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2017 ; 20
(13
): 3176-3187
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English Wikipedia
Lymphatic Vessels Balance Viral Dissemination and Immune Activation following
Cutaneous Viral Infection
#MMPMID28954233
Loo CP
; Nelson NA
; Lane RS
; Booth JL
; Loprinzi Hardin SC
; Thomas A
; Slifka MK
; Nolz JC
; Lund AW
Cell Rep
2017[Sep]; 20
(13
): 3176-3187
PMID28954233
show ga
Lymphatic vessels lie at the interface between peripheral sites of pathogen
entry, adaptive immunity, and the systemic host. Though the paradigm is that
their open structure allows for passive flow of infectious particles from
peripheral tissues to lymphoid organs, virus applied to skin by scarification
does not spread to draining lymph nodes. Using cutaneous infection by
scarification, we analyzed the effect of viral infection on lymphatic transport
and evaluated its role at the host-pathogen interface. We found that, in the
absence of lymphatic vessels, canonical lymph-node-dependent immune induction was
impaired, resulting in exacerbated pathology and compensatory, systemic priming.
Furthermore, lymphatic vessels decouple fluid and cellular transport in an
interferon-dependent manner, leading to viral sequestration while maintaining
dendritic cell transport for immune induction. In conclusion, we found that
lymphatic vessels balance immune activation and viral dissemination and act as an
"innate-like" component of tissue host viral defense.