Staphylococcus epidermidis-Skin friend or foe?

Abstract:

:Our skin is our first line of defense against environmental and pathogenic challenges. It is densely populated by a flora of bacteria, fungi, and viruses that normally interact with each other and with our immune system to promote skin health and homeostasis. Staphylococcus epidermidis is one of the most abundant bacterial colonizers of healthy human skin. While the field has historically assumed that all S. epidermidis isolates behave similarly, emerging evidence suggests that colonization by specific strains of S. epidermidis can either help or hurt the skin barrier depending on the context. In this short review, we discuss what is currently understood about S. epidermidis strain-level diversity and evaluate costs and benefits of S. epidermidis skin colonization. We challenge the current dogma that "all S. epidermidis strains behave equally" and posit that behavior is in fact highly context and strain dependent. Finally, in light of current proposals to use skin commensals as nonantibiotic treatments for acute or chronic skin diseases, we conclude that more work is urgently needed to fully understand the pathogenic and protective roles of commensals before we use them therapeutically.

journal_name

PLoS Pathog

journal_title

PLoS pathogens

authors

Brown MM,Horswill AR

doi

10.1371/journal.ppat.1009026

subject

Has Abstract

pub_date

2020-11-12 00:00:00

pages

e1009026

issue

11

eissn

1553-7366

issn

1553-7374

pii

PPATHOGENS-D-20-01608

journal_volume

16

pub_type

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