HT-29

HT - 29
  • 文章类型: Journal Article
    本研究深入研究了化学成分,抗氧化剂,和三种干食用豆的抗炎特性:黑色(BL),大北方(GN),和平托(PN)。豆子都湿透了,煮熟,并进行体外胃肠(GI)消化。BL豆表现出较高的胃(42%)和肠(8%)消化率。可溶性GI消化的级分(<3kDa)的比较评估显示GN豆表现出最高丰度的二肽(P<0.05)。BL豆级分显示三肽增加4倍(P<0.05)。BL和PN豆部分都富含必需游离氨基酸,黄酮醇,与GN豆相比,以及羟基苯甲酸的衍生物。所有的豆类都表现出减轻TNF-α诱导的促炎信号的能力;然而,BL豆部分在降低HT-29细胞中AAPH诱导的氧化应激方面最有效,其次是GN豆(P<0.05)。相比之下,用PN豆观察到低抗氧化作用。
    The present study delved into the chemical composition, antioxidant, and anti-inflammatory properties of three dry edible beans: Black (BL), Great Northern (GN), and Pinto (PN). The beans were soaked, cooked, and subjected to in vitro gastrointestinal (GI) digestion. BL bean exhibited significantly higher gastric (42%) and intestinal (8%) digestion rates. Comparative assessment of soluble GI-digested fractions (<3 kDa) revealed that the GN bean exhibited the highest abundance of dipeptides (P < 0.05). The BL bean fraction displayed a 4-fold increase in tripeptides (P < 0.05). Both BL and PN bean fractions are high in essential free amino acids, flavonols, and derivatives of hydroxybenzoic acid when compared to the GN bean. All the beans exhibited the ability to mitigate TNF-α-induced pro-inflammatory signaling; however, the BL bean fraction was the most effective at lowering AAPH-induced oxidative stress in HT-29 cells, followed by the GN bean (P < 0.05). In contrast, a low antioxidant effect was observed with PN beans.
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  • 文章类型: Journal Article
    背景:樟子藻变种。lingua(Cambess.)Eichler,杨柳科的一员,由于其多功能的治疗特性,在各种文化的传统医学中占有突出的地位。历史上,土著社区利用了植物的不同部分,包括树叶,吠叫,和根,解决各种各样的健康状况。樟子树的传统用途。语言包括胃肠道疾病的治疗,呼吸道感染,伤口愈合,炎症,还有胃溃疡.药理学研究证明了这种植物的抗菌作用,抗炎,抗氧化剂,镇痛药,胃保护,和免疫调节作用。这标志着关于其对溃疡性结肠炎的有效性的第一个科学验证报告。该报告旨在通过临床前实验确认这种植物的传统使用。
    目的:这项工作使用了来自C.sylvestrisvar的水提取物。lingua叶(AECs)评估大鼠和HT-29(人结直肠癌细胞系)模型中的急性抗溃疡性结肠炎功效。
    方法:为了确定AECs的次级代谢产物,进行了二极管阵列检测器(LC-DAD)的液相色谱研究。2,4,6-三硝基苯磺酸(TNBS,30mg/0.25mLEtOH30%v/v)用作灌肠剂,以引起急性结肠炎。花了三天的时间给卷心菜。通过管饲法以3、30和300mg/kg的剂量口服lingua提取物。使用相同的途径将蒸馏水递送至载体和初始组。在第四天处死动物后,肠组织进行组织学检查和生化测试的评估,如测量超氧化物歧化酶(SOD),还原型谷胱甘肽(GSH),过氧化氢酶(CAT),丙二醛(MDA),亚硝酸盐/硝酸盐,髓过氧化物酶(MPO)活性。此外,白细胞介素1β(IL-1β),肿瘤坏死因子α(TNF-α),和白细胞介素10(IL-10),在肠组织上进行。此外,采用MTT法评价AECs对HT-29细胞活力的影响。此外,我们进行了一项分子对接研究,以将一些潜在的靶蛋白与AECs中发现的已鉴定的化学物质进行比较.
