Abstract:
:Stromal-vascular cells from the epididymal fat pad of 4-week-old rats, when cultured in a medium containing insulin or insulin-like growth factor, IGF-I, triiodothyronine and transferrin, were able to undergo adipose conversion. Over ninety percent of the cells accumulated lipid droplets and this proportion was reduced in serum-supplemented medium. The adipose conversion was assessed by the development of lipoprotein lipase (LPL) and glycerol-3-phosphate dehydrogenase (GPDH) activities, [14C]glucose incorporation into polar and neutral lipids, triacylglycerol accumulation and lipolysis in response to isoproterenol. Similar results were obtained with stromal-vascular cells from rat subcutaneous and retroperitoneal adipose tissues. Stromal-vascular cells required no adipogenic factors in addition to the components of the serum-free medium. Insulin was required within a physiological range of concentrations for the emergence of LPL and at higher concentrations for that of GPDH. When present at concentrations ranging from 2 to 50 nM, IGF-I was able to replace insulin for the expression of both LPL and GPDH. The development of a serum-free, chemically defined medium for the differentiation of diploid adipose precursor cells opens up the possibility of characterizing inhibitors or activators of the adipose conversion process.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Deslex S,Negrel R,Ailhaud Gdoi
10.1016/0014-4827(87)90412-5subject
Has Abstractpub_date
1987-01-01 00:00:00pages
15-30issue
1eissn
0014-4827issn
1090-2422pii
0014-4827(87)90412-5journal_volume
168pub_type
杂志文章abstract::Previously, whole-mount electron microscopy of nuclei extruded together with residual cytoplasm from the rhizoids of several algal species of the order Dasycladales has revealed the occurrence of an intra- and perinuclear network of 10-nm filaments morphologically indistinguishable from that of mammalian vimentin inte...
journal_title:Experimental cell research
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abstract::The human embryonal carcinoma (EC) cell line Tera 2 clone 13 (T2/13) can be induced to differentiate in vitro into neuroectodermal cell types with retinoic acid. Undifferentiated cells are characterized by rapid proliferation, whereas differentiated cells show a prolonged generation time, have a limited life span, and...
journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1996.3464
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doi:10.1016/0014-4827(92)90451-d
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doi:10.1016/j.yexcr.2003.10.022
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journal_title:Experimental cell research
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journal_title:Experimental cell research
pub_type: 杂志文章
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journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1993.1210
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abstract::Human dental follicle cells (DFCs) and periodontal ligament cells (PDLCs) derived from the ectomesenchymal tissue, have been shown to exhibit stem/progenitor cell properties and the ability to induce tissue regeneration. Stem cells in dental follicle differentiate into cementoblasts, periodontal ligament fibroblasts a...
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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