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Ma N, Li R, You S, Zhang DJ. Fermentation enrichment, structural characterization and immunostimulatory effects of β-glucan from Quinoa. Int J Biol Macromol 2024; 267:131162. [PMID: 38574931 DOI: 10.1016/j.ijbiomac.2024.131162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/06/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
We developed an efficient mixed-strain co-fermentation method to increase the yield of quinoa β-glucan (Q+). Using a 1:1 mass ratio of highly active dry yeast and Streptococcus thermophilus, solid-to-liquid ratio of 1:12 (g/mL), inoculum size of 3.8 % (mass fraction), fermentation at 32 °C for 27 h, we achieved the highest β-glucan yield of (11.13 ± 0.80)%, representing remarkable 100.18 % increase in yield compared to quinoa β-glucan(Q-) extracted using hot water. The structure of Q+ and Q- were confirmed through Fourier Transform Infrared (FTIR) and Nuclear Magnetic Resonance (NMR) spectroscopies. Q+ contained 41.66 % β-glucan, 3.93 % protein, 2.12 % uronic acid; Q- contained 37.21 % β-glucan, 11.49 % protein, and 1.73 % uronic acid. The average molecular weight of Q+(75.37 kDa) was lower than that of Q- (94.47 kDa). Both Q+ and Q- promote RAW264.7 cell proliferation without displaying toxicity. They stimulate RAW264.7 cells through the NF-κB and MAPK signaling pathways, primarily inducing NO and pro-inflammatory cytokines by upregulating CD40 expression. Notably, Q+ exhibited stronger immunostimulatory activity compared to Q-. In summary, the fermentation enrichment method yields higher content of quinoa β-glucan with increased purity and stronger immunostimulatory properties. Further study of its bioimmunological activity and structure-activity relationship may contribute to the development of new immunostimulants.
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Affiliation(s)
- Nan Ma
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; National Coarse Cereals Engineering Research Center, Daqing 163319, PR China
| | - Rong Li
- Natural product research center, Korea Institute of Science and Technology (KIST), Gangneung 25451, Republic of Korea
| | - SangGuan You
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, 120 Gangneung, Gangwon 210-702, Republic of Korea; East Coast Research Institute of Life Science, Gangneung-Wonju National University, 120 Gangneung, Gangwon 210-702, Republic of Korea.
| | - Dong-Jie Zhang
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; National Coarse Cereals Engineering Research Center, Daqing 163319, PR China.
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2
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Zhang L, Xue Y, Yuan C, Du X, Wang X, Guo L, Li B. Decreased SIRT1 mRNA expression in peripheral blood mononuclear cells from patients with neuromyelitis optica spectrum disorders. Acta Neurol Belg 2023; 123:2287-2294. [PMID: 37294424 DOI: 10.1007/s13760-023-02300-3] [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: 02/18/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023]
Abstract
OBJECTIVE Sirtuin (SIRT)1, as a molecular link between immunity and metabolic pathways, is a key immune response regulator. The significance of SIRT1 in peripheral blood mononuclear cells (PBMCs) of neuromyelitis optica spectrum disorder (NMOSD) has not been investigated. Here, we aimed to evaluate the SIRT1 mRNA level in PBMCs of patients with NMOSD and its clinical relevance and explore the potential mechanism of SIRT1 action. METHODS A total of 65 patients with NMOSD and 60 normal controls from North China were enrolled. Using real-time fluorescence quantitative-polymerase chain reaction, mRNA levels were detected in PBMCs, and protein levels were detected using western blotting. RESULTS Compared to the healthy controls and chronic-phase patients with NMOSD, SIRT1 mRNA and protein levels in PBMCs of NMOSD patients with acute attack were significantly downregulated (p < 0.0001). ∆EDSS scores (EDSS scores in the acute phase-EDSS scores before the recent attack) were higher in NMOSD patients with low SIRT1 mRNA level than in patients with high SIRT1 expression (p = 0.042). SIRT1 mRNA level in patients with acute-phase NMSOD was positively correlated with lymphocyte and monocyte counts and negatively correlated with neutrophil counts and the neutrophil-to-lymphocyte ratio. Furthermore, the transcription factor FOXP3 mRNA level was significantly positively correlated with the SIRT1 mRNA level in PBMCs of patients with acute-phase NMOSD. CONCLUSIONS Our study indicated that SIRT1 mRNA expression was downregulated in the PBMCs of patients with acute-phase NMOSD, and its level was correlated with the clinical parameters of the patients, suggesting a potential role of SIRT1 in NMOSD.
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Affiliation(s)
- Lu Zhang
- Department of Neurology, The Second Hospital of Hebei Medical University, No. 215, Hepingxi Road, Shijiazhuang, 050000, China
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, China
| | - Yumei Xue
- Department of Neurology, The Second Hospital of Hebei Medical University, No. 215, Hepingxi Road, Shijiazhuang, 050000, China
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, China
- Department of Pharmacy, Shijiazhuang People's Hospital, Shijiazhuang, China
| | - Congcong Yuan
- Department of Neurology, The Second Hospital of Hebei Medical University, No. 215, Hepingxi Road, Shijiazhuang, 050000, China
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, China
- Department of Neurology, Baoding First Central Hospital, Baoding, China
| | - Xiaochen Du
- Department of Neurology, The Second Hospital of Hebei Medical University, No. 215, Hepingxi Road, Shijiazhuang, 050000, China
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, China
| | - Xuan Wang
- Department of Neurology, The Second Hospital of Hebei Medical University, No. 215, Hepingxi Road, Shijiazhuang, 050000, China
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, China
| | - Li Guo
- Department of Neurology, The Second Hospital of Hebei Medical University, No. 215, Hepingxi Road, Shijiazhuang, 050000, China.
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, China.
| | - Bin Li
- Department of Neurology, The Second Hospital of Hebei Medical University, No. 215, Hepingxi Road, Shijiazhuang, 050000, China.
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, China.
