Genomic Changes in Helicobacter from Humans to Large Cats
Author Information
Author(s): Eppinger Mark, Baar Claudia, Linz Bodo, Raddatz Günter, Lanz Christa, Keller Heike, Morelli Giovanna, Gressmann Helga, Achtman Mark, Schuster Stephan C
Primary Institution: Pennsylvania State University
Hypothesis
What genomic changes occurred when Helicobacter jumped from early humans to large felines?
Conclusion
The study found that Helicobacter acinonychis likely evolved from Helicobacter pylori through a host jump from early humans to large felines around 200,000 years ago.
Supporting Evidence
- The genomic sequence of H. acinonychis strain Sheeba was determined.
- Phylogenetic analyses indicated a close relationship between H. acinonychis and H. pylori.
- Unique features in the Sheeba genome suggest adaptations for survival in feline hosts.
- Gene fragmentation was observed in the Sheeba genome, indicating evolutionary changes.
- Horizontal gene transfer may have contributed to the adaptation of H. acinonychis.
Takeaway
Scientists studied a bacteria that moved from humans to big cats and found that it changed a lot to survive in its new home.
Methodology
The genomic sequence of Helicobacter acinonychis strain Sheeba was determined and compared to Helicobacter pylori genomes.
Limitations
The study primarily focuses on one strain of Helicobacter acinonychis and may not represent all strains.
Digital Object Identifier (DOI)
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