Reciprocal antibiotic collateral sensitivity in Burkholderia multivorans
| Autor: | Todd R. Steck, Logan G. Kavanaugh, J. Nicole Flanagan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Microbiology (medical) Candidate gene Cystic Fibrosis medicine.drug_class Burkholderia 030106 microbiology Antibiotics Drug Collateral Sensitivity Microbial Sensitivity Tests medicine.disease_cause beta-Lactams Article Microbiology 03 medical and health sciences 0302 clinical medicine Antibiotic resistance Drug Resistance Bacterial medicine Humans Pharmacology (medical) 030212 general & internal medicine Lung Mutation biology Strain (chemistry) Whole Genome Sequencing Burkholderia multivorans Burkholderia Infections General Medicine biology.organism_classification Anti-Bacterial Agents Infectious Diseases Bacteria Genome Bacterial |
| Zdroj: | Int J Antimicrob Agents |
| ISSN: | 1872-7913 |
| Popis: | Antibiotic collateral sensitivity (CS) occurs when a bacterium that acquires resistance to a treatment drug exhibits decreased resistance to a different drug. Here we identify reciprocal CS networks and candidate genes in Burkholderia multivorans. B. multivorans was evolved to become resistant to each of six antibiotics. The antibiogram of the evolved strain was compared to the immediate parental strain to determine CS and cross-resistance (CR). The evolution process was continued for each resistant strain. CS interactions were observed in 170 of 279 evolved strains. CS patterns grouped into two clusters based on the treatment drug being a beta-lactam antibiotic or not. Reciprocal pairs of CS antibiotics arose in at least 25% of all evolved strains. Sixty-eight evolved strains were subjected to whole-genome sequencing and the resulting mutation patterns were correlated with antibiograms. Analysis revealed there was no single gene responsible for collateral sensitivity (CS), and that CS seen in B. multivorans is likely due to a combination of specific and non-specific mutations. The frequency of reciprocal CS, and the degree to which resistance changed, suggests a long-term treatment strategy; when resistance to one drug occurs, switch to use of the other member of the reciprocal pair. This switching could theoretically be continued indefinitely, allowing life-long treatment of chronic infections with just two antibiotics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect