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Withaferin-A induced vimentin S56 phosphorylation dissociates NEDD9 signaling loop to regress progressive metastatic melanoma into lung adenocarcinoma
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-27 DOI: 10.1016/j.cbi.2024.111319
Ankith Sherapura , B.K. Kiran , G.S. Pavan Kumar , B.M. Siddesh , Prabhu Thirusangu , N. Suchetha Kumari , B.T. Prabhakar
Metastasis is complex and insidious type of disease involves multiple signaling nexus, which have implications in understanding disease pathogenesis. Treatment failure for metastatic cancer is frequently high due to aggressive adaptation of cancerous cells to invade to neighboring organs. Cytoskeleton intermediate filamentous protein Vimentin and scaffolding protein Neural precursor cell expressed Developmentally Down-regulated protein 9 (NEDD9) play a key role in metastatic events by regulating multiple metastatic events. Interaction between these proteins is necessary to promote metastatic progression. Withaferin A (WFA), a natural pharamacophore, known to target Vimentin to induce antitumor potential. However exact molecular mechanism still yet to be elucidated. We hypothesize, Vimentin-NEDD9 signaling nexus is necessary for metastatic progression and targeting this interwoven signaling loop with effective pharamacophore WFA halts metastatic progression of melanoma into lung. To elucidate the same, we carried out gene expression measurement through quantitative Reverses Transcription Polymerase Chain Reaction (qRT-PCR), Immunoblot and Immunohistochemistry. Assessment of interactive signaling by Co-immunoprecipitation, Immunofluorescence, Co-localization and Proximity ligation assay. Phosphorylation studies through transfection of phospho specific mutant constructs generated through site directed mutagenesis. WFA induced cellular behavioral changes by migration, invasion assays and Immunoblot analysis. The B16F10 induced mouse metastatic melanoma model to asses NEDD9-Vimentin expression and anti-metastasis induced by WFA. The results postulates, elevated levels and interaction between NEDD9-Vimentin proteins, have positive correlation in metastatic progression of melanoma into lung in both in-vitro and in-vivo condition, establishing it as therapeutic target. Pharmacologically, WFA targets this complex by extending its activity by not only inducing specific Serine 56 phosphorylation of Vimentin, also dissociates NEDD9 signaling loop to halt Epithelial-mesenchymal transition (EMT) and subsequent metastatic events. Eventually, modulation of the relevant metastatic genes E-Cadherin, N-Cadherin, SNAIL, MMP-2 & MMP-9 resulted in regression of metastatic melanoma progression to lung. The study validates WFA induced S56 phosphorylation is necessary to abrupt the NEDD9-Vimentin metastatic signaling complex to regress aggressive metastatic melanoma. The investigation emphasized more mechanistic approach of WFA. Understanding and targeting such integrative mechanical input in the tumor microenvironment will be a better therapeutic strategy to combat metastasis.
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引用次数: 0
Schwann cells exposed to articaine display distinct toxic pathways compared to lidocaine 与利多卡因相比,暴露于阿替卡因的许旺细胞显示出不同的毒性途径。
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-22 DOI: 10.1016/j.cbi.2024.111315
Gustavo H. Rodrigues da Silva , Luís F. Mendes , Gabriela Geronimo , Ludmilla D. de Moura , Juliana S. Ruas , Roger F. Castilho , Helon G. Cordeiro , Carmen V. Ferreira , Eneida de Paula , Iola F. Duarte
Articaine (ATC) has emerged as one of the most popular local anesthetics (LA) in dental clinics, despite its relatively recent introduction to the market. As a member of the amino-amide class of LA, ATC possesses unique features, including a thiophene ring and an ester group, which allow for its use at higher clinical concentrations. However, reports have indicated a higher incidence of paresthesia associated with ATC, though the underlying cause of this effect remains unclear. To investigate this further, we conducted an extracellular metabolic flux analysis and an NMR-based metabolomics study of ATC effects on Schwann cells - a type of glial cell found in the peripheral nervous system - in comparison to lidocaine (LDC), the “gold standard" LA in dentistry. The results showed that ATC had a more significant impact on Schwann cell oxygen consumption compared to LDC. Metabolomics profiling of Schwann cells revealed distinct metabolic alterations between the two treatments. Notably, ATC triggered elevated intracellular levels of various amino acids, including leucine, isoleucine, valine, phenylalanine, methionine, histidine, tyrosine, and glycine, which were not observed in LDC-treated Schwann cells. This was consistent with signs of endoplasmic reticulum stress and apoptosis in ATC-treated cells, as detected by protein expression analysis. These findings offer insights into the metabolic and cellular responses elicited by the two anesthetics in Schwann cells, that may help explain the differential toxicity and higher incidence of paresthesia associated with ATC.
