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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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Developing drug molecules for therapy with carbon monoxide.

Carlos C Romão1, Walter A Blättler, João D Seixas

  • 1Alfama Lda., Taguspark, núcleo central 267, 2740-122 Porto Salvo, Portugal. ccr@itqb.unl.pt

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Carbon Monoxide (CO) shows therapeutic potential but faces toxicity challenges. Novel CO-releasing molecules (CO-RMs) offer a safer delivery method, paving the way for clinical applications.

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Area of Science:

  • Biomedical science
  • Chemical biology
  • Pharmacology

Background:

  • Carbon Monoxide (CO) exhibits therapeutic benefits in preclinical models but its gaseous form poses toxicity risks.
  • Elevated carboxyhemoglobin (COHb) levels from gaseous CO limit its clinical use.
  • Developing safe and effective CO delivery methods is crucial for therapeutic applications.

Purpose of the Study:

  • To review the biological and chemical properties of CO.
  • To summarize the current state of CO-releasing molecule (CO-RM) development.
  • To establish principles for designing next-generation CO-RMs for human clinical use.

Main Methods:

  • Review of existing literature on CO biology and chemistry.
  • Analysis of preclinical studies involving CO and CO-RMs.
  • Evaluation of the suitability of first-generation CO-RMs for human trials.

Main Results:

  • CO gas has demonstrated therapeutic effects in animal studies.
  • CO-releasing molecules (CO-RMs) can deliver CO in vivo and mimic therapeutic benefits.
  • Current CO-RMs are not suitable for human clinical applications due to safety concerns.

Conclusions:

  • Controlled, localized CO delivery via CO-RMs is key to overcoming toxicity.
  • Further development is needed to create safe and effective CO-RMs for human therapeutics.
  • Next-generation CO-RMs require careful design based on CO's biological and chemical behavior.