BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
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2024
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IF 2.5
Mengyun Dong,Tianliang Zhang,Xueli Liang,Xinyi Cheng,Fuyan Shi,Hang Yuan,Fengxiang Zhang,Qiqi Jiang,Xia Wang
Sesamin, a special compound present in sesame and sesame oil, has been reported a role in regulating lipid metabolism, while the underlying mechanisms remain unclear. Autophagy has been reported associated with lipid metabolism and regarded as a key modulator in liver steatosis. The present work aimed to investigate whether sesamin could exert its protective effects against lipid accumulation via modulating autophagy in HepG2 cells stimulated with oleic acid (OA). Cell viability was evaluated using the CCK-8 method, and triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein, cholesterol (LDL-C), alanine aminotransferase (ALT), along with aspartate aminotransferase (AST) were assessed by oil red O staining, transmission electron microscopy (TEM), and biochemical kits to investigate the lipid-lowering effects of sesamin. Differentially expressed genes were screened by RNA sequencing and validated using real-time quantitative PCR and Western blot. Autophagy and mitophagy related molecules were analyzed employing TEM, Western blot, and immunofluorescence. The data shows that in HepG2 cells stimulated by OA, sesamin reduces levels of TG, TC, LDL-C, ALT, and AST while elevating HDL-C, alleviates the lipid accumulation and improves fatty acid metabolism through modulating the levels of fat metabolism related genes including PCSK9, FABP1, CD36, and SOX4. Sesamin restores the suppressed autophagy in HepG2 cells caused by OA, which could be blocked by autophagy inhibitors. This indicates that sesamin improves fatty acid metabolism by enhancing autophagy levels, thereby mitigating the intracellular lipid accumulation. Furthermore, sesamin significantly enhances the mitophagy and improves mitochondrial homeostasis via activating the PINK/Parkin pathway. These data suggest that sesamin alleviates the excessive lipid accumulation in HepG2 caused by OA by restoring the impaired mitophagy via the PINK1/Parkin pathway, probably playing a preventive or therapeutic role in hepatic steatosis.
研究领域:
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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代谢
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PubMed
高影响因子
Research
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2024
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IF 8.5
Pingjun Zhu,Xi Wang,Qingfeng Wu,Jianbo Zhu,Yifan Que,Yan Wang,Yongkai Ding,Yang Yang,Jie Jin,Xin Zhang,Qian Xu,Qinge Yong,Christopher Chang,Guogang Xu,Yingzhen Du
Background: B-cell receptor-associated protein 31 (BCAP31) has protective effects against alveolar epithelial type II cells (AECII) damage by inhibiting mitochondrial injury in acute lung injury (ALI) induced by lipopolysaccharide (LPS), whereas the precise mechanism is still unclear. It is known that PTEN-induced putative kinase 1 (PINK1)/Parkin-mediated mitophagy can remove damaged mitochondria selectively, which may be involved in BCAP31 protection against mitochondrial injury. Methods: In the current study, ALI mice models were established by using surfactant protein C (Sftpc)-BCAP31 transgenic mice (BCAP31TG mice) and AECII-specific BCAP31 knockout mice (BCAP31CKO mice) treated with LPS. Results: BCAP31 expression in lung tissue and AECII were inhibited in ALI mice. Under LPS challenge, lower level of BCAP31 was found to correlate positively with pathological injury of the lung, respiratory dysfunction, mortality rates, inflammation response, and AECII damage. Further study showed that down-regulation of BCAP31 induced decreased phosphorylation of PINK1 via reduced binding to PINK1, thereby restraining PINK1/Parkin-mediated mitophagy. Down-regulation of mitophagy promoted mitochondrial injury, as shown by the increase in mitochondrial permeability transition pore opening rate, together with enhanced mitochondrial reactive oxygen species (mROS), which were accompanied by increased cellular apoptosis and reactive oxygen species (ROS). The increased cellular ROS contributed to the inflammatory response via activation of nuclear factor κB (NF-κB). In contrast, BCAP31 overexpression promoted phosphorylation of PINK1 and PINK1/Parkin-mediated mitophagy, thus blocking the mROS/ROS/NF-κB pathway, favoring a protective condition that ultimately led to the inhibition of AECII apoptosis and inflammatory response in LPS-induced ALI. Conclusion: Ultimately, BCAP31 alleviated ALI by activating PINK1/Parkin-mediated mitophagy and blocking the mROS/ROS/NF-κB pathway in AECII.
