title: Minute virus of mice (MVMp) infection and NS1 expression induce p53 independent apoptosis in transformed rat fibroblast cells.
abstract: Parvoviruses infect and kill tumor cells in vivo and in vitro more efficiently than normal cells. Infection of transformed cells by the parvovirus minute virus of mice (MVM) results in high expression of the major non-structural cytolytic viral protein NS1, which induces a cell death modulated by cellular factors. In this work, we show that MVMp infection and/or NS1 protein expression in permissive transformed rat fibroblast cells leads to apoptosis in wild type and p53(-/-) cells. Apoptotic cell morphology correlates with mitochondrial membrane permeabilization and activation of caspases 9 and 3 but not caspase 8. Thus, further characterization of the antitumor activity of MVMp and its NS1 protein may contribute to the eradication of tumors, including those lacking p53.
authors.affiliation: Department of Virology and Developmental Genetics, Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel.
authors.forename: Michal
authors.initials: M
authors.lastname: Mincberg
authors.forename: Jacob
authors.initials: J
authors.lastname: Gopas
authors.forename: Jacov
authors.initials: J
authors.lastname: Tal
mesh_terms: D000818:Animals; D017209:Apoptosis; D053148:Caspase 3 / Q000378:metabolism; D053453:Caspase 9 / Q000378:metabolism; D002478:Cells, Cultured; D005347:Fibroblasts / Q000502:physiology* / Q000821:virology*; D051379:Mice; D018345:Mice, Knockout; D008915:Minute Virus of Mice / Q000472:pathogenicity*; D051381:Rats; D016159:Tumor Suppressor Protein p53 / Q000172:deficiency; D017361:Viral Nonstructural Proteins / Q000378:metabolism*; D037521:Virulence Factors / Q000378:metabolism*
chemical_list: C081367:NS1 protein, minute virus of mice; D016159:Tumor Suppressor Protein p53; D017361:Viral Nonstructural Proteins; D037521:Virulence Factors; D053148:Caspase 3; D053453:Caspase 9