regulators

调节器
  • 文章类型: Journal Article
    癌症的负担对不同地区和人群子集产生不成比例的影响。疾病特异性属性,再加上遗传和社会经济因素,显着影响癌症治疗结果。精确肿瘤学有望为特定种族表型和临床人口统计学特征开发安全有效的选择。目前,临床试验集中在资源丰富的地区,更健康,白色,受过教育,赋予人口权力。弱势和边缘化人群往往被剥夺了参与临床试验的机会。尽管监管机构一直在努力,工业,和其他利益相关者,因素包括试验法规的多样性以及患者和提供者相关的文化,logistic,和操作障碍限制了临床试验的包容性。通过涉及监管举措的协作行动来理解和解决这些制约因素,工业,患者倡导团体,以文化敏感的方式参与社区,设计和促进分散的临床试验对于建立一个促进人口亚群代表性公平的临床研究生态系统至关重要。
    The burden of cancer exerts a disproportionate impact across different regions and population subsets. Disease-specific attributes, coupled with genetic and socioeconomic factors, significantly influence cancer treatment outcomes. Precision oncology promises the development of safe and effective options for specific ethnic phenotypes and clinicodemographic profiles. Currently, clinical trials are concentrated in resource-rich geographies with younger, healthier, white, educated, and empowered populations. Vulnerable and marginalized people are often deprived of opportunities to participate in clinical trials. Despite consistent endeavors by regulators, industry, and other stakeholders, factors including diversity in trial regulations and patient and provider-related cultural, logistic, and operational barriers limit the inclusiveness of clinical trials. Understanding and addressing these constraints by collaborative actions involving regulatory initiatives, industry, patient advocacy groups, community engagement in a culturally sensitive manner, and designing and promoting decentralized clinical trials are vital to establishing a clinical research ecosystem that promotes equity in the representation of population subgroups.
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  • 文章类型: Research Support, Non-U.S. Gov\'t
    监管营销授权不足以确保患者获得新的医药产品。卫生技术评估机构可能需要有关有效性的数据,相对有效性,和成本效益。医疗保健系统可能需要有关临床效用的数据,储蓄,和预算影响。此外,这些机构的确切要求因国家而异,有时甚至因地区而异,导致不同数据需求的拼凑,以实现有效的,报销患者获得新疗法。此外,临床医生需要数据来做出明智的临床管理决策.这一要求对于在监管部门批准时数据和临床经验通常有限的罕见疾病至关重要。本文描述了一项创新计划,称为“SATURN项目:处理实践和利用的系统积累,现实世界的证据,和罕见疾病成骨不全症的自然史数据。该项目的目标是通过利用现有数据源来生成一个共同的核心数据集,以满足各种利益相关者的需求,并通过多种方法避免碎片化(例如,一系列单独的国家请求/方法,与监管机构的潜在要求无关)。预期这种方法将减少患者获得改变生活的药物的时间。虽然SATURN项目适用于成骨不全症,预计这些原则也可以应用于其他罕见疾病,并减少患者获得新药物的时间。
    Regulatory marketing authorisation is not enough to ensure patient access to new medicinal products. Health Technology Assessment bodies may require data on effectiveness, relative effectiveness, and cost-effectiveness. Healthcare systems may require data on clinical utility, savings, and budget impact. Furthermore, the exact requirements of these bodies vary country by country and sometimes even region to region, resulting in a patchwork of different data requirements to achieve effective, reimbursed patient access to new therapies. In addition, clinicians require data to make informed clinical management decisions. This requirement is of key importance in rare diseases where there is often limited data and clinical experience at the time of regulatory approval.This paper describes an innovative initiative that is called Project SATURN: Systematic Accumulation of Treatment practices and Utilization, Real world evidence, and Natural history data for the rare disease Osteogenesis Imperfecta. The objective of this project is to generate a common core dataset by utilising existing data sources to meet the needs of the various stakeholders and avoiding fragmentation through multiple approaches (e.g., a series of individual national requests/approaches, and unconnected with the regulators\' potential requirements). It is expected that such an approach will reduce the time for patient access to life-changing medications. Whilst Project SATURN applies to Osteogenesis Imperfecta, it is anticipated that the principles could also be applied to other rare diseases and reduce the time for patient access to new medications.
