MOLECULAR MEDICINE
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2024
·Vol. 30
·期 1
·1-26
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IF 6
Wei Xuehua,Xiong Xiangpeng,Wang Pingping,Zhang Shufang,Peng Dongxian
Background The complex interplay between Sirtuin 1 (SIRT1) and FOXO3 in endometrial cancer (EC) remains understudied. This research aims to unravel the interactions of deacetylase SIRT1 and transcription factor FOXO3 in EC, focusing on their impact on mitophagy and hormone resistance.Methods High-throughput sequencing, cell experiments, and bioinformatics tools were employed to investigate the roles and interactions of SIRT1 and FOXO3 in EC. Co-immunoprecipitation (Co-IP) assay was used to assess the interaction between SIRT1 and FOXO3 in RL95-2 cells. Functional assays were used to assess cell viability, proliferation, migration, invasion, apoptosis, and the expression of related genes and proteins. A mouse model of EC was established to evaluate tumor growth and hormone resistance under different interventions. Immunohistochemistry and TUNEL assays were used to assess protein expression and apoptosis in tumor tissues.Results High-throughput transcriptome sequencing revealed a close association between SIRT1, FOXO3, and EC development. Co-IP showed a protein–protein interaction between SIRT1 and FOXO3. Overexpression of SIRT1 enhanced FOXO3 deacetylation and activity, promoting BNIP3 transcription and PINK1/Parkin-mediated mitophagy, which in turn promoted cell proliferation, migration, invasion, and inhibited apoptosis in vitro, as well as increased tumor growth and hormone resistance in vivo. These findings highlighted SIRT1 as an upstream regulator and potential therapeutic target in EC.Conclusion This study reveals a novel molecular mechanism underlying the functional relevance of SIRT1 in regulating mitophagy and hormone resistance through the deacetylation of FOXO3 in EC, thereby providing valuable insights for new therapeutic strategies.
研究领域:
癌症生物学
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分子生物学
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细胞生物学
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DOI
PubMed
高影响因子
TOXICOLOGY LETTERS
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2025
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IF 2.9
Zhongming Ye,Qihao Huang,Haipeng Wu,Shimei Wang,Boxin Li,Minjuan Zeng,Tikeng Jiang,Biyan Ye,Yixian Wei,Lei Sun,Shaoying Wang,Yutao Zeng,Yuting Chen,Huanwen Tang
Benzene, a recognized carcinogen, is utilized in synthesizing various chemicals. Epidemiological studies have established a positive correlation between benzene exposure and increased incidences of abnormal menstruation and dysmenorrhea. This exposure might also pose risks to the fetal hematopoietic system. However, the precise molecular mechanisms underlying these effects are not fully understood. In this study, a chronic benzene exposure model was established through dynamic inhalation. We assessed the autophagy levels in mouse ovarian granulosa cells and human ovarian granulosa cells treated with 1,4-benzoquinone using molecular biology techniques such as qPCR, Western blot, and transmission electron microscopy (TEM), etc. The experimental results show that Benzene-exposed mice exhibited autophagy, a reduced number of ovarian granulosa cells, and vacuolar lesions in the fallopian tubes. Cell-based experiments demonstrated that benzene exposure significantly upregulated SNHG15 expression in human ovarian granulosa cells ( P < 0.05). The upregulation of SNHG15 enhanced FOXO3 expression via the miR-3143/FOXO3 axis, which in turn increased the transcription of autophagy-related proteins such as Atg5 ( P < 0.05), ultimately leading to excessive autophagy in granulosa cells and ovarian dysfunction. Benzene and its metabolite benzoquinone increase autophagy in ovarian granulosa cells. The lncRNA SNHG15 regulates this autophagy induced by benzene exposure through sponge-like binding to miR-3143/FOXO3, thus impairing ovarian function. Inhibiting SNHG15, miR-3143, and FOXO3 expression markedly reduced autophagy in granulosa cells and ameliorated ovarian dysfunction resulting from benzene exposure. These results suggest that the ceRNA axis involving SNHG15 may be a potential clinical therapeutic target.
