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PHYTOMEDICINE · 2024 · IF 6.7

1,8-Cineole alleviates Nrf2-mediated redox imbalance and mitochondrial dysfunction in diabetes mellitus by targeting Sirt1

Hong Yang,Yong-xin Chen,Ke-gang Linghu,Peng-yan Ren,Yu-ting Yao,Feng Jiang,Guo-ping Wu,Ting-ting Chen,Ling Tao,Qian-yun Sun,Yue Li,Xiang-chun Shen

Background Type 2 diabetes mellitus (T2DM) is primarily attributed to impaired insulin secretion caused by β cell dysfunction. 1,8-Cineole is a key bioactive compound in the essential oil extracted from Fructus Alpiniae Zerumbet , which possesses anti-inflammatory and antioxidant properties. Nevertheless, it remains elusive about the protective effect and precise mechanisms of 1,8-Cineole against the β cell deterioration in DM. Purpose To investigate the effect of 1,8-Cineole on β cell dysfunction in T2DM and the potential mechanism of its action. Methods A mouse model of T2DM and a β cell model of high glucose induction were generated to analyze the pharmacological properties of 1,8-Cineole. Proteomic and network pharmacological analyses were conducted to identify the crucial pathways involved in T2DM. Resveratrol [a Sirtuin1 (Sirt1) agonist] and Sirt1 knockdown were used to ascertain the mechanism of 1,8-Cineole in T2DM. The binding affinity of 1,8-Cineole to Sirt1 was assessed with molecular docking, surface plasmon resonance, immunoprecipitation assay, and cellular thermal shift assay. Results First, dysregulated crucial pathways in T2DM were screened out, including redox imbalance and mitochondrial dysfunction. Subsequently, 1,8-Cineole was found to activate Sirt1 and nuclear factor E2-related factor 2 (Nrf2) to repress oxidative stress in both T2DM mice and high glucose-induced β cells, thereby relieving mitochondrial dysfunction and apoptosis. Furthermore, 1,8-Cineole specifically targeted Sirt1 and favored the direct interaction between Sirt1 and Nrf2, ultimately restoring β cell function. Conclusions Our findings provide the first evidence that 1,8-Cineole directly binds to Sirt1 protein and enhances its stability, therefore rectifying impaired oxidative homeostasis, and then suppressing mitochondrial dysfunction and apoptosis in T2DM, indicating that 1,8-Cineole may be a potential candidate drug for DM treatment.

CAS / MDL: 470-82-6
研究领域: 药理学 · 内分泌学 · 分子生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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INTERNATIONAL IMMUNOPHARMACOLOGY · 2023 · IF 5.6

ROS-activated MAPK/ERK pathway regulates crosstalk between Nrf2 and Hif-1α to promote IL-17D expression protecting the intestinal epithelial barrier under hyperoxia

Pingchuan Wang,Tianming Li,Changping Niu,Siyu Sun,Dongyan Liu

Reactive oxygen species (ROS) damage to the intestinal barrier is a side effect of prolonged hyperoxia therapy in neonates, which impairs growth and development of the intestine and promotes intestinal diseases. However, the research on clinical prevention and treatment is lacking. Therefore, we investigated the molecular mechanisms of the neonate intestinal response against hyperoxia-derived ROS to find targets for intestinal barrier damage prevention. Human intestinal epithelial cells were incubated under hyperoxia (85% oxygen) to build an in vitro model. ROS and the mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway were inhibited to detect the MAPK/ERK pathway, nuclear factor erythroid factor 2-related factor 2 (Nrf2), hypoxia-inducible factor-1α (Hif-1α), and interleukin-17D (IL-17D) expression. Nrf2 was inhibited to detect Hif-1α and IL-17D expression. Hif-1α was inhibited to detect Nrf2, IL-17D, and tight junction proteins expression and apoptosis. Cells were treated with human recombinant IL-17D to detect TNF-α, IL-1β, IL-10, and tight junction proteins expression. ROS, Nrf2, Hif-1α, and IL-17D were upregulated and the MAPK/ERK pathway was activated under hyperoxia. But ROS inhibition downregulated the MAPK/ERK pathway, Nrf2, Hif-1α, and IL-17D. MAPK/ERK pathway inhibition downregulated Nrf2, Hif-1α, and IL-17D. Nrf2 inhibition downregulated Hif-1α and IL-17D. Hif-1α inhibition downregulated Nrf2, IL-17D, tight junction proteins, and exacerbated apoptosis. The recombinant IL-17D downregulated TNF-α, IL-1β, but upregulated IL-10 and tight junction proteins. We concluded that Hyperoxia-generated ROS activated the MAPK/ERK pathway to regulate Nrf2, Hif-1α, and IL-17D expression. Nrf2 and Hif-1α were interdependent and promoted IL-17D. Importantly, Hif-1α and IL-17D expression protected the intestinal epithelial barrier.