阿替卡因(ATC)是牙科诊所中最受欢迎的局部麻醉剂(LA)之一,尽管它进入市场的时间相对较短。作为氨基酰胺类 LA 的一员,ATC 具有独特的特征,包括一个噻吩环和一个酯基,这使其可以在较高的临床浓度下使用。然而,有报告显示,ATC 会导致较高的麻痹发生率,但这种效应的根本原因仍不清楚。为了进一步研究这个问题,我们进行了细胞外代谢通量分析和基于核磁共振的代谢组学研究,比较 ATC 和牙科 "黄金标准 "LA--利多卡因(LDC)对许旺细胞(一种存在于外周神经系统的神经胶质细胞)的影响。结果表明,与 LDC 相比,ATC 对许旺细胞耗氧量的影响更为显著。对许旺细胞进行的代谢组学分析表明,两种治疗方法之间存在明显的代谢变化。值得注意的是,ATC 引发了细胞内各种氨基酸水平的升高,包括亮氨酸、异亮氨酸、缬氨酸、苯丙氨酸、蛋氨酸、组氨酸、酪氨酸和甘氨酸,而在 LDC 处理的许旺细胞中没有观察到这些变化。这与蛋白表达分析检测到的 ATC 处理细胞的内质网应激和细胞凋亡迹象一致。这些发现有助于深入了解两种麻醉剂在许旺细胞中引起的新陈代谢和细胞反应,从而有助于解释与 ATC 相关的不同毒性和较高的麻痹发生率。
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引用次数: 0
Nano-scale dangers: Unravelling the impact of nanoplastics on human trophoblast invasion 纳米级危险:揭示纳米塑料对人类滋养层侵入的影响。
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-22 DOI: 10.1016/j.cbi.2024.111317
Mirjana Nacka-Aleksić , Aleksandra Vilotić , Andrea Pirković , Marko Živanović , Biljana Ljujić , Milica Jovanović Krivokuća
Utilizing HTR-8/SVneo cells for in vitro modeling of human trophoblast invasion, we examined how different concentrations of 40 nm and 200 nm carboxylated polystyrene particles affect early-pregnancy trophoblast phenotype and function. We focused on migration and invasion, as critical processes in placental development. Our findings revealed disruptions in extravillous trophoblast mesenchymal phenotype and invasive behavior, following acute exposure to a higher concentration of the smaller sized particles. Specifically, differential uptake of the particles by trophoblast cells was observed, as well as cytotoxicity and concentration-dependent DNA damage after 72 h of exposure. In addition, a 24 h exposure to 100 μg/ml of 40 nm particles correlated with downregulated protein expression of α5 and α1 integrin subunits, N-cadherin, matrix metalloproteinase-2 and macrophage migration inhibitory factor, alongside upregulated protein expression of the epithelial marker E-cadherin. These changes likely contributed to the diminished migration of HTR-8/SVneo cells and the invasive potential of HTR-8/SVneo spheroids. Understanding these interactions is paramount for assessing the broader implications of nanoplastics on reproductive outcomes and maternal-fetal well-being and informing public health measures.