    结果:LC-DAD分析确定了五种化合物(咖啡酸,鞣花酸,阿魏酸,没食子酸,和槲皮素)在AECs中。预先给药AECs(3;30;300mg/kg)和美沙拉嗪(500mg/kg)降低了宏观评分(55%,47%,45%,52%,p<0.001)和溃疡面积(70.3%,70.5%,57%,56%,p<0.001),分别。它也增加了SOD,GSH,和CAT活性(p<0.01),在降低MDA(p<0.001)的同时,亚硝酸盐/硝酸盐(p<0.05),与结肠炎组相比,MPO(p<0.001)活性。关于炎症标志物,观察到显著的调节:与结肠炎组相比,AECs(3,30和300mg/kg)降低IL-1β和TNF-α水平(p<0.001),并增加IL-10水平(p<0.001).HT-29细胞的活力被AECs抑制,IC50为195.90±0.01μg/mL(48小时)。在分子对接分析中,槲皮素,没食子酸,阿魏酸,咖啡酸,和鞣花酸表现出一致的结合亲和力,与3w3l(TLR8)和3ds6(MAPK14)复合物形成稳定的相互作用。
    结论:这些结果暗示肠粘膜,抗炎,和C.sylvestrisvar的抗氧化性能。舌叶提取物可能参与其对溃疡性结肠炎的治疗作用。计算机研究的结果表明槲皮素和鞣花酸分别与P38和TLR8相互作用的可能性,以一种有益的方式。
    BACKGROUND: Casearia sylvestris var. lingua (Cambess.) Eichler, a member of the Salicaceae family, holds a prominent place in traditional medicine across various cultures due to its versatile therapeutic properties. Historically, indigenous communities have utilized different parts of the plant, including leaves, bark, and roots, to address a wide array of health conditions. Traditional uses of C. sylvestris var. lingua encompasses the treatment of gastrointestinal disorders, respiratory infections, wound healing, inflammation, and stomach ulcers. Pharmacological studies have demonstrated the plant\'s antimicrobial, anti-inflammatory, antioxidant, analgesic, gastroprotective, and immunomodulatory effects. This signifies the first scientific validation report for C. sylvestris var. lingua regarding its effectiveness against ulcerative colitis. The report aims to affirm the traditional use of this plant through pre-clinical experiments.
    OBJECTIVE: This work uses an aqueous extract from C. sylvestris var. lingua leaves (AECs) to evaluate the acute anti-ulcerative colitis efficacy in rat and HT-29 (human colorectal cancer cell line) models.
    METHODS: To determine the secondary metabolites of AECs, liquid chromatography with a diode array detector (LC-DAD) study was carried out. 2,4,6-trinitrobenzenesulfonic acid (TNBS, 30 mg/0.25 mL EtOH 30% v/v) was used as an enema to cause acute colitis. Three days were spent giving the C. sylvestris var. lingua extract orally by gavage at dosages of 3, 30, and 300 mg/kg. The same route was used to deliver distilled water to the vehicle and naïve groups. After the animals were sacrificed on the fourth day, intestinal tissues were taken for histological examination and evaluation of biochemical tests such as those measuring superoxide dismutase (SOD), reduced glutathione (GSH), catalase (CAT), malondialdehyde (MDA), nitrite/nitrate, myeloperoxidase (MPO) activity. Additionally, interleukin 1 beta (IL-1β), tumor necrosis factor alpha (TNF-α), and interleukin 10 (IL-10), were conducted on the intestinal tissues. Additionally, an MTT assay was used to evaluate the effect of AECs on the viability of HT-29 cells. Additionally, a molecular docking study was carried out to compare some potential target proteins with identified chemicals found in AECs.
    RESULTS: LC-DAD analysis identified five compounds (caffeic acid, ellagic acid, ferulic acid, gallic acid, and quercetin) in AECs. Pre-administration of AECs (3; 30; 300 mg/kg) and mesalazine (500 mg/kg) reduced macroscopic scores (55%, 47%, 45%, and 52%, p < 0.001) and ulcerated areas (70.3%, 70.5%, 57%, and 56%, p < 0.001), respectively. It also increased SOD, GSH, and CAT activities (p < 0.01), while decreasing MDA (p < 0.001), nitrite/nitrate (p < 0.05), and MPO (p < 0.001) activities compared to the colitis group. Concerning inflammatory markers, significant modulations were observed: AECs (3, 30, and 300 mg/kg) lowered levels of IL-1β and TNF-α (p < 0.001) and increased IL-10 levels (p < 0.001) compared to the colitis groups. The viability of HT-29 cells was suppressed by AECs with an IC50 of 195.90 ± 0.01 μg/mL (48 h). During the molecular docking analysis, quercetin, gallic acid, ferulic acid, caffeic acid, and ellagic acid demonstrated consistent binding affinities, forming stable interactions with the 3w3l (TLR8) and the 3ds6 (MAPK14) complexes.
    CONCLUSIONS: These results imply that the intestinal mucogenic, anti-inflammatory, and antioxidant properties of the C. sylvestris var. lingua leaf extract may be involved in its therapeutic actions for ulcerative colitis. The results of the in silico study point to the possibility of quercetin and ellagic acid interacting with P38 and TLR8, respectively, in a beneficial way.
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  • 文章类型: Journal Article
    人类恶性肿瘤是全世界与健康相关的主要问题之一,并且预期在未来会上升。尽管在抗癌药物开发方面进行了大量投资,取得了有限的成功,每年FDA批准的平均数量正在下降。所以,人们对药物再利用越来越感兴趣。二甲双胍(MET)和阿司匹林(ASP)具有抗癌特性。这项工作旨在测试这两种药物的组合对体外结直肠癌(CRC)细胞的影响。MET和/或ASP对细胞增殖的影响,生存能力,迁移能力,非锚定生长能力(集落形成),在两种(HT-29和Caco-2)人CRC细胞系中确定营养吸收。个别地,MET和ASP具有抗增殖作用,细胞毒性,以及HT-29细胞中的抗迁移作用和减少的集落形成(BRAF-和磷脂酰肌醇-4,5-二磷酸3-激酶催化亚基α(PI3KCA)-突变体),虽然MET不影响3H-脱氧-D-葡萄糖或14C-丁酸盐的摄取和乳酸的产生,ASP仅引起14C-丁酸盐吸收的少量减少。此外,在这些细胞中,MET和ASP的组合导致细胞毒性作用增加和集落形成抑制作用增强的趋势,虽然没有附加的抗增殖和抗增殖作用,对养分吸收和乳酸产生没有影响。相比之下,MET和ASP,无论是单独还是组合,对Caco-2细胞几乎没有作用(BRAF-和PI3KCA-野生型)。我们认为抑制PI3K是两种MET的抗CRC作用的共同机制。ASP及其组合,因此,MET+ASP的组合可能特别有益于PI3KCA-突变型CRC病例,目前预后较差。
    Human malignancies are one of the major health-related issues throughout the world and are anticipated to rise in the future. Despite huge investments made in anticancer drug development, limited success has been obtained and the average number of FDA approvals per year is declining. So, an increasing interest in drug repurposing exists. Metformin (MET) and aspirin (ASP) possess anticancer properties. This work aims to test the effect of these two drugs in combination on colorectal cancer (CRC) cells in vitro. The effects of MET and/or ASP on cell proliferation, viability, migratory ability, anchorage-independent growth ability (colony formation), and nutrient uptake were determined in two (HT-29 and Caco-2) human CRC cell lines. Individually, MET and ASP possessed antiproliferative, cytotoxic, and antimigratory effects and reduced colony formation in HT-29 cells (BRAF- and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PI3KCA)-mutant), although MET did not affect either 3H-deoxy-D-glucose or 14C-butyrate uptake and lactate production, and ASP caused only a small decrease in 14C-butyrate uptake. Moreover, in these cells, the combination of MET and ASP resulted in a tendency to an increase in the cytotoxic effect and in a potentiation of the inhibitory effect on colony formation, although no additive antiproliferative and antimigratory effects, and no effect on nutrient uptake and lactate production were observed. In contrast, MET and ASP, both individually and in combination, were almost devoid of effects on Caco-2 cells (BRAF- and PI3KCA-wild type). We suggest that inhibition of PI3K is the common mechanism involved in the anti-CRC effect of both MET, ASP and their combination and, therefore, that the combination of MET + ASP may especially benefit PI3KCA-mutant CRC cases, which currently have a poor prognostic.
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  • 文章类型: Journal Article
    对食源性病原体与人类健康之间相互作用的研究,特别是它们对肠细胞的影响,至关重要。乳酸菌(LAB)在促进肠道菌群健康平衡中的重要性,抑制有害细菌,和支持整体胃肠道健康变得越来越明显。
    我们的研究探讨了发酵伍德福迪亚(WF)的影响,一种以抗胃肠道病原体的抗菌特性而闻名的植物,与LAB我们专注于这种发酵过程对食源性病原体与肠道衬里和细胞因子产生的结合的影响,旨在增强肠道健康并控制HT-29细胞中的食源性感染。
    发酵后,当与不同的LAB菌株组合时,WF表现出改善的抗菌作用。值得注意的是,与未发酵的对照相比,LAB发酵的WF(WFLC)大大降低了病原体的附着,例如单核细胞增生李斯特菌(6.87%±0.33%)和副溶血性弧菌(6.07%±0.50%)。此外,发现WFLC在存在病原体如大肠杆菌O157:H7(10.6%)和单核细胞增生李斯特菌(19%)的情况下上调IL-6的产生,表明它可能会激活免疫反应。因此,LAB发酵的WF成为对抗食源性病原体的潜在新策略,尽管需要更多的研究来彻底阐明WF的植物化学特征及其对这些有益结果的贡献。
    UNASSIGNED: The study into the interplay between foodborne pathogens and human health, particularly their effects on intestinal cells, is crucial. The importance of lactic acid bacteria (LAB) in promoting a healthy balance of gut microbiota, inhibiting harmful bacteria, and supporting overall gastrointestinal health is becoming more apparent.
    UNASSIGNED: Our study delved into the impact of fermenting Woodfordia fruticosa (WF), a plant known for its antimicrobial properties against gastrointestinal pathogens, with LAB. We focused on the influence of this fermentation process on the binding of foodborne pathogens to the gut lining and cytokine production, aiming to enhance gut health and control foodborne infections in HT-29 cells.
    UNASSIGNED: Post-fermentation, the WF exhibited improved antimicrobial effects when combined with different LAB strains. Remarkably, the LAB-fermented WF (WFLC) substantially decreased the attachment of pathogens such as L. monocytogenes (6.87%  ±  0.33%) and V. parahaemolyticus (6.07%  ±  0.50%) in comparison to the unfermented control. Furthermore, WFLC was found to upregulate IL-6 production in the presence of pathogens like E. coli O157:H7 (10.6%) and L. monocytogenes (19%), suggesting it may activate immune responses. Thus, LAB-fermented WF emerges as a potential novel strategy for fighting foodborne pathogens, although additional studies are warranted to thoroughly elucidate WF\'s phytochemical profile and its contribution to these beneficial outcomes.
