Unknown

Dataset Information

0

Antibody escape by polyomavirus capsid mutation facilitates neurovirulence.


ABSTRACT: JCPyV polyomavirus, a member of the human virome, causes progressive multifocal leukoencephalopathy (PML), an oft-fatal demyelinating brain disease in individuals receiving immunomodulatory therapies. Mutations in the major viral capsid protein, VP1, are common in JCPyV from PML patients (JCPyV-PML) but whether they confer neurovirulence or escape from virus-neutralizing antibody (nAb) in vivo is unknown. A mouse polyomavirus (MuPyV) with a sequence-equivalent JCPyV-PML VP1 mutation replicated poorly in the kidney, a major reservoir for JCPyV persistence, but retained the CNS infectivity, cell tropism, and neuropathology of the parental virus. This mutation rendered MuPyV resistant to a monoclonal Ab (mAb), whose specificity overlapped the endogenous anti-VP1 response. Using cryo-EM and a custom sub-particle refinement approach, we resolved an MuPyV:Fab complex map to 3.2 Å resolution. The structure revealed the mechanism of mAb evasion. Our findings demonstrate convergence between nAb evasion and CNS neurovirulence in vivo by a frequent JCPyV-PML VP1 mutation.

SUBMITTER: Lauver MD 

PROVIDER: S-EPMC7541085 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

altmetric image

Publications


JCPyV polyomavirus, a member of the human virome, causes progressive multifocal leukoencephalopathy (PML), an oft-fatal demyelinating brain disease in individuals receiving immunomodulatory therapies. Mutations in the major viral capsid protein, VP1, are common in JCPyV from PML patients (JCPyV-PML) but whether they confer neurovirulence or escape from virus-neutralizing antibody (nAb) in vivo is unknown. A mouse polyomavirus (MuPyV) with a sequence-equivalent JCPyV-PML VP1 mutation replicated p  ...[more]

Similar Datasets

| S-EPMC6290683 | biostudies-literature
| S-EPMC3795024 | biostudies-literature
| S-EPMC3256321 | biostudies-literature
| S-EPMC10308881 | biostudies-literature
| S-EPMC3993751 | biostudies-literature
| S-EPMC3749969 | biostudies-literature
| S-EPMC7589550 | biostudies-literature
| S-EPMC7539592 | biostudies-literature
| S-EPMC7486785 | biostudies-literature
| S-EPMC3582142 | biostudies-other