PMID: 9178041Apr 1, 1997Paper

Implantation of cultured human leptomeningeal cells into rat brain

International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience
L A DeGiorgioJ P Blass

Abstract

Since previous studies have shown that cells cultured from human leptomeninges can express neuronal and glial antigens under appropriate culture conditions [DeGiorgio L. A. et al. (1994) J. Neurol. Sci. 124, 141 148; Bernstein J. J. et al. (1996) Int. J. Derl Neurosci. 14(5), 681 687], we have studied the developmental characteristics of these cells further by grafting them into young adult rat brains. Cells were labeled in culture with Fast Blue and were identified unequivocally by hybridization with nick-translated human DNA. Intensely Fast Blue positive human leptomeningeal cells were concentrated in the implant pocket and adjacent rat leptomeninges al one and two weeks postimplant. Human and rat leptomeningeal cells were similar morphologically and were equally immunopositive for vimentin and fibronectin. Implanted human cells did not express the neuronal and glial proteins they had in vitro. Cells which hybridized with human DNA corresponded to the intensely Fast Blue positive cells. Small groups of human DNA hybridizing cells were also observed in the choroid plexus. Less intensely Fast Blue positive neurons and glia were found in the brain but these hybridized with rat DNA. A minority of human leptomeningeal cells implan...Continue Reading

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