我们利用 HTR-8/SVneo 细胞建立了人类滋养细胞侵袭的体外模型,研究了不同浓度的 40 nm 和 200 nm 羧化聚苯乙烯颗粒如何影响妊娠早期滋养细胞的表型和功能。我们重点研究了迁移和侵袭这两个胎盘发育的关键过程。我们的研究结果表明,在急性暴露于较高浓度的较小尺寸颗粒后,绒毛外滋养层细胞间质表型和侵袭行为受到破坏。具体来说,滋养层细胞对颗粒的吸收存在差异,暴露72小时后,滋养层细胞会出现细胞毒性和浓度依赖性DNA损伤。此外,暴露于100微克/毫升的40纳米颗粒24小时后,α5和α1整合素亚基、N-粘连蛋白、基质金属蛋白酶-2和巨噬细胞迁移抑制因子的蛋白表达下调,而上皮标记物E-粘连蛋白的蛋白表达上调。这些变化可能是导致HTR-8/SVneo细胞迁移和HTR-8/SVneo球体侵袭潜力减弱的原因。了解这些相互作用对于评估纳米塑料对生殖结果和母胎健康的广泛影响以及为公共卫生措施提供信息至关重要。
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引用次数: 0
Chitooligosaccharide-epigallocatechin gallate conjugate ameliorates lipid accumulation and promotes browning of white adipose tissue in high fat diet fed rats 壳寡糖-表没食子儿茶素没食子酸酯共轭物可改善高脂饮食喂养大鼠的脂质积累并促进白色脂肪组织褐变
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-21 DOI: 10.1016/j.cbi.2024.111316
Kanokrada Tonphu , Sirikul Mueangaun , Natcha Lerkdumnernkit , Jirakhamon Sengking , Jiraporn Tocharus , Soottawat Benjakul , Ajay Mittal , Chainarong Tocharus
The prevalence of obesity has increased progressively worldwide. Obesity is characterized by excessive accumulation of fat in adipose tissues, leading to metabolic impairment. The anti-obese effects of chitooligosaccharide (COS) and epigallocatechin-3-gallate (EGCG) have been extensively clarified. This study aimed to investigate the effects and potential mechanisms of the COS-EGCG conjugate (CE) on anti-obesity, specifically by alleviating lipid accumulation and promoting the browning of white adipose tissue (WAT) in obese rats. Obesity as a consequence of a high-fat diet (HFD) was induced in male Wistar rats. The HFD was given for 16 weeks and the rats were then randomly subdivided into five groups namely: vehicle (control group), HFD plus CE at 150 mg/kg/day, HFD plus CE at 600 mg/kg/day, HFD plus COS at 600 mg/kg/day, and HFD plus atorvastatin at 10 mg/kg/day for 4 weeks. CE could reduce body weight, improve serum lipid profiles, and promote lipid metabolism via activation of AMP-activated protein kinase (AMPK) in WAT and enhance the processes of WAT browning by activating sirtuin 1 (Sirt 1), peroxisome proliferator-activated receptor-gamma coactivator (PGC1-α), and uncoupling the protein 1 (UCP1) signaling pathway. CE reduced obesity and promoted WAT browning in HFD-fed rats. Therefore, CE might be a new therapy for metabolic syndrome and obesity.
