Genome sequence of Acinetobacter baumannii MDR-TJ
Feng Gao1, Yue Wang, Yan-Jie Liu
1Department of Physics, Tianjin University, Tianjin 300072, China.
Journal of Bacteriology
|March 15, 2011
Summary
This study sequenced the Acinetobacter baumannii MDR-TJ strain, a multidrug-resistant bacterium. Understanding its genome aids in developing new strategies against this challenging pathogen.
Area of Science:
- Microbiology
- Genomics
- Infectious Diseases
Background:
- Acinetobacter baumannii is a significant opportunistic pathogen.
- This bacterium is known for its high levels of antibiotic resistance.
- Multidrug resistance (MDR) in Acinetobacter baumannii poses a global health threat.
Purpose of the Study:
- To determine the complete genome sequence of the MDR-TJ strain of Acinetobacter baumannii.
- To provide genomic insights into the multidrug resistance mechanisms of this specific strain.
Main Methods:
- Isolation of the MDR-TJ strain from a clinical sample.
- Whole-genome sequencing using 454 pyrosequencing and paired-end sequencing (Roche Genome Sequencer FLX).
- Bioinformatic analysis to generate a scaffolded genome assembly.
Main Results:
- The genome sequence of Acinetobacter baumannii MDR-TJ was successfully generated.
- The strain exhibits resistance to a wide range of antibiotics, including penicillin, cephalosporins, aminoglycosides, quinolones, and imipenem.
- The genomic data provides a foundation for understanding the genetic basis of its resistance.
Conclusions:
- The genome sequence of Acinetobacter baumannii MDR-TJ offers valuable information for studying antibiotic resistance.
- This data can contribute to the development of novel therapeutic approaches against MDR Acinetobacter baumannii infections.
Related Concept Videos
Mechanism of Antibiotic Resistance in MRSA
Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
Clinical Significance of Antibiotic Resistance
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...

