You Wang
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Pu Wang
- *College of Life and Health Sciences, Northeastern University, Shenyang, China; and Department of Chemical and Biomolecular Engineering, Department of Biomedical Engineering, Johns Hopkins Institute for NanoBioTechnology, Johns Hopkins Physical Sciences-Oncology Center, and Center of Cancer Nanotechnology Excellence, The Johns Hopkins University, Baltimore, Maryland, USA
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Guan PP, Guo JW, Yu X, Wang Y, Wang T, Konstantopoulos K, Wang ZY, Wang P. The role of cyclooxygenase-2, interleukin-1β and fibroblast growth factor-2 in the activation of matrix metalloproteinase-1 in sheared-chondrocytes and articular cartilage. Sci Rep 2015; 5:10412. [PMID: 25992485 PMCID: PMC4438667 DOI: 10.1038/srep10412] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 04/13/2015] [Indexed: 12/13/2022] Open
Abstract
MMP-1 expression is detected in fluid shear stress (20 dyn/cm2)-activated and osteoarthritic human chondrocytes, however, the precise mechanisms underlying shear-induced MMP-1 synthesis remain unknown. Using primary chondrocytes and T/C-28a2 chondrocytic cells as model systems, we report that prolonged application of high fluid shear to human chondrocytes induced the synthesis of cyclooxygenase-2 (COX-2), interleukin-1β (IL-1β) and fibroblast growth factor-2 (FGF-2), which led to a marked increase in MMP-1 expression. IL-1β, COX-2-dependent PGE2 activated the PI3-K/AKT and p38 signaling pathways, which were in turn responsible for MMP-1 synthesis via NF-κB- and c-Jun-transactivating pathways. Prolonged shear stress exposure (>12 h) induced 15-Deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) synthesis. Although 15d-PGJ2 suppressed PI3-K/AKT and p38 signaling pathways, it stimulated MMP-1 expression via activating heme oxygenase 1 (HO-1). The critical role of COX-2 in regulating MMP-1 expression in articular cartilage in vivo was demonstrated using COX-2+/− transgenic mice in the absence or presence of rofecoxib oral administration. These findings provide novel insights for developing therapeutic strategies to combat OA.
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Affiliation(s)
- Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China, 110819
| | - Jing-Wen Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China, 110819
| | - Xin Yu
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China, 110819
| | - Yue Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China, 110819
| | - Tao Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China, 110819
| | - Konstantinos Konstantopoulos
- 1] Department of Chemical and Biomolecular Engineering [2] Johns Hopkins Institute for NanoBioTechnology [3] Johns Hopkins Physical Sciences-Oncology Center [4] Center of Cancer Nanotechonology Excellence, The Johns Hopkins University, Baltimore, Maryland, United States of America, 21218
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China, 110819
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, P. R. China, 110819
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25
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Wang P, Guan PP, Wang T, Yu X, Guo JJ, Konstantopoulos K, Wang ZY. Interleukin-1β and cyclic AMP mediate the invasion of sheared chondrosarcoma cells via a matrix metalloproteinase-1-dependent mechanism. Biochim Biophys Acta 2014; 1843:923-33. [PMID: 24472657 DOI: 10.1016/j.bbamcr.2014.01.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Revised: 12/15/2013] [Accepted: 01/16/2014] [Indexed: 11/26/2022]
Abstract
Matrix metalloproteinase-1 (MMP-1) is a potential biomarker for chondrosarcoma that is overexpressed at the invading edges of articular cartilage, and its expression correlates with poor survival rates. However, the molecular mechanisms of MMP-1 regulation and its potential contribution to chondrosarcoma cell invasion have yet to be elucidated, especially in shear-activated cells. Using molecular biology tools and an in vitro fluid shear model, we report that shear stress upregulates cyclic AMP (cAMP) and interleukin-1β (IL-1β) release, which in turn promotes the invasion of chondrosarcoma cells via the induction of MMP-1 in a phosphoinositide 3-kinase (PI3-K)- and ERK1/2-dependent manner. Activated PI3-K and ERK1/2 signaling pathways phosphorylate c-Jun, which in turn transactivates MMP-1 in human chondrosarcoma cells. Collectively, fluid shear stress upregulates matrix MMP-1 expression, which is responsible for the enhanced invasion of human chondrosarcoma cells.
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Affiliation(s)
- Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China; Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, USA
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China; Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, USA
| | - Tao Wang
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Xin Yu
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Jian-Jun Guo
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Konstantinos Konstantopoulos
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, USA; Johns Hopkins Institute for NanoBio Technology, The Johns Hopkins University, Baltimore, MD, USA; Johns Hopkins Physical Sciences-Oncology Center, The Johns Hopkins University, Baltimore, MD, USA; Center of Cancer Nanotechonology Excellence, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China.
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Wang P, Guan PP, Guo C, Zhu F, Konstantopoulos K, Wang ZY. Fluid shear stress-induced osteoarthritis: roles of cyclooxygenase-2 and its metabolic products in inducing the expression of proinflammatory cytokines and matrix metalloproteinases. FASEB J 2013; 27:4664-77. [PMID: 23964078 DOI: 10.1096/fj.13-234542] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The mechanical overloading of cartilage is involved in the pathophysiology of osteoarthritis (OA) by both biochemical and mechanical pathways. The application of fluid shear stress to chondrocytes recapitulates the earmarks of OA, as evidenced by the release of proinflammatory cytokines (PICs), matrix metalloproteinases (MMPs), and apoptotic factors. Dysregulations or mutations in these genes might directly cause OA in addition to determining the stage at which OA becomes apparent, the joint sites involved, and the severity of the disease and how rapidly it progresses. However, the underlying mechanisms remain unknown. In this review, we propose that the dysregulation of cyclooxygenase-2 (COX-2) is associated with fluid shear stress-induced OA via its metabolic products at different stages of the disease. Indeed, high fluid shear stress rapidly induces the production of PICs and MMPs via COX-2-derived prostaglandin (PG)E2 at the early stage of OA. In contrast, prolonged shear exposure (>12 h) aggravates the condition by concurrently up-regulating the expression of proapoptotic genes and down-regulating the expression of antiapoptotic genes in a 15-deoxy-Δ (12,14)-prostaglandin J2 (15d-PGJ2)-dependent manner at the late stage of disease. These observations may help to resolve long-standing questions in OA progression and provide insight for development of strategies to treat and combat OA.
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Affiliation(s)
- Pu Wang
- 1Z.-Y.W., College of Life and Health Sciences, Northeastern University, Shenyang, 110004, P. R. China.
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