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  • 文章类型: Journal Article
    小檗属(小檗科)是一种灌木,已在欧洲民间医学中广泛用作抗炎和抗菌剂。我们研究的目的是阐明植物的甲醇根提取物(BVR)对结肠癌细胞的化学预防作用的机制。在人结肠腺癌细胞系(LS180和HT-29)和对照结肠上皮CCD841CoN细胞中进行研究。根据MTT测定,细胞暴露48小时后,LS180、HT-29和CCD841CoN细胞的IC50值如下:4.3、46.1和50.2µg/mL,分别,显示癌细胞对BVR更敏感。细胞死亡检测ELISAPLUS试剂盒证明BVR仅针对HT-29细胞诱导程序性细胞死亡。核双染色显示HT-29细胞中的促凋亡BVR特性和LS180细胞中的微妙作用。使用相对定量方法的RT-qPCR显示LS180和HT-29细胞中与凋亡相关的基因表达的显着变化。基因BCL2L1(126.86-421.43%),BCL2L2(240-286.02%),CASP3(177.19-247.83%),CASP9(157.99-243.75%)表达显著升高,而与未处理的对照相比,BCL2(25-52.03%)具有降低的表达。此外,在一组抗氧化剂测试中,BVR显示出积极作用(DPPH•中的63.93±0.01、122.92±0.01和220.29±0.02mgTrolox当量(TE)/g,ABTS•+,和ORAC检测,分别)。在脂氧合酶(LOX)抑制试验中,BVR显示62.60±0.87%的酶抑制作用。使用UHPLC-UV-CAD-MS/MS分析确定BVR的化学组成,并确认存在几种已知的生物碱,包括小檗碱,以及其他生物碱和羟基肉桂酸的两种衍生物(阿魏酸和芥子酸己糖苷)。结果非常有希望,并鼓励使用BVR作为综合化学预防剂(抗炎,抗氧化剂,和促凋亡)在结直肠癌中,并与文献中的数据一起进行了广泛的讨论。
    Berberis vulgaris L. (Berberidaceae) is a shrub that has been widely used in European folk medicine as an anti-inflammatory and antimicrobial agent. The purpose of our study was to elucidate the mechanisms of the chemopreventive action of the plant\'s methanolic root extract (BVR) against colon cancer cells. Studies were conducted in human colon adenocarcinoma cell lines (LS180 and HT-29) and control colon epithelial CCD841 CoN cells. According to the MTT assay, after 48 h of cell exposure, the IC50 values were as follows: 4.3, 46.1, and 50.2 µg/mL for the LS180, HT-29, and CCD841 CoN cells, respectively, showing the greater sensitivity of the cancer cells to BVR. The Cell Death Detection ELISAPLUS kit demonstrated that BVR induced programmed cell death only against HT-29 cells. Nuclear double staining revealed the great proapoptotic BVR properties in HT-29 cells and subtle effect in LS180 cells. RT-qPCR with the relative quantification method showed significant changes in the expression of genes related to apoptosis in both the LS180 and HT-29 cells. The genes BCL2L1 (126.86-421.43%), BCL2L2 (240-286.02%), CASP3 (177.19-247.83%), and CASP9 (157.99-243.75%) had a significantly elevated expression, while BCL2 (25-52.03%) had a reduced expression compared to the untreated control. Furthermore, in a panel of antioxidant tests, BVR showed positive effects (63.93 ± 0.01, 122.92 ± 0.01, and 220.29 ± 0.02 mg Trolox equivalents (TE)/g in the DPPH•, ABTS•+, and ORAC assays, respectively). In the lipoxygenase (LOX) inhibition test, BVR revealed 62.60 ± 0.87% of enzyme inhibition. The chemical composition of BVR was determined using a UHPLC-UV-CAD-MS/MS analysis and confirmed the presence of several known alkaloids, including berberine, as well as other alkaloids and two derivatives of hydroxycinnamic acid (ferulic and sinapic acid hexosides). The results are very promising and encourage the use of BVR as a comprehensive chemopreventive agent (anti-inflammatory, antioxidant, and pro-apoptotic) in colorectal cancer, and were widely discussed alongside data from the literature.