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  • 文章类型: Journal Article
    宫颈癌(CC)仍然是全球女性最常见的恶性肿瘤之一,对妇女的健康构成严重威胁。N6-甲基腺苷(m6A)修饰,作为最丰富的RNA甲基化修饰类型,并已被发现在各种癌症中起关键作用。目前的研究表明RNAm6A修饰与CC的发生和进展密切相关,包括m6A水平及其监管机制的中断。本文综述了CC中m6A改性研究的现状,探索了m6A水平和调节剂(甲基转移酶,去甲基酶,读数蛋白)在CC中,并检查了m6A调节剂的小分子抑制剂在疾病治疗中的应用。这些发现为CC的未来治疗提供了新的见解。
    Cervical cancer (CC) remains one of the most common malignancies among women worldwide, posing a serious threat to women\'s health. N6-methyladenosine (m6A) modification, as the most abundant type of RNA methylation modification, and has been found to play a crucial role in various cancers. Current research suggests a close association between RNA m6A modification and the occurrence and progression of CC, encompassing disruptions in m6A levels and its regulatory machinery. This review summarizes the current status of m6A modification research in CC, explores the mechanisms underlying m6A levels and regulators (methyltransferases, demethylases, reader proteins) in CC and examines the application of small-molecule inhibitors of m6A regulators in disease treatment. The findings provide new insights into the future treatment of CC.
    The m6A modification participates in regulating the proliferation, migration, invasion, cell cycle, apoptosis, drug resistance and sensitivity to chemotherapy in cervical cancer cells.
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  • 文章类型: Journal Article
    放线菌经历复杂的多细胞生命周期,并产生广泛的专门代谢产物,包括大多数抗生素。这些生物过程由复杂的调节途径控制,为了更好地理解它们是如何被控制的,我们需要增加我们对转录因子结合位点的认识。这里,我们提供LogoMotif(https://logomotif。生物信息学。nl),放线菌中表征和预测的转录因子结合位点的开源数据库,以及它们的同源位置权重矩阵和隐马尔可夫模型。提供了链霉菌模型生物中结合位点位置的全基因组预测,并在交互式调节网络中可视化。在Web界面中,用户可以自由访问,下载并调查底层数据。通过这些精选的放线菌调节相互作用的集合,LogoMotif作为结合位点预测的基础,从而为用户提供了如何引发感兴趣基因表达和指导基因组挖掘工作的线索。
    Actinobacteria undergo a complex multicellular life cycle and produce a wide range of specialized metabolites, including the majority of the antibiotics. These biological processes are controlled by intricate regulatory pathways, and to better understand how they are controlled we need to augment our insights into the transcription factor binding sites. Here, we present LogoMotif (https://logomotif.bioinformatics.nl), an open-source database for characterized and predicted transcription factor binding sites in Actinobacteria, along with their cognate position weight matrices and hidden Markov models. Genome-wide predictions of binding site locations in Streptomyces model organisms are supplied and visualized in interactive regulatory networks. In the web interface, users can freely access, download and investigate the underlying data. With this curated collection of actinobacterial regulatory interactions, LogoMotif serves as a basis for binding site predictions, thus providing users with clues on how to elicit the expression of genes of interest and guide genome mining efforts.
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  • 文章类型: Journal Article
    血-睾丸屏障(BTB)形成在生精基底膜附近。这是一个独特的超微结构,将睾丸生精上皮分为心尖(adluminal)和基底区室。它通过重组其结构在精母细胞的发育和成熟中起着至关重要的作用。这使得pleptotene精母细胞能够通过BTB运输,在生精小管中从基部到腔室。睾丸细胞分泌的几种生物活性肽和生物分子调节BTB功能并支持精子发生。这些肽激活各种下游信号蛋白,也可以是它们自身的靶标,这可以改善药物在BTB中的扩散。间隙连接(GJ)及其在BTB上的共存连接保持了免疫屏障的完整性,并且可以在精母细胞过渡期间成为“门户”。这些路口是毒物进入的可能途径,导致男性生殖功能障碍.在这里,我们总结了所有监管机构在维护BTB方面发挥重要作用的详细机制,这将有助于研究人员了解和找到睾丸内药物输送的目标。
    The blood-testis barrier (BTB) is formed adjacent to the seminiferous basement membrane. It is a distinct ultrastructure, partitioning testicular seminiferous epithelium into apical (adluminal) and basal compartments. It plays a vital role in developing and maturing spermatocytes into spermatozoa via reorganizing its structure. This enables the transportation of preleptotene spermatocytes across the BTB, from basal to adluminal compartments in the seminiferous tubules. Several bioactive peptides and biomolecules secreted by testicular cells regulate the BTB function and support spermatogenesis. These peptides activate various downstream signaling proteins and can also be the target themself, which could improve the diffusion of drugs across the BTB. The gap junction (GJ) and its coexisting junctions at the BTB maintain the immunological barrier integrity and can be the \"gateway\" during spermatocyte transition. These junctions are the possible route for toxicant entry, causing male reproductive dysfunction. Herein, we summarize the detailed mechanism of all the regulators playing an essential role in the maintenance of the BTB, which will help researchers to understand and find targets for drug delivery inside the testis.