肥胖症的发病率在全球范围内逐步上升。肥胖症的特征是脂肪组织中脂肪堆积过多,导致代谢障碍。壳寡糖(COS)和表儿茶素-3-棓酸盐(EGCG)的抗肥胖作用已被广泛阐明。本研究旨在探讨壳寡糖-表没食子儿茶素-3-棓酸盐(EGCG)共轭物(COS-EGCG conjugate,CE)抗肥胖的作用和潜在机制,特别是通过减轻肥胖大鼠的脂质积累和促进白色脂肪组织(WAT)褐变。通过高脂饮食(HFD)诱导雄性 Wistar 大鼠肥胖。高脂饮食持续 16 周,然后将大鼠随机分为五组,即:载体组(对照组)、高脂饮食加 150 毫克/公斤/天的 CE 组、高脂饮食加 600 毫克/公斤/天的 CE 组、高脂饮食加 600 毫克/公斤/天的 COS 组和高脂饮食加 10 毫克/公斤/天的阿托伐他汀组,持续 4 周。CE可通过激活WAT中的AMP激活蛋白激酶(AMPK)来降低体重、改善血清脂质状况和促进脂质代谢,并通过激活sirtuin 1(Sirt 1)、过氧化物酶体增殖激活受体-γ辅助激活因子(PGC1-α)和解偶联蛋白1(UCP1)信号通路来增强WAT的褐变过程。CE能减轻高氟酸脂喂养大鼠的肥胖程度,并促进其脂肪褐变。因此,CE可能是治疗代谢综合征和肥胖症的一种新疗法。
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引用次数: 0
Glycerophospholipid metabolic disorders and gender difference of cantharidin-induced hepatotoxicity in rats: Lipidomics and MALDI mass spectrometry imaging analysis 甘油磷脂代谢紊乱与安乃近诱导的大鼠肝毒性的性别差异:脂质组学和 MALDI 质谱成像分析
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-17 DOI: 10.1016/j.cbi.2024.111314
Qiyi Wang , Weina Cheng , Tianmu He , Shan Li , Jingwen Ao , Yanmei He , Cancan Duan , Xiaofei Li , Jianyong Zhang
The hepatotoxicity mechanism of cantharidin (CTD), a major active component of Mylabris was explored based on liver lipidome alterations and spatial distributions in female and male rats using lipidomics and matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI). After oral CTD exposure, the livers of female rats were screened for 104 differential lipids including lysophosphatidylethanolamine(LysoPE)(20:2/0:0) and diacylglycerol(DG)(18:2/22:4), whereas the livers of male rats were screened for 76 differential lipids including fatty acid(FA)(24:6) and DG(18:0/22:4). According to the MALDI-MSI results, female rats exhibited 12 differential lipids with alteration in the abundance and spatial distribution of phosphatylcholine(PC), phosphatidylethanolamine(PE), lysophosphatidylcholine(LysoPC), and LysoPE in the liver lesion area. On the other hand, male rats exhibited 8 differential lipids with changes in the abundance and spatial distribution of PC, PE, and FA in the liver lesion area. The lipidomics- and MALDI-MSI-detected differential lipids strongly disrupted glycerophospholipid metabolism in both female and male rats. Additionally, phosphatidate phosphatase (Lipin1), choline/ethanolamine phosphotransferase 1 (CEPT1), and phosphatidylethanolamine N-methyltransferase (PEMT) were screened to distinguish CTD hepatoxicity in female and male rats. Western blotting analysis demonstrated a significant elevation in Lipin1 expression in female and male rat livers, accompanied by a decrease in PEMT expression. Furthermore, CEPT1 expression increased significantly in female rat livers and decreased significantly in male rat livers. These findings suggested that CTD could disrupt lipid metabolism in a gender-specific manner. Moreover, the combination of lipidomics and MALDI-MSI could offer valuable insights into CTD-induced hepatotoxicity in rats.
利用脂质组学和基质辅助激光解吸电离质谱成像(MALDI-MSI)技术,基于雌性和雄性大鼠肝脏脂质体的改变和空间分布,探讨了Mylabris的主要活性成分坎他利定(CTD)的肝毒性机制。口服CTD后,雌性大鼠肝脏中的溶血磷脂酰乙醇胺(LysoPE)(20:2/0:0)和二酰甘油(DG)(18:2/22:4)等104种差异脂质被筛查出来,而雄性大鼠肝脏中的脂肪酸(FA)(24:6)和二酰甘油(DG)(18:0/22:4)等76种差异脂质被筛查出来。根据 MALDI-MSI 的结果,雌性大鼠肝脏病变区域的磷脂酰胆碱(PC)、磷脂酰乙醇胺(PE)、溶血磷脂酰胆碱(LysoPC)和溶血磷脂酰乙醇胺(LysoPE)的丰度和空间分布发生了变化,显示出 12 种差异脂质。另一方面,雄性大鼠表现出 8 种不同的脂质,其中 PC、PE 和 FA 在肝脏病变区域的丰度和空间分布发生了变化。脂质组学和 MALDI-MSI 检测到的差异脂质强烈干扰了雌性和雄性大鼠的甘油磷脂代谢。此外,还对磷脂酰磷酸酶(Lipin1)、胆碱/乙醇胺磷酸转移酶1(CEPT1)和磷脂酰乙醇胺N-甲基转移酶(PEMT)进行了筛选,以区分雌性和雄性大鼠的CTD肝毒性。Western 印迹分析表明,雌性和雄性大鼠肝脏中 Lipin1 的表达显著升高,同时 PEMT 的表达降低。此外,CEPT1 在雌性大鼠肝脏中的表达明显增加,而在雄性大鼠肝脏中则明显减少。这些发现表明,CTD 能以性别特异性的方式破坏脂质代谢。此外,脂质组学和 MALDI-MSI 的结合可为了解 CTD 诱导的大鼠肝毒性提供有价值的信息。
