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Drug design is a dynamic field that involves discovering and developing new medications based on specific biological targets. This process heavily relies on structure-activity relationships (SAR) and quantitative structure-activity relationships (QSAR) to guide the design and optimization of efficient drugs.
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Drug Repurposing Hypothesis Generation Using the "RE:fine Drugs" System
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Accelerating space radiation countermeasure development through drug repurposing.

P B Madrid1, P Y Chang1

  • 1SRI International, Biosciences Division, Menlo Park CA United States.

Life Sciences in Space Research
|November 6, 2022
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Summary
This summary is machine-generated.

Drug repurposing offers a faster path to developing space radiation countermeasures. Evaluating existing drugs accelerates the creation of safe and effective MCM for long-duration spaceflight missions.

Keywords:
CarcinogenesisDrug repurposingRadiation countermeasure development

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Area of Science:

  • Space radiation biology
  • Aerospace medicine
  • Pharmacology

Background:

  • Developing safe and effective radiation countermeasures (MCM) for long-duration spaceflight is complex due to radiation biology and stringent safety needs.
  • Limited clinically-validated molecular targets and preclinical model limitations hinder MCM development.
  • Existing FDA-approved drugs offer a viable alternative for accelerating countermeasure development.

Purpose of the Study:

  • To evaluate the strategy of drug repurposing for accelerating the development of space radiation countermeasures.
  • To leverage existing drugs with established safety and pharmacokinetic profiles for spaceflight applications.

Main Methods:

  • Drug repurposing strategy focusing on FDA-approved drugs.
  • Assessment of advantages including manufacturing, safety data, and pharmacokinetics.
  • Consideration of limitations and potential for tailored development through reformulation and combination therapies.

Main Results:

  • Drug repurposing bypasses de novo drug discovery challenges.
  • Utilizes drugs with established human clinical safety data and known dosing.
  • Offers a pathway to mitigate risks and costs associated with traditional drug development.

Conclusions:

  • Drug repurposing is an attractive and efficient strategy for developing MCM for long-duration space missions.
  • Repurposed drugs can be optimized for specific indications, enhancing their utility.
  • This approach accelerates the delivery of critical radiation protection for astronauts.