GF

GF
  • 文章类型: Journal Article
    化脓性汗腺炎(HS)是一种难以控制的慢性炎症性疾病,其机制尚不清楚。肝细胞生长因子(HGF)已被报道在HS患者的血清和皮肤中显著上调,特别是在有隧道的病变中。在这项研究中,我们检查了HGF处理的角质形成细胞(KCs)的转录组,并将其与HS病变的遗传谱进行了比较.HGF在HS皮肤中高表达,尤其是在真皮深处,与健康对照相比,其来源主要是成纤维细胞。与白细胞介素-17A或肿瘤坏死因子-α相比,HGF在KCs中上调更多的基因,这些基因包括多个上皮间质转化(EMT)相关基因。HGF刺激的KC中差异表达的基因参与了EMT相关途径的激活。与健康皮肤和非损伤相比,这些HGF诱导的基因在HS损伤中显著上调,并且与HS隧道更强烈相关。总之,HGF在HS中高表达,并在KCs中诱导EMT相关基因;HGF诱导的基因与带隧道的HS基因谱高度相关,提示HGF可能通过EMT参与HS隧道的形成。
    Hidradenitis suppurativa (HS) is a chronic inflammatory disease that is difficult to control, and its mechanism remains unclear. Hepatocyte GF (HGF) has been reported to be significantly upregulated in the serum and skin of patients with HS, especially in the lesions with tunnels. In this study, we examined the transcriptome of HGF-treated keratinocytes and compared it with genetic profiling of HS lesions. HGF was highly expressed in HS skin, especially in the deep dermis, compared with that in healthy controls, and its source was mainly fibroblasts. HGF upregulated more genes in keratinocytes than IL-17A or TNF-a, and these genes included multiple epithelial-mesenchymal transition-related genes. Differentially expressed genes in HGF-stimulated keratinocytes were involved in activation of epithelial-mesenchymal transition-related pathways. These HGF-induced genes were significantly upregulated in HS lesions compared with those in healthy skin and nonlesions and were more strongly associated with HS tunnels. In summary, HGF was highly expressed in HS and induced epithelial-mesenchymal transition-related genes in keratinocytes; HGF-induced genes were highly associated with gene profiling of HS with tunnels, suggesting that HGF may be involved in HS tunnel formation through epithelial-mesenchymal transition.
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  • 文章类型: Journal Article
    背景:龙胆。是一种传统的藏药,具有镇痛和抗炎活性。环状RNA(circularRNAs,circRNAs)已被确定参与非小细胞肺癌(NSCLC)的肿瘤发生。这里,本研究旨在探讨龙胆黄酮(GF)和circ_0059665在NSCLC进展中的作用和机制。
    方法:采用qRT-PCR和蛋白质印迹分析检测mRNA和蛋白的含量。细胞增殖和侵袭能力通过细胞计数试剂盒-8,EdU,集落形成和transwell分析,分别。通过流式细胞术分析M2巨噬细胞极化。
    结果:GF治疗抑制NSCLC细胞增殖,低氧条件下的侵袭和M2巨噬细胞极化。Circ_0059665在NSCLC组织和细胞中高表达。其表达在低氧条件下增加,但在GF处理后降低。此外,circ_0059665过表达逆转了低氧条件下GF对NSCLC细胞的抗癌作用。机械上,circ_0059665充当miR-512-5p的海绵来调节NOVA2表达。缺氧降低miR-512-5p水平,NSCLC细胞中NOVA2水平升高,而这些趋势在GF治疗后被消除。Circ_0059665沉默抑制NSCLC细胞增殖,低氧环境中的侵袭和M2巨噬细胞极化,被NOVA2过表达抵消。此外,NOVA2上调逆转了GF对低氧处理NSCLC细胞的抑制作用。此外,GF通过抑制circ_0059665阻碍体内NSCLC肿瘤生长。
    结论:GF治疗在低氧环境中抑制NSCLC细胞增殖,侵袭和M2巨噬细胞极化通过circ_0059665/miR-512-5p/NOVA2轴。
    BACKGROUND: Gentiana macrophylla Pall. is a traditional Tibetan medicinal herb possessing antinociceptive and anti-inflammatory activities. Circular RNAs (circRNAs) have been identified to be involved in the tumorigenesis of non-small cell lung cancer (NSCLC). Here, this study focused on investigating the function and mechanism of Gentiana macrophylla flavonoids (GF) and circ_0059665 in NSCLC progression.
