PMID- 8263030 OWN - NLM STAT- MEDLINE DCOM- 19940126 LR - 20151119 IS - 0021-9541 (Print) IS - 0021-9541 (Linking) VI - 158 IP - 1 DP - 1994 Jan TI - Disparate modulation of plasma membrane protein lateral mobility by various cell permeabilizing agents. PG - 7-16 AB - The mobility of a cell surface protein on cells osmotically swollen by treatment with several different cell permeabilizing agents retains specific restraints despite detachment of the plasma membrane from the cortical cytoskeleton. Fluorescence photobleaching recovery experiments indicate that the lateral diffusion constants of immunoglobulin E (IgE)-receptor complexes on the surface of rat basophilic leukemia cells increase 2-5x following permeabilization with streptolysin O or digitonin, with little change in their mobile fractions. Swelling by hypo-osmotic treatment in water enhances lateral diffusion of IgE-receptor complexes and raises the mobile fractions to near 100%. In contrast, swelling by treatment with filipin arrests lateral diffusion, although rotational mobility remains unhindered. Lateral mobility of a fluorescent lipid analogue remains unchanged under these conditions. Crosslinking by anti-IgE antibodies redistributes the IgE-receptor complexes into large patches on untreated cells and on cells swollen by permeabilization with streptolysin O or digitonin, but not on cells swollen by treatment with filipin. The results indicate a diversity of effects of the various permeabilizing agents on the mobility of membrane proteins. In particular, treatment with filipin appears to reorganize the plasma membrane into a network of fluid domains on a scale smaller than the bleaching spot size used (approximately 1.5 microns). FAU - Feder, T J AU - Feder TJ AD - Department of Physics, Cornell University, Ithaca, New York 14853. FAU - Chang, E Y AU - Chang EY FAU - Holowka, D AU - Holowka D FAU - Webb, W W AU - Webb WW LA - eng GR - 08-PIRRO4224A/RR/NCRR NIH HHS/United States GR - AI18306/AI/NIAID NIH HHS/United States GR - AI22449/AI/NIAID NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Cell Physiol JT - Journal of cellular physiology JID - 0050222 RN - 0 (Bacterial Proteins) RN - 0 (Fluoresceins) RN - 0 (Membrane Proteins) RN - 0 (Receptors, IgE) RN - 0 (Streptolysins) RN - 0 (streptolysin O) RN - 059QF0KO0R (Water) RN - 87Z59R7D14 (Filipin) RN - KOO5CM684H (Digitonin) RN - TPY09G7XIR (Fluorescein) SB - IM MH - Animals MH - Bacterial Proteins MH - Biological Transport/drug effects MH - Cell Membrane Permeability MH - Diffusion MH - Digitonin/*pharmacology MH - Filipin/*pharmacology MH - Fluorescein MH - Fluoresceins MH - Membrane Proteins/*metabolism MH - Microscopy, Fluorescence/methods MH - Osmosis MH - Rats MH - Receptors, IgE/metabolism MH - Streptolysins/*pharmacology MH - Tumor Cells, Cultured MH - Water/metabolism EDAT- 1994/01/01 00:00 MHDA- 1994/01/01 00:01 CRDT- 1994/01/01 00:00 PHST- 1994/01/01 00:00 [pubmed] PHST- 1994/01/01 00:01 [medline] PHST- 1994/01/01 00:00 [entrez] AID - 10.1002/jcp.1041580103 [doi] PST - ppublish SO - J Cell Physiol. 1994 Jan;158(1):7-16. doi: 10.1002/jcp.1041580103.