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Chen H, Peng Y, Wang L, Wang X. Sevoflurane attenuates cognitive dysfunction and NLRP3-dependent caspase-1/11-GSDMD pathway-mediated pyroptosis in the hippocampus via upregulation of SIRT1 in a sepsis model. Arch Physiol Biochem 2022; 128:1413-1420. [PMID: 32538180 DOI: 10.1080/13813455.2020.1773860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Septic encephalopathy (SE) is a devastating consequence of sepsis, a hyper-triggered host response against infectious challenge, which ultimately leads to brain damage. The present study examined whether sevoflurane (SVF), a volatile anaesthetic, can counteract the perturbation of homeostasis in a caecal ligation and puncture (CLP)-induced mouse model of SE. SVF enhances neurocognition in terms of spatial memory improvement via counter-regulation of activated oxidative-inflammatory stress and pyroptotic processes in SE. Further, the beneficial effects of SVF against SE are mediated by activation of silent information regulator 1 (SIRT1)-mediated reduction of reactive oxygen species (ROS) level, regulation of thioredoxin (TXN) and thioredoxin interacting protein (TIP) levels, reduction of inflammatory-pyroptotic signalling (NLRP3, caspase 1/11, GSDMD, TLR4 and TRIF) proteins, as well as a reduction of inflammatory cytokine (IL-1β and IL-18) levels. These findings suggest that SVF may have therapeutic potential for the treatment of SE and associated cognitive malfunction.
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Affiliation(s)
- Hao Chen
- Department of Anesthesiology, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yi Peng
- Department of Anesthesiology, Shijiazhuang First Hospital, Shijiazhuang, China
| | - Li Wang
- Department of Anesthesiology, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xin Wang
- Department of Anesthesiology, The First Hospital of Hebei Medical University, Shijiazhuang, China
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Huang C, Jiang S, Gao S, Wang Y, Cai X, Fang J, Yan T, Craig Wan C, Cai Y. Sirtuins: Research advances on the therapeutic role in acute kidney injury. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 101:154122. [PMID: 35490494 DOI: 10.1016/j.phymed.2022.154122] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/28/2022] [Accepted: 04/17/2022] [Indexed: 05/28/2023]
Abstract
BACKGROUND Acute kidney injury (AKI), a common multidisciplinary diagnostic clinical critical illness, eventually causes end-stage renal disease (ESRD). Although many clinical measures have been taken to prevent or treat AKI, high morbidity and death rates were recorded. Therefore, in-depth pathogenesis study and search for new therapeutic targets are in demand. Interestingly, the suirtuins family showed a significant protective effect in AKI. Sirtuins (SIRT1-7) is a family of seven proteins with NAD+-dependent type III histone deacetylase activity. Sirtuins family members were involved by AKI, and regulation of sirtuins activities significantly improved AKI-induced renal injury. Therefore, the therapeutic role and molecular mechanisms of the sirtuins family in AKI has important research implications for clinical applications or basic research. PURPOSE This review summarizes recent advances in the roles and functions of the sirtuins family, discusses their therapeutic effects on AKI and related molecular mechanisms, and the mechanisms of action of small molecule specific activators or inhibitors sirtuins in the prevention and treatment of AKI were discussed. METHODS The data in this review were retrieved from various scientific databases (PubMed, Google scholar, Science Direct, and Web of Science), till December 2021. The keywords were used as follows: "Sirtuins", "Acute kidney injury", "AKI", "Sirtuins modulators" and "Histone deacetylation". The retrieved data followed PRISMA criteria (preferred reporting items for systematic review). RESULTS Growing evidence indicates that members of the sirtuins family regulate the development and progression of different renal diseases, including AKI, through anti-inflammation, antioxidation, anti-apoptotic, and maintenance of mitochondrial homeostasis. The molecular mechanism of Sirtuins family on AKI mainly regulated NF-κB, JNK/ERK, and AMPK/mTOR signaling pathways, upregulated the expression of PGC-1α, HO-1, NRF2, Bcl-2, OPA1, and AMPK, and downregulated the expression of NRLP3, IL-1β, TNF-α, IL-6, ROS, MFF, Drp1, Bax, ERK, and mTOR. In addition, the active ingredients of herbs (resveratrol, thujaplicins, huperzine, and curcumin) could activate the activity of SIRT1 or SIRT3, thereby improving AKI. Meanwhile, the synthetic Sirtuins inhibitor (AK-1) inhibited SIRT2 activity, thus alleviating AKI. In the future, more specific modulators will remain needed to enhance the clinical therapeutic role of the Sirtuins family in AKI. CONCLUSION The sirtuins family is a promising type III histone deacetylase for AKI treatment. This review will provide insight into sirtuins family's therapeutic role in AKI and promote the clinical use of sirtuins modulators in AKI.
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Affiliation(s)
- Chaoming Huang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, PR China
| | - Shisheng Jiang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, PR China
| | - Shuhan Gao
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, PR China
| | - Yuxin Wang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, PR China
| | - Xiaoting Cai
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, PR China
| | - Junyan Fang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, PR China
| | - Tingdong Yan
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, PR China.
| | - Chunpeng Craig Wan
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, PR China.
| | - Yi Cai
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, PR China.
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Shelke V, Kale A, Anders HJ, Gaikwad AB. Epigenetic regulation of Toll-like receptors 2 and 4 in kidney disease. J Mol Med (Berl) 2022; 100:1017-1026. [PMID: 35704060 DOI: 10.1007/s00109-022-02218-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/25/2022] [Accepted: 05/30/2022] [Indexed: 11/25/2022]
Abstract
Kidney disease affects more than 10% of the worldwide population and causes significant morbidity and mortality. Epigenetic mechanisms such as DNA methylation, histone modifications, and non-coding RNAs (ncRNAs) play a pivotal role in the progression of kidney disease. These epigenetic mechanisms are reversible and majorly involved in regulating gene expression of inflammatory, fibrotic, and apoptotic proteins. Emerging data suggest that the Toll-like receptor 2 and Toll-like receptor 4 (TLR2 and TLR4) are expressed by almost all types of kidney cells and known for promoting inflammation by recognizing damage-associated molecular proteins (DAMPs). Epigenetic mechanisms regulate TLR2 and TLR4 signaling in various forms of kidney disease where different histone modifications promote the transcription of the TLR2 and TLR4 gene and its ligand high mobility group box protein 1 (HMGB1). Moreover, numerous long non-coding RNAs (LncRNAs) and microRNAs (miRNAs) modulate TLR2 and TLR4 signaling in kidney disease. However, the precise mechanisms behind this regulation are still enigmatic. Studying the epigenetic mechanisms involved in the regulation of TLR2 and TLR4 signaling in the development of kidney disease may help in understanding and finding novel therapeutic strategies. This review discusses the intricate relationship of epigenetic mechanisms with TLR2 and TLR4 in different forms of kidney diseases. In addition, we discuss the different lncRNAs and miRNAs that regulate TLR2 and TLR4 as potential therapeutic targets in kidney disease.
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Affiliation(s)
- Vishwadeep Shelke
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, 333 031, Rajasthan, India
| | - Ajinath Kale
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, 333 031, Rajasthan, India
| | - Hans-Joachim Anders
- Division of Nephrology, Department of Internal Medicine IV, University Hospital of the Ludwig Maximilians University Munich, 80336, Munich, Germany
| | - Anil Bhanudas Gaikwad
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, 333 031, Rajasthan, India.
