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Nanomechanics of Drug-target Interactions and Antibacterial Resistance Detection
Published on: October 25, 2013
Whole Proteome-Based Therapeutic Targets Annotation and Designing of Multi-Epitope-Based Vaccines against the
Metab Alharbi1, Abdulrahman Alshammari1, Abdullah F Alasmari1
1Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Abstract:
This study involved therapeutic targets mining for the extremely drug-resistant bacterial species called Alcaligenes faecalis, which is known to infect humans. The infections caused by this species in different parts of the human body have been linked with a higher degree of resistance to several classes of antibiotics. Meanwhile, alternate therapeutic options are needed to treat these bacterial infections in clinical settings. In the current study, a subtractive proteomics approach was adapted to annotate the whole proteome of Alcaligenes faecalis and prioritize target proteins for vaccine-related therapeutics design. This was followed by targeted protein-specific immune epitope prediction and prioritization. The shortlisted epitopes were further subjected to structural design and in silico validation of putative vaccines against Alcaligenes faecalis. The final vaccine designs were also evaluated for potential interaction analysis with human TLR-2 through molecular docking. Finally, the putative vaccines were subjected to in silico cloning and immune simulation approaches to ensure the feasibility of the target-specific vaccine constructs in further experimental designs.
Insights
This study identifies new vaccine targets against drug-resistant Alcaligenes faecalis infections. Computational methods were used to design and validate potential vaccines, offering hope for novel antimicrobial therapies.
Area of Science:
- Microbiology
- Vaccinology
- Computational Biology
Background:
- Alcaligenes faecalis is a multidrug-resistant bacterium causing human infections.
- Existing antibiotics are increasingly ineffective against this pathogen.
- Novel therapeutic strategies, including vaccines, are urgently needed.
Purpose of the Study:
- To identify potential therapeutic targets in Alcaligenes faecalis.
- To design and validate in silico putative vaccines against this bacterium.
- To assess the feasibility of these vaccine candidates for further development.
Main Methods:
- Subtractive proteomics for whole proteome annotation.
- Immune epitope prediction and prioritization.
- In silico vaccine design, structural validation, and molecular docking with human TLR-2.
- In silico cloning and immune simulation.
Main Results:
- Identification and prioritization of specific target proteins within Alcaligenes faecalis.
- Successful in silico design and validation of putative vaccine constructs.
- Demonstrated potential interaction with human TLR-2, suggesting immunogenicity.
- Feasibility assessment for vaccine construct development confirmed through simulation.
Conclusions:
- This study presents a computational pipeline for developing novel vaccines against Alcaligenes faecalis.
- The identified vaccine candidates show promise for combating drug-resistant bacterial infections.
- In silico validation provides a strong foundation for experimental vaccine development.
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