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Isolation and characterization of clonal vascular smooth muscle cell lines from spontaneously hypertensive and normotensive rat aortas

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Summary

Vascular smooth muscle cells were isolated from the aortas of spontaneously hypertensive rats and normotensive Wistar-Kyoto rats by use of the explant method on collagen gels. Clonal cell lines derived from these enriched populations possessed ultrastructural characteristics of vascular smooth muscle cells in culture; they grew in hill and valley configuration, immunostained with the muscle actin antibody HHF35, and failed to react with von Willebrand Factor VIII antibody. Fourteen clonal cell lines were characterized for growth and ligand binding characteristics. Large variations in growth rate and cell density at saturation were exhibited by clones of both strains. Similar variability was noted for specific binding of endothelial 1 and Sar1,Ile8-angiotensin II to their receptors, indicating considerable phenotypic heterogeneity among the clonal cell lines. Six selected clones were further characterized for angiotensin II receptor linkage to G proteins. Cells of both strains exhibited comparable affinity shifts in the presence of GTPγS. These clonal cell lines should be useful for a variety of analyses of the comparative biology of aortic cells. It is possible that the diversity of phenotypic traits exhibited by these clones reflects the heterogeneity of vascular smooth muscle tissue found in vivo.

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Authors and Affiliations

  1. Department of Veterinary Comparative Anatomy, Pharmacology, and Physiology, School of Veterinary Medicine, USA

    Keith L. Hall & Joseph W. Harding

  2. the Department of Genetics and Cell Biology, Washington State University, 99164, Pullman, Washington

    Howard L. Hosick

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  1. Keith L. Hall
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Hall, K.L., Harding, J.W. & Hosick, H.L. Isolation and characterization of clonal vascular smooth muscle cell lines from spontaneously hypertensive and normotensive rat aortas. In Vitro Cell Dev Biol - Animal 27, 791–798 (1991). https://doi.org/10.1007/BF02631245

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  • DOI: https://doi.org/10.1007/BF02631245

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