NK, natural killer

NK,自然杀手
  • 文章类型: Journal Article
    糖脂代谢紊乱是威胁人类健康和生命的主要因素。遗传,环境,心理,细胞,和分子因素有助于其发病机制。一些研究表明,神经内分泌轴功能障碍,胰岛素抵抗,氧化应激,慢性炎症反应,肠道菌群失调是与其相关的核心病理联系。然而,糖脂代谢紊乱的潜在分子机制和治疗靶点仍有待阐明。高通量技术的进展有助于阐明糖脂代谢紊乱的病理生理学。在本次审查中,我们探索了基因组学的方法和方法,转录组学,蛋白质组学,代谢组学,和肠道微生物可以帮助识别新的候选生物标志物,用于糖脂代谢紊乱的临床管理。我们还讨论了这些疾病的多组学研究的局限性和建议的未来研究方向。
    Glycolipid metabolism disorder are major threats to human health and life. Genetic, environmental, psychological, cellular, and molecular factors contribute to their pathogenesis. Several studies demonstrated that neuroendocrine axis dysfunction, insulin resistance, oxidative stress, chronic inflammatory response, and gut microbiota dysbiosis are core pathological links associated with it. However, the underlying molecular mechanisms and therapeutic targets of glycolipid metabolism disorder remain to be elucidated. Progress in high-throughput technologies has helped clarify the pathophysiology of glycolipid metabolism disorder. In the present review, we explored the ways and means by which genomics, transcriptomics, proteomics, metabolomics, and gut microbiomics could help identify novel candidate biomarkers for the clinical management of glycolipid metabolism disorder. We also discuss the limitations and recommended future research directions of multi-omics studies on these diseases.
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  • 文章类型: Journal Article
    未经批准:前列腺癌根治术,局部前列腺癌(PC)的标准管理方法,可能会引起与免疫调节作用相关的应激反应。假设区域麻醉通过最小化神经内分泌手术应激反应来降低手术的免疫效应。从而减轻肿瘤细胞的播散。我们的主要目的是研究在动物模型上使用脊髓块是否会减弱PC肿瘤细胞的播散。我们还评估了循环NK细胞的数量以及炎症和抗炎细胞因子的量。
    未经证实:皮下肿瘤模型,使用用荧光素酶产生基因(PC-3M-luc-C6)转染的PC-3M细胞系。在适当的肿瘤建立后和肿瘤转移之前,动物在全身麻醉或联合麻醉(全身麻醉和脊髓麻醉)下接受肿瘤切除手术。对照组仅全身麻醉。
    UNASSIGNED:具有PC-3M-luc-C6细胞的皮下肿瘤模型在35天后可有效引起远处转移。与接受联合麻醉的组相比,仅在全身麻醉下接受手术的动物中循环肿瘤细胞的数量增加。白细胞介素6水平在各组均有差异,随着全身麻醉组的增加。
    UNASSIGNED:我们的研究结果表明,椎管内麻醉和全身麻醉联合使用可能会减弱对先天肿瘤免疫的抑制,这可能与手术后神经内分泌反应的减少有关。
    未经批准:动物伦理委员会1332/2019。
    UNASSIGNED: Radical prostatectomy, a standard management approach for localized Prostate Cancer (PC), may cause a stress response associated with immune modulating effects. Regional anesthesia was hypothesized to reduce the immune effects of surgery by minimizing the neuroendocrine surgical stress response, thus mitigating tumor cells dissemination. Our primary objective was to investigate whether the use of spinal blocks attenuates PC tumor cells dissemination on an animal model. We also assessed the number of circulating NK cells and the amount of inflammatory and anti-inflammatory cytokines.
    UNASSIGNED: A subcutaneous tumor model, with PC-3M cell line transfected with a luciferase-producing gene (PC-3M-luc-C6) was used. After proper tumor establishment and before tumors became metastatic, animals were submitted to tumor excision surgeries under general or combined (general and spinal) anesthesia. A control group was only anesthetized with general anesthesia.
    UNASSIGNED: The subcutaneous tumor model with PC-3M-luc-C6 cells was effective in causing distant metastasis after 35 days. The number of circulating tumor cells increased in animals that underwent surgery under general anesthesia alone compared to the group submitted to combined anesthesia. Interleukin 6 levels were different in all groups, with increase in the general anesthesia group.
    UNASSIGNED: Our results suggest that combination of spinal and general anesthesia may attenuate the suppression of innate tumor immunity and it might be related to a reduction in the neuroendocrine response to surgery.
    UNASSIGNED: Animal Ethics Committee 1332/2019.