{"title":"Glycerophospholipid metabolic disorders and gender difference of cantharidin-induced hepatotoxicity in rats: Lipidomics and MALDI mass spectrometry imaging analysis","authors":"Qiyi Wang ,&nbsp;Weina Cheng ,&nbsp;Tianmu He ,&nbsp;Shan Li ,&nbsp;Jingwen Ao ,&nbsp;Yanmei He ,&nbsp;Cancan Duan ,&nbsp;Xiaofei Li ,&nbsp;Jianyong Zhang","doi":"10.1016/j.cbi.2024.111314","DOIUrl":"10.1016/j.cbi.2024.111314","url":null,"abstract":"<div><div>The hepatotoxicity mechanism of cantharidin (CTD), a major active component of <em>Mylabris</em> was explored based on liver lipidome alterations and spatial distributions in female and male rats using lipidomics and matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI). After oral CTD exposure, the livers of female rats were screened for 104 differential lipids including lysophosphatidylethanolamine(LysoPE)(20:2/0:0) and diacylglycerol(DG)(18:2/22:4), whereas the livers of male rats were screened for 76 differential lipids including fatty acid(FA)(24:6) and DG(18:0/22:4). According to the MALDI-MSI results, female rats exhibited 12 differential lipids with alteration in the abundance and spatial distribution of phosphatylcholine(PC), phosphatidylethanolamine(PE), lysophosphatidylcholine(LysoPC), and LysoPE in the liver lesion area. On the other hand, male rats exhibited 8 differential lipids with changes in the abundance and spatial distribution of PC, PE, and FA in the liver lesion area. The lipidomics- and MALDI-MSI-detected differential lipids strongly disrupted glycerophospholipid metabolism in both female and male rats. Additionally, phosphatidate phosphatase <strong>(</strong>Lipin1), choline/ethanolamine phosphotransferase 1 (CEPT1), and phosphatidylethanolamine N-methyltransferase (PEMT) were screened to distinguish CTD hepatoxicity in female and male rats. Western blotting analysis demonstrated a significant elevation in Lipin1 expression in female and male rat livers, accompanied by a decrease in PEMT expression. Furthermore, CEPT1 expression increased significantly in female rat livers and decreased significantly in male rat livers. These findings suggested that CTD could disrupt lipid metabolism in a gender-specific manner. Moreover, the combination of lipidomics and MALDI-MSI could offer valuable insights into CTD-induced hepatotoxicity in rats.</div></div>","PeriodicalId":274,"journal":{"name":"Chemico-Biological Interactions","volume":"405 ","pages":"Article 111314"},"PeriodicalIF":4.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Delavinone elicits oxidative stress and triggers ferroptosis in colorectal cancer by inhibiting PKCδ-mediated phosphorylation of Nrf2 地拉韦酮通过抑制PKCδ介导的Nrf2磷酸化,在结直肠癌中引发氧化应激和铁变态反应。
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-17 DOI: 10.1016/j.cbi.2024.111312
Ya Zhang , Xiexiao Cai , Xiaojing Ma , Huanjuan Yan , Qifang Wu , Haibin Tong , Zhihai Zheng