研究领域:
毒理学
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分子生物学
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遗传学
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生殖生物学
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环境卫生
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DOI
PubMed
高影响因子
Nature Communications
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2022
·Vol. 13
·期 1
·1-23
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IF 17.694
Hao WeiChao,Dian MeiJuan,Zhou Ying,Zhong QiuLing,Pang WenQian,Li ZiJian,Zhao YaYan,Ma JiaCheng,Lin XiaoLin,Luo RenRu,Li YongLong,Jia JunShuang,Shen HongFen,Huang ShiHao,Dai GuanQi,Wang JiaHong,Sun Yan,Xiao Dong
Autophagy is crucial for maintaining cellular energy homeostasis and for cells to adapt to nutrient deficiency, and nutrient sensors regulating autophagy have been reported previously. However, the role of eiptranscriptomic modifications such as m 6 A in the regulation of starvation-induced autophagy is unclear. Here, we show that the m 6 A reader YTHDF3 is essential for autophagy induction. m 6 A modification is up-regulated to promote autophagosome formation and lysosomal degradation upon nutrient deficiency. METTL3 depletion leads to a loss of functional m 6 A modification and inhibits YTHDF3-mediated autophagy flux. YTHDF3 promotes autophagy by recognizing m 6 A modification sites around the stop codon of FOXO3 mRNA. YTHDF3 also recruits eIF3a and eIF4B to facilitate FOXO3 translation, subsequently initiating autophagy. Overall, our study demonstrates that the epitranscriptome regulator YTHDF3 functions as a nutrient responder, providing a glimpse into the post-transcriptional RNA modifications that regulate metabolic homeostasis.
研究领域:
细胞生物学
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分子生物学
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表观遗传学
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DOI
PubMed
高影响因子
Journal of Translational Medicine
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2024
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IF 6.1
Wenbin Hua,Lin Xie,Chenpeng Dong,Guoyu Yang,Shouyuan Chi,Zhiqiang Xu,Cao Yang,Huiwen Wang,Xinghuo Wu
Intervertebral disc degeneration (IVDD) is a common cause of low back pain. Procyanidin C1 (PCC1) has been demonstrated to exert a protective effect on nucleus pulposus (NP) cells, and therefore, plays a critical role in the prevention and therapy of IVDD. Clarifying the pathophysiological characteristics and molecular mechanisms of IVDD may be helpful in establishing novel preventive and therapeutic strategies. This study aimed to investigate the probable mechanisms underlying the protection against acidic pH stress induced human NP cell injury. In vitro, acidic pH stress induced degeneration, mitochondrial dynamics imbalance, mitophagy, and mitochondria-mediated apoptosis in NP cells, all of which were ameliorated by PCC1. Autophagy inhibition partially eliminated the protective effects of PCC1 on mitochondrial homeostasis in NP cells. Moreover, PCC1 activated the sirtuin 3 (SIRT3)/forkhead box O3 (FOXO3) signaling pathway, a pivotal signaling pathway involved in the regulation of mitochondrial homeostasis in NP cells. In vivo, PCC1 ameliorated IVDD in a rat model and preserved the extracellular matrix of NP cells. Consequently, the protective effects of PCC1 on NP cells may inhibit IVDD progression via regulation of the SIRT3/FOXO3 signaling pathway. Therefore, regulation of the SIRT3/FOXO3 signaling pathway may be a novel preventive and therapeutic strategy for IVDD.
研究领域:
骨科学
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分子生物学
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细胞生物学
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DOI
PubMed
高影响因子
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR AND CELL BIOLOGY OF LIPIDS
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2022
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IF 5.228
Weimin Lin,Lei Chen,Wenjing Meng,Kai Yang,Shengjuan Wei,Wei Wei,Jie Chen,Lifan Zhang
As a key adipogenic marker, C/EBPα (CCAAT/enhancer binding protein α) is also an important factor in regulating targets containing CCAAT element for transcription, whose products include coding and non-coding RNAs (ncRNAs). However, knowledge of the mechanism of C/EBPα affecting pre-adipocyte proliferation and adipogenesis through regulating ncRNA is still limited. In this study, we firstly conducted an investigation concerning the impact of C/EBPα knockdown on porcine pre-adipocytes by using RNA sequencing (RNA-Seq) to identify the role of key ncRNAs, especially lncRNAs and their correlated mRNAs in regulating proliferation and differentiation of porcine pre-adipocytes. 97 differentially expressed (DE) mRNAs and 4 DE lncRNAs were identified in si-C/EBPα groups compared with the si-NC groups. Meanwhile, we found C/EBPα directly target the promoter of a novel lncRNA , namely MSTRG.12568.2 , which was trans -correlated with STYX (serine/threonine/tyrosine interacting protein), an important candidate gene for regulating cell proliferation . Moreover, FOXO3 (forkhead box O3) was identified as a co-regulator with MSTR.12568.2 for STYX . Overexpression and knockdown of any of the MSTRG.12568.2 , STYX , and FOXO3 increased and decreased the levels of pre-adipocyte proliferation and differentiation, respectively, which demonstrated that they played a positive role in adipogenesis of pre-adipocytes. Furthermore, our results revealed that FOXO3 was necessary for MSTRG.12568.2 to trans -activate STYX . We revealed that C/EBPα regulated pre-adipocyte proliferation and differentiation through mediating trans -activation of MSTRG.12568.2 -FOXO3 to STYX . These results provide a novel regulation signal for C/EBPα to influence porcine pre-adipocyte proliferation and differentiation and greatly benefit to our understanding of molecular mechanism regulating subcutaneous adipogenesis.
研究领域:
分子生物学
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细胞生物学
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基因组学
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脂肪组织生物学
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DOI
PubMed
高影响因子
Theranostics
·
2025
·Vol. 15
·期 9
·3877
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IF 13.3
Yueyang Li,Yu Zhai,Tianling Wang,Siya Wang,Yu Tian,Zhiqun Bian,Yang Zhang,Chao Zhang,Minghan Liu,Changqing Li
Rationale: Nucleus pulposus (NP) fibrosis is a contributing factor to intervertebral disc degeneration (IVDD), which lacks an effective treatment. This study focuses on elucidating the role and mechanisms of the TGF-β signaling repressor SKI in NP fibrosis and exploring its therapeutic potential. Methods: Single-cell RNA sequencing (scRNA-seq) was used to investigate fibrotic nucleus pulposus cell (NPC) subsets and assess TGF-β signaling activation. Two recombinant plasmids encoding single-chain variable fragments (scFvs) targeting the fibrotic NPC marker FAP and SKI mRNA were co-transfected into HEK-293T cells to yield functionalized exosomes (EX ski+scFv ). The addition of EX ski+scFv to a gelatin/oxidized sodium alginate hydrogel produced a pH-responsive exosome/hydrogel system named Gel@EX ski+scFv . The therapeutic effects and underlying mechanism of Gel@EX ski+scFv were evaluated by RNA sequencing, molecular docking and coimmunoprecipitation. Results: A fibrotic NPC subset was characterized by elevated FAP and diminished SKI expression, along with activation of the TGF-β signaling pathway. SKI overexpression reduced fibrosis in TGF-β-treated NPCs. EX ski+scFv successfully delivered SKI mRNA to FAP-expressing fibrotic NPCs. Gel@EX ski+scFv possessed good mechanical properties, degradability, injectability, and biocompatibility. Gel@EX ski+scFv effectively alleviated NP fibrosis and IVDD in rats. RNA sequencing, molecular docking and coimmunoprecipitation revealed that SKI could interact with FOXO3 to suppress the TGF-β signaling pathway. Conclusion: This study elucidates the mechanism by which SKI -mediated TGF-β signaling inhibition alleviates NP fibrosis. The development of the Gel@EX ski+scFv system for the targeted delivery of SKI mRNA offers a promising therapeutic strategy to alleviate NP fibrosis and IVDD in the future.
