Inventors:
Gary S. Hayward - Baltimore MD
John Nicholas - Towson MD
Marvin R. Reitz - Derwood MD
J. Marie Hardwick - Baltimore MD
Assignee:
The Johns Hopkins University - Baltimore MD
International Classification:
A61K 39245, A61K 3912, C12P 1934
Abstract:
A human gamma herpesviris genome known as Kaposi sarcoma associated herpesvirus (KSHV) or human herpesvirus 8 (HHV-8) is present in virtually all AIDS and non-AIDS Kaposi's sarcoma (KS) lesions, as well as in body cavity based lymphomas (BCBL), Multiple myeloma, and in multicentric Casdeman's disease. Isolation and DNA sequencing of a 17-kb segment encompassing a HHV-8 divergent locus (DL-B) between ORF11 and ORF17 revealed the presence of nine viral ORFs with gene products related to cellular proteins. These include the complete thymidylate synthase (TS) gene and a dihydrofolate reductase (DHFR) gene, four cytokine genes (vIL6, vMIP-1A, vMIP-1B and BCK) that have not previously been found to be encoded by a virus, and a Bcl2 homologue. This region in HHV-8 also contains the T1. 1 abundant lytic cycle nuclear RNA gene and encompasses two genes (or exons) encoding proteins with C4HC3 zinc finger domains of the PHD/LAP subtype.