研究领域:
免疫学
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肺病学
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细胞生物学
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分子生物学
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PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
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2023
·Vol. 103
·期 5
·2367-2377
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IF 4.1
Shun Chen,HuiJuan Liu,JiaQi Zhang,BinBin Zhou,XiaoFang He,Tian Wang,Chao Wang
BACKGROUND This study was conducted to investigate the effect of dietary rutin on the meat quality, antioxidant status and mitochondrial structure and function in the breast muscle of heat-stressed broilers. A total of 192 male broilers were randomly assigned into three groups and treated with normal control (CON), heat stress (34 °C, HS), and HS with 500 mg kg −1 rutin supplementation (HS + Rutin), respectively. RESULTS Dietary rutin significantly reversed HS-induced decrease in body weight, average daily feed intake, average daily gain, and feed efficiency. Rutin supplementation attenuated HS-induced impaired meat quality by decreasing the lightness, drip loss at 24 and 48 h, the peak time of free water ( T 22 ) and the peak area ratio of free water ( P 22 ), and increasing the pH 24h and peak area ratio of immobilized water ( P 21 ). Rutin supplementation promoted superoxide dismutase, glutathione peroxidase activities and total antioxidant capacity, and decreased malondialdehyde levels compared with the HS group. Moreover, rutin attenuated HS-induced mitochondrial damage by increasing the mitochondrial DNA copy number and improving mitochondrial morphology. Dietary rutin significantly increased mitochondrial biogenesis-related mRNA (proliferator-activated γ receptor coactivator-1α [PGC-1α], nuclear respiratory factor 1 [NRF1], and mitochondrial transcription factor A [TFAM]) expression via the AMP-activated protein kinase (AMPK) signaling pathway. HS significantly increased mitophagy-related genes and proteins (Parkin, PTEN-induced putative kinase 1 [PINK1], microtubule associated protein light chain 3-II [LC3-II]) expression, and dietary rutin significantly reversed these alterations. CONCLUSION Dietary rutin attenuated the HS-induced decline in meat quality and antioxidant capacity of broilers, which may be related to inhibition of the AMPK/PINK1–Parkin signaling pathway to attenuate mitochondrial damage. © 2023 Society of Chemical Industry.
研究领域:
动物科学
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营养学
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分子生物学
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PubMed
高影响因子
INTERNATIONAL IMMUNOPHARMACOLOGY
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2025
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IF 4.7
Rihong Luo,Yuhan Kang,He Ma,Zhenqiang Zhang,Christian Hölscher,Li Hao,Zijuan Zhang
To date, no therapeutic drugs available on the market can effectively reverse the progression of Alzheimer's disease (AD). Although Glucagon-like peptide-1 (GLP-1) receptor agonists (RAs) and Cholecystokinin (CCK) RAs have shown some promise in AD research, little is known about the neuroprotective effects of a novel dual CCK/GLP-1 RA in AD. This study sought to examine the effects of the novel dual CCK/GLP-1 RA on cognitive performance in an AD mouse model and to explore the associated mechanisms. Our findings indicate that dual CCK/GLP-1 RA improved cognitive deficits, reduced amyloid-beta (Aβ) accumulation, and alleviated mitochondrial damage in 5 × FAD mice by inducing mitophagy. In an in vitro model of AD cells induced by Aβ, CCK/GLP-1 RA could exert neuroprotective effects by regulating PINK1/Parkin-mediated mitophagy. These data reveal for the first time that the new CCK/GLP-1 RA modulates mitophagy via PINK1/Parkin pathway and enhances cognitive function in the 5 × FAD animal model. Moreover, the performance of the CCK/GLP-1 RA in certain indicators was superior to that of GLP-1 analogue liraglutide, suggesting that it may represent a more promising therapeutic option for AD.