Ferroptosis is a potential therapeutic approach for colorectal cancer (CRC). Studies have shown that peimine and its analogs exhibit anti-cancer potential; however, the intricate relationship between ferroptosis and their efficacy in fighting CRC remains unclear. In this study, we attempted to assess the therapeutic impact of peimine and its analogs on CRC and unravel the underlying mechanisms. CRC cells and a DSS/AOM-induced CRC mouse model were employed for in vitro and in vivo experiments, molecular interactions and co-immunoprecipitation were used to identify target proteins. Among the compounds, delavinone significantly inhibited CRC cell proliferation and increased cellular lipid ROS levels, MDA accumulation, and GSH depletion; the ferroptosis inhibitors DFO and Fer-1 ameliorated delavinone-induced cell death. Mechanistically, delavinone impedes PKCδ-mediated Nrf2 phosphorylation by inhibiting the kinase activity of PKCδ, thereby decreasing Nrf2 nuclear translocation and downstream GSH synthesis-related gene expression. overexpression of GPX4 weakened the anticancer effect of delavinone, underscoring delavinone's inhibition of the PKCδ/Nrf2/GPX4 signaling axis and induction of ferroptosis in CRC cells. Consistent with in vitro findings, delavinone notably hindered AOM/DSS-induced colorectal carcinogenesis, exhibiting a pronounced pro-ferroptosis effect on CRC. This study delineates that delavinone exerts its anticancer activity by inducing ferroptosis through PKCδ inhibition, consequently reducing Nrf2 phosphorylation. These findings position delavinone as a promising candidate for CRC treatment.
铁突变是治疗结直肠癌(CRC)的一种潜在方法。研究表明,培美因及其类似物具有抗癌潜力;然而,铁突变与它们抗击 CRC 的功效之间错综复杂的关系仍不清楚。在本研究中,我们试图评估培美因及其类似物对 CRC 的治疗效果,并揭示其潜在机制。研究采用了CRC细胞和DSS/AOM诱导的CRC小鼠模型进行体内外实验,并利用分子相互作用和共免疫沉淀来鉴定靶蛋白。在这些化合物中,地拉韦酮能显著抑制CRC细胞增殖,并增加细胞脂质ROS水平、MDA积累和GSH消耗;铁突变抑制剂DFO和Fer-1能改善地拉韦酮诱导的细胞死亡。从机理上讲,地拉韦酮通过抑制PKCδ的激酶活性阻碍了PKCδ介导的Nrf2磷酸化,从而降低了Nrf2的核转位和下游GSH合成相关基因的表达。GPX4的过表达削弱了地拉韦酮的抗癌作用,凸显了地拉韦酮对PKCδ/Nrf2/GPX4信号轴的抑制作用以及对CRC细胞铁蜕变的诱导作用。与体外研究结果一致,地拉韦酮明显阻碍了AOM/DSS诱导的结直肠癌发生,对CRC表现出明显的促铁细胞生成作用。这项研究表明,二黄酮通过抑制 PKCδ,从而降低 Nrf2 的磷酸化,诱导铁变态反应,从而发挥其抗癌活性。这些研究结果表明,地拉韦酮有望成为治疗 CRC 的候选药物。
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引用次数: 0
Copper oxide nanoparticles induced reactive oxygen species generation: A systematic review and meta-analysis 氧化铜纳米粒子诱导活性氧的生成:系统综述和荟萃分析。
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-15 DOI: 10.1016/j.cbi.2024.111311
Srimathi Murugesan, Satheeswaran Balasubramanian, Ekambaram Perumal
Copper oxide nanoparticles (CuO NPs) are widely employed in various industrial and biomedical applications owing to their enhanced physicochemical characteristics. However, concerns regarding their adverse effects on biological systems upon entering the environment remain unexplored. The generation of reactive oxygen species (ROS) is one of the primary mechanisms in CuO NPs induced toxicity. This meta-analysis was conducted to assess the associative link between CuO NPs exposure and ROS generation. A literature survey was performed in PubMed, Web of Science, Scopus, and Google Scholar, following PRISMA guidelines. After comprehensive initial and primary screening, 28 in vitro studies were selected for meta-analysis. Overall, our results show a substantial increase of ROS in the experimental group when compared to control (SMD = 3.3; 95 % CI: 2.82−3.77, p = 0.00001), with substantial heterogeneity (82 %). Subgroup analysis revealed that larger-sized NPs, higher dosages, and longer exposure duration were associated with ROS generation. Meta-regression analysis identified size, and dosage as significant factors influencing ROS levels. Sensitivity analysis revealed an outlier study and the funnel plot results suggested potential publication bias. Overall, our results provide valuable insights of CuO NPs induced ROS generation, and the relation of variables such as size, dose, and duration in nanotoxicity assessments.
