Lactoferricin Blocks Dangerous Bacteria From Sticking to and Invading Human Cells
Bovine lactoferricin reduced adhesion and invasion of enteropathogenic Yersinia to human cells in a dose-dependent manner — preventing bacterial cell entry, not just killing bacteria.
Quick Facts
What This Study Found
Bovine lactoferricin dose-dependently reduced Yersinia adhesion to and invasion of HEp-2 cells even at sub-bactericidal concentrations, demonstrating anti-virulence activity complementing its bactericidal effects.
Key Numbers
How They Did This
In-vitro infection study. Bovine lactoferricin at various concentrations incubated with enteropathogenic Yersinia and HEp-2 cells. Adhesion and invasion quantified by gentamicin protection assay.
Why This Research Matters
Preventing bacteria from invading cells is potentially more effective than trying to kill them after infection. This anti-adherence/anti-invasion effect could prevent infection establishment.
The Bigger Picture
Antimicrobial strategies that prevent infection establishment (anti-virulence) rather than killing bacteria (bactericidal) are less likely to drive resistance development.
What This Study Doesn't Tell Us
In-vitro cell infection model. The concentrations achievable at intestinal surfaces are uncertain. Single pathogen tested.
Questions This Raises
- ?Would lactoferricin prevent intestinal Yersinia infection in vivo?
- ?Does this anti-virulence mechanism extend to other enteric pathogens?
- ?Could lactoferrin supplementation prevent foodborne Yersinia infection?
Trust & Context
- Key Stat:
- Blocks invasion At doses too low to kill bacteria, lactoferricin still prevented them from sticking to and invading cells — anti-virulence protection complementing killing
- Evidence Grade:
- Preliminary in-vitro evidence with clear dose-dependent anti-adhesion and anti-invasion data in a standard cell infection model.
- Study Age:
- Published in 2004. Anti-virulence approaches to infection prevention have grown in importance as antibiotic resistance increases.
- Original Title:
- Effect of bovine lactoferricin on enteropathogenic Yersinia adhesion and invasion in HEp-2 cells.
- Published In:
- Journal of medical microbiology, 53(Pt 5), 407-412 (2004)
- Authors:
- Di Biase, Assunta Maria(2), Tinari, Antonella(2), Pietrantoni, Agostina(3), Antonini, Giovanni, Valenti, Piera, Conte, Maria Pia, Superti, Fabiana
- Database ID:
- RPEP-00902
Evidence Hierarchy
Frequently Asked Questions
Can lactoferricin prevent infection without killing bacteria?
Yes — this study shows it blocks bacteria from attaching to and invading cells even at low doses. It's like coating cells with a non-stick surface that bacteria can't grab onto.
Is this better than just killing bacteria?
It's complementary. Killing bacteria can drive resistance, but preventing them from invading cells is harder for bacteria to evolve around. Lactoferricin does both — kill AND block invasion.
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Cite This Study
https://rethinkpeptides.com/research/RPEP-00902APA
Di Biase, Assunta Maria; Tinari, Antonella; Pietrantoni, Agostina; Antonini, Giovanni; Valenti, Piera; Conte, Maria Pia; Superti, Fabiana. (2004). Effect of bovine lactoferricin on enteropathogenic Yersinia adhesion and invasion in HEp-2 cells.. Journal of medical microbiology, 53(Pt 5), 407-412. https://doi.org/10.1099/jmm.0.05410-0
MLA
Di Biase, Assunta Maria, et al. "Effect of bovine lactoferricin on enteropathogenic Yersinia adhesion and invasion in HEp-2 cells.." Journal of medical microbiology, 2004. https://doi.org/10.1099/jmm.0.05410-0
RethinkPeptides
RethinkPeptides Research Database. "Effect of bovine lactoferricin on enteropathogenic Yersinia ..." RPEP-00902. Retrieved from https://rethinkpeptides.com/research/di-2004-effect-of-bovine-lactoferricin
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.