研究领域:
神经科学
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药理学
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分子生物学
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PubMed
高影响因子
INTERNATIONAL IMMUNOPHARMACOLOGY
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2025
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IF 4.7
Yang Zhang,Deguo Xing,Yi Liu,Shiyu Sha,Yueying Xiao,Zhonghao Liu,Qingfeng Yin,Zengxin Gao,Wenguang Liu
Intervertebral disc degeneration (IVDD) is a chronic degenerative disease with a complex pathophysiological mechanism. Increasing evidence suggests that the NOD-like receptor thermal protein domain associated protein 3 (NLRP3)-mediated pyroptosis of nucleus pulposus cells (NPCs) plays a crucial role in the pathological progression of IVDD. Pyroptosis is a novel form of programmed cell death characterized by the formation of plasma membrane pores by gasdermin family proteins, leading to cell swelling, membrane rupture, and the release of inflammatory cytokines, which trigger an inflammatory response. The close relationship between pyroptosis and mitophagy has been previously described in various diseases, but the crosstalk between pyroptosis and mitophagy in IVDD remains unexplored. Cellular repressor of E1A-stimulated genes 1 (CREG1) is a secreted glycoprotein involved in cell differentiation and homeostasis regulation and has been shown to promote lysosomal biogenesis and function. However, the potential role and underlying mechanisms of CREG1 in the progression of IVDD have not yet been reported. In this study, we first observed that CREG1 is downregulated following IVDD and that pyroptosis occurs. Furthermore, CREG1 knockdown inhibited NPC proliferation and exacerbated apoptosis and degeneration. Moreover, we confirmed that CREG1 knockdown induced NLRP3 activation while also leading to mitophagy inhibition and mitochondrial dysfunction in NPCs. CREG1 overexpression ameliorated LPS-induced mitophagy inhibition and mitochondrial dysfunction by promoting PINK1/Parkin-mediated mitophagy, thereby suppressing NLRP3 inflammasome activation. However, these protective effects were reversed by pretreatment with the mitophagy inhibitor cyclosporin A (CsA). In a rat model of IVDD, imaging and histological assessments revealed that CREG1 overexpression effectively alleviated the progression of IVDD. Additionally, CREG1 overexpression reduced the expression of NLRP3, caspase-1, and IL-1β while increasing the expression of collagen II, PINK1 and LC3, delaying the course of IVDD. Overall, this study highlights the importance of the interplay between CREG1-mediated regulation of mitophagy and pyroptosis in the pathogenesis of IVDD, identifying CREG1 as a promising therapeutic target for IVDD treatment.
研究领域:
骨科
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细胞生物学
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分子生物学
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病理生理学
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PubMed
高影响因子
BIOCHEMICAL PHARMACOLOGY
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2024
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IF 5.3
Jia Xi Ye,Jia Ying Wu,Liang Ai,Min Zhu,Yun Li,Dong Yin,Qihui Huang
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by the significant involvement of amyloid-beta (Aβ) peptide in its pathogenesis. Geniposide, derived from the versatile medicinal of Gardenia jasminoides , is one of the active compounds studied extensively. The objective was to explore the impact of geniposide on Aβ 25-35 -induced damage in HT22 cells, specifically focusing on its modulation of PINK1/Parkin-mediated mitophagy. In our investigation, geniposide exhibited remarkable restorative effects by enhancing cell viability and preserving the mitochondrial membrane potential. Moreover, it effectively reduced and mitigated the oxidative stress and apoptosis rates induced by Aβ 25-35 . Notably, geniposide exhibited the capacity to enhance autophagic flux, upregulate LC3II and Beclin-1 expression, and downregulate the expression of p62. Furthermore, geniposide positively influenced the expression of PINK1 and Parkin proteins, with molecular docking substantiating a strong interaction between geniposide and PINK1/Parkin proteins. Intriguingly, the beneficial outcomes of geniposide on alleviating the pronounced apoptosis rates, the overproduction of reactive oxygen species, and diminished the PINK1 and Parkin expression induced by Aβ 25-35 were compromised by the mitophagy inhibitor cyclosporine A (CsA). Collectively, these findings suggested that geniposide potentially shields HT22 cells against neurodegenerative damage triggered by Aβ 25-35 through the activation of mitophagy. The insights contribute valuable references to the defensive consequences against neurological damage of geniposide, thereby highlighting its potential as a therapeutic intervention in AD.
