Marwaha, Lalat K. and Tirrell, David A. (1982) Interaction of Synthetic Polymers with Cell Membranes and Model Membrane Systems IV. Pyran Copolymer. In: Biological Activities of Polymers. ACS Symposium Series. No.186. American Chemical Society , Washington, DC, pp. 163-175. ISBN 9780841207196. https://resolver.caltech.edu/CaltechAUTHORS:20150209-164311476
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Abstract
We have investigated the interaction of pyran copolymer with erythrocyte ghosts, with intact erythrocytes and with liposomes of pure dipalmitoylphosphatidylcholine (DPPC). Particular attention was given to the importance of divalent metals (especially Ca^(2+)) in promoting the association of pyran copolymer with cell and lipid surfaces. High sensitivity differential scanning calorimetry shows: i) The perturbation of erythrocyte ghost structure by pyran copolymer is not reidily 'bashed out" by treatment with fresh buffer, ii) This perturbation is not due simply to sequestration of metal ions, iii) Pyran copolymer reverses at least partially the effects of Ca^(2+) added to erythrocyte ghosts, and iv) Pyran copolymer raises the transition temperature of DPPC liposomes in the presence of 5 mM Ca^(2+), but not in the absence of added Ca^(2+).
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| Additional Information: | © 1982 American Chemical Society. The authors would like to thank Professors William S. Kelley and James F. Williams for use of liquid scintillation counters. This work was supported by the Health Research and Services Foundation, Pittsburgh, PA., and by the Samuel and Emma Winters Foundation. The calorimeter was purchased with the aid of National Science Foundation Grant No.. CHE-79-11206. | |||||||||
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| Series Name: | ACS Symposium Series | |||||||||
| Issue or Number: | 186 | |||||||||
| DOI: | 10.1021/bk-1982-0186.ch013 | |||||||||
| Record Number: | CaltechAUTHORS:20150209-164311476 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150209-164311476 | |||||||||
| Official Citation: | Interaction of Synthetic Polymers with Cell Membranes and Model Membrane Systems: Pyran Copolymer LALAT K. MARWAHA and DAVID A. TIRRELL Biological Activities of Polymers. May 12, 1982, 163-175 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 54614 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Anne Hormann | |||||||||
| Deposited On: | 10 Feb 2015 20:14 | |||||||||
| Last Modified: | 10 Nov 2021 20:35 |
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