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可能过关, 也可能不过关,就是因为不知道机理。即便是目前已知的主要因素HBsAg,其免疫抑制机理也不是非常明确。近几年才有研究把它和PD- L1表达联系起来。
“ Further experiments in vitro showed that HBsAg or HBV directly induced the expression of PD-L1 and HLA-E and the secretion of anti-inflammatory cytokines of monocytes from healthy adults[11].
Li H, Zhai N, Wang Z, Song H, Yang Y, Cui A, Li T, Wang G, Niu J, Crispe IN, Su L, Tu Z. Regulatory NK cells mediated between immunosuppressive monocytes and dysfunctional T cells in chronic HBV infection. Gut. 2018;67:2035–2044
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