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  • 文章类型: Video-Audio Media
    慢性肾脏病(CKD)历来是一个重要的全球健康问题。深刻地影响着生活和幸福。在CKD的过程中,随着肾功能的逐渐丧失,各种危及生命的并发症的发生率,比如心血管疾病,脑血管意外,感染和中风,也在迅速增加。不幸的是,现有的治疗方法在阻止CKD肾损伤进展方面的能力有限,强调迫切需要深入研究控制CKD发生和发展的精确分子机制,同时确定新的治疗靶点。肾纤维化,CKD的典型病理特征,在破坏正常肾脏结构和肾功能丧失中起着关键作用。铁凋亡是最近发现的一种铁依赖性细胞死亡形式,其特征是脂质过氧化物积累。Ferroptosis已成为各种疾病和器官纤维化引发的潜在关键参与者。大量证据表明,铁性死亡可能显著有助于CKD与其进展之间的复杂相互作用。这篇综述从铁代谢和脂质过氧化方面全面概述了CKD与铁死亡之间的复杂关系。并讨论了铁死亡的药理学研究现状,揭示了有希望的干预途径。它进一步说明了与CKD进展有关的铁凋亡相关调节机制的最新突破,从而为CKD治疗提供新的见解。视频摘要。
    Chronic kidney disease (CKD) has historically been a significant global health concern, profoundly impacting both life and well-being. In the process of CKD, with the gradual loss of renal function, the incidence of various life-threatening complications, such as cardiovascular diseases, cerebrovascular accident, infection and stroke, is also increasing rapidly. Unfortunately, existing treatments exhibit limited ability to halt the progression of kidney injury in CKD, emphasizing the urgent need to delve into the precise molecular mechanisms governing the occurrence and development of CKD while identifying novel therapeutic targets. Renal fibrosis, a typical pathological feature of CKD, plays a pivotal role in disrupting normal renal structures and the loss of renal function. Ferroptosis is a recently discovered iron-dependent form of cell death characterized by lipid peroxide accumulation. Ferroptosis has emerged as a potential key player in various diseases and the initiation of organ fibrosis. Substantial evidence suggests that ferroptosis may significantly contribute to the intricate interplay between CKD and its progression. This review comprehensively outlines the intricate relationship between CKD and ferroptosis in terms of iron metabolism and lipid peroxidation, and discusses the current landscape of pharmacological research on ferroptosis, shedding light on promising avenues for intervention. It further illustrates recent breakthroughs in ferroptosis-related regulatory mechanisms implicated in the progression of CKD, thereby providing new insights for CKD treatment. Video Abstract.
