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Related Concept Videos

Protein-protein Interfaces02:04

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...
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Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...
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Parasitism is a form of microbial interaction in which parasitic microbes exploit a host organism for nutrients and shelter, often at the host's expense. Unlike mutualistic relationships, where both organisms benefit, parasitism benefits only the parasite and harms the host.Classification of ParasitesMicrobial parasites are broadly classified based on their location relative to the host.Ectoparasites remain on the host’s surface, such as the skin or outer tissues, drawing nutrients...
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Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...
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Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...
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Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...

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Targeting protein-protein interactions for parasite control.

Christina M Taylor1, Kerstin Fischer, Sahar Abubucker

  • 1Department of Genetics, The Genome Center, Washington University School of Medicine, St. Louis, Missouri, United States of America.

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|May 11, 2011
PubMed
Summary

This study identifies novel drug targets by analyzing protein-protein interactions (PPIs) in parasitic worms. Targeting these conserved interactions offers a new strategy for developing broad-spectrum anti-infective drugs.

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Published on: January 26, 2016

Area of Science:

  • Computational Biology
  • Drug Discovery
  • Parasitology

Background:

  • Existing anti-infective drugs face challenges from resistance and side effects.
  • Current drug discovery often targets single proteins, overlooking crucial protein-protein interactions (PPIs).
  • Parasitic worms cause significant global health and economic burdens, necessitating new therapeutic strategies.

Purpose of the Study:

  • To computationally identify and prioritize novel drug targets within parasitic worms.
  • To explore the potential of targeting conserved protein-protein interactions (PPIs) as a next-generation anti-infective strategy.
  • To develop a methodology applicable to a wide range of parasitic pathogens.

Main Methods:

  • Utilized whole genome data from six parasitic and one free-living worm species, plus two host genomes.
  • Grouped proteins into orthologous sets and species-specific bins to identify conserved and unique proteins.
  • Employed two protein-protein interaction (PPI) databases to find interactions, prioritizing those involving unique helminth proteins and features.
  • Scored potential drug targets using RNAi phenotype, homology to the Protein DataBank (PDB), EST data, Gene Ontology (GO) annotation, and druggability.

Main Results:

  • Identified several protein-protein interactions (PPIs) as potential drug targets against parasitic worms.
  • Highlighted conserved essential proteins and their interactions as valuable targets for broad-control strategies.
  • Observed co-localization of expression for some identified interactions in distinct parasitic worm species, validating the approach.

Conclusions:

  • Protein-protein interactions (PPIs) represent a promising avenue for novel anti-parasitic drug development.
  • The developed computational approach is effective for identifying conserved, essential PPIs as drug targets.
  • This methodology can be expanded to other pathogens as more genomic and PPI data become available.