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  • 文章类型: Journal Article
    在交配之前和交配期间,将雄性和雌性大鼠(26天大)在饮用水中暴露于0.0、0.4、4或40mg/kg体重的醋酸银(AgAc)10周。精子阳性的雌性保留在其剂量组中,并在妊娠和哺乳期间暴露于乙酸银。在出生后第26天,使用全基因组微阵列在转录水平上评估了银离子对发育中的F1代大鼠胸腺的影响。基因表达谱分析使用倍数变化(FC)>1.5和未调整的p<0.05的宽松标准在每个剂量组中鉴定了十几个差异表达基因(DEGs),而不管分析是在每个性别组中还是在两个性别组组合的情况下进行。未观察到对DEG数量的剂量依赖性影响。此外,在校正多次测试后,这些基因中没有一个具有<0.05的错误发现率(FDR)。这些结果与胸腺与体重比率未受影响并且未鉴定出组织病理学异常的观察结果相结合,表明子宫内暴露于高达26.0mg/kg(相当于40.0mg/kg乙酸银)的银离子对发育中的胸腺没有不利影响。
    Male and female rats (26-day-old) were exposed to 0.0, 0.4, 4 or 40 mg/kg body weight silver acetate (AgAc) in drinking water for 10 weeks prior to and during mating. Sperm-positive females remained within their dose groups and were exposed to silver acetate during gestation and lactation. At postnatal day 26, the effect of silver ions on the developing F1 generation rat thymus was evaluated at the transcriptional level using whole-genome microarrays. Gene expression profiling analyses identified a dozen differentially expressed genes (DEGs) in each dose group using a loose criterion of fold change (FC) >1.5 and unadjusted p < 0.05, regardless of whether the analysis was conducted within each gender group or with both gender groups combined. No dose-dependent effect was observed on the number of DEGs. In addition, none of these genes had a false discovery rate (FDR) <0.05 after correction for multiple testing. These results in combination with the observation that thymus-to-body-weight ratios were not affected and no histopathological abnormalities were identified indicate that in utero exposure to silver ions up to 26.0 mg/kg (equivalent to 40.0 mg/kg silver acetate) did not have an adverse effect on the developing thymus.
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  • 文章类型: Review
    免疫调节单克隆抗体(mAb)不同于它们的肿瘤靶向对应物,因为它们通过与免疫系统的可溶性或(最常见的)细胞组分直接相互作用而发挥治疗作用。除了有希望治疗自身免疫性疾病和炎症性疾病,免疫调节性单克隆抗体最近被证明是对抗肿瘤病症的有效治疗武器。一类免疫调节mAb通过抑制经常被癌细胞利用以建立免疫耐受的防护系统来起作用。所谓的“免疫检查站”。“在全球范围内,不少于3个检查点阻断单克隆抗体已被批准用于肿瘤适应症,其中2个在过去12个月。这些分子不仅在受特定肿瘤影响的患者中介导单药临床活性,而且还显著提高了几种抗癌化疗的疗效-,放射疗法或免疫疗法。这里,我们总结了最近在开发检查点阻断单克隆抗体方面的进展,以及具有不同作用机制的免疫调节单克隆抗体。
    Immunomodulatory monoclonal antibodies (mAbs) differ from their tumor-targeting counterparts because they exert therapeutic effects by directly interacting with soluble or (most often) cellular components of the immune system. Besides holding promise for the treatment of autoimmune and inflammatory disorders, immunomodulatory mAbs have recently been shown to constitute a potent therapeutic weapon against neoplastic conditions. One class of immunomodulatory mAbs operates by inhibiting safeguard systems that are frequently harnessed by cancer cells to establish immunological tolerance, the so-called \"immune checkpoints.\" No less than 3 checkpoint-blocking mAbs have been approved worldwide for use in oncological indications, 2 of which during the past 12 months. These molecules not only mediate single-agent clinical activity in patients affected by specific neoplasms, but also significantly boost the efficacy of several anticancer chemo-, radio- or immunotherapies. Here, we summarize recent advances in the development of checkpoint-blocking mAbs, as well as of immunomodulatory mAbs with distinct mechanisms of action.
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  • 文章类型: Review
    吲哚胺2,3-二氧化酶1(IDO1)是主要的酶,所谓的“犬尿氨酸途径”的限速步骤,即,将必需氨基酸L-色氨酸(Trp)转化为L-犬尿氨酸(Kyn)的代谢级联反应。IDO1由一些组织组成型表达,并由抗原呈递细胞的特定亚群以诱导方式表达,已被证明在建立和维持外周耐受性方面发挥作用。至少在某种程度上,这反映了IDO1限制Trp的微环境可用性并有利于Kyn及其某些衍生物的积累的能力。此外,一些肿瘤性病变表达IDO1,为它们提供了逃避抗癌免疫监视的手段。这一考虑推动了几种IDO1抑制剂的开发,其中一些(包括1-甲基色氨酸)目前已进入临床评估。在动物肿瘤模型中,通过化学或遗传干预对IDO1的抑制确实与治疗相关的抗癌免疫应答的(重新)激活有关。这个说,尽管几种免疫治疗方案能够促进IDO1的表达,但它们仍具有强大的临床活性.此外,最近已显示1-甲基色氨酸发挥IDO1非依赖性免疫刺激作用。这里,我们总结了针对IDO1靶向干预措施的抗肿瘤活性的临床前和临床研究.
    Indoleamine 2,3-dioxigenase 1 (IDO1) is the main enzyme that catalyzes the first, rate-limiting step of the so-called \"kynurenine pathway\", i.e., the metabolic cascade that converts the essential amino acid L-tryptophan (Trp) into L-kynurenine (Kyn). IDO1, which is expressed constitutively by some tissues and in an inducible manner by specific subsets of antigen-presenting cells, has been shown to play a role in the establishment and maintenance of peripheral tolerance. At least in part, this reflects the capacity of IDO1 to restrict the microenvironmental availability of Trp and to favor the accumulation of Kyn and some of its derivatives. Also, several neoplastic lesions express IDO1, providing them with a means to evade anticancer immunosurveillance. This consideration has driven the development of several IDO1 inhibitors, some of which (including 1-methyltryptophan) have nowadays entered clinical evaluation. In animal tumor models, the inhibition of IDO1 by chemical or genetic interventions is indeed associated with the (re)activation of therapeutically relevant anticancer immune responses. This said, several immunotherapeutic regimens exert robust clinical activity in spite of their ability to promote the expression of IDO1. Moreover, 1-methyltryptophan has recently been shown to exert IDO1-independent immunostimulatory effects. Here, we summarize the preclinical and clinical studies testing the antineoplastic activity of IDO1-targeting interventions.
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