Ref ID : 484
W. Gawlitta and W. Stockem; Pinocytosis and locomotion of Amoebae XIII. Induction of pinocytosis in Amoeba proteus by microingection of polyamines. Arch.Protistenk 126:409-417, 1982
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Microinjection of different polyamines into the cytoplasm of living Amoeba proteus intensifies or induces pinocytosis. The observed phenomena after injection of ethylenediamine, spermidine and spermine resemble those of increased permanent pinocytosis, naturally occurring at the uroid of normal locomoting cells. The injection of putrescine leads to the formation of pinocytotic membrane invaginations all over the whole surface, quite similar to externally induced pinocytosis caused by polycations. The importance of the results is discussed with respect to the possible role of the actomyosin system during pinocytosis.