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Li N, Huang C, Chen W, Li Z, Hu G, Li G, Liu P, Hu R, Zhuang Y, Luo J, Gao X, Guo X. Nephropathogenic Infectious Bronchitis Virus Mediates Kidney Injury in Chickens via the TLR7/NF-κB Signaling Axis. Front Cell Infect Microbiol 2022; 12:865283. [PMID: 35402297 PMCID: PMC8983847 DOI: 10.3389/fcimb.2022.865283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 02/17/2022] [Indexed: 01/02/2023] Open
Abstract
Nephropathogenic infectious bronchitis virus (NIBV) is one of the most important viral pathogens in the world poultry industry. Here, we used RT–qPCR, WB and immunofluorescence to explore the interaction between NIBV and the host innate immune system of the kidney. Multiple virions were found in the kidney tissues of the disease group under electron microscopy, and pathological changes such as structural damage of renal tubules and bleeding were observed by HE staining. In addition, we found that the mRNA levels of TLR7, TRAF6, and IKKβ were upregulated after NIBV infection. IRF7 mRNA levels decreased significantly at 5 dpi and increased significantly at 11 to 18 dpi. The NF-κB P65 mRNA level increased significantly at 5 to 18 dpi and decreased at 28 dpi. However, NIBV infection-induced NF-κB P65 protein levels were downregulated at multiple time points. Moreover, we demonstrated that the cytokine (IFN-γ, IL-8, and IL-6) mRNA and protein expression levels were increased significantly at multiple time points after NIBV infection. Furthermore, immunofluorescence analysis showed that NF-κB P65 and IFN-γ were mainly located in the nuclear or perinuclear region. The positive signal intensity of NF-κB P65 was significantly lower than that of the normal group at 1 to 5 dpi, and there was no significant change in the subsequent time period. The positive signal intensity of IFN-γ decreased significantly at 5 dpi, and increased significantly at 11 to 28 dpi. In conclusion, we found that NIBV promoted cytokine release through the TLR7/NF-κB signaling axis, thus causing kidney injury.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Xiaona Gao
- *Correspondence: Xiaoquan Guo, ; Xiaona Gao,
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Cao RA, Palanisamy S, Ma N, Talapphet N, Zhang J, Wang C, You S. Extraction, structural characterization, and immunostimulatory activity of soluble non-starch polysaccharides of finger millet. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.08.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Lu S, Zhou S, Chen J, Zheng J, Ren J, Qi P, Zhu Z, Li Z. Quercetin Nanoparticle Ameliorates Lipopolysaccharide-Triggered Renal Inflammatory Impairment by Regulation of Sirt1/NF-KB Pathway. J Biomed Nanotechnol 2021; 17:230-241. [PMID: 33785094 DOI: 10.1166/jbn.2021.3031] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
As a conventional complication of sepsis, acute kidney injury (AKI) is characterized by high incidence and mortality. Effective management methods are still lacking. Quercetin belongs to a kind of flavonoids that exerts many functions, for example anti-inflammation and anti-fibrosis. However, its function in sepsis AKI is uncertain. Our study therefore set out to assess the function of quercetin in AKI mice model induced by lipopolysaccharide (LPS) and human proximal tubular cells (HK-2), including the potential mechanisms. Quercetin was loaded onto a biodegradable polymer carrier (nanoparticle) to enhance its bioavailability. The data showed that quercetin administration strikingly improved renal dysfunction and ameliorated tubular injury caused by LPS in mice. In mice model and in cultured cells, quercetin pretreatment obviously restrained LPS-triggered cell apoptosis and inflammation, including generation of various cytokines. Moreover, the results from mice model and cell model showed that quercetin could diminish IκBα and p65 phosphorylation after LPS treatment. The most significant observation of this study was that quercetin elevated the expression of Sirt1. Transfection of Sirt1 specific shRNA mitigated the suppression of quercetin on cell apoptosis, inflammation and of NF-κB activation triggered by LPS. Therefore, these sequels indicate that quercetin protects against sepsis-associated AKI by upregulation Sirt1 expression through quenching NF-κB activation and may be an encouraging therapeutic agent for patients with sepsis-associated AKI.
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Affiliation(s)
- Shan Lu
- Department of Emergency, The First Affiliated Hospital ofZhengzhou University, Zhengzhou 450052, PR China
| | - Shuai Zhou
- Department of Cardiology, The First Affiliated Hospital ofZhengzhou University, Zhengzhou 450052, PR China
| | - Juwu Chen
- Department of Emergency, The First Affiliated Hospital ofZhengzhou University, Zhengzhou 450052, PR China
| | - Jian Zheng
- Department of Thyroid Surgery, The First Affiliated Hospital ofZhengzhou University, Zhengzhou 450052, PR China
| | - Jia Ren
- Department of Emergency, The First Affiliated Hospital ofZhengzhou University, Zhengzhou 450052, PR China
| | - Peiyi Qi
- Department of Emergency, The First Affiliated Hospital ofZhengzhou University, Zhengzhou 450052, PR China
| | - Zhiqiang Zhu
- Department of Emergency, The First Affiliated Hospital ofZhengzhou University, Zhengzhou 450052, PR China
| | - Zhenzhen Li
- Medical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, PR China
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Activators of SIRT1 in the kidney and protective effects of SIRT1 during acute kidney injury (AKI) (effect of SIRT1 activators on acute kidney injury). Clin Exp Nephrol 2021; 25:807-821. [PMID: 33779856 DOI: 10.1007/s10157-021-02057-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/17/2021] [Indexed: 12/18/2022]
Abstract
Acute kidney injury (AKI) is a complex disorder and a clinical condition characterized by acute reduction in renal function. If AKI is not treated, it can lead to chronic kidney disease, which is associated with a high risk of death. SIRT1 (silent information regulator 1) is an NAD-dependent deacetylase. This enzyme is responsible for the processes of DNA repair or recombination, chromosomal stability, and gene transcription. This enzyme also plays a protective role in many diseases, including AKI. In this study, we review the mechanisms that mediate the protective effects of SIRT1 on AKI, including SIRT1 activators.
