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Related Concept Videos

Inhibitors of Bacterial Protein Synthesis01:25

Inhibitors of Bacterial Protein Synthesis

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Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
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Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
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Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
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Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
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The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
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Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
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Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
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Antisense antimicrobial therapeutics.

Erin K Sully1, Bruce L Geller1

  • 1Department of Microbiology, 226 Nash Hall, Oregon State University, Corvallis, OR 97331-3804, USA.

Current Opinion in Microbiology
|July 5, 2016
PubMed
Summary
This summary is machine-generated.

Antisense antimicrobials offer a novel approach to combatting infections by precisely targeting specific genes. This technology shows promise against antibiotic resistance and can be rapidly developed for various pathogens.

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Area of Science:

  • Molecular Biology
  • Antimicrobial Therapeutics
  • Drug Discovery

Background:

  • Broad-spectrum antibiotics can harm beneficial bacteria and contribute to antimicrobial resistance.
  • Antisense antimicrobials offer a highly specific alternative to traditional antibiotics.
  • The rise of antibiotic resistance necessitates the development of novel therapeutic strategies.

Purpose of the Study:

  • To review current reports on antisense antimicrobials.
  • To highlight the potential of antisense technology in addressing the antibiotic-resistance crisis.
  • To discuss the advantages of antisense antimicrobials over conventional antibiotics.

Main Methods:

  • Antisense technology utilizes synthetic oligomers to silence specific gene expression.
  • The sequence-specificity of these oligomers allows for targeted microbial action.
  • Platform technology enables rapid design and synthesis for diverse microbial targets.

Main Results:

  • Antisense antimicrobials demonstrate specificity, minimizing impact on commensal bacteria.
  • They pose minimal risk to human gene expression due to sequence-specificity and short length.
  • Resistance mechanisms effective against standard antibiotics do not impact antisense antimicrobials.

Conclusions:

  • Antisense antimicrobials represent a flexible, rational, and rapid drug development platform.
  • This technology holds significant potential for combating the global antibiotic-resistance crisis.
  • Current research indicates efficacy against viruses, parasites, and bacteria.