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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分子生物学
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神经退行性疾病
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DOI
PubMed
高影响因子
International Journal of Nanomedicine
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2021
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IF 6.4
Xiaodi Gong,Xin Pu,Jing Wang,Linlin Yang,Yunxia Cui,Lijuan Li,Xiao Sun,Jichang Liu,Jingfeng Bai,Yudong Wang
Purpose Iron-based nanomaterials have recently been developed as excellent and potent Fenton reagents to reactive oxygen species (ROS) during chemodynamic therapy (CDT). The performance of the materials, however, can be impaired by the intrinsic antioxidant defense mechanism in organisms, such as autophagy. Methods The nanoscale metal-organic frameworks (nMOFs), nMIL-100 (Fe), were exploited and characterized. Also, the Fenton-like catalytic characteristics, anti-endometrial cancer (EC) effects and potential mechanisms of nMIL-100 (Fe) nanoparticles were investigated in vitro. Results The synthesized nMIL-100 (Fe) nanocatalyst catalyzed hydroxyl radicals (·OH) production in the presence of hydrogen peroxide (H 2 O 2 ) and simultaneously depleted intracellular glutathione (GSH). Combining with H 2 O 2 , nMIL-100 (Fe) nanoparticles exhibited enhanced cytotoxicity for EC cells, especially for progesterone treatment-insensitive KLE cells, probably due to relatively lower expression of the catalase gene. The accumulated ·OH initiated PTEN induced putative kinase 1 (PINK1)/E3 ubiquitin-protein ligase Parkin-mediated cytoprotective mitophagy in turn to partially rescue ·OH-induced cell apoptosis. Furthermore, both pretreatments of EC cells with siRNA-mediated Parkin knockdown and Mdivi-1 (a mitophagy inhibitor) addition were sufficient to ensure nMIL-100 (Fe) synergizing with H 2 O 2 -induced oxidative damages. Conclusion These results suggest that the degree of mitophagy should be taken into consideration to optimize therapeutic efficiency when developing ROS based-CDT for EC cancer therapies. Therefore, a nMIL-100 (Fe)-guided, elevated ROS and overwhelmed mitophagy-mediated therapeutic strategy may have greater promise for EC therapy compared with current treatment modalities.
研究领域:
纳米技术
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癌症研究
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细胞生物学
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治疗学
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肿瘤学
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PubMed
高影响因子
Food & Function
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2023
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IF 6.1
Dekun Cheng,Zhangtie Wang,Xin Guo,Yiwen Guo,Yu Zhang,Yuanhui Zhao,Ruijie Liu,Ming Chang
Dietary nutritional support for special populations is an effective and feasible method to improve quality of life of patients and reduce medical pressure. The effects of ATSO on chemotherapy population were evaluated by a zebrafish model of demyelination. The results showed that 100 μg/mL ATSO reversed tail morphology damage, axon degeneration, touch response delay, ROS level upregulation and the expression of myelin basic protein decrease in chemotherapy-induced zebrafish. In addition, the expression of myelin markers (including sox10, krox20, pmp22) in oxaliplatin-induced cells was markedly reversed by ATSO and its active components (gondoic acid, erucic acid, nervonic acid). ATSO and its active components could reverse demyelination by ameliorating mitochondrial dysfunction. Conversely, linoleic acid and linolenic acid promoted demyelination by exacerbating mitochondrial dysfunction. Moreover, the Pink1/Parkin pathway was recognized as the main reason for ATSO and its active components to improve mitochondrial function by activating mitophagy and restoring autophagic flow. Taken together, this study demonstrated that ATSO and its active components could be further developed as novel functional food ingredients to antagonize demyelination.
