Abstract
The membrane transporter ATP-binding cassette transporter A1 (ABCA1) has been shown to be the rate-limiting step in the initial formation of plasma high-density lipoprotein (HDL) particles. The mechanisms of action of ABCA1, including its role in the vesicular transport of lipids to the cell surface for the lipidation of HDL apolipoproteins, are not fully understood. Niemann–Pick type C (NPC) disease is most often caused by mutations in the NPC1 gene, whose protein product is believed to facilitate the egress of cholesterol and other lipids from late endosomes and lysosomes to other cellular compartments. This report reviews current knowledge regarding the role of ABCA1 in vesicular lipid transport mechanisms required for HDL particle formation, and the relationship between ABCA1 and NPC1 in this process.
Similar content being viewed by others
Abbreviations
- HDL:
-
high-density lipoprotein
- ABCA1:
-
ATP-binding cassette transporterA1
- ApoA-I:
-
apolipoprotein A-I
- NPC:
-
Niemann–Pick type C
- PL:
-
phospholipids
- C:
-
cholesterol
- ER:
-
endoplasmic reticulum
- TGN:
-
trans-Golgi network
References
Luciani MF, Denizot F, Savary S, Mattei MG, Chimini G (1994) Cloning of two novel ABC transporters mapping on human chromosome 9. Genomics 21:150–159
Dean M, Hamon Y, Chimini G (2001) The human ATP-binding cassette (ABC) transporter superfamily. J Lipid Res 42:1007–1017
Walter M, Gerdes U, Seedorf U, Assmann G (1994) The high density lipoprotein- and apolipoprotein A-I-induced mobilization of cellular cholesterol is impaired in fibroblasts from Tangier disease subjects. Biochem Biophys Res Commun 205:850–856
Francis GA, Knopp RH, Oram JF (1995) Defective removal of cellular cholesterol and phospholipids by apolipoprotein A-I in Tangier Disease. J Clin Invest 96:78–87
Brooks-Wilson A, Marcil M, Clee SM, Zhang LH, Roomp K, van Dam M, Yu L, Brewer C, Collins JA, Molhuizen HO, Loubser O, Ouelette BF, Fichter K, Ashbourne-Excoffon KJ, Sensen CW, Scherer S, Mott S, Denis M, Martindale D, Frohlich J, Morgan K, Koop B, Pimstone S, Kastelein JJ, Hayden MR et al (1999) Mutations in ABC1 in Tangier disease and familial high-density lipoprotein deficiency. Nat Genet 22:336–345
Bodzioch M, Orso E, Klucken J, Langmann T, Bottcher A, Diederich W, Drobnik W, Barlage S, Buchler C, Porsch-Ozcurumez M, Kaminski WE, Hahmann HW, Oette K, Rothe G, Aslanidis C, Lackner KJ, Schmitz G (1999) The gene encoding ATPbinding cassette transporter 1 is mutated in Tangier disease. Nat Genet 22:347–351
Rust S, Rosier M, Funke H, Real J, Amoura Z, Piette JC, Deleuze JF, Brewer HB, Duverger N, Denefle P, Assmann G (1999) Tangier disease is caused by mutations in the gene encoding ATP-binding cassette transporter 1. Nat Genet 22:352–355
Lawn RM, Wade DP, Garvin MR, Wang X, Schwartz K, Porter JG, Seilhamer JJ, Vaughan AM, Oram JF (1999) The Tangier disease gene product ABC1 controls the cellular apolipoprotein-mediated lipid removal pathway. J Clin Invest 104:R25–R31
Oram JF (2002) ATP-binding cassette transporter A1 and cholesterol trafficking. Curr Opin Lipidol 13:373–381
Walker JE, Saraste M, Runswick MJ, Gay NJ (1982) Distantly related sequences in the alpha- and beta-subunits of ATP synthase, myosin, kinases and other ATP-requiring enzymes and a common nucleotide binding fold. EMBO J 1:945–951
Langmann T, Klucken J, Reil M, Liebisch G, Luciani MF, Chimini G, Kaminski WE, Schmitz G (1999) Molecular cloning of the human ATP-binding cassette transporter 1 (hABC1): evidence for sterol-dependent regulation in macrophages. Biochem Biophys Res Commun 257:29–33