研究领域:
生物医学
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分子生物学
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组织工程
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DOI
PubMed
高影响因子
PHYTOMEDICINE
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2024
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IF 6.7
Yang-yang Lu,Yuan-yuan Fang,Sha-sha Wang,Jing Guo,Jia-lin Song,Liang Zhu,Zhong-kun Lin,Rui Wang,Si-yi Zhang,Wen-sheng Qiu,Wei-wei Qi
Background Gastric cancer is among the common solid tumors. Chemotherapy resistance is the most common issue in gastric cancer treatment. Inhibiting intracellular autophagy may be a feasible method for overcoming chemotherapy resistance. Cepharanthine (CEP), a natural small molecule extracted from the stephania cephalantha Hayata plant, has been demonstrated to significantly inhibit cancer growth and can regulate autophagy. Although CEP can significantly inhibit cancer growth, it remains unclear whether CEP can regulate autophagy in gastric cancer. This study aimed to investigate whether CEP can enhance the sensitivity of gastric cancer to chemotherapy and elucidate its molecular mechanism. Methods Three gastric cancer cell lines (AGS, SGC7901, and MFC) and one normal gastric mucosal epithelial cell line (GES-1) were used for in vitro experiments. The characterization of autophagy in gastric cancer cells included the detection of autophagy markers and autophagy flux through immunofluorescence staining and Western blotting, as well as the assessment of lysosomal function using fluorescence staining (LysoTracker Red DND-99, Acridine Orange staining) and Western blotting. The cytotoxicity of CEP, autophagy inhibitors (chloroquine [CQ] and 3-methyladenine [3MA]), and chemotherapy drugs (doxorubicin [DOX] and cisplatin [CIS]) was evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, cell colony formation, and fluorescence staining techniques (H2DCFDA, Dihydroethidium, and JC-1 staining). The interaction between CEP and autophagy inhibitors was tested in a 615 mice model, and changes in the gut microbiota were determined through accurate 16S absolute quantification sequencing. The signaling pathway and autophagy regulatory target TRIB3-FOXO3-FOXM1 were confirmed through molecular docking, RNA sequencing, bioinformatic analysis, transfection techniques, and Western blotting. Results CEP blocked autophagic flux in gastric cancer cells without affecting lysosomal function. As a novel autophagy inhibitor, CEP could combine with conventional autophagy inhibitors (CQ and 3MA) to block intracellular autophagy, thereby inhibiting gastric cancer growth. During this process, changes in the gut microbiota were observed, including low-level changes in Odoribacterium, Erysipelatoclostridium , and ParaPrevotella and high-level changes in Ileibacterium, Enterorhabdus , and Bifidobacterium . Additionally, CEP synergistically inhibited the growth of gastric cancer when combined with chemotherapy drugs. Mechanistically, the TRIB3-FOXO3-FOXM1 signaling axis was found to be involved in the inhibition of gastric cancer by CEP combined with autophagy inhibitors and chemotherapy drugs, thereby mediating cell apoptosis. Conclusion This study links the TRIB3-FOXO3-FOXM1 axis with chemotherapy efficacy. Our findings demonstrated that CEP inhibits autophagy by modulating the FOXO3-FOXM1 axis. When combined with chemotherapy drugs (DOX and CIS), CEP, as an autophagy inhibitor, can limit TRIB3 protein expression, thereby regulating the FOXO3-FOXM1 axis and enhancing its ability to prevent gastric cancer growth. These findings may contribute to improving the prognosis of patients with gastric cancer. Furthermore, these results enrich the fundamental understanding of how autophagy inhibition can enhance clinical cancer treatment efficacy and provide insights into the potential mechanisms by which CEP functions as an anti-tumor drug, thereby exploring its value for clinical application.
