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  • Title: Separation of hepatocytes of different acinar zones by flow cytometry.
    Author: Thalhammer T, Gessl A, Braakman I, Graf J.
    Journal: Cytometry; 1989 Nov; 10(6):772-8. PubMed ID: 2582968.
    Abstract:
    Hepatocytes in the proximal (zone 1) and distal (zone 3) regions of the liver acinus are selectively stained by perfusion of the isolated rat liver with 0.2-20 microM acridine orange (AO). After 10-60 min of anterograde perfusion, AO fluorescence is visible in zone 1 cells, whereas retrograde perfusion stains cells of zone 3. In this paper, we describe a technique to isolate a mixed population of fluorescent and nonfluorescent hepatocytes (cells from all acinar zones, which do not loose the zone specific AO labeling) and to separate these cells according to their zonal origin by fluorescence activated cell sorting. The zonal populations obtained were either fluorescent or nonfluorescent (purity greater than 95%). Separated cell fractions differed in their enzyme content (5' nucleotidase, succinate-dehydrogenase, beta-glucuronidase). An unidentified AO metabolite, which is not found in bile after retrograde perfusion (not formed in zone 3 cells), is also absent after retrograde perfusion in sorted fluorescent cells (zone 3 cells), indicating zonal purity of sorted cells.
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