Lawn RM, Wade DP, Couse TL, Wilcox JN (2001) Localization of human ATP-binding cassette transporter 1 (ABC1) in normal and atherosclerotic tissues. Arterioscler Thromb Vasc Biol 21:378–385
Wellington CL, Walker EK, Suarez A, Kwok A, Bissada N, Singaraja R, Yang YZ, Zhang LH, James E, Wilson JE, Francone O, McManus BM, Hayden MR (2002) ABCA1 mRNA and protein distribution patterns predict multiple different roles and levels of regulation. Lab Invest 82:273–283
Costet P, Luo Y, Wang N, Tall AR (2000) Sterol-dependent transactivation of the ABC1 promoter by the liver X receptor/retinoid X receptor. J Biol Chem 275:28240–28245
Schwartz K, Lawn RM, Wade DP (2000) ABC1 gene expression and ApoA-I-mediated cholesterol efflux are regulated by LXR. Biochem Biophys Res Commun 274:794–802
Arakawa R, Yokoyama S (2002) Helical apolipoproteins stabilize ATP-binding cassette transporter A1 by protecting it from thiol protease-mediated degradation. J Biol Chem 277:22426–22429
Wang N, Chen W, Linsel-Nitschke P, Martinez LO, Agerholm-Larsen B, Silver DL, Tall AR (2003) A PEST sequence in ABCA1 regulates degradation by calpain protease and stabilization of ABCA1 by apoA-I. J Clin Invest 111:99–107
Martinez LO, Agerholm-Larsen B, Wang N, Chen W, Tall AR (2003) Phosphorylation of a pest sequence in ABCA1 promotes calpain degradation and is reversed by ApoA-I. J Biol Chem 278:37368–37374
See RH, Caday-Malcolm RA, Singaraja RR, Zhou S, Silverston A, Huber MT, Moran J, James ER, Janoo R, Savill JM, Rigot V, Zhang LH, Wang M, Chimini G, Wellington CL, Tafuri SR, Hayden MR (2002) Protein kinase A site-specific phosphorylation regulates ATP-binding cassette A1 (ABCA1)-mediated phospholipid efflux. J Biol Chem 277:41835–41842
Haidar B, Denis M, Krimbou L, Marcil M, Genest J Jr (2002) cAMP induces ABCA1 phosphorylation activity and promotes cholesterol efflux from fibroblasts. J Lipid Res 43:2087–2094
Yamauchi Y, Hayashi M, AbeDohmae S, Yokoyama S (2003) Apolipoprotein A-I activates protein kinase C alpha signaling to phosphorylate and stabilize ATP binding cassette transporter A1 for the high density lipoprotein assembly. J Biol Chem 278:47890–47897
Tang C, Vaughan AM, Oram JF (2004) Janus kinase 2 modulates the apolipoprotein interactions with ABCA1 required for removing cellular cholesterol. J Biol Chem 279:7622–7628
Roosbeek S, Peelman F, Verhee A, Labeur C, Caster H, Lensink MF, Cirulli C, Grooten J, Cochet C, Vandekerckhove J, Amoresano A, Chimini G, Tavernier J, Rosseneu M (2004) Phosphorylation by protein kinase CK2 modulates the activity of the ATP binding cassette A1 transporter. J Biol Chem 279:37779–37788
Hamon Y, Broccardo C, Chambenoit O, Luciani MF, Toti F, Chaslin S, Freyssinet JM, Devaux PF, McNeish J, Marguet D, Chimini G (2000) ABC1 promotes engulfment of apoptotic cells and transbilayer redistribution of phosphatidylserine. Nat Cell Biol 2:399–406
Wang N, Silver DL, Costet P, Tall AR (2000) Specific binding of ApoA-I, enhanced cholesterol efflux, and altered plasma membrane morphology in cells expressing ABC1. J Biol Chem 275:33053–33058
Oram JF, Lawn RM, Garvin MR, Wade DP (2000) ABCA1 is the cAMP-inducible apolipoprotein receptor that mediates cholesterol secretion from macrophages. J Biol Chem 275:34508–34511
Fitzgerald ML, Morris AL, Rhee JS, Andersson LP, Mendez AJ, Freeman MW (2002) Naturally occurring mutations in the largest extracellular loops of ABCA1 can disrupt its direct interaction with apolipoprotein A-I. J Biol Chem 277:33178–33187
Denis M, Haidar B, Marcil M, Bouvier M, Krimbou L, Genest J Jr (2004) Molecular and cellular physiology of apolipoprotein A-I lipidation by the ATP-binding cassette transporter A1 (ABCA1). J Biol Chem 279:7384–7394
