期刊
BIOTECHNIQUES
卷 49, 期 5, 页码 837-838出版社
FUTURE SCI LTD
DOI: 10.2144/000113541
关键词
Membrane; lipid rafts; freezing; DTSSP
资金
- National Institutes of Health (NIH) [R01CA086928]
Since the discovery of cellular membrane rafts, the defining of these domains has remained ambiguous due to a great number of isolation procedures proposed for the extraction of the rafts from cells. Characterization of membrane rafts using Triton X-100 insolubility is limited by the fact that weak interactions between proteins and lipids within the membrane rafts cannot be detected. In order to study the role of membrane rafts in cell signal transduction, it is crucial that weak membrane raft-associated proteins are detected. In this report, we demonstrate that by incorporating 3,3'-dithiobis(sulfosuccinimidyl propionate) (DTSSP) crosslinking and freezing at -80 degrees C into the membrane raft isolation procedure of HaCaT cells, both membrane raft-associated proteins caveolin-1 and Fas receptor are able to be reproducibly isolated into a single fraction containing the membrane rafts of the cells.
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