Transcriptome Analysis Reveals the Potential Mechanism of MAP34-B Targeting Pasteurella multocida
Junnan Dai1, Yue Peng1, Fan Zheng1
1Anhui Key Laboratory of Eco-Engineering and Bio-Technique, School of Life Sciences, Anhui University, Hefei 230601, China.
Microorganisms
|February 27, 2026
Summary
The antimicrobial peptide MAP34-B disrupts Pasteurella multocida by damaging its cell membrane and inhibiting protein synthesis. This finding supports MAP34-B
Area of Science:
- Microbiology
- Molecular Biology
- Genomics
Background:
- Pasteurella multocida is a significant zoonotic pathogen causing economic losses in poultry.
- The antimicrobial peptide MAP34-B shows activity against P. multocida, but its mechanism is unknown.
Purpose of the Study:
- To elucidate the antibacterial mechanism of MAP34-B against Pasteurella multocida.
- To investigate the effects of MAP34-B on gene expression in P. multocida.
Main Methods:
- Transcriptomic profiling using RNA sequencing (RNA-seq) on P. multocida strain HB03.
- Treatment with 47.4 µM MAP34-B for one hour.
- KEGG pathway enrichment analysis.
Main Results:
- 281 differentially expressed genes were identified (161 upregulated, 120 downregulated).
- The Ribosome pathway was significantly affected, with upregulation of several ribosomal protein genes (e.g., rps2, rpl3).
- Expression of membrane-associated genes (e.g., SecE, ompR) was altered, suggesting membrane disruption.
Conclusions:
- MAP34-B's antibacterial activity involves impairing cell membrane integrity.
- MAP34-B inhibits bacterial protein synthesis.
- These findings provide a basis for MAP34-B's potential use in treating bacterial infections.