研究领域:
肿瘤学
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药理学
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细胞生物学
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分子生物学
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微生物学
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DOI
PubMed
高影响因子
INTERNATIONAL IMMUNOPHARMACOLOGY
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2025
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IF 4.7
Chaoyue Yang,Mingli Zhong,Xuefei Jiao,Houkang Cao,Yandan Qin,Hengjie Xu,Fengyue Guo,Zixuan Tang,Tiansong Lv,Lilin Guan,Yongwang Wang,Ya Gao,Kefeng Zhang
Background Isoniazid and rifampicin, frontline tuberculosis drugs, frequently induce drug-induced liver injury (DILI), marked by hepatitis and hepatocyte necrosis. Polysaccharides from Dicliptera chinensis (L.) Juss. (DCP) exhibit anti-inflammatory, antioxidant, and hepatoprotective properties, but their effects on DILI remain unexplored Objective This study investigated DCP therapeutic potential against DILI and elucidated its molecular mechanisms Methods In vivo (using C57BL/6 mice) and in vitro (using HepG2 cells) DILI models were established and treated with DCP. Transcriptomics, qRT-PCR, and Western blotting were employed to analyze pathway regulation Results DCP significantly attenuated hepatocyte apoptosis, inflammation, and oxidative stress in DILI mice. Transcriptomic analysis linked DCP'S effects to the modulation of AMPK-FOXO3, p53, and NF-κB pathways, alongside regulation of antioxidant and cell cycle genes. In HepG2 cells, DCP similarly protected against DILI by enhancing AMPK phosphorylation, which facilitated the FOXO3 nuclear translocation. Both models demonstrated DCP'S suppression of p53 and NF-κB activation, restoration of antioxidant defenses, and correction of cell cycle dysregulation Conclusion DCP mitigates DILI by reducing apoptosis, oxidative stress, and inflammation through activation of the AMPK-FOXO3 pathway, inhibition of p53/NF-κB signaling, and stabilization of the cell cycle. These findings highlight DCP'S potential as a therapeutic agent for DILI prevention and treatment
研究领域:
药理学
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肝脏病学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
Journal of Oncology
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2022
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IF 4.501
Li Zheng,Yu Wu,Fu Wang,Hui Shi,Bo Xu,Aihua Yang
Objective. To study the pharmacological activity and the mechanism of action of natural compounds derived from 6,7-dimethoxycoumarin on the differentiation of human chronic myeloid leukemia K562 cells. Methods. We use MTT assay (Sigma-Aldrich, USA) to detect cell viability; use flow cytometry to analyze DNA content for cell cycle analysis; use benzidine staining to synthesize hemoglobin to determine K562 cell differentiation; use western blot analysis and qPCR to detect the expression levels of FOX03, P27, CDK4, and their phosphorylation; and use the AOBS laser scanning confocal system (Leica, Wetzlar, Germany) to analyze and quantify the number of positive green spots. The statistical methods used are one-way analysis of variance (ANOVA) and Dunnett’s test to analyze within and between groups. Results. In order to explore the effect of 6,7-dimethoxycoumarin on the differentiation of K562 cell erythrocytes, it was concluded that 6,7-dimethoxycoumarin promotes the differentiation of K562 cell erythrocytes; the proliferation of K562 cells was detected by MTT method, and the results showed that 6,7-dimethoxycoumarin can inhibit the proliferation of K562 cells; to evaluate the effect of 6,7-dimethoxycoumarin on the proliferation of K562 cells, the results showed that 6,7-dimethoxycoumarin increased the expression of FOXO3, P27, CDK4, and CDK65, and decreased the phosphorylation of CDK4 and CDK6 proteins. To further explore the effect of knocking out FOXO3 on cell differentiation, the results show that 6,7-dimethoxycoumarin can reduce the differentiation and proliferation of K562 cells by increasing the expression of FOXO3. Conclusion. This study extended the understanding of the pharmacological activity of 6,7-dimethoxycoumarin and may provide a potential new target for the treatment of chronic myelogenous leukemia. However, we still need to further study the specific molecular capabilities of 6.7 dimethylcoumarin to understand their possible capture mechanism.
研究领域:
肿瘤学
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血液学
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分子生物学
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药理学
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DOI
PubMed
高影响因子
Neural Regeneration Research
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2020
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IF 3.171
Shuo Zhang,Yan Ma,Juan Feng
Trans-(-)-ε-viniferin (ε-viniferin) has antioxidative and anti-inflammatory effects. It also has neuroprotective effects in Huntington’s disease by activating the SIRT3/LKB1/AMPK signaling pathway; however, it remains unknown whether ε-viniferin also has a neuroprotective role in Parkinson’s disease. A Parkinson’s disease cell model was induced by exposing SH-SY5Y cells to 3.0 μM rotenone for 24 hours, and cells were then treated with 1.0 μM ε-viniferin for 24 hours. Treatment with ε-viniferin upregulated SIRT3 expression, which promoted FOXO3 deacetylation and nuclear localization. ε-Viniferin also increased ATP production and decreased reactive oxygen species production. Furthermore, ε-viniferin treatment alleviated rotenone-induced mitochondrial depolarization and reduced cell apoptosis, and restored the expression of mitochondrial homeostasis-related proteins. However, when cells were transfected with SIRT3 or FOXO3 shRNA prior to rotenone and ε-viniferin treatment, these changes were reversed. The results from the present study indicate that ε-viniferin enhances SIRT3-mediated FOXO3 deacetylation, reduces oxidative stress, and maintains mitochondrial homeostasis, thus inhibiting rotenone-induced cell apoptosis. ε-Viniferin may therefore be a promising treatment strategy for Parkinson’s disease.