研究领域:
神经科学
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药理学
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营养学
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细胞生物学
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分子生物学
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DOI
PubMed
高影响因子
Reproductive Sciences
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2025
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IF 2.5
Ma Qianwen,Wu Lifei,Wu Jianfei,Ni Binfei,Wang Jiajia,Song Shiyan
Objective To investigate the mechanism in the progression of decreased ovarian reserve (DOR). Methods Three-month-old female SD rats were employed and randomly divided into the model group and the normal group. The model group was intraperitoneally injected with 4-vinylcyclohexene diepoxide (VCD). Thereafter, blood sample from the abdominal aorta was taken, and rats were sacrificed, and ovarian tissues were obtained by laparotomy. Results HE staining results revealed that the model group exhibited significantly reduced ovarian volume, increased follicular atresia, and decreased quantities of growing follicles and corpus luteum, thereby indicating degraded reserve function of ovarian. TEM images revealed that prominent autophagic vacuoles could be observed in the model group, accompanied by the mitochondria shrinkage and generation of the autophagosome. The expression of Pink1, Parkin, BNIP3L and LC3II genes in ovaries of the model group was significantly higher than those of the normal group ( P < 0.05). In addition, the protein expression of Pink1, Parkin, BNIP3L and LC3II in ovaries of the model group were higher than those of the normal group ( P < 0.05). The expression of Fe 2+ and GSH in oocytes of the model group was higher than those of the normal group ( P < 0.05). The expression of FTH1 and GPX4 in oocytes of the model group was significantly higher than those of the normal group ( P < 0.05). Conclusions Mitochondrial autophagy and ferroptosis may participate in the progression of decreased ovarian reserve (DOR).
研究领域:
生殖生物学
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细胞生物学
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医学
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PubMed
高影响因子
PHYTOMEDICINE
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2025
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IF 8.3
Qiyue Sun,Ronghua Zhao,Shuran Li,Weiqin Zhou,Jingsheng Zhang,Bo Pang,Shilan Ding,Lei Bao,Zihan Geng,Rui Xie,Dan Xie,Xiaolan Cui,Shanshan Guo,Jing Sun
Background Coronavirus has caused high-mortality viral pneumonia worldwide. The pathogenesis is characterized by hyperinflammatory reactions resulting from immune homeostasis dysregulation. Verbenalin, an iridoid glucoside derived from Verbena officinalis L ., is widely used in Traditional Chinese Medicine (TCM) clinical practice for its antioxidant, anti-inflammatory and antiviral properties. Purpose This study aimed to investigate the pharmacological effects and underlying mechanisms of verbenalin on coronavirus pneumonia both in vivo and in vitro. Methods A coronavirus pneumonia mouse model and macrophage injury models, including mouse alveolar macrophage cell line (MH-S) cells and primary macrophages, were established to initially confirm the antiviral effects of verbenalin. Time-resolved proteomic were then employed to uncover proteomic changes and identify potential therapeutic targets for coronavirus treatment. Subsequently, flow cytometry and Western blot were employed to investigate verbenalin's effects on NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3) inflammasome pathway. Additionally, the targeting regulation of phosphatase and tensin homolog-induced putative kinase 1 (PINK1) / E3 ubiquitin ligase Parkin (Parkin) pathway by verbenalin was validated through molecular docking, surface plasmon resonance (SPR), immunofluorescent staining, RNA interference (RNAi), and mitophagy inhibition both in vivo and in vitro. Results Verbenalin reduced cell injury and inflammation in Human coronavirus 229E (HCoV-229E)-infected macrophages and improved lung inflammation in mice. Proteomics analysis highlighted the roles of nucleotide-binding oligomerization domain (NOD)-like receptor signaling and mitophagy pathways in coronavirus pneumonia. Verbenalin bound strongly to PINK1 and Parkin proteins, increased mitochondrial membrane potential (MMP), decreased mitochondrial reactive oxygen species (mtROS) levels, reduced the opening of mitochondrial permeability transition pore (MPTP), maintained mitochondrial mass, promoted mitophagy flux, upregulated the expression of PINK1, Parkin, and microtubule-associated protein 1A/1B-light chain 3BII (LC3BII). Additionally, verbenalin inhibited the activation of the NLRP3 inflammasome and downregulated the expression of Interleukin-1 beta (IL-1β), cysteine aspartate-specific protease 1 (caspase-1), and gasdermin D (GSDMD) both in vivo and in vitro. Furthermore, treatment with a mitophagy inhibitor and RNAi attenuated the inhibitory effects of verbenalin on NLRP3 activation, confirming the involvement of the PINK1/Parkin/NLRP3 pathway in verbenalin's protective effects. Conclusion Verbenalin enhances PINK1/Parkin-mediated mitophagy to suppress NLRP3 activation, thereby promoting immune homeostasis and mitigating HCoV-229E-induced inflammation.