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  • 文章类型: Journal Article
    结直肠癌(CRC)是世界上癌症相关死亡的第二大原因,化疗,作为CRC治疗的重要组成部分,有一些缺点,包括全身毒性。因此,发现新的更有效的CRC治疗方案至关重要.大黄(R.horasanicum)是一种具有高类黄酮的药用植物,二苯乙烯,和蒽醌含量,因此它可能是抗氧化剂的潜在来源,可用于治疗目的并引发癌细胞凋亡。在这项研究中,我们研究了罗氏酵母水醇根提取物对诱导HT-29和Caco-2人结直肠腺癌细胞线粒体凋亡的影响。首先,测定总酚和黄酮含量。然后,K.对三种不同类型细胞的细胞毒作用,使用MTT测定评估包括HT-29和Caco-2结肠癌细胞以及正常3T3细胞。为了研究细胞死亡的特征,流式细胞术,并进行了蛋白质印迹。这项研究的结果表明,呼罗兰中相当多的酚类(356.4±9.4GAE/gDW)和类黄酮(934.55±17.1QE/gDW)含量。MTT分析的发现表明,100、60和30µg/mL浓度的霍拉西氏菌可显著降低HT-29和Caco-2细胞系中的细胞活力(P<0.05)。还揭示了在这些细胞系中,罗氏菌提取物诱导细胞凋亡而不是坏死。此外,Bcl-2在HT-29和Caco-2细胞系中的表达显著降低,而Bax和裂解的caspase-3的表达在霍氏弧菌治疗下显著飙升(P<0.05)。总之,我们的研究结果表明,高含量的horasanicum根提取物可能在HT-29和Caco-2结肠癌细胞的细胞毒性和凋亡诱导中起重要作用。
    Colorectal cancer (CRC) is the second greatest cause of cancer-related death in the world and chemotherapy, as an important part of CRC treatment, has some drawbacks, including systemic toxicity. Therefore, it is crucial to discover new and more effective CRC treatment plans. Rheum khorasanicum (R. khorasanicum) is a medicinal plant with high flavonoids, stilbenes, and anthraquinone contents, so it can be a potential source of antioxidants and can be used for therapeutic purposes and trigger apoptosis in cancer cells. In this study, we investigated the effects of hydroalcoholic root extract of R. khorasanicum treatment on inducing mitochondrial apoptosis of HT-29 and Caco-2 human colorectal adenocarcinoma cells. Firstly, the total phenolic and flavonoid content was determined. Then, the cytotoxic effects of R. khorasanicum on cells of three different types, including HT-29 and Caco-2 colon cancer cells as well as normal 3T3 cells were assessed using the MTT assay. To investigate the characteristics of cellular death, flow cytometry, and western blotting were performed. The results of this study indicated considerable phenolic (356.4±9.4 GAE/gDW) and flavonoid (934.55±17.1 QE/gDW) contents in R. khorasanicum. MTT assay\'s finding indicated that 100, 60, and 30μg/mL concentrations of R. khorasanicum reduce cell viability in HT-29 and Caco-2 cell lines significantly (P<0.05). It has been also revealed that R. khorasanicum extract induces apoptosis rather than necrosis in these cell lines. Moreover, Bcl-2 expression was significantly reduced in both HT-29 and Caco-2 cell lines, while Bax and cleaved caspase-3 expression soared considerably in the groups under R. khorasanicum treatment (P<0.05). In conclusion, our findings have suggested that high phenol and flavonoid contents of R. khorasanicum root extract possibly play an important role in cell cytotoxicity and apoptosis induction in HT-29 and Caco-2 colon cancer cells.
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  • 文章类型: Journal Article
    八种以前没有描述的二萜,连同先前报道的11种类似物,是从香菇种皮的超临界CO2提取物中获得的。基于HRESIMS阐明了这些化合物的结构,NMR,ECD,和单晶X射线衍射数据。在MTT试验中,化合物18对两种人结肠癌细胞系表现出显著的抑制作用,HT-29和HCT116细胞,IC50值为7.37μM和6.55μM,分别。发现化合物18以浓度依赖性方式诱导HCT116结肠癌细胞凋亡并显著抑制其迁移。
    Eight previously undescribed diterpenoids, along with eleven previously reported analogues, were obtained from the supercritical CO2 extracts of Torreya grandis aril. The structures of these compounds were elucidated based on HRESIMS, NMR, ECD, and single-crystal X-ray diffraction data. In the MTT assay, compound 18 exhibited significant inhibitory effects on two human colon cancer cell lines, HT-29 and HCT 116 cells, with IC50 values of 7.37 μM and 6.55 μM, respectively. It was found that compound 18 induced apoptosis and significantly inhibited the migration of HCT 116 colon cancer cells in a concentration-dependent manner.
