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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
|
pubmed:dateCreated |
1978-1-27
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pubmed:abstractText |
NRK cells and many other cultured fibroblasts were found to contain the protease inhibitor, alpha 2 macroglobulin (alpha 2M). This alpha 2M is present as a result of uptake of alpha 2M from the calf serum in the culture medium. Some of this alpha 2M is released back into the medium. In radiolabeling experiments with 14C-amino acids, no radioactivity was detected in intracellular or extracellular alpha 2M. Fluorescence microscopy of fixed cells using rhodamine-labeled antibodies indicated that alpha 2M is present in vesicular organelles different from primary lysosomes. Fluorescence microscopy of living cells shows that rhodamine-labeled alpha 2M (rhodamine-alpha 2M) is taken up into similar structures. Of the many cell lines examined, Moloney sarcoma virus-transformed cells had the lowest amounts of alpha 2M. Some of the effects of serum on the behavior of cultured cells could be a consequence of inhibition of cellular proteases by alpha 2M.
|
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Nov
|
pubmed:issn |
0092-8674
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
12
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
|
pubmed:pagination |
609-17
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:72612-Animals,
pubmed-meshheading:72612-Antibodies,
pubmed-meshheading:72612-Blood,
pubmed-meshheading:72612-Cattle,
pubmed-meshheading:72612-Cell Line,
pubmed-meshheading:72612-Cell Transformation, Viral,
pubmed-meshheading:72612-Culture Media,
pubmed-meshheading:72612-Fibroblasts,
pubmed-meshheading:72612-Fluorescent Antibody Technique,
pubmed-meshheading:72612-Humans,
pubmed-meshheading:72612-Organoids,
pubmed-meshheading:72612-Rhodamines,
pubmed-meshheading:72612-Sarcoma Viruses, Murine,
pubmed-meshheading:72612-alpha-Macroglobulins
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pubmed:year |
1977
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pubmed:articleTitle |
Localization of serum-derived alpha 2 macroglobulin in cultured cells and decrease after Moloney sarcoma virus transformation.
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pubmed:publicationType |
Journal Article,
Comparative Study
|