Defective natural killer cell anti-viral capacity in paediatric HBV infection.
Defective natural killer cell anti-viral capacity in paediatric HBV infection.
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DOI:
10.1111/cei.12470
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发表时间:
2015-03
影响因子:
4.6
通讯作者:
Peppa D
中科院分区:
文献类型:
--
作者:
Heiberg IL;Pallett LJ;Winther TN;Høgh B;Maini MK;Peppa D
Natural killer (NK) cells exhibit dysregulated effector function in adult chronic hepatitis B virus (HBV) infection (CHB), which may contribute to virus persistence. The role of NK cells in children infected perinatally with HBV is less studied. Access to a unique cohort enabled the cross-sectional evaluation of NK cell frequency, phenotype and function in HBV-infected children relative to uninfected children. We observed a selective defect in NK cell interferon (IFN)-γ production, with conserved cytolytic function, mirroring the functional dichotomy observed in adult infection. Reduced expression of NKp30 on NK cells suggests a role of impaired NK-dendritic cell (DC) cellular interactions as a potential mechanism leading to reduced IFN-γ production. The finding that NK cells are already defective in paediatric CHB, albeit less extensively than in adult CHB, has potential implications for the timing of anti-viral therapy aiming to restore immune control.
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