The United States of America, as Represented by the Secretary, Department of Health and Human Services

University of Pittsburgh

Christopher B Buck

Diana V Pastrana

Yuan Chang

Patrick S Moore

Huichen Feng

Upasana Ray

Methods of eliciting an immune response to a JC polyomavirus (JCV) by administering an effective amount of an immunogenic composition including an isolated JCV VP1 polypeptide or a nucleic acid encoding the VP1 polypeptide to a subject are provided. VP1 polypeptides and immunogenic compositions suitable for use in the methods are provided, including JCV genotype 2 VP1 polypeptides and/or JCV genotype 3 polypeptides. Methods of identifying a subject at risk of developing progressive multifocal leukoencephalopathy (PML) are also provided. In some embodiments, the methods include obtaining a biological sample from a subject, detecting presence or absence of JCV neutralizing antibodies in the sample from the subject, and identifying that the subject is at risk of developing PML if there is an absence of detectable JCV neutralizing antibodies in the sample from the subject.

Immunogenic JC polyomavirus compositions and methods of use

Disclosed herein are methods of eliciting an immune response against a polyomavirus (for example, BKV serotype I (BKV-I), BKV serotype II (BKV-II), BKV serotype III (BKV-III) and/or BKV serotype IV (BKV-IV)) and methods of treating or inhibiting polyomavirus-associated pathology (such as polyomavirus-associated nephropathy, BKV-associated hemorrhagic cystitis, or JC virus-associated progressive multifocal leukoencephalopathy; PML). Further disclosed are immunogenic compositions of use in the disclosed methods. Also disclosed are methods of selecting an organ transplant donor and/or recipient including detecting whether the prospective donor and/or recipient has BKV serotype-specific (such as BKV serotype IV-specific) neutralizing antibodies.

Methods and compositions for inhibiting polyomavirus-associated pathology

The present invention provides isolated or substantially purified polypeptides, nucleic acids, and virus-like particles (VLPs) derived from a Merkel cell carcinoma virus (MCV), which is a newly-discovered virus. The invention further provides monoclonal antibody molecules that bind to MCV polypeptides. The invention further provides diagnostic, prophylactic, and therapeutic methods relating to the identification, prevention, and treatment of MCV-related diseases.

Growing community of inventors

Bethesda, MD, United States of America

Christopher B Buck