氧化铜纳米粒子(CuO NPs)因其增强的物理化学特性而被广泛应用于各种工业和生物医学领域。然而,人们对其进入环境后对生物系统产生的不利影响仍有疑虑。活性氧(ROS)的产生是 CuO NPs 引发毒性的主要机制之一。本荟萃分析旨在评估氧化铜氧化物氮氧化物暴露与 ROS 生成之间的关联。按照 PRISMA 指南,在 PubMed、Web of Science、Scopus 和 Google Scholar 上进行了文献调查。经过全面的初步筛选和初选,选出了 28 项体外研究进行荟萃分析。总体而言,我们的结果显示,与对照组相比,实验组的 ROS 显著增加(SMD = 3.3;95% CI:2.82-3.77,p = 0.00001),异质性很大(82%)。亚组分析显示,较大尺寸的 NPs、较高的剂量和较长的暴露时间与 ROS 的产生有关。元回归分析发现,尺寸和剂量是影响 ROS 水平的重要因素。敏感性分析发现了一项离群研究,漏斗图结果表明可能存在发表偏差。总之,我们的研究结果对氧化铜氮氧化物诱导的 ROS 生成以及纳米毒性评估中大小、剂量和持续时间等变量之间的关系提供了有价值的见解。
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引用次数: 0
Exploring the nephrotoxicity and molecular mechanisms of Di-2-ethylhexyl phthalate: A comprehensive review 探索邻苯二甲酸二-2-乙基己酯的肾毒性和分子机制:全面综述。
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-15 DOI: 10.1016/j.cbi.2024.111310
Yun Liu , Xu Zhang , Ruhan Yi , Qing Tian , Jiawei Xu , Xinyu Yan , Jiaxuan Ma , Shaopeng Wang , Guang Yang
Di-2-ethylhexyl phthalate (DEHP), a widely applied plasticizer in various products, can be absorbed into the human body through several channels and accumulate in the lungs, liver, testes, and kidneys, potentially impairing the function of these organs. Recently, the nephrotoxicity of DEHP has received heightened attention. Numerous epidemiologic findings have demonstrated that DEHP exposure may contribute to renal damage, leading to structural and functional abnormalities and exacerbating the progression of kidney disease. Recent research has discovered the mechanisms behind DEHP-induced nephrotoxicity may involve a variety of pathways, including apoptosis, autophagy, ferroptosis, oxidative stress, inflammation, DNA damage, and lipid metabolism disorders. This review discusses the impact of DEHP on kidney function and delves into the molecular mechanisms of nephrotoxicity mediated by DEHP in recent years. In addition, the review examines evidence for the antioxidant and anti-inflammatory capacities of lycopene, green tea polyphenols, and quercetin in ameliorating DEHP-induced renal injury is reviewed, providing a basis for further research.