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  • 文章类型: Journal Article
    TP53基因,编码p53蛋白,自1979年发现以来一直是研究的重点,在肿瘤抑制中起着至关重要的作用。Ferroptosis,一种以脂质过氧化物积累为特征的细胞死亡的独特形式,自2012年获得认可以来,其地位日益凸显。最近的研究揭示了p53和铁性凋亡之间有趣的联系,对癌症治疗有影响。最近的研究强调p53是癌症治疗的新靶点,影响铁中毒的关键代谢过程。值得注意的是,p53抑制胱氨酸-谷氨酸反转运蛋白SLC7A11的表达,支持p53介导的肿瘤生长抑制。此外,在代谢应激下,p53降低铁凋亡敏感性,帮助癌细胞应对和延缓细胞死亡。p53和铁凋亡之间的这种动态相互作用对各种疾病具有深远的影响。尤其是癌症。这篇综述全面概述了癌细胞中的铁凋亡,阐明p53在调节铁死亡中的作用,并探讨了靶向p53诱导铁凋亡用于癌症治疗的潜力。了解p53和铁凋亡之间的这种复杂关系为开发创新的癌症治疗提供了有希望的途径。
    The TP53 gene, encoding the p53 protein, has been a focal point of research since its 1979 discovery, playing a crucial role in tumor suppression. Ferroptosis, a distinct form of cell death characterized by lipid peroxide accumulation, has gained prominence since its recognition in 2012. Recent studies have unveiled an intriguing connection between p53 and ferroptosis, with implications for cancer therapy. Recent research underscores p53 as a novel target for cancer therapy, influencing key metabolic processes in ferroptosis. Notably, p53 represses the expression of the cystine-glutamate antiporter SLC7A11, supporting p53-mediated tumor growth suppression. Furthermore, under metabolic stress, p53 mitigates ferroptosis sensitivity, aiding cancer cells in coping and delaying cell death. This dynamic interplay between p53 and ferroptosis has far-reaching implications for various diseases, particularly cancer. This review provides a comprehensive overview of ferroptosis in cancer cells, elucidating p53\'s role in regulating ferroptosis, and explores the potential of targeting p53 to induce ferroptosis for cancer therapy. Understanding this complex relationship between p53 and ferroptosis offers a promising avenue for developing innovative cancer treatments.
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  • 文章类型: Journal Article
    几个世纪以来,革兰氏阴性病原体已经感染了人类群体并且是动物和植物中的许多疾病的原因。尽管在治疗方面取得了进步,革兰氏阴性病原体继续进化,其中一些已经发展出多药耐药表型。为了成功控制这些细菌引起的感染,我们需要扩大对宿主-病原体相互作用机制的理解。革兰氏阴性病原体利用一系列效应蛋白来劫持宿主系统以在宿主环境中存活。这些蛋白质通过各种分泌系统分泌到宿主系统中,包括完整的III型分泌系统(T3SS)。T3SS跨越两个细菌膜和一个宿主膜以将效应蛋白(毒力因子)递送到宿主细胞中。这个多方面的过程有多层的监管和各种检查站。在这次审查中,我们强调了这些病原体通过T3SS调节或维持毒力的多种策略,包括调节小分子来感知和与宿主系统通信,以及主调节器,看门人,监护人,以及识别成功的主机联系人的其他效应器。Further,我们讨论了T3SS和其他系统之间的监管联系,像鞭毛和代谢途径,包括三羧酸(TCA)循环,无氧代谢,和严格的细胞反应。
    For centuries, Gram-negative pathogens have infected the human population and been responsible for numerous diseases in animals and plants. Despite advancements in therapeutics, Gram-negative pathogens continue to evolve, with some having developed multi-drug resistant phenotypes. For the successful control of infections caused by these bacteria, we need to widen our understanding of the mechanisms of host-pathogen interactions. Gram-negative pathogens utilise an array of effector proteins to hijack the host system to survive within the host environment. These proteins are secreted into the host system via various secretion systems, including the integral Type III secretion system (T3SS). The T3SS spans two bacterial membranes and one host membrane to deliver effector proteins (virulence factors) into the host cell. This multifaceted process has multiple layers of regulation and various checkpoints. In this review, we highlight the multiple strategies adopted by these pathogens to regulate or maintain virulence via the T3SS, encompassing the regulation of small molecules to sense and communicate with the host system, as well as master regulators, gatekeepers, chaperones, and other effectors that recognise successful host contact. Further, we discuss the regulatory links between the T3SS and other systems, like flagella and metabolic pathways including the tricarboxylic acid (TCA) cycle, anaerobic metabolism, and stringent cell response.