CAS / MDL: 7646-79-9
研究领域: 分子生物学 · 细胞生物学 · 儿科 · 肠道生理学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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FREE RADICAL BIOLOGY AND MEDICINE · 2024 · IF 7.1

Isoliquiritigenin alleviates myocardial ischemia-reperfusion injury by regulating the Nrf2/HO-1/SLC7A11/GPX4 axis in mice

Deshan Yao,Liuxiang Bao,Sichuan Wang,Meng Tan,Yuanyuan Xu,Tianxu Wu,Zhengang Zhang,Kaizheng Gong

Ischemia-reperfusion (I/R) injury, a multifaceted pathological process, occurs when the prolongation of reperfusion duration triggers ferroptosis-mediated myocardial damage. Isoliquiritigenin (ISL), a single flavonoid from licorice, exhibits a wide range of pharmacological impacts, but its function in ferroptosis caused by myocardial I/R injury remains unclear. This study delved into the protective effect of ISL on myocardial I/R injury-induced ferroptosis and its mechanism. Neonatal mouse cardiomyocytes (NMCM) underwent hypoxia/reoxygenation (H/R) to simulate the pathological process of myocardial I/R. ISL significantly attenuated H/R-triggered production of reactive oxygen species in NMCM, reduced the expression of malondialdehyde and the activity of lactate dehydrogenase, enhanced superoxide dismutase and catalase activity, and increased the expression of nuclear factor E2-related factor 2 (Nrf2) and its downstream heme oxygenase 1 (HO-1), thereby mitigating oxidative stress damage. CCK8 experiment revealed that the ferroptosis inhibitor Ferrostatin-1 significantly improved myocardial cell viability after 24 h of reoxygenation, and ISL treatment showed a similar effect. ISL reduced intracellular free iron accumulation, up-regulated glutathione peroxidase 4 (GPX4) and solute carrier family 7 member 11 (SLC7A11) expression, and inhibited lipid peroxidation accumulation, thereby alleviating ferroptosis. The Nrf2-specific inhibitor ML385 counteracted ISL's defensive role against H/R-triggered oxidative stress damage and ferroptosis. In vivo experiments further confirmed that by regulating the translocation of Nrf2 into the nucleus, ISL treatment increased the levels of HO-1, GPX4, and SLC7A11, inhibited the expression of ACSL4, Drp1 to exert the antioxidant role, alleviated mitochondrial damage, and ferroptosis, ultimately reducing myocardial infarction area and injury induced by I/R. ML385 nearly abolished ISL's protective impact on the I/R model by inhibiting Nrf2 function. In summary, ISL is capable of mitigating oxidative stress, mitochondrial damage, and cardiomyocyte ferroptosis caused by I/R, thereby reducing myocardial injury. A key mechanism includes triggering the Nrf2/HO-1/SLC7A11/GPX4 pathway to prevent oxidative stress damage and cardiomyocyte ferroptosis caused by I/R.

