PMID- 11210944 OWN - NLM STAT- MEDLINE DCOM- 20010823 LR - 20200516 IS - 0920-8569 (Print) IS - 0920-8569 (Linking) VI - 22 IP - 1 DP - 2001 Jan TI - The hamster polyomavirus--a brief review of recent knowledge. PG - 93-101 AB - The hamster polyomavirus (HaPV) was first described in 1967 as a virus associated with skin epithelioma of the Syrian hamster. The tumors appear spontaneously in a hamster colony bred in Berlin-Buch (HaB). Virus particles isolated from skin epitheliomas cause lymphoma and leukemia when injected into newborn hamsters from a distinct colony bred in Potsdam, Germany (HaP). The viral genome has been totally sequenced and the overall genetic organization establishes HaPV as a member of the polyomaviruses. HaPV is a second example of an middle T (MT) antigen encoding polyomavirus and nucleotide sequence homologies designates the mouse polyomavirus (Py) as the closest relative. Lymphomas induced by HaPV in HaP hamsters do not contain virus particles but instead accumulate different amounts of nonrandomly deleted free and/or integrated viral genomes. Transgenic mice produced by microinjection of HaPV DNA into the pronucleus of fertilized eggs of Gat: NMRI mice developed both, epitheliomas and lymphomas. Both tumor types contain extrachromosomal DNA. HaPV DNA was found to replicate in hamster lymphoid and fibroblast cell lines. Fully reproductive cycles could be detected only in GD36 lymphoblastic leukemia cells. HaPV carries the full transforming properties of a polyomavirus in vitro. Immortalization of primary rat cells is essentially carried out by the HaPV large T (LT) antigen and coexpression of HaPV MT and HaPV small T (ST) antigen is required for full transformation of rat fibroblasts. The preferential binding of HaPV MT to c-Fyn, a Src family kinase, has been proposed as a mechanism leading to lymphoid malignancies. Heterologous expression of HaPV-VP1 allowed the formation of virus like particles (VLPs) resembling HaPV particles. The high flexibility of HaPV-VP1 for insertion of foreign peptides offers a broad range of potential applications, especially in vaccine development. FAU - Scherneck, S AU - Scherneck S AD - Max Delbruck Center for Molecular Medicine, Berlin, Germany. sschern@mdc-berlin.de FAU - Ulrich, R AU - Ulrich R FAU - Feunteun, J AU - Feunteun J LA - eng PT - Journal Article PT - Review PL - United States TA - Virus Genes JT - Virus genes JID - 8803967 SB - IM MH - Animals MH - Cricetinae MH - Mesocricetus MH - Mice MH - Papilloma/*virology MH - Polyomavirus/*pathogenicity/*physiology MH - Polyomavirus Infections/*virology MH - Tumor Virus Infections/*virology RF - 46 EDAT- 2001/02/24 12:00 MHDA- 2001/08/24 10:01 CRDT- 2001/02/24 12:00 PHST- 2001/02/24 12:00 [pubmed] PHST- 2001/08/24 10:01 [medline] PHST- 2001/02/24 12:00 [entrez] AID - 10.1023/a:1008190504521 [doi] PST - ppublish SO - Virus Genes. 2001 Jan;22(1):93-101. doi: 10.1023/a:1008190504521.