Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2002-3-15
pubmed:abstractText
Mutations in ABCA1 cause the allelic disorders familial hypolipoproteinemia and Tangier Disease. To identify where ABCA1 was likely to have a functional role, we determined the cellular and tissue-specific patterns of murine ABCA1 expression. RT-PCR and Western blot analysis on dissected murine tissues demonstrated broad expression of ABCA1 mRNA and protein in many tissues with prominent protein expression in liver, testis, and adrenal tissue. In situ hybridization and immunohistochemistry experiments demonstrated specific patterns of ABCA1 expression at the cellular level, with hepatocytes, the epithelial lining of the digestive system and bladder, the proximal convoluted tubule of the kidney, and Purkinje and cortical pyramidal neurons containing abundant ABCA1 protein. Significant discordance between relative mRNA and protein expression patterns suggests the possibility of post-transcriptional regulation of ABCA1 expression in selected cells or tissues. We also show that ABCA1 protein levels are up-regulated specifically in the liver after exposure to an atherogenic diet for 7 days, supporting a major role for the liver in dietary modulation of HDL-C levels. Our observations show that ABCA1 is expressed in a pattern consistent with its role in HDL-C metabolism. Additionally, ABCA1 may have important functional roles in other cell types independent of HDL-C regulation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0023-6837
pubmed:author
pubmed:issnType
Print
pubmed:volume
82
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
273-83
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:11896206-ATP-Binding Cassette Transporters, pubmed-meshheading:11896206-Adrenal Glands, pubmed-meshheading:11896206-Animals, pubmed-meshheading:11896206-Blotting, Western, pubmed-meshheading:11896206-Cells, Cultured, pubmed-meshheading:11896206-Cholesterol, Dietary, pubmed-meshheading:11896206-Humans, pubmed-meshheading:11896206-In Situ Hybridization, pubmed-meshheading:11896206-Liver, pubmed-meshheading:11896206-Male, pubmed-meshheading:11896206-Mice, pubmed-meshheading:11896206-Mice, Inbred C57BL, pubmed-meshheading:11896206-Mice, Inbred CBA, pubmed-meshheading:11896206-RNA, Messenger, pubmed-meshheading:11896206-RNA Processing, Post-Transcriptional, pubmed-meshheading:11896206-Reverse Transcriptase Polymerase Chain Reaction, pubmed-meshheading:11896206-Testis, pubmed-meshheading:11896206-Up-Regulation
pubmed:year
2002
pubmed:articleTitle
ABCA1 mRNA and protein distribution patterns predict multiple different roles and levels of regulation.
pubmed:affiliation
Centre for Molecular Medicine and Therapeutics, St. Paul's Hospital/Providence Health Care-University of British Columbia, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't