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Liu N, Zeng L, Zhang YM, Pan W, Lai H. Astaxanthin alleviates pathological brain aging through the upregulation of hippocampal synaptic proteins. Neural Regen Res 2021; 16:1062-1067. [PMID: 33269751 PMCID: PMC8224122 DOI: 10.4103/1673-5374.300460] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Oxidative stress is currently considered to be the main cause of brain aging. Astaxanthin can improve oxidative stress under multiple pathological conditions. It is therefore hypothesized that astaxanthin might have therapeutic effects on brain aging. To validate this hypothesis and investigate the underlying mechanisms, a mouse model of brain aging was established by injecting amyloid beta (Aβ)25–35 (5 μM, 3 μL/injection, six injections given every other day) into the right lateral ventricle. After 3 days of Aβ25–35 injections, the mouse models were intragastrically administered astaxanthin (0.1 mL/d, 10 mg/kg) for 30 successive days. Astaxanthin greatly reduced the latency to find the platform in the Morris water maze, increased the number of crossings of the target platform, and increased the expression of brain-derived neurotrophic factor, synaptophysin, sirtuin 1, and peroxisome proliferator-activated receptor-γ coactivator 1α. Intraperitoneal injection of the sirtuin 1 inhibitor nicotinamide (500 μM/d) for 7 successive days after astaxanthin intervention inhibited these phenomena. These findings suggest that astaxanthin can regulate the expression of synaptic proteins in mouse hippocampus through the sirtuin 1/peroxisome proliferator-activated receptor-γ coactivator 1α signaling pathway, which leads to improvements in the learning, cognitive, and memory abilities of mice. The study was approved by the Animal Ethics Committee, China Medical University, China (approval No. CMU2019294) on January 15, 2019.
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Affiliation(s)
- Ning Liu
- 1Department of Human Anatomy, College of Basic Medicine, China Medical University, Shenyang; Department of Radiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning Province, China
| | - Liang Zeng
- Department of Human Anatomy, College of Basic Medicine, Shenyang Medical College, Shenyang, Liaoning Province, China
| | - Yi-Ming Zhang
- Department of Human Anatomy, College of Basic Medicine, China Medical University, Shenyang, Liaoning Province, China
| | - Wang Pan
- Department of Neurobiology of Jinzhou Medical University, Jinzhou, Liaoning Province, China
| | - Hong Lai
- Department of Human Anatomy, College of Basic Medicine, China Medical University, Shenyang, Liaoning Province, China
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Rasha F, Mims BM, Castro-Piedras I, Barnes BJ, Grisham MB, Rahman RL, Pruitt K. The Versatility of Sirtuin-1 in Endocrinology and Immunology. Front Cell Dev Biol 2020; 8:589016. [PMID: 33330467 PMCID: PMC7717970 DOI: 10.3389/fcell.2020.589016] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/27/2020] [Indexed: 12/13/2022] Open
Abstract
Sirtuins belong to the class III family of NAD-dependent histone deacetylases (HDAC) and are involved in diverse physiological processes that range from regulation of metabolism and endocrine function to coordination of immunity and cellular responses to stress. Sirtuin-1 (SIRT1) is the most well-studied family member and has been shown to be critically involved in epigenetics, immunology, and endocrinology. The versatile roles of SIRT1 include regulation of energy sensing metabolic homeostasis, deacetylation of histone and non-histone proteins in numerous tissues, neuro-endocrine regulation via stimulation of hypothalamus-pituitary axes, synthesis and maintenance of reproductive hormones via steroidogenesis, maintenance of innate and adaptive immune system via regulation of T- and B-cell maturation, chronic inflammation and autoimmune diseases. Moreover, SIRT1 is an appealing target in various disease contexts due to the promise of pharmacological and/or natural modulators of SIRT1 activity within the context of endocrine and immune-related disease models. In this review we aim to provide a broad overview on the role of SIRT1 particularly within the context of endocrinology and immunology.
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Affiliation(s)
- Fahmida Rasha
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Brianyell McDaniel Mims
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Isabel Castro-Piedras
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Betsy J. Barnes
- Laboratory of Autoimmune and Cancer Research, Center for Autoimmune Musculoskeletal and Hematopoietic Disease, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
- Department of Molecular Medicine and Department of Pediatrics, Zucker School of Medicine at Hofstra-Northwell, Hempstead, NY, United States
| | - Matthew B. Grisham
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | | | - Kevin Pruitt
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
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CD40/CD40L Signaling as a Promising Therapeutic Target for the Treatment of Renal Disease. J Clin Med 2020; 9:jcm9113653. [PMID: 33202988 PMCID: PMC7697100 DOI: 10.3390/jcm9113653] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/06/2020] [Accepted: 11/11/2020] [Indexed: 02/07/2023] Open
Abstract
The cluster of differentiation 40 (CD40) is activated by the CD40 ligand (CD40L) in a variety of diverse cells types and regulates important processes associated with kidney disease. The CD40/CD40L signaling cascade has been comprehensively studied for its roles in immune functions, whereas the signaling axis involved in local kidney injury has only drawn attention in recent years. Clinical studies have revealed that circulating levels of soluble CD40L (sCD40L) are associated with renal function in the setting of kidney disease. Levels of the circulating CD40 receptor (sCD40), sCD40L, and local CD40 expression are tightly related to renal injury in different types of kidney disease. Additionally, various kidney cell types have been identified as non-professional antigen-presenting cells (APCs) that express CD40 on the cell membrane, which contributes to the interactions between immune cells and local kidney cells during the development of kidney injury. Although the potential for adverse CD40 signaling in kidney cells has been reported in several studies, a summary of those studies focusing on the role of CD40 signaling in the development of kidney disease is lacking. In this review, we describe the outcomes of recent studies and summarize the potential therapeutic methods for kidney disease which target CD40.
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Dual Effect of Soloxolone Methyl on LPS-Induced Inflammation In Vitro and In Vivo. Int J Mol Sci 2020; 21:ijms21217876. [PMID: 33114200 PMCID: PMC7660695 DOI: 10.3390/ijms21217876] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/15/2020] [Accepted: 10/22/2020] [Indexed: 12/25/2022] Open
Abstract
Plant-extracted triterpenoids belong to a class of bioactive compounds with pleotropic functions, including antioxidant, anti-cancer, and anti-inflammatory effects. In this work, we investigated the anti-inflammatory and anti-oxidative activities of a semisynthetic derivative of 18βH-glycyrrhetinic acid (18βH-GA), soloxolone methyl (methyl 2-cyano-3,12-dioxo-18βH-olean-9(11),1(2)-dien-30-oate, or SM) in vitro on lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages and in vivo in models of acute inflammation: LPS-induced endotoxemia and carrageenan-induced peritonitis. SM used at non-cytotoxic concentrations was found to attenuate the production of reactive oxygen species and nitric oxide (II) and increase the level of reduced glutathione production by LPS-stimulated RAW264.7 cells. Moreover, SM strongly suppressed the phagocytic and migration activity of activated macrophages. These effects were found to be associated with the stimulation of heme oxigenase-1 (HO-1) expression, as well as with the inhibition of nuclear factor-κB (NF-κB) and Akt phosphorylation. Surprisingly, it was found that SM significantly enhanced LPS-induced expression of the pro-inflammatory cytokines interleukin-6 (IL-6), tumour necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) in RAW264.7 cells via activation of the c-Jun/Toll-like receptor 4 (TLR4) signaling axis. In vivo pre-exposure treatment with SM effectively inhibited the development of carrageenan-induced acute inflammation in the peritoneal cavity, but it did not improve LPS-induced inflammation in the endotoxemia model.
