Variant enterovirus A71 found in immune-suppressed patient binds to heparan sulfate and exhibits neurotropism in B-cell-depleted mice.
Variant enterovirus A71 found in immune-suppressed patient binds to heparan sulfate and exhibits neurotropism in B-cell-depleted mice.
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在免疫抑制患者中发现的变体肠病毒A71与硫酸乙酰肝素结合,并在B细胞耗尽的小鼠中表现出神经性。
DOI:
10.1016/j.celrep.2023.112389
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发表时间:
2023-04-25
期刊:
影响因子:
8.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Enterovirus A71 (EV-A71) causes hand, foot, and mouth disease outbreaks with neurological complications and deaths. We previously isolated an EV-A71 variant in the stool, cerebrospinal fluid, and blood of an immunocompromised patient who had a leucine-to-arginine substitution on the VP1 capsid protein, resulting in increased heparin sulfate binding. We show here that this mutation increases the virus’s pathogenicity in orally infected mice with depleted B cells, which mimics the patient’s immune status, and increases susceptibility to neutralizing antibodies. However, a double mutant with even greater heparin sulfate affinity is not pathogenic, suggesting that increased heparin sulfate affinity may trap virions in peripheral tissues and reduce neurovirulence. This research sheds light on the increased pathogenicity of variant with heparin sulfate (HS)-binding ability in individuals with decreased B cell immunity. A L97R substitution in the VP1 capsid protein of enterovirus A71, conferring heparan sulfate binding ability, was detected in an immunocompromised patient. Weng et al. demonstrate that variants with this mutation, despite increased susceptibility to host neutralizing antibodies, are more virulent in orally infected immunosuppressed mice.
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影响因子:
6.7
作者:
Kuss SK;Etheredge CA;Pfeiffer JK
通讯作者:
Pfeiffer JK
影响因子:
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10.1002/pauz.201100396
发表时间:
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期刊:
Pharmazie in unserer Zeit
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通讯作者:
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