    METHODS: The contents of mRNA and protein were detected using qRT-PCR and western blotting analysis. Cell proliferative and invasive abilities were evaluated by cell counting kit-8, EdU, colony formation and transwell assays, respectively. M2 macrophage polarization was analyzed by flow cytometry.
    RESULTS: GF treatment suppressed NSCLC cell proliferation, invasion and M2 macrophage polarization under hypoxic conditions. Circ_0059665 was highly expressed in NSCLC tissues and cells. Its expression was increased under hypoxic conditions but was reduced following GF treatment. Furthermore, circ_0059665 overexpression reversed the anticancer effects of GF on NSCLC cells under hypoxic conditions. Mechanistically, circ_0059665 acted as a sponge for miR-512-5p to regulate NOVA2 expression. Hypoxia decreased miR-512-5p levels, and increased NOVA2 levels in NSCLC cells, while these tendencies were abolished after GF treatment. Circ_0059665 silencing inhibited NSCLC cell proliferation, invasion and M2 macrophage polarization in hypoxic environments, which were counteracted by NOVA2 overexpression. Moreover, NOVA2 upregulation reversed the suppressive effects of GF on NSCLC cells with hypoxia treatment. In addition, GF impeded NSCLC tumor growth in vivo via suppressing circ_0059665.
    CONCLUSIONS: GF treatment in hypoxic environments suppressed NSCLC cell proliferation, invasion and M2 macrophage polarization via the circ_0059665/miR-512-5p/NOVA2 axis.
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  • 文章类型: Journal Article
    最近发表的工作提供了恶性肿瘤相关调节机制的第一个已知证据,功能性连接嵌入受体酪氨酸激酶(RTK)中的磷酸调节的degron结构域,它在癌症中的异位表达,以特定的自分泌生长因子信号为条件。机械上,生长因子触发的磷酸化抑制调节的RTK中存在的Degron结构域,阻止访问特定的降解复合体。这最终挽救了RTK从快速泛素-蛋白酶体系统介导的降解,最重要的是,导致其细胞过度表达。这个机制,已在此处分配了新的功能名称“通过退化救援过度表达”(OEDR),为控制癌症中的RTKs表达提供了额外的层和潜在的优先工具,除了在转录和信使转录物稳定水平起作用的其他机制。我们建议这种新定义的磷酸化/泛素化开关依赖性信号在细胞生物学和人类病理生理学中具有更广泛的未被利用的相关性。本文在生理内分泌回路和癌症的背景下讨论了最近鉴定的OEDR调节的RTK的潜在机制。
    Recently published work provide the first known evidence of a malignancy-associated regulatory mechanism, functionally connecting a phospho-regulated degron domain embedded in a receptor tyrosine kinase (RTK), with its ectopic expression in cancer, conditional to a specific autocrine growth factor signal. Mechanistically, the growth factor-triggered phosphorylation inhibits the degron domain present in the regulated RTK, blocking access to a specific degradation complex. This ultimately rescues the RTK from rapid ubiquitin-proteasome-system-mediated degradation and, most importantly, causes its cellular overexpression. This mechanism, which has been here assigned the new functional name \"Over-Expression by Degradation Rescue\" (OEDR), provides an additional layer and potentially preferential tool for the control of RTKs expression in cancer, in addition to other mechanisms acting at the transcriptional and messenger transcript stabilization levels. We propose this newly defined phosphorylation/ubiquitination switch-dependent signal to bear wider unexploited relevance in cell biology and human pathophysiology. The recently identified mechanism underlying an OEDR-regulated RTK is discussed herein in the context of physiological endocrine circuits and cancer.
