The GPIHBP1-LPL complex is responsible for the margination of triglyceride-rich lipoproteins in capillaries.
The GPIHBP1-LPL complex is responsible for the margination of triglyceride-rich lipoproteins in capillaries.
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DOI:
10.1016/j.cmet.2014.01.017
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发表时间:
2014-05-06
期刊:
影响因子:
29
通讯作者:
Fong LG
中科院分区:
文献类型:
--
作者:
Goulbourne CN;Gin P;Tatar A;Nobumori C;Hoenger A;Jiang H;Grovenor CR;Adeyo O;Esko JD;Goldberg IJ;Reue K;Tontonoz P;Bensadoun A;Beigneux AP;Young SG;Fong LG
Triglyceride-rich lipoproteins (TRLs) undergo lipolysis by lipoprotein lipase (LPL), an enzyme that is transported to the capillary lumen by an endothelial cell protein, GPIHBP1. For LPL-mediated lipolysis to occur, TRLs must bind to the lumen of capillaries. This process is often assumed to involve heparan sulfate proteoglycans (HSPGs), but we suspected that TRL margination might instead require GPIHBP1. Indeed, TRLs marginate along the heart capillaries of wild-type but not Gpihbp1−/− mice, as judged by fluorescence microscopy, quantitative assays with infrared-dye–labeled lipoproteins, and EM tomography. Both cell culture and in vivo studies showed that TRL margination depends on LPL bound to GPIHBP1. Of note, the expression of LPL by endothelial cells in Gpihbp1−/− mice did not restore defective TRL margination, implying that the binding of LPL to HSPGs is ineffective in promoting TRL margination. Our studies show that GPIHBP1-bound LPL is the main determinant of TRL margination.
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影响因子:
29
作者:
Lichtenstein L;Mattijssen F;de Wit NJ;Georgiadi A;Hooiveld GJ;van der Meer R;He Y;Qi L;Köster A;Tamsma JT;Tan NS;Müller M;Kersten S
通讯作者:
Kersten S
影响因子:
56.9
作者:
BROWN, MS;GOLDSTEIN, JL
通讯作者:
GOLDSTEIN, JL
DOI:
10.1073/pnas.95.23.13841
发表时间:
1998-11-10
影响因子:
11.1
作者:
Merkel, M;Kako, Y;Breslow, JL
通讯作者:
Breslow, JL
DOI:
10.1083/jcb.3.3.457
发表时间:
1957-05-25
期刊:
The Journal of biophysical and biochemical cytology
影响因子:
--
作者:
MOORE DH;RUSKA H
通讯作者:
RUSKA H
DOI:
10.1111/j.1549-8719.2012.00168.x
发表时间:
2012-05
期刊:
Microcirculation (New York, N.Y. : 1994)
影响因子:
--
作者:
Arkill KP;Neal CR;Mantell JM;Michel CC;Qvortrup K;Rostgaard J;Bates DO;Knupp C;Squire JM
通讯作者:
Squire JM