FDA, U. S. Food and Drug Administration

FDA,美国食品和药物管理局
  • 文章类型: Journal Article
    未经评估:在本文中,作者讨论了他们如何利用斯里兰卡杜氏肌营养不良症(DMD)的基因突变数据,脊髓性肌萎缩症(SMA),脊髓小脑性共济失调(SCA)和亨廷顿病(HD)患者,并比较南亚国家的现有文献,以确定DMD可用基因治疗的潜在候选者,SMA,SCA和HD患者。
    未经证实:罕见疾病患者(n=623),其特征性临床表现疑似HD,SCA,使用多重连接依赖性探针扩增(MLPA)对SMA和肌营养不良进行遗传证实,和单重PCR。在“Wiley全球基因治疗试验数据库”中进行了一项调查,以确定DMD,SMA,SCA,以及截至2021年4月在全球范围内进行的HD基因治疗临床试验。为了确定其他邻国的基因治疗候选者,我们将我们的发现与印度和巴基斯坦的可用文献进行了比较,这些文献使用了相同的分子诊断方案来进行我们的研究。
    UNASSIGNED:从623例疑似HD的罕见疾病患者的总体队列中,SCA,SMA和肌营养不良,n=343(55%)[肌营养不良-65%;(DMD-139,Becker肌营养不良-BMD-11),SCA类型1-3-53%(SCA1-61,SCA2-23,SCA3-39),HD-52%(45)和SMA-34%(22)]患者通过MLPA和单重PCR的分子诊断为阳性。斯里兰卡共有147名患者接受了可用的基因治疗;[DMD-83,SMA-15和HD-49]被鉴定。斯里兰卡的发现与来自印度和巴基斯坦的现有文献的比较确定了来自这三个南亚国家的总共1257名患者[DMD-1076、SMA-57和HD-124]适合于现有的基因治疗试验。DMD,SMA,截至2021年4月,全球进行的HD基因治疗临床试验(113项研究)主要(99%)集中在高收入国家(HIC)和中高收入国家(UMIC)。然而,关于反义寡核苷酸(ASO)用于治疗SCA的潜在用途的研究尚未达到临床试验。
    未经评估:大多数针对神经退行性疾病和神经肌肉疾病的基因疗法主要在西方人群中进行了疗效评估。没有针对DMD的多中心基因治疗临床试验中心,南亚地区的SMA和HD,导致对其他人群中此类个性化治疗的安全性和有效性缺乏了解,包括南亚人.通过促进研究人员之间的合作,临床医生,患者倡导团体,发展中国家遗传疾病社区的基因治疗计划中的政府和行业将把全球北方和全球南方联系起来,并为“我们可以共同发挥作用”的座右铭注入生命。
    UNASSIGNED: In this article, the authors discuss how they utilized the genetic mutation data in Sri Lankan Duchenne muscular dystrophy (DMD), Spinal muscular atrophy (SMA), Spinocerebellar ataxia (SCA) and Huntington\'s disease (HD) patients and compare the available literature from South Asian countries to identifying potential candidates for available gene therapy for DMD, SMA, SCA and HD patients.
    UNASSIGNED: Rare disease patients (n = 623) with the characteristic clinical findings suspected of HD, SCA, SMA and Muscular Dystrophy were genetically confirmed using Multiplex Ligation Dependent Probe Amplification (MLPA), and single plex PCR. A survey was conducted in the \"Wiley database on Gene Therapy Trials Worldwide\" to identify DMD, SMA, SCA, and HD gene therapy clinical trials performed worldwide up to April 2021. In order to identify candidates for gene therapy in other neighboring countries we compared our findings with available literature from India and Pakistan which has utilized the same molecular diagnostic protocol to our study.
