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相关概念视频

Preclinical Development: Overview01:28

Preclinical Development: Overview

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Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
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Drug Discovery: Overview01:26

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Drug discovery is a multifaceted process involving extensive screening, testing, and optimization of lead compounds to identify potential new drugs for therapeutic use. It combines several approaches, including screening large numbers of natural products, chemical modification of known active molecules, identification of new drug targets, and rational design based on biological mechanisms and drug-receptor structure. These approaches are carried out in both academic research laboratories and...
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Drugs, the chemical agents used in diagnosing, treating, or preventing diseases, undergo a four-phase process of development: pharmaceutic, pharmacokinetics, pharmacodynamics, and therapeutic.
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In Vitro Drug Release Testing: Overview, Development and Validation01:10

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In vitro dissolution and drug release tests assess how quickly and how much of a drug is released from its dosage form into an aqueous medium under standardized laboratory conditions. These tests are essential tools in pharmaceutical development and quality assurance, offering insight into the drug's performance before clinical use.During formulation development, dissolution testing identifies incomplete or inconsistent drug release issues. It also supports decisions on selecting the optimal...
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Drug Regulation01:25

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Drug regulation encompasses the management of drug usage by evaluating its safety and efficacy through assessments conducted by regulatory authorities. Regrettably, the history of drug regulation is marred by several catastrophic events. One such incident is the Elixir Sulfanilamide tragedy, in which the toxic compound diethyl glycol was included in a sweet-tasting medication, leading to numerous fatalities. This event prompted the enactment of the Food, Drug, and Cosmetic Act in 1938. Under...
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药物开发 药物开发

Yunxiao Ren1, Andrew A Pieper2,3,4,5, Jeffrey L Cummings6

  • 1Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA.

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概括
此摘要是机器生成的。

这项研究引入了一种新的单细胞数字双胞胎框架,用于识别阿尔茨海默病 (AD) 药物标. 这种方法优先考虑基因,并建议13种可重复使用的药物用于AD治疗.

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科学领域:

  • 神经科学是一个神经科学.
  • 基因组学就是基因组学.
  • 计算生物学 计算生物学

背景情况:

  • 阿尔茨海默病 (AD) 是一种复杂的神经退行性疾病,缺乏有效的治疗方法.
  • 数字双胞胎 (DTs),整合人工智能和多组学,为表征疾病异质性和识别治疗点提供了一种新的方法.
  • DTs能够实时模拟疾病,并为个性化治疗策略提供动态更新.

研究的目的:

  • 开发一个单细胞数字双胞胎 (scDT) 框架来建模AD进展.
  • 通过使用综合的多omics数据来识别AD相关基因和潜在的候选药物.
  • 优先考虑治疗目标并促进对AD的药物重新定位.

主要方法:

  • 集成的单核RNA-seq (snRNA-seq) 和ATAC-seq (snATAC-seq) 数据来自84名捐赠者,跨越四个AD神经病理变化 (ADNC) 阶段.
  • 构建的细胞类型特定的转录因子 (TF) -目标基因调节网络.
  • 应用基因组丰富分析 (GSEA) 和用于基因和药物优先级的网络近距离分析.

主要成果:

  • 在AD进展过程中,在六种主要细胞类型中确定了不同的基因表达动态.
  • 通过将GWAS位点与特定细胞类型的cis调节性DNA元素 (cCREs) 集成,发现了141个ADNC相关基因.
  • 突出了13种潜在的可重复使用药物,包括与ADNC相关的基因相关的胺和白醇.

结论:

  • 演示了一个单细胞数字双胞胎框架,用于在AD.中特定细胞类型的目标识别.
  • 该scDT框架显示,在阿尔茨海默病和相关痴呆症中药物再利用具有前途.
  • 这种方法有助于发现神经退行性疾病的新疗法策略.