Linked Life Data

7822838

Source:http://linkedlifedata.com/resource/pubmed/id/7822838

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1995-2-16
pubmed:abstractText
Low density lipoprotein receptors (LDL-R) on Daudi Burkitt's lymphoma (BL) cells were assessed using fluorescent DiI (3,3'-dioctadecylindocarbocyanine iodide)-LDL and flow cytometric analyses. Receptor-specific binding of DiI-LDL is followed by internalization of the bound complex and lysosomal hydrolysis of the ligand. Increase in the fluorescence intensity per cell is hence used as a measure of DiI-LDL uptake and, implicitly, as an indication of LDL-R presence. Our results show that uptake was observed in > 98% of the Daudi cells, and the level of uptake was significant and clearly distinguishable from autofluorescence, suggesting that: (a) this assay is comparable to the iodinated LDL uptake assay, although the ED50 values for the ligands are different; (b) this assay is comparable to the flow-cytometric detection of LDL-R using a commercial antibody directed against the receptor itself, and superior to a similar assay based on an antibody directed against membrane-bound LDL; (c) LDL uptake could be monitored along with transferrin uptake, suggesting that multiple endocytic receptor activities can be concurrently studied; (d) DiI-LDL uptake can be examined along with fluorescein-conjugated anti-CD10, -CD19, and -CD71, with little cross-interference, offering the added advantage that endocytic uptake and phenotyping can be simultaneously monitored; (e) the expression of LDL-R is intrinsically elevated in diverse cell lines such as Daudi, Raji, Ramos, Jurkat, and WIL2-NS, but not in normal lymphocytes. Our results therefore indicate that flow cytometric analysis of DiI-LDL uptake has potentially useful applications in the detection and study of endocytic receptor LDL-R in B and T lymphocytic cell lines.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-1759
pubmed:author
pubmed:issnType
Print
pubmed:day
28
pubmed:volume
177
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
55-67
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Flow cytometric evaluation of LDL receptors using DiI-LDL uptake and its application to B and T lymphocytic cell lines.
pubmed:affiliation
Regional Research Laboratory, Kaiser Foundation Hospitals, Los Angeles CA 90027.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.