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Yang Y, Hu Y, Zhou Y, Liang T, Tang H, Ju H, Shi Q, Fang H. Lys694Arg polymorphism leads to blunted responses to LPS by interfering TLR4 with recruitment of MyD88. Innate Immun 2020; 27:483-492. [PMID: 32513051 PMCID: PMC8504268 DOI: 10.1177/1753425920927479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
TLR4 polymorphisms such as Asp299Gly and Thr399Ile related to Gram-negative sepsis have been reported to result in significantly blunted responsiveness to LPS. Our study group previously screened other TLR4 polymorphic variants by checking the NF-κB activation in comparison to wild type (WT) TLR4 in human embryonic kidney 293T cells. In this study, we found that the Lys694Arg (K694R) polymorphism reduced the activation of NF-κB, and the production of downstream inflammatory factors IL-1, TNF-α and IL-6, representing the K694R polymorphism, led to blunted responsiveness to LPS. Then, we examined the influence of the K694R polymorphism on total and cell-surface TLR4 expression by Western blotting and flow cytometry, respectively, but observed no differences between the K694R polymorphism and WT TLR4. We also used co-immunoprecipitation to determine the interaction of the K694R polymorphism and WT TLR4 with their co-receptor myeloid differentiation factor 2 (MD2) and their downstream signal adaptor MyD88. We found that K694R reduced the recruitment of MyD88 in TLR4 signalling but had no impact on the interaction with MD2.
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Affiliation(s)
- Yajie Yang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Yan Hu
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China
| | - Yile Zhou
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Tao Liang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Haihong Tang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Huihui Ju
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China
| | - Qiqing Shi
- Department of Anaesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, PR China
| | - Hao Fang
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China.,Department of Anaesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, PR China
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15
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Xia C, Cao X, Cui L, Liu H, Wang S, Chen T. Anti-aging effect of the combination of Bifidobacterium longum and B. animalis in a d-galactose-treated mice. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103938] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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16
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Wang L, Wang M, Dou H, Lin W, Zou L. Sirtuin 1 inhibits lipopolysaccharide-induced inflammation in chronic myelogenous leukemia k562 cells through interacting with the Toll-like receptor 4-nuclear factor κ B-reactive oxygen species signaling axis. Cancer Cell Int 2020; 20:73. [PMID: 32165863 PMCID: PMC7059700 DOI: 10.1186/s12935-020-1152-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/24/2020] [Indexed: 12/22/2022] Open
Abstract
Background Chronic myelogenous leukemia (CML) is a clonal myeloproliferative neoplasm resulting from BCR–ABL-transformed hematopoietic stem cells. Previous research has implicated multifunctional proinflammatory cytokines in CML development. It has been reported that Sirtuin 1 (SIRT1) as well as ADP-ribosyltransferase and deacetylase may influence CML cell viability and inflammation. Methods This study was directed toward exploring the SIRT1-involved in the mechanism of lipopolysaccharide (LPS)-triggered inflammation in CML k562 cells. Results In our study, the LPS-induced inflammation in k562 cells was reflected by increases in levels of diverse inflammatory cytokines, including interleukin (IL)-10, IL-1β, IL-6, interferon-γ, tumor necrosis factor (TNF)-α and TNF-β. LPS also decreased SIRT1 expression and nuclear location in k562 cells. Furthermore, SIRT1 overexpression inhibited the release of the above mentioned cytokines in LPS-treated cells. We also determined that LPS stimulation could activate Toll-like receptor 4 (TLR4), the nuclear factor κ B (NFκB) subunit, and p65 and produce reactive oxygen species (ROS) in k562 cells. Nevertheless, SIRT1 overexpression decreased TLR4 expression, thereby repressing the phosphorylation of the NFκB subunit and p65 and decreasing ROS production. Conclusions These findings suggest that SIRT1 is a latent therapeutic target for mitigating LPS-induced inflammation via the TLR4–NFκB–ROS signaling axis.
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Affiliation(s)
- Lei Wang
- Department of Hematology, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No. 639, Manufacturing Bureau Road, Shanghai, 200011 China
| | - Mingming Wang
- Department of Hematology, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No. 639, Manufacturing Bureau Road, Shanghai, 200011 China
| | - Hongju Dou
- Department of Hematology, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No. 639, Manufacturing Bureau Road, Shanghai, 200011 China
| | - Wenjie Lin
- Department of Hematology, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No. 639, Manufacturing Bureau Road, Shanghai, 200011 China
| | - Lifang Zou
- Department of Hematology, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No. 639, Manufacturing Bureau Road, Shanghai, 200011 China
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Wang J, Du Y, Deng J, Wang X, Long F, He J. MicroRNA-506 Is Involved in Regulation of the Occurrence of Lipopolysaccharides (LPS)-Induced Pulpitis by Sirtuin 1 (SIRT1). Med Sci Monit 2019; 25:10008-10015. [PMID: 31877121 PMCID: PMC6944165 DOI: 10.12659/msm.918172] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Toothache often occurs with pulpitis. Lipopolysaccharide (LPS) is produced by gram-negative bacteria, and its accumulation is related to clinical symptoms of pain. MicroRNAs (miRNAs) display anti-inflammatory potential due to their direct regulation of cellular protein expression, which can promote inflammatory changes in dental pulp tissues. However, the mechanism of LPS-induced pulpitis is still unclear. Material/Methods In this study, dental pulp stem cells (DPSCs) were separated and cultured from rat dental pulp tissues; then, LPS was administered to induce inflammation and activate the TLR4 pathway. Results It was found that miR-506 was upregulated following LPS treatment in DPSCs. The inhibition of miR-506 in LPS-treated DPSCs led to attenuated inflammation and deactivation of the TLR4 pathway. Furthermore, the bioinformatic analysis and dual-luciferase reporter gene assay indicated that miR-506 could target the 3′-UTR of sirtuin 1 (SIRT1). Additionally, SIRT1 decreased in LPS-treated DPSCs, and miR-506 transfection resulted in SIRT1 upregulation. SIRT1 overexpression showed a similar inhibitory effect as that of miR-506 downregulation on inflammation and TLR4 activation in DPSCs. Conclusions In brief, miR-506 can protect dental pulp in LPS-induced inflammation by inhibiting the SIRT1-mediated TLR4 pathway.