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  • 文章类型: Journal Article
    考虑到癌症中的众多耐药性和纳米医学科学的进步,决定比较氧化锌纳米颗粒在结肠和前列腺细胞系中的有效性。考虑到因素和氧化应激途径在癌症预防中的重要性,这项研究的目的是基于氧化应激机制。
    为了评估氧化锌纳米颗粒对结肠和前列腺细胞系的影响,氧化应激因子ROS,MDA,并对GSH和线粒体功能进行评价。数据用Prismv8软件进行分析,显著性水平为P<0.05。
    结果表明,纳米颗粒通过破坏和破坏线粒体功能来诱导ROS并减少细胞内谷胱甘肽,通过增加ROS产量,脂质膜的损伤和MDA的增加也很明显。这种作用是剂量依赖性的,并且在25μg/mL的浓度下最大。此外,ZnO纳米颗粒在HT29细胞系中的表现优于在PC3细胞系中的表现。
    这项研究表明,将HT29和PC3癌细胞暴露于不同浓度的氧化锌纳米颗粒通过细胞毒性作用抑制了生长。
    UNASSIGNED: Considering the numerous drug resistance in cancer and the advancement of science in nanomedicines, it was decided to compare the effectiveness of zinc oxide nanoparticles in colon and prostate cell lines. Considering the importance of factors and Oxidative stress pathways in cancer prevention, the aim of the study is based on oxidative stress mechanisms.
    UNASSIGNED: In order to evaluate the effects of zinc oxide nanoparticles on colon and prostate cell lines, oxidative stress factors ROS, MDA, and GSH and mitochondrial function were evaluated. The data was analyzed with Prism v8 software, and the significance level was considered to be P < 0.05.
    UNASSIGNED: The results showed that nanoparticles induce ROS and reduce intracellular glutathione by destroying and disrupting mitochondrial function, and by increasing ROS production, damage to the lipid membrane and an increase in MDA were also evident. This effect was dose-dependent and the greatest at a concentration of 25 μg/mL. Also, ZnO nanoparticles performed better in the HT29 cell line than in the PC3 cell line.
    UNASSIGNED: This study showed that exposure of HT29 and PC3 cancer cells to zinc oxide nanoparticles at different concentrations inhibited growth by cytotoxic effects.
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  • 文章类型: Journal Article
    为了克服体外二维(2D)癌症模型在模仿天然肿瘤环境的复杂性方面的局限性,已经引入了使用仿生材料的三维(3D)工程癌症模型,以更紧密地概括肿瘤微环境的关键属性。具体来说,对于结直肠癌(CRC),一些研究已经开发了3D工程肿瘤模型来研究细胞-细胞相互作用或抗癌药物的疗效.然而,尚未系统地研究3D工程基质中CRC细胞系表型差异的概述。这里,我们使用天然合成的混合生物材料PEG-纤维蛋白原和三种CRC细胞系开发了体外3D工程CRC(3D-eCRC)组织模型,HCT116、HT-29和SW480。为了更好地概括天然肿瘤状况,与先前报道的体外CRC模型相比,我们的3D-eCRC模型支持更高的细胞包封密度(20×106个细胞/mL),并且能够实现更长期的维持(29天).使用每种细胞系形成的3D-eCRC在细胞和组织特性方面表现出依赖于线的差异。包括细胞生长和形态,细胞亚群,细胞大小,单元格粒度,迁移模式,组织生长,基因表达,和组织硬度。重要的是,发现这些差异在第22天至第29天最为突出,这表明长期培养工程化CRC组织对于重述和研究机制差异和药物反应的重要性.我们的3D-eCRC组织模型显示出支持未来疾病进展的体外比较研究的高潜力,转移机制,和以CRC细胞系依赖性方式的抗癌药物候选反应。
    To overcome the limitations of in vitro two-dimensional (2D) cancer models in mimicking the complexities of the native tumor milieu, three-dimensional (3D) engineered cancer models using biomimetic materials have been introduced to more closely recapitulate the key attributes of the tumor microenvironment. Specifically, for colorectal cancer (CRC), a few studies have developed 3D engineered tumor models to investigate cell-cell interactions or efficacy of anti-cancer drugs. However, recapitulation of CRC cell line phenotypic differences within a 3D engineered matrix has not been systematically investigated. Here, we developed an in vitro 3D engineered CRC (3D-eCRC) tissue model using the natural-synthetic hybrid biomaterial PEG-fibrinogen and three CRC cell lines, HCT 116, HT-29, and SW480. To better recapitulate native tumor conditions, our 3D-eCRC model supported higher cell density encapsulation (20 × 106  cells/mL) and enabled longer term maintenance (29 days) as compared to previously reported in vitro CRC models. The 3D-eCRCs formed using each cell line demonstrated line-dependent differences in cellular and tissue properties, including cellular growth and morphology, cell subpopulations, cell size, cell granularity, migration patterns, tissue growth, gene expression, and tissue stiffness. Importantly, these differences were found to be most prominent from Day 22 to Day 29, thereby indicating the importance of long-term culture of engineered CRC tissues for recapitulation and investigation of mechanistic differences and drug response. Our 3D-eCRC tissue model showed high potential for supporting future in vitro comparative studies of disease progression, metastatic mechanisms, and anti-cancer drug candidate response in a CRC cell line-dependent manner.