研究领域:
神经科学
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药理学
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
Cartilage
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2021
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IF 4.634
Zhaoxun Chen,Chen Zhao,Pengcheng Liu,Haohan Huang,Shuhong Zhang,Xiaoqing Wang
ObjectiveEmerging evidence has indicated that excessive reactive oxygen species (ROS) have detrimental effects on osteoarthritis (OA). This study aimed to elucidate the effects of melatonin (MT), an antioxidant indolamine secreted from the pineal gland, on chondrocyte senescence and cartilage degeneration, thereby clarifying the underlying mechanisms of ROS-induced OA pathogenesis.DesignHydrogen peroxide (H2O2) was used to induce oxidative stress in rat chondrocytes. ROS levels were evaluated using cytometry and immunofluorescence. Cell viability was detected using the Cell Counting Kit-8 (CCK-8) assay. Western blotting and qPCR (Quantiative Real-Time Polymerase Chain Reaction) were used to examine apoptosis and autophagy. For in vivo experiments, male Sprague-Dawley rats were randomly divided into a sham-operated group, DMM (destabilization of the medial meniscus) surgery group, and surgery groups that received melatonin. Knee joints were collected and stained for histological analysis.ResultsThe data demonstrated that melatonin treatment significantly suppressed H2O2-induced matrix degradation and apoptosis, and maintained mitochondrial redox homeostasis. In addition, an enhancement of autophagic flux was observed through western blotting. These findings corresponded with activation of the AMPK/Foxo3 signaling pathways upon melatonin treatment. Histological staining and transmission electron microscopy (TEM) micrographs also demonstrated that melatonin alleviated cartilage ossification and chondrocyte hypertrophy in vivo.ConclusionsOur results indicated that melatonin protected chondrocytes via mitochondrial redox homeostasis and autophagy. The effects of melatonin on senescence may apply to other age-related diseases. Thus, melatonin may have multiple potential therapeutic applications.
研究领域:
药理学
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细胞生物学
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风湿病学
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骨科
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产品关联
DOI
PubMed
高影响因子
DRUG AND CHEMICAL TOXICOLOGY
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2025
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IF 1.9
Aicun Tang,Luying Wei,Jiayi Gao,Zheng Zhang,Bingyu Xia,Xin Li,Qiuyu Lu
To analyze tadehaginoside (TA) for its effect on liver fibrosis and the associated mechanism. Mice with CCl4-mediated liver fibrosis were administered TA treatment for 6 weeks. Histopathological alterations in liver tissues were evaluated, and serum markers of hepatic injury, as well as the hepatic profibrotic gene and protein levels were detected. Transforming growth factor-β1 (TGF-β1) was adopted for inducing LX-2 cells. Following a 24-h TA intervention, we assessed pro-fibrotic gene and protein activation, proliferation and levels of TGF-β1-activated LX-2 cells. miR-155 and FOXO3 expressions were quantified in mice liver tissues and cells. The targeting relation of miR-155 with FOXO3 was verified. After regulating miR-155 and FOXO3 expression, the function of TA in cell activation, proliferation, and collagen accumulation was evaluated. The results indicated that TA treatment markedly alleviated CCl4-mediated mouse liver injury, inhibited collagen fiber deposition, and downregulated the hepatic pro-fibrotic gene and protein levels. Additionally, TA treatment suppressed TGF-β1-induced cell activation and proliferation, thus significantly reducing pro-fibrotic marker levels within cells. Furthermore, treatment with TA down-regulated miR-155 and up-regulated FOXO3 within CCl4-induced liver tissues as well as TGF-β1-induced cells. However, miR-155 overexpression or FOXO3 silencing partially mitigated the inhibition of TA against TGF-β1-mediated activation, proliferation, and fibrosis in cells. In conclusion, TA inhibits the activation of hepatic stellate cell (HSC) via miR-155/FOXO3 axis, thereby exerting its anti-hepatic fibrosis effect.
研究领域:
药理学
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分子生物学
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肝脏病学
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）