Summary
Subacute sclerosing panencephalitis (SSPE) is a rare, fatal disease of children caused by a persistent measles virus infection of the central nervous system. A defect in synthesis of measles virus matrix (M) protein may be a factor in virus persistence in the brain. This study details attempts to detect expression of M protein in the brain of an SSPE patient, in the cell-associated virus isolated from this brain, and in brains of ferrets inoculated with the isolate. In situ hybridization with a tritiated cloned cDNA probe was used to search for RNA encoding M protein. Immunostaining with monospecific antiserum and the avidin-biotin-peroxidase technique was done to locate the polypeptide. The data obtained indicate that although nucleotide sequences coding for M protein were detected in the patient and ferret brains, expression of M protein in these tissues could not be detected. In the cultured SSPE virus isolate, the results were the same until the infected cells were examined by electron microscopy and a very limited expression of M protein was revealed. This suggests either diminished synthesis and/or rapid degradation of M protein in this cell-associated virus strain.
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This paper is dedicated to the late Dr. George A. Jervis, first Director of the Institute for Basic Research, Physician and Scientist, for his humanity and many contributions to the mentally retarded and developmentally disabled.
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Brown, H.R., Goller, N.L., Thormar, H. et al. Measles virus matrix protein gene expression in a subacute sclerosing panencephalitis patient brain and virus isolate demonstrated by cDNA hybridization and immunocytochemistry. Acta Neuropathol 75, 123–130 (1987). https://doi.org/10.1007/BF00687072
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DOI: https://doi.org/10.1007/BF00687072