研究领域: 药理学 · 心脏病学 · 分子生物学 · 细胞生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Food Science and Human Wellness · 2024 · IF 5.6

Procyanidin A1 and its digestive products alleviate acrylamide-induced IPEC-J2 cell damage through regulating Keap1/Nrf2 pathway

Fangfang Yan,Qun Lu,Chengming Wang,Rui Liu

Our previous study has revealed that procyanidin A 1 (A 1 ) and its simulated digestive product (D-A 1 ) can alleviate acrylamide (ACR)-induced intestine cell damage. However, the underlying mechanism remains unknown. In this study, we elucidated the molecular mechanism for A 1 and D-A 1 to alleviate ACR-stimulated IPEC-J2 cell damage. ACR slightly activated nuclear factor erythroid 2-related factor 2 (Nrf2) signaling and its target genes, but this activation could not reduce intestine cell damage. A 1 and D-A 1 could alleviate ACR-induced cell damage, but the effect was abrogated in cells transiently transfected with Nrf2 small interfering RNA (siRNA). Further investigation confirmed that A 1 and D-A 1 interacted with Kelch-like ECH-associated protein 1 (Keap1), which boosted the stabilization of Nrf2, subsequently promoted the translocation of Nrf2 into the nucleus, and further increased the expression of antioxidant proteins, thereby inhibiting glutathione (GSH) consumption, maintaining redox balance and eventually alleviating ACR-induced cell damage. Importantly, there was no difference between A 1 and D-A 1 treated groups, indicating that A 1 can tolerate gastrointestinal digestion and may be a potential compound to limit the toxicity of ACR.

CAS / MDL: 79-10-7
研究领域: 毒理学 · 细胞生物学 · 分子生物学
✓ 已验证 产品关联 DOI 高影响因子
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FEBS Open Bio · 2021 ·Vol. 11 ·期 8 ·2118-2126 · IF 2.693

Lipoxin A4 protects primary spinal cord neurons from Erastin-induced ferroptosis by activating the Akt/Nrf2/HO-1 signaling pathway

Na Wei,Tan Lu,Libin Yang,Yonghan Dong,Xiaotan Liu

Ferroptosis is an iron-dependent programmed cell death, which participates in the pathogenesis of spinal cord injury (SCI). Our previous study has revealed that Lipoxin A4 (LXA4) exerts a protective role in SCI. Here, we investigated whether LXA4 can protect SCI through inhibiting neuronal ferroptosis. We treated primary spinal cord neurons with Erastin (ferroptosis activator) to induce ferroptosis. Erastin treatment reduced cell viability and enhanced cell death of primary spinal cord neurons, which was rescued by ferrostatin-1 (ferroptosis inhibitor). Moreover, Erastin repressed glutathione peroxidase 4 (GPX4) expression and the levels of glutathione and cysteine in primary spinal cord neurons. Erastin also enhanced the expression of ferroptosis biomarkers (PTGS2 and ACSL4) and the levels of reactive oxygen species (ROS) in primary spinal cord neurons. The influence conferred by Erastin was effectively abolished by LXA4 treatment. Furthermore, LXA4 enhanced the protein expression of p-AKT, nuclear factor (erythroid-derived 2)-like 2 (Nrf2) and haem-oxygenase-1 (HO-1) in primary spinal cord neurons. LXA4-mediated inhibition of ferroptosis of primary spinal cord neurons was prohibited by LY294002 (AKT inhibitor), brusatol (Nrf2 inhibitor) or zinc protoporphyrin (HO-1 inhibitor). In conclusion, this work demonstrated that LXA4 exerted a neuroprotective effect in Erastin-induced ferroptosis of primary spinal cord neurons by activating the Akt / Nrf2 / HO-1 signaling pathway. Thus, this work provides novel insights into the mechanisms of action of LXA4 in ferroptosis of primary spinal cord neurons and indicates that LXA4 may be a potential therapeutic agent for SCI.

