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Related Experiment Videos

Substance P: structure, function, and therapeutics.

Prasanna Datar1, Sudha Srivastava, Evans Coutinho

  • 1Department of Chemistry, Bombay College of Pharmacy, Kalina, Mumbai, India.

Current Topics in Medicinal Chemistry
|February 3, 2004
PubMed
Summary

Structural studies of Substance P (SP) and its receptors have advanced significantly. New non-peptide antagonists targeting neurokinin (NK) receptors show promise for treating conditions like emesis and depression.

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Area of Science:

  • Pharmacology
  • Structural Biology
  • Medicinal Chemistry

Background:

  • Mammalian tachykinin Substance P (SP) structural determination has been challenging since 1931.
  • Research now focuses on neurokinin (NK) receptors (NK1, NK2, NK3) using advanced molecular techniques.

Purpose of the Study:

  • To review the structural characteristics of SP, its analogs, and antagonists.
  • To examine the structural properties of NK receptors.
  • To explore structure-activity relationships for improved SP antagonist therapeutics.

Main Methods:

  • Genetics, cloning, receptor engineering, mutagenesis, and modeling were used to study NK receptors.
  • Development of non-peptide NK1 receptor antagonists.
  • Identification of antagonists from natural sources.

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Main Results:

  • Knowledge of NK receptor structure aids in developing effective SP antagonists.
  • Simultaneous blockade of multiple NK receptors shows therapeutic potential for emesis, depression, and pulmonary obstructive diseases.
  • Natural product antagonists enhance the therapeutic landscape.

Conclusions:

  • Understanding SP and NK receptor structures is crucial for developing novel therapeutics.
  • Multi-receptor blockade strategies offer promising treatment avenues.
  • Structure-activity relationship studies are key to optimizing SP antagonist efficacy.