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  • 文章类型: Journal Article
    背景:参附汤(SFD)是一种具有强心作用的经典中药方剂。人参(人参C.A.Meyer的干燥根)和附子(乌头次根的加工产品)的组合,SFD的主要成分,据报道可以改善彼此的药理作用。此外,研究表明,SFD的主要活性成分,人参总皂苷(GTS)和附子总生物碱(FTA),具有抗抑郁活性。然而,这些成分对卵巢切除术引起的抑郁样行为的影响,更年期抑郁症的典范,没有被研究过。
    目的:我们的研究旨在阐明GTS和FTA相容性(GF)在卵巢切除小鼠中的抗抑郁样作用及其潜在机制。
    方法:为了阐明GF对卵巢切除小鼠的抗抑郁样作用,不同剂量GF灌胃给药7天后进行行为测试。CREB-BDNF的潜在分子机制,通过蛋白质印迹检测BDNF-mTORC1和自噬信号,通过UPLC-QE加MS检查血清代谢产物,通过高尔基Cox染色确定树突棘密度。
    结果:GF显著降低了强迫游泳试验的不动时间。GF也增加了pCREB/CREB的水平,BDNF,Akt,前额叶皮质和海马中的mTORC1和p62,以及卵巢切除小鼠前额叶皮质和海马中LC3-II/LC3-I的降低。此外,通过代谢组学鉴定了15种血清差异代谢物(其中9种是脂质和脂质分子)。接下来,雷帕霉素阻断了GF的抗抑郁作用,mTORC1的抑制剂。GF对pCREB水平的抗抑郁作用,mTORC1、LC3-Ⅱ/LC3-Ⅰ和p62在前额叶皮质和BDNF的水平,Akt,雷帕霉素抑制海马中的mTORC1和p62,树突棘密度也受到调节。
    结论:GF对去卵巢小鼠具有抗抑郁作用,和其他抗抑郁药一样,这些效应涉及BDNF-mTORC1的激活、自噬调节以及对海马突触可塑性的影响。此外,代谢组学结果提示GF对外周血脂谱也有影响,这可能为这些抗抑郁样作用提供潜在的生物标志物.这些结果表明,GF作为抑郁症的有希望的药物治疗值得进一步探索。本研究为中药复方新适应症的开发提供了新的方向。
    BACKGROUND: Shenfu decoction (SFD) is a classic Chinese medicine prescription that has a strong cardiotonic effect. The combination of ginseng (the dried root of Panax ginseng C. A. Meyer) and Fuzi (processed product of sub-root of Aconitum carmichaeli Debx), the main constituents of SFD, has been reported to improve the pharmacological effect of each other. Moreover, research has shown that the main active components of SFD, ginseng total saponins (GTS) and Fuzi total alkaloids (FTA), have antidepressant activity. However, the effects of these ingredients on depressive-like behavior induced by ovariectomy, a model of menopausal depression, have not been studied.
    OBJECTIVE: Our research aims to elucidate the antidepressant-like effects of GTS and FTA compatibility (GF) in ovariectomized mice and the potential mechanisms.
    METHODS: To elucidate the antidepressant-like effects of GF in mice in ovariectomy condition, behavioral tests were performed after 7 days of intragastric administration of different doses of GF. Underlying molecular mechanisms of CREB-BDNF, BDNF-mTORC1 and autophagy signaling were detected by western blotting, serum metabolites were examined by UPLC-QE plus-MS and dendritic spine density was determined by Golgi-Cox staining.
    RESULTS: GF remarkably decreased the immobility time in the forced swim test. GF also increased levels of pCREB/CREB, BDNF, Akt, mTORC1 and p62 in the prefrontal cortex and hippocampus, as well as decreased LC3-II/LC3-I in the prefrontal cortex and hippocampus of ovariectomized mice. Furthermore, 15 serum differential metabolites (9 of which are lipids and lipid molecules) were identified by metabonomics. Next, the antidepressant-like effects of GF was blocked by rapamycin, an inhibitor of mTORC1. The antidepressant actions of GF on levels of pCREB, mTORC1, LC3-Ⅱ/LC3-Ⅰ and p62 in the prefrontal cortex and the levels of BDNF, Akt, mTORC1 and p62 in the hippocampus were inhibited by rapamycin, and the dendritic spines density was also regulated.
    CONCLUSIONS: GF has antidepressant effects in ovariectomized mice, and like other antidepressants, these effects involve activation of BDNF-mTORC1, autophagy regulation and consequent effects on hippocampal synaptic plasticity. Moreover, metabolomic results suggest that GF also has effects on peripheral lipid profiles that may provide potential biomarkers for these antidepressant-like effects. These results indicate that GF is worthy of further exploration as a promising pharmaceutical treatment for depression. This study provides a new direction for the development of new indications for traditional Chinese medicine compounds.