    UNASSIGNED: From the overall cohort of 623 rare disease patients with the characteristic clinical findings suspected of HD, SCA, SMA and Muscular Dystrophy, n = 343 (55%) [Muscular Dystrophy- 65%; (DMD-139, Becker Muscular Dystrophy -BMD-11), SCA type 1-3-53% (SCA1-61,SCA2- 23, SCA3- 39), HD- 52% (45) and SMA- 34% (22)] patients were positive for molecular diagnostics by MLPA and single plex PCR. A total of 147 patients in Sri Lanka amenable to available gene therapy; [DMD-83, SMA-15 and HD-49] were identified. A comparison of Sri Lankan finding with available literature from India and Pakistan identified a total of 1257 patients [DMD-1076, SMA- 57, and HD-124] from these three South Asian Countries as amenable for existing gene therapy trials. DMD, SMA, and HD gene therapy clinical trials (113 studies) performed worldwide up to April 2021 were concentrated mostly (99%) in High Income Countries (HIC) and Upper Middle-Income Countries (UMIC). However, studies on the potential use of anti-sense oligonucleotides (ASO) for treatment of SCAs have yet to reach clinical trials.
    UNASSIGNED: Most genetic therapies for neurodegenerative and neuromuscular disorders have been evaluated for efficacy primarily in Western populations. No multicenter gene therapy clinical trial sites for DMD, SMA and HD in the South Asian region, leading to lack of knowledge on the safety and efficacy of such personalized therapies in other populations, including South Asians. By fostering collaboration between researchers, clinicians, patient advocacy groups, government and industry in gene therapy initiatives for the inherited-diseases community in the developing world would link the Global North and Global South and breathe life into the motto \"Together we can make a difference\".
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  • 文章类型: Journal Article
    这篇综述涵盖了肽抗生素领域的一些最新进展,重点是具有新颖或既定作用方式并在动物感染模型中表现出功效的化合物。新的药物发现方法,线性和大环肽抗生素,讨论了诸如多粘菌素之类的脂肽以及位于质膜或细菌细胞外膜中的靶向肽。
    This review covers some of the recent progress in the field of peptide antibiotics with a focus on compounds with novel or established mode of action and with demonstrated efficacy in animal infection models. Novel drug discovery approaches, linear and macrocyclic peptide antibiotics, lipopeptides like the polymyxins as well as peptides addressing targets located in the plasma membrane or in the outer membrane of bacterial cells are discussed.
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  • 文章类型: Journal Article
    过氧化物酶体增殖物激活受体γ(PPARγ)是与多种转录因子结合的转录共激活因子。PPARγ共激活因子1(PGC-1)在不同组织中具有广泛的生物学效应,并在调节氧化代谢中起关键作用,从而调节活性氧的产生,自噬,和线粒体生物发生。由于这些发现,大量的研究,旨在确定PGC-1在神经肌肉系统中的作用,已经表明PGC-1可能是针对神经肌肉疾病的疗法的有希望的靶标。其中,一些证据表明,与PGC-1α相关的各种信号通路在肌营养不良中失调,导致线粒体氧化磷酸化能力降低,活性氧(ROS)产生增加。根据这些结果,任何旨在激活PGC-1的干预措施都可能有助于改善肌营养不良的进展.PGC-1α受不同病理生理/药理学刺激的影响。据报道,天然产物对PPARγ活化具有调节作用,与合成药物相比副作用较少。一起来看,这篇综述总结了杜氏肌营养不良的最新知识,关注天然化合物的潜在影响,作为PGC-1α的调节剂。
    Peroxisome proliferator-activated receptor γ (PPARγ) is a transcriptional coactivator that binds to a diverse range of transcription factors. PPARγ coactivator 1 (PGC-1) coactivators possess an extensive range of biological effects in different tissues, and play a key part in the regulation of the oxidative metabolism, consequently modulating the production of reactive oxygen species, autophagy, and mitochondrial biogenesis. Owing to these findings, a large body of studies, aiming to establish the role of PGC-1 in the neuromuscular system, has shown that PGC-1 could be a promising target for therapies targeting neuromuscular diseases. Among these, some evidence has shown that various signaling pathways linked to PGC-1α are deregulated in muscular dystrophy, leading to a reduced capacity for mitochondrial oxidative phosphorylation and increased reactive oxygen species (ROS) production. In the light of these results, any intervention aimed at activating PGC-1 could contribute towards ameliorating the progression of muscular dystrophies. PGC-1α is influenced by different patho-physiological/pharmacological stimuli. Natural products have been reported to display modulatory effects on PPARγ activation with fewer side effects in comparison to synthetic drugs. Taken together, this review summarizes the current knowledge on Duchenne muscular dystrophy, focusing on the potential effects of natural compounds, acting as regulators of PGC-1α.