研究领域: 神经科学 · 药理学 · 细胞生物学 · 神经病学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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PHYTOMEDICINE · 2023 · IF 7.9

Pectolinarigenin ameliorates acetaminophen-induced acute liver injury via attenuating oxidative stress and inflammatory response in Nrf2 and PPARa dependent manners

Qian Li,Wen Zhang,Nuo Cheng,Yadi Zhu,Hao Li,Shuijun Zhang,Wenzhi Guo,Guangbo Ge

Background Cirsii Japonici Herba Carbonisata (Dajitan in Chinese) has been used to treat liver disorders in Asian countries. Pectolinarigenin (PEC), an abundant constituent in Dajitan, has been found to possess a wide range of biological benefits, including hepatoprotective effects. However, the effects of PEC on acetaminophen (APAP)-induced liver injury (AILI) and the underlying mechanisms have not been studied. Purposes To explore the role and mechanisms of PEC in protecting against AILI. Study design and methods The hepatoprotective benefits of PEC were studied using a mouse model and HepG2 cells. PEC was tested for its effects by injecting it intraperitoneally before APAP administration. To assess liver damage, histological and biochemical tests were performed. The levels of inflammatory factors in the liver were measured using RT-PCR and ELISA . Western blotting was used to measure the expression of a panel of key proteins involved in APAP metabolism, as well as Nrf2 and PPARα. PEC mechanisms on AILI were investigated using HepG2 cells, while the Nrf2 inhibitor (ML385) and PPARα inhibitor (GW6471) were used to validate the importance of either Nrf2 and PPARα in the hepatoprotective effects of PEC. Results PEC treatment decreased serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and interleukin-1β (IL-1β) levels in the liver. PEC pretreatment increased the activity of superoxide dismutase (SOD) and glutathione (GSH) while decreasing malondialdehyde production (MDA). PEC could also up-regulate two important APAP detoxification enzymes (UGT1A1 and SULT1A1). Further research revealed that PEC reduced hepatic oxidative damage and inflammation, and up-regulated APAP detoxification enzymes in hepatocytes by activating the Nrf2 and PPARα signaling pathways . Conclusions PEC ameliorates AILI by decreasing hepatic oxidative stress and inflammation while increasing phase Ⅱ detoxification enzymes related to APAP harmless metabolism through activation of Nrf2 and PPARα signaling. Hence, PEC may serve as a promising therapeutic drug against AILI.

CAS / MDL: 616-91-1
研究领域: 药理学 · 肝病学 · 分子生物学 · 毒理学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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JOURNAL OF PERIODONTAL RESEARCH · 2023 · IF 3.5

Resveratrol modulates the inflammatory response in hPDLSCs via the NRF2/HO-1 and NF-κB pathways and promotes osteogenic differentiation

Yifan Ma,Yi Qian,Yuteng Chen,Xiaoxu Ruan,Xiaoya Peng,Yi Sun,Jue Zhang,Jingjing Luo,Songlin Zhou,Chao Deng

Objective The purpose of this study was to investigate resveratrol's specific role as an anti-inflammatory and osteogenic differentiation of hPDLSCs in periodontitis and to reveal the mechanisms involved. Background Numerous studies have shown that inhibiting the inflammatory response of periodontal tissues and promoting the regeneration of alveolar bone are crucial treatments for periodontitis. Resveratrol has been found to have certain anti-inflammatory property. However, the anti-inflammatory mechanism and osteogenic effect of resveratrol in periodontitis are poorly understood. Materials and Methods We constructed an in vitro periodontitis model by LPS stimulation of hPDLSCs and performed WB, RT-qPCR, and immunofluorescence to analyze inflammatory factors and related pathways. In addition, we explored the osteogenic ability of resveratrol in in vitro models. Results In vitro, resveratrol ameliorated the inflammatory response associated with activation of the NF-κB pathway through activation of the NRF2/HO-1 pathway, characterized by inhibition of p65/p50 nuclear translocation and the proinflammatory cytokines interleukin-1β levels. Resveratrol also has a positive effect on osteogenic differentiation. Conclusions Observations suggest that resveratrol modulates the inflammatory response in hPDLSCs via the NRF2/HO-1 and NF-κB pathways and promotes osteogenic differentiation.