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  • 文章类型: Journal Article
    在增殖的细胞和组织中,细胞分裂(M期)之前的许多检查点(G1/S和G2/M)需要由血清中存在的生长因子提供的信号。已证明IGFs(I和II)构成哺乳动物血清的肽活性部分的关键内在组分。体内遗传消融研究表明,由IGF通过其细胞受体触发的细胞信号代表了细胞生长和细胞周期进程的不可替代要求。对已发表文献的回顾性和当前评估揭示了由这些因子激活的细胞内回路,为我们提供了更好的多效性机制作用的图片,通过该机制,IGF在发育生长以及恶性增殖中调节细胞大小和有丝分裂。本工作旨在总结从IGF配体/受体及其细胞内信号转导子中获得的累积知识,以控制细胞大小和细胞周期,特别关注其在人类癌症中的可操作回路。此外,我们为IGF生长-促有丝分裂途径的关键功能判别式带来了新的观点,从而可以根据已建立的证据对其某些信号成分进行重新评估。
    In proliferating cells and tissues a number of checkpoints (G1/S and G2/M) preceding cell division (M-phase) require the signal provided by growth factors present in serum. IGFs (I and II) have been demonstrated to constitute key intrinsic components of the peptidic active fraction of mammalian serum. In vivo genetic ablation studies have shown that the cellular signal triggered by the IGFs through their cellular receptors represents a non-replaceable requirement for cell growth and cell cycle progression. Retroactive and current evaluation of published literature sheds light on the intracellular circuitry activated by these factors providing us with a better picture of the pleiotropic mechanistic actions by which IGFs regulate both cell size and mitogenesis under developmental growth as well as in malignant proliferation. The present work aims to summarize the cumulative knowledge learned from the IGF ligands/receptors and their intracellular signaling transducers towards control of cell size and cell-cycle with particular focus to their actionable circuits in human cancer. Furthermore, we bring novel perspectives on key functional discriminants of the IGF growth-mitogenic pathway allowing re-evaluation on some of its signal components based upon established evidences.
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  • 文章类型: Journal Article
    背景:需要寻找用于改善软骨移植物制备的合适的药理学物质和手术方法。本研究旨在评估PLGF和移植物制备方法对软骨移植物存活的影响。
    方法:这种控制,实验研究在克尔曼医科大学进行,克尔曼,伊朗在2016年至2017年期间对两组兔子。第1组接受PLGF(PLGF+),而第2组不接受任何PLGF(PLGF-)。在每一组中,三种carilage移植物制备方法,包括块状软骨移植物(BCG),软骨切丁移植物(DCG),和使用崩溃软骨移植物(CCG)。干预后三个月,移植物被重新评估并称重.从每个移植物中取出一个炎症样本,纤维化,坏死,和有活力的软骨细胞.
    结果:CCG方法骨化百分比(OS%)最大,PLGF没有变化。BCG方法有最大的活软骨细胞数,通过PLGF减毒。BCG法纤维化程度最高,PLGF没有任何改变。此外,PLGF+组的炎症和坏死百分比大于PLGF-组。
    结论:影响软骨移植物性能的最重要因素是移植物制备方法,而PLGF仅减弱方法性能而不改变它们。
    BACKGROUND: Finding a suitable pharmacological substance and a surgical method for improving cartilage graft preparation are necessary. This present study was planned to evaluate the effects of PLGF and graft preparation methods on cartilage graft survival.
    METHODS: This controlled, experimental study was performed in Kerman University of Medical Science, Kerman, Iran during 2016- 2017 on two groups of rabbits. Group 1 received PLGF (PLGF +) while Group 2 did not receive any PLGF (PLGF -). In each group, three carilage graft preparation methods including Block Cartilage Graft (BCG), Diced Cartilage Graft (DCG), and Crashed Cartilage Graft (CCG) were used. Three months after the intervention, the grafts were re-assessed and weighed. A specimen from each graft was taken for inflammation, fibrosis, necrosis, and viable chondrocyte.
    RESULTS: The CCG method had the maximum ossification percentage (OS%) and no change occurred by PLGF. The BCG method had the greatest viable chondrocyte number, attenuated by PLGF. The BCG method had the highest amount of fibrosis, without any change by PLGF. Additionally, the inflammation percentage and necrosis in the PLGF + group were greater than the PLGF - group.
    CONCLUSIONS: The most important effecting factor on the properties of cartilage graft is the method of graft preparation and PLGF only attenuates the methods properties without changing them.
