Expression of the neurofibromatosis Type 2 gene in human tissues

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Abstract

The neurofibromatosis Type 2 tumor suppressor gene is implicated in the hereditary tumor syndrome NF2, hall-marked by bilateral vestibular schwannomas, meningiomas, and ocular non-neoplastic features. The gene product has characteristics of a membrane cytoskeleton-linking protein but the mechanism of tumor suppression by the NF2 protein remains to be elucidated. The NF2 gene is widely expressed in mouse and rat tissues. In humans, most of the expression data have accumulated through Northern blot analysis, RT-PCR and, more recently. Western blot analysis, providing information on whole tissues and organs rather than on specific cell types. We report here an extensive survey of NF2 gene expression in human tissues using a combination of mRNA in situ hybridization (mRNA ISH) and immunohistochemistry (IH) with a panel of monoclonal antibodies (MAbs) supplemented by tissue immunoprecipitation experiments with affinity-purified polyclonal antibodies. Expression was observed in many different cell types, most of which appear functionally normal in individuals affected by NF2. Surprisingly, expression could not be consistently documented in Schwann cells and arachnoidal cells by IH or by mRNA ISH in formalin-fixed tissue. However, consistent immunostaining of Schwann cells was seen in frozen sections.

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Den Bakker, M. A., Vissers, K. J., Molijn, A. C., Kros, J. M., Zwarthoff, E. C., & Van Der Kwast, T. H. (1999). Expression of the neurofibromatosis Type 2 gene in human tissues. Journal of Histochemistry and Cytochemistry, 47(11), 1471–1479. https://doi.org/10.1177/002215549904701113

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