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Affiliation(s)
- Jun Wang
- Stomatological Center, Gansu Provincial Hospital, Lanzhou, Gansu, China (mainland)
| | - Yi Du
- Department of Nursing, The First Hospital of Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Junhong Deng
- Department of Stomatology, The Second People's Hospital of Lanzhou City, Lanzhou, Gansu, China (mainland)
| | - Xin Wang
- Departments of Health and Social Care, The Second People's Hospital of Lanzhou City, Lanzhou, Gansu, China (mainland)
| | - Fei Long
- Stomatological Center, Gansu Provincial Hospital, Lanzhou, Gansu, China (mainland)
| | - Jianmin He
- Stomatological Center, Gansu Provincial Hospital, Lanzhou, Gansu, China (mainland)
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Han S, Li Z, Han F, Jia Y, Qi L, Wu G, Cai W, Xu Y, Li C, Zhang W, Hu D. ROR alpha protects against LPS-induced inflammation by down-regulating SIRT1/NF-kappa B pathway. Arch Biochem Biophys 2019; 668:1-8. [PMID: 31071300 DOI: 10.1016/j.abb.2019.05.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/15/2019] [Accepted: 05/05/2019] [Indexed: 02/07/2023]
Abstract
Systemic inflammatory response syndrome (SIRS) is associated with excessive inflammatory response, however, the pathophysiology of inflammation is poorly understood. The retinoid-related orphan receptor α (RORα) is a key inflammatory regulator, but the mechanisms underlying its role remain unclear. The aim of this study was to investigate how RORα was involved in the regulation of inflammatory response. Here we put forward a hypothesis that RORα might negatively regulate inflammatory response by controlling silent information regulator Sirtuin 1 (SIRT1) expression. Stimulation of macrophages in vitro with LPS and LPS administration in vivo were used to explore the function of RORα and the relationship between RORα and SIRT1. We found that the level of RORα was suppressed in macrophages stimulated with LPS and overexpression or knockdown of RORα by transfection with lentivirus or siRNAs significantly decreased or increased, respectively, the pro-inflammatory cytokines IL-1β, TNF, IL-6 and MCP-1. Importantly, overexpression of RORα suppressed inflammation and alleviated LPS-induced organ injury in vivo. Further study showed that RORα could regulate SIRT1 expression and, consequently, affect deacetyation and nuclear translocation of nuclear factor-kappa B (NF-κB) subunit p65. Moreover, the activation of SIRT1 by its specific agonist, SR1720, could reduce the expression of proinflammatory cytokines in RORα knockdown macrophages stimulated with LPS. In conclusion, we demonstrated that RORα could alleviate LPS-induced inflammation and organ injury both in vivo and in vitro by blocking NF-κB p65 nuclear translocation and restricting acetylation of NF-κB p65 at lysine 310 via the regulation of SIRT1 expression. Targeting RORα might be a promising therapeutic strategy to regulate inflammatory disorders.
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Affiliation(s)
- Shichao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Zhenzhen Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Fu Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Yanhui Jia
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Lijun Qi
- Department of Anesthesiology, Heze Municipal Hospital, Heze, 274031, Shandong, China
| | - Gaofeng Wu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Weixia Cai
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Yongqiang Xu
- Department of Radiology, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Cong Li
- Department of Anesthesiology, Heze Municipal Hospital, Heze, 274031, Shandong, China
| | - Wanfu Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China.
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China.
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Hardeland R. Aging, Melatonin, and the Pro- and Anti-Inflammatory Networks. Int J Mol Sci 2019; 20:ijms20051223. [PMID: 30862067 PMCID: PMC6429360 DOI: 10.3390/ijms20051223] [Citation(s) in RCA: 181] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/05/2019] [Accepted: 03/07/2019] [Indexed: 12/17/2022] Open
Abstract
Aging and various age-related diseases are associated with reductions in melatonin secretion, proinflammatory changes in the immune system, a deteriorating circadian system, and reductions in sirtuin-1 (SIRT1) activity. In non-tumor cells, several effects of melatonin are abolished by inhibiting SIRT1, indicating mediation by SIRT1. Melatonin is, in addition to its circadian and antioxidant roles, an immune stimulatory agent. However, it can act as either a pro- or anti-inflammatory regulator in a context-dependent way. Melatonin can stimulate the release of proinflammatory cytokines and other mediators, but also, under different conditions, it can suppress inflammation-promoting processes such as NO release, activation of cyclooxygenase-2, inflammasome NLRP3, gasdermin D, toll-like receptor-4 and mTOR signaling, and cytokine release by SASP (senescence-associated secretory phenotype), and amyloid-β toxicity. It also activates processes in an anti-inflammatory network, in which SIRT1 activation, upregulation of Nrf2 and downregulation of NF-κB, and release of the anti-inflammatory cytokines IL-4 and IL-10 are involved. A perhaps crucial action may be the promotion of macrophage or microglia polarization in favor of the anti-inflammatory phenotype M2. In addition, many factors of the pro- and anti-inflammatory networks are subject to regulation by microRNAs that either target mRNAs of the respective factors or upregulate them by targeting mRNAs of their inhibitor proteins.
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Affiliation(s)
- Rüdiger Hardeland
- Johann Friedrich Blumenbach Institute of Zoology and Anthropology, University of Göttingen, 37073 Göttingen, Germany.
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20
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Velagapudi R, Lepiarz I, El-Bakoush A, Katola FO, Bhatia H, Fiebich BL, Olajide OA. Induction of Autophagy and Activation of SIRT-1 Deacetylation Mechanisms Mediate Neuroprotection by the Pomegranate Metabolite Urolithin A in BV2 Microglia and Differentiated 3D Human Neural Progenitor Cells. Mol Nutr Food Res 2019; 63:e1801237. [PMID: 30811877 DOI: 10.1002/mnfr.201801237] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/12/2019] [Indexed: 12/19/2022]
Abstract
SCOPE Urolithin A is an anti-inflammatory and neuroprotective gut-derived metabolite from ellagitannins and ellagic acid in pomegranate, berries, and nuts. The roles of SIRT-1 and autophagy in the neuroprotective activity of urolithin A are investigated. METHODS AND RESULTS Analyses of culture supernatants from lipopolysaccharide-stimulated BV2 microglia show that urolithin A (2.5-10 µm) produced significant reduction in the production of nitrite, tumor necrosis factor (TNF)-α and IL-6. The anti-inflammatory effect of the compound is reversed in the presence of sirtuin (SIRT)-1 and the autophagy inhibitors EX527 and chloroquine, respectively. Protein analyses reveal reduction in p65 and acetyl-p65 protein. Treatment of BV2 microglia with urolithin A results in increased SIRT-1 activity and nuclear protein, while induction of autophagy by the compound is demonstrated using autophagy fluorescent and autophagy LC3 HiBiT reporter assays. Viability assays reveal that urolithin A produces a neuroprotective effect in APPSwe-transfected ReNcell VM human neural cells, which is reversed in the presence of EX527 and chloroquine. Increase in both SIRT-1 and autophagic activities are also detected in these cells following treatment with urolithin A. CONCLUSIONS It has been proposed that SIRT-1 activation and induction of autophagy are involved in the neuroprotective activity of urolithin A in brain cells.