Wang N, Lan D, Gerbod-Giannone M, Linsel-Nitschke P, Jehle AW, Chen W, Martinez LO, Tall AR (2003) ATP-binding cassette transporter A7 (ABCA7) binds apolipoprotein A-I and mediates cellular phospholipid but not cholesterol efflux. J Biol Chem 278:42906–42912
Abe-Dohmae S, Ikeda Y, Matsuo M, Hayashi M, Okuhira K, Ueda K, Yokoyama S (2004) Human ABCA7 supports apolipoprotein-mediated release of cellular cholesterol and phospholipid to generate high density lipoprotein. J Biol Chem 279:604–611
Remaley AT, Stonik JA, Demosky SJ, Neufeld EB, Bocharov AV, Vishnyakova TG, Eggerman TL, Patterson AP, Duverger NJ, Santamarina-Fojo S, Brewer HB Jr (2001) Apolipoprotein specificity for lipid efflux by the human ABCAI transporter. Biochem Biophys Res Commun 280:818–823
Fitzgerald ML, Mendez AJ, Moore KJ, Andersson LP, Panjeton HA, Freeman MW (2001) ATP-binding cassette transporter A1 contains an NH2-terminal signal anchor sequence that translocates the protein’s first hydrophilic domain to the exoplasmic space. J Biol Chem 276:15137–151345
Orso E, Broccardo C, Kaminski WE, Bottcher A, Liebisch G, Drobnik W, Gotz A, Chambenoit O, Diederich W, Langmann T, Spruss T, Luciani MF, Rothe G, Lackner KJ, Chimini G, Schmitz G (2000) Transport of lipids from Golgi to plasma membrane is defective in tangier disease patients and Abc1-deficient mice. Nat Genet 24:192–196
Neufeld EB, Remaley AT, Demosky SJ, Stonik JA, Cooney AM, Comly M, Dwyer NK, Zhang M, Blanchette-Mackie J, Santamarina-Fojo S, Brewer HB Jr (2001) Cellular localization and trafficking of the human ABCA1 transporter. J Biol Chem 276:27584–27590
Chen W, Wang N, Tall AR (2005) A PEST deletion mutant of ABCA1 shows impaired internalization and defective cholesterol efflux from late endosomes. J Biol Chem 280:29277–29281
Takahashi Y, Smith JD (1999) Cholesterol efflux to apolipoprotein AI involves endocytosis and resecretion in a calcium-dependent pathway. Proc Natl Acad Sci U S A 96:11358–11363
Smith JD, Waelde C, Horwitz A, Zheng P (2002) Evaluation of the role of phosphatidylserine translocase activity in ABCA1-mediated lipid efflux. J Biol Chem 277:17797–17803
Santamarina-Fojo S, Remaley AT, Neufeld EB, Brewer HB Jr (2001) Regulation and intracellular trafficking of the ABCA1 transporter. J Lipid Res 42:1339–1345
Robenek H, Schmitz G (1991) Abnormal processing of Golgi elements and lysosomes in Tangier disease. Arterioscler Thromb 11:1007–1020
Mendez AJ, Uint L (1996) Apolipoprotein-mediated cellular cholesterol and phospholipid efflux depend on a functional Golgi apparatus. J Lipid Res 37:2510–2524
Remaley AT, Schumacher UK, Stonik JA, Farsi BD, Nazih H, Brewer HB Jr (1997) Decreased reverse cholesterol transport from Tangier disease fibroblasts. Acceptor specificity and effect of brefeldin on lipid efflux. Arterioscler Thromb Vasc Biol 17:1813–1821
Neufeld EB, Stonik JA, Demosky SJ Jr, Knapper CL, Combs CA, Cooney A, Comly M, Dwyer N, Blanchette-Mackie J, Remaley AT, Santamarina-Fojo S, Brewer HB Jr (2004) The ABCA1 transporter modulates late endocytic trafficking: insights from the correction of the genetic defect in Tangier disease. J Biol Chem 279:15571–15578
Zha X, Gauthier A, Genest J, McPherson R (2003) Secretory vesicular transport from the Golgi is altered during ATP-binding cassette protein A1 (ABCA1)-mediated cholesterol efflux. J Biol Chem 278:10002–10005
Oram JF, Yokoyama S (1996) Apolipoprotein-mediated removal of cellular cholesterol and phospholipids. J Lipid Res 37:2473–2491