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  • 文章类型: Journal Article
    由于其对当前疗法的新兴抵抗,结肠癌仍然是最难治疗的癌症之一。银色,一种非侵入性金属,以其抗菌和抗癌特性而闻名。两种新颖的银(I)膦配合物,[二苯基-2-吡啶基膦银(I)]Br(1)和[银(I)是4-(二甲基氨基)苯基二苯基膦]Br(2),合成并通过元素分析表征,红外光谱,和核磁共振(1H,13C,31P)。为了评估复合物作为抗增殖剂的潜力,实验是在体外对人大肠癌细胞(HT-29)进行的。评估涉及形态变化的分析,alamarBlue®增殖试验的性能,以及进行流式细胞术分析以检测线粒体改变。复合物1对恶性HT-29细胞表现出优异的选择性和显着的抑制作用,同时对两种非恶性HEK-293和MRHF细胞表现出最小的毒性。此外,治疗24小时后,与复合物2(IC50,21.75µM)和CDDP(IC50,200.96µM)相比,复合物1(IC50,7.49µM)在抑制细胞增殖方面表现出更高的功效。流式细胞术研究表明,复合物1诱导调节细胞死亡,可能通过线粒体介导的细胞凋亡。用复合物1处理诱导的指示细胞凋亡的形态学变化,其中包括膜起泡,PS外部化,活性氧(ROS)和线粒体膜去极化(ΔkWm)水平升高。这些观察结果表明,复合物1靶向线粒体,有望作为一种新型的基于金属的抗癌治疗剂,用于选择性治疗结直肠癌。
    Due to its emerging resistance to current therapies, colon cancer remains one of the most difficult types of cancer to treat. Silver, a non-invasive metal, is well-known for its antimicrobial and anti-cancer properties. Two novel silver(I) phosphine complexes, [silver(I) diphenyl-2-pyridylphosphine]Br (1) and [silver(I) is 4-(dimethylamino)phenyldiphenylphosphine]Br (2), were synthesized and characterized by elemental analysis, infrared spectroscopy, and nuclear magnetic resonance (1H, 13C, 31P). To assess the complexes\' potentials as antiproliferative agents, experiments were conducted on human colorectal cancer cells (HT-29) in vitro. The evaluation involved the analysis of morphological changes, the performance of an alamarBlue® proliferation assay, and the undertaking of flow cytometric analyses to detect mitochondrial alterations. Complex 1 displayed superior selectivity and significant inhibitory effects on malignant HT-29 cells while exhibiting minimal toxicity towards two non-malignant HEK-293 and MRHF cells. Moreover, after 24 h of treatment, complex 1 (IC50, 7.49 µM) demonstrated higher efficacy in inhibiting cell proliferation compared with complex 2 (IC50, 21.75 µM) and CDDP (IC50, 200.96 µM). Flow cytometric studies indicated that complex 1 induced regulated cell death, likely through mitochondrial-mediated apoptosis. Treatment with complex 1 induced morphological changes indicative of apoptosis, which includes membrane blebbing, PS externalization, increased levels of reactive oxygen species (ROS) and mitochondrial membrane depolarization (ΔΨm). These observations suggest that complex 1 targets the mitochondria and holds promise as a novel metal-based anti-cancer therapeutic for the selective treatment of colorectal cancer.
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