The interaction between phosphatidylcholine vesicles and isolated rat liver nuclei has been examined by studying the uptake of the fluorophore carboxyfluorescein. The kinetics of transfer of the dye, analyzed by flow cytofluorimetry with a Fluorescence Activated Cell Sorter (FACS IV), indicate an efficient delivery to the nucleoplasm. The results reflect a liposome-nuclear membrane interaction which may contribute to the processes which underlie our previously described morphological and functional changes in isolated nuclei treated with phospholipids.
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Papa et al. (1984) studied this question.
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