CAS / MDL: 501-36-0
研究领域: 牙科 · 药理学 · 分子生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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JOURNAL OF FOOD SCIENCE · 2020 ·Vol. 85 ·期 6 ·1752-1763 · IF 2.479

Synergistic antioxidant effects of petunidin and lycopene in H9c2 cells submitted to hydrogen peroxide: Role of Akt/Nrf2 pathway

Shilian Zheng,Zeyuan Deng,Fang Chen,Liufeng Zheng,Yao Pan,Qian Xing,Rong Tsao,Hongyan Li

Phenolics and carotenoids coexist in fruits and vegetables and could possess interaction effects after consumption. The present study aims to elucidate the possible mechanisms of the antioxidant interactions between anthocyanins and carotenoids using petunidin and lycopene as examples in hydrogen peroxide (H 2 O 2 )-induced heart myofibroblast cell (H9c2) line model. The results revealed that petunidin and lycopene showed antioxidant effects and petunidin in a larger proportion mixed with lycopene, for example, petunidin: lycopene = 9:1 significantly protected against the loss of the cell viability (8.98 ± 1.03%) and intracellular antioxidant enzyme activities of superoxide dismutase (SOD, 27.07 ± 3.51%), catalase (CAT, 29.51 ± 6.12%), and glutathione peroxidase (GSH-Px, 20.33 ± 2.65%). Moreover, the messenger RNA (mRNA) and protein expressions of NAD(P)H quinone reductase (NQO1) and heme oxygenase (HO-1) of the nuclear factor erythrocyte 2-related factor 2 (Nrf2) signaling pathway were significantly induced in petunidin, lycopene, and synergistic combinations, suggesting that the antioxidant action was through activating the Nrf2 antioxidant response pathway. This was further validated by Nrf2 siRNA, and the results that petunidin significantly induced more of NQO1 expression and lycopene more of HO-1 suggested that the synergism may be a result of concerted actions by the two compounds on these two different target genes of the Nrf2 pathway. The two compounds also significantly increased the phosphorylation of Akt in synergistic combinations. Findings of the present study demonstrated that petunidin and lycopene exerted synergistic antioxidant effects when petunidin in a larger proportion in the combinations and contribute to the prevention of cellular redox homeostasis, which might provide a theoretical basis for phenolics and carotenoids playing beneficial effects on the cardiovascular risk. Practical Application In this study, we revealed that the combined treatments of petunidin and lycopen inhibited H 2 O 2 -induced oxidative damage in myocardial cells. Moreover, the treatments contributed to the Nrf2 pathway and the restoration of cellular redox homeostasis might provide a theoretical basis for phenolics and carotenoids playing beneficial effects on the cardiovascular risk.

CAS / MDL: 502-65-8
研究领域: 药理学 · 细胞生物学 · 分子生物学 · 营养学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY · 2023 · IF 3.9

Quercetin attenuates environmental Avermectin-induced ROS accumulation and alleviates gill damage in carp through activation of the Nrf2 pathway

Mengyuan Zhou,Jingchao Qiang,Jiajie Gan,Xuhui Xu,Xing Li,Shuai Zhang,Baoshi Xu,Zibo Dong

