Summary
Microvessels isolated from mouse forebrain were used as the source material for the derivation of cerebral vascular endothelium and smooth-muscle cells in culture. The microvessels were isolated by a mechanical dispersion and filtration technique, and were maintained in vitro as organoid cultures. A microvessel classification system was developed and proved to be useful as a tool in monitoring culture progress and in predicting the type(s) of microvessel(s) that would give rise to migrating and/or proliferating cells. The isolated cerebral microvessels were heterogeneous in diameter, size of individual vascular isolate, and proliferative potential. The isolated microvessels ranged in diameter from 4 μm to 25 μm and in size from a single microvascular segment to a large multibranched plexus with mural cells. The initial viability, determined by erythrosin B exclusion, was approximately 50% on a per cell basis. All microvessel classes had proliferative potential although the rate and extent of proliferation were both microvessel class- and density-dependent. The smaller microvessels gave rise to endothelial cells, whereas the large microvessels gave rise to endothelial and smooth-muscle cells. The viability and progress of a microvessel toward derived cell proliferation seemed to be directly proportional to the number of mural cells present.
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This work was supported in part by an Arteriosclerosis Specialized center of Research grant from the National Heart, Lung and Blood Institute, National Institutes of Health (HL-14230) and Grant 584-127703 from the Veterans Administration.
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DeBault, L.E., Kahn, L.E., Frommes, S.P. et al. Cerebral microvessels and derived cells in tissue culture: Isolation and preliminary characterization. In Vitro 15, 473–487 (1979). https://doi.org/10.1007/BF02618149
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DOI: https://doi.org/10.1007/BF02618149