研究领域:
药理学
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免疫学
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病毒学
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PubMed
高影响因子
PHYTOTHERAPY RESEARCH
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2026
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IF 8.1
Yi-wen Qian,Yao Lu,Miao-miao Chang,Qian-qian Niu,Jia-xin Fan,Shi-ying Xing,Peng Li,Ling Liu
Cardiomyocyte senescence contributes to the progression of multiple cardiac diseases, with oxidative stress identified as a central pathophysiological mechanism. Previous animal experiments demonstrated that citronellal (CT), administered at 200 mg/kg in rats, exerted significant cardioprotective effects. However, the molecular mechanisms underlying these effects remain unclear. This study aimed to investigate the role of CT in mitigating myocardial senescence and to elucidate its mechanistic pathways. Doxorubicin-induced myocardial senescence mouse models and H9C2 cardiomyocyte senescence models were established. SA-β-gal staining, Western blotting, immunofluorescence, and immunohistochemistry were employed to evaluate senescence and oxidative stress markers. Network pharmacology analysis and molecular docking were conducted to predict CT targets. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses were performed to identify potential mechanisms of action. CT treatment significantly reduced myocardial oxidative stress levels, ameliorated senescent phenotypes in both in vivo and in vitro models, and enhanced mitophagy by activating the AMPKα-mediated PINK1/Parkin pathway. Bioinformatics analyses further supported the involvement of oxidative stress resistance and mitophagy regulation as central mechanisms underlying CT's cardioprotective effects. Citronellal effectively alleviates cardiomyocyte senescence by reducing oxidative stress and promoting mitophagy through activation of the AMPKα–PINK1/Parkin signaling pathway. These findings provide experimental evidence supporting CT as a promising cardioprotective agent and highlight a novel mechanism of action that may inform future therapeutic strategies for cardiac aging and related diseases.
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高影响因子
Cells
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2026
·Vol. 15
·期 2
·137
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IF 5.2
Wanting Zhang,Shihao Meng,Zhenzhen Hao,Xiaoshuang Zhu,Lingwei Cao,Qing Yuan,Bing Wang
Parkinson’s disease (PD) is a neurodegenerative disorder characterized by age-dependent degeneration of dopaminergic neurons in the substantia nigra, a process mediated by α-synuclein aggregation, mitochondrial dysfunction, and impaired proteostasis. While BAP31—an endoplasmic reticulum protein critical for protein trafficking and degradation—has been implicated in neuronal processes, its role in PD pathogenesis remains poorly understood. To investigate the impact of BAP31 deficiency on PD progression, we generated dopamine neuron-specific BAP31 conditional knockout with DAT-Cre (cKO) mice (Slc6a3cre-BAP31 fl/fl ) and subjected them to MPTP-lesioned Parkinsonian models. Compared to BAP31 fl/fl controls, Slc6a3cre-BAP31 fl/fl mice exhibited exacerbated motor deficits following MPTP treatment, including impaired rotarod performance, reduced balance beam traversal time, and diminished climbing and voluntary motor capacity abilities. BAP31 conditional deletion showed no baseline phenotype, with deficits emerging only after MPTP. Our results indicate that these behavioral impairments correlated with neuropathological hallmarks: decreased NeuN neuronal counts, elevated GFAP astrogliosis, reduced tyrosine hydroxylase levels in the substantia nigra, and aggravated dopaminergic neurodegeneration. Mechanistically, BAP31 deficiency disrupted mitochondrial homeostasis by suppressing the PINK1–Parkin mitophagy pathway. Further analysis revealed that BAP31 regulates PINK1 transcription via the transcription factor Engrailed Homeobox 1. Collectively, our findings identify BAP31 as a neuroprotective modulator that mitigates PD-associated motor dysfunction by preserving mitochondrial stability, underscoring its therapeutic potential as a target for neurodegenerative disorders.
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高影响因子
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