Bared SM, Buechler C, Boettcher A, Dayoub R, Sigruener A, Grandl M, Rudolph C, Dada A, Schmitz G (2004) Association of ABCA1 with syntaxin 13 and flotillin-1 and enhanced phagocytosis in tangier cells. Mol Biol Cell 15:5399–5407
Engel T, Lueken A, Bode G, Hobohm U, Lorkowski S, Schlueter B, Rust S, Cullen P, Pech M, Assmann G, Seedorf U (2004) ADP-ribosylation factor (ARF)-like 7 (ARL7) is induced by cholesterol loading and participates in apolipoprotein AI-dependent cholesterol export. FEBS Lett 566:241–246
Meiner VL, Cases S, Myers HM, Sande ER, Bellosta S, Schambelan M, Pitas RE, McGuire J, Herz J, Farese RV Jr (1996) Disruption of the acyl-CoA:cholesterol acyltransferase gene in mice: evidence suggesting multiple cholesterol esterification enzymes in mammals. Proc Natl Acad Sci U S A 93:14041–14046
Pentchev PG, Brady RO, Blanchette-Mackie EJ, Vanier MT, Carstea ED, Parker CC, Goldin E, Roff CF (1994) The Niemann–Pick C lesion and its relationship to the intracellular distribution and utilization of LDL cholesterol. Biochim Biophys Acta 1225:235–243
Vanier MT, Rodriguez-Lafrasse C, Rousson R, Gazzah N, Juge MC, Pentchev PG, Revol A, Louisot P (1991) Type C Niemann–Pick disease: spectrum of phenotypic variation in disruption of intracellular LDL-derived cholesterol processing. Biochim Biophys Acta 1096:328–337
Coxey RA, Pentchev PG, Campbell G, Blanchette-Mackie EJ (1993) Differential accumulation of cholesterol in Golgi compartments of normal and Niemann–Pick type C fibroblasts incubated with LDL: a cytochemical freeze-fracture study. J Lipid Res 34:1165–1176
Patterson MC, Vanier MT, Suzuki K, Morris JE, Carstea ED, Neufeld EB, Blanchette-Mackie EJ, Pentchev PG (2001) Niemann–Pick Disease Type C: a lipid trafficking disorder. In: Scriver CR, Beaudet AL, Sly WS, Valle D (eds) The metabolic & molecular bases of inherited disease. McGraw-Hill, New York, pp 3611–3633
Carstea ED, Morris JA, Coleman KG, Loftus SK, Zhang D, Cummings C, Gu J, Rosenfeld MA, Pavan WJ, Krizman DB, Nagle J, Polymeropoulos MH, Sturley SL, Ioannou YA, Higgins ME, Comly M, Cooney A, Brown A, Kaneski CR, Blanchette-Mackie EJ, Dwyer NK, Neufeld EB, Chang TY, Liscum L, Tagle DA et al (1997) Niemann–Pick C1 disease gene: homology to mediators of cholesterol homeostasis. Science 277:228–231
Loftus SK, Morris JA, Carstea ED, Gu JZ, Cummings C, Brown A, Ellison J, Ohno K, Rosenfeld MA, Tagle DA, Pentchev PG, Pavan WJ (1997) Murine model of Niemann–Pick C disease: mutation in a cholesterol homeostasis gene. Science 277:232–235
Davies JP, Chen FW, Ioannou YA (2000) Transmembrane molecular pump activity of Niemann–Pick C1 protein. Science 290:2295–2298
Altmann SW, Davis HR Jr, Zhu LJ, Yao X, Hoos LM, Tetzloff G, Iyer SP, Maguire M, Golovko A, Zeng M, Wang L, Murgolo N, Graziano MP (2004) Niemann–Pick C1 like 1 protein is critical for intestinal cholesterol absorption. Science 303:1201–1204
Tseng TT, Gratwick KS, Kollman J, Park D, Nies DH, Goffeau A, Saier MH Jr (1999) The RND permease superfamily: an ancient, ubiquitous and diverse family that includes human disease and development proteins. J Mol Microbiol Biotechnol 1:107–125
Higgins ME, Davies JP, Chen FW, Ioannou YA (1999) Niemann–Pick C1 is a late endosome-resident protein that transiently associates with lysosomes and the trans-Golgi network. Mol Genet Metab 68:1–13
Blanchette-Mackie EJ (2000) Intracellular cholesterol trafficking: role of the NPC1 protein. Biochim Biophys Acta 1486:171–183
Naureckiene S, Sleat DE, Lackland H, Fensom A, Vanier MT, Wattiaux R, Jadot M, Lobel P (2000) Identification of HE1 as the second gene of Niemann–Pick C disease. Science 290:2298–2301
