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相关概念视频

Preclinical Development: Overview01:28

Preclinical Development: Overview

5.7K
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 Trials: Overview01:11

Clinical Trials: Overview

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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

Drug Discovery: Overview

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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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Drug Administration and Therapy Phases: Overview01:26

Drug Administration and Therapy Phases: Overview

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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.
The pharmaceutical phase focuses on leveraging the physicochemical properties of the drug to design and manufacture an effective product. Variants include orally administered tablets or capsules, topical creams or ointments, and parenteral-delivery solutions or emulsions.
The pharmacokinetic phase...
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In Vitro Drug Release Testing: Overview, Development and Validation01:10

In Vitro Drug Release Testing: Overview, Development and Validation

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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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Updated: Jan 7, 2026

Drug Repurposing Hypothesis Generation Using the "RE:fine Drugs" System
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药物开发 药物开发

U Hang Chan1,2, Fengling Li2, Frances M Bashore3,4

  • 1University of Toronto, Toronto, ON, Canada.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新的测定方法,以发现与阿尔茨海默氏症相关的RNA基酶MDA5,LGP2和DDX1的小分子抑制剂.

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科学领域:

  • 神经科学是一个神经科学.
  • 生物化学 生物化学
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 阿尔茨海默病 (AD) 药物发现需要超越粉样蛋白和蛋白的新目标.
  • 生物信息学分析确定了RNA螺旋酶MDA5,LGP2和DDX1作为高优先级的AD风险基因.
  • 这些酶参与天生的免疫力,并与AD病理学有潜在的联系.

研究的目的:

  • 开发针对MDA5,LGP2和DDX1.1的新型小分子化学探针.
  • 阐明这些RNA螺旋体在阿尔茨海默氏症病原发生中的作用.
  • 建立一种高通量选试验,用于识别这些标的抑制剂.

主要方法:

  • 开发一种基于生物发光的ATPase试验,用于动力特征.
  • 利用DNA编码化学库 (DEL) 选用于小分子命中发现.
  • 通过ATPase测定,SPR,DSF和19F-NMR进行击中确认.

主要成果:

  • 为了选MDA5,LGP2和DDX1抑制剂,建立了一个强大的高通量试验.
  • 通过DEL-ML查确定了一种选择性MDA5抑制剂,其IC50为8μM.
  • 确定的抑制剂被正交证实,并作为药物发现的起点.

结论:

  • 开发的试验使小分子抑制剂的有效选和优化成为可能.
  • 发现了MDA5的第一类小分子抑制剂.
  • 这种抑制剂可用于进一步研究MDA5在阿尔茨海默病中的作用.