کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1936756 1536791 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Differential incorporation of docosahexaenoic acid into distinct cholesterol-rich membrane raft domains
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Differential incorporation of docosahexaenoic acid into distinct cholesterol-rich membrane raft domains
چکیده انگلیسی

We investigated the influence of docosahexaenoic acid (DHA) on the fatty acid and protein compositions of two populations of membrane rafts present in Caco-2 cells. DHA (100 μM) had no significant influence on the fatty acid or protein compositions of tight junction-associated, Lubrol insoluble, membrane rafts. However, DHA did significantly alter the fatty acid and protein compositions of “archetypal” Triton X-100 insoluble membrane rafts. The DHA content of the raft lipids increased 25-fold and was accompanied by a redistribution of src and fyn out of the rafts. DHA also increased Caco-2 cell monolayer permeability producing a 95% drop in transepithelial electrical resistance and a 8.56-fold increase in the flux of dextran. In conclusion, the data demonstrate that DHA does not increase permeability through modifying the TJ-associated rafts. The data do, however, show that DHA is differentially incorporated into different classes of membrane rafts, which has significant implications to our understanding of how omega-3 PUFAs modulate plasma membrane organization and cell function.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 360, Issue 4, 7 September 2007, Pages 885–890
نویسندگان
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