Amigo L, Mendoza H, Castro J, Quinones V, Miquel JF, Zanlungo S (2002) Relevance of Niemann–Pick type C1 protein expression in controlling plasma cholesterol and biliary lipid secretion in mice. Hepatology 36:819–828
Garver WS, Heidenreich RA, Erickson RP, Thomas MA, Wilson JM (2000) Localization of the murine Niemann–Pick C1 protein to two distinct intracellular compartments. J Lipid Res 41:673–687
Neufeld EB, Wastney M, Patel S, Suresh S, Cooney AM, Dwyer NK, Roff CF, Ohno K, Morris JA, Carstea ED, Incardona JP, Strauss JF III, Vanier MT, Patterson MC, Brady RO, Pentchev PG, Blanchette-Mackie EJ (1999) The Niemann–Pick C1 protein resides in a vesicular compartment linked to retrograde transport of multiple lysosomal cargo. J Biol Chem 274:9627–9635
Patel SC, Suresh S, Kumar U, Hu CY, Cooney A, Blanchette-Mackie EJ, Neufeld EB, Patel RC, Brady RO, Patel YC, Pentchev PG, Ong WY (1999) Localization of Niemann–Pick C1 protein in astrocytes: implications for neuronal degeneration in Niemann–Pick type C disease. Proc Natl Acad Sci U S A 96:1657–1662
Holtta-Vuori M, Maatta J, Ullrich O, Kuismanen E, Ikonen E (2000) Mobilization of late-endosomal cholesterol is inhibited by Rab guanine nucleotide dissociation inhibitor. Curr Biol 10:95–98
Zhang M, Dwyer NK, Neufeld EB, Love DC, Cooney A, Comly M, Patel S, Watari H, Strauss JF III, Pentchev PG, Hanover JA, Blanchette-Mackie EJ (2001) Sterol-modulated glycolipid sorting occurs in Niemann–Pick C1 late endosomes. J Biol Chem 276:3417–3425
Zhang M, Sun M, Dwyer NK, Comly ME, Patel SC, Sundaram R, Hanover JA, Blanchette-Mackie EJ (2003) Differential trafficking of the Niemann–Pick C1 and 2 proteins highlights distinct roles in late endocytic lipid trafficking. Acta Paediatr Suppl 92:63–73; discussion 45
Ohgami N, Ko DC, Thomas M, Scott MP, Chang CC, Chang TY (2004) Binding between the Niemann–Pick C1 protein and a photoactivatable cholesterol analog requires a functional sterol-sensing domain. Proc Natl Acad Sci U S A 101:12473–12478
Strauss JF III, Liu P, Christenson LK, Watari H (2002) Sterols and intracellular vesicular trafficking: lessons from the study of NPC1. Steroids 67:947–951
Kirchhoff C, Osterhoff C, Young L (1996) Molecular cloning and characterization of HE1, a major secretory protein of the human epididymis. Biol Reprod 54:847–856
Chikh K, Vey S, Simonot C, Vanier MT, Millat G (2004) Niemann–Pick type C disease: importance of N-glycosylation sites for function and cellular location of the NPC2 protein. Mol Genet Metab 83:220–230
Carstea ED, Morris JA, Coleman KG, Loftus SK, Zhang D, Cummings C, Gu J, Rosenfeld MA, Pavan WJ, Krizman DB, Nagle J, Polymeropoulos MH, Sturley SL, Ioannou YA, Higgins ME, Comly M, Cooney A, Brown A, Kaneski CR, BlanchetteMackie EJ, Dwyer NK, Neufeld EB, Chang TY, Liscum L, Strauss JF III, Ohno K, Zeigler M, Carmi R, Sokol J, Markie D, O’Neill RR, van Diggelen OP, Elleder M, Patterson MC, Brady RO, Vanier MT, Pentchev PG, Tagle DA (1997) Niemann–Pick C1 disease gene: homology to mediators of cholesterol homeostasis. Science 277:228–231
Pentchev PG, Comly ME, Kruth HS, Vanier MT, Wenger DA, Patel S, Brady RO (1985) A defect in cholesterol esterification in Niemann–Pick disease (type C) patients. Proc Natl Acad Sci U S A 82:8247–8251
Pentchev PG, Comly ME, Kruth HS, Tokoro T, Butler J, Sokol J, Filling-Katz M, Quirk JM, Marshall DC, Patel S, Vanier MT, Brady RO (1987) Group C Niemann–Pick disease: faulty regulation of low-density lipoprotein uptake and cholesterol storage in cultured fibroblasts. FASEB J 1:40–45
