Membrane Properties Involved in Calcium-Stimulated Microparticle Release from the Plasma Membranes of S49 Lymphoma Cells
Joint Authors
Nelson, Jennifer
Judd, Allan M.
Bell, John D.
Campbell, Lauryl E.
Gibbons, Elizabeth
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-17
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
This study answered the question of whether biophysical mechanisms for microparticle shedding discovered in platelets and erythrocytes also apply to nucleated cells: cytoskeletal disruption, potassium efflux, transbilayer phospholipid migration, and membrane disordering.
The calcium ionophore, ionomycin, disrupted the actin cytoskeleton of S49 lymphoma cells and produced rapid release of microparticles.
This release was significantly inhibited by interventions that impaired calcium-activated potassium current.
Microparticle release was also greatly reduced in a lymphocyte cell line deficient in the expression of scramblase, the enzyme responsible for calcium-stimulated dismantling of the normal phospholipid transbilayer asymmetry.
Rescue of the scrambling function at high ionophore concentration also resulted in enhanced particle shedding.
The effect of membrane physical properties was addressed by varying the experimental temperature (32–42°C).
A significant positive trend in the rate of microparticle release as a function of temperature was observed.
Fluorescence experiments with trimethylammonium diphenylhexatriene and Patman revealed significant decrease in the level of apparent membrane order along that temperature range.
These results demonstrated that biophysical mechanisms involved in microparticle release from platelets and erythrocytes apply also to lymphocytes.
American Psychological Association (APA)
Campbell, Lauryl E.& Nelson, Jennifer& Gibbons, Elizabeth& Judd, Allan M.& Bell, John D.. 2013. Membrane Properties Involved in Calcium-Stimulated Microparticle Release from the Plasma Membranes of S49 Lymphoma Cells. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1050022
Modern Language Association (MLA)
Campbell, Lauryl E.…[et al.]. Membrane Properties Involved in Calcium-Stimulated Microparticle Release from the Plasma Membranes of S49 Lymphoma Cells. The Scientific World Journal No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1050022
American Medical Association (AMA)
Campbell, Lauryl E.& Nelson, Jennifer& Gibbons, Elizabeth& Judd, Allan M.& Bell, John D.. Membrane Properties Involved in Calcium-Stimulated Microparticle Release from the Plasma Membranes of S49 Lymphoma Cells. The Scientific World Journal. 2013. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1050022
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1050022