The Antimicrobial Peptide Histatin-5 Causes a Spatially Restricted Disruption on the Candida albicans Surface, Allowing Rapid Entry of the Peptide into the Cytoplasm
2008

How Histatin-5 Kills Candida albicans

Sample size: 106 publication 10 minutes Evidence: high

Author Information

Author(s): Mochon A., Brian Liu, Haoping

Primary Institution: Department of Biological Chemistry, University of California, Irvine, California, United States of America

Hypothesis

How is histatin-5 internalized into Candida albicans?

Conclusion

Histatin-5 disrupts the plasma membrane of Candida albicans, allowing its rapid entry into the cytoplasm and leading to cell death.

Supporting Evidence

  • Hst-5 is internalized into the vacuole through receptor-mediated endocytosis at low concentrations.
  • At higher concentrations, Hst-5 is translocated into the cytoplasm, causing cell death.
  • Cells with vacuolar localization of Hst-5 survived, while those with cytoplasmic Hst-5 did not.

Takeaway

Histatin-5 is a special protein that can get inside yeast cells and kill them by breaking their outer layer.

Methodology

The study used flow cytometry and time-lapse microscopy to observe the internalization of histatin-5 in Candida albicans at various concentrations.

Limitations

The study primarily focuses on Candida albicans and may not be generalizable to other species.

Participant Demographics

The study involved the yeast species Candida albicans, with no specific demographic data provided.

Digital Object Identifier (DOI)

10.1371/journal.ppat.1000190

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