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  • 文章类型: Journal Article
    大多数放线菌的生物合成基因簇(BGC)要么沉默,要么表达低于可检测水平。非遗传方法包括生物相互作用,化学制剂,本文比较了可用于唤醒沉默途径的物理应力。这些非遗传诱导策略通常需要筛查方法,包括一个菌株许多化合物(OSMAC),报告者指导的突变体选择,并且已经开发了高通量诱导物筛选(HiTES)。在诱导放线菌的隐性BGC中应用的不同类型的遗传操作可以归类为全基因组多效和靶向方法,例如操纵全球调控系统,调节基因的调节,核糖体和RNA聚合酶或磷酸肽转移酶的工程。靶向方法,包括通过CRISPR进行基因组编辑,转录因子的突变和BGC启动子的修饰,高度表达的生物合成途径的失活,删除抑制器或唤醒激活器,异源表达,基因簇的重构或重构可用于激活途径,这些途径被预测为在Acinobacteria的基因组挖掘研究中合成新的生物活性结构。在这次审查中,讨论了使用这些方法诱导放线菌BGC的挑战和优势。Further,通过代谢物生物合成的创新方法,甚至可以从已知的放线菌物种中发现作为制药工业药物或农业工业生物肥料所需的新型天然产物。
    Most biosynthetic gene clusters (BGCs) of Actinobacteria are either silent or expressed less than the detectable level. The non-genetic approaches including biological interactions, chemical agents, and physical stresses that can be used to awaken silenced pathways are compared in this paper. These non-genetic induction strategies often need screening approaches, including one strain many compounds (OSMAC), reporter-guided mutant selection, and high throughput elicitor screening (HiTES) have been developed. Different types of genetic manipulations applied in the induction of cryptic BGCs of Actinobacteria can be categorized as genome-wide pleiotropic and targeted approaches like manipulation of global regulatory systems, modulation of regulatory genes, ribosome and engineering of RNA polymerase or phosphopantheteine transferases. Targeted approaches including genome editing by CRISPR, mutation in transcription factors and modification of BGCs promoters, inactivation of the highly expressed biosynthetic pathways, deleting the suppressors or awakening the activators, heterologous expression, or refactoring of gene clusters can be applied for activation of pathways which are predicted to synthesize new bioactive structures in genome mining studies of Acinobacteria. In this review, the challenges and advantages of employing these approaches in induction of Actinobacteria BGCs are discussed. Further, novel natural products needed as drug for pharmaceutical industry or as biofertilizers in agricultural industry can be discovered even from known species of Actinobactera by the innovative approaches of metabolite biosynthesis elicitation.
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  • 文章类型: Journal Article
    与一些低摩尔质量的全氟烷基物质和多氟烷基物质(PFAS)相比,它们被公认是有毒的,持久性,生物蓄积性,和移动,含氟聚合物(FPs)不溶于水,安全,生物惰性,和耐用。这些利基高性能聚合物在其推荐的使用条件下满足13个低关注聚合物(PLC)标准。此外,最近的创新(例如,重点介绍了非氟化表面活性剂在含氟烯烃的水性自由基(共)聚合中的用途)。这篇综述还旨在展示这些具有出色性能的特种聚合物是必不可少的(甚至是不可替代的,因为在类似条件下使用的碳氢化合物聚合物替代品失败)对我们的日常生活(电子产品,能源,光学,物联网,交通运输,等。),并构成一个特殊的家庭,与地球及其海洋上随处可见的其他“常规”C1-C10PFAS分开。此外,一些关于它们回收的信息报告(例如,聚四氟乙烯的解聚,PTFE,进入TFE),报废FPs,和他们的风险评估,循环经济,和法规。各种研究致力于涉及FP的环境,尽管与所有塑料(4.6亿吨)相比,它们的利基体积(年产量为330,300吨)。补充对PFAS的其他审查,缺乏上述数据,这篇综述提出了主要FP生产商所证明的基本策略和应用策略。
    In contrast to some low-molar-mass per- and polyfluoroalkyl substances (PFASs), which are well established to be toxic, persistent, bioaccumulative, and mobile, fluoropolymers (FPs) are water-insoluble, safe, bioinert, and durable. These niche high-performance polymers fulfil the 13 polymer-of-low-concern (PLC) criteria in their recommended conditions of use. In addition, more recent innovations (e.g., the use of non-fluorinated surfactants in aqueous radical (co)polymerization of fluoroalkenes) from industrial manufacturers of FPs are highlighted. This review also aims to show how these specialty polymers endowed with outstanding properties are essential (even irreplaceable, since hydrocarbon polymer alternatives used in similar conditions fail) for our daily life (electronics, energy, optics, internet of things, transportation, etc.) and constitute a special family separate from other \"conventional\" C1-C10 PFASs found everywhere on Earth and its oceans. Furthermore, some information reports on their recycling (e.g., the unzipping depolymerization of polytetrafluoroethylene, PTFE, into TFE), end-of-life FPs, and their risk assessment, circular economy, and regulations. Various studies are devoted to environments involving FPs, though they present a niche volume (with a yearly production of 330,300 t) compared to all plastics (with 460 million t). Complementary to other reviews on PFASs, which lack of such above data, this review presents both fundamental and applied strategies as evidenced by major FP producers.
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