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2015 ; 6
(5
): e01578-15
Nephropedia Template TP
gab.com Text
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English Wikipedia
The human skin double-stranded DNA virome: topographical and temporal diversity,
genetic enrichment, and dynamic associations with the host microbiome
#MMPMID26489866
Hannigan GD
; Meisel JS
; Tyldsley AS
; Zheng Q
; Hodkinson BP
; SanMiguel AJ
; Minot S
; Bushman FD
; Grice EA
mBio
2015[Oct]; 6
(5
): e01578-15
PMID26489866
show ga
Viruses make up a major component of the human microbiota but are poorly
understood in the skin, our primary barrier to the external environment. Viral
communities have the potential to modulate states of cutaneous health and
disease. Bacteriophages are known to influence the structure and function of
microbial communities through predation and genetic exchange. Human viruses are
associated with skin cancers and a multitude of cutaneous manifestations. Despite
these important roles, little is known regarding the human skin virome and its
interactions with the host microbiome. Here we evaluated the human cutaneous
double-stranded DNA virome by metagenomic sequencing of DNA from purified
virus-like particles (VLPs). In parallel, we employed metagenomic sequencing of
the total skin microbiome to assess covariation and infer interactions with the
virome. Samples were collected from 16 subjects at eight body sites over 1 month.
In addition to the microenviroment, which is known to partition the bacterial and
fungal microbiota, natural skin occlusion was strongly associated with skin
virome community composition. Viral contigs were enriched for genes indicative of
a temperate phage replication style and also maintained genes encoding potential
antibiotic resistance and virulence factors. CRISPR spacers identified in the
bacterial DNA sequences provided a record of phage predation and suggest a
mechanism to explain spatial partitioning of skin phage communities. Finally, we
modeled the structure of bacterial and phage communities together to reveal a
complex microbial environment with a Corynebacterium hub. These results reveal
the previously underappreciated diversity, encoded functions, and viral-microbial
dynamic unique to the human skin virome. IMPORTANCE: To date, most cutaneous
microbiome studies have focused on bacterial and fungal communities. Skin viral
communities and their relationships with their hosts remain poorly understood
despite their potential to modulate states of cutaneous health and disease.
Previous studies employing whole-metagenome sequencing without purification for
virus-like particles (VLPs) have provided some insight into the viral component
of the skin microbiome but have not completely characterized these communities or
analyzed interactions with the host microbiome. Here we present an optimized
virus purification technique and corresponding analysis tools for gaining novel
insights into the skin virome, including viral "dark matter," and its potential
interactions with the host microbiome. The work presented here establishes a
baseline of the healthy human skin virome and is a necessary foundation for
future studies examining viral perturbations in skin health and disease.