Abstract:
:Colony stimulating factor-1 (CSF-1) and the CSF-1 receptor (the c-fms proto-oncogene product) are expressed during the proliferation of the L6 alpha 1 rat myogenic cell line and both are down-regulated during the differentiation to myotubes. Biologically active CSF-1 was shown to be secreted into the culture medium by L6 alpha 1 myoblasts and while they could not bind CSF-1, evidence was obtained for cell surface receptor-CSF-1 complexes. It was not possible to block the L6 alpha 1 proliferation by incubation with anti-CSF-1 antiserum or suramin. However, in L6 alpha 1 myoblasts that were stably transfected with an inducible anti-fms antisense construct, both c-fms protein expression and cell proliferation were more rapidly inhibited under induction and differentiation conditions than parental cells. Furthermore, under these conditions, the c-fms antisense transfected cells also entered myogenic differentiation more rapidly. These results suggest that autocrine regulation by CSF-1 that is intracellular may play a role in the proliferation of muscle cells and that its down-regulation leads to, and may be an obligatory step in, myogenesis.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Borycki AG,Smadja F,Stanley R,Leibovitch SAdoi
10.1006/excr.1995.1149subject
Has Abstractpub_date
1995-05-01 00:00:00pages
213-22issue
1eissn
0014-4827issn
1090-2422pii
S0014-4827(85)71149-4journal_volume
218pub_type
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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
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doi:10.1016/0014-4827(87)90178-9
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更新日期:2007-04-15 00:00:00
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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:10.1016/j.yexcr.2006.10.004
更新日期:2007-01-01 00:00:00
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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
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journal_title:Experimental cell research
pub_type: 杂志文章
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journal_title:Experimental cell research
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abstract::In many systems, events participating in cell division are controlled by intracellular pH (pHi). In Xenopus eggs, fertilization is accompanied by an increase in pHi which occurs concomitantly with an increase in protein synthesis and a reinitiation of DNA synthesis, leading the embryo to cell division. In this paper, ...
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journal_title:Experimental cell research
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