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  • 文章类型: Journal Article
    我们介绍图形映射-流体智能(推理能力)的简单有效的计算机测试。测试需要结构映射-推理过程的关键组成部分。参与者被要求在两个数学上同构但视觉上不同的图形上映射一对相应的节点。测试难度可以很容易地操纵——结构越复杂,图形越不相似,响应错误率越高。图映射在项目生成中提供了高度的灵活性,从琐碎到极其困难的项目,支持适用于相关研究的渐进项目序列。它还允许固定难度级别的多个项目实例(克隆)以及完整的项目随机化,两者都特别适用于受试者内的实验设计,纵向研究,和自适应测试。该测试管理时间短,参与者不熟悉,产生实际优势。图映射具有出色的心理测量特性:其收敛的有效性和可靠性可与三种领先的传统流体推理测试相媲美。方便的软件允许研究人员为给定的研究和样本设计最佳的测试变体。图表映射可从以下网址下载:https://osf.io/wh7zv/。
    We present Graph Mapping - a simple and effective computerized test of fluid intelligence (reasoning ability). The test requires structure mapping - a key component of the reasoning process. Participants are asked to map a pair of corresponding nodes across two mathematically isomorphic but visually different graphs. The test difficulty can be easily manipulated - the more complex structurally and dissimilar visually the graphs, the higher response error rate. Graph Mapping offers high flexibility in item generation, ranging from trivial to extremally difficult items, supporting progressive item sequences suitable for correlational studies. It also allows multiple item instances (clones) at a fixed difficulty level as well as full item randomization, both particularly suitable for within-subject experimental designs, longitudinal studies, and adaptive testing. The test has short administration times and is unfamiliar to participants, yielding practical advantages. Graph Mapping has excellent psychometric properties: Its convergent validity and reliability is comparable to the three leading traditional fluid reasoning tests. The convenient software allows a researcher to design the optimal test variant for a given study and sample. Graph Mapping can be downloaded from: https://osf.io/wh7zv/.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    The COVID-19 pandemic resulted in more than 4.3 million confirmed cases and more than 2,90,000 deaths worldwide. It has also given rise to fears of an imminent economic crisis and recession. Social distance, self-isolation, and travel restrictions have led to a reduction in the workforce across all economical sectors and have led to a loss of many jobs. Schools have closed down, and the need for commodities and manufactured goods has decreased. On the other hand, the need for medical supplies has increased significantly. The food sector is also facing increased demand as a result of panic buying and storing food products. In response to this global outbreak, we summarize the socioeconomic effects of COVID-19 on the various aspects of the world economy. In Malaysia, the COVID-19 epidemic has checked the resilience of the agriculture sector. Especially the Malaysian paddy industry as country imports 30% of its overall consumption from different parts of the world. The real price of rice triplicating for the consumers, which was alarming for nations in this pandemic situation. The Government of Malaysia introduced the National Agrofood Policy 2011-2020 (NAP4) in 2010 as a guidance document for the implementation of agricultural sector development programs and projects in Malaysia. The NAP4 \'s 10-year term is to be finished by the end of 2020. Several sectors demonstrate substantial success after approximately 8 years of introduction, while the other classes often lag behind the goal and progress quite slowly. Agricultural sector performance is affected by many problems and challenges. In acknowledgment of the poor success of this field, the Ministry of Agriculture and Agri-Based Industry has launched new approaches, policies, and programs that can change the agricultural sector more rapidly. The new direction is aimed at ensuring national food security and boosting farm and revenues. The authorized government agency needs to revise the policy formulation where Malaysia needs to set stages to revolutionize and modernize the rice farming to address the problem faced by the paddy sector in this pandemic situation to adopt GF. In this study, the researcher focuses on the improvisation of the policy to increase the paddy production sustainably.
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  • 文章类型: Journal Article
    Ewing sarcoma is a highly aggressive round cell mesenchymal neoplasm, most often occurring in children and young adults. At the molecular level, it is characterized by the presence of recurrent chromosomal translocations. In the last years, next-generation technologies have contributed to a more accurate diagnosis and a refined classification. Moreover, the application of these novel technologies has highlighted the relevance of intertumoral and intratumoral molecular heterogeneity and secondary genetic alterations. Furthermore, they have shown evidence that genomic features can change as the tumor disseminates and are influenced by treatment as well. Similarly, next-generation technologies applied to liquid biopsies will significantly impact patient management by allowing the early detection of relapse and monitoring response to treatment. Finally, the use of these novel technologies has provided data of great value in order to discover new druggable pathways. Thus, this review provides concise updates on the latest progress of these breakthrough technologies, underscoring their importance in the generation of key knowledge, prognosis, and potential treatment of Ewing Sarcoma.
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