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Affiliation(s)
- Ravikanth Velagapudi
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom
| | - Izabela Lepiarz
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom
| | - Abdelmeneim El-Bakoush
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom
| | - Folashade O Katola
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom
| | - Harsharan Bhatia
- Neurochemistry and Neuroimmunology Research Group, Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Hauptstrasse 5, 79104, Freiburg, Germany
| | - Bernd L Fiebich
- Neurochemistry and Neuroimmunology Research Group, Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Hauptstrasse 5, 79104, Freiburg, Germany
| | - Olumayokun A Olajide
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom
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Zhang Y, Huo Y, He W, Liu S, Li H, Li L. Visfatin is regulated by interleukin‑6 and affected by the PPAR‑γ pathway in BeWo cells. Mol Med Rep 2018; 19:400-406. [PMID: 30483779 PMCID: PMC6297763 DOI: 10.3892/mmr.2018.9671] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 10/15/2018] [Indexed: 02/07/2023] Open
Abstract
Visfatin, an adipocytokine and cytosolic enzyme with nicotinamide phosphoribosyltransferase (Nampt) activity, is involved in the pathogenesis of numerous metabolic disorders. In addition, the nuclear receptor peroxisome proliferator-activated receptor-γ (PPAR-γ) serves important roles in anti-inflammatory reactions and regulates glucose and lipid metabolism. The aim of the present study was to investigate the effect of interleukin-6 (IL-6) on the expression and secretion of visfatin in BeWo cells, and to determine whether the PPAR-γ pathway is involved in the regulation of visfatin by IL-6. Therefore, BeWo cells were stimulated with serial concentrations of IL-6 or pioglitazone, and the expression levels of visfatin and PPAR-γ were determined by reverse transcription-quantitative polymerase chain reaction and western blotting. The results of the present study demonstrated that IL-6 downregulated the mRNA levels of visfatin and PPAR-γ, which were strongly associated. Activation of PPAR-γ by pioglitazone resulted in significantly increased expression of visfatin, which abrogated the inhibitory effect of IL-6 on visfatin in BeWo cells. Furthermore, treatment using pioglitazone alone increased the expression and secretion of the visfatin protein, compared with the control or IL-6 alone group. In summary, the findings of the present study suggested that IL-6 inhibited the expression of visfatin and PPAR-γ at the transcriptional level; in addition, activation of PPAR-γ upregulated visfatin at the mRNA and protein expression levels. Therefore, the PPAR-γ signaling pathway may be involved in the regulation of visfatin by IL-6 in BeWo cells. These results may provide novel insight into the roles of visfatin in trophoblastic cells. Furthermore, thiazolidinedione pioglitazone, by upregulating visfatin expression, may promote the energy metabolism of trophoblastic cells, maintain the function of the placenta and improve the outcome of pregnancy.
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Affiliation(s)
- Yanhong Zhang
- Department of Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Yan Huo
- Department of Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Wenhui He
- Department of Obstetrics, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Suxin Liu
- Department of Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Hongyan Li
- Department of Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Li Li
- Department of Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
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22
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Hardeland R. Melatonin and inflammation-Story of a double-edged blade. J Pineal Res 2018; 65:e12525. [PMID: 30242884 DOI: 10.1111/jpi.12525] [Citation(s) in RCA: 268] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 09/10/2018] [Accepted: 09/14/2018] [Indexed: 12/13/2022]
Abstract
Melatonin is an immune modulator that displays both pro- and anti-inflammatory properties. Proinflammatory actions, which are well documented by many studies in isolated cells or leukocyte-derived cell lines, can be assumed to enhance the resistance against pathogens. However, they can be detrimental in autoimmune diseases. Anti-inflammatory actions are of particular medicinal interest, because they are observed in high-grade inflammation such as sepsis, ischemia/reperfusion, and brain injury, and also in low-grade inflammation during aging and in neurodegenerative diseases. The mechanisms contributing to anti-inflammatory effects are manifold and comprise various pathways of secondary signaling. These include numerous antioxidant effects, downregulation of inducible and inhibition of neuronal NO synthases, downregulation of cyclooxygenase-2, inhibition of high-mobility group box-1 signaling and toll-like receptor-4 activation, prevention of inflammasome NLRP3 activation, inhibition of NF-κB activation and upregulation of nuclear factor erythroid 2-related factor 2 (Nrf2). These effects are also reflected by downregulation of proinflammatory and upregulation of anti-inflammatory cytokines. Proinflammatory actions of amyloid-β peptides are reduced by enhancing α-secretase and inhibition of β- and γ-secretases. A particular role in melatonin's actions seems to be associated with the upregulation of sirtuin-1 (SIRT1), which shares various effects known from melatonin and additionally interferes with the signaling by the mechanistic target of rapamycin (mTOR) and Notch, and reduces the expression of the proinflammatory lncRNA-CCL2. The conclusion on a partial mediation by SIRT1 is supported by repeatedly observed inhibitions of melatonin effects by sirtuin inhibitors or knockdown.
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Affiliation(s)
- Rüdiger Hardeland
- Johann Friedrich Blumenbach Institute of Zoology and Anthropology, University of Göttingen, Göttingen, Germany
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23
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Zhang X, Lu Y, Wu Q, Dai H, Li W, Lv S, Zhou X, Zhang X, Hang C, Wang J. Astaxanthin mitigates subarachnoid hemorrhage injury primarily by increasing sirtuin 1 and inhibiting the Toll‐like receptor 4 signaling pathway. FASEB J 2018; 33:722-737. [DOI: 10.1096/fj.201800642rr] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiangsheng Zhang
- Department of NeurosurgeryNanjing Drum Tower HospitalSchool of MedicineNanjing University Nanjing China
- Department of AnesthesiologyCritical Care MedicineJohns Hopkins University School of Medicine Baltimore Maryland USA
| | - Yue Lu
- Department of NeurosurgeryNanjing Drum Tower HospitalSchool of MedicineNanjing University Nanjing China
| | - Qi Wu
- Department of NeurosurgeryJinling HospitalSchool of MedicineNanjing University Nanjing China
| | - Haibin Dai
- Department of NeurosurgeryNanjing Drum Tower HospitalSchool of MedicineNanjing University Nanjing China
| | - Wei Li
- Department of NeurosurgeryNanjing Drum Tower HospitalSchool of MedicineNanjing University Nanjing China
| | - Shengyin Lv
- Department of NeurosurgeryJinling HospitalSchool of MedicineNanjing University Nanjing China
| | - Xiaoming Zhou
- Department of NeurosurgeryChangzheng HospitalSchool of MedicineSecond Military Medical University Shanghai China
| | - Xin Zhang
- Department of AnesthesiologyCritical Care MedicineJohns Hopkins University School of Medicine Baltimore Maryland USA
| | - Chunhua Hang
- Department of NeurosurgeryNanjing Drum Tower HospitalSchool of MedicineNanjing University Nanjing China
| | - Jian Wang
- Department of AnesthesiologyCritical Care MedicineJohns Hopkins University School of Medicine Baltimore Maryland USA
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Silibinin-induced autophagy mediated by PPARα-sirt1-AMPK pathway participated in the regulation of type I collagen-enhanced migration in murine 3T3-L1 preadipocytes. Mol Cell Biochem 2018; 450:1-23. [DOI: 10.1007/s11010-018-3368-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 05/17/2018] [Indexed: 12/21/2022]
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25
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Zhang TH, Huang CM, Gao X, Wang JW, Hao LL, Ji Q. Gastrodin inhibits high glucose‑induced human retinal endothelial cell apoptosis by regulating the SIRT1/TLR4/NF‑κBp65 signaling pathway. Mol Med Rep 2018; 17:7774-7780. [PMID: 29620267 DOI: 10.3892/mmr.2018.8841] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 03/06/2018] [Indexed: 11/05/2022] Open
Abstract
Diabetic retinopathy (DR), one of the most common complications of late‑phase diabetes, is associated with the ectopic apoptosis of microvascular cells. Gastrodin, a phenolic glucoside derived from Gastrodia elata Blume, has been reported to have antioxidant and anti‑inflammation activities. The aim of the present study was to investigate the effects of gastrodin on high glucose (HG)‑induced human retinal endothelial cell (HREC) injury and its underlying mechanism. The results demonstrated that HG induced cell apoptosis in HRECs, which was accompanied by increased levels of reactive oxygen species production. Gastrodin treatment significantly alleviated HG‑induced apoptosis and oxidative stress. Furthermore, HG stimulation decreased the levels of SIRT1, which was accompanied by an increase in Toll‑like receptor 4 (TLR4) expression and the levels of phosphorylated nuclear factor (NF)‑κBp65. However, the administration of gastrodin significantly inhibited the activation of the sirtuin 1 (SIRT1)/TLR4/NF‑κBp65 signaling pathway in HRECs exposed to HG. Collectively, the present study demonstrated that gastrodin may be effective against HG‑induced apoptosis and its action may be exerted through the regulation of the SIRT1/TLR4/NF‑κBp65 signaling pathway.
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Affiliation(s)
- Tong-He Zhang
- Department of Ophthalmology, The Second People's Hospital of Jinan, Jinan, Shandong 250001, P.R. China
| | - Chun-Mei Huang
- Department of Ophthalmology, The Second People's Hospital of Jinan, Jinan, Shandong 250001, P.R. China
| | - Xue Gao
- Department of Ophthalmology, The Second Hospital of Shandong University, Jinan, Shandong 250031, P.R. China
| | - Jia-Wei Wang
- Department of Ophthalmology, The Second Hospital of Shandong University, Jinan, Shandong 250031, P.R. China
| | - Lin-Lin Hao
- Department of Ophthalmology, The Second Hospital of Shandong University, Jinan, Shandong 250031, P.R. China
| | - Qiang Ji
- Department of Ophthalmology, The Second People's Hospital of Jinan, Jinan, Shandong 250001, P.R. China
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Liu CP, Zhang X, Tan QL, Xu WX, Zhou CY, Luo M, Li X, Huang RY, Zeng X. NF-κB pathways are involved in M1 polarization of RAW 264.7 macrophage by polyporus polysaccharide in the tumor microenvironment. PLoS One 2017; 12:e0188317. [PMID: 29155869 PMCID: PMC5695768 DOI: 10.1371/journal.pone.0188317] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 11/03/2017] [Indexed: 12/30/2022] Open
Abstract
Bladder cancer is one of the most malignant tumors closely associated with macrophages. Polyporus polysaccharide (PPS) has shown excellent efficacy in treating bladder cancer with minimal side effects. However, the molecular mechanisms underlying the effects of PPS in inhibiting bladder cancer remain unclear. In this study, we used macrophages cultured alone or with T24 human bladder cancer cell culture supernatant as study models. We found that PPS enhanced the activities of IFN-γ-stimulated RAW 264.7 macrophages, as shown by the release of inducible nitric oxide synthase (INOS), secretion of tumor necrosis factor (TNF)-α and interleukin (IL)-6, phagocytosis activity, as well as expression of M1 phenotype indicators, such as CD40, CD284 and CD86. PPS acted upstream in activation cascade of nuclear factor (NF)-κB signaling pathways by interfering with IκB phosphorylation. In addition, PPS regulated NF-κB (P65) signaling by interfering with Toll-like receptor (TLR)-4, INOS and cyclooxygenase (COX)-2. Our results indicate that PPS activates macrophages through TLR4/NF-κB signaling pathways.
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Affiliation(s)
- Chun-Ping Liu
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
- Discipline of Integrated Chinese and Western Medicine in Guangzhou University of Chinese medicine, Guangzhou, China
| | - Xian Zhang
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
| | - Qing-Long Tan
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
| | - Wen-Xing Xu
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
| | - Chang-Yuan Zhou
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
| | - Min Luo
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
| | - Xiong Li
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
| | - Run-Yue Huang
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
- Discipline of Integrated Chinese and Western Medicine in Guangzhou University of Chinese medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, China
- * E-mail: (XZ); (RYH)
| | - Xing Zeng
- Department of Integrated Chinese medicine immunization and Section Rheumatology Research, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
- Discipline of Integrated Chinese and Western Medicine in Guangzhou University of Chinese medicine, Guangzhou, China
- * E-mail: (XZ); (RYH)
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