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  • 文章类型: Journal Article
    在临床治疗中靶向程序性细胞死亡配体1(PD-L1)/程序性细胞死亡1(PD-1)途径的免疫治疗策略在治疗多种类型的癌症方面取得了显著成功。然而,由于肿瘤和个体免疫系统的异质性,PD-L1/PD-1阻断在控制许多患者的恶性肿瘤方面仍然显示出缓慢的反应率。越来越多的证据表明,抗PD-L1/抗PD-1治疗的有效反应需要建立一个完整的免疫周期。在免疫周期的任何步骤中的损伤是免疫疗法失败的最重要原因之一。免疫周期的损伤可以通过表观遗传修饰来恢复,包括重新编程肿瘤相关免疫的环境,通过增加肿瘤抗原的呈递来引发免疫反应,通过调节T细胞运输和再激活。因此,PD-L1/PD-1阻断和表观遗传药物的合理组合可能为免疫系统再训练和改善检查点阻断治疗的临床结局提供巨大潜力.
    Immunotherapy strategies targeting the programmed cell death ligand 1 (PD-L1)/programmed cell death 1 (PD-1) pathway in clinical treatments have achieved remarkable success in treating multiple types of cancer. However, owing to the heterogeneity of tumors and individual immune systems, PD-L1/PD-1 blockade still shows slow response rates in controlling malignancies in many patients. Accumulating evidence has shown that an effective response to anti-PD-L1/anti-PD-1 therapy requires establishing an integrated immune cycle. Damage in any step of the immune cycle is one of the most important causes of immunotherapy failure. Impairments in the immune cycle can be restored by epigenetic modification, including reprogramming the environment of tumor-associated immunity, eliciting an immune response by increasing the presentation of tumor antigens, and by regulating T cell trafficking and reactivation. Thus, a rational combination of PD-L1/PD-1 blockade and epigenetic agents may offer great potential to retrain the immune system and to improve clinical outcomes of checkpoint blockade therapy.
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  • 文章类型: Journal Article
    细胞凋亡,尤其是内在的线粒体细胞死亡途径,受BCL-2家族蛋白调控。凋亡机制的缺陷是细胞逃避细胞死亡和癌变的主要机制之一。靶向凋亡缺陷,通过直接抑制BCL-2家族蛋白或通过调节途径,可以恢复细胞对细胞死亡的敏感性。这篇综述将集中在BCL-2家族蛋白的方面,它们与激酶通路的相互作用,以及新型靶向药物如何帮助克服凋亡障碍。此外,功能测定,例如BH3配置文件,可能有助于预测对化学疗法的反应,并通过确定启动细胞死亡的线粒体阈值来帮助选择联合疗法。
    Apoptosis, especially the intrinsic mitochondrial cell death pathway, is regulated by the BCL-2 family of proteins. Defects in apoptotic machinery are one of the main mechanisms that cells employ to evade cell death and become cancerous. Targeting the apoptotic defects, either by direct inhibition of BCL-2 family proteins or through modulation of regulatory pathways, can restore cell sensitivity to cell death. This review will focus on the aspects of BCL-2 family proteins, their interactions with kinase pathways, and how novel targeted agents can help overcome the apoptotic blockades. Furthermore, functional assays, such as BH3 profiling, may help in predicting responses to chemotherapies and aid in the selection of combination therapies by determining the mitochondrial threshold for initiating cell death.
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