One of the most often used insecticides is Avermectin (AVM), which is toxic to aquatic organisms. Quercetin (Que) is a fruit and vegetable rich flavonoid with antioxidant activity. Fish gills are the most important respiratory organ. Carp is a biological model for studying environmental toxicology. To better understand the mechanism by which Que reduces AVM-induced gill damage in carp, we created a carp model with AVM and Que supplementation. In this study, four groups were created: the Control group, the Que group (400 mg/kg), the AVM group (2.404 μg/L), and the Que plus AVM group. The analytical methods used in this study were pathological structure examination, QPCR, Reactive Oxygen Species (ROS) and Western blot. The results showed that Que alleviated AVM-induced oxidative stress, inflammatory damage and apoptosis in the gill tissues of carp by activating the Nrf2 pathway. The mechanism was that Que alleviated the accumulation of ROS, reduced the balance between oxidation and antioxidant disrupted by AVM exposure, lowered the content of lipid peroxidation product malondialdehyde (MDA), and increased the content of antioxidant enzymes glutathione (GSH) and catalase (CAT). The Nrf2 pathway was activated. Meanwhile, Que inhibited apoptosis in the gills of carp by decreasing the levels of Bax, Cytochrome C(Cytoc), Caspase9, Cleaved-Caspase3, and elevating Bax. This is significant for future studies on Que and AVM. New recommendations are provided to reduce the threat of pollution in the water environment.

研究领域: 环境毒理学 · 水生生物学 · 药理学 · 分子生物学
✓ 已验证 DOI PubMed 高影响因子
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Anti-Cancer Agents in Medicinal Chemistry · 2024 ·Vol. 24 ·期 15 ·1142-1150 · IF 2.6

Arsenic Trioxide Suppresses Angiogenesis in Non-small Cell Lung Cancer via the Nrf2-IL-33 Signaling Pathway

Wang Mingdong,Yin Jizhong,Han Qianyu,Li Bing,Zhao Xue-Wei,Xue Lei

Background: Non-Small Cell Lung Cancer (NSCLC) ranks as a leading cause of cancer-related mortality, necessitating the urgent search for cost-effective and efficient anti-NSCLC drugs. Our preliminary research has demonstrated that arsenic trioxide (ATO) significantly inhibits NSCLC angiogenesis, exerting anti-tumor effects. In conjunction with existing literature reports, the Nrf2-IL-33 pathway is emerging as a novel mechanism in NSCLC angiogenesis. Objective: This study aimed to elucidate whether ATO can inhibit NSCLC angiogenesis through the Nrf2-IL-33 pathway. Methods: Immunohistochemistry was employed to assess the expression of Nrf2, IL-33, and CD31 in tumor tissues from patients with NSCLC. DETA-NONOate was used as a nitric oxide (NO) donor to mimic high levels of NO in the tumor microenvironment. Western blot, quantitative real-time PCR, and enzyme-linked immunosorbent assay were utilized to evaluate the expression of Nrf2 and IL-33 in the NCI-H1299 cell line. Subcutaneous xenograft models were established in nude mice by implanting NCI-H1299 cells to assess the anti-tumor efficacy of ATO. Results: High expression levels of Nrf2 and IL-33 were observed in tumor samples from patients with NSCLC, and Nrf2 expression positively correlated with microvascular density in NSCLC. In vitro, NO (released from 1mM DETA-NONOate) promoted activation of the Nrf2-IL-33 signaling pathway in NCI-H1299 cells, which was reversed by ATO. Additionally, both Nrf2 deficiency and ATO treatment significantly attenuated NOinduced IL-33 expression. In vivo, both ATO and the Nrf2 inhibitor ML385 demonstrated significant inhibitory effects on angiogenesis tumor growth. Conclusion: Nrf2-IL-33 signaling is usually activated in NSCLC and positively correlates with tumor angiogenesis. ATO effectively disrupts the activation of the Nrf2-IL-33 pathway in NSCLC and thus inhibits angiogenesis, suggesting its potential as an anti-angiogenic agent for use in the treatment of NSCLC.