邻苯二甲酸二-2-乙基己酯(DEHP)是一种广泛应用于各种产品的增塑剂,可通过多种途径被人体吸收,并在肺部、肝脏、睾丸和肾脏中蓄积,可能损害这些器官的功能。最近,DEHP 的肾毒性受到了高度关注。大量流行病学研究结果表明,接触 DEHP 可能会造成肾脏损伤,导致结构和功能异常,加剧肾脏疾病的恶化。最新研究发现,DEHP 诱发肾毒性的机制可能涉及多种途径,包括细胞凋亡、自噬、铁变态反应、氧化应激、炎症、DNA 损伤和脂质代谢紊乱。本综述讨论了 DEHP 对肾功能的影响,并深入探讨了近年来 DEHP 介导的肾毒性分子机制。此外,综述还研究了番茄红素、绿茶多酚和槲皮素在改善 DEHP 引起的肾损伤方面的抗氧化和抗炎能力,为进一步的研究提供了依据。
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引用次数: 0
Biphasic effect of limonene on contraction of isolated rat aorta 柠檬烯对离体大鼠主动脉收缩的双相效应
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-15 DOI: 10.1016/j.cbi.2024.111313
Renata Evaristo Rodrigues da Silva , Luís Pereira-de-Morais , Andressa de Alencar Silva , Carla Mikevely de Sena Bastos , Emanuel Kennedy-Feitosa , Irwin Rose Alencar de Menezes , Daniel Weinreich , José Henrique Leal-Cardoso , Roseli Barbosa
Limonene, a monoterpene found in essential oils, has various activities, such as antifungal, antioxidant, neuroprotective, gastroprotective and vasorelaxant. However, the observation of limonene's biphasic effect in preclinical studies provides crucial information about its dose-dependent actions. Understanding this behavior is essential for optimizing therapeutic doses and anticipating possible side effects prior to clinical trials. The objective of this study is to provide a more detailed characterization and investigation of the mechanisms of action of limonene on the contractile tonus of isolated aorta.The experiments were carried out on aortic rings isolated from rats, subjected to isometric recording of contractions in their circular smooth muscle and exposed to different concentrations of limonene. It was found that limonene blocked the contraction induced by KCl (60 mM), but had a biphasic effect on the contraction induced by phenylephrine (0.1 μM). At lower concentrations, limonene was able to amplify the contraction induced by phenylephrine, while at higher concentrations, it inhibited it. The nitric oxide synthase blockers L-NAME and ruthenium red, a TRP ion channel blocker, did not significantly interfere with the biphasic character of limonene. However, indomethacin, a blocker of arachidonic acid derivatives, completely blocked the amplification of contraction induced by phenylephrine. In addition, limonene promoted relaxation in contractions induced by BAY-K 8644, a calcium channel agonist and by Ba2+. Limonene has complex effects on aortic tone, amplifying or inhibiting contractions, suggesting that the therapeutic window should be carefully studied to optimize clinical results.
柠檬烯是精油中的一种单萜,具有抗真菌、抗氧化、神经保护、胃肠保护和血管舒张等多种活性。然而,在临床前研究中观察到的柠檬烯的双相效应提供了有关其剂量依赖性作用的重要信息。在临床试验之前,了解这种行为对于优化治疗剂量和预测可能出现的副作用至关重要。本研究的目的是更详细地描述和研究柠檬烯对离体主动脉收缩力的作用机制。实验对象是从大鼠身上分离出的主动脉环,对其环状平滑肌进行等距收缩记录,并暴露于不同浓度的柠檬烯。实验发现,柠檬烯能阻止氯化钾(60 mM)引起的收缩,但对苯肾上腺素(0.1 μM)引起的收缩有双相作用。在较低浓度下,柠檬烯能放大苯肾上腺素诱导的收缩,而在较高浓度下,它则能抑制收缩。一氧化氮合酶阻断剂 L-NAME 和 TRP 离子通道阻断剂钌红对柠檬烯的双相特性没有明显干扰。然而,花生四烯酸衍生物阻断剂吲哚美辛完全阻断了苯肾上腺素诱导的收缩放大作用。此外,在钙通道激动剂 BAY-K 8644 和 Ba2+ 诱导的收缩中,柠檬烯能促进松弛。柠檬烯对主动脉张力有复杂的影响,可放大或抑制收缩,这表明应仔细研究治疗窗口,以优化临床效果。
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Special Issue: 21st International compendium: Enzymology and molecular biology of carbonyl metabolism 特刊:第 21 期国际汇编:羰基代谢的酶学和分子生物学。
IF 4.7 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2024-11-12 DOI: 10.1016/j.cbi.2024.111307
Natalia Y. Kedishvili (Managing Guest Editor)
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Chemico-Biological Interactions
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