title: Infection of different cell lines of neural origin with subacute sclerosing panencephalitis (SSPE) virus.
abstract: Measles virus is the causative agent of subacute sclerosing panencephalitis (SSPE). The viruses isolated from brain cells of patients with SSPE (called SSPE viruses) are defective in cell-free virus production in vitro. To investigate the cell tropism of three strains of SSPE virus (Osaka-1, Osaka-2, Osaka-3), SSPE virus-infected cell cultures were treated with cytochalasin D to prepare virus-like particles (CD-VLPs). All CD-VLPs formed syncytia after infection in CHO cells expressing CD150 but not in those expressing CD46. In addition, an antibody to CD46 did not block the infection of Vero cells by SSPE CDVLPs. The results were consistent with our previous suggestion that one or more unidentified receptors might be involved in the entry process. Infection with the CD-VLPs from three SSPE strains was further examined in different human cell lines, including those of neural origin, and was found to induce syncytia in epithelial cells (HeLa and 293T) as well as neuroblastoma cells (IMR-32 and SK-N-SH) with varying efficiency. SSPE CD-VLPs also infected glioblastoma cells (A172) and astrocytoma cells (U-251) but syncytial formation was rarely induced. These epithelial and neural cell lines were not permissive for the replication of wild-type MV. Together with our previous observations, these results suggest that the cell entry receptor is the major factor determining the cell tropism of SSPE viruses. Further studies are necessary to identify other viral and/or cellular factors that might be involved in the replication of SSPE virus in specific neural cells and in the brain.
authors.affiliation: Department of Virology, Osaka City University Medical School, Osaka, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ishida
authors.forename: Minoru
authors.initials: M
authors.lastname: Ayata
authors.forename: Masashi
authors.initials: M
authors.lastname: Shingai
authors.forename: Isamu
authors.initials: I
authors.lastname: Matsunaga
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Seto
authors.forename: Yuko
authors.initials: Y
authors.lastname: Katayama
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Iritani
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Seya
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yanagi
authors.forename: Osamu
authors.initials: O
authors.lastname: Matsuoka
authors.forename: Tsunekazu
authors.initials: T
authors.lastname: Yamano
authors.forename: Hisashi
authors.initials: H
authors.lastname: Ogura
mesh_terms: D000818:Animals; D015703:Antigens, CD; D016466:CHO Cells; D045744:Cell Line, Tumor; D002522:Chlorocebus aethiops; D006224:Cricetinae; D015726:Giant Cells; D006023:Glycoproteins / Q000378:metabolism; D006367:HeLa Cells; D006801:Humans; D007136:Immunoglobulins / Q000378:metabolism; D009420:Nervous System / Q000166:cytology / Q000821:virology*; D011956:Receptors, Cell Surface; D013190:SSPE Virus / Q000472:pathogenicity*; D000071177:Signaling Lymphocytic Activation Molecule Family Member 1; D013344:Subacute Sclerosing Panencephalitis / Q000821:virology; D014709:Vero Cells; D014771:Virion / Q000472:pathogenicity
chemical_list: D015703:Antigens, CD; D006023:Glycoproteins; D007136:Immunoglobulins; D011956:Receptors, Cell Surface; C000604059:SLAMF1 protein, human; D000071177:Signaling Lymphocytic Activation Molecule Family Member 1