Sleat DE, Wiseman JA, El-Banna M, Price SM, Verot L, Shen MM, Tint GS, Vanier MT, Walkley SU, Lobel P (2004) Genetic evidence for nonredundant functional cooperativity between NPC1 and NPC2 in lipid transport. Proc Natl Acad Sci U S A 101:5886–5891
Ioannou YA (2000) The structure and function of the Niemann–Pick C1 protein. Mol Genet Metab 71:175–181
Liscum L, Faust JR (1987) Low density lipoprotein (LDL)-mediated suppression of cholesterol synthesis and LDL uptake is defective in Niemann–Pick type C fibroblasts. J Biol Chem 262:17002–17008
Choi HY, Karten B, Chan T, Vance JE, Greer WL, Heidenreich RA, Garver WS, Francis GA (2003) Impaired ABCA1-dependent lipid efflux and hypoalphalipoproteinemia in human Niemann–Pick type C disease. J Biol Chem 278:32569–32577
Clee SM, Kastelein JJ, van Dam M, Marcil M, Roomp K, Zwarts KY, Collins JA, Roelants R, Tamasawa N, Stulc T, Suda T, Ceska R, Boucher B, Rondeau C, DeSouich C, Brooks-Wilson A, Molhuizen HO, Frohlich J, Genest J Jr, Hayden MR (2000) Age and residual cholesterol efflux affect HDL cholesterol levels and coronary artery disease in ABCA1 heterozygotes. J Clin Invest 106:1263–1270
Xie C, Turley SD, Dietschy JM (1999) Cholesterol accumulation in tissues of the Niemann–Pick type C mouse is determined by the rate of lipoprotein-cholesterol uptake through the coated-pit pathway in each organ. Proc Natl Acad Sci U S A 96:11992–11997
Chen W, Sun Y, Welch C, Gorelik A, Leventhal AR, Tabas I, Tall AR (2001) Preferential ATP-binding cassette transporter A1-mediated cholesterol efflux from late endosomes/lysosomes. J Biol Chem 276:43564–43569
Feng B, Tabas I (2002) ABCA1-mediated cholesterol efflux is defective in free cholesterolloaded macrophages. Mechanism involves enhanced ABCA1 degradation in a process requiring full NPC1 activity. J Biol Chem 277:43271–43280
Feng B, Yao PM, Li Y, Devlin CM, Zhang D, Harding HP, Sweeney M, Rong JX, Kuriakose G, Fisher EA, Marks AR, Ron D, Tabas I (2003) The endoplasmic reticulum is the site of cholesterol-induced cytotoxicity in macrophages. Nat Cell Biol 5:781–792
Feng B, Zhang D, Kuriakose G, Devlin CM, Kockx M, Tabas I (2003) Niemann–Pick C heterozygosity confers resistance to lesional necrosis and macrophage apoptosis in murine atherosclerosis. Proc Natl Acad Sci U S A 100:10423–10428
Lange Y, Ye J, Rigney M, Steck T (2000) Cholesterol movement in Niemann–Pick type C cells and in cells treated with amphiphiles. J Biol Chem 275:17468–17475
Frolov A, Zielinski SE, Crowley JR, DudleyRucker N, Schaffer JE, Ory DS (2003) NPC1 and NPC2 regulate cellular cholesterol homeostasis through generation of low density lipoprotein cholesterol-derived oxysterols. J Biol Chem 278:25517–255125
Prinz W (2002) Cholesterol trafficking in the secretory and endocytic systems. Semin Cell Dev Biol 13:197–203
Soccio RE, Breslow JL (2004) Intracellular cholesterol transport. Arterioscler Thromb Vasc Biol 24:1150–1160
Acknowledgements
This work was supported by CIHR operating grant MOP-12660. The authors thank Drs. William Garver and John Oram for helpful discussions. This work was supported by a CIHR/HSFC/Pfizer Canada Training Fellowship in Stroke, Cardiovascular, Obesity, Lipid, and Atherosclerosis Research (SCOLAR) to E. Boadu. G.A. Francis is a Senior Scholar of the Alberta Heritage Foundation for Medical Research.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Boadu, E., Francis, G.A. The role of vesicular transport in ABCA1-dependent lipid efflux and its connection with NPC pathways. J Mol Med 84, 266–275 (2006). https://doi.org/10.1007/s00109-005-0001-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00109-005-0001-9