研究领域: 肿瘤学 · 药理学 · 分子生物学 · 细胞生物学
✓ 已验证 DOI PubMed 高影响因子
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Food & Function · 2017 ·Vol. 9 ·期 1 ·371-378 · IF 3.247

Piceatannol attenuates behavioral disorder and neurological deficits in aging mice via activating the Nrf2 pathway

Yan Zhang,Li-Hong Zhang,Xi Chen,Ning Zhang,Guang Li

Aging is a complex process that is accompanied by neurological damage. Chronic injection of D-galactose (D-gal) can accelerate the aging process similar to natural aging and is commonly used to build an aging model to investigate aging. In the present study, the effects of piceatannol on D-gal-induced aging in mice were evaluated. Piceatannol treatment showed an observable anti-aging effect. Results obtained in vivo showed that piceatannol retained spontaneous motor activity and enhanced spatial learning and memory abilities in mice in which aging was induced by D-gal. Morphometric analysis displayed that piceatannol prevented D-gal-induced neuronal loss, increased the number of Nissl bodies, and promoted cell proliferation in the hippocampus and cortex. Piceatannol also significantly decreased the level of MDA and elevated SOD and CAT activity in the hippocampal and cortical tissues. Furthermore, western blotting results revealed that piceatannol treatment noticeably reversed the suppression of Nrf2 nuclear translocation and increased the expressions of HO-1 and NOQ1 in mice with aging induced by D-gal. Furthermore, piceatannol activated the Nrf2 pathway in natural aging mice, whereas treatment with the Nrf2 inhibitor brusatol reversed the increased expressions of Nrf2, HO-1, and NOQ1. In conclusion, treatment with piceatannol ameliorates behavioral disorder and brain injury in an aging mouse model; this suggests that piceatannol is a promising pharmaceutical candidate for the treatment of age-associated diseases.

CAS / MDL: 3646-73-9
研究领域: 老年学 · 神经科学 · 药理学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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RESPIRATORY RESEARCH · 2024 ·Vol. 25 ·期 1 ·1-13 · IF 4.7

Acod1/itaconate activates Nrf2 in pulmonary microvascular endothelial cells to protect against the obesity-induced pulmonary microvascular endotheliopathy

Zhu Li,Wu Zhuhua,Liu Yingli,Ming Yue,Xie Pei,Jiang Miao,Qi Yong

Background Obesity is the main risk factor leading to the development of various respiratory diseases, such as asthma and pulmonary hypertension. Pulmonary microvascular endothelial cells (PMVECs) play a significant role in the development of lung diseases. Aconitate decarboxylase 1 (Acod1) mediates the production of itaconate, and Acod1/itaconate axis has been reported to play a protective role in multiple diseases. However, the roles of Acod1/itaconate axis in the PMVECs of obese mice are still unclear.Methods mRNA-seq was performed to identify the differentially expressed genes (DEGs) between high-fat diet (HFD)-induced PMVECs and chow-fed PMVECs in mice (|log2 fold change| ≥ 1, p ≤ 0.05). Free fatty acid (FFA) was used to induce cell injury, inflammation and mitochondrial oxidative stress in mouse PMVECs after transfection with the Acod1 overexpressed plasmid or 4-Octyl Itaconate (4-OI) administration. In addition, we investigated whether the nuclear factor erythroid 2-like 2 (Nrf2) pathway was involved in the effects of Acod1/itaconate in FFA-induced PMVECs.Results Down-regulated Acod1 was identified in HFD mouse PMVECs by mRNA-seq. Acod1 expression was also reduced in FFA-treated PMVECs. Acod1 overexpression inhibited cell injury, inflammation and mitochondrial oxidative stress induced by FFA in mouse PMVECs. 4-OI administration showed the consistent results in FFA-treated mouse PMVECs. Moreover, silencing Nrf2 reversed the effects of Acod1 overexpression and 4-OI administration in FFA-treated PMVECs, indicating that Nrf2 activation was required for the protective effects of Acod1/itaconate.Conclusion Our results demonstrated that Acod1/Itaconate axis might protect mouse PMVECs from FFA-induced injury, inflammation and mitochondrial oxidative stress via activating Nrf2 pathway. It was meaningful for the treatment of obesity-caused pulmonary microvascular endotheliopathy.

CAS / MDL: 47165-04-8
研究领域: 呼吸系统疾病 · 分子